/* ==========================================================================
   METAXIA MULTIMEDIA - Algorithmic Gnosis
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Dark, immersive palette */
  --color-bg: #0A0A0A;
  --color-bg-elevated: #111111;
  --color-bg-subtle: #1A1A1A;

  --color-text-primary: #F0F0F0;
  --color-text-secondary: #A0A0A0;
  --color-text-muted: #666666;

  --color-accent-gold: #D4AF37;
  --color-accent-green: #00C9A7;
  --color-accent-current: var(--color-accent-gold);

  --color-border: #2A2A2A;
  --color-border-subtle: #1F1F1F;

  /* Typography */
  --font-mono: 'IBM Plex Mono', 'Fira Code', 'Consolas', monospace;
  --font-serif: 'Source Serif 4', 'Iowan Old Style', 'Georgia', serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --font-size-6xl: 5rem;

  /* Spacing - Based on 137 (α ≈ 1/137) */
  --space-unit: 0.25rem;
  --space-1: calc(var(--space-unit) * 1);
  --space-2: calc(var(--space-unit) * 2);
  --space-3: calc(var(--space-unit) * 3);
  --space-4: calc(var(--space-unit) * 4);
  --space-5: calc(var(--space-unit) * 5);
  --space-6: calc(var(--space-unit) * 6);
  --space-8: calc(var(--space-unit) * 8);
  --space-10: calc(var(--space-unit) * 10);
  --space-12: calc(var(--space-unit) * 12);
  --space-16: calc(var(--space-unit) * 16);
  --space-20: calc(var(--space-unit) * 20);
  --space-24: calc(var(--space-unit) * 24);
  --space-32: calc(var(--space-unit) * 32);

  /* Layout */
  --max-width: 1200px;
  --max-width-text: 720px;
  --nav-height: 80px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 600ms ease;

  /* Z-index layers */
  --z-bg: -1;
  --z-base: 1;
  --z-nav: 100;
  --z-modal: 200;
}

/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-serif);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background canvas for subtle animations */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-bg);
  pointer-events: none;
  opacity: 0.15;
}

/* Selection styling */
::selection {
  background: var(--color-accent-gold);
  color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-mono);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: 0.1em;
}

h2 {
  font-size: var(--font-size-2xl);
  letter-spacing: 0.08em;
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--space-4);
}

a {
  color: var(--color-accent-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-green);
}

/* Code/monospace text */
code, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* Emphasis and highlights */
em {
  font-style: italic;
  color: var(--color-text-primary);
}

strong {
  font-weight: 600;
}

.accent {
  color: var(--color-accent-gold);
}

.accent-green {
  color: var(--color-accent-green);
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-8);
  background: linear-gradient(to bottom, var(--color-bg) 0%, transparent 100%);
  z-index: var(--z-nav);
  transition: background var(--transition-base);
}

.main-nav.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
}

.nav-brand {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.brand-link {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.brand-text {
  font-family: var(--font-mono);
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
}

.brand-link:hover .brand-text {
  color: var(--color-accent-gold);
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent-gold);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-text-primary);
}

.nav-link.active {
  color: var(--color-accent-gold);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active::after {
  width: 100%;
  height: 2px;
  background: var(--color-accent-gold);
}

.nav-separator {
  color: var(--color-text-muted);
  margin: 0 var(--space-1);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.toggle-line {
  width: 24px;
  height: 1px;
  background: var(--color-text-primary);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

/* Mobile navigation */
@media (max-width: 1024px) {
  .nav-toggle {
    display: flex;
    z-index: calc(var(--z-nav) + 1);
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
    background: var(--color-bg);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
  }

  .nav-links.open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    font-size: var(--font-size-lg);
  }

  .nav-toggle.active .toggle-line:first-child {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active .toggle-line:last-child {
    transform: rotate(-45deg) translate(5px, -5px);
  }
}

/* --------------------------------------------------------------------------
   Main Content
   -------------------------------------------------------------------------- */
.main-content {
  min-height: 100vh;
}

.page-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + var(--space-16)) var(--space-8) var(--space-16);
}

.text-content {
  max-width: var(--max-width-text);
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Landing Page / Splash
   -------------------------------------------------------------------------- */
.landing-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-8);
  position: relative;
}

.landing-vesica {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 2px;
  height: 40vh;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--color-accent-gold) 30%,
    var(--color-accent-gold) 70%,
    transparent 100%
  );
  opacity: 0.3;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 0.5; }
}

.landing-content {
  position: relative;
  z-index: var(--z-base);
}

.landing-title {
  font-family: var(--font-mono);
  font-size: var(--font-size-5xl);
  font-weight: 700;
  letter-spacing: 0.25em;
  margin-bottom: var(--space-4);
  animation: fadeIn 1.5s ease-out;
}

.landing-subtitle {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-style: italic;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-12);
  animation: fadeIn 1.5s ease-out 0.3s both;
}

.landing-cta {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  letter-spacing: 0.15em;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  padding: var(--space-4) var(--space-8);
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  animation: fadeIn 1.5s ease-out 0.6s both;
}

.landing-cta:hover {
  color: var(--color-text-primary);
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.15);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */
.section-header {
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border-subtle);
}

.section-number {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-accent-gold);
  letter-spacing: 0.2em;
  margin-bottom: var(--space-2);
  display: block;
}

.section-title {
  margin-bottom: var(--space-3);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
}

/* --------------------------------------------------------------------------
   Cards & Book Items
   -------------------------------------------------------------------------- */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.book-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  padding: var(--space-6);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.book-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.book-card:hover {
  border-color: var(--color-border);
  transform: translateY(-2px);
}

.book-card:hover::before {
  transform: scaleX(1);
}

.book-cover {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--color-bg-subtle);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-cover-placeholder {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.book-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

.book-meta {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.book-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Two Column Layout (Essay Pages)
   -------------------------------------------------------------------------- */
.two-column-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-12);
  align-items: start;
}

.main-column {
  font-size: var(--font-size-lg);
  line-height: 1.8;
}

.side-column {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-8));
}

.side-note {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: var(--space-4);
  border-left: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-6);
}

.side-note-accent {
  border-left-color: var(--color-accent-gold);
}

@media (max-width: 900px) {
  .two-column-layout {
    grid-template-columns: 1fr;
  }

  .side-column {
    position: static;
    order: -1;
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-border-subtle);
    margin-bottom: var(--space-8);
  }
}

/* --------------------------------------------------------------------------
   Data Tables
   -------------------------------------------------------------------------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  margin: var(--space-8) 0;
}

.data-table th,
.data-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border-subtle);
}

.data-table th {
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.data-table tr:hover td {
  background: var(--color-bg-subtle);
}

.data-table .value {
  color: var(--color-accent-gold);
}

/* --------------------------------------------------------------------------
   Dividers & Decorative Elements
   -------------------------------------------------------------------------- */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border-subtle);
  margin: var(--space-12) 0;
  position: relative;
}

.divider-vesica {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.divider-vesica::before,
.divider-vesica::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border-subtle);
}

.vesica-symbol {
  font-size: var(--font-size-lg);
  color: var(--color-accent-gold);
  opacity: 0.5;
}

/* --------------------------------------------------------------------------
   Blockquotes
   -------------------------------------------------------------------------- */
blockquote {
  font-style: italic;
  padding-left: var(--space-6);
  border-left: 2px solid var(--color-accent-gold);
  margin: var(--space-8) 0;
  color: var(--color-text-secondary);
}

blockquote cite {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-style: normal;
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  padding: var(--space-16) var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.footer-text {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  letter-spacing: 0.15em;
  color: var(--color-text-secondary);
}

.footer-tagline {
  font-style: italic;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.footer-constant {
  color: var(--color-accent-gold);
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-3) var(--space-6);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
  transition: left var(--transition-base);
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  border-color: var(--color-accent-gold);
  color: var(--color-accent-gold);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.15);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, #c9a42f 100%);
  border-color: var(--color-accent-gold);
  color: var(--color-bg);
  font-weight: 600;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #e5c040 0%, var(--color-accent-gold) 100%);
  color: var(--color-bg);
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.3);
}

.btn-glow {
  animation: btn-glow-pulse 3s ease-in-out infinite;
}

@keyframes btn-glow-pulse {
  0%, 100% { box-shadow: 0 0 10px rgba(212, 175, 55, 0.1); }
  50% { box-shadow: 0 0 25px rgba(212, 175, 55, 0.25); }
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-16 { margin-bottom: var(--space-16); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-16 { margin-top: var(--space-16); }

.opacity-50 { opacity: 0.5; }
.opacity-70 { opacity: 0.7; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   Glitch Effect (Subtle)
   -------------------------------------------------------------------------- */
.glitch {
  position: relative;
}

.glitch:hover::before,
.glitch:hover::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.glitch:hover::before {
  left: 2px;
  text-shadow: -2px 0 var(--color-accent-green);
  animation: glitch-1 0.3s linear infinite;
}

.glitch:hover::after {
  left: -2px;
  text-shadow: 2px 0 var(--color-accent-gold);
  animation: glitch-2 0.3s linear infinite;
}

@keyframes glitch-1 {
  0%, 100% { clip-path: inset(0 0 90% 0); }
  20% { clip-path: inset(30% 0 50% 0); }
  40% { clip-path: inset(60% 0 20% 0); }
  60% { clip-path: inset(10% 0 70% 0); }
  80% { clip-path: inset(80% 0 5% 0); }
}

@keyframes glitch-2 {
  0%, 100% { clip-path: inset(80% 0 5% 0); }
  20% { clip-path: inset(10% 0 70% 0); }
  40% { clip-path: inset(50% 0 30% 0); }
  60% { clip-path: inset(20% 0 60% 0); }
  80% { clip-path: inset(90% 0 0 0); }
}

/* --------------------------------------------------------------------------
   Responsive Typography
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-5xl: 2.5rem;
    --font-size-6xl: 3rem;
  }

  .landing-title {
    letter-spacing: 0.15em;
  }
}

/* --------------------------------------------------------------------------
   Shopping Cart & Checkout
   -------------------------------------------------------------------------- */
.cart-indicator {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: calc(var(--z-nav) + 1);
}

.cart-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}

.cart-btn:hover {
  border-color: var(--color-accent-gold);
}

.cart-btn .cart-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 var(--space-1);
  background: var(--color-accent-gold);
  color: var(--color-bg);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: 2px;
}

.cart-btn.empty .cart-count {
  display: none;
}

/* Cart Drawer */
.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 450px;
  height: 100vh;
  background: var(--color-bg);
  border-left: 1px solid var(--color-border);
  z-index: var(--z-modal);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
}

.cart-drawer.open {
  transform: translateX(0);
}

.cart-drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.cart-drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border-subtle);
}

.cart-header h2 {
  font-size: var(--font-size-lg);
  margin: 0;
}

.cart-close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--space-2);
  transition: color var(--transition-fast);
}

.cart-close:hover {
  color: var(--color-text-primary);
}

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

.cart-item {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.cart-item-image {
  width: 80px;
  height: 100px;
  background: var(--color-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.cart-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item-details h3 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-1);
}

.cart-item-price {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-accent-gold);
}

.cart-item-remove {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-2);
  transition: color var(--transition-fast);
}

.cart-item-remove:hover {
  color: var(--color-accent-gold);
}

.cart-empty {
  text-align: center;
  padding: var(--space-12);
  color: var(--color-text-muted);
}

.cart-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-elevated);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
}

.cart-total-label {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.cart-total-value {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-accent-gold);
}

.cart-footer .btn {
  width: 100%;
  text-align: center;
}

/* Checkout Page */
.checkout-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--space-12);
  align-items: start;
}

.checkout-form {
  background: var(--color-bg-elevated);
  padding: var(--space-8);
  border: 1px solid var(--color-border-subtle);
}

.form-section {
  margin-bottom: var(--space-8);
}

.form-section h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-subtle);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group select {
  padding: var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent-gold);
}

.checkout-summary {
  background: var(--color-bg-elevated);
  padding: var(--space-6);
  border: 1px solid var(--color-border-subtle);
  position: sticky;
  top: calc(var(--nav-height) + var(--space-8));
}

.checkout-summary h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
}

.summary-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: var(--font-size-sm);
}

.summary-item:last-of-type {
  border-bottom: none;
}

.summary-total {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-4);
  margin-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
}

.summary-total .label {
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.summary-total .value {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-accent-gold);
}

/* Product Page */
.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.product-image {
  aspect-ratio: 3/4;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-gold), var(--color-accent-green));
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-image-placeholder {
  font-family: var(--font-mono);
  font-size: var(--font-size-2xl);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

.product-details h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

.product-meta {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.product-price {
  font-family: var(--font-mono);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-6);
}

.product-description {
  margin-bottom: var(--space-8);
  line-height: 1.8;
}

.product-features {
  list-style: none;
  padding: 0;
  margin: var(--space-6) 0;
}

.product-features li {
  padding: var(--space-2) 0;
  padding-left: var(--space-6);
  border-left: 2px solid var(--color-border-subtle);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.product-features li:hover {
  border-left-color: var(--color-accent-gold);
  color: var(--color-text-primary);
}

.product-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .product-layout,
  .checkout-layout {
    grid-template-columns: 1fr;
  }

  .checkout-summary {
    position: static;
  }
}

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

/* --------------------------------------------------------------------------
   Navigation Right Section
   -------------------------------------------------------------------------- */
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-lang-toggle {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  letter-spacing: 0.1em;
  padding-left: var(--space-6);
  border-left: 1px solid var(--color-border-subtle);
}

.nav-lang-toggle .lang-active {
  color: var(--color-text-primary);
}

.nav-lang-toggle .lang-link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-lang-toggle .lang-link:hover {
  color: var(--color-accent-gold);
}