:root {
  --color-accent: #87171a;
  --color-accent-highlight: #9d1b1e;

  --color-text-dark_theme: #ebebeb;
  --color-text-muted-dark_theme: #c8c8c8;
  --color-bg-dark_theme: #0d0d0d;
  --color-bg-elevated-dark_theme: #141414;
  --color-logo-faint-dark_theme: #191919;
  --color-border-dark_theme: #2d2d2d;
  --color-divider-dark_theme: #191919;

  --color-text-light_theme: #191919;
  --color-text-muted-light_theme: #474747;
  --color-bg-light_theme: #f7f7f7;
  --color-bg-elevated-light_theme: #fafafa;
  --color-logo-faint-light_theme: #e1e1e1;
  --color-border-light_theme: #323232;
  --color-divider-light_theme: #191919;

  --radius-card: 1rem;
  --radius-pill: 999px;

  --sp-1: 0.5rem;
  --sp-2: 0.75rem;
  --sp-3: 1rem;
  --sp-4: 1.5rem;
  --sp-5: 2rem;

  /* Font tokens */
  --font-display: "Trajan Pro", "Cinzel", Georgia, serif;
  --font-body: "Minion Pro", Georgia, "Times New Roman", serif;
  --font-ui: Georgia, serif;
  --font-mono: monospace;

  /* Logo interaction */
  --logo-zoom-scale: 1.15;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: var(--sp-5) var(--sp-3);
  background: var(--color-bg-dark_theme);
  color: var(--color-text-dark_theme);
  font-family: var(--font-body);
  line-height: 1.7;
}

.page {
  max-width: 1120px;
  margin: 0 auto;
}

.layout-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-5);
  align-items: flex-start;
}

.card-column {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

@media (max-width: 900px) {
  body {
    padding: var(--sp-4) var(--sp-2);
  }

  .layout-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 600px) {
  body {
    padding: var(--sp-3) var(--sp-2);
  }

  .card {
    padding: var(--sp-3);
  }
}

/* Layout spacing */

#typography {
  margin-top: var(--sp-5);
}

.type-columns--spaced {
  margin-top: var(--sp-4);
}

#layout {
  margin-top: var(--sp-5);
}

.theme-code-section {
  margin-top: var(--sp-5);
}

.theme-code-grid {
  margin-top: var(--sp-3);
}

.type-label--spaced {
  margin-top: var(--sp-2);
}

/* Top Navigation */

.top-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  margin-bottom: var(--sp-4);
  padding: 0.5rem 0;
  background: linear-gradient(
    to bottom,
    var(--color-bg-elevated-dark_theme),
    var(--color-bg-dark_theme)
  );
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider-dark_theme);
}

.top-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

.top-nav__brand {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.top-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.top-nav__link {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text-muted-dark_theme);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-dark_theme);
  background: var(--color-bg-dark_theme);
  transition:
    background 150ms ease,
    color 150ms ease,
    border-color 150ms ease,
    transform 80ms ease;
}

/* Match btn-secondary-dark hover */
.top-nav__link:hover {
  background: var(--color-border-dark_theme);
  border-color: var(--color-border-dark_theme);
  color: var(--color-text-dark_theme);
  transform: translateY(-1px);
}

.top-nav__link--active {
  border-color: var(--color-accent);
  background: var(--color-accent-highlight);
  color: var(--color-text-dark_theme);
}

@media (max-width: 720px) {
  .top-nav__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .top-nav__links {
    justify-content: flex-start;
  }
}

/* Headings - Dark Theme */

.h1-dark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-dark_theme);
}

.h2-dark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-dark_theme);
}

.h3-dark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-dark_theme);
}

.h4-dark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted-dark_theme);
}

.h5-dark {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted-dark_theme);
}

/* Dark - explicit fallback variants */

.h3-dark--cinzel {
  font-family: "Cinzel", Georgia, serif;
}

.h3-dark--georgia {
  font-family: Georgia, "Times New Roman", serif;
}

/* Headings - Light Theme */

.h1-light {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-light_theme);
}

.h2-light {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-light_theme);
}

.h3-light {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-light_theme);
}

.h4-light {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted-light_theme);
}

.h5-light {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted-light_theme);
}

.h3-light--cinzel {
  font-family: "Cinzel", Georgia, serif;
}

.h3-light--georgia {
  font-family: Georgia, "Times New Roman", serif;
}

/* Text Styles */

.text {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  margin: 0 0 var(--sp-2);
}

.text-dark {
  color: var(--color-text-dark_theme);
}

.text-muted-dark {
  color: var(--color-text-muted-dark_theme);
  font-size: 0.95rem;
}

.text-light {
  color: var(--color-text-light_theme);
}

.text-muted-light {
  color: var(--color-text-muted-light_theme);
  font-size: 0.95rem;
}

.text--georgia {
  font-family: Georgia, "Times New Roman", serif;
}

.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted-dark_theme);
  margin-bottom: var(--sp-1);
}

.divider {
  height: 1px;
  background: var(--color-divider-dark_theme);
  margin: var(--sp-3) 0 var(--sp-2);
}

/* Cards */

.card {
  border-radius: var(--radius-card);
  padding: var(--sp-4);
  border: 1px solid;
}

.card-dark {
  background: var(--color-bg-elevated-dark_theme);
  color: var(--color-text-dark_theme);
  border-color: var(--color-border-dark_theme);
}

.card-light {
  background: var(--color-bg-elevated-light_theme);
  color: var(--color-text-light_theme);
  border-color: var(--color-border-light_theme);
}

.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--color-border-dark_theme);
}

.card-tag-light {
  border-color: var(--color-border-light_theme);
  color: var(--color-text-light_theme);
}

.card-tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.card-footer {
  margin-top: var(--sp-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

/* Buttons */

.btn {
  appearance: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-pill);
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-family: var(--font-ui);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition:
    background 160ms ease,
    color 160ms ease,
    border-color 160ms ease,
    transform 80ms ease;
  white-space: nowrap;
}

.btn-primary-dark {
  background: var(--color-accent);
  color: var(--color-text-dark_theme);
}

.btn-primary-dark:hover {
  background: var(--color-accent-highlight);
  transform: translateY(-1px);
}

.btn-primary-light {
  background: var(--color-accent);
  color: var(--color-text-dark_theme);
}

.btn-primary-light:hover {
  background: var(--color-accent-highlight);
  transform: translateY(-1px);
}

.btn-secondary-dark {
  background: transparent;
  color: var(--color-text-dark_theme);
  border: 2px solid var(--color-border-dark_theme);
}

.btn-secondary-dark:hover {
  background: var(--color-border-dark_theme);
  color: var(--color-text-dark_theme);
  border-color: var(--color-border-dark_theme);
  transform: translateY(-1px);
}

.btn-secondary-light {
  background: transparent;
  color: var(--color-text-light_theme);
  border: 2px solid var(--color-border-light_theme);
}

.btn-secondary-light:hover {
  background: var(--color-border-light_theme);
  color: var(--color-text-dark_theme);
  border-color: var(--color-border-light_theme);
  transform: translateY(-1px);
}

/* Typography Preview */

.type-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
}

@media (max-width: 700px) {
  .type-columns {
    grid-template-columns: minmax(0, 1fr);
  }
}

.type-sample {
  padding: var(--sp-3);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border-dark_theme);
  background: var(--color-bg-elevated-dark_theme);
}

.type-sample-light {
  background: var(--color-bg-elevated-light_theme);
  border-color: var(--color-border-light_theme);
  color: var(--color-text-light_theme);
}

.type-heading-row {
  margin-bottom: var(--sp-2);
}

.type-label {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 0.2rem;
}

/* Code copy box */

.code-copy-box {
  display: inline-flex;
  align-items: flex-start;
  padding: 0.55rem 0.55rem;
  border-radius: 0.65rem;
  background: var(--color-bg-elevated-dark_theme);
  border: 1px solid var(--color-border-dark_theme);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-dark_theme);
  cursor: pointer;
  user-select: none;
  margin-top: var(--sp-1);
  max-width: 100%;
}

.code-copy-box:hover {
  border-color: var(--color-accent);
}

.code-text {
  white-space: pre;
  overflow-x: auto;
}

/* Color Showcase */

.colors-section {
  margin-top: var(--sp-5);
}

.colors-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
  grid-auto-rows: 1fr;
}

@media (max-width: 960px) {
  .colors-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .colors-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.colors-subsection {
  margin-top: var(--sp-3);
}

.colors-subsection:first-of-type {
  margin-top: 0;
}

.colors-subtitle {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted-dark_theme);
}

.color-card {
  border-radius: var(--radius-card);
  padding: var(--sp-3);
  background: var(--color-bg-elevated-dark_theme);
  border: 1px solid var(--color-border-dark_theme);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  height: 100%;
}

.color-name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.color-description {
  font-size: 0.9rem;
  color: var(--color-text-muted-dark_theme);
}

.color-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.color-swatch {
  flex: 0 0 40px;
  height: 40px;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border-dark_theme);
}

.color-meta {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.color-hex-box {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.7rem;
  border-radius: 0.65rem;
  background: var(--color-bg-dark_theme);
  border: 1px solid var(--color-border-dark_theme);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-dark_theme);
  cursor: pointer;
  user-select: none;
}

.color-hex-box:hover {
  border-color: var(--color-accent);
}

.color-hex {
  user-select: text;
}

/* Small utility */

.stack-sm {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.stack-md {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stack-lg {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Copy notification */

#copyNotice {
  position: fixed;
  bottom: 1.5rem;
  text-align: center;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  font-family: var(--font-ui);
  padding: 0.4rem 0.9rem;
  border-radius: 0.5rem;
  background: var(--color-bg-dark_theme);
  border: 1px solid var(--color-border-dark_theme);
  color: var(--color-text-dark_theme);
  font-size: 0.85rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 999;
}

#copyNotice.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(-2px);
}

/* LOGO SECTION */

.logo-section {
  margin-top: var(--sp-5);
}

.logo-showcase {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
  margin-top: var(--sp-3);
  margin-bottom: var(--sp-5);
}

@media (max-width: 800px) {
  .logo-showcase {
    grid-template-columns: minmax(0, 1fr);
  }
}

.logo-card {
  border-radius: var(--radius-card);
  padding: var(--sp-4);
  min-height: 220px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  border: 1px solid var(--color-border-dark_theme);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.logo-surface-dark {
  background: radial-gradient(
    circle at top,
    var(--color-logo-faint-dark_theme),
    var(--color-bg-dark_theme)
  );
  color: var(--color-text-dark_theme);
}

.logo-surface-accent {
  background: radial-gradient(
    circle at top,
    var(--color-accent-highlight),
    var(--color-accent)
  );
  color: var(--color-text-dark_theme);
}

.logo-surface-light {
  background: radial-gradient(
    circle at top,
    var(--color-logo-faint-light_theme),
    var(--color-bg-light_theme)
  );
  color: var(--color-text-light_theme);
}

.logo-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.logo-image {
  max-width: 180px;
  width: 100%;
  height: auto;
  opacity: 0.98;
  transition:
    transform 180ms ease,
    opacity 180ms ease;
}

.logo-card:hover .logo-image {
  transform: scale(var(--logo-zoom-scale));
  opacity: 1;
}

.logo-label {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted-dark_theme);
  text-align: center;
}

.logo-surface-light .logo-label {
  color: var(--color-text-muted-light_theme);
}

.logo-surface-accent .logo-label {
  color: var(--color-text-muted-dark_theme);
}

.logo-tag {
  position: absolute;
  top: var(--sp-2);
  left: var(--sp-2);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.45);
  color: var(--color-text-muted-dark_theme);
}

.logo-surface-light .logo-tag {
  background: rgba(0, 0, 0, 0.08);
  color: var(--color-text-light_theme);
}

/* Logo Hero Card */

.logo-hero-card {
  margin: var(--sp-4) 0;
  padding: var(--sp-4);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border-dark_theme);
  background: radial-gradient(
    circle at top,
    var(--color-logo-faint-dark_theme),
    var(--color-bg-dark_theme)
  );
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  position: relative;
  overflow: hidden;
  background-size: 140% 140%;
  background-position: 50% 0%;
  transition:
    transform 180ms ease,
    border-color 180ms ease;
}

.logo-hero-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.06) 0,
    transparent 55%
  );
  opacity: 0.6;
  pointer-events: none;
}

.logo-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
}

.logo-hero-image {
  max-width: 220px;
  width: 100%;
  opacity: 0.97;
  transition:
    transform 200ms ease,
    filter 200ms ease,
    opacity 200ms ease;
}

.logo-hero-caption {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted-dark_theme);
  text-align: center;
}

.logo-hero-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent);
}

.logo-hero-card:hover .logo-hero-image {
  transform: scale(1.07);
  filter: drop-shadow(0 0 18px var(--color-bg-dark_theme));
  opacity: 1;
}

/* Footer */

.site-footer {
  margin-top: var(--sp-5);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--color-divider-dark_theme);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--color-text-muted-dark_theme);
  text-align: center;
}