/*
  TCL Discussion Documentation - Design 2.0 (Squidfunk Standard)
*/

:root {
  /* --- Brand Identity --- */
  --md-primary-fg-color: #f43f5e;
  --md-primary-fg-color--light: #fb7185;
  --md-primary-fg-color--dark: #e11d48;
  --md-accent-fg-color: #f43f5e;

  /* --- Spacing & Radius --- */
  --radius-xl: 20px;
  --radius-lg: 12px;
  --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Theme Variables --- */

[data-md-color-scheme="default"] {
  --md-default-bg-color: #f1f5f9;
  /* Soft Slate-grey foundation */
  --md-default-fg-color: #1e293b;
  --md-default-fg-color--light: #64748b;
  --md-default-fg-color--lighter: #94a3b8;

  /* Search & Header Fixes - Eye-Safe Contrast */
  --md-header-fg-color: #1e293b;
  --md-header-bg-color: rgba(241, 245, 249, 0.98);
  --md-search-bg-color: rgba(30, 41, 59, 0.06);
  --md-search-fg-color: #1e293b;
  --md-search-result-bg-color: #ffffff;
  --md-search-result-fg-color: #1e293b;

  --glass-bg: rgba(241, 245, 249, 0.85);
  --glass-border: rgba(30, 41, 59, 0.1);
  --mesh-color: transparent;

  --shadow-premium:
    0 1px 3px rgba(15, 23, 42, 0.04),
    0 8px 16px -4px rgba(15, 23, 42, 0.04);

  /* --- Light Mode Fixes --- */
  --banner-bg: #f8fafc;
  --banner-text: #0f172a;
}

[data-md-color-scheme="slate"] {
  --md-default-bg-color: #020617;
  --md-default-fg-color: #f1f5f9;
  --md-default-fg-color--light: #94a3b8;
  --md-default-fg-color--lighter: #475569;
  --md-default-fg-color--dark: #0f172a;

  --glass-bg: rgba(15, 23, 42, 0.5);
  --glass-border: rgba(255, 255, 255, 0.08);
  --mesh-color: transparent;

  --shadow-premium:
    0 0 0 1px rgba(255, 255, 255, 0.05),
    0 20px 25px -5px rgba(0, 0, 0, 0.4),
    0 8px 10px -6px rgba(0, 0, 0, 0.4);

  --banner-bg: #0f172a;
  --banner-text: #f8fafc;
}

/* --- Background Engine 4.0 (Hyper-Premium) --- */

body {
  background-color: var(--md-default-bg-color);
  background-image:
    radial-gradient(circle at 15% 15%, rgba(244, 63, 94, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(56, 189, 248, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  background-attachment: fixed;
  background-size: cover;
}

/* Subtle Noise Overlay for Texture */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  opacity: 0.02;
  pointer-events: none;
  z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3%3Ffilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* --- Header & Navigation --- */

.md-header {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--glass-border) !important;
  transition: var(--transition-smooth);
}

/* Light Mode Header Clarity Audit - Force Specificity */
/* Standardize Header Clarity & Consistency */
/* Fix for Navigation Tab Overflow on Desktop */
.md-tabs__list {
  display: flex !important;
  flex-wrap: nowrap !important;
  overflow-x: auto !important;
  scroll-behavior: smooth !important;
  scrollbar-width: none !important;
  /* Hide scrollbar for clean UI */
}

.md-tabs__list::-webkit-scrollbar {
  display: none !important;
  /* Hide scrollbar for Chrome/Safari */
}

.md-tabs__item {
  flex-shrink: 0 !important;
}

[data-md-color-scheme="default"] .md-header__title,
[data-md-color-scheme="default"] .md-header__source,
[data-md-color-scheme="default"] .md-tabs__link,
[data-md-color-scheme="default"] .md-search__icon,
[data-md-color-scheme="default"] .md-search__share,
[data-md-color-scheme="default"] .md-header__button {
  color: #1e293b !important;
  fill: #1e293b !important;
}

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

[data-md-color-scheme="default"] .md-search__input::placeholder {
  color: rgba(30, 41, 59, 0.5) !important;
}

[data-md-color-scheme="default"] .md-tabs__link--active {
  color: var(--md-primary-fg-color) !important;
  opacity: 1 !important;
}

[data-md-color-scheme="default"] .md-logo svg {
  fill: #1e293b !important;
}

/* --- Premium Banner UI --- */

.custom-banner {
  background: var(--banner-bg);
  color: var(--banner-text);
  padding: 10px 20px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  position: relative;
  overflow: hidden;
  z-index: 1000;
}

.custom-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  animation: bannerShine 3s infinite;
}

.custom-banner a {
  color: inherit;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.custom-banner .close-btn {
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 5px;
  opacity: 0.6;
  transition: 0.2s;
  font-size: 1.2rem;
  line-height: 1;
}

.custom-banner .close-btn:hover {
  opacity: 1;
  transform: scale(1.1);
}

@keyframes bannerShine {
  from {
    transform: translateX(-100%);
  }

  to {
    transform: translateX(100%);
  }
}

/* --- Hero & Content Rhythm --- */

.hero-title {
  margin-top: 5rem !important;
  font-size: clamp(2.2rem, 8vw, 4.5rem) !important;
  font-weight: 900 !important;
  letter-spacing: -0.05em !important;
  text-align: center;
  color: var(--md-default-fg-color);
}

.hero-subtitle {
  text-align: center;
  max-width: 680px;
  margin: 1rem auto 3rem !important;
  font-size: 1.15rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.6;
  font-weight: 500;
}

.hero-action-group {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

/* --- Feature Cards 2.0 --- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.feature-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 2.2rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
  overflow: hidden;
  box-sizing: border-box;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--md-primary-fg-color--light);
}

.feature-card h3 {
  margin-top: 0 !important;
  font-weight: 800 !important;
  font-size: 1.3rem !important;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--md-default-fg-color);
}

.feature-card h3 svg {
  fill: var(--md-primary-fg-color);
}

/* --- Sidebar & Navigation Clarity Fix --- */
.md-nav__title,
.md-nav__link,
.md-sidebar__title {
  background: transparent !important;
  box-shadow: none !important;
}

.md-nav__item {
  background: transparent !important;
}

/* --- Material Overrides --- */

.md-button--primary {
  background: var(--md-primary-fg-color) !important;
  border: none !important;
  padding: 12px 32px !important;
  border-radius: 10px !important;
  font-weight: 700 !important;
  color: #fff !important;
  box-shadow: 0 4px 14px 0 rgba(244, 63, 94, 0.3) !important;
  transition: var(--transition-smooth) !important;
}

.md-button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244, 63, 94, 0.4) !important;
}

.md-button--secondary {
  border-radius: 10px !important;
  border: 1px solid var(--glass-border) !important;
  padding: 12px 32px !important;
  color: var(--md-default-fg-color) !important;
  transition: var(--transition-smooth) !important;
}

.md-button--secondary:hover {
  background: var(--glass-border) !important;
  color: var(--md-primary-fg-color) !important;
}

.md-typeset h2 {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.6rem;
  margin-top: 3rem;
}

.md-typeset .admonition {
  border-radius: 14px;
  border-left-width: 5px;
  box-shadow: var(--shadow-sm);
}

/* --- Mobile Adjustments --- */
@media screen and (max-width: 40rem) {
  .hero-title {
    font-size: 2.5rem !important;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}