/* ============================================
   FTH Trading — Doc Intelligence Engine
   GitHub Pages Theme
   ============================================ */

:root {
  --navy-deep: #0a0e1a;
  --navy-mid: #141a2e;
  --navy-light: #1a1f35;
  --navy-border: #2a2f45;
  --gold: #C8A951;
  --gold-dim: #a08840;
  --text-primary: #e8e6e3;
  --text-secondary: #8a8fa3;
  --text-muted: #5a5f73;
  --red-alert: #ff4444;
  --green-ok: #44cc88;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Courier New', monospace;
  --sans: 'Inter', 'Segoe UI', -apple-system, Helvetica, Arial, sans-serif;
  --serif: Georgia, 'Times New Roman', serif;
}

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

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

body {
  font-family: var(--sans);
  background-color: var(--navy-deep);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: 0.02em;
}

h1 {
  font-size: 2.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 0.75rem;
  display: inline-block;
}

h2 {
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
  color: var(--gold);
}

h3 {
  font-size: 1.125rem;
  margin: 1.5rem 0 0.75rem;
  color: var(--text-secondary);
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

a:hover {
  border-bottom-color: var(--gold);
}

/* Navigation */
nav {
  background: var(--navy-mid);
  border-bottom: 1px solid var(--navy-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

nav .brand {
  font-family: var(--serif);
  font-size: 1.125rem;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.05em;
}

nav .links {
  display: flex;
  gap: 1.5rem;
}

nav .links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

/* Hero */
.hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--navy-border);
}

.hero .subtitle {
  font-family: var(--sans);
  font-size: 0.875rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.hero h1 {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 1rem;
}

.hero .tagline {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
}

/* Section */
.section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--navy-border);
}

.section:last-child {
  border-bottom: none;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.875rem;
}

th {
  background: var(--navy-mid);
  color: var(--gold);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--navy-border);
}

td {
  padding: 0.625rem 1rem;
  border-bottom: 1px solid var(--navy-border);
  color: var(--text-secondary);
}

tr:hover td {
  background: var(--navy-light);
}

/* Code */
code {
  font-family: var(--mono);
  font-size: 0.8125rem;
  background: var(--navy-light);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--gold);
}

pre {
  background: var(--navy-mid);
  border: 1px solid var(--navy-border);
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-primary);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--navy-mid);
  border: 1px solid var(--navy-border);
  border-radius: 8px;
  padding: 1.5rem;
}

.card h3 {
  margin-top: 0;
  color: var(--gold);
  font-family: var(--sans);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card p {
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* Status Badges */
.badge {
  display: inline-block;
  padding: 0.2em 0.6em;
  border-radius: 3px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-operational {
  background: rgba(68, 204, 136, 0.15);
  color: var(--green-ok);
  border: 1px solid rgba(68, 204, 136, 0.3);
}

.badge-gold {
  background: rgba(200, 169, 81, 0.15);
  color: var(--gold);
  border: 1px solid rgba(200, 169, 81, 0.3);
}

/* Footer */
footer {
  padding: 2rem 0;
  border-top: 1px solid var(--navy-border);
  text-align: center;
}

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

/* Responsive */
@media (max-width: 600px) {
  .container {
    padding: 0 1rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  nav .links {
    gap: 1rem;
  }

  nav .links a {
    font-size: 0.75rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}