/* =============================================================================
   TRONEXUS — Stylesheet
   Theme: Deep Space / Federation Computing
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=DM+Mono:ital,wght@0,300;0,400;0,500;1,300&family=Inter:wght@300;400;500;600&display=swap');

/* Variables */
:root {
  --bg:          #070b16;
  --bg2:         #0c1220;
  --bg3:         #111827;
  --border:      #1a2744;
  --border2:     #243050;
  --cyan:        #00d4ff;
  --cyan2:       #00ffcc;
  --blue:        #0ea5e9;
  --blue2:       #3b82f6;
  --text:        #e8f0ff;
  --text2:       #8899cc;
  --text3:       #4a5a80;
  --warning:     #f59e0b;
  --success:     #10b981;
  --font-display: 'Orbitron', monospace;
  --font-mono:    'DM Mono', monospace;
  --font-body:    'Inter', sans-serif;
  --glow-cyan:   0 0 20px rgba(0, 212, 255, 0.4);
  --glow-blue:   0 0 20px rgba(14, 165, 233, 0.3);
  --radius:      6px;
  --radius-lg:   12px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* Star field background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(0,212,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 80% 10%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 60%, rgba(0,212,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 10% 80%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 50%, rgba(255,255,255,0.15) 0%, transparent 100%),
    radial-gradient(1px 1px at 35% 90%, rgba(0,212,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 75%, rgba(255,255,255,0.2) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

/* Grid overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── NAV ──────────────────────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(7,11,22,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-brand img { width: 36px; height: 36px; }

.nav-brand span {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.12em;
  text-shadow: var(--glow-cyan);
}

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

.nav-links a {
  color: var(--text2);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  font-family: var(--font-mono);
}

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

.nav-cta {
  background: transparent;
  border: 1px solid var(--cyan);
  color: var(--cyan) !important;
  padding: 6px 16px;
  border-radius: var(--radius);
  transition: background 0.2s, box-shadow 0.2s !important;
}

.nav-cta:hover {
  background: rgba(0,212,255,0.1) !important;
  box-shadow: var(--glow-cyan) !important;
}

/* ── LAYOUT ──────────────────────────────────────────────────────────────── */
main {
  position: relative;
  z-index: 1;
  padding-top: 64px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

section { padding: 5rem 0; }

/* ── HERO ─────────────────────────────────────────────────────────────────── */
.hero {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 4rem 0;
}

.hero-glow {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.3);
  border-radius: 100px;
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 0%, #00d4ff 50%, #00ffcc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 1.25rem;
  color: var(--text2);
  max-width: 600px;
  margin: 0 auto 3rem;
  font-weight: 300;
}

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

/* ── BUTTONS ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--blue2));
  color: #000;
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(0,212,255,0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border2);
}

.btn-secondary:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0,212,255,0.05);
}

/* ── INSTALL STRIP ────────────────────────────────────────────────────────── */
.install-strip {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

.install-cmd {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.install-cmd code {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan2);
  background: rgba(0,255,204,0.05);
  border: 1px solid rgba(0,255,204,0.2);
  padding: 10px 24px;
  border-radius: var(--radius);
}

.install-cmd .copy-btn {
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text2);
  padding: 10px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  transition: all 0.2s;
}

.install-cmd .copy-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ── SECTION HEADINGS ─────────────────────────────────────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text2);
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: 3rem;
}

/* ── FEATURES GRID ────────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.feature-card:hover {
  border-color: var(--border2);
  transform: translateY(-2px);
}

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

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.25rem;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text2);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ── HARDWARE SECTION ─────────────────────────────────────────────────────── */
.hw-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.hw-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.hw-card .hw-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.hw-card .hw-value {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--cyan);
}

/* ── STACK DIAGRAM ────────────────────────────────────────────────────────── */
.stack-diagram {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text2);
  overflow-x: auto;
}

.stack-diagram .layer {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.5rem;
  align-items: center;
}

.stack-diagram .layer-label {
  color: var(--text3);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  min-width: 80px;
  text-transform: uppercase;
}

.stack-badge {
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  color: var(--cyan);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  white-space: nowrap;
}

.stack-badge.green {
  background: rgba(16,185,129,0.08);
  border-color: rgba(16,185,129,0.3);
  color: var(--success);
}

.stack-badge.yellow {
  background: rgba(245,158,11,0.08);
  border-color: rgba(245,158,11,0.3);
  color: var(--warning);
}

.stack-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1rem 0;
}

/* ── DOCS LAYOUT ──────────────────────────────────────────────────────────── */
.docs-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 3rem;
  align-items: start;
  padding-top: 2rem;
}

.docs-sidebar {
  position: sticky;
  top: 80px;
}

.docs-sidebar nav { position: static; background: none; border: none; padding: 0; height: auto; display: block; }

.sidebar-section {
  margin-bottom: 2rem;
}

.sidebar-section-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-links a {
  display: block;
  padding: 6px 10px;
  color: var(--text2);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 4px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}

.sidebar-links a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.03);
  border-left-color: var(--border2);
}

.sidebar-links a.active {
  color: var(--cyan);
  background: rgba(0,212,255,0.06);
  border-left-color: var(--cyan);
}

/* ── DOCS CONTENT ─────────────────────────────────────────────────────────── */
.docs-content h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.docs-content .page-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text3);
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.docs-content h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
  margin: 3rem 0 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.docs-content h2:first-of-type { border-top: none; padding-top: 0; margin-top: 0; }

.docs-content h3 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--cyan);
  margin: 2rem 0 0.75rem;
  letter-spacing: 0.04em;
}

.docs-content p {
  color: var(--text2);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.docs-content ul, .docs-content ol {
  color: var(--text2);
  font-size: 0.95rem;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.docs-content li { margin-bottom: 0.4rem; }

.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.15);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--cyan2);
}

.docs-content pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  position: relative;
}

.docs-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  color: var(--text2);
}

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

.config-table th {
  background: var(--bg2);
  color: var(--text3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-weight: 500;
}

.config-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text2);
  vertical-align: top;
}

.config-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan2);
  white-space: nowrap;
}

.config-table tr:last-child td { border-bottom: none; }
.config-table tr:hover td { background: rgba(255,255,255,0.015); }

/* Alert boxes */
.alert {
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  border-left: 3px solid;
}

.alert-info {
  background: rgba(14,165,233,0.08);
  border-color: var(--blue);
  color: var(--text2);
}

.alert-warning {
  background: rgba(245,158,11,0.08);
  border-color: var(--warning);
  color: var(--text2);
}

.alert-success {
  background: rgba(16,185,129,0.08);
  border-color: var(--success);
  color: var(--text2);
}

.alert strong { color: var(--text); }

/* ── FAQ ──────────────────────────────────────────────────────────────────── */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: var(--bg2);
  border: none;
  color: var(--text);
  padding: 1.25rem 1.5rem;
  text-align: left;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.15s;
  font-family: var(--font-body);
}

.faq-question:hover { background: var(--bg3); }

.faq-question .arrow {
  color: var(--cyan);
  transition: transform 0.2s;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.faq-item.open .arrow { transform: rotate(45deg); }

.faq-answer {
  display: none;
  padding: 1.25rem 1.5rem;
  color: var(--text2);
  font-size: 0.9rem;
  line-height: 1.7;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.faq-item.open .faq-answer { display: block; }

/* ── FOOTER ───────────────────────────────────────────────────────────────── */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  margin-top: 4rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.footer-brand img { width: 28px; height: 28px; }

.footer-brand span {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.1em;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text3);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--text2); }

.footer-copy {
  color: var(--text3);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* ── UTILITIES ────────────────────────────────────────────────────────────── */
.text-cyan { color: var(--cyan); }
.text-mono { font-family: var(--font-mono); }
.mt-0 { margin-top: 0; }
.mb-2 { margin-bottom: 2rem; }

/* Horizontal rule */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

/* ── RESPONSIVE ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { display: none; }
  .hero h1 { font-size: 2.2rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}