/*
 * Atelier Lithos - main.css
 * Inspired by the hero: dark volcanic rock,
 * turquoise water, gold pyrite flecks.
 */

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

:root {
  /* Hero-inspired palette */
  --color-bg:           #0a0e17;
  --color-bg-alt:       #111827;
  --color-surface:      #1a2233;
  --color-surface-lift: #1f2937;

  --color-text:         #f1f5f9;
  --color-text-dim:     #94a3b8;
  --color-text-muted:   #64748b;

  --color-accent:       #2dd4bf;
  --color-accent-dim:   #1a9e8a;
  --color-accent-glow:  #5eead4;
  --color-cyan:         #06b6d4;

  /* Gold - luxury accent, subtle */
  --color-gold:         #c9a94e;
  --color-gold-dim:     #a08030;
  --color-gold-glow:    #e8c85a;

  --color-border:       rgba(45, 212, 191, 0.12);
  --color-border-light: rgba(45, 212, 191, 0.08);

  /* Typography */
  --font-serif:         'Lora', Georgia, 'Times New Roman', serif;
  --font-sans:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --space-xs:  .5rem;
  --space-sm:  .75rem;
  --space-md:  1.5rem;
  --space-lg:  3rem;
  --space-xl:  6rem;
  --space-2xl: 10rem;

  /* Layout */
  --content-max:  72rem;
  --content-narrow: 44rem;
  --nav-height:   4.5rem;

  /* Transitions */
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --duration-slow: .6s;
  --duration-fast: .25s;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

/* Selection */
::selection {
  background: rgba(45, 212, 191, 0.3);
  color: var(--color-text);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.04em;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-logo:hover {
  color: var(--color-accent);
}

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

.nav-links a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-links a:hover {
  color: var(--color-accent);
}

.nav-cta {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-accent);
  border-radius: 100px;
  color: var(--color-accent) !important;
  font-weight: 600 !important;
  transition: all var(--duration-fast) var(--ease-out) !important;
}

.nav-cta:hover {
  background: var(--color-accent);
  color: var(--color-bg) !important;
}

.nav-toggle {
  display: none;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 110;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.3s var(--ease-out),
              opacity 0.3s var(--ease-out);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/hero.png') center center / cover no-repeat;
  will-change: transform;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(10, 14, 23, 0.30) 0%,
      rgba(10, 14, 23, 0.50) 40%,
      rgba(10, 14, 23, 0.85) 80%,
      var(--color-bg) 100%
    );
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(45, 212, 191, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(201, 169, 78, 0.03) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  max-width: var(--content-narrow);
  animation: heroFadeIn 1.2s var(--ease-out) forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-surtitle {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
}

.hero-tagline {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text-dim);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-bg);
  background: var(--color-accent);
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.btn-primary:hover {
  background: var(--color-accent-glow);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(45, 212, 191, 0.25);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text);
  background: transparent;
  border: 1px solid rgba(241, 245, 249, 0.2);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.btn-secondary:hover {
  border-color: var(--color-text);
  transform: translateY(-2px);
}

/* Hero scroll indicator */
.hero-scroll {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding-bottom: var(--space-lg);
  animation: scrollBreathe 2s ease-in-out infinite;
}

@keyframes scrollBreathe {
  0%, 100% { opacity: 0.4; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(4px); }
}

.hero-scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--color-text-muted), transparent);
}

/* Sections */
.section {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-text-dim);
  max-width: 36rem;
  margin: 0 auto;
  line-height: 1.6;
}

/* Divider between sections */
.section-divider {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section-divider hr {
  border: none;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--color-border-light) 20%,
    var(--color-border) 50%,
    var(--color-border-light) 80%,
    transparent
  );
}

/* Social Links (Linktree style) */
.social-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  max-width: 28rem;
  margin: 0 auto;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 1rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}

.social-link:hover {
  background: var(--color-surface-lift);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.social-link-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.social-link:hover .social-link-icon {
  opacity: 1;
}

.social-link .arrow {
  margin-left: auto;
  font-size: 0.8rem;
  opacity: 0.4;
  transition: all var(--duration-fast) var(--ease-out);
}

.social-link:hover .arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* Matières / Stones grid */
.stones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-md);
}

.stone-text {
  max-width: 48rem;
  margin: 0 auto var(--space-xl);
  text-align: center;
  color: var(--color-text-dim);
  line-height: 1.8;
  font-size: 1rem;
}

.stone-card {
  text-align: center;
  padding: var(--space-md) var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}

.stone-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.stone-card img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  margin: 0 auto var(--space-sm);
  border-radius: 50%;
}

.stone-card h3 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.stone-card p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Créations / Bijoux grid */
.bijoux-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-md);
}

.bijou-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-slow) var(--ease-out);
}

.bijou-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.bijou-card-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.bijou-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.bijou-card:hover .bijou-card-image img {
  transform: scale(1.05);
}

.bijou-card-body {
  padding: var(--space-sm) var(--space-md) var(--space-md);
}

.bijou-card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.bijou-card-description {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.bijou-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}

.bijou-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-size: 0.62rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: 100px;
}

.bijou-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  transition: all var(--duration-fast) var(--ease-out);
}

.bijou-card-link:hover {
  color: var(--color-gold-glow);
  gap: 0.6rem;
}

/* Story / About section */
.story-content {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: var(--space-xl);
  align-items: center;
}

.story-text h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.story-text p {
  color: var(--color-text-dim);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.story-visuals {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.story-visual {
  position: relative;
}

.story-visual-image img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 1;
}

.story-visual-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse at center, rgba(45, 212, 191, 0.16) 0%, transparent 70%);
  z-index: -1;
}

/* Connect section */
.connect-content {
  text-align: center;
  max-width: var(--content-narrow);
  margin: 0 auto;
}

.connect-content p {
  color: var(--color-text-dim);
  margin-bottom: var(--space-lg);
  font-size: 1.05rem;
}

/* Footer */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-lg) var(--space-lg);
  margin-top: var(--space-xl);
}

.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  max-width: 24rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-copy {
  text-align: right;
}

.footer-copy p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Page layout (CGV, confidentialité) */
.page-content-container {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  padding-bottom: var(--space-2xl);
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.page-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.15;
}

.page-content h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.page-content h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.page-content p {
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.page-content ul,
.page-content ol {
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: var(--space-md);
  padding-left: 1.5rem;
}

.page-content li {
  margin-bottom: 0.5rem;
}

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

.page-content em {
  font-style: italic;
}

.page-content hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: var(--space-xl) 0;
}

.page-content a {
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
}

.page-content a:hover {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent-glow);
}

.page-content blockquote {
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-md);
  color: var(--color-text-dim);
  font-style: italic;
  margin: var(--space-md) 0;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
  }

  .nav {
    padding: 0 var(--space-md);
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl) var(--space-lg);
    background: #0a0e17;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links a:not(.nav-cta) {
    display: block;
    font-size: 1.25rem;
  }

  .nav-cta {
    font-size: 1rem;
    padding: 0.75rem 2rem;
  }

  .nav-toggle:checked ~ .nav-links {
    display: flex;
  }

  .nav-toggle:checked ~ .nav-hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle:checked ~ .nav-hamburger span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle:checked ~ .nav-hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero-content {
    padding: var(--space-xl) var(--space-md);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-secondary {
    justify-content: center;
  }

  .section {
    padding: var(--space-2xl) var(--space-md);
  }

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

  .stones-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-sm);
  }

  .story-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .story-visuals {
    order: -1;
    flex-direction: row;
  }

  .story-visuals .story-visual {
    flex: 1;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }

  .footer-tagline {
    margin: var(--space-xs) auto 0;
  }

  .footer-links {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
  }

  .footer-copy {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .bijoux-grid {
    grid-template-columns: 1fr;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.8s var(--ease-out) forwards;
}

/* Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}