@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:ital,wght@0,400;0,500;0,600;0,700;0,800;0,900;1,600&family=IBM+Plex+Mono:ital,wght@0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

/* ==========================================================================
   ANUMAN DESIGN SYSTEM — HERITAGE EDITORIAL & SCHOLARLY DARK ACADEMIA
   Sanskrit Epistemology (anumāna) meets Cross-Industry Engineering
   ========================================================================== */

:root {
  /* 1. Dominant & Neutral Tones (Foundations — Warm Uncoated Parchment) */
  --bg-primary: #F9F6F0;           /* Parchment White: Primary editorial background */
  --bg-surface: #F2EEE3;           /* Alabaster Cream: Cards, containers, headers */
  --bg-surface-elevated: #EBE4D5;  /* Soft Sandstone: Hover states, active tabs */
  --bg-surface-hover: #E3DDD0;
  --bg-card: #F2EEE3;              /* Card Fill */
  --bg-color: var(--bg-primary);

  /* Primary Text & Deep Contrast */
  --text-main: #1C1A17;            /* Ink Obsidian: Supreme legibility without harshness */
  --text-muted: #4A453F;           /* Muted Charcoal: Descriptions, metadata */
  --text-subtle: #7D756C;          /* Weathered Stone: Micro-copy, timestamps */

  /* 2. Accent & Brand Tones (The Heritage Core) */
  --accent-crimson: #8B263E;       /* Saffron Crimson: Primary Brand Accent & CTAs */
  --accent-rust: #A84434;          /* Terracotta Rust: Secondary Accent, masonry warmth */
  --accent-gold: #C29B38;          /* Antique Gold: Scholarly craft, badges, highlights */
  --accent-amber: #D97706;         /* Warning / Caution */

  /* Aliases for functional compatibility */
  --accent-1: var(--accent-crimson);
  --accent-2: var(--accent-rust);
  --accent-3: var(--accent-gold);

  /* Gradients */
  --accent-gradient: linear-gradient(135deg, #8B263E 0%, #A84434 100%);
  --accent-gradient-hover: linear-gradient(135deg, #781E33 0%, #943A2C 100%);
  --accent-gradient-gold: linear-gradient(135deg, #C29B38 0%, #A84434 100%);

  /* Borders & Rules */
  --border-subtle: #E3DCD0;        /* Fine Masonry / Micro-border */
  --border-color: #E3DCD0;
  --border-highlight: rgba(139, 38, 62, 0.28);

  /* Typography */
  --font-heading: 'Barlow Condensed', sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Consolas, monospace;

  /* Tactile Editorial Shadows */
  --shadow-sm: 0 2px 4px rgba(28, 26, 23, 0.04);
  --shadow-md: 0 8px 24px -4px rgba(28, 26, 23, 0.08), 0 4px 8px -2px rgba(28, 26, 23, 0.04);
  --shadow-glow: 0 12px 32px -4px rgba(139, 38, 62, 0.16);
  --shadow-tactile: 3px 3px 0 var(--border-subtle);
  --shadow-tactile-accent: 4px 4px 0 var(--accent-crimson);

  --transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   DARK MODE ADAPTATION — SCHOLARLY STUDY / WOOD-PANELED LIBRARY NIGHT
   ========================================================================== */
[data-theme="dark"] {
  --bg-primary: #141210;           /* Deep Espresso: Scholarly night background */
  --bg-surface: #201D1A;           /* Warm Charcoal Wood: Surface containers */
  --bg-surface-elevated: #2A2622;  /* Aged Library Oak: Hover cards, active states */
  --bg-surface-hover: #332E2A;
  --bg-card: #201D1A;
  --bg-color: var(--bg-primary);

  --text-main: #F4F0EA;            /* Soft Warm Ivory: High-contrast primary text */
  --text-muted: #A8A196;           /* Warm Dust Parchment: Body text */
  --text-subtle: #6E665C;          /* Aged Bookbinder: Micro-copy */

  --accent-crimson: #A83852;       /* Luminous Crimson for dark-mode contrast */
  --accent-rust: #B85342;          /* Luminous Terracotta */
  --accent-gold: #D4AF37;          /* Scholarly Antique Gold */
  --accent-amber: #F59E0B;

  --accent-1: var(--accent-crimson);
  --accent-2: var(--accent-rust);
  --accent-3: var(--accent-gold);

  --accent-gradient: linear-gradient(135deg, #A83852 0%, #B85342 100%);
  --accent-gradient-hover: linear-gradient(135deg, #BD435D 0%, #C9604E 100%);
  --accent-gradient-gold: linear-gradient(135deg, #D4AF37 0%, #B85342 100%);

  --border-subtle: rgba(244, 240, 234, 0.09);
  --border-color: rgba(244, 240, 234, 0.09);
  --border-highlight: rgba(168, 56, 82, 0.38);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 10px 28px -5px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 35px -5px rgba(168, 56, 82, 0.28);
  --shadow-tactile: 3px 3px 0 rgba(244, 240, 234, 0.1);
  --shadow-tactile-accent: 4px 4px 0 var(--accent-crimson);
}

/* ==========================================================================
   BASE & RESET
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

:focus-visible {
  outline: 2px solid var(--accent-crimson);
  outline-offset: 3px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
}

::selection {
  background: var(--accent-crimson);
  color: #FFFFFF;
}

/* Atmospheric Background Lighting */
.bg-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background: 
    radial-gradient(circle at 15% 15%, rgba(139, 38, 62, 0.035), transparent 45%),
    radial-gradient(circle at 85% 35%, rgba(168, 68, 52, 0.035), transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(194, 155, 56, 0.025), transparent 40%);
}

[data-theme="dark"] .bg-glow {
  background: 
    radial-gradient(circle at 15% 15%, rgba(168, 56, 82, 0.07), transparent 45%),
    radial-gradient(circle at 85% 35%, rgba(184, 83, 66, 0.06), transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(212, 175, 55, 0.04), transparent 40%);
}

/* Architectural Drafting Grid */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
  background-size: 52px 52px;
  background-image: 
    linear-gradient(to right, rgba(28, 26, 23, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 26, 23, 0.035) 1px, transparent 1px);
}

[data-theme="dark"] .bg-grid {
  background-image: 
    linear-gradient(to right, rgba(244, 240, 234, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(244, 240, 234, 0.025) 1px, transparent 1px);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.12;
  color: var(--text-main);
  letter-spacing: 0.015em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2.85rem, 6.5vw, 5.25rem);
  letter-spacing: 0.01em;
  font-weight: 800;
  line-height: 1.04;
}

h2 {
  font-size: clamp(2.25rem, 4.5vw, 3.6rem);
  letter-spacing: 0.01em;
  margin-bottom: 1.25rem;
  line-height: 1.08;
}

h3 {
  font-size: 1.55rem;
  letter-spacing: 0.015em;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

h4 {
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  font-weight: 400;
  text-transform: none;
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.text-crimson {
  color: var(--accent-crimson) !important;
}

.text-rust {
  color: var(--accent-rust) !important;
}

.text-gold {
  color: var(--accent-gold) !important;
}

.text-emerald {
  color: var(--accent-gold) !important; /* Mapped to antique craft gold */
}

/* ==========================================================================
   BRAND BADGES & TELEMETRY (IBM Plex Mono)
   ========================================================================== */
.parent-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.95rem;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid rgba(194, 155, 56, 0.35);
  background: rgba(194, 155, 56, 0.09);
  color: #8A6414;
  margin-bottom: 1.5rem;
}

[data-theme="dark"] .parent-badge {
  background: rgba(212, 175, 55, 0.12);
  border-color: rgba(212, 175, 55, 0.35);
  color: #F0CE6B;
}

.parent-badge i {
  color: var(--accent-gold);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.badge-accent {
  border-color: rgba(139, 38, 62, 0.28);
  background: rgba(139, 38, 62, 0.08);
  color: var(--accent-crimson);
}

.badge-emerald, .badge-gold {
  border-color: rgba(194, 155, 56, 0.35);
  background: rgba(194, 155, 56, 0.09);
  color: var(--accent-gold);
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */
.container {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.5rem auto;
}

.section-header p {
  font-size: 1.15rem;
  margin-top: 0.75rem;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: var(--transition);
}

nav.scrolled {
  background: rgba(249, 246, 240, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 0;
  box-shadow: 0 4px 20px -4px rgba(28, 26, 23, 0.06);
}

[data-theme="dark"] nav.scrolled {
  background: rgba(20, 18, 16, 0.94);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 8px 30px -10px rgba(0, 0, 0, 0.7);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-main);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-symbol {
  width: 28px;
  height: 28px;
  background: var(--accent-gradient);
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.85rem;
  font-weight: 900;
}

.logo-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-subtle);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-left: 1px solid var(--border-subtle);
  padding-left: 0.6rem;
  margin-left: 0.2rem;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links {
  display: flex;
  gap: 1.6rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.925rem;
  transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent-crimson);
}

/* Theme Toggle Button (Tactile Editorial Switcher) */
.theme-toggle-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.15rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.theme-toggle-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-crimson);
  color: var(--accent-crimson);
  transform: translateY(-1px);
}

/* ==========================================================================
   BUTTONS (Barlow Condensed Assertive & Tactile gtm.garden Physics)
   ========================================================================== */
.btn-primary {
  background: var(--accent-gradient);
  color: #FFFFFF;
  padding: 0.8rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-heading);
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px -2px rgba(139, 38, 62, 0.35);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -4px rgba(139, 38, 62, 0.45);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  padding: 0.8rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-heading);
  transition: var(--transition);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-rust);
  color: var(--accent-crimson);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--accent-crimson);
  border: 1px solid var(--accent-crimson);
  padding: 0.6rem 1.25rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-heading);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-outline:hover {
  background: rgba(139, 38, 62, 0.08);
  border-color: var(--accent-crimson);
}

.cta-group {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   CARDS & CONTAINERS (Alabaster Cream / Espresso Architecture)
   ========================================================================== */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 2.25rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--border-highlight), transparent);
  opacity: 0;
  transition: var(--transition);
}

.glass-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-highlight);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.glass-card:hover::before {
  opacity: 1;
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding-top: 7rem;
  padding-bottom: 4rem;
}

.hero-content {
  max-width: 960px;
}

.hero p {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  margin: 1.5rem 0 2.25rem 0;
  max-width: 820px;
}

/* ==========================================================================
   EDITORIAL 3-COLUMN METRIC STRIP (gtm.garden pattern)
   ========================================================================== */
.metric-strip {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  margin: 2rem 0;
}

.metric-strip-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.metric-cell {
  padding: 2rem 2rem 2rem 0;
  border-right: 1px solid var(--border-subtle);
  margin-right: 2rem;
}

.metric-cell:last-child {
  border-right: none;
  margin-right: 0;
}

.metric-cell h3 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-crimson);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.metric-cell p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* ==========================================================================
   CORE THESIS SECTION
   ========================================================================== */
.thesis-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 5rem 0;
}

.thesis-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: center;
}

.thesis-callout {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  line-height: 1.12;
  font-weight: 800;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.thesis-text p {
  margin-bottom: 1.25rem;
}

/* ==========================================================================
   STRATEGIC DIMENSIONS CARDS
   ========================================================================== */
.dimension-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 2rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  box-shadow: var(--shadow-sm);
}

.dimension-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-crimson);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.dimension-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-crimson);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.dimension-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   VENTURE STUDIO 5-STAGE LIFECYCLE TRACK
   ========================================================================== */
.studio-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
  margin: 3.5rem 0;
  position: relative;
}

.stage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 1.75rem 1.25rem;
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow-sm);
}

.stage-card:hover {
  border-color: var(--accent-crimson);
  background: var(--bg-surface-elevated);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.stage-step {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(139, 38, 62, 0.08);
  border: 1px solid rgba(139, 38, 62, 0.25);
  color: var(--accent-crimson);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.stage-card h4 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.stage-card p {
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ==========================================================================
   OPERATING PRINCIPLES
   ========================================================================== */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.principle-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 2.25rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.principle-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-highlight);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.principle-number {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-rust);
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   INSIGHTS & JOURNAL CARDS
   ========================================================================== */
.journal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 2.25rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.journal-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-crimson);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.series-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-crimson);
  margin-bottom: 0.75rem;
  display: inline-block;
}

.read-time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-subtle);
  margin-top: 1rem;
}

/* ==========================================================================
   DUAL-PATH INTAKE SWITCHER
   ========================================================================== */
.intake-tabs {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.intake-tab {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.85rem 1.8rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.intake-tab.active {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-crimson);
  color: var(--accent-crimson);
  box-shadow: 0 4px 15px -3px rgba(139, 38, 62, 0.2);
}

.intake-panel {
  display: none;
}

.intake-panel.active {
  display: block;
  animation: fadeIn 0.3s ease-in-out;
}

/* ==========================================================================
   FORMS & CONTROLS
   ========================================================================== */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.15rem;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  background: #FFFFFF;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
}

[data-theme="dark"] .form-control {
  background: #141210;
  color: var(--text-main);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-crimson);
  box-shadow: 0 0 0 3px rgba(139, 38, 62, 0.15);
}

/* ==========================================================================
   PAGE HERO & BREADCRUMBS
   ========================================================================== */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--text-subtle);
  margin-bottom: 2rem;
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumbs a:hover {
  color: var(--accent-crimson);
}

.page-hero {
  padding-top: 9rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, var(--bg-surface) 0%, transparent 100%);
}

.page-hero h1 {
  margin-bottom: 1rem;
}

.page-hero p.lead {
  font-size: 1.25rem;
  max-width: 820px;
  color: var(--text-muted);
}

.detail-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3.5rem;
  margin-top: 3.5rem;
}

.content-block {
  margin-bottom: 3.5rem;
}

.content-block h2 {
  font-size: 1.95rem;
  margin-bottom: 1rem;
}

.sidebar-card {
  position: sticky;
  top: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.sidebar-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-item:last-child {
  border-bottom: none;
}

.sidebar-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-subtle);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.sidebar-value {
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
}

.callout-box {
  background: rgba(139, 38, 62, 0.05);
  border-left: 4px solid var(--accent-crimson);
  padding: 1.5rem 1.75rem;
  border-radius: 0 10px 10px 0;
  margin: 1.5rem 0;
}

/* ==========================================================================
   STATS & CASE STUDIES
   ========================================================================== */
.stat-highlight {
  font-family: var(--font-heading);
  font-size: clamp(2.75rem, 5vw, 4.25rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--text-main);
}

.case-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.step-number {
  font-family: var(--font-mono);
  font-weight: 700;
}

.card-link {
  color: var(--accent-crimson);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.925rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.5rem;
  transition: var(--transition);
}

.card-link:hover {
  gap: 0.75rem;
  color: var(--accent-rust);
}

/* ==========================================================================
   FOOTER (Fine Print Editorial Foundation)
   ========================================================================== */
footer {
  border-top: 1px solid var(--border-subtle);
  background: #EFE9DD;
  padding: 5rem 0 2.5rem 0;
  color: var(--text-muted);
  transition: background-color 0.3s ease;
}

[data-theme="dark"] footer {
  background: #0E0C0A;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3.5rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  font-size: 0.95rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col ul a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--accent-crimson);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--text-subtle);
  text-decoration: none;
}

/* ==========================================================================
   ANIMATIONS & TRANSITIONS
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 2rem;
  cursor: pointer;
  z-index: 101;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   MEDIA QUERIES (Responsive Rigor)
   ========================================================================== */
@media (max-width: 1100px) {
  .grid-5, .studio-track {
    grid-template-columns: repeat(3, 1fr);
  }
  .principles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .grid-2, .thesis-grid {
    grid-template-columns: 1fr;
  }
  .grid-5, .studio-track {
    grid-template-columns: 1fr;
  }
  .principles-grid {
    grid-template-columns: 1fr;
  }
  .detail-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .metric-strip-inner {
    grid-template-columns: 1fr;
  }
  .metric-cell {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.5rem 0;
    margin-right: 0;
  }
  .metric-cell:last-child {
    border-bottom: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(249, 246, 240, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transition: var(--transition);
    z-index: 99;
  }
  [data-theme="dark"] .nav-links {
    background: rgba(20, 18, 16, 0.98);
  }
  .nav-links.active {
    right: 0;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 1.25rem;
  }
  .hero {
    padding-top: 6.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  .cta-group {
    flex-direction: column;
    width: 100%;
  }
  .cta-group .btn-primary,
  .cta-group .btn-secondary {
    width: 100%;
  }
  .intake-tabs {
    flex-direction: column;
  }
}