/* ==========================================================================
   Driftwood Forge — Design Tokens
   ========================================================================== */

:root,
[data-theme='light'] {
  /* Surfaces — warm driftwood sand */
  --color-bg: #f5f1e9;
  --color-surface: #faf7f1;
  --color-surface-2: #fffdf9;
  --color-surface-offset: #ece3d2;
  --color-surface-offset-2: #e2d7c1;
  --color-divider: #dfd4bd;
  --color-border: #d0c2a4;

  /* Text — warm charcoal */
  --color-text: #2a2419;
  --color-text-muted: #6e6350;
  --color-text-faint: #a99b83;
  --color-text-inverse: #f7f2e8;

  /* Primary accent — ember copper */
  --color-primary: #b85c1e;
  --color-primary-hover: #8f4515;
  --color-primary-active: #6d340f;
  --color-primary-highlight: #e9d2bb;

  /* Secondary accent — solved-blue (echoes the game's solved-digit color) */
  --color-blue: #1d5f8a;
  --color-blue-hover: #164a6d;
  --color-blue-highlight: #cfe0e9;

  /* Error/notification — magenta ember (echoes the game's error color) */
  --color-notification: #a13355;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.03 60 / 0.08);
  --shadow-md: 0 6px 20px oklch(0.2 0.03 60 / 0.12);
  --shadow-lg: 0 20px 48px oklch(0.2 0.03 60 / 0.2);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --font-display: 'Boska', Georgia, serif;
  --font-body: 'Switzer', 'Work Sans', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #17130e;
  --color-surface: #1c1712;
  --color-surface-2: #211b15;
  --color-surface-offset: #241d16;
  --color-surface-offset-2: #2c2419;
  --color-divider: #322a1f;
  --color-border: #423727;

  --color-text: #ece3d3;
  --color-text-muted: #a8987d;
  --color-text-faint: #6f6250;
  --color-text-inverse: #1a1610;

  --color-primary: #e08a41;
  --color-primary-hover: #eda05e;
  --color-primary-active: #f2b578;
  --color-primary-highlight: #4a3421;

  --color-blue: #6fa8cc;
  --color-blue-hover: #8fbcda;
  --color-blue-highlight: #24333d;

  --color-notification: #d97a97;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 20px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 20px 48px oklch(0 0 0 / 0.5);
}

/* Type scale */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  --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;
  --space-32: 8rem;
}

/* ==========================================================================
   Base look
   ========================================================================== */

body {
  overflow-x: hidden;
}

.wrap {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.eyebrow::before {
  content: '';
  width: 1.5rem;
  height: 1px;
  background: var(--color-primary);
}

.section-head {
  max-width: 46rem;
  margin-bottom: var(--space-12);
}
.section-head h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-3);
}
.section-head p {
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: var(--space-4);
  transition:
    background-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-inverse);
  text-shadow: 0 1px 6px oklch(0 0 0 / 0.5);
}
.site-header.is-scrolled .brand {
  color: var(--color-text);
  text-shadow: none;
}
.brand svg {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
}
.brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text-inverse);
  opacity: 0.85;
  text-shadow: 0 1px 6px oklch(0 0 0 / 0.5);
}
.site-header.is-scrolled .nav-links a {
  color: var(--color-text);
  text-shadow: none;
}
.nav-links a:hover {
  opacity: 1;
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  color: var(--color-text-inverse);
  border: 1px solid color-mix(in oklab, var(--color-text-inverse) 30%, transparent);
}
.site-header.is-scrolled .theme-toggle {
  color: var(--color-text);
  border-color: var(--color-border);
}
.theme-toggle:hover {
  background: color-mix(in oklab, var(--color-primary) 15%, transparent);
  border-color: var(--color-primary);
}

.nav-toggle {
  display: none;
  width: 2.25rem;
  height: 2.25rem;
  color: var(--color-text-inverse);
}
.site-header.is-scrolled .nav-toggle {
  color: var(--color-text);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  border-color: color-mix(in oklab, var(--color-text-inverse) 40%, transparent);
  color: var(--color-text-inverse);
}
.btn-ghost:hover {
  border-color: var(--color-text-inverse);
  background: color-mix(in oklab, var(--color-text-inverse) 12%, transparent);
}
[data-theme] .btn-ghost.on-light {
  border-color: var(--color-border);
  color: var(--color-text);
}
[data-theme] .btn-ghost.on-light:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 8%, transparent);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-block: var(--space-32) var(--space-20);
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}
.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(100deg, oklch(0.12 0.02 60 / 0.94) 0%, oklch(0.12 0.02 60 / 0.72) 42%, oklch(0.12 0.02 60 / 0.28) 75%),
    linear-gradient(0deg, oklch(0.1 0.02 60 / 0.5), transparent 40%);
}

.hero-content {
  max-width: 46rem;
  color: var(--color-text-inverse);
}
.hero-wordmark {
  width: min(30rem, 82vw);
  margin-bottom: var(--space-8);
  filter: drop-shadow(0 12px 30px oklch(0 0 0 / 0.4));
}
.hero-content .eyebrow {
  color: #f2b578;
}
.hero-content .eyebrow::before {
  background: #f2b578;
}
.hero-tagline {
  font-size: var(--text-lg);
  color: color-mix(in oklab, var(--color-text-inverse) 82%, transparent);
  margin-top: var(--space-5);
  max-width: 42ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.hero-scroll-cue {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: color-mix(in oklab, var(--color-text-inverse) 65%, transparent);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob {
  0%,
  100% {
    transform: translate(-50%, 0);
  }
  50% {
    transform: translate(-50%, 8px);
  }
}

/* ==========================================================================
   Studio section
   ========================================================================== */

.studio {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.studio-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.studio-copy p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-top: var(--space-4);
}
.studio-copy p:first-of-type {
  margin-top: 0;
}
.studio-copy strong {
  color: var(--color-text);
  font-weight: 600;
}

.location-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
}
.location-badge svg {
  width: 1rem;
  height: 1rem;
  color: var(--color-primary);
}

.values {
  display: grid;
  gap: var(--space-6);
}
.value-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.value-card svg {
  width: 1.75rem;
  height: 1.75rem;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.value-card h3 {
  font-size: var(--text-base);
  font-family: var(--font-body);
  font-weight: 700;
}
.value-card p {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Games section
   ========================================================================== */

.games {
  background: var(--color-bg);
}

.game-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-12);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}

.game-art {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 2 / 3;
}
.game-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.game-art-badge {
  position: absolute;
  right: var(--space-4);
  bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4) var(--space-2) var(--space-2);
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  box-shadow: var(--shadow-md);
}
.game-art-badge img {
  width: 1.75rem;
  height: 1.75rem;
  object-fit: contain;
  flex-shrink: 0;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary-active, var(--color-primary));
}
[data-theme='dark'] .status-pill {
  color: var(--color-primary);
}
.status-pill::before {
  content: '';
  width: 0.4rem;
  height: 0.4rem;
  border-radius: var(--radius-full);
  background: currentColor;
}

.game-body h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-4);
}
.game-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  font-style: italic;
  margin-top: var(--space-1);
}
.game-body > p {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
}

.feature-list {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.feature-list svg {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.2em;
  color: var(--color-blue);
}
.feature-list strong {
  font-weight: 600;
}

.game-links {
  margin-top: var(--space-6);
}

.palette-note {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding: var(--space-4);
  background: var(--color-surface-offset);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.palette-dots {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
}
.dot {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid color-mix(in oklab, var(--color-text) 15%, transparent);
}
.dot.given {
  background: var(--color-text);
}
.dot.solved {
  background: var(--color-blue);
}
.dot.error {
  background: var(--color-notification);
}

/* ==========================================================================
   Achievements section
   ========================================================================== */

.achievements {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.achievement-tiers,
.achievement-flagships {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
}
.achievement-flagships {
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.achievement-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
}
.achievement-badge img {
  width: 100%;
  max-width: 7rem;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}
.achievement-badge-sm img {
  max-width: 5rem;
}
.achievement-badge span {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
}

.achievements-note {
  margin-top: var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  text-align: center;
}

/* ==========================================================================
   Follow / Contact
   ========================================================================== */

.follow {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
}
.follow .wrap {
  text-align: center;
}
.follow .section-head {
  margin-inline: auto;
  text-align: center;
}
.follow .eyebrow {
  justify-content: center;
}
.follow-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.follow-note {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
}
.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.footer-brand svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-primary);
}
.footer-brand span {
  font-family: var(--font-display);
  font-size: var(--text-base);
}
.footer-meta-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.footer-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: right;
}
.footer-legal {
  opacity: 0.75;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 860px) {
  .studio-grid,
  .game-card {
    grid-template-columns: 1fr;
  }
  .achievement-tiers,
  .achievement-flagships {
    grid-template-columns: repeat(3, 1fr);
  }
  .game-art {
    max-width: 20rem;
    margin-inline: auto;
    width: 100%;
  }
  .nav-links {
    position: fixed;
    top: 4.25rem;
    left: var(--space-4);
    right: var(--space-4);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-lg);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity var(--transition-interactive),
      transform var(--transition-interactive);
  }
  .nav-links a {
    color: var(--color-text) !important;
    width: 100%;
    padding: var(--space-3) var(--space-2);
    opacity: 1;
  }
  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .footer-grid {
    flex-direction: column;
    text-align: center;
  }
  .footer-meta-group {
    align-items: center;
  }
  .footer-meta {
    text-align: center;
  }
}

@media (max-width: 600px) {
  .hero-wordmark {
    width: 88vw;
  }
  .game-card {
    padding: var(--space-5);
  }
  .achievement-tiers,
  .achievement-flagships {
    grid-template-columns: repeat(2, 1fr);
  }
}