/* Identity OS — Silver/White premium theme
   Matches logo: clean white bg, silver chrome orbital rings */

/* ============================================================
   COLOR SYSTEM
   ============================================================ */

:root {
  --ios-white: #ffffff;
  --ios-off-white: #fafbfc;
  --ios-silver: #6b7280;
  --ios-silver-light: #9ca3af;
  --ios-chrome: #4b5563;
  --ios-dark: #1f2937;
  --ios-accent: #6b7280;
  --ios-accent-hover: #4b5563;
  --ios-border: rgba(107, 114, 128, 0.12);
  --ios-border-hover: rgba(107, 114, 128, 0.25);

  /* Dark mode palette */
  --ios-navy: #0d0d1a;
  --ios-navy-light: #141428;
  --ios-navy-mid: #1a1a2e;
  --ios-dm-silver: #b8b8cc;
  --ios-dm-accent: #6c63ff;
  --ios-dm-border: rgba(180, 180, 210, 0.08);
}

/* ============================================================
   LIGHT MODE (DEFAULT — silver/white premium)
   ============================================================ */

[data-md-color-scheme="default"] {
  --md-primary-fg-color: #ffffff;
  --md-primary-fg-color--light: #f9fafb;
  --md-primary-fg-color--dark: #e5e7eb;
  --md-primary-bg-color: #1f2937;
  --md-accent-fg-color: #4b5563;
  --md-default-bg-color: #ffffff;
  --md-typeset-a-color: #4b5563;
}

[data-md-color-scheme="default"] .md-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--ios-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

[data-md-color-scheme="default"] .md-header .md-header__title {
  color: var(--ios-dark);
}

[data-md-color-scheme="default"] .md-tabs {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--ios-border);
}

[data-md-color-scheme="default"] .md-tabs__link {
  color: var(--ios-silver);
}

[data-md-color-scheme="default"] .md-tabs__link--active {
  color: var(--ios-dark) !important;
  font-weight: 600;
}

[data-md-color-scheme="default"] .md-nav__link--active {
  color: var(--ios-dark) !important;
  font-weight: 600;
}

[data-md-color-scheme="default"] .md-typeset a {
  color: var(--ios-chrome);
  text-decoration: none;
  border-bottom: 1px solid var(--ios-border);
  transition: all 0.2s;
}

[data-md-color-scheme="default"] .md-typeset a:hover {
  color: var(--ios-dark);
  border-bottom-color: var(--ios-dark);
}

[data-md-color-scheme="default"] .md-typeset .md-nav a {
  border-bottom: none;
}

/* ============================================================
   DARK MODE — deep navy (default, matches landing page)
   ============================================================ */

[data-md-color-scheme="slate"] {
  --md-default-bg-color: #0a0a0f;
  --md-default-fg-color: #e0e0ec;
  --md-primary-fg-color: #0d0d14;
  --md-primary-bg-color: #e0e0ec;
  --md-accent-fg-color: #8b83ff;
  --md-typeset-a-color: #8b83ff;
  --md-code-bg-color: #12121e;
  --md-footer-bg-color: #060609;
  --md-typeset-color: #c8c8d8;
  --md-default-fg-color--light: #9898b0;
  --md-default-fg-color--lighter: #6868880;
  --md-default-fg-color--lightest: #3a3a50;
}

[data-md-color-scheme="slate"] .md-header {
  background: rgba(10, 10, 15, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(140, 140, 180, 0.08);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.3);
}

[data-md-color-scheme="slate"] .md-header .md-header__title {
  color: #e0e0ec;
  font-weight: 600;
}

[data-md-color-scheme="slate"] .md-tabs {
  background: rgba(10, 10, 15, 0.95);
  border-bottom: 1px solid rgba(140, 140, 180, 0.06);
}

[data-md-color-scheme="slate"] .md-tabs__link {
  color: #7878a0;
  transition: color 0.2s;
}

[data-md-color-scheme="slate"] .md-tabs__link--active,
[data-md-color-scheme="slate"] .md-tabs__link:hover {
  color: #e0e0ec !important;
}

/* Sidebar */
[data-md-color-scheme="slate"] .md-sidebar {
  background: #0a0a0f;
}

[data-md-color-scheme="slate"] .md-nav__link {
  color: #9898b0;
  transition: color 0.15s;
}

[data-md-color-scheme="slate"] .md-nav__link:hover {
  color: #e0e0ec;
}

[data-md-color-scheme="slate"] .md-nav__link--active {
  color: #8b83ff !important;
  font-weight: 600;
}

[data-md-color-scheme="slate"] .md-nav__item--nested > .md-nav__link {
  color: #b0b0c8;
}

/* Content area subtle glow */
[data-md-color-scheme="slate"] .md-content {
  background: #0a0a0f;
}

[data-md-color-scheme="slate"] .md-typeset {
  color: #c8c8d8;
}

[data-md-color-scheme="slate"] .md-typeset a {
  color: #8b83ff;
  text-decoration: none;
  border-bottom: 1px solid rgba(139, 131, 255, 0.2);
  transition: all 0.2s;
}

[data-md-color-scheme="slate"] .md-typeset a:hover {
  color: #a89fff;
  border-bottom-color: #a89fff;
}

[data-md-color-scheme="slate"] .md-typeset .md-nav a {
  border-bottom: none;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */

.md-typeset h1 {
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ios-dark);
}

[data-md-color-scheme="slate"] .md-typeset h1 {
  color: #f0f0f8;
  background: linear-gradient(135deg, #ffffff, #b8b8d0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-md-color-scheme="slate"] .md-typeset h2 {
  color: #e0e0ec;
}

[data-md-color-scheme="slate"] .md-typeset h3 {
  color: #d0d0e0;
}

.md-typeset h2 {
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-top: 2.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--ios-border);
}

[data-md-color-scheme="slate"] .md-typeset h2 {
  border-bottom-color: var(--ios-dm-border);
}

.md-typeset h3 {
  font-weight: 600;
}

/* ============================================================
   CODE BLOCKS
   ============================================================ */

.md-typeset pre {
  border-radius: 10px;
  border: 1px solid var(--ios-border);
}

[data-md-color-scheme="default"] .md-typeset pre {
  background: #f8f9fa !important;
}

[data-md-color-scheme="slate"] .md-typeset pre {
  background: #0e0e1a !important;
  border: 1px solid rgba(139, 131, 255, 0.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(139, 131, 255, 0.05);
}

.md-typeset code {
  border-radius: 4px;
  font-size: 0.82em;
}

[data-md-color-scheme="default"] .md-typeset :not(pre) > code {
  background: #f3f4f6;
  color: var(--ios-chrome);
  border: 1px solid var(--ios-border);
}

[data-md-color-scheme="slate"] .md-typeset :not(pre) > code {
  background: rgba(108, 99, 255, 0.1);
  color: var(--ios-dm-silver);
  border: 1px solid rgba(108, 99, 255, 0.15);
}

/* ============================================================
   HERO CARDS — clean glass
   ============================================================ */

.md-typeset .hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}

.md-typeset .hero-card {
  background: var(--ios-off-white);
  border: 1px solid var(--ios-border);
  border-radius: 14px;
  padding: 1.8rem 1.2rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.md-typeset .hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ios-silver-light), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.md-typeset .hero-card:hover {
  transform: translateY(-3px);
  border-color: var(--ios-border-hover);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.md-typeset .hero-card:hover::before {
  opacity: 1;
}

[data-md-color-scheme="slate"] .md-typeset .hero-card {
  background: linear-gradient(145deg, #12121e, #0e0e18);
  border: 1px solid rgba(139, 131, 255, 0.08);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

[data-md-color-scheme="slate"] .md-typeset .hero-card:hover {
  border-color: rgba(139, 131, 255, 0.25);
  box-shadow: 0 12px 40px rgba(139, 131, 255, 0.1);
  transform: translateY(-4px);
}

.md-typeset .hero-card .number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--ios-dark);
  display: block;
  margin-bottom: 0.4rem;
  line-height: 1.1;
}

[data-md-color-scheme="slate"] .md-typeset .hero-card .number {
  background: linear-gradient(135deg, var(--ios-dm-accent), var(--ios-dm-silver));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.md-typeset .hero-card .label {
  font-size: 0.78rem;
  color: var(--ios-silver);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* ============================================================
   TABLES
   ============================================================ */

.md-typeset table:not([class]) {
  border: 1px solid var(--ios-border);
  border-radius: 8px;
  overflow: hidden;
}

.md-typeset table:not([class]) th {
  background: var(--ios-off-white);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--ios-silver);
  border-bottom: 1px solid var(--ios-border);
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) {
  border-color: rgba(139, 131, 255, 0.1);
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) th {
  background: rgba(139, 131, 255, 0.08);
  color: #b0b0c8;
  border-color: rgba(139, 131, 255, 0.1);
  font-weight: 600;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) tr:hover td {
  background: rgba(139, 131, 255, 0.04);
}

.md-typeset table:not([class]) td {
  border-bottom: 1px solid var(--ios-border);
}

.md-typeset table:not([class]) tr:hover td {
  background: rgba(107, 114, 128, 0.03);
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) td {
  border-color: var(--ios-dm-border);
}

/* ============================================================
   ADMONITIONS
   ============================================================ */

.md-typeset .admonition {
  border-radius: 10px;
  border-left-width: 3px;
}

[data-md-color-scheme="slate"] .md-typeset .admonition {
  background: rgba(20, 20, 40, 0.5);
}

/* ============================================================
   FOOTER
   ============================================================ */

[data-md-color-scheme="default"] .md-footer {
  background: #1f2937;
}

[data-md-color-scheme="default"] .md-footer-meta {
  background: #111827;
}

[data-md-color-scheme="slate"] .md-footer {
  background: #0a0a14;
  border-top: 1px solid var(--ios-dm-border);
}

[data-md-color-scheme="slate"] .md-footer-meta {
  background: #080810;
}

.md-social__link svg {
  transition: fill 0.2s;
}

.md-social__link:hover svg {
  fill: var(--ios-accent-hover) !important;
}

[data-md-color-scheme="slate"] .md-social__link:hover svg {
  fill: var(--ios-dm-accent) !important;
}

/* ============================================================
   SEARCH
   ============================================================ */

[data-md-color-scheme="default"] .md-search__form {
  background: var(--ios-off-white);
  border: 1px solid var(--ios-border);
  border-radius: 8px;
}

[data-md-color-scheme="slate"] .md-search__form {
  background: rgba(20, 20, 40, 0.6);
  border: 1px solid var(--ios-dm-border);
  border-radius: 8px;
}

/* ============================================================
   LOGO sizing
   ============================================================ */

.md-header__button.md-logo img {
  height: 28px;
  width: auto;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(107, 114, 128, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(107, 114, 128, 0.4);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
  .md-typeset .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
  }
  .md-typeset .hero-card .number {
    font-size: 1.8rem;
  }
}