/* ============================================================
   Orbit Academic v2.0 — Modern Dark Glassmorphic Design System
   PHP / HTML / CSS / JS Web Application
   ============================================================ */

:root {
  --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Color Palette */
  --bg-deep: #07090e;
  --bg-surface: #0e111a;
  --bg-card: rgba(18, 22, 34, 0.75);
  --bg-card-hover: rgba(26, 32, 50, 0.85);

  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --shadow-glow: 0 0 50px rgba(99, 102, 241, 0.18);
  --backdrop-blur: blur(20px);
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Background Light Orbs */
.ambient-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
  animation: float 20s infinite alternate ease-in-out;
}

.glow-orb-1 {
  top: -10%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: var(--accent-indigo);
}

.glow-orb-2 {
  top: 40%;
  right: -10%;
  width: 700px;
  height: 700px;
  background: var(--accent-purple);
  animation-delay: -5s;
}

.glow-orb-3 {
  bottom: -10%;
  left: 10%;
  width: 500px;
  height: 500px;
  background: var(--accent-cyan);
  animation-delay: -10s;
}

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 40px) scale(1.1); }
  100% { transform: translate(-20px, 20px) scale(0.95); }
}

/* Layout & Containers */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 10;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 16px;
  z-index: 100;
  margin-bottom: 40px;
}

.nav-glass {
  background: rgba(14, 17, 26, 0.7);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-indigo) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

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

/* Hero Section */
.hero {
  padding: 60px 0 100px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 30px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent-indigo);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.75rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-indigo) 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  max-width: 680px;
  margin: 0 auto 36px;
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
}

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

.hero-preview {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
  border-radius: 24px;
  padding: 12px;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), rgba(255,255,255,0.02));
  border: 1px solid var(--border-subtle);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), var(--shadow-glow);
}

.hero-image {
  width: 100%;
  height: auto;
  border-radius: 16px;
  display: block;
}

/* Feature Grid */
.features-section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

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

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-indigo);
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* Role Selector & Showcase Tabs */
.showcase-section {
  padding: 80px 0;
}

.tabs-header {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 12px 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: var(--accent-indigo);
  color: #ffffff;
  border-color: var(--accent-indigo);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.tab-content {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: var(--backdrop-blur);
}

.tab-content.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.showcase-text h3 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.showcase-list {
  list-style: none;
  margin-top: 24px;
}

.showcase-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.check-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.75rem;
}

/* Pricing Section */
.pricing-section {
  padding: 100px 0;
}

.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 50px;
}

.switch {
  position: relative;
  display: inline-block;
  width: 56px;
  height: 30px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-subtle);
  transition: .3s;
  border-radius: 30px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--accent-indigo);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

.discount-tag {
  padding: 4px 10px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 800;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-col;
  justify-content: space-between;
  backdrop-filter: var(--backdrop-blur);
  transition: all 0.3s ease;
}

.pricing-card.featured {
  border-color: var(--accent-indigo);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
}

.price-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.price-amount {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  margin: 20px 0 8px;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Passkey Tester Demo Box */
.demo-section {
  padding: 80px 0;
}

.demo-card {
  max-width: 680px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: var(--backdrop-blur);
}

.demo-form {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.input-field {
  flex: 1;
  padding: 14px 18px;
  background: rgba(7, 9, 14, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.input-field:focus {
  outline: none;
  border-color: var(--accent-indigo);
}

.demo-result {
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  display: none;
}

.demo-result.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
}

.demo-result.error {
  display: block;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: var(--accent-rose);
}

/* Footer */
footer {
  border-t: 1px solid var(--border-subtle);
  padding: 60px 0 40px;
  margin-top: 80px;
  background: var(--bg-surface);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-copy {
  color: var(--text-subtle);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 2.5rem; }
  .nav-links { display: none; }
  .tab-content.active { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: scale(1); }
}