/* ==========================================================================
   R3e Multi-Tenant Sandbox Engine - Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-dark: #07090e;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(31, 41, 55, 0.8);
  --bg-term: #0b0f17;
  --bg-glass: rgba(15, 23, 42, 0.65);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.3);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --accent-indigo: #6366f1;
  --accent-indigo-glow: rgba(99, 102, 241, 0.25);
  --accent-cyan: #06b6d4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.2);
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.2);
  --accent-purple: #a855f7;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 60%, rgba(6, 182, 212, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: #ffffff;
}

a {
  color: var(--accent-indigo);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-cyan);
}

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

/* Utility Containers */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent-indigo);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.125rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 26px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-indigo), #4f46e5);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--accent-indigo-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

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

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7, 9, 14, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background 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;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: #ffffff;
}

.logo-badge {
  font-size: 0.75rem;
  padding: 3px 8px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-indigo));
  color: #ffffff;
  border-radius: 12px;
  font-family: var(--font-mono);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: #ffffff;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 170px 0 100px 0;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 30px;
  font-size: 0.875rem;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  font-weight: 500;
}

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

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
  100% { opacity: 1; transform: scale(1); }
}

.hero-title {
  font-size: 3.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: #ffffff;
}

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

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 40px auto;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.feature-pills {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.875rem;
  color: var(--text-main);
  backdrop-filter: blur(8px);
}

.badge-icon {
  color: var(--accent-emerald);
  font-weight: bold;
}

/* Multi-Tenant Simulator Section */
.simulator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(16px);
}

.simulator-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid var(--border-color);
}

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

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

.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.simulator-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tenant-active-badge {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.simulator-body {
  display: grid;
  grid-template-columns: 380px 1fr;
  min-height: 520px;
}

.sim-pane {
  padding: 24px;
}

.sim-pane-input {
  background: rgba(15, 23, 42, 0.4);
  border-right: 1px solid var(--border-color);
}

.sim-pane-output {
  background: var(--bg-term);
  display: flex;
  flex-direction: column;
}

.sim-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.sim-select, .sim-input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast);
}

.sim-select:focus, .sim-input:focus {
  outline: none;
  border-color: var(--accent-indigo);
  box-shadow: 0 0 0 2px var(--accent-indigo-glow);
}

.tenant-selector {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tenant-option-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.tenant-option-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-highlight);
}

.tenant-option-btn.active {
  background: rgba(99, 102, 241, 0.12);
  border-color: var(--accent-indigo);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}

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

.tenant-email {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: #ffffff;
}

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

.preset-cmds {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-btn {
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-btn:hover {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--accent-cyan);
}

.terminal-output {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: #d1d5db;
  overflow-y: auto;
  padding: 16px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.term-line { margin-bottom: 6px; }
.term-muted { color: #6b7280; }
.term-accent { color: var(--accent-cyan); }
.term-emerald { color: var(--accent-emerald); }
.term-amber { color: var(--accent-amber); }
.term-indigo { color: var(--accent-indigo); }
.term-purple { color: var(--accent-purple); }
.term-cmd { color: #ffffff; font-weight: 600; }

/* Grid Layouts & Cards */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition-normal);
  backdrop-filter: blur(12px);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-indigo);
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

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

/* Comparison Table / Grid Section */
.comparison-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.comp-column {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(12px);
}

.comp-column-trad {
  border-color: rgba(244, 63, 94, 0.25);
}

.comp-column-r3e {
  border-color: rgba(16, 185, 129, 0.35);
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.1);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.05) 0%, var(--bg-card) 100%);
}

.comp-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.comp-title {
  font-size: 1.35rem;
}

.comp-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.comp-item {
  display: flex;
  gap: 14px;
  font-size: 0.95rem;
}

.comp-bullet-negative {
  color: var(--accent-rose);
  font-weight: bold;
}

.comp-bullet-positive {
  color: var(--accent-emerald);
  font-weight: bold;
}

/* Code Blocks */
.code-block {
  background: var(--bg-term);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-main);
  position: relative;
  overflow-x: auto;
  white-space: pre;
}

.copy-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

/* Config Builder */
.config-builder {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(16px);
}

/* Tabs */
.tab-buttons {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.tab-btn {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.tab-btn.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--accent-indigo);
  color: #ffffff;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Security Cards */
.sec-card {
  border-left: 4px solid var(--accent-indigo);
}

.sec-card-admin {
  border-left-color: var(--accent-amber);
}

.sec-card-docker {
  border-left-color: var(--accent-emerald);
}

.cap-list {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cap-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.cap-icon {
  color: var(--accent-emerald);
  font-weight: bold;
}

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  background: rgba(5, 7, 11, 0.95);
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-link {
  color: var(--text-dim);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #ffffff;
}

/* Media Queries */
@media (max-width: 992px) {
  .hero-title { font-size: 2.75rem; }
  .simulator-body { grid-template-columns: 1fr; }
  .sim-pane-input { border-right: none; border-bottom: 1px solid var(--border-color); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .comparison-container { grid-template-columns: 1fr; }
  .config-builder { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.25rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .mobile-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: rgba(7, 9, 14, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.active { display: flex; }
  .hero-actions { flex-direction: column; }
  .footer-container { flex-direction: column; gap: 16px; text-align: center; }
}