/* ============================================================
   Bubbaloop — Premium Documentation Theme
   Inspired by: Pydantic, UV/Astral, Stripe, Material for MkDocs
   Palette: Deep navy + coral accent + emerald CTA
   Typography: IBM Plex Sans (body) + JetBrains Mono (code)
   ============================================================ */

/* --- Design tokens --- */
:root {
  --bb-coral: #e07a5f;
  --bb-coral-light: #f0a08a;
  --bb-coral-dark: #c4573f;
  --bb-coral-glow: rgba(224, 122, 95, 0.15);
  --bb-green: #22c55e;
  --bb-green-dark: #16a34a;
  --bb-green-glow: rgba(34, 197, 94, 0.15);
  --bb-teal: #2dd4bf;
  --bb-blue: #60a5fa;
  --bb-purple: #a78bfa;
  --bb-navy-950: #0a0e1a;
  --bb-navy-900: #0f172a;
  --bb-navy-800: #1a2332;
  --bb-navy-700: #243044;
  --bb-navy-600: #334155;
  --bb-navy-400: #94a3b8;
  --bb-navy-300: #cbd5e1;
  --bb-navy-200: #e2e8f0;
  --bb-navy-50: #f8fafc;
  --bb-radius: 12px;
  --bb-radius-sm: 8px;
  --bb-radius-xs: 6px;
  --bb-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --bb-shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --bb-shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --bb-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Light scheme --- */
[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--bb-navy-900);
  --md-primary-bg-color: #ffffff;
  --md-accent-fg-color: var(--bb-coral);
  --md-typeset-a-color: var(--bb-coral-dark);
  --md-code-bg-color: #f4f6f9;
}

/* --- Dark scheme (default, premium experience) --- */
[data-md-color-scheme="slate"] {
  --md-primary-fg-color: var(--bb-navy-800);
  --md-primary-bg-color: var(--bb-navy-800);
  --md-accent-fg-color: var(--bb-coral);
  --md-default-bg-color: var(--bb-navy-950);
  --md-typeset-a-color: var(--bb-coral);
  --md-code-bg-color: #111827;
  --md-footer-bg-color: #060a14;
  --md-footer-fg-color: var(--bb-navy-400);
}

/* --- Typography scale --- */
.md-typeset {
  font-size: 0.85rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.md-typeset h1 {
  font-weight: 800;
  font-size: 2.2rem;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.md-typeset h2 {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-top: 3em;
  padding-bottom: 0.5em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

.md-typeset h3 {
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.md-typeset p { max-width: 75ch; }

/* --- Links: smooth underline animation --- */
.md-typeset a {
  text-decoration: none;
  background-image: linear-gradient(var(--bb-coral), var(--bb-coral));
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--bb-transition);
}

.md-typeset a:hover {
  background-size: 100% 1px;
}

/* Exclude nav, buttons, and card links from underline animation */
.md-nav a,
.md-tabs a,
.md-footer a,
.md-button,
.mdx-cta-card,
.md-typeset .grid.cards a,
.md-header a,
.md-source a {
  background-image: none !important;
}

/* --- Code blocks: polished --- */
.md-typeset pre {
  border-radius: var(--bb-radius);
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: var(--bb-shadow-sm);
}

.md-typeset code {
  border-radius: var(--bb-radius-xs);
  font-size: 0.84em;
  padding: 0.15em 0.4em;
}

/* Code block header (filename labels) */
.md-typeset .highlight .filename {
  border-radius: var(--bb-radius) var(--bb-radius) 0 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* --- Grid cards: premium hover with glow --- */
.md-typeset .grid.cards > ul > li {
  border-radius: var(--bb-radius);
  border: 1px solid var(--md-default-fg-color--lightest);
  transition: all var(--bb-transition);
  position: relative;
  overflow: hidden;
}

.md-typeset .grid.cards > ul > li::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(135deg, var(--bb-coral), var(--bb-coral-light));
  opacity: 0;
  transition: opacity var(--bb-transition);
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: var(--bb-coral);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(224, 122, 95, 0.1);
  cursor: pointer;
}

.md-typeset .grid.cards > ul > li:hover::before {
  opacity: 1;
}

/* Card icon styling */
.md-typeset .grid.cards .twemoji,
.md-typeset .grid.cards .emojione {
  height: 1.8rem;
}

.md-typeset .grid.cards > ul > li > p:first-child strong {
  color: var(--md-accent-fg-color);
}

/* --- Buttons: refined --- */
.md-typeset .md-button {
  border-radius: var(--bb-radius-sm);
  font-weight: 600;
  padding: 0.65rem 1.8rem;
  font-size: 0.88rem;
  transition: all var(--bb-transition);
  letter-spacing: 0.01em;
}

.md-typeset .md-button--primary {
  background: var(--bb-green);
  border-color: var(--bb-green);
  color: #fff;
}

.md-typeset .md-button--primary:hover {
  background: var(--bb-green-dark);
  border-color: var(--bb-green-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.3);
}

.md-typeset .md-button:not(.md-button--primary):hover {
  border-color: var(--bb-coral);
  color: var(--bb-coral);
  transform: translateY(-2px);
}

/* --- Navigation: visibility + active state --- */
.md-tabs__link {
  color: var(--bb-navy-300) !important;
  opacity: 0.85;
  font-weight: 500;
}

.md-tabs__link:hover {
  color: #fff !important;
  opacity: 1;
}

.md-tabs__link--active {
  color: var(--bb-coral) !important;
  opacity: 1;
  font-weight: 600;
}

[data-md-color-scheme="default"] .md-tabs__link {
  color: var(--bb-navy-600) !important;
}

[data-md-color-scheme="default"] .md-tabs__link:hover {
  color: var(--bb-navy-900) !important;
}

[data-md-color-scheme="default"] .md-tabs__link--active {
  color: var(--bb-coral) !important;
}

.md-nav__link--active {
  color: var(--bb-coral) !important;
  font-weight: 600;
}

/* Header text visibility */
.md-header__title {
  color: var(--bb-navy-50) !important;
}

[data-md-color-scheme="default"] .md-header__title {
  color: var(--bb-navy-900) !important;
}

/* --- Admonitions: refined with left gradient --- */
.md-typeset .admonition,
.md-typeset details {
  border-radius: var(--bb-radius-sm);
  border-width: 0 0 0 4px;
  box-shadow: var(--bb-shadow-sm);
}

.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-color: var(--bb-coral);
}

.md-typeset .admonition.note,
.md-typeset details.note {
  border-color: var(--bb-teal);
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-color: #f59e0b;
}

.md-typeset .admonition.info,
.md-typeset details.info {
  border-color: var(--bb-blue);
}

.md-typeset .admonition.danger,
.md-typeset details.danger {
  border-color: #ef4444;
}

.md-typeset .admonition.example,
.md-typeset details.example {
  border-color: var(--bb-purple);
}

/* --- Tables: clean, compact, styled --- */
.md-typeset table:not([class]) {
  font-size: 0.83rem;
  border-radius: var(--bb-radius-sm);
  overflow: hidden;
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: var(--bb-shadow-sm);
}

.md-typeset table:not([class]) th {
  background: var(--md-default-fg-color--lightest);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 0.75em 1em;
}

.md-typeset table:not([class]) td {
  padding: 0.65em 1em;
}

.md-typeset table:not([class]) tr:hover td {
  background: var(--md-default-fg-color--lightest);
  transition: background var(--bb-transition);
}

/* --- Badges (pill) --- */
.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  vertical-align: middle;
  margin-left: 0.3rem;
}

.badge-agent { background: var(--bb-coral-glow); color: var(--bb-coral); }
.badge-node  { background: rgba(96, 165, 250, 0.15); color: var(--bb-blue); }
.badge-mcp   { background: rgba(45, 212, 191, 0.15); color: var(--bb-teal); }
.badge-new   { background: var(--bb-green-glow); color: var(--bb-green); }

/* --- Header: frosted glass --- */
.md-header {
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
}

[data-md-color-scheme="slate"] .md-header {
  background: rgba(10, 14, 26, 0.92);
}

[data-md-color-scheme="slate"] .md-tabs {
  background: rgba(10, 14, 26, 0.95);
}

[data-md-color-scheme="default"] .md-header {
  background: rgba(255, 255, 255, 0.92);
}

[data-md-color-scheme="default"] .md-tabs {
  background: rgba(255, 255, 255, 0.95);
}

/* --- Tabs: subtle --- */
.md-tabs {
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

/* --- Footer: clean --- */
.md-footer {
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

/* --- Scrollbar (dark) --- */
[data-md-color-scheme="slate"] ::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

[data-md-color-scheme="slate"] ::-webkit-scrollbar-track {
  background: transparent;
}

[data-md-color-scheme="slate"] ::-webkit-scrollbar-thumb {
  background: var(--bb-navy-700);
  border-radius: 3px;
}

[data-md-color-scheme="slate"] ::-webkit-scrollbar-thumb:hover {
  background: var(--bb-navy-600);
}

/* --- Smooth scroll & selection --- */
html { scroll-behavior: smooth; }
::selection { background: rgba(224, 122, 95, 0.25); }

/* --- HR --- */
.md-typeset hr {
  border-color: var(--md-default-fg-color--lightest);
  margin: 3rem 0;
}

/* --- Announcement bar --- */
.md-banner {
  background: linear-gradient(135deg, var(--bb-coral) 0%, #f4a261 100%);
  color: white;
  font-weight: 600;
  font-size: 0.82rem;
}

.md-banner a {
  color: white !important;
  text-decoration: underline;
  font-weight: 700;
}

/* --- Content tabs: refined --- */
.md-typeset .tabbed-labels > label {
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
}

.md-typeset .tabbed-labels > label--active {
  color: var(--bb-coral);
}

/* --- Search highlight color --- */
.md-search-result mark {
  background: var(--bb-coral-glow);
  color: var(--bb-coral);
}

/* --- Sidebar nav depth indicators --- */
.md-nav__item--nested > .md-nav__link {
  font-weight: 600;
}

/* ============================================================
   Homepage-specific styles
   ============================================================ */

/* Hero layout */
.md-main__inner { margin-top: 0; }

.mdx-hero {
  max-width: 68rem;
  margin: 0 auto;
  padding: 5rem 1.5rem 3rem;
  text-align: center;
}

/* Gradient headline */
.mdx-hero h1 {
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 1.2rem;
}

.mdx-hero h1 strong {
  background: linear-gradient(135deg, var(--bb-coral) 0%, #f4a261 50%, var(--bb-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Tagline */
.mdx-hero__tagline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--md-default-fg-color--light);
  max-width: 42rem;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

/* CTA buttons row */
.mdx-hero__buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.mdx-hero__buttons .md-button {
  border-radius: var(--bb-radius-sm);
  padding: 0.75rem 2.2rem;
  font-weight: 600;
  font-size: 0.92rem;
  transition: all var(--bb-transition);
}

.mdx-hero__buttons .md-button--primary {
  background: var(--bb-green);
  border-color: var(--bb-green);
  color: #fff;
}

.mdx-hero__buttons .md-button--primary:hover {
  background: var(--bb-green-dark);
  border-color: var(--bb-green-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(34, 197, 94, 0.35);
}

.mdx-hero__buttons .md-button:not(.md-button--primary):hover {
  border-color: var(--bb-coral);
  color: var(--bb-coral);
  transform: translateY(-2px);
}

/* Terminal block */
.mdx-terminal {
  max-width: 36rem;
  margin: 0 auto 4rem;
  text-align: left;
}

.mdx-terminal pre {
  border-radius: var(--bb-radius);
  border: 1px solid var(--md-default-fg-color--lightest);
  background: var(--md-code-bg-color);
  padding: 1.4rem 1.6rem;
  font-size: 0.88rem;
  line-height: 1.8;
  margin: 0;
  box-shadow: var(--bb-shadow-lg);
  position: relative;
}

/* Terminal dots */
.mdx-terminal pre::before {
  content: '';
  display: block;
  margin-bottom: 1rem;
  height: 12px;
  background:
    radial-gradient(circle at 8px 6px, #ef4444 5px, transparent 5px),
    radial-gradient(circle at 28px 6px, #f59e0b 5px, transparent 5px),
    radial-gradient(circle at 48px 6px, #22c55e 5px, transparent 5px);
}

.mdx-terminal .prompt { color: var(--bb-navy-400); }
.mdx-terminal .cmd { color: var(--md-default-fg-color); font-weight: 500; }
.mdx-terminal .str { color: var(--bb-coral); }
.mdx-terminal .cmt { color: var(--bb-navy-600); font-style: italic; }
.mdx-terminal .out { color: var(--bb-teal); font-size: 0.82em; }

/* Feature grid */
.mdx-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin: 0 auto;
  max-width: 60rem;
}

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

@media (max-width: 600px) {
  .mdx-features { grid-template-columns: 1fr; }
  .mdx-hero h1 { font-size: 1.8rem; }
  .mdx-hero__tagline { font-size: 1rem; }
}

/* Feature card */
.mdx-feature {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: var(--bb-radius);
  background: var(--md-code-bg-color);
  text-decoration: none !important;
  color: var(--md-default-fg-color) !important;
  transition: all var(--bb-transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.mdx-feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(135deg, var(--bb-coral), var(--bb-coral-light));
  opacity: 0;
  transition: opacity var(--bb-transition);
}

.mdx-feature:hover {
  border-color: var(--bb-coral);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(224, 122, 95, 0.08);
}

.mdx-feature:hover::before {
  opacity: 1;
}

.mdx-feature__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--bb-radius-sm);
  background: var(--bb-coral-glow);
  color: var(--bb-coral);
  flex-shrink: 0;
}

.mdx-feature__icon svg {
  width: 22px;
  height: 22px;
}

.mdx-feature__title {
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.3;
}

.mdx-feature__desc {
  font-size: 0.78rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.5;
}

/* Stats bar */
.mdx-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  padding: 2rem 0;
  margin: 3rem auto 0;
  max-width: 40rem;
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

.mdx-stat {
  text-align: center;
}

.mdx-stat__number {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--bb-coral);
}

.mdx-stat__label {
  font-size: 0.72rem;
  color: var(--md-default-fg-color--light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

@media (max-width: 600px) {
  .mdx-stats { gap: 1.5rem; }
  .mdx-stat__number { font-size: 1.4rem; }
}

/* Section divider */
.mdx-divider {
  text-align: center;
  margin: 4rem 0 3rem;
  position: relative;
}

.mdx-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--md-default-fg-color--lightest);
}

.mdx-divider span {
  background: var(--md-default-bg-color);
  padding: 0 1.5rem;
  position: relative;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--md-default-fg-color--light);
}