/* MARS Curiosity - Static Documentation & Overview Stylesheet */
:root {
  --bg-primary: #0b1120;
  --bg-secondary: #1e293b;
  --bg-card: #131c31;
  --border: #283548;
  --border-accent: #38bdf8;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-blue: #38bdf8;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --accent-purple: #a78bfa;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #7dd3fc;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
header {
  border-bottom: 1px solid var(--border);
  background: rgba(11, 17, 32, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.brand span.mars-tag {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
}

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

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

/* Hero Section */
.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-amber);
  margin-bottom: 14px;
  display: inline-block;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 820px;
}

.hero p.lead {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 720px;
  margin-bottom: 32px;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--accent-blue);
  color: #0b1120;
}

.btn-primary:hover {
  background: #7dd3fc;
  color: #0b1120;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--text-main);
}

/* Section Layout */
section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type {
  border-bottom: none;
}

.section-header {
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 680px;
}

/* Cards & Grids */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 22px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.2s ease, transform 0.15s ease;
}

.card:hover {
  border-color: #3b4d66;
}

.card-link:hover .card {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

.card-top {
  margin-bottom: 18px;
}

.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.card-icon {
  font-size: 22px;
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 99px;
  font-weight: 600;
}

.status-live {
  background: rgba(16, 185, 129, 0.14);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-soon {
  background: rgba(245, 158, 11, 0.14);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text-main);
}

.card p {
  font-size: 14px;
  color: var(--text-muted);
}

.card-footer-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-blue);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Code / Terminal Blocks */
pre {
  background: #070b14;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: #e2e8f0;
  margin: 16px 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(56, 189, 248, 0.1);
  color: #7dd3fc;
  padding: 2px 5px;
  border-radius: 4px;
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* Mockup Preview Box for App Pages */
.preview-window {
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 24px 0;
  box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.5);
}

.preview-bar {
  background: #1e293b;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-red { background: #ef4444; }
.dot-amber { background: #f59e0b; }
.dot-green { background: #10b981; }

.preview-body {
  padding: 24px;
}

/* Feature List */
.feature-list {
  list-style: none;
  margin-top: 12px;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--text-muted);
}

.feature-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-blue);
  font-family: var(--font-mono);
}

.feature-list strong {
  color: var(--text-main);
}

/* Breadcrumb */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  margin-top: 40px;
  color: var(--text-dim);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

@media (max-width: 640px) {
  .nav-links {
    gap: 14px;
    font-size: 13px;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
}