/* ==========================================================================
   ArmoryVault Portal — Streamlined Modern Design System
   ========================================================================== */

:root {
  --bg-darkest: #060910;
  --bg-primary: #090e1a;
  --bg-surface: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(24, 37, 65, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.6);

  --accent-cyan: #00d2ff;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 210, 255, 0.35);
  --border-glass: rgba(255, 255, 255, 0.12);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.6);
  --shadow-cyan: 0 0 30px rgba(0, 210, 255, 0.2);

  --font-sans: "Outfit", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
  background-color: var(--bg-darkest);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  background: radial-gradient(circle at 50% 0%, #121c33 0%, var(--bg-darkest) 75%);
  min-height: 100vh;
  position: relative;
}

/* Ambient glow & grid */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 600px;
  background: radial-gradient(
    ellipse 80% 40% at 50% -10%,
    rgba(0, 210, 255, 0.12),
    transparent 70%
  );
  pointer-events: none;
  z-index: 0;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography & Helpers */
h1,
h2,
h3,
h4 {
  font-weight: 800;
  line-height: 1.15;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  text-decoration: none;
  filter: brightness(1.15);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  display: flex;
  align-items: center;
  z-index: 100;
  transition: var(--transition);
  background: rgba(9, 14, 26, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar.scrolled {
  background: rgba(9, 14, 26, 0.92);
  box-shadow: var(--shadow-sm);
  border-bottom-color: rgba(0, 210, 255, 0.2);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  color: #ffffff;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 210, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(0, 210, 255, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 210, 255, 0.3);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.nav-link:hover {
  color: #ffffff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 6px;
}

/* Mobile Drawer */
.mobile-nav-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(9, 14, 26, 0.98);
  backdrop-filter: blur(20px);
  padding: 24px;
  border-bottom: 1px solid var(--border-subtle);
  flex-direction: column;
  gap: 16px;
  z-index: 99;
}

.mobile-nav-menu.open {
  display: flex;
}

.mobile-nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 10px 0;
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, #00d2ff 0%, #0284c7 100%);
  color: #04101e;
  box-shadow: 0 4px 18px rgba(0, 210, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 210, 255, 0.5);
  color: #000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-emerald {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #022315;
  box-shadow: 0 4px 18px rgba(16, 185, 129, 0.35);
}

.btn-emerald:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.5);
  color: #000;
}

.btn-paypal {
  background: linear-gradient(135deg, #0070ba 0%, #1546a0 100%);
  color: #ffffff;
}

.btn-paypal:hover {
  filter: brightness(1.15);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid rgba(0, 210, 255, 0.3);
  color: var(--accent-cyan);
  margin-bottom: 20px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
  display: inline-block;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding-top: 140px;
  padding-bottom: 70px;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.3rem, 5.5vw, 4rem);
  font-weight: 900;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 36px auto;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-os-hint {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.hero-os-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-cyan);
  font-weight: 600;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.hero-meta-item svg {
  color: var(--accent-emerald);
}

/* ==========================================================================
   Interactive Showcase Frame
   ========================================================================== */
.showcase-section {
  margin-top: 10px;
  margin-bottom: 80px;
}

.showcase-tabs-nav {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: 999px;
  padding: 5px;
  gap: 6px;
  margin-bottom: 24px;
}

.showcase-tab-btn {
  background: none;
  border: none;
  padding: 8px 20px;
  border-radius: 999px;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.showcase-tab-btn.active {
  background: var(--accent-cyan);
  color: #04101e;
  box-shadow: 0 2px 12px rgba(0, 210, 255, 0.4);
}

.showcase-window {
  background: linear-gradient(180deg, rgba(20, 30, 52, 0.95) 0%, rgba(10, 16, 30, 0.98) 100%);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-cyan);
  overflow: hidden;
  text-align: left;
  position: relative;
}

.showcase-window-header {
  height: 44px;
  background: rgba(8, 12, 22, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 16px;
  justify-content: space-between;
}

.window-dots {
  display: flex;
  gap: 8px;
}

.window-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-red {
  background: #ef4444;
}
.dot-yellow {
  background: #f59e0b;
}
.dot-green {
  background: #10b981;
}

.window-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.showcase-body {
  padding: 28px;
}

/* Command Center Mock Content */
.cc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.cc-stat-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
}

.cc-stat-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.cc-stat-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
}

.cc-stat-sub {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  margin-top: 4px;
}

.cc-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.cc-panel {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}

.cc-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.cc-panel-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.cc-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.85rem;
}

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

.cc-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

/* Mobile Showcase View */
.mobile-showcase-view {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  padding: 20px;
  flex-wrap: wrap;
}

.phone-mockup {
  width: 280px;
  height: 520px;
  background: #020617;
  border: 6px solid #334155;
  border-radius: 36px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8);
  position: relative;
  overflow: hidden;
  padding: 16px;
}

.phone-notch {
  width: 100px;
  height: 18px;
  background: #334155;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.phone-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-top: 12px;
  font-size: 0.8rem;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 54px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* ==========================================================================
   Features Grid
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(0, 210, 255, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon-wrapper.emerald {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-emerald);
}

.feature-icon-wrapper.indigo {
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-indigo);
}

.feature-icon-wrapper.amber {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-amber);
}

.feature-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.feature-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
}

/* ==========================================================================
   Comparison Table
   ========================================================================== */
.comparison-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.92rem;
}

.comparison-table th {
  color: var(--text-secondary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.comparison-table th.highlight,
.comparison-table td.highlight {
  background: rgba(0, 210, 255, 0.05);
  border-left: 1px solid rgba(0, 210, 255, 0.2);
  border-right: 1px solid rgba(0, 210, 255, 0.2);
}

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

/* ==========================================================================
   Download Hub & OS Cards
   ========================================================================== */
.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.download-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.download-card.highlighted {
  border-color: var(--accent-cyan);
  background: rgba(0, 210, 255, 0.06);
  box-shadow: 0 0 24px rgba(0, 210, 255, 0.25);
}

.download-card.highlighted::before {
  content: "YOUR SYSTEM";
  position: absolute;
  top: -10px;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  background: var(--accent-cyan);
  color: #04101e;
  padding: 2px 10px;
  border-radius: 999px;
}

.os-icon {
  font-size: 2.4rem;
  color: #ffffff;
  margin-bottom: 14px;
}

.download-os {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.download-specs {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* Mobile Companion Spotlight */
.mobile-download-spotlight {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(9, 14, 26, 0.95) 100%);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-xl);
  padding: 36px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 32px;
}

.mobile-spotlight-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1.6rem;
  margin: 14px 0 10px 0;
}

.mobile-spotlight-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.mobile-spotlight-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.mobile-spotlight-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(16, 185, 129, 0.12);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.apk-qr-card {
  background: rgba(2, 6, 23, 0.8);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qr-scan-box {
  background: #ffffff;
  padding: 12px;
  border-radius: 12px;
  margin-bottom: 12px;
  display: inline-block;
}

.apk-qr-image {
  width: 170px;
  height: 170px;
  display: block;
}

.qr-scan-caption {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Terminal Gatekeeper Helper */
.terminal-box {
  background: #020617;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.btn-copy-cmd {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: #fff;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-copy-cmd:hover {
  background: var(--accent-cyan);
  color: #04101e;
}

/* ==========================================================================
   Community & Donation Deck
   ========================================================================== */
.support-section {
  padding: 70px 0;
}

.support-card {
  background: linear-gradient(135deg, rgba(20, 28, 48, 0.95), rgba(10, 16, 30, 0.95));
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-xl);
  padding: 44px;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.support-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.support-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 680px;
  margin: 0 auto 30px auto;
  line-height: 1.6;
}

.donation-presets-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.donation-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 90px;
}

.donation-chip.active,
.donation-chip:hover {
  background: rgba(0, 112, 186, 0.25);
  border-color: #0070ba;
  transform: translateY(-2px);
}

.chip-amount {
  font-size: 1.2rem;
  font-weight: 800;
}

.chip-label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.support-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  text-align: left;
  gap: 16px;
}

.faq-icon {
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
  flex-shrink: 0;
  color: var(--accent-cyan);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  background: #04070e;
  padding: 60px 0 30px 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.88rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .mobile-download-spotlight {
    grid-template-columns: 1fr;
  }
  .cc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cc-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-actions .btn-nav-donate {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .download-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .mobile-showcase-view {
    flex-direction: column;
  }
}

/* ==========================================================================
   Documentation & Knowledge Base Section (#docs)
   ========================================================================== */

.docs-section {
  position: relative;
  background:
    radial-gradient(circle at 50% 10%, rgba(0, 210, 255, 0.05) 0%, transparent 60%),
    radial-gradient(circle at 80% 80%, rgba(99, 102, 241, 0.04) 0%, transparent 50%),
    var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 90px 0;
}

.doc-search-container {
  max-width: 860px;
  margin: 0 auto 36px auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.doc-search-box {
  position: relative;
  width: 100%;
}

.doc-search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.doc-search-input {
  width: 100%;
  padding: 15px 44px 15px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.doc-search-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow:
    0 0 0 3px rgba(0, 210, 255, 0.15),
    var(--shadow-md);
  background: var(--bg-surface);
}

.doc-search-input::placeholder {
  color: var(--text-muted);
}

.doc-search-clear {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-secondary);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.75rem;
  transition: var(--transition);
}

.doc-search-clear:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
}

.doc-category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.doc-pill {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  background: rgba(15, 23, 42, 0.5);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.doc-pill:hover {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.doc-pill.active {
  background: linear-gradient(135deg, rgba(0, 210, 255, 0.2), rgba(59, 130, 246, 0.2));
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.15);
}

.docs-accordion-group {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.doc-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.doc-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: var(--bg-card-hover);
}

.doc-item[open] {
  border-color: rgba(0, 210, 255, 0.35);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.doc-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  gap: 16px;
}

.doc-summary::-webkit-details-marker {
  display: none;
}

.doc-summary-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.doc-icon-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  flex-shrink: 0;
}

.doc-header-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.doc-item-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}

.doc-item-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.doc-badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 6px;
  flex-shrink: 0;
}

.doc-badge-blue {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}
.doc-badge-cyan {
  background: rgba(0, 210, 255, 0.15);
  color: #00d2ff;
  border: 1px solid rgba(0, 210, 255, 0.3);
}
.doc-badge-amber {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.doc-badge-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.doc-badge-rose {
  background: rgba(244, 63, 94, 0.15);
  color: #f43f5e;
  border: 1px solid rgba(244, 63, 94, 0.3);
}
.doc-badge-indigo {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.doc-chevron {
  color: var(--text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.doc-item[open] .doc-chevron {
  transform: rotate(180deg);
  color: var(--accent-cyan);
}

.doc-content {
  padding: 0 24px 24px 78px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.65;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 18px;
}

.doc-content p {
  margin-bottom: 14px;
}

.doc-content h4 {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  margin: 18px 0 8px 0;
}

.doc-steps {
  margin-left: 20px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.doc-inline-code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-cyan);
}

.doc-code-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #04070e;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin: 12px 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #38bdf8;
  gap: 12px;
  overflow-x: auto;
}

.doc-code-block code {
  white-space: nowrap;
}

.doc-callout {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-top: 14px;
  font-size: 0.88rem;
  line-height: 1.5;
}

.doc-callout svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.doc-callout-tip {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34d399;
}

.doc-callout-info {
  background: rgba(0, 210, 255, 0.08);
  border: 1px solid rgba(0, 210, 255, 0.25);
  color: #67e8f9;
}

.doc-no-results {
  text-align: center;
  padding: 50px 20px;
  background: var(--bg-card);
  border: 1px dashed var(--border-glass);
  border-radius: var(--radius-lg);
  max-width: 600px;
  margin: 0 auto;
}

.doc-no-results h4 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.doc-no-results p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .doc-summary {
    padding: 14px 16px;
  }
  .doc-summary-left {
    gap: 12px;
  }
  .doc-content {
    padding: 14px 16px 18px 16px;
  }
  .doc-code-block {
    flex-direction: column;
    align-items: flex-start;
  }
  .doc-badge {
    display: none;
  }
}

/* ==========================================================================
   Modular Extensions Architecture Showcase
   ========================================================================== */

.modules-intro-card {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.8) 0%, rgba(24, 37, 65, 0.5) 100%);
  border: 1px solid rgba(0, 210, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 40px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
}

.modules-intro-card::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 210, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.modules-intro-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid rgba(0, 210, 255, 0.3);
  border-radius: 9999px;
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.modules-intro-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.modules-intro-card p {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.6;
  max-width: 820px;
  margin-bottom: 24px;
}

.modules-intro-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.module-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

.module-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
}

.module-icon-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
}

.module-icon-box.amber {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.25);
  color: var(--accent-amber);
}

.module-icon-box.cyan {
  background: rgba(0, 210, 255, 0.12);
  border-color: rgba(0, 210, 255, 0.25);
  color: var(--accent-cyan);
}

.module-icon-box.blue {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.25);
  color: var(--accent-blue);
}

.module-icon-box.emerald {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
}

.module-icon-box.rose {
  background: rgba(244, 63, 94, 0.12);
  border-color: rgba(244, 63, 94, 0.25);
  color: var(--accent-rose);
}

.module-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.module-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.module-size {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.module-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.module-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
  flex: 1;
}

.module-features-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.module-pill {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}