/* ==========================================================================
   ArmoryVault Modules Hub — 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, 0.65);

  --accent-cyan: #00d2ff;
  --accent-blue: #38bdf8;
  --accent-indigo: #818cf8;
  --accent-purple: #c084fc;
  --accent-emerald: #34d399;
  --accent-amber: #fbbf24;
  --accent-rose: #f87171;

  --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%, #131d36 0%, var(--bg-darkest) 80%);
  min-height: 100vh;
  position: relative;
}

/* Background Effects */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 650px;
  background: radial-gradient(
    ellipse 85% 45% at 50% -10%,
    rgba(0, 210, 255, 0.14),
    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;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(9, 14, 26, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  display: flex;
  align-items: center;
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(0, 210, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.brand-tag {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 9999px;
  background: rgba(192, 132, 252, 0.15);
  border: 1px solid rgba(192, 132, 252, 0.3);
  color: var(--accent-purple);
  font-weight: 600;
}

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

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

.nav-link:hover {
  color: var(--text-primary);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 13px 26px;
  font-size: 1.02rem;
  border-radius: var(--radius-md);
}

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

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 24px rgba(0, 210, 255, 0.5);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  padding: 70px 0 50px 0;
  text-align: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 9999px;
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid rgba(0, 210, 255, 0.25);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 22px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 18px;
  color: var(--text-primary);
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan) 80%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 32px auto;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

/* Catalog Filter Bar */
.filter-bar {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.search-box {
  flex: 1;
  min-width: 260px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-box svg {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 10px 14px 10px 42px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.92rem;
  font-family: inherit;
  transition: var(--transition);
}

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

.category-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip-btn {
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.chip-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.chip-btn.active {
  background: rgba(0, 210, 255, 0.15);
  border-color: rgba(0, 210, 255, 0.4);
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Modules Grid */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.module-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  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);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.module-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-glass);
}

.module-icon-box.amber { color: var(--accent-amber); border-color: rgba(251, 191, 36, 0.3); background: rgba(251, 191, 36, 0.1); }
.module-icon-box.cyan { color: var(--accent-cyan); border-color: rgba(0, 210, 255, 0.3); background: rgba(0, 210, 255, 0.1); }
.module-icon-box.blue { color: var(--accent-blue); border-color: rgba(56, 189, 248, 0.3); background: rgba(56, 189, 248, 0.1); }
.module-icon-box.emerald { color: var(--accent-emerald); border-color: rgba(52, 211, 153, 0.3); background: rgba(52, 211, 153, 0.1); }
.module-icon-box.rose { color: var(--accent-rose); border-color: rgba(248, 113, 113, 0.3); background: rgba(248, 113, 113, 0.1); }

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

.cat-badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-cyan);
}

.version-pill {
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.card-title {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
  flex: 1;
}

.card-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  margin-bottom: 16px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tag-pill {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: #cbd5e1;
}

.card-actions {
  display: flex;
  gap: 10px;
}

.btn-download-mod {
  flex: 1;
  background: rgba(0, 210, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.3);
  color: var(--accent-cyan);
  font-size: 0.82rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.btn-download-mod:hover {
  background: var(--accent-cyan);
  color: #04101e;
  border-color: var(--accent-cyan);
}

.btn-checksum {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  font-size: 0.82rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-checksum:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

/* Architecture Showcase Section */
.arch-section {
  padding: 60px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  margin-bottom: 44px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 50px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
}

.step-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(0, 210, 255, 0.2);
  line-height: 1;
  margin-bottom: 12px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Code Preview Card */
.code-card {
  background: #020617;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 40px;
}

/* Footer */
.footer {
  background: rgba(6, 9, 16, 0.95);
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0 30px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

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

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--accent-cyan);
  color: #f8fafc;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1000;
  animation: slideUp 0.25s ease-out;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .modules-grid { grid-template-columns: 1fr; }
}