/* ============================================================
   SAL THE AGORIST — Design Tokens & Component Styles
   Art Direction: Dark underground intellectual, manifesto aesthetic
   Palette: Near-black + warm copper/amber accent
   Typography: Clash Display (headings) + Satoshi (body)
   ============================================================ */

/* --- 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, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);
}

/* --- SPACING --- */
:root {
  --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;
}

/* --- FONTS --- */
:root {
  --font-display: 'Clash Display', 'Arial Black', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

/* --- COLOR PALETTE: Dark Underground Copper --- */
:root,
[data-theme='dark'] {
  /* Surfaces — near-black with warm undertone */
  --color-bg: #0c0b09;
  --color-surface: #141310;
  --color-surface-2: #1a1916;
  --color-surface-offset: #1e1d1a;
  --color-surface-offset-2: #252420;
  --color-surface-dynamic: #2d2c28;
  --color-divider: #2a2925;
  --color-border: #3a3834;

  /* Text */
  --color-text: #e8e4dc;
  --color-text-muted: #9a9590;
  --color-text-faint: #5e5a55;
  --color-text-inverse: #0c0b09;

  /* Primary Accent — Warm Copper */
  --color-primary: #c47a2e;
  --color-primary-hover: #d98f3e;
  --color-primary-active: #a86520;
  --color-primary-highlight: #2e2419;

  /* Secondary — Faded Gold */
  --color-secondary: #a89060;
  --color-secondary-hover: #bfa470;

  /* Error */
  --color-error: #c44a4a;

  /* Success */
  --color-success: #5a9a50;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* Light mode */
[data-theme='light'] {
  --color-bg: #f5f2ec;
  --color-surface: #ebe8e1;
  --color-surface-2: #e2dfd8;
  --color-surface-offset: #ddd9d1;
  --color-surface-offset-2: #d4d0c8;
  --color-surface-dynamic: #ccc8c0;
  --color-divider: #c4c0b8;
  --color-border: #b8b4ac;

  --color-text: #1a1815;
  --color-text-muted: #6a665f;
  --color-text-faint: #9a968e;
  --color-text-inverse: #f5f2ec;

  --color-primary: #9a5c15;
  --color-primary-hover: #7d4a0e;
  --color-primary-active: #5e3808;
  --color-primary-highlight: #ece0cf;

  --color-secondary: #7a6840;
  --color-secondary-hover: #665530;

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.08);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.1);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.14);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg: #f5f2ec;
    --color-surface: #ebe8e1;
    --color-surface-2: #e2dfd8;
    --color-surface-offset: #ddd9d1;
    --color-surface-offset-2: #d4d0c8;
    --color-surface-dynamic: #ccc8c0;
    --color-divider: #c4c0b8;
    --color-border: #b8b4ac;
    --color-text: #1a1815;
    --color-text-muted: #6a665f;
    --color-text-faint: #9a968e;
    --color-text-inverse: #f5f2ec;
    --color-primary: #9a5c15;
    --color-primary-hover: #7d4a0e;
    --color-primary-active: #5e3808;
    --color-primary-highlight: #ece0cf;
    --color-secondary: #7a6840;
    --color-secondary-hover: #665530;
    --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.08);
    --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.1);
    --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.14);
  }
}

/* ============================================================
   SVG GRAIN OVERLAY
   ============================================================ */
svg.grain-defs {
  position: absolute;
  width: 0;
  height: 0;
  pointer-events: none;
}

.grain-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  mix-blend-mode: overlay;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.container--default {
  max-width: var(--content-default);
}

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.site-header--hidden {
  transform: translateY(-100%);
}

.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.site-logo svg {
  width: 32px;
  height: 32px;
}

.site-logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.site-logo-text span {
  color: var(--color-primary);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-desktop a {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}

.nav-desktop a:hover {
  color: var(--color-primary);
}

.nav-desktop a.active {
  color: var(--color-primary);
}

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

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 4px 0;
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

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

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--color-text);
  transition: color var(--transition-interactive);
}

.mobile-menu a:hover {
  color: var(--color-primary);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-32) var(--space-6) var(--space-12);
  position: relative;
  overflow: hidden;
}

@media (max-width: 767px) {
  .hero {
    padding: var(--space-24) var(--space-4) var(--space-8);
    min-height: 90dvh;
  }
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    var(--color-bg) 0%,
    oklch(from var(--color-bg) l c h / 0.7) 25%,
    oklch(from var(--color-bg) l c h / 0.3) 55%,
    oklch(from var(--color-bg) l c h / 0.1) 100%
  );
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.6;
  filter: grayscale(0.5) contrast(1.15);
}

.hero-content {
  position: relative;
  max-width: var(--content-wide);
  margin-inline: auto;
  width: 100%;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-hero);
  line-height: 0.9;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  word-break: break-word;
  overflow-wrap: break-word;
}

@media (max-width: 767px) {
  .hero-title {
    font-size: var(--text-2xl);
  }
}

.hero-title .accent {
  color: var(--color-primary);
  display: block;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 48ch;
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-bg);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid oklch(from var(--color-text) l c h / 0.2);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============================================================
   MANIFESTO / PHILOSOPHY SECTION
   ============================================================ */
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  padding-inline: var(--space-4);
}

.section--bordered {
  border-top: 1px solid var(--color-divider);
}

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.section-heading {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-2xl);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.section-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 60ch;
}

/* Philosophy grid */
.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--content-wide);
  margin-inline: auto;
}

@media (min-width: 768px) {
  .philosophy-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}

.philosophy-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.philosophy-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.tenet {
  padding-left: var(--space-6);
  border-left: 2px solid var(--color-divider);
  transition: border-color 0.3s var(--ease-out);
}

.tenet:hover {
  border-left-color: var(--color-primary);
}

.tenet-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.tenet-body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================================
   BOOKS SECTION
   ============================================================ */
.books-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--content-wide);
  margin-inline: auto;
}

@media (min-width: 640px) {
  .books-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: var(--space-6);
  }
}

.book-card {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive);
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: oklch(from var(--color-primary) l c h / 0.3);
}

.book-card-cover {
  aspect-ratio: 2/3;
  overflow: hidden;
  background: var(--color-surface-offset);
}

.book-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}

.book-card:hover .book-card-cover img {
  transform: scale(1.03);
}

.book-card-content {
  padding: var(--space-5);
}

.book-card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.book-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.book-card-tag {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ============================================================
   SUBVERSIVE SPECTRUM (Podcast/Blog)
   ============================================================ */
.spectrum-feature {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: var(--content-wide);
  margin-inline: auto;
  align-items: center;
}

@media (min-width: 768px) {
  .spectrum-feature {
    grid-template-columns: 1fr 1fr;
  }
}

.spectrum-visual {
  aspect-ratio: 16/10;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
}

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

.spectrum-visual-badge {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.spectrum-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.spectrum-info .section-heading {
  margin-bottom: 0;
}

.spectrum-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ============================================================
   APPEARANCES / SPEAKING
   ============================================================ */
.appearances-list {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
}

.appearance-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-divider);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-interactive);
}

@media (min-width: 640px) {
  .appearance-item {
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--space-8);
  }
}

.appearance-item:hover {
  background: var(--color-surface);
}

.appearance-date {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.appearance-info h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.appearance-info p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.appearance-arrow {
  color: var(--color-text-faint);
  transition: color var(--transition-interactive), transform var(--transition-interactive);
}

.appearance-item:hover .appearance-arrow {
  color: var(--color-primary);
  transform: translateX(4px);
}

/* ============================================================
   SUPPORT SECTION
   ============================================================ */
.support-section {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 5vw, var(--space-16));
  max-width: var(--content-wide);
  margin-inline: auto;
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
}

.support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .support-grid {
    grid-template-columns: 3fr 2fr;
    gap: var(--space-12);
    align-items: start;
  }
}

.coindonor-wrap {
  width: 100%;
}

.coindonor-wrap iframe,
.coindonor-wrap .coind-donation {
  width: 100% !important;
  max-width: 100% !important;
}

.crypto-address {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-offset);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  border: 1px solid oklch(from var(--color-text) l c h / 0.04);
}

.crypto-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  min-width: 60px;
}

.crypto-addr {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--color-text-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  cursor: pointer;
  transition: color var(--transition-interactive);
}

.crypto-addr:hover {
  color: var(--color-text-muted);
}

.crypto-copy {
  color: var(--color-text-faint);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.crypto-copy:hover {
  color: var(--color-primary);
  background: var(--color-surface-dynamic);
}

.support-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.support-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-offset);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: var(--text-sm);
  border: 1px solid oklch(from var(--color-text) l c h / 0.04);
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
}

.support-link:hover {
  background: var(--color-surface-dynamic);
  border-color: oklch(from var(--color-primary) l c h / 0.3);
  transform: translateY(-1px);
}

.support-link svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ============================================================
   PULL QUOTE
   ============================================================ */
.pull-quote {
  max-width: var(--content-default);
  margin-inline: auto;
  padding: clamp(var(--space-8), 6vw, var(--space-16)) var(--space-4);
  text-align: center;
}

.pull-quote blockquote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-4);
}

.pull-quote cite {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-style: normal;
  color: var(--color-text-faint);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-12) var(--space-4);
}

.footer-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-12);
  }
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 40ch;
  line-height: 1.6;
  margin-top: var(--space-4);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

.footer-bottom {
  max-width: var(--content-wide);
  margin-inline: auto;
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-socials {
  display: flex;
  gap: var(--space-3);
}

.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.footer-socials a:hover {
  color: var(--color-primary);
  background: var(--color-surface-offset);
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 100%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* Fallback for browsers without scroll-driven animations */
@supports not (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    transition: opacity 0.6s var(--ease-out);
  }
  .fade-in.visible {
    opacity: 1;
  }
}

/* ============================================================
   RESPONSIVE ADJUSTMENTS
   ============================================================ */
@media (max-width: 767px) {
  .site-header {
    padding: var(--space-3) var(--space-4);
  }

  .site-logo-text {
    display: none;
  }

  .hero-bg img {
    opacity: 0.45;
  }

  .section {
    padding-inline: var(--space-4);
  }

  .support-section {
    border-radius: var(--radius-lg);
    padding: var(--space-6);
  }

  .crypto-address {
    flex-wrap: wrap;
  }

  .crypto-addr {
    font-size: 0.6rem;
  }
}