/* ==========================================================================
   ZukiyaLab AI Agent Hub & Server Dashboard Stylesheet
   Color Palette: Calm Slate & Deep Teal / Subdued Indigo
   ========================================================================== */

:root {
  /* Dark Mode (Default) */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.72);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(15, 23, 42, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(56, 189, 248, 0.35);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-cyan: #38bdf8;
  --accent-teal: #14b8a6;
  --accent-indigo: #818cf8;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
  
  --particle-color: 56, 189, 248;
  --line-color: 99, 102, 241;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(241, 245, 249, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.8);
  --border-color: rgba(226, 232, 240, 0.9);
  --border-hover: rgba(14, 165, 233, 0.4);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --accent-cyan: #0284c7;
  --accent-teal: #0d9488;
  --accent-indigo: #4f46e5;
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;
  
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.12);
  
  --particle-color: 2, 132, 199;
  --line-color: 79, 70, 229;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark light;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(56, 189, 248, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(99, 102, 241, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Container */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-icon-wrapper {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
}

.brand-icon-wrapper i {
  width: 22px;
  height: 22px;
}

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

/* Theme Toggle Button */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-1px);
}

.theme-toggle i {
  width: 20px;
  height: 20px;
}

/* Nav Button Link */
.btn-nav-info {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.btn-nav-info:hover {
  background: var(--accent-cyan);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.35);
  transform: translateY(-1px);
}

.btn-nav-info i {
  width: 18px;
  height: 18px;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 100px;
  padding-bottom: 40px;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: auto;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  pointer-events: none;
}

.hero-content * {
  pointer-events: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.hero-badge i {
  width: 16px;
  height: 16px;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan) 80%, var(--accent-indigo) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 36px auto;
  font-weight: 400;
  line-height: 1.7;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-md);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.3);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(56, 189, 248, 0.45);
}

.btn-primary i {
  width: 20px;
  height: 20px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary i {
  width: 20px;
  height: 20px;
}

/* Section Common */
.section-header {
  text-align: center;
  margin-bottom: 44px;
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.section-title i {
  color: var(--accent-cyan);
  width: 28px;
  height: 28px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* Server Dashboard Grid */
.dashboard-section {
  padding: 30px 0 70px 0;
  position: relative;
  z-index: 5;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.metric-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-indigo));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

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

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon i {
  width: 20px;
  height: 20px;
}

.card-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

.metric-value-display {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.metric-unit {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.progress-track {
  width: 100%;
  height: 8px;
  background: rgba(148, 163, 184, 0.15);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-bar {
  height: 100%;
  width: 0%;
  border-radius: var(--radius-full);
  background: var(--accent-cyan);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.4s ease;
}

.card-footer {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 12px;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Features Grid Section */
.features-section {
  padding: 60px 0 100px 0;
  position: relative;
  z-index: 5;
}

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

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

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

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

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

.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(99, 102, 241, 0.15));
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon-box i {
  width: 24px;
  height: 24px;
}

.status-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-active {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-beta {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.status-upcoming {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.feature-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.feature-description {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.feature-link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  margin-top: 16px;
}

.feature-link-btn:hover {
  background: var(--accent-cyan);
  color: #ffffff;
  border-color: var(--accent-cyan);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
}

.feature-link-btn i {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.feature-link-btn:hover i {
  transform: translateX(4px);
}

/* Info Banner Section */
.info-banner {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.9));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-lg);
  margin-bottom: 80px;
}

[data-theme="light"] .info-banner {
  background: linear-gradient(135deg, #ffffff, #f1f5f9);
}

.info-banner-text h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-banner-text h3 i {
  color: var(--accent-cyan);
  width: 24px;
  height: 24px;
}

.info-banner-text p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  background: var(--bg-secondary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

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

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

/* Responsive */
@media (max-width: 768px) {
  .hero-section {
    min-height: 70vh;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  .info-banner {
    padding: 24px;
    flex-direction: column;
    text-align: center;
  }
  .info-banner-text h3 {
    justify-content: center;
  }
  .footer-content {
    flex-direction: column;
    justify-content: center;
  }
}