/* ============================================================
   PeptideLab – Main Stylesheet
   ============================================================ */

/* ── Google Fonts imported via HTML ────────────────────────── */

/* ============================================================
   1. CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Colors */
  --color-bg:          #050810;
  --color-bg-2:        #080d1a;
  --color-bg-3:        #0c1225;
  --color-surface:     #0e1530;
  --color-surface-2:   #111a38;
  --color-border:      rgba(255,255,255,0.08);
  --color-border-2:    rgba(0,212,255,0.15);

  --color-cyan:        #00d4ff;
  --color-cyan-dim:    rgba(0,212,255,0.15);
  --color-cyan-glow:   rgba(0,212,255,0.4);
  --color-purple:      #8b5cf6;
  --color-purple-dim:  rgba(139,92,246,0.15);
  --color-purple-glow: rgba(139,92,246,0.4);

  --color-text:        #e2e8f0;
  --color-text-muted:  #7a8599;
  --color-text-dim:    #4a556e;
  --color-white:       #ffffff;

  --color-success:     #10b981;
  --color-error:       #ef4444;
  --color-warning:     #f59e0b;
  --color-info:        #3b82f6;

  /* Gradients */
  --gradient-primary:  linear-gradient(135deg, var(--color-cyan) 0%, var(--color-purple) 100%);
  --gradient-bg:       radial-gradient(ellipse 80% 60% at 50% -20%, rgba(0,212,255,0.12) 0%, transparent 60%),
                       radial-gradient(ellipse 60% 40% at 80% 80%, rgba(139,92,246,0.08) 0%, transparent 50%),
                       var(--color-bg);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radii */
  --radius-sm:  0.375rem;
  --radius-md:  0.75rem;
  --radius-lg:  1rem;
  --radius-xl:  1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.7);
  --shadow-cyan: 0 0 32px rgba(0,212,255,0.25);
  --shadow-purple: 0 0 32px rgba(139,92,246,0.25);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Nav */
  --nav-height: 72px;

  /* Z-index */
  --z-nav:      100;
  --z-drawer:   200;
  --z-overlay:  190;
  --z-modal:    300;
  --z-toast:    400;
}

/* ============================================================
   1b. LIGHT THEME OVERRIDES
   Applied when <html data-theme="light">
   ============================================================ */
[data-theme="light"] {
  --color-bg:          #f8f9fc;
  --color-bg-2:        #f0f2f7;
  --color-bg-3:        #e8ecf4;
  --color-surface:     #ffffff;
  --color-surface-2:   #f4f6fb;
  --color-border:      rgba(0,0,0,0.08);
  --color-border-2:    rgba(0,150,180,0.25);
  --color-text:        #1a1f2e;
  --color-text-muted:  #64748b;
  --color-text-dim:    #94a3b8;
  --gradient-bg:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(0,180,220,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(100,60,200,0.04) 0%, transparent 50%),
    var(--color-bg);
  --shadow-sm:    0 1px 3px  rgba(0,0,0,0.08);
  --shadow-md:    0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:    0 8px 32px rgba(0,0,0,0.12);
  --shadow-xl:    0 16px 48px rgba(0,0,0,0.15);
  --shadow-cyan:   0 0 32px rgba(0,180,220,0.12);
  --shadow-purple: 0 0 32px rgba(100,60,200,0.12);
}

/* Hardcoded rgba overrides for light mode */
[data-theme="light"] ::selection {
  background: rgba(0,150,200,0.2);
  color: var(--color-text);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(248,249,252,0.92);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06), var(--shadow-md);
}

[data-theme="light"] .mobile-menu {
  background: rgba(248,249,252,0.98);
  border-bottom: 1px solid var(--color-border);
}

[data-theme="light"] .hero-bg::before {
  background: radial-gradient(ellipse, rgba(0,150,200,0.06) 0%, transparent 70%);
}
[data-theme="light"] .hero-bg::after {
  background: radial-gradient(ellipse, rgba(100,60,200,0.04) 0%, transparent 70%);
}

[data-theme="light"] .grid-overlay {
  background-image:
    linear-gradient(rgba(0,0,0,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.025) 1px, transparent 1px);
}

[data-theme="light"] .orb-1 {
  background: radial-gradient(circle, rgba(0,150,200,0.05) 0%, transparent 70%);
}
[data-theme="light"] .orb-2 {
  background: radial-gradient(circle, rgba(100,60,200,0.04) 0%, transparent 70%);
}
[data-theme="light"] .orb-3 {
  background: radial-gradient(circle, rgba(0,150,200,0.03) 0%, transparent 70%);
}

[data-theme="light"] .hero-card-back-1 {
  background: rgba(210,218,240,0.7);
}
[data-theme="light"] .hero-card-back-2 {
  background: rgba(210,218,240,0.4);
}

[data-theme="light"] .btn-ghost:hover,
[data-theme="light"] .hamburger:hover {
  background: rgba(0,0,0,0.05);
}

[data-theme="light"] .filter-tab:hover:not(.active),
[data-theme="light"] .qty-btn:hover,
[data-theme="light"] .qty-selector-btn:hover {
  background: rgba(0,0,0,0.05);
}

[data-theme="light"] .cform-input,
[data-theme="light"] .cform-select {
  background: rgba(0,0,0,0.03);
}

[data-theme="light"] .product-main-visual::after {
  background: radial-gradient(ellipse at center, transparent 40%, rgba(248,249,252,0.3) 100%);
}

/* ============================================================
   2. CSS RESET + BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: var(--gradient-bg);
  background-attachment: fixed;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; }
h1,h2,h3,h4,h5,h6 { line-height: 1.2; font-weight: 700; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg-2); }
::-webkit-scrollbar-thumb { background: var(--color-surface-2); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-purple); }

/* Text selection */
::selection { background: rgba(0,212,255,0.25); color: var(--color-white); }

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

/* ============================================================
   3. TYPOGRAPHY HELPERS
   ============================================================ */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-cyan);
  background: var(--color-cyan-dim);
  border: 1px solid var(--color-border-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}
.section-header .section-subtitle { margin: 0 auto; }

/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-sm {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.grid { display: grid; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
  cursor: pointer;
  border: none;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              background var(--transition-base);
  white-space: nowrap;
}

/* Shine sweep effect */
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}
.btn:hover::before { transform: translateX(100%); }
.btn:active { transform: scale(0.97); }

/* Primary */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0,212,255,0.4), var(--shadow-lg);
}

/* Secondary */
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-border-2);
  transform: translateY(-2px);
}

/* Outline */
.btn-outline {
  background: transparent;
  color: var(--color-cyan);
  border: 1px solid var(--color-cyan);
}
.btn-outline:hover {
  background: var(--color-cyan-dim);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cyan);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.05);
  color: var(--color-text);
  border-color: var(--color-border);
}

/* Sizes */
.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}
.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

/* ============================================================
   6. NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: var(--z-nav);
  transition: background var(--transition-slow), box-shadow var(--transition-slow), backdrop-filter var(--transition-slow);
}

.nav.scrolled {
  background: rgba(5,8,16,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06), var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--space-6);
  max-width: 1280px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-white);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 0 16px rgba(0,212,255,0.3);
}
.nav-logo span.logo-name { color: var(--color-white); }
.nav-logo span.logo-accent { color: var(--color-cyan); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-link {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-base), background var(--transition-base);
  text-decoration: none;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}
.nav-link:hover, .nav-link.active { color: var(--color-white); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.cart-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
  position: relative;
}
.cart-btn:hover {
  background: var(--color-surface-2);
  border-color: var(--color-border-2);
  transform: translateY(-1px);
}
.cart-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 var(--space-1);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-base);
}
.hamburger:hover { background: rgba(255,255,255,0.05); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
  transform-origin: center;
}

/* Hamburger open state */
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(8,13,26,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6) var(--space-6);
  z-index: calc(var(--z-nav) - 1);
  transform: translateY(-10px);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
  pointer-events: none;
}
.mobile-menu.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
.mobile-menu .nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-1);
  font-size: 1.0625rem;
}

/* ============================================================
   7. DISCLAIMER BANNER
   ============================================================ */
.disclaimer-banner {
  background: rgba(245,158,11,0.1);
  border-bottom: 1px solid rgba(245,158,11,0.2);
  padding: var(--space-2) var(--space-6);
  text-align: center;
  font-size: 0.8125rem;
  color: #f59e0b;
  font-weight: 500;
  letter-spacing: 0.01em;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  z-index: calc(var(--z-nav) - 1);
}
.disclaimer-banner i { margin-right: var(--space-2); }

/* Push content below nav + banner */
.page-offset {
  padding-top: calc(var(--nav-height) + 40px);
}

/* ============================================================
   8. HERO SECTION
   ============================================================ */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-12);
  padding: calc(var(--nav-height) + 80px) var(--space-6) var(--space-20);
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
}

/* Animated radial gradient background */
.hero-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}
.hero-bg::before {
  content: '';
  position: absolute;
  width: 900px;
  height: 900px;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(0,212,255,0.08) 0%, transparent 70%);
  animation: heroGradient 8s ease-in-out infinite alternate;
}
.hero-bg::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  bottom: 10%;
  right: 5%;
  background: radial-gradient(ellipse, rgba(139,92,246,0.07) 0%, transparent 70%);
  animation: heroGradient 10s ease-in-out infinite alternate-reverse;
}

/* CSS Grid lines overlay */
.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black 40%, transparent 100%);
}

/* Floating orbs */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  z-index: -1;
  animation: orbFloat linear infinite;
}
.orb-1 {
  width: 400px; height: 400px;
  top: 10%; left: -10%;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
  animation-duration: 20s;
}
.orb-2 {
  width: 350px; height: 350px;
  top: 50%; right: -5%;
  background: radial-gradient(circle, rgba(139,92,246,0.07) 0%, transparent 70%);
  animation-duration: 25s;
  animation-delay: -8s;
}
.orb-3 {
  width: 250px; height: 250px;
  bottom: 20%; left: 30%;
  background: radial-gradient(circle, rgba(0,212,255,0.04) 0%, transparent 70%);
  animation-duration: 18s;
  animation-delay: -5s;
}

/* Hero content */
.hero-content { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-cyan-dim);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-cyan);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
  animation: fadeInDown 0.6s ease both;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-cyan);
  animation: float 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.7s ease 0.1s both;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: var(--space-8);
  animation: fadeInUp 0.7s ease 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
  animation: fadeInUp 0.7s ease 0.3s both;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  animation: fadeInUp 0.7s ease 0.4s both;
}
.hero-stat {
  display: flex;
  flex-direction: column;
}
.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}
.hero-stats-divider {
  width: 1px;
  height: 36px;
  background: var(--color-border);
}

/* Hero visual / card stack */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.8s ease 0.3s both;
}

.hero-card-stack {
  position: relative;
  width: 380px;
}

.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}
.hero-card:hover {
  transform: translateY(-8px) rotate(-1deg);
  box-shadow: 0 24px 60px rgba(0,0,0,0.6), 0 0 40px rgba(0,212,255,0.15);
}

.hero-card-bg {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
}
.hero-card-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, var(--color-surface));
}

.hero-card-body { padding: var(--space-5); }
.hero-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
  margin-bottom: var(--space-2);
}
.hero-card-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.hero-card-price {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Floating badges on hero card */
.hero-float-badge {
  position: absolute;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-3);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
  z-index: 2;
}
.hero-float-badge.badge-top {
  top: -16px;
  right: -24px;
  color: var(--color-cyan);
  border-color: var(--color-border-2);
  animation-delay: 0s;
}
.hero-float-badge.badge-bottom {
  bottom: 40px;
  left: -28px;
  color: var(--color-success);
  border-color: rgba(16,185,129,0.3);
  animation-delay: 1s;
}

/* Background cards in stack */
.hero-card-back {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  transform-origin: bottom center;
}
.hero-card-back-1 {
  background: rgba(14,21,48,0.6);
  transform: translateY(12px) scale(0.95) rotate(2deg);
  z-index: -1;
}
.hero-card-back-2 {
  background: rgba(14,21,48,0.3);
  transform: translateY(24px) scale(0.9) rotate(-1.5deg);
  z-index: -2;
}

/* ============================================================
   9. SECTIONS COMMON
   ============================================================ */
.section {
  padding: var(--space-20) 0;
}
.section-alt {
  background: var(--color-bg-2);
}

/* ============================================================
   10. PRODUCT CARDS
   ============================================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-slow);
  position: relative;
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.6), 0 0 0 1px var(--color-border-2), 0 0 30px rgba(0,212,255,0.1);
  border-color: rgba(0,212,255,0.3);
}

.product-card-visual {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4.5rem;
  position: relative;
  overflow: hidden;
}
.product-card-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, var(--color-surface));
}

.product-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 1;
}
.badge-bestseller { background: rgba(245,158,11,0.15); color: #f59e0b; border: 1px solid rgba(245,158,11,0.3); }
.badge-new        { background: rgba(16,185,129,0.15); color: #10b981; border: 1px solid rgba(16,185,129,0.3); }
.badge-sale       { background: rgba(239,68,68,0.15);  color: #ef4444; border: 1px solid rgba(239,68,68,0.3); }
.badge-research   { background: rgba(139,92,246,0.15); color: #8b5cf6; border: 1px solid rgba(139,92,246,0.3); }

.product-card-body { padding: var(--space-5); }
.product-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
  margin-bottom: var(--space-2);
}
.product-name {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
  line-height: 1.3;
}
.product-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.stars { color: #f59e0b; font-size: 0.875rem; letter-spacing: 1px; }
.rating-value { font-size: 0.875rem; font-weight: 700; }
.rating-count  { font-size: 0.8125rem; color: var(--color-text-muted); }

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.product-price-group { display: flex; align-items: baseline; gap: var(--space-2); }
.product-price {
  font-size: 1.375rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.product-price-original {
  font-size: 0.9375rem;
  color: var(--color-text-dim);
  text-decoration: line-through;
}

.add-to-cart-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 1.125rem;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);
  position: relative;
  overflow: hidden;
}
.add-to-cart-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.2) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.5s;
}
.add-to-cart-btn:hover::before { transform: translateX(100%); }
.add-to-cart-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(0,212,255,0.4);
}
.add-to-cart-btn:active { transform: scale(0.97); }

/* ============================================================
   11. SHOP PAGE – FILTERS & CONTROLS
   ============================================================ */
.shop-controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.625rem var(--space-4);
  flex: 1;
  min-width: 200px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.search-bar:focus-within {
  border-color: var(--color-border-2);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.08);
}
.search-bar i { color: var(--color-text-muted); font-size: 0.9rem; }
.search-bar input {
  background: none;
  border: none;
  outline: none;
  color: var(--color-text);
  font-size: 0.9375rem;
  width: 100%;
}
.search-bar input::placeholder { color: var(--color-text-dim); }

.filter-tabs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-1);
  flex-wrap: wrap;
}
.filter-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: calc(var(--radius-md) - 2px);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base);
  border: none;
  background: none;
  white-space: nowrap;
}
.filter-tab.active {
  background: var(--gradient-primary);
  color: var(--color-white);
  font-weight: 600;
}
.filter-tab:hover:not(.active) {
  background: rgba(255,255,255,0.05);
  color: var(--color-text);
}

.sort-select {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.625rem var(--space-4);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition-base);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a8599' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
.sort-select:focus { border-color: var(--color-border-2); }
.sort-select option { background: var(--color-surface); }

.results-count {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.results-count strong { color: var(--color-text); }

/* ============================================================
   12. CART DRAWER
   ============================================================ */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.cart-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 420px;
  max-width: 100vw;
  background: var(--color-bg-2);
  border-left: 1px solid var(--color-border);
  z-index: var(--z-drawer);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.cart-drawer.open { transform: translateX(0); }

.cart-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.cart-drawer-title {
  font-size: 1.125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.cart-close-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base);
}
.cart-close-btn:hover { background: var(--color-surface-2); color: var(--color-text); }

.cart-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-6);
}

.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: var(--space-12);
}
.cart-empty-icon {
  font-size: 3.5rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}
.cart-empty-title { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--space-2); }
.cart-empty-text  { color: var(--color-text-muted); font-size: 0.9375rem; margin-bottom: var(--space-6); }

.cart-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}
.cart-item-visual {
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem;
  flex-shrink: 0;
}
.cart-item-info { flex: 1; min-width: 0; }
.cart-item-name {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cart-item-format {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.cart-item-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.qty-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.qty-btn {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: background var(--transition-base), color var(--transition-base);
}
.qty-btn:hover { background: rgba(255,255,255,0.05); color: var(--color-text); }
.qty-value {
  font-size: 0.9rem;
  font-weight: 600;
  min-width: 20px;
  text-align: center;
}
.remove-item-btn {
  background: none;
  border: none;
  color: var(--color-text-dim);
  cursor: pointer;
  font-size: 0.875rem;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background var(--transition-base);
}
.remove-item-btn:hover { color: var(--color-error); background: rgba(239,68,68,0.1); }
.cart-item-price {
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
}

.cart-drawer-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-5) var(--space-6);
  flex-shrink: 0;
  background: var(--color-bg-2);
}
.cart-subtotal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}
.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
  font-size: 1.125rem;
  font-weight: 700;
}
.cart-total-value {
  font-size: 1.25rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cart-checkout-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 0.875rem;
  background: var(--gradient-primary);
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
}
.cart-checkout-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.5s;
}
.cart-checkout-btn:hover::before { transform: translateX(100%); }
.cart-checkout-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 20px rgba(0,212,255,0.3);
}
.cart-continue-btn {
  display: block;
  text-align: center;
  margin-top: var(--space-3);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-base);
  text-decoration: none;
  background: none;
  border: none;
  width: 100%;
}
.cart-continue-btn:hover { color: var(--color-cyan); }

/* ============================================================
   13. TOAST NOTIFICATIONS
   ============================================================ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  min-width: 280px;
  max-width: 380px;
  box-shadow: var(--shadow-xl);
  pointer-events: all;
  animation: toastIn 0.35s var(--transition-spring) both;
}
.toast.hiding { animation: toastOut 0.3s ease forwards; }

.toast-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.toast-success .toast-icon { background: rgba(16,185,129,0.15); color: var(--color-success); }
.toast-error   .toast-icon { background: rgba(239,68,68,0.15);  color: var(--color-error); }
.toast-info    .toast-icon { background: rgba(0,212,255,0.12);   color: var(--color-cyan); }

.toast-content { flex: 1; }
.toast-title  { font-size: 0.9375rem; font-weight: 700; margin-bottom: 2px; }
.toast-msg    { font-size: 0.8125rem; color: var(--color-text-muted); }

.toast-close {
  background: none;
  border: none;
  color: var(--color-text-dim);
  cursor: pointer;
  font-size: 0.875rem;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base);
  flex-shrink: 0;
}
.toast-close:hover { color: var(--color-text); }

/* ============================================================
   14. STATS / COUNTER SECTION
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-slow), border-color var(--transition-slow);
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-primary);
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-2);
}

.stat-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.375rem;
  margin: 0 auto var(--space-4);
}
.stat-icon-cyan { background: var(--color-cyan-dim); color: var(--color-cyan); }
.stat-icon-purple { background: var(--color-purple-dim); color: var(--color-purple); }

.stat-value {
  font-size: 2.25rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-label { font-size: 0.9375rem; color: var(--color-text-muted); }

/* ============================================================
   15. FEATURES GRID
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: transform var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-slow);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-2);
  box-shadow: 0 0 30px rgba(0,212,255,0.06);
}
.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.375rem;
  margin-bottom: var(--space-5);
  background: var(--color-cyan-dim);
  color: var(--color-cyan);
}
.feature-title { font-size: 1.0625rem; font-weight: 700; margin-bottom: var(--space-2); }
.feature-desc  { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.6; }

/* ============================================================
   16. CATEGORY CARDS
   ============================================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
}

.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  cursor: pointer;
  text-decoration: none;
  display: block;
  transition: transform var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-slow);
}
.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-2);
  box-shadow: 0 0 30px rgba(0,212,255,0.1);
}
.category-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-3);
  display: block;
}
.category-name { font-size: 0.9375rem; font-weight: 700; margin-bottom: var(--space-1); }
.category-count { font-size: 0.8125rem; color: var(--color-text-muted); }

/* ============================================================
   17. TESTIMONIALS
   ============================================================ */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: transform var(--transition-slow), border-color var(--transition-slow);
}
.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-2);
}
.testimonial-quote {
  font-size: 2.5rem;
  line-height: 1;
  color: var(--color-cyan);
  opacity: 0.4;
  margin-bottom: var(--space-4);
  font-family: Georgia, serif;
}
.testimonial-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}
.testimonial-name  { font-weight: 700; font-size: 0.9375rem; }
.testimonial-role  { font-size: 0.8125rem; color: var(--color-text-muted); }
.testimonial-stars { color: #f59e0b; font-size: 0.875rem; margin-top: 2px; }

/* ============================================================
   18. NEWSLETTER SECTION
   ============================================================ */
.newsletter-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-16) var(--space-12);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.newsletter-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(0,212,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.newsletter-form {
  display: flex;
  max-width: 480px;
  margin: var(--space-8) auto 0;
  gap: var(--space-3);
}
.newsletter-input {
  flex: 1;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem var(--space-4);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition-base);
}
.newsletter-input:focus { border-color: var(--color-border-2); }
.newsletter-input::placeholder { color: var(--color-text-dim); }

/* ============================================================
   19. FOOTER
   ============================================================ */
.footer {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding: var(--space-16) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand .nav-logo { margin-bottom: var(--space-4); }
.footer-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}
.footer-social {
  display: flex;
  gap: var(--space-3);
}
.social-link {
  width: 38px; height: 38px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
  text-decoration: none;
}
.social-link:hover {
  background: var(--color-cyan-dim);
  color: var(--color-cyan);
  border-color: var(--color-border-2);
  transform: translateY(-2px);
}

.footer-col-title {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}
.footer-links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-link {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.footer-link:hover { color: var(--color-cyan); }

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-copyright { font-size: 0.875rem; color: var(--color-text-dim); }
.footer-badges {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* ============================================================
   20. AGE VERIFICATION MODAL
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(10px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-12);
  max-width: 480px;
  width: 100%;
  text-align: center;
  position: relative;
  animation: fadeInUp 0.4s var(--transition-spring) both;
}
.modal::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.modal-icon {
  font-size: 3rem;
  margin-bottom: var(--space-5);
}
.modal-title {
  font-size: 1.625rem;
  font-weight: 800;
  margin-bottom: var(--space-3);
}
.modal-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-8);
}
.modal-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}
.modal-disclaimer {
  margin-top: var(--space-6);
  font-size: 0.8125rem;
  color: var(--color-text-dim);
  line-height: 1.5;
}

/* ============================================================
   21. PAGE HEADERS (Shop, About, Contact, Cart)
   ============================================================ */
.page-hero {
  background: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-16) 0 var(--space-12);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 100% at 50% 0%, rgba(0,212,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.page-hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; transition: color var(--transition-base); }
.breadcrumb a:hover { color: var(--color-cyan); }
.breadcrumb-sep { color: var(--color-text-dim); }
.breadcrumb-current { color: var(--color-text); }

/* ============================================================
   22. PRODUCT DETAIL PAGE
   ============================================================ */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.product-image-col { position: sticky; top: calc(var(--nav-height) + 60px); }

.product-main-visual {
  height: 420px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  margin-bottom: var(--space-4);
  overflow: hidden;
  position: relative;
}
.product-main-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(5,8,16,0.4) 100%);
}

.product-thumbnails {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.product-thumb {
  height: 90px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem;
  cursor: pointer;
  transition: border-color var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}
.product-thumb:hover {
  border-color: var(--color-border-2);
  transform: scale(1.03);
}
.product-thumb.active { border-color: var(--color-cyan); }

/* Product info col */
.product-info-col {}

.product-detail-category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
  background: var(--color-cyan-dim);
  border: 1px solid var(--color-border-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.product-detail-name {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-2);
}
.product-detail-subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  margin-bottom: var(--space-5);
}

.product-detail-rating {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.product-detail-rating .rating-value { font-size: 1rem; font-weight: 700; }
.product-detail-rating .rating-count  { font-size: 0.875rem; color: var(--color-text-muted); }

.product-detail-price-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.product-detail-price {
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.product-detail-price-original {
  font-size: 1.25rem;
  color: var(--color-text-dim);
  text-decoration: line-through;
}

.product-specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.product-spec {
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.product-spec-label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); margin-bottom: var(--space-1); }
.product-spec-value { font-size: 0.9375rem; font-weight: 700; }

/* Quantity selector */
.qty-selector {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.qty-selector label { font-size: 0.9rem; font-weight: 600; color: var(--color-text-muted); }
.qty-selector-controls {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.qty-selector-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: none; border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  transition: background var(--transition-base), color var(--transition-base);
}
.qty-selector-btn:hover { background: rgba(255,255,255,0.05); color: var(--color-text); }
.qty-selector-value {
  min-width: 48px;
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  background: none;
  color: var(--color-text);
  font-family: var(--font-sans);
}

/* Product CTA row */
.product-cta-row {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.product-cta-row .btn-primary { flex: 1; }
.wishlist-btn {
  width: 48px; height: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  flex-shrink: 0;
}
.wishlist-btn:hover { background: rgba(239,68,68,0.1); color: #ef4444; border-color: rgba(239,68,68,0.3); }
.wishlist-btn.active { background: rgba(239,68,68,0.1); color: #ef4444; border-color: rgba(239,68,68,0.3); }

/* Trust badges */
.trust-badges {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}
.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.trust-badge i { color: var(--color-cyan); }

/* Product disclaimer */
.product-disclaimer {
  background: rgba(245,158,11,0.07);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: 0.8125rem;
  color: #f59e0b;
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

/* Product tabs */
.product-tabs {
  margin-top: var(--space-6);
}
.tab-list {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}
.tab-btn {
  padding: var(--space-3) var(--space-5);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color var(--transition-base), border-color var(--transition-base);
}
.tab-btn.active {
  color: var(--color-cyan);
  border-bottom-color: var(--color-cyan);
}
.tab-btn:hover:not(.active) { color: var(--color-text); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel p { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.75; margin-bottom: var(--space-4); }
.tab-panel h4 { font-size: 1rem; font-weight: 700; margin-bottom: var(--space-3); margin-top: var(--space-5); }
.tab-panel ul { padding-left: var(--space-5); margin-bottom: var(--space-4); }
.tab-panel ul li { font-size: 0.9375rem; color: var(--color-text-muted); margin-bottom: var(--space-2); line-height: 1.6; list-style: disc; }

/* ============================================================
   23. CART PAGE
   ============================================================ */
.cart-page-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-8);
  align-items: start;
}

.cart-page-items-col {}
.cart-page-title { font-size: 1.25rem; font-weight: 700; margin-bottom: var(--space-6); display: flex; align-items: center; gap: var(--space-3); }

.cart-page-item {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-4);
  transition: border-color var(--transition-base);
}
.cart-page-item:hover { border-color: var(--color-border-2); }
.cart-page-item-visual {
  width: 80px; height: 80px;
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.25rem;
  flex-shrink: 0;
}
.cart-page-item-info { flex: 1; min-width: 0; }
.cart-page-item-cat { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-cyan); margin-bottom: 2px; }
.cart-page-item-name { font-size: 1.0625rem; font-weight: 700; margin-bottom: var(--space-1); }
.cart-page-item-format { font-size: 0.875rem; color: var(--color-text-muted); }
.cart-page-item-price { font-size: 1.25rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; flex-shrink: 0; }
.cart-page-item-controls { display: flex; align-items: center; gap: var(--space-3); margin-top: var(--space-3); }

.cart-empty-page {
  text-align: center;
  padding: var(--space-20) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}
.cart-empty-page-icon { font-size: 4rem; opacity: 0.3; margin-bottom: var(--space-5); }
.cart-empty-page h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: var(--space-3); }
.cart-empty-page p { color: var(--color-text-muted); margin-bottom: var(--space-6); }

/* Order summary */
.order-summary {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: sticky;
  top: calc(var(--nav-height) + 60px);
}
.order-summary-title { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--space-6); }
.order-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  font-size: 0.9375rem;
}
.order-line-label { color: var(--color-text-muted); }
.order-line-value { font-weight: 600; }
.order-line-shipping-free { color: var(--color-success); font-weight: 600; }
.order-divider { border: none; border-top: 1px solid var(--color-border); margin: var(--space-4) 0; }
.order-total { font-size: 1.125rem; font-weight: 800; }
.order-total-value {
  font-size: 1.375rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.promo-code-form {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.promo-input {
  flex: 1;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.625rem var(--space-4);
  color: var(--color-text);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition-base);
}
.promo-input:focus { border-color: var(--color-border-2); }
.promo-input::placeholder { color: var(--color-text-dim); }

.checkout-btn {
  display: block;
  width: 100%;
  padding: 0.9375rem;
  background: var(--gradient-primary);
  color: white;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.checkout-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(0,212,255,0.3);
}

/* ============================================================
   24. ABOUT PAGE
   ============================================================ */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.about-story-visual {
  height: 400px;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-3) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  position: relative;
  overflow: hidden;
}
.about-story-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(0,212,255,0.06) 0%, transparent 70%);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.value-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: transform var(--transition-slow), border-color var(--transition-slow);
}
.value-card:hover { transform: translateY(-4px); border-color: var(--color-border-2); }
.value-icon { font-size: 2rem; margin-bottom: var(--space-4); }
.value-title { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--space-2); }
.value-desc  { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.65; }

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: transform var(--transition-slow), border-color var(--transition-slow);
}
.team-card:hover { transform: translateY(-4px); border-color: var(--color-border-2); }
.team-avatar {
  width: 96px; height: 96px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto var(--space-5);
  position: relative;
}
.team-avatar::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--gradient-primary);
  z-index: -1;
  opacity: 0.3;
}
.team-name    { font-size: 1.125rem; font-weight: 700; margin-bottom: var(--space-1); }
.team-role    { font-size: 0.875rem; color: var(--color-cyan); font-weight: 600; margin-bottom: var(--space-3); }
.team-bio     { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.65; }

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.cert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: transform var(--transition-slow), border-color var(--transition-slow);
}
.cert-card:hover { transform: translateY(-4px); border-color: var(--color-border-2); }
.cert-icon { font-size: 2.5rem; margin-bottom: var(--space-4); color: var(--color-cyan); }
.cert-title { font-size: 1.0625rem; font-weight: 700; margin-bottom: var(--space-2); }
.cert-desc  { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.6; }

/* ============================================================
   25. CONTACT PAGE
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-8);
  align-items: start;
}

.contact-info-col {}
.contact-info-cards { display: flex; flex-direction: column; gap: var(--space-5); }
.contact-info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  transition: transform var(--transition-slow), border-color var(--transition-slow);
}
.contact-info-card:hover { transform: translateY(-2px); border-color: var(--color-border-2); }
.contact-info-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-lg);
  background: var(--color-cyan-dim);
  color: var(--color-cyan);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.contact-info-title { font-size: 0.9375rem; font-weight: 700; margin-bottom: var(--space-2); }
.contact-info-text  { font-size: 0.9rem; color: var(--color-text-muted); line-height: 1.6; }

/* Contact Form */
.contact-form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}
.contact-form-title { font-size: 1.25rem; font-weight: 700; margin-bottom: var(--space-6); }

.form-group { margin-bottom: var(--space-5); }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem var(--space-4);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  appearance: none;
  -webkit-appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-border-2);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.08);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-dim); }
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a8599' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}
.form-select option { background: var(--color-surface-2); }
.form-textarea { resize: vertical; min-height: 140px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-12);
}
.form-success-icon { font-size: 3rem; color: var(--color-success); margin-bottom: var(--space-4); }
.form-success h3  { font-size: 1.25rem; font-weight: 700; margin-bottom: var(--space-2); }
.form-success p   { color: var(--color-text-muted); }

/* FAQ Accordion */
.faq-list { display: flex; flex-direction: column; gap: var(--space-3); }
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition-base);
}
.faq-item.open { border-color: var(--color-border-2); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 600;
  background: none;
  border: none;
  color: var(--color-text);
  width: 100%;
  text-align: left;
  transition: color var(--transition-base);
}
.faq-question:hover { color: var(--color-cyan); }
.faq-icon {
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(180deg); color: var(--color-cyan); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer-inner {
  padding: 0 var(--space-6) var(--space-5);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   26. SCROLL ANIMATIONS
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in {
  opacity: 0;
  transition: opacity 0.65s ease;
}
.fade-in.visible { opacity: 1; }

/* Stagger delays */
.stagger > *:nth-child(1)  { transition-delay:   0ms; }
.stagger > *:nth-child(2)  { transition-delay: 100ms; }
.stagger > *:nth-child(3)  { transition-delay: 200ms; }
.stagger > *:nth-child(4)  { transition-delay: 300ms; }
.stagger > *:nth-child(5)  { transition-delay: 400ms; }
.stagger > *:nth-child(6)  { transition-delay: 500ms; }
.stagger > *:nth-child(7)  { transition-delay: 600ms; }
.stagger > *:nth-child(8)  { transition-delay: 700ms; }
.stagger > *:nth-child(9)  { transition-delay: 800ms; }
.stagger > *:nth-child(10) { transition-delay: 900ms; }
.stagger > *:nth-child(11) { transition-delay:1000ms; }
.stagger > *:nth-child(12) { transition-delay:1100ms; }

/* ============================================================
   27. RELATED PRODUCTS SECTION
   ============================================================ */
.related-products { padding: var(--space-16) 0; }

/* ============================================================
   28. @KEYFRAMES
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}
@keyframes orbFloat {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(30px, -20px) scale(1.05); }
  66%  { transform: translate(-20px, 15px) scale(0.97); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes heroGradient {
  0%   { transform: translateX(-50%) scale(1) rotate(0deg); opacity: 0.6; }
  50%  { transform: translateX(-50%) scale(1.15) rotate(5deg); opacity: 1; }
  100% { transform: translateX(-50%) scale(1.05) rotate(-3deg); opacity: 0.8; }
}
@keyframes slideIn {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(60px) scale(0.95); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to   { opacity: 0; transform: translateX(60px) scale(0.9); }
}
@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position: 200% center; }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 8px rgba(0,212,255,0.3); }
  50%       { box-shadow: 0 0 24px rgba(0,212,255,0.6); }
}

/* ============================================================
   29. MISCELLANEOUS
   ============================================================ */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 2px var(--space-3);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.stock-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  font-weight: 600;
}
.stock-badge.in-stock { color: var(--color-success); }
.stock-badge.out-of-stock { color: var(--color-error); }
.stock-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  animation: pulse-glow 2s ease-in-out infinite;
}
.in-stock .stock-dot { background: var(--color-success); }
.out-of-stock .stock-dot { background: var(--color-error); }

/* ============================================================
   30. RESPONSIVE – 1024px (Tablet)
   ============================================================ */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--nav-height) + 120px);
    padding-bottom: var(--space-16);
    gap: var(--space-10);
    text-align: center;
  }
  .hero-desc { margin: 0 auto var(--space-8); }
  .hero-actions { justify-content: center; }
  .hero-stats  { justify-content: center; }
  .hero-visual { display: none; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .categories-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }

  .about-story { grid-template-columns: 1fr; }
  .about-story-visual { height: 280px; }

  .contact-layout { grid-template-columns: 1fr; }
  .product-detail { grid-template-columns: 1fr; }
  .product-image-col { position: static; }

  .cart-page-layout { grid-template-columns: 1fr; }
  .order-summary { position: static; }

  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }

  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid  { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   31. RESPONSIVE – 768px (Mobile)
   ============================================================ */
@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  .container, .container-sm { padding: 0 var(--space-4); }

  .section { padding: var(--space-16) 0; }

  .section-title { font-size: 1.75rem; }
  .page-hero { padding: var(--space-12) 0 var(--space-10); }
  .page-hero-title { font-size: 2rem; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
  .features-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }

  .newsletter-section { padding: var(--space-10) var(--space-6); }
  .newsletter-form { flex-direction: column; }

  .shop-controls { flex-direction: column; }
  .filter-tabs { justify-content: center; }

  .products-grid { grid-template-columns: 1fr 1fr; gap: var(--space-4); }

  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 280px; }

  .product-tabs .tab-list { overflow-x: auto; }
  .product-detail-price-row { flex-wrap: wrap; }

  .cart-page-item { flex-wrap: wrap; }

  .form-row { grid-template-columns: 1fr; }

  .footer-bottom { flex-direction: column; text-align: center; }

  .modal { padding: var(--space-8) var(--space-6); }
  .modal-actions { flex-direction: column; }
  .modal-actions .btn { width: 100%; }
}

/* ============================================================
   32. RESPONSIVE – 480px (Small Mobile)
   ============================================================ */
@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr; }
  .product-specs-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: var(--space-4); }
  .hero-stats-divider { display: none; }
  .product-cta-row { flex-direction: column; }
  .product-cta-row .wishlist-btn { width: 100%; height: 48px; }
  .trust-badges { justify-content: center; }
  .cart-drawer { width: 100vw; }
  .toast-container { left: var(--space-4); right: var(--space-4); }
  .toast { min-width: 0; }
}

/* ============================================================
   33. LEGAL PAGES
   ============================================================ */
.legal-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.legal-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 2.5rem 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.legal-content h2:first-child { margin-top: 0; }

.legal-content p {
  margin-bottom: 1rem;
  font-size: 0.9375rem;
}

.legal-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content ul li {
  margin-bottom: 0.4rem;
  font-size: 0.9375rem;
}

.legal-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-content strong {
  color: var(--color-text-primary);
}

/* ============================================================
   34. CHECKOUT PAGE
   ============================================================ */
.checkout-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2rem;
  align-items: start;
}

.checkout-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.checkout-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text-primary);
}

.checkout-card-title i { color: var(--accent); }

.checkout-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.checkout-form-grid .full { grid-column: 1 / -1; }

.cform-group { display: flex; flex-direction: column; gap: 0.4rem; }

.cform-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.cform-input, .cform-select {
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.cform-input:focus, .cform-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.12);
}

.cform-input::placeholder { color: var(--color-text-muted); }
.cform-input.error { border-color: #ef4444; }
.cform-error { font-size: 0.75rem; color: #ef4444; margin-top: 2px; display: none; }
.cform-input.error + .cform-error { display: block; }

.payment-methods { display: flex; flex-direction: column; gap: 0.75rem; }

.payment-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

.payment-option:hover { border-color: rgba(0,212,255,0.4); }
.payment-option.selected {
  border-color: var(--accent);
  background: rgba(0,212,255,0.06);
}

.payment-option input[type="radio"] { accent-color: var(--accent); }
.payment-option-label { font-size: 0.9rem; font-weight: 500; }
.payment-option-icons { margin-left: auto; display: flex; gap: 6px; font-size: 1.4rem; }

.promo-row {
  display: flex;
  gap: 0.75rem;
}

.promo-row .cform-input { flex: 1; }

.order-summary-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  position: sticky;
  top: 90px;
}

.order-summary-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.order-summary-items { margin-bottom: 1rem; }

.order-summary-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.875rem;
}

.order-summary-item-emoji {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.order-summary-item-name { flex: 1; font-weight: 500; color: var(--color-text-primary); }
.order-summary-item-qty { color: var(--color-text-muted); font-size: 0.8rem; }
.order-summary-item-price { font-weight: 600; color: var(--color-text-primary); }

.order-summary-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  padding: 0.35rem 0;
  color: var(--color-text-secondary);
}

.order-summary-line.total {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  margin-top: 0.5rem;
}

.order-summary-line.discount { color: #10b981; }

.checkout-submit-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--accent), #0099cc);
  color: #000;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
  transition: all 0.3s;
}

.checkout-submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,212,255,0.35);
}

.checkout-submit-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.checkout-disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0.75rem;
  line-height: 1.5;
}

.checkout-step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 2.5rem;
}

.checkout-step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

.checkout-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--color-border);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.checkout-step.active .checkout-step-num {
  background: var(--accent);
  color: #000;
}

.checkout-step.done .checkout-step-num {
  background: #10b981;
  color: #fff;
}

.checkout-step-line {
  width: 60px;
  height: 1px;
  background: var(--color-border);
  margin: 0 8px;
}

/* Success page */
.success-container {
  text-align: center;
  padding: 4rem 2rem;
  max-width: 560px;
  margin: 0 auto;
}

.success-icon {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: rgba(16,185,129,0.12);
  border: 2px solid rgba(16,185,129,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto 2rem;
  animation: successPop 0.5s cubic-bezier(0.175,0.885,0.32,1.275);
}

@keyframes successPop {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.success-order-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  margin: 1.5rem 0;
  text-align: left;
}

@media (max-width: 900px) {
  .checkout-layout { grid-template-columns: 1fr; }
  .order-summary-card { position: static; }
}

@media (max-width: 600px) {
  .checkout-form-grid { grid-template-columns: 1fr; }
  .checkout-form-grid .full { grid-column: 1; }
}

/* ============================================================
   SKELETON LOADER
   ============================================================ */
@keyframes skeleton-shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton-pulse {
  background: linear-gradient(
    90deg,
    var(--color-surface) 25%,
    var(--color-surface-2) 50%,
    var(--color-surface) 75%
  );
  background-size: 800px 100%;
  animation: skeleton-shimmer 1.4s infinite linear;
  border-radius: var(--radius-sm);
}

.skeleton-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.skeleton-visual {
  height: 200px;
  width: 100%;
}

.skeleton-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skeleton-line {
  height: 14px;
  border-radius: var(--radius-sm);
}

.skeleton-line.short  { width: 40%; }
.skeleton-line.medium { width: 70%; }
.skeleton-line.full   { width: 100%; }
.skeleton-line.title  { height: 20px; width: 85%; }

.skeleton-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-2);
}

.skeleton-price {
  height: 28px;
  width: 80px;
  border-radius: var(--radius-sm);
}

.skeleton-btn {
  height: 36px;
  width: 90px;
  border-radius: var(--radius-full);
}

/* ============================================================
   BACK TO TOP BUTTON
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  box-shadow: var(--shadow-lg), 0 0 20px rgba(0,212,255,0.3);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  box-shadow: var(--shadow-xl), 0 0 28px rgba(0,212,255,0.5);
  transform: translateY(-2px);
}

@media (max-width: 640px) {
  .back-to-top {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
  }
}

/* ============================================================
   THEME TOGGLE BUTTON
   ============================================================ */
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition-base), border-color var(--transition-base),
              color var(--transition-base), transform var(--transition-base);
}

.theme-toggle-btn:hover {
  background: var(--color-surface-2);
  border-color: var(--color-border-2);
  color: var(--color-text);
  transform: translateY(-1px);
}
