/* ==========================================
   JVibeSchool Master CSS - Light & Dark Theme
   ========================================== */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Common Palette */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-code: 'Menlo', 'Monaco', 'Courier New', monospace;
  
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-accent: #06b6d4;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-violet: #8b5cf6;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --border-radius-xl: 28px;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-body: #070913;
  --bg-nav: rgba(11, 15, 25, 0.8);
  --bg-card: rgba(17, 24, 39, 0.65);
  --bg-card-hover: rgba(30, 41, 59, 0.75);
  --bg-pill: rgba(255, 255, 255, 0.06);
  --bg-input: rgba(15, 23, 42, 0.8);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-hover: rgba(99, 102, 241, 0.4);

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 20px rgba(99, 102, 241, 0.1);
  --shadow-glow: 0 0 35px rgba(99, 102, 241, 0.25);
  
  --canvas-particle: rgba(255, 255, 255, 0.85);
  --canvas-line: rgba(99, 102, 241, 0.25);
}

/* Light Theme */
[data-theme="light"] {
  --bg-body: #f8fafc;
  --bg-nav: rgba(255, 255, 255, 0.85);
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --bg-pill: rgba(0, 0, 0, 0.04);
  --bg-input: #ffffff;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(99, 102, 241, 0.5);

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.03);
  --shadow-glow: 0 0 35px rgba(99, 102, 241, 0.15);
  
  --canvas-particle: rgba(15, 23, 42, 0.75);
  --canvas-line: rgba(79, 70, 229, 0.2);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

code, .code-font {
  font-family: var(--font-code);
}

/* Typography Utilities */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.gradient-text {
  background: linear-gradient(135deg, #6366f1 0%, #06b6d4 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-domain {
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.logo-text .highlight {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-item {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Theme Toggle Button */
.theme-btn {
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.theme-btn:hover {
  border-color: var(--color-primary);
  transform: scale(1.05);
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

.cta-nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-primary), #4338ca);
  color: #ffffff;
  padding: 10px 20px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
  transition: all var(--transition-fast);
}

.cta-nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

/* Hero Section & Canvas */
.hero-section {
  position: relative;
  min-height: 90vh;
  padding-top: 150px;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
  z-index: 2;
  pointer-events: none;
}

.background-glow-1 {
  width: 500px;
  height: 500px;
  background: var(--color-primary);
  top: 10%;
  left: 20%;
}

.background-glow-2 {
  width: 450px;
  height: 450px;
  background: var(--color-accent);
  bottom: 10%;
  right: 20%;
}

.hero-container {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--color-primary);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 36px auto;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #fff;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

/* Quick Stats Bar */
.quick-stats {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  padding: 16px 36px;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.stat-divider {
  width: 1px;
  height: 32px;
  background-color: var(--border-color);
}

/* Section Header Base */
.dashboard-section, .features-section, .about-section {
  padding: 100px 0;
  position: relative;
  z-index: 10;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

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

/* Server Dashboard (4 Cards Grid) */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}

.dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card-hover:hover {
  transform: translateY(-6px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-glow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.icon-emerald { background: linear-gradient(135deg, #10b981, #059669); }
.icon-cyan { background: linear-gradient(135deg, #06b6d4, #0284c7); }
.icon-violet { background: linear-gradient(135deg, #8b5cf6, #6366f1); }
.icon-amber { background: linear-gradient(135deg, #f59e0b, #d97706); }

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-indicator.active {
  background: rgba(6, 182, 212, 0.12);
  color: #06b6d4;
  border-color: rgba(6, 182, 212, 0.3);
}

.status-indicator.secured {
  background: rgba(139, 92, 246, 0.12);
  color: #a78bfa;
  border-color: rgba(139, 92, 246, 0.3);
}

.status-indicator.tuned {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}

.ping-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.card-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.card-metrics {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
}

.metric-row .label {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.metric-row .label svg {
  width: 14px;
  height: 14px;
}

.metric-row .value {
  font-weight: 600;
  color: var(--text-main);
}

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

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

/* Progress Bars */
.card-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.progress-bar-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

.progress-bar {
  height: 6px;
  border-radius: 3px;
  background: var(--bg-pill);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #34d399);
  border-radius: 3px;
  transition: width 0.8s ease-in-out;
}

.cyan-fill { background: linear-gradient(90deg, #06b6d4, #38bdf8); }
.violet-fill { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.amber-fill { background: linear-gradient(90deg, #f59e0b, #fbbf24); }

/* Features & Links Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 30px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-pill);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.feature-link-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-radius: 10px;
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.feature-link-btn:hover {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

/* About & Footer */
.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-xl);
  padding: 48px;
  backdrop-filter: blur(16px);
  text-align: center;
}

.about-content h2 {
  font-size: 2.2rem;
  margin: 16px 0;
}

.about-content p {
  color: var(--text-muted);
  max-width: 750px;
  margin: 0 auto 28px auto;
  font-size: 1.05rem;
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 20px;
  background: var(--bg-pill);
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
  font-weight: 500;
}

.footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-copy {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-left: 12px;
}

.footer-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover {
  text-decoration: underline;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1rem; }
  .quick-stats { flex-direction: column; gap: 16px; width: 100%; }
  .stat-divider { width: 100%; height: 1px; }
  .hero-cta { flex-direction: column; width: 100%; }
  .btn { width: 100%; justify-content: center; }
  .about-card { padding: 24px; }
  .footer-container { flex-direction: column; text-align: center; }
  .footer-brand { flex-direction: column; }
  .footer-copy { margin-left: 0; }
}