/* CSS Design System for TuiCraft.com */

:root {
  --bg-primary: #08090c;
  --bg-secondary: #0f1115;
  --bg-card: rgba(18, 20, 26, 0.65);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-yellow: #f59e0b;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 242, 254, 0.3);
  
  --glow-cyan: rgba(0, 242, 254, 0.15);
  --glow-blue: rgba(79, 172, 254, 0.15);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

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

/* Background Gradients & Orbs */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  z-index: -1;
  opacity: 0.45;
  pointer-events: none;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
  top: -100px;
  right: -50px;
  animation: floatOrb 15s infinite alternate ease-in-out;
}

.orb-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
  top: 600px;
  left: -150px;
  animation: floatOrb 20s infinite alternate-reverse ease-in-out;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 60px) scale(1.1); }
  100% { transform: translate(-20px, -30px) scale(0.9); }
}

/* Utility Layouts */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
}

.font-mono {
  font-family: var(--font-mono);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(8, 9, 12, 0.7);
  z-index: 100;
  transition: var(--transition-smooth);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 12px;
}

.logo-img {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  object-fit: cover;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff 30%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.025em;
}

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

.desktop-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

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

.nav-github-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 9999px;
  color: var(--text-primary) !important;
  font-size: 0.875rem !important;
}

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

.github-icon {
  width: 16px;
  height: 16px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

.menu-icon {
  width: 24px;
  height: 24px;
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 99;
  display: none;
  padding: 40px 24px;
  border-top: 1px solid var(--border-color);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
}

.mobile-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 500;
}

/* Hero Section */
.hero-section {
  padding-top: 160px;
  padding-bottom: 60px;
  text-align: center;
  position: relative;
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  color: var(--accent-cyan);
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(to right, #ffffff 40%, #a5f3fc 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 40px auto;
  font-weight: 400;
}

/* Tabs & Code Panel */
.cta-install-container {
  max-width: 500px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  backdrop-filter: blur(10px);
}

.install-tabs-header {
  display: flex;
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid var(--border-color);
}

.install-tab-btn {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 12px 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.install-tab-btn.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 2px solid var(--accent-cyan);
}

.install-tab-content {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.tab-pane {
  display: none;
  align-items: center;
  gap: 8px;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.tab-pane.active {
  display: flex;
}

.prompt-symbol {
  color: var(--accent-cyan);
  user-select: none;
}

.code-text {
  color: var(--text-primary);
  overflow-x: auto;
  white-space: nowrap;
  flex: 1;
  text-align: left;
}

.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

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

.copy-icon {
  width: 18px;
  height: 18px;
}

.copy-tooltip {
  position: absolute;
  bottom: 140%;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--accent-cyan);
  font-size: 0.75rem;
  padding: 4px 8px;
  border-radius: 4px;
  font-family: var(--font-sans);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
  white-space: nowrap;
}

.copy-btn.copied .copy-tooltip {
  opacity: 1;
}

/* Interactive Terminal Area */
.terminal-section {
  padding: 40px 24px;
  display: flex;
  justify-content: center;
}

.terminal-container {
  width: 100%;
  max-width: 1000px;
  background: #060709;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 
              0 0 40px rgba(0, 242, 254, 0.03);
  display: flex;
  flex-direction: column;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: rgba(18, 20, 26, 0.9);
  border-bottom: 1px solid var(--border-color);
}

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

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

.dot.red { background-color: var(--accent-red); }
.dot.yellow { background-color: var(--accent-yellow); }
.dot.green { background-color: var(--accent-green); }

.window-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  user-select: none;
}

.terminal-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.terminal-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

.terminal-body {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  min-height: 380px;
}

@media (max-width: 768px) {
  .terminal-body {
    grid-template-columns: 1fr;
  }
  .terminal-sidebar {
    border-left: none !important;
    border-top: 1px solid var(--border-color);
  }
  .hero-title {
    font-size: 2.25rem;
  }
}

/* Game Viewport */
.game-viewport {
  padding: 24px;
  background: #030405;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.ansi-graphics {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.4;
  color: #a7f3d0; /* Soft terminal green */
  letter-spacing: 0.05em;
  background: #020203;
  padding: 16px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.03);
  user-select: none;
  cursor: pointer;
  box-shadow: inset 0 4px 20px rgba(0,0,0,0.8);
  width: 100%;
  overflow-x: auto;
  transition: var(--transition-smooth);
}

.ansi-graphics:focus-visible {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: inset 0 4px 20px rgba(0,0,0,0.8),
              0 0 10px rgba(0,242,254,0.1);
}

.game-controls {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
}

.controls-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

kbd {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 4px;
  padding: 1px 5px;
  margin: 0 2px;
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.terminal-action-btn {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.terminal-action-btn:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

/* Console Logs Sidebar */
.terminal-sidebar {
  background: #050608;
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.log-stream {
  flex: 1;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.5;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 300px;
}

.log-line {
  word-break: break-all;
}

.log-line.system { color: var(--text-muted); }
.log-line.ssh { color: var(--accent-yellow); }
.log-line.web { color: var(--accent-blue); }
.log-line.join { color: var(--accent-green); }
.log-line.chat { color: var(--text-primary); }

.chat-user {
  color: var(--accent-cyan);
  font-weight: 500;
}

.terminal-input-container {
  border-top: 1px solid var(--border-color);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #020203;
}

.terminal-prompt {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  user-select: none;
}

#terminal-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  width: 100%;
}

#terminal-input::placeholder {
  color: var(--text-muted);
}

/* Features Section */
.features-section {
  position: relative;
}

.section-badge {
  text-align: center;
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section-title {
  text-align: center;
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 56px auto;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 32px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.04);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

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

.feature-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Quickstart Code Explorer */
.quickstart-section {
  position: relative;
}

.code-explorer {
  max-width: 760px;
  margin: 0 auto;
  background: #040507;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.code-explorer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: rgba(18, 20, 26, 0.8);
  border-bottom: 1px solid var(--border-color);
}

.explorer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.file-icon {
  width: 14px;
  height: 14px;
  color: var(--accent-cyan);
}

.explorer-action {
  display: flex;
}

.explorer-copy-btn {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.explorer-copy-btn:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

.code-explorer-body {
  padding: 24px;
  overflow-x: auto;
  background: #020304;
}

.code-explorer-body pre {
  margin: 0;
}

.code-explorer-body code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: #cbd5e1;
}

/* Syntax Highlighting */
.keyword { color: #f43f5e; font-weight: 500; }
.string { color: #34d399; }
.comment { color: var(--text-muted); font-style: italic; }
.number { color: #fb923c; }
.class-name { color: #60a5fa; }
.function-name { color: #a78bfa; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  background-color: #040507;
  padding: 64px 24px 24px 24px;
  margin-top: 80px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
}

@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
  }
}

.footer-left {
  max-width: 320px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.footer-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
  border: 1px solid var(--border-color);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-right {
  display: flex;
  gap: 64px;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--text-muted);
}