/* ==========================================================================
   Gitty-Backup GitHub Pages Showcase - Cyber-Dark Glassmorphism Design System
   ========================================================================== */

:root {
  --bg-main: #11111b;
  --bg-surface: #181825;
  --bg-card: rgba(30, 30, 46, 0.7);
  --bg-glass: rgba(24, 24, 37, 0.85);
  --border-color: rgba(205, 214, 244, 0.12);
  --border-highlight: rgba(137, 180, 250, 0.4);
  
  --text-primary: #cdd6f4;
  --text-secondary: #a6adc8;
  --text-muted: #6c7086;
  
  --accent-blue: #89b4fa;
  --accent-purple: #cba6f7;
  --accent-cyan: #89dceb;
  --accent-green: #a6e3a1;
  --accent-yellow: #f9e2af;
  --accent-red: #f38ba8;
  
  --gradient-main: linear-gradient(135deg, #89b4fa 0%, #cba6f7 50%, #f38ba8 100%);
  --gradient-card: linear-gradient(180deg, rgba(49, 50, 68, 0.5) 0%, rgba(24, 24, 37, 0.8) 100%);
  --shadow-glow: 0 0 30px rgba(137, 180, 250, 0.15);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.4);
  
  --font-main: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-code: 'Fira Code', 'Consolas', 'Courier New', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Inline Code Chips inside Text */
p code, h3 code, li code {
  background: rgba(137, 180, 250, 0.12);
  color: var(--accent-cyan);
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  font-family: var(--font-code);
  font-size: 0.88em;
  border: 1px solid rgba(137, 180, 250, 0.22);
}

/* Background Ambient Glows */
.bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(140px);
  z-index: -1;
  opacity: 0.25;
  pointer-events: none;
}

.glow-top-left {
  top: -100px;
  left: -150px;
  background: var(--accent-blue);
}

.glow-top-right {
  top: 20%;
  right: -200px;
  background: var(--accent-purple);
}

.glow-bottom {
  bottom: 10%;
  left: 30%;
  background: var(--accent-red);
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-brand span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.25s ease;
}

.nav-links a:hover {
  color: var(--accent-blue);
}

.btn-github {
  background: rgba(137, 180, 250, 0.1);
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
  padding: 0.5rem 1.25rem;
  border-radius: 99px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-github:hover {
  background: var(--accent-blue);
  color: var(--bg-main);
  box-shadow: 0 0 20px rgba(137, 180, 250, 0.4);
}

/* Hero Section */
.hero {
  padding: 6rem 5% 4rem;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(203, 166, 247, 0.12);
  border: 1px solid rgba(203, 166, 247, 0.3);
  color: var(--accent-purple);
  padding: 0.4rem 1rem;
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero h1 .gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--gradient-main);
  color: #11111b;
  font-weight: 700;
  padding: 0.85rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(137, 180, 250, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(137, 180, 250, 0.5);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  border-color: var(--accent-purple);
  background: rgba(203, 166, 247, 0.08);
}

/* Interactive Terminal Section */
.terminal-section {
  max-width: 1000px;
  margin: 2rem auto 5rem;
  padding: 0 5%;
}

.terminal-header-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.terminal-controls {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.term-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-family: var(--font-code);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.term-btn:hover, .term-btn.active {
  background: rgba(137, 180, 250, 0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: 0 0 15px rgba(137, 180, 250, 0.2);
}

.terminal-window {
  background: #0d0d15;
  border: 1px solid rgba(137, 180, 250, 0.25);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 40px rgba(137, 180, 250, 0.1);
}

.terminal-topbar {
  background: #181825;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #f38ba8; }
.dot-yellow { background: #f9e2af; }
.dot-green { background: #a6e3a1; }

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

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-code);
  font-size: 0.9rem;
  height: 340px;
  overflow-y: auto;
  line-height: 1.7;
  color: #a6e3a1;
}

.term-line {
  margin-bottom: 0.35rem;
  opacity: 0;
  animation: fadeIn 0.3s forwards;
}

.log-time { color: var(--text-muted); }
.log-cyan { color: var(--accent-cyan); }
.log-yellow { color: var(--accent-yellow); }
.log-green { color: var(--accent-green); }
.log-purple { color: var(--accent-purple); }
.log-red { color: var(--accent-red); }

@keyframes fadeIn {
  to { opacity: 1; }
}

/* Features Grid */
.features-section {
  max-width: 1200px;
  margin: 4rem auto;
  padding: 0 5%;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 16px;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

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

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
  display: inline-block;
}

.feature-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

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

/* Sync Modes Comparison */
.modes-section {
  max-width: 1100px;
  margin: 6rem auto;
  padding: 0 5%;
}

.modes-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.mode-tab {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.75rem 1.75rem;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}

.mode-tab.active, .mode-tab:hover {
  background: var(--accent-purple);
  color: #11111b;
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(203, 166, 247, 0.4);
}

.mode-content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  backdrop-filter: blur(12px);
  min-height: 220px;
}

.mode-pane {
  display: none;
}

.mode-pane.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

.mode-pane h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mode-pane p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.mode-tag {
  display: inline-block;
  background: rgba(166, 227, 161, 0.15);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-family: var(--font-code);
  font-size: 0.85rem;
  margin-right: 0.5rem;
}

/* Architecture & Commands */
.code-section {
  max-width: 1000px;
  margin: 5rem auto;
  padding: 0 5%;
}

.code-box {
  background: #0d0d15;
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  font-family: var(--font-code);
  font-size: 0.9rem;
  overflow-x: auto;
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.copy-btn:hover {
  background: var(--accent-blue);
  color: #11111b;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 5%;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 6rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  .nav-links { display: none; }
  .terminal-body { height: 280px; font-size: 0.8rem; }
}