/* ===================================================================
   INVARCORE LUMINOUS ENTERPRISE DESIGN SYSTEM
   Multi-Theme Engine: Luminous Light, Midnight Cosmic & Warm Paper
   =================================================================== */

:root, [data-theme="light"] {
  /* -------------------------------------------------------------
     THEME 1: LUMINOUS ENTERPRISE LIGHT (Stripe / Cloudflare Style)
     High-trust, bank-grade clarity, pearl canvas, deep slate text
     ------------------------------------------------------------- */
  --bg-deep: #F8FAFC;
  --bg-cosmic: #FFFFFF;
  --bg-slate: #F1F5F9;
  --bg-card: rgba(255, 255, 255, 0.90);
  --bg-card-hover: #FFFFFF;
  --bg-card-highlight: #F8FAFC;

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-light: rgba(15, 23, 42, 0.12);
  --border-focus: rgba(2, 132, 199, 0.5);
  --border-emerald: rgba(16, 185, 129, 0.4);
  --border-purple: rgba(147, 51, 234, 0.35);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-light: #334155;

  --accent-cyan: #0284C7;
  --accent-cyan-glow: rgba(2, 132, 199, 0.15);
  --accent-blue: #2563EB;
  --accent-indigo: #4F46E5;
  --accent-purple: #7C3AED;
  --accent-purple-glow: rgba(124, 58, 237, 0.12);
  --accent-emerald: #059669;
  --accent-emerald-glow: rgba(5, 150, 105, 0.12);
  --accent-amber: #D97706;
  --accent-rose: #E11D48;

  --navbar-bg: rgba(248, 250, 252, 0.88);
  --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --card-shadow-hover: 0 18px 36px -4px rgba(15, 23, 42, 0.10), 0 6px 12px -2px rgba(15, 23, 42, 0.04);
  --hero-mesh: 
    radial-gradient(ellipse 90% 60% at 50% -10%, rgba(2, 132, 199, 0.09) 0%, transparent 60%),
    radial-gradient(ellipse 70% 50% at 90% 20%, rgba(99, 102, 241, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 10% 45%, rgba(147, 51, 234, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse 80% 50% at 50% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 60%);
  --grid-line: rgba(15, 23, 42, 0.035);
  --gradient-title-from: #0F172A;
  --gradient-title-to: #0284C7;
  --footer-bg: #F1F5F9;
  --hero-pill-bg: linear-gradient(90deg, rgba(2, 132, 199, 0.08), rgba(124, 58, 237, 0.08));
  --hero-pill-border: rgba(2, 132, 199, 0.25);
  --lens-switcher-bg: #E2E8F0;
  --btn-github-bg: rgba(15, 23, 42, 0.05);
  --code-bg: #0F172A;
  --code-text: #F8FAFC;
  --switcher-bg: #E2E8F0;
  --switcher-active-bg: #FFFFFF;
  --switcher-active-text: #0F172A;
  --switcher-active-shadow: 0 2px 6px rgba(15, 23, 42, 0.12);

  /* Typography */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Layout & Animation */
  --container-max: 1260px;
  --transition-smooth: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* -------------------------------------------------------------
     THEME 2: MIDNIGHT COSMIC (Linear / Cybernetic Dark Style)
     Deep obsidian canvas, radiant neon cyan/purple glowing accents
     ------------------------------------------------------------- */
  --bg-deep: #070B14;
  --bg-cosmic: #0B0F19;
  --bg-slate: #0F172A;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(22, 33, 62, 0.85);
  --bg-card-highlight: rgba(30, 41, 59, 0.7);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.15);
  --border-focus: rgba(0, 210, 255, 0.5);
  --border-emerald: rgba(16, 185, 129, 0.4);
  --border-purple: rgba(168, 85, 247, 0.4);

  --text-primary: #FFFFFF;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-light: #CBD5E1;

  --accent-cyan: #00D2FF;
  --accent-cyan-glow: rgba(0, 210, 255, 0.35);
  --accent-blue: #3B82F6;
  --accent-indigo: #6366F1;
  --accent-purple: #A855F7;
  --accent-purple-glow: rgba(168, 85, 247, 0.25);
  --accent-emerald: #10B981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-amber: #F59E0B;
  --accent-rose: #F43F5E;

  --navbar-bg: rgba(7, 11, 20, 0.82);
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  --card-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 210, 255, 0.1);
  --hero-mesh: 
    radial-gradient(ellipse 90% 60% at 50% -10%, rgba(0, 210, 255, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 70% 50% at 90% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 10% 45%, rgba(168, 85, 247, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 80% 50% at 50% 80%, rgba(16, 185, 129, 0.06) 0%, transparent 60%);
  --grid-line: rgba(255, 255, 255, 0.02);
  --gradient-title-from: #FFFFFF;
  --gradient-title-to: var(--accent-cyan);
  --footer-bg: rgba(5, 8, 16, 0.95);
  --hero-pill-bg: linear-gradient(90deg, rgba(0, 210, 255, 0.1), rgba(168, 85, 247, 0.1));
  --hero-pill-border: rgba(0, 210, 255, 0.3);
  --lens-switcher-bg: rgba(15, 23, 42, 0.85);
  --btn-github-bg: rgba(255, 255, 255, 0.05);
  --code-bg: #070B14;
  --code-text: #00D2FF;
  --switcher-bg: rgba(15, 23, 42, 0.8);
  --switcher-active-bg: rgba(255, 255, 255, 0.14);
  --switcher-active-text: #FFFFFF;
  --switcher-active-shadow: 0 0 12px rgba(0, 210, 255, 0.2);
}

[data-theme="warm"] {
  /* -------------------------------------------------------------
     THEME 3: WARM ALABASTER (Anthropic Claude / Notion Paper Style)
     Warm sandstone canvas, charcoal ink typography, calm research feel
     ------------------------------------------------------------- */
  --bg-deep: #FAF8F5;
  --bg-cosmic: #FFFFFF;
  --bg-slate: #F4EFEA;
  --bg-card: rgba(255, 255, 255, 0.94);
  --bg-card-hover: #FFFFFF;
  --bg-card-highlight: #F5EFEB;

  --border-subtle: rgba(41, 37, 36, 0.09);
  --border-light: rgba(41, 37, 36, 0.14);
  --border-focus: rgba(217, 119, 6, 0.5);
  --border-emerald: rgba(13, 148, 136, 0.4);
  --border-purple: rgba(147, 51, 234, 0.35);

  --text-primary: #1C1917;
  --text-secondary: #57534E;
  --text-muted: #78716C;
  --text-light: #292524;

  --accent-cyan: #0F766E;
  --accent-cyan-glow: rgba(15, 118, 110, 0.2);
  --accent-blue: #2563EB;
  --accent-indigo: #4F46E5;
  --accent-purple: #7C3AED;
  --accent-purple-glow: rgba(124, 58, 237, 0.15);
  --accent-emerald: #0D9488;
  --accent-emerald-glow: rgba(13, 148, 136, 0.15);
  --accent-amber: #D97706;
  --accent-rose: #BE123C;

  --navbar-bg: rgba(250, 248, 245, 0.90);
  --card-shadow: 0 4px 18px -2px rgba(41, 37, 36, 0.05), 0 2px 5px -1px rgba(41, 37, 36, 0.03);
  --card-shadow-hover: 0 16px 32px -4px rgba(41, 37, 36, 0.09), 0 6px 12px -2px rgba(41, 37, 36, 0.04);
  --hero-mesh: 
    radial-gradient(ellipse 90% 60% at 50% -10%, rgba(217, 119, 6, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 70% 50% at 90% 20%, rgba(15, 118, 110, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 10% 45%, rgba(124, 58, 237, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse 80% 50% at 50% 80%, rgba(13, 148, 136, 0.05) 0%, transparent 60%);
  --grid-line: rgba(41, 37, 36, 0.035);
  --gradient-title-from: #1C1917;
  --gradient-title-to: #0F766E;
  --footer-bg: #F5EFEB;
  --hero-pill-bg: linear-gradient(90deg, rgba(217, 119, 6, 0.08), rgba(15, 118, 110, 0.08));
  --hero-pill-border: rgba(217, 119, 6, 0.25);
  --lens-switcher-bg: #E7E5E4;
  --btn-github-bg: rgba(41, 37, 36, 0.05);
  --code-bg: #292524;
  --code-text: #F5F5F4;
  --switcher-bg: #E7E5E4;
  --switcher-active-bg: #FFFFFF;
  --switcher-active-text: #1C1917;
  --switcher-active-shadow: 0 2px 6px rgba(41, 37, 36, 0.1);
}


/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

html[data-theme="light"],
html[data-theme="warm"] {
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  transition: background-color 0.25s ease, color 0.25s ease;
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  background-image: var(--hero-mesh);
  background-attachment: fixed;
}

/* Subtle Grid Texture */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-size: 48px 48px;
  background-image: 
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px), linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  mask-image: radial-gradient(ellipse at 50% 50%, rgba(0, 0, 0, 0.7) 0%, transparent 85%);
  z-index: 0;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography */
h1, h2, h3, h4, .brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.gradient-title {
  background: linear-gradient(135deg, var(--gradient-title-from) 10%, var(--text-secondary) 50%, var(--gradient-title-to) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-accent {
  background: linear-gradient(135deg, #00D2FF 0%, #818CF8 50%, #C084FC 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===================================================================
   NAVIGATION BAR
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  padding: 14px 0;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  flex-shrink: 0;
  margin-right: 24px;
}

.nav-logo {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  filter: drop-shadow(0 0 12px rgba(0, 210, 255, 0.4));
  transition: var(--transition-smooth);
}

.nav-brand:hover .nav-logo {
  transform: scale(1.05);
}

.nav-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  flex-shrink: 0;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.nav-links a:hover {
  color: var(--accent-cyan);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}


/* ===================================================================
   SUBTLE SETTINGS & APPEARANCE POPOVER (FAR RIGHT TOP EDGE)
   =================================================================== */
.settings-menu-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.btn-settings {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--btn-github-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-settings:hover,
.btn-settings[aria-expanded="true"] {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

.settings-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 150px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 5px;
  box-shadow: var(--card-shadow-hover), 0 16px 32px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.98);
  transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.18s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.18s;
}

.settings-popover.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.popover-header {
  padding: 4px 8px 6px 8px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 4px;
}

.popover-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.popover-theme-options {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 9px;
  border-radius: 7px;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
}

.theme-option svg {
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.theme-option:hover {
  background: var(--bg-card-highlight);
}

.theme-option:hover svg {
  color: var(--text-primary);
}

.theme-option.active {
  background: var(--bg-card-hover);
  border-color: var(--border-subtle);
}

.theme-option.active svg {
  color: var(--accent-cyan);
}

.theme-opt-name {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-primary);
  font-family: var(--font-body);
  flex: 1;
}

.theme-opt-check {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 700;
  opacity: 0;
  transition: var(--transition-smooth);
}

.theme-option.active .theme-opt-check {
  opacity: 1;
}

.theme-btn:hover {
  color: var(--text-primary);
}

.theme-btn.active {
  background: var(--switcher-active-bg);
  color: var(--switcher-active-text);
  box-shadow: var(--switcher-active-shadow);
}

@media (max-width: 680px) {
  .theme-btn-label {
    display: none;
  }
  .theme-btn {
    padding: 5px 7px;
  }
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 20px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid var(--border-emerald);
  font-size: 0.78rem;
  color: var(--accent-emerald);
  font-family: var(--font-mono);
  font-weight: 600;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.85); }
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--btn-github-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.btn-github:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(0, 210, 255, 0.2);
}

/* ===================================================================
   HERO SECTION
   =================================================================== */
.hero {
  padding: 84px 0 60px 0;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-radius: 100px;
  background: var(--hero-pill-bg);
  border: 1px solid var(--hero-pill-border);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 28px;
  box-shadow: 0 0 24px var(--accent-cyan-glow);
}

.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 4.2rem);
  font-weight: 800;
  line-height: 1.12;
  max-width: 980px;
  margin: 0 auto 24px auto;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 40px auto;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, #00D2FF 0%, #3B82F6 50%, #8B5CF6 100%);
  color: #050811;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  box-shadow: 0 4px 24px rgba(0, 210, 255, 0.4);
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(0, 210, 255, 0.6);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 9px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
}

/* Metric Highlights Banner */
.metrics-banner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  max-width: 1060px;
  margin: 0 auto;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 22px 18px;
  backdrop-filter: blur(16px);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: var(--transition-smooth);
}

.metric-card:hover {
  border-color: rgba(0, 210, 255, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
}

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

.metric-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.metric-source {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  margin-top: 4px;
}

/* ===================================================================
   THE 4-STAKEHOLDER EXECUTIVE LENS
   =================================================================== */
.section {
  padding: 88px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 52px auto;
}

.section-tag {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-size: clamp(2rem, 3.4vw, 2.75rem);
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.lens-switcher-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.lens-switcher {
  display: inline-flex;
  background: var(--lens-switcher-bg);
  border: 1px solid var(--lens-switcher-border);
  border-radius: 12px;
  padding: 4px;
  gap: 4px;
  backdrop-filter: blur(16px);
  flex-wrap: wrap;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.lens-tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--lens-tab-color);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 8px;
}

.lens-tab:hover {
  color: var(--lens-tab-hover-color);
}

.lens-tab.active {
  background: var(--lens-tab-active-bg);
  border: 1px solid var(--lens-tab-active-border);
  color: var(--lens-tab-active-color);
  box-shadow: var(--lens-tab-active-shadow);
}

.lens-content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 900px) {
  .lens-content-card {
    grid-template-columns: 1fr;
  }
}

.lens-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  background: var(--badge-cyan-bg);
  border: 1px solid var(--badge-cyan-border);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 16px;
}

.lens-headline {
  font-size: 1.7rem;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.lens-body {
  color: var(--text-secondary);
  font-size: 1.02rem;
  margin-bottom: 24px;
}

.lens-benefits {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lens-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-light);
}

.lens-benefits li strong {
  color: var(--accent-cyan);
}

.lens-stats-box {
  background: var(--bg-card-highlight);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.lens-stat-item {
  border-left: 3px solid var(--accent-cyan);
  padding-left: 14px;
}

.lens-stat-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.lens-stat-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===================================================================
   BEFORE VS AFTER (ENTERPRISE VALUE CONTRAST)
   =================================================================== */
.contrast-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

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

.contrast-card {
  border-radius: 14px;
  padding: 32px;
  position: relative;
}

.card-before {
  background: var(--card-before-bg);
  border: 1px solid var(--card-before-border);
}

.card-after {
  background: var(--card-after-bg);
  border: 1px solid var(--card-after-border);
  box-shadow: var(--card-shadow);
}

.contrast-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
}

.card-before .contrast-tag { color: var(--accent-rose); }
.card-after .contrast-tag { color: var(--accent-emerald); }

.contrast-title {
  font-size: 1.35rem;
  margin-bottom: 20px;
}

.contrast-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contrast-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.card-before .bullet-icon { color: var(--accent-rose); font-weight: 700; }
.card-after .bullet-icon { color: var(--accent-emerald); font-weight: 700; }

/* ===================================================================
   PRODUCT PORTFOLIO WITH DYNAMIC FILTERING
   =================================================================== */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 30px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

.filter-btn.active {
  background: rgba(0, 210, 255, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  border-color: rgba(0, 210, 255, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(0, 210, 255, 0.1);
}

.product-top {
  margin-bottom: 20px;
}

.product-badges {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 10px;
  flex-wrap: wrap;
}

.badge-mode {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-standalone {
  background: var(--badge-cyan-bg);
  border: 1px solid var(--badge-cyan-border);
  color: var(--accent-cyan);
}

.badge-suite {
  background: var(--badge-purple-bg);
  border: 1px solid var(--badge-purple-border);
  color: var(--accent-purple);
}

.badge-app {
  background: var(--badge-amber-bg);
  border: 1px solid var(--badge-amber-border);
  color: var(--accent-amber);
}

.badge-labs {
  background: var(--badge-indigo-bg);
  border: 1px solid var(--badge-indigo-border);
  color: #818CF8;
}

.product-name-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.product-icon {
  font-size: 1.6rem;
}

.product-name {
  font-size: 1.35rem;
  color: var(--text-primary);
}

.product-eli5 {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.5;
  margin-bottom: 16px;
}

.product-invariant {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  background: var(--badge-cyan-bg);
  border-left: 3px solid var(--accent-cyan);
  padding: 8px 12px;
  border-radius: 4px;
  margin-bottom: 18px;
}

.product-capabilities {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.product-capabilities li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-capabilities li span {
  color: var(--accent-emerald);
  font-weight: 700;
}

.product-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 12px;
}

.product-tech {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.product-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-smooth);
}

.product-link:hover {
  color: var(--accent-cyan);
}

/* ===================================================================
   VERIFICATION FABRIC (INTERACTIVE SYNERGY DIAGRAM)
   =================================================================== */
.fabric-container {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 36px;
  box-shadow: var(--card-shadow);
}

.fabric-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

.fabric-step {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 20px 14px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.fabric-step:hover, .fabric-step.active {
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 210, 255, 0.15);
}

.step-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 700;
  margin-bottom: 6px;
}

.step-title {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.step-engine {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.fabric-inspect-box {
  background: var(--bg-card-highlight);
  border: 1px solid var(--border-focus);
  border-radius: 12px;
  padding: 28px;
}

.inspect-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 10px;
}

.inspect-title {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.inspect-invariant {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  background: var(--badge-cyan-bg);
  padding: 6px 12px;
  border-radius: 6px;
  margin-bottom: 14px;
  border-left: 3px solid var(--accent-cyan);
}

.inspect-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

/* ===================================================================
   SECURITY STANDARDS & COMPLIANCE
   =================================================================== */
.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.standard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 26px;
}

.standard-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.standard-check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.standard-title {
  font-size: 1.1rem;
}

.standard-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* CVD Banner */
.cvd-banner {
  background: var(--bg-card);
  border: 1px solid rgba(0, 210, 255, 0.4);
  border-radius: 14px;
  padding: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: 0 10px 30px rgba(0, 210, 255, 0.1);
}

.cvd-info {
  max-width: 680px;
}

.cvd-title {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.cvd-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.btn-report {
  padding: 12px 24px;
  border-radius: 8px;
  background: rgba(0, 210, 255, 0.12);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-smooth);
  white-space: nowrap;
}

.btn-report:hover {
  background: var(--accent-cyan);
  color: #070B14;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
}

/* ===================================================================
   FOOTER
   =================================================================== */
.footer {
  padding: 72px 0 36px 0;
  border-top: 1px solid var(--border-subtle);
  background: var(--footer-bg);
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 56px;
  flex-wrap: wrap;
  gap: 36px;
}

.footer-brand-desc {
  color: var(--text-secondary);
  max-width: 360px;
  margin-top: 12px;
  font-size: 0.9rem;
}

.footer-cols {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-bottom: 16px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.86rem;
  transition: var(--transition-smooth);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 16px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  flex-shrink: 0;
}
  .hero { padding: 60px 0 36px 0; }
  .section { padding: 56px 0; }
  .products-grid { grid-template-columns: 1fr; }
}


/* Smooth Theme Transition */
body, .navbar, .product-card, .metric-card, .lens-content-card, .lens-stats-box, 
.fabric-container, .fabric-inspect-box, .cvd-banner, .footer, .btn-secondary, 
.btn-github, .filter-btn, .theme-switcher, .theme-btn {
  transition: background-color 0.24s cubic-bezier(0.16, 1, 0.3, 1),
              color 0.24s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.24s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

code {
  font-family: var(--font-mono);
  background: var(--bg-card-highlight);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  border: 1px solid var(--border-subtle);
}


/* ===================================================================
   FORMAL RESEARCH & TECHNICAL WHITEPAPERS STYLING
   =================================================================== */
.whitepapers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
}

.paper-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
  box-shadow: var(--card-shadow);
  position: relative;
}

.paper-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

.paper-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 8px;
  flex-wrap: wrap;
}

.paper-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: var(--badge-cyan-bg);
  border: 1px solid var(--badge-cyan-border);
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}

.paper-track {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

.paper-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.paper-title {
  font-size: 1.15rem;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-family: var(--font-display);
}

.paper-authors {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  font-family: var(--font-mono);
}

.paper-authors code {
  color: var(--accent-cyan);
}

.paper-abstract {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 16px;
  flex-grow: 1;
}

.paper-invariant-box {
  background: var(--bg-card-highlight);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-cyan);
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 20px;
  font-size: 0.82rem;
}

.inv-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent-cyan);
  margin-bottom: 4px;
}

.paper-invariant-box code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-primary);
  background: transparent;
  border: none;
  padding: 0;
  display: block;
  word-break: break-all;
}

.paper-bottom {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.btn-paper-read {
  flex: 1;
  padding: 8px 16px;
  border-radius: 7px;
  background: var(--badge-cyan-bg);
  border: 1px solid var(--badge-cyan-border);
  color: var(--accent-cyan);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-paper-read:hover {
  background: var(--accent-cyan);
  color: #FFFFFF;
}

.btn-paper-bibtex {
  padding: 8px 14px;
  border-radius: 7px;
  background: var(--bg-card-highlight);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-paper-bibtex:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

/* Technical Specification Modal */
.paper-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0.22s;
}

.paper-modal.open {
  opacity: 1;
  visibility: visible;
}

.paper-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.paper-modal-card {
  position: relative;
  width: 100%;
  max-width: 820px;
  max-height: 88vh;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  z-index: 2;
  overflow: hidden;
  transform: translateY(12px) scale(0.98);
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.paper-modal.open .paper-modal-card {
  transform: translateY(0) scale(1);
}

.paper-modal-close {
  position: absolute;
  top: 18px;
  right: 20px;
  background: transparent;
  border: none;
  font-size: 1.8rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
  line-height: 1;
  z-index: 5;
}

.paper-modal-close:hover {
  color: var(--text-primary);
}

.paper-modal-header {
  padding: 32px 32px 20px 32px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-card-highlight);
}

.paper-modal-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.paper-modal-title {
  font-size: 1.45rem;
  line-height: 1.3;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.paper-modal-body {
  padding: 28px 32px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.modal-section h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.modal-section p {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.bibtex-box {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 14px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
}

.paper-modal-footer {
  padding: 18px 32px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-card-highlight);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}


/* Systems Telemetry & Benchmark Table */
.telemetry-table-wrapper {
  overflow-x: auto;
  margin: 14px 0 8px 0;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}

.telemetry-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  background: var(--bg-card-highlight);
}

.telemetry-table th {
  background: var(--bg-card);
  color: var(--accent-cyan);
  padding: 10px 14px;
  text-align: left;
  border-bottom: 2px solid var(--border-light);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.telemetry-table td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.telemetry-table tr:last-child td {
  border-bottom: none;
}

.telemetry-table tr:hover td {
  background: var(--bg-card-hover);
}

.telemetry-highlight {
  color: var(--accent-emerald) !important;
  font-weight: 700;
}

@media print {
  body * {
    visibility: hidden;
  }
  #paper-modal, #paper-modal * {
    visibility: visible;
  }
  #paper-modal {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: auto;
    background: #FFFFFF !important;
    color: #000000 !important;
    padding: 0;
  }
  .paper-modal-card {
    max-width: 100%;
    max-height: none;
    box-shadow: none;
    border: none;
  }
  .paper-modal-backdrop, .paper-modal-close, .paper-modal-footer {
    display: none !important;
  }
}