/* ── Riverse Brand Colors ── */
:root {
  --md-primary-fg-color:        #0f172a;
  --md-primary-fg-color--light: #1e293b;
  --md-primary-fg-color--dark:  #020617;
  --md-accent-fg-color:         #06b6d4;
  --md-accent-fg-color--transparent: rgba(6, 182, 212, 0.1);
  --md-typeset-a-color:         #0891b2;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color:        #22d3ee;
  --md-primary-fg-color--light: #67e8f9;
  --md-primary-fg-color--dark:  #06b6d4;
  --md-accent-fg-color:         #22d3ee;
  --md-accent-fg-color--transparent: rgba(34, 211, 238, 0.1);
  --md-default-bg-color:        #0c1222;
  --md-default-bg-color--light: #111827;
  --md-typeset-a-color:         #22d3ee;
}

/* ── Light mode page background ── */
[data-md-color-scheme="default"] {
  --md-default-bg-color: #f8fafb;
  --md-default-bg-color--light: #f1f5f9;
}

[data-md-color-scheme="default"] .md-main {
  background: linear-gradient(180deg, #f0f7fa 0%, #f8fafb 40%, #fff 100%);
}

[data-md-color-scheme="default"] .md-sidebar {
  background: transparent;
}

/* ── Hero Section ── */
.md-content .hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
  margin: -0.6rem -0.6rem 2rem;
  border-radius: 0.5rem;
  background: linear-gradient(135deg, #0f172a 0%, #164e63 50%, #0e7490 100%);
  color: #f8fafc;
}

[data-md-color-scheme="default"] .md-content .hero {
  background: linear-gradient(135deg, #ecfeff 0%, #cffafe 30%, #a5f3fc 60%, #67e8f9 100%);
  color: #0f172a;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

[data-md-color-scheme="default"] .hero h1 {
  background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-md-color-scheme="slate"] .hero h1 {
  background: linear-gradient(135deg, #f0f9ff 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .hero-subtitle {
  font-size: 1.15rem;
  opacity: 0.85;
  max-width: 640px;
  margin: 0 auto 1.5rem;
  line-height: 1.7;
}

.hero .hero-badges {
  margin-bottom: 1.5rem;
}

.hero .hero-badges img {
  margin: 0.15rem;
}

.hero .hero-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero .hero-actions a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.6rem;
  border-radius: 2rem;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.hero .hero-actions .btn-primary {
  background: #06b6d4;
  color: #fff;
}

.hero .hero-actions .btn-primary:hover {
  background: #0891b2;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
}

.hero .hero-actions .btn-secondary {
  background: rgba(255,255,255,0.15);
  color: #f0f9ff;
  border: 1px solid rgba(255,255,255,0.25);
}

[data-md-color-scheme="default"] .hero .hero-actions .btn-secondary {
  background: rgba(15,23,42,0.08);
  color: #0f172a;
  border: 1px solid rgba(15,23,42,0.2);
}

.hero .hero-actions .btn-secondary:hover {
  background: rgba(255,255,255,0.25);
  transform: translateY(-1px);
}

[data-md-color-scheme="default"] .hero .hero-actions .btn-secondary:hover {
  background: rgba(15,23,42,0.15);
}

/* ── Feature Grid ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}

.feature-card {
  padding: 0.9rem 1.1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  transition: all 0.2s ease;
  background: var(--md-default-bg-color);
}

[data-md-color-scheme="default"] .feature-card {
  background: #fff;
  border-color: #e2e8f0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.feature-card:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 2px 12px var(--md-accent-fg-color--transparent);
  transform: translateY(-1px);
}

.feature-card .feature-icon {
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
  display: block;
}

.feature-card h3 {
  margin: 0 0 0.2rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.feature-card p {
  margin: 0;
  font-size: 0.82rem;
  opacity: 0.75;
  line-height: 1.5;
}

/* ── River Algorithm Diagram ── */
.river-diagram {
  padding: 1.5rem;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, rgba(6,182,212,0.06) 0%, rgba(14,116,144,0.06) 100%);
  border: 1px solid rgba(6,182,212,0.15);
  margin: 1.5rem 0;
}

[data-md-color-scheme="slate"] .river-diagram {
  background: linear-gradient(135deg, rgba(6,182,212,0.08) 0%, rgba(14,116,144,0.08) 100%);
  border: 1px solid rgba(34,211,238,0.15);
}

/* ── Metaphor Cards ── */
.metaphor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

@media (max-width: 768px) {
  .metaphor-grid {
    grid-template-columns: 1fr;
  }
}

.metaphor-card {
  padding: 1.2rem;
  border-radius: 0.75rem;
  text-align: center;
}

.metaphor-card.flow {
  background: linear-gradient(180deg, rgba(59,130,246,0.08) 0%, rgba(59,130,246,0.02) 100%);
  border: 1px solid rgba(59,130,246,0.15);
}

[data-md-color-scheme="default"] .metaphor-card.flow {
  background: linear-gradient(180deg, rgba(59,130,246,0.12) 0%, rgba(59,130,246,0.03) 100%);
  border-color: rgba(59,130,246,0.2);
  box-shadow: 0 2px 8px rgba(59,130,246,0.06);
}

.metaphor-card.sediment {
  background: linear-gradient(180deg, rgba(245,158,11,0.08) 0%, rgba(245,158,11,0.02) 100%);
  border: 1px solid rgba(245,158,11,0.15);
}

[data-md-color-scheme="default"] .metaphor-card.sediment {
  background: linear-gradient(180deg, rgba(245,158,11,0.12) 0%, rgba(245,158,11,0.03) 100%);
  border-color: rgba(245,158,11,0.2);
  box-shadow: 0 2px 8px rgba(245,158,11,0.06);
}

.metaphor-card.purify {
  background: linear-gradient(180deg, rgba(16,185,129,0.08) 0%, rgba(16,185,129,0.02) 100%);
  border: 1px solid rgba(16,185,129,0.15);
}

[data-md-color-scheme="default"] .metaphor-card.purify {
  background: linear-gradient(180deg, rgba(16,185,129,0.12) 0%, rgba(16,185,129,0.03) 100%);
  border-color: rgba(16,185,129,0.2);
  box-shadow: 0 2px 8px rgba(16,185,129,0.06);
}

.metaphor-card .metaphor-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  display: block;
}

.metaphor-card h4 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.metaphor-card p {
  margin: 0;
  font-size: 0.85rem;
  opacity: 0.8;
  line-height: 1.6;
  text-align: left;
}

/* ── Section Separator ── */
.section-header {
  text-align: center;
  margin: 3rem 0 1.5rem;
}

.section-header h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 0.3rem;
}

[data-md-color-scheme="default"] .section-header h2 {
  background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  opacity: 0.6;
  font-size: 0.95rem;
}

/* ── Comparison Section ── */
.compare-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

@media (max-width: 768px) {
  .compare-container {
    grid-template-columns: 1fr;
  }
}

.compare-card {
  padding: 1.5rem;
  border-radius: 0.75rem;
  position: relative;
}

.compare-card.old {
  background: linear-gradient(180deg, rgba(239,68,68,0.06) 0%, rgba(239,68,68,0.02) 100%);
  border: 1px solid rgba(239,68,68,0.15);
}

[data-md-color-scheme="default"] .compare-card.old {
  background: linear-gradient(180deg, rgba(239,68,68,0.1) 0%, rgba(239,68,68,0.03) 100%);
  border-color: rgba(239,68,68,0.2);
  box-shadow: 0 2px 8px rgba(239,68,68,0.06);
}

.compare-card.new {
  background: linear-gradient(180deg, rgba(6,182,212,0.06) 0%, rgba(6,182,212,0.02) 100%);
  border: 1px solid rgba(6,182,212,0.2);
}

[data-md-color-scheme="default"] .compare-card.new {
  background: linear-gradient(180deg, rgba(6,182,212,0.1) 0%, rgba(6,182,212,0.03) 100%);
  border-color: rgba(6,182,212,0.25);
  box-shadow: 0 2px 8px rgba(6,182,212,0.06);
}

.compare-card .compare-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: 1rem;
  margin-bottom: 0.8rem;
}

.compare-card.old .compare-label {
  background: rgba(239,68,68,0.12);
  color: #ef4444;
}

.compare-card.new .compare-label {
  background: rgba(6,182,212,0.12);
  color: #06b6d4;
}

[data-md-color-scheme="slate"] .compare-card.new .compare-label {
  color: #22d3ee;
}

.compare-card h4 {
  margin: 0 0 0.8rem;
  font-size: 1.1rem;
}

.compare-card ul {
  margin: 0;
  padding-left: 1.2rem;
}

.compare-card li {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 0.3rem;
}

/* ── Scenario Example ── */
.scenario {
  margin: 2rem 0;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--md-default-fg-color--lightest);
}

.scenario-header {
  padding: 1rem 1.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  background: var(--md-default-fg-color--lightest);
}

[data-md-color-scheme="default"] .scenario-header {
  background: linear-gradient(135deg, #ecfeff 0%, #f0f9ff 100%);
  color: #0f172a;
}

.scenario-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

@media (max-width: 768px) {
  .scenario-body {
    grid-template-columns: 1fr;
  }
}

.scenario-side {
  padding: 1.2rem 1.5rem;
}

.scenario-side + .scenario-side {
  border-left: 1px solid var(--md-default-fg-color--lightest);
}

@media (max-width: 768px) {
  .scenario-side + .scenario-side {
    border-left: none;
    border-top: 1px solid var(--md-default-fg-color--lightest);
  }
}

.scenario-side .side-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
  display: block;
}

.scenario-side.rag .side-label { color: #ef4444; }
.scenario-side.river .side-label { color: #06b6d4; }
[data-md-color-scheme="slate"] .scenario-side.river .side-label { color: #22d3ee; }

.scenario-side .chat-bubble {
  padding: 0.6rem 0.9rem;
  border-radius: 0.6rem;
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.scenario-side .chat-bubble.user {
  background: var(--md-accent-fg-color--transparent);
  margin-left: 1.5rem;
}

.scenario-side .chat-bubble.ai {
  background: var(--md-default-fg-color--lightest);
  margin-right: 1.5rem;
}

/* ── Vision Section ── */
.vision-box {
  padding: 2rem;
  border-radius: 0.75rem;
  margin: 2rem 0;
  text-align: center;
  background: linear-gradient(135deg, rgba(6,182,212,0.05) 0%, rgba(99,102,241,0.05) 100%);
  border: 1px solid rgba(6,182,212,0.12);
}

[data-md-color-scheme="slate"] .vision-box {
  background: linear-gradient(135deg, rgba(6,182,212,0.08) 0%, rgba(99,102,241,0.08) 100%);
  border: 1px solid rgba(34,211,238,0.12);
}

.vision-box h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
}

.vision-box p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 0.95rem;
  line-height: 1.8;
  opacity: 0.85;
}

.vision-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 1.5rem 0 0.5rem;
  flex-wrap: wrap;
}

.vision-flow .vf-step {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
}

.vision-flow .vf-local {
  background: rgba(6,182,212,0.12);
  color: #0891b2;
  border: 1px solid rgba(6,182,212,0.2);
}

[data-md-color-scheme="slate"] .vision-flow .vf-local {
  color: #22d3ee;
}

.vision-flow .vf-cloud {
  background: rgba(139,92,246,0.1);
  color: #7c3aed;
  border: 1px solid rgba(139,92,246,0.2);
}

[data-md-color-scheme="slate"] .vision-flow .vf-cloud {
  color: #a78bfa;
}

.vision-flow .vf-arrow {
  font-size: 1.1rem;
  opacity: 0.4;
}

/* ── Smoother Admonitions ── */
.md-typeset .admonition,
.md-typeset details {
  border-radius: 0.6rem;
  border-width: 0;
  border-left: 4px solid;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

/* ── Code Blocks ── */
.md-typeset pre > code {
  border-radius: 0.5rem;
}

[data-md-color-scheme="default"] .md-typeset pre > code {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
}

/* ── Tables (light mode) ── */
[data-md-color-scheme="default"] .md-typeset table:not([class]) {
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  overflow: hidden;
}

[data-md-color-scheme="default"] .md-typeset table:not([class]) th {
  background: #f1f5f9;
  color: #0f172a;
  font-weight: 600;
}

[data-md-color-scheme="default"] .md-typeset table:not([class]) tr:nth-child(even) td {
  background: #f8fafc;
}

/* ── Sidebar (light mode) ── */
[data-md-color-scheme="default"] .md-nav__link--active {
  color: #0891b2;
  font-weight: 600;
}

[data-md-color-scheme="default"] .md-nav__item--active > .md-nav__link {
  color: #0891b2;
}

/* ── Content headings accent (light mode) ── */
[data-md-color-scheme="default"] .md-typeset h2 {
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 0.3rem;
}

[data-md-color-scheme="default"] .md-typeset h1 {
  color: #0f172a;
}

/* ── Admonitions (light mode) ── */
[data-md-color-scheme="default"] .md-typeset .admonition,
[data-md-color-scheme="default"] .md-typeset details {
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  background: #fff;
}

/* ── Custom Header ── */

/* hide Material default tabs */
.md-tabs { display: none; }

/* override Material's default .md-header styles — we add .md-header class
   to .site-header so Material's search CSS selectors work
   ([data-md-toggle=search]:checked ~ .md-header .md-search__*) */
.site-header.md-header {
  position: sticky;
  top: 0;
  z-index: 4;
  height: 3rem;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  transition: background 0.2s;
  box-shadow: none;
  color: inherit;
  background-color: transparent;
}

[data-md-color-scheme="slate"] .site-header.md-header {
  background: #0f172a;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25);
}

[data-md-color-scheme="default"] .site-header.md-header {
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 61rem;
  margin: 0 auto;
  padding: 0 1rem;
  gap: 1.5rem;
}

/* brand */
.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-header__logo {
  height: 1.35rem;
  width: auto;
}

.site-header__name {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

[data-md-color-scheme="slate"] .site-header__name { color: #f1f5f9; }
[data-md-color-scheme="default"] .site-header__name { color: #0f172a; }

/* nav links */
.site-header__nav {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  margin-left: auto;
}

.site-header__nav-link {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: 0.35rem;
  text-decoration: none;
  transition: all 0.15s;
  white-space: nowrap;
}

[data-md-color-scheme="slate"] .site-header__nav-link {
  color: rgba(241,245,249,0.5);
}
[data-md-color-scheme="slate"] .site-header__nav-link:hover {
  color: #f1f5f9;
}
[data-md-color-scheme="slate"] .site-header__nav-link--active {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

[data-md-color-scheme="default"] .site-header__nav-link {
  color: #64748b;
}
[data-md-color-scheme="default"] .site-header__nav-link:hover {
  color: #0f172a;
}
[data-md-color-scheme="default"] .site-header__nav-link--active {
  color: #0f172a;
  background: #f1f5f9;
}

/* right actions */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
}

/* icon buttons */
.site-header__icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.35rem;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
  padding: 0;
}

.site-header__icon-btn svg {
  width: 1.15rem;
  height: 1.15rem;
}

[data-md-color-scheme="slate"] .site-header__icon-btn {
  color: rgba(241,245,249,0.5);
  fill: currentColor;
}
[data-md-color-scheme="slate"] .site-header__icon-btn svg { fill: currentColor; }
[data-md-color-scheme="slate"] .site-header__icon-btn:hover {
  color: #f1f5f9;
  background: rgba(255,255,255,0.06);
}

[data-md-color-scheme="default"] .site-header__icon-btn {
  color: #64748b;
  fill: currentColor;
}
[data-md-color-scheme="default"] .site-header__icon-btn svg { fill: currentColor; }
[data-md-color-scheme="default"] .site-header__icon-btn:hover {
  color: #0f172a;
  background: #f1f5f9;
}

/* palette toggle (Material inserts form.md-header__option) */
.site-header .md-header__option {
  display: flex;
  align-items: center;
}

.site-header .md-header__option .md-header__button {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.35rem;
  transition: all 0.15s;
}

[data-md-color-scheme="slate"] .site-header .md-header__option .md-header__button {
  color: rgba(241,245,249,0.5);
}
[data-md-color-scheme="slate"] .site-header .md-header__option .md-header__button:hover {
  color: #f1f5f9;
  background: rgba(255,255,255,0.06);
}

[data-md-color-scheme="default"] .site-header .md-header__option .md-header__button {
  color: #64748b;
}
[data-md-color-scheme="default"] .site-header .md-header__option .md-header__button:hover {
  color: #0f172a;
  background: #f1f5f9;
}

/* language dropdown positioning */
.site-header__lang {
  position: relative;
}

/* mobile hamburger */
.site-header__mobile-toggle {
  display: none;
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
}

[data-md-color-scheme="slate"] .site-header__mobile-toggle { color: #f1f5f9; }
[data-md-color-scheme="default"] .site-header__mobile-toggle { color: #0f172a; }

@media (max-width: 76.25em) {
  .site-header__nav { display: none; }
  .site-header__mobile-toggle { display: flex; }
  .site-header__brand { margin-left: 2rem; }
}

@media (max-width: 600px) {
  .site-header__name { display: none; }
}

/* search icon in header (light mode) */
[data-md-color-scheme="default"] .site-header label[for="__search"] {
  color: #64748b;
  fill: currentColor;
}
[data-md-color-scheme="default"] .site-header label[for="__search"] svg {
  fill: currentColor;
}

/* search bar light mode */
[data-md-color-scheme="default"] .md-search__input {
  background: #f1f5f9;
  color: #0f172a;
}

[data-md-color-scheme="default"] .md-search__input::placeholder {
  color: #94a3b8;
}

[data-md-color-scheme="default"] .md-search__output {
  background: #fff;
}

[data-md-color-scheme="default"] .md-search-result__meta {
  color: #64748b;
  background: #f8fafc;
}

/* ── Language Switcher ── */
.md-select__inner {
  border-radius: 0.5rem;
  overflow: hidden;
  min-width: 8rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  border: 1px solid rgba(0,0,0,0.06);
  margin-top: 0.3rem;
}

[data-md-color-scheme="slate"] .md-select__inner {
  background: #1e293b;
  border-color: rgba(255,255,255,0.08);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

[data-md-color-scheme="default"] .md-select__inner {
  background: #fff;
}

.md-select__list {
  padding: 0.3rem 0;
  margin: 0;
}

.md-select__link {
  display: block;
  padding: 0.45rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 0;
  transition: background 0.15s, color 0.15s;
}

[data-md-color-scheme="slate"] .md-select__link {
  color: #94a3b8;
}

[data-md-color-scheme="slate"] .md-select__link:hover,
[data-md-color-scheme="slate"] .md-select__link:focus {
  background: rgba(34,211,238,0.08);
  color: #22d3ee;
}

[data-md-color-scheme="default"] .md-select__link {
  color: #475569;
}

[data-md-color-scheme="default"] .md-select__link:hover,
[data-md-color-scheme="default"] .md-select__link:focus {
  background: #f1f5f9;
  color: #0f172a;
}

/* ── Sidebar Navigation (dark mode) ── */
[data-md-color-scheme="slate"] .md-nav__link--active {
  color: #22d3ee;
}

[data-md-color-scheme="slate"] .md-nav__link {
  color: #94a3b8;
}

[data-md-color-scheme="slate"] .md-nav__link:hover {
  color: #e2e8f0;
}

[data-md-color-scheme="slate"] .md-nav__item--active > .md-nav__link {
  color: #22d3ee;
}

/* ── Admonition text in dark mode ── */
[data-md-color-scheme="slate"] .md-typeset .admonition,
[data-md-color-scheme="slate"] .md-typeset details {
  color: #cbd5e1;
}

[data-md-color-scheme="slate"] .md-typeset .admonition a,
[data-md-color-scheme="slate"] .md-typeset details a {
  color: #22d3ee;
}

/* ── General link colors in dark mode ── */
[data-md-color-scheme="slate"] .md-typeset a {
  color: #22d3ee;
}

[data-md-color-scheme="slate"] .md-typeset a:hover {
  color: #67e8f9;
}

/* ── Footer ── */

/* dark mode */
[data-md-color-scheme="slate"] .md-footer {
  background: #0b1120;
  border-top: none;
  color: #94a3b8;
}

[data-md-color-scheme="slate"] .md-footer a {
  color: #cbd5e1;
}

[data-md-color-scheme="slate"] .md-footer__link {
  color: #94a3b8;
}

[data-md-color-scheme="slate"] .md-footer__title {
  color: #e2e8f0;
}

/* light mode */
[data-md-color-scheme="default"] .md-footer {
  background: #f1f5f9;
  border-top: 1px solid #e2e8f0;
  color: #475569;
}

[data-md-color-scheme="default"] .md-footer a {
  color: #334155;
}

[data-md-color-scheme="default"] .md-footer__link {
  color: #475569;
}

[data-md-color-scheme="default"] .md-footer__title {
  color: #1e293b;
}

/* footer meta */
.md-footer-meta {
  background: transparent;
  padding: 0;
}

.md-footer-meta__inner {
  padding: 0.4rem 0;
}

.md-copyright {
  display: none;
}

.md-social {
  margin: 0;
  padding: 0.3rem 0;
  display: flex;
  justify-content: center;
  width: 100%;
  gap: 1rem;
}

.md-social__link {
  transition: opacity 0.15s;
}

[data-md-color-scheme="slate"] .md-social__link {
  color: #94a3b8;
}

[data-md-color-scheme="default"] .md-social__link {
  color: #0f172a !important;
}

[data-md-color-scheme="slate"] .md-social__link svg,
[data-md-color-scheme="default"] .md-social__link svg {
  fill: currentColor;
}

.md-social__link:hover {
  color: #06b6d4 !important;
}

.md-social__link svg {
  width: 1.1rem;
  height: 1.1rem;
}

/* slim down prev/next nav */
.md-footer__link {
  padding: 0;
}

.md-footer__title {
  font-size: 0.82rem;
}

.md-footer__direction {
  font-size: 0.6rem;
  opacity: 0.5;
}

/* copyright text */
[data-md-color-scheme="slate"] .md-copyright {
  color: #64748b;
}

[data-md-color-scheme="default"] .md-copyright {
  color: #64748b;
}

/* ══════════════════════════════════════
   Responsive
   ══════════════════════════════════════ */

/* tablet */
@media (max-width: 960px) {
  .hero h1 {
    font-size: 2rem;
  }
  .hero .hero-subtitle {
    font-size: 1rem;
  }
  .hero .hero-actions a {
    padding: 0.55rem 1.2rem;
    font-size: 0.82rem;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }
  .section-header {
    margin: 2rem 0 1rem;
  }
  .section-header h2 {
    font-size: 1.4rem;
  }
  .vision-box {
    padding: 1.5rem;
  }
  .vision-flow {
    flex-direction: column;
    gap: 0.3rem;
  }
  .vision-flow .vf-arrow {
    transform: rotate(90deg);
  }
}

/* mobile */
@media (max-width: 600px) {
  .md-content .hero {
    padding: 2rem 0.8rem 1.5rem;
    margin: -0.6rem -0.6rem 1.5rem;
  }
  .hero h1 {
    font-size: 1.6rem;
  }
  .hero .hero-subtitle {
    font-size: 0.88rem;
    line-height: 1.6;
  }
  .hero .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero .hero-actions a {
    width: 100%;
    max-width: 14rem;
    justify-content: center;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .compare-card {
    padding: 1rem;
  }
  .compare-card li {
    font-size: 0.82rem;
  }
  .section-header h2 {
    font-size: 1.2rem;
  }
  .metaphor-card {
    padding: 0.9rem;
  }
  .scenario-side {
    padding: 0.8rem 1rem;
  }
  .vision-box {
    padding: 1.2rem;
  }
  .vision-box h3 {
    font-size: 1.1rem;
  }
  .vision-box p {
    font-size: 0.85rem;
  }
  .vision-flow .vf-step {
    font-size: 0.72rem;
    padding: 0.35rem 0.7rem;
  }
  /* table horizontal scroll */
  .md-typeset table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}