/* ==========================================================================
   Design Tokens & Modern Styling for Siju App
   ========================================================================== */

:root {
  --bg-primary: #0a0c10;
  --bg-surface: #121620;
  --bg-card: rgba(22, 27, 39, 0.75);
  --bg-card-hover: rgba(30, 38, 56, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.4);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --brand-primary: #6366f1;
  --brand-primary-light: #818cf8;
  --brand-accent: #ec4899;
  --brand-cyan: #06b6d4;
  --brand-emerald: #10b981;
  --brand-amber: #f59e0b;
  
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Grotesk', monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-glow: 0 0 35px rgba(99, 102, 241, 0.25);
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-main);
}

body {
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Background Glows */
.ambient-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

.glow-1 {
  top: -150px;
  left: 20%;
  background: radial-gradient(circle, #4f46e5 0%, transparent 70%);
}

.glow-2 {
  top: 30%;
  right: -100px;
  background: radial-gradient(circle, #ec4899 0%, transparent 70%);
}

.grid-overlay {
  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: 40px 40px;
  pointer-events: none;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.navbar-wrapper {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 16px 24px;
}

.navbar {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: rgba(18, 22, 32, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

.logo-icon.small {
  width: 28px;
  height: 28px;
  border-radius: 8px;
}

.logo-text {
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo-text strong {
  color: var(--brand-primary-light);
  font-weight: 700;
}

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

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

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

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

/* Buttons */
.btn-primary, .btn-secondary, .btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

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

.btn-large {
  padding: 14px 28px;
  font-size: 1.05rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 70px 0 60px;
  text-align: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: #a5b4fc;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--brand-emerald);
  box-shadow: 0 0 10px var(--brand-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #a5b4fc 0%, #818cf8 40%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  max-width: 680px;
  color: var(--text-secondary);
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
}

/* Glassmorphism Dashboard Preview Card */
.dashboard-preview-card {
  width: 100%;
  max-width: 880px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), var(--shadow-glow);
  overflow: hidden;
  text-align: left;
}

.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(10, 12, 16, 0.5);
  border-bottom: 1px solid var(--border-subtle);
}

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

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-amber { background: #f59e0b; }
.dot-emerald { background: #10b981; }

.window-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.system-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--brand-emerald);
  font-weight: 600;
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-emerald);
  box-shadow: 0 0 8px var(--brand-emerald);
}

.card-body-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  padding: 28px;
}

.stat-mini-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
  margin-bottom: 6px;
}

.stat-trend {
  font-size: 0.8rem;
  font-weight: 500;
}

.stat-trend.up { color: var(--brand-emerald); }
.stat-trend.neutral { color: var(--brand-cyan); }

/* ==========================================================================
   Stats Bar
   ========================================================================== */
.stats-section {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(18, 22, 32, 0.4);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  text-align: center;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--brand-primary-light);
  margin-bottom: 4px;
}

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

/* ==========================================================================
   Features Section
   ========================================================================== */
.features-section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--brand-primary-light);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  backdrop-filter: blur(12px);
  transition: all var(--transition-smooth);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  border-color: var(--border-focus);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-purple {
  background: rgba(99, 102, 241, 0.15);
  color: var(--brand-primary-light);
}

.icon-blue {
  background: rgba(6, 182, 212, 0.15);
  color: var(--brand-cyan);
}

.icon-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--brand-emerald);
}

.icon-amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--brand-amber);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Ecosystem & Code Preview
   ========================================================================== */
.platform-section {
  padding: 60px 0 100px;
}

.platform-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.platform-text h2 {
  font-size: 2.1rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.platform-text p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 28px;
}

.ecosystem-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.eco-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.eco-bullet {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  margin-top: 6px;
}

.eco-bullet.active {
  background: var(--brand-primary);
  box-shadow: 0 0 10px var(--brand-primary);
}

.eco-info {
  display: flex;
  flex-direction: column;
}

.eco-info strong {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.eco-info span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.code-preview {
  background: #090c12;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.code-badge {
  color: var(--brand-emerald);
  font-weight: 600;
}

.code-preview pre {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
  overflow-x: auto;
}

.c-key {
  color: var(--brand-primary-light);
  font-weight: 600;
}

/* ==========================================================================
   Call To Action
   ========================================================================== */
.cta-section {
  padding: 40px 0 100px;
}

.cta-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.12) 100%);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: 60px 30px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-content {
  max-width: 620px;
  margin: 0 auto;
}

.cta-card h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-card p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0;
  background: #07090d;
}

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

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

.copyright {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .platform-box { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; width: 100%; }
  .btn-large { width: 100%; }
}