/* ============================================================
   OVIOS LINUX — GLOBAL STYLES
   ============================================================ */

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

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

html { scroll-behavior: smooth; }

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

/* ── Typography ─────────────────────────────────────────── */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  color:       var(--text-primary);
  line-height: 1.15;
  font-weight: 700;
}
h1 { font-size: clamp(2.6rem, 5.5vw, 4.2rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.8rem); letter-spacing: -0.015em; }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.05rem; font-weight: 600; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

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

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

pre {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
}

/* ── Layout Utilities ───────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

.section {
  padding: var(--section-pad) 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-primary);
  display: block;
  margin-bottom: 0.75rem;
}

.section-heading {
  margin-bottom: 1rem;
}

.section-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 1000px;
  margin-bottom: 3rem;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}
.btn-primary:hover {
  background: var(--brand-primary-dim);
  border-color: var(--brand-primary-dim);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-default);
}
.btn-outline:hover {
  background: var(--bg-elevated);
  border-color: var(--border-strong);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-accent);
  border-color: transparent;
  padding-left: 0;
}
.btn-ghost:hover {
  color: var(--brand-secondary);
}

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background:    var(--bg-surface);
  border:        1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding:       1.75rem;
  transition:    border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  border-color: var(--border-strong);
  transform:    translateY(-3px);
  box-shadow:   var(--shadow-glow);
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--brand-primary-glow);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
  font-size: 1.2rem;
}

.card h4 {
  color: var(--brand-primary);
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

/* ── Badge / Tag ────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3em 0.75em;
  border-radius: 100px;
  border: 1px solid;
}
.badge-blue   { color: var(--brand-primary);   border-color: var(--brand-primary);   background: rgba(59,158,255,0.08); }
.badge-teal   { color: var(--brand-secondary); border-color: var(--brand-secondary); background: rgba(0,224,199,0.08); }
.badge-orange { color: var(--brand-warning);   border-color: var(--brand-warning);   background: rgba(255,184,48,0.08); }

/* ── Divider ────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-default), transparent);
  border: none;
  margin: 0;
}

/* ── Spec Grid ──────────────────────────────────────────── */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.spec-cell {
  background: var(--bg-surface);
  padding: 1.25rem 1.5rem;
}
.spec-cell .label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--brand-primary);
  display: block;
  margin-bottom: 0.35rem;
}
.spec-cell .value {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* ── Navbar ─────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}
.navbar.scrolled {
  background: rgba(8,12,18,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border-subtle);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-logo span { color: var(--brand-primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active { color: var(--text-primary); }
.nav-cta { margin-left: 1rem; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* ── Footer ─────────────────────────────────────────────── */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 3.5rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 280px;
  margin-top: 0.75rem;
}
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.footer-col ul a:hover { color: var(--text-primary); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ── Canvas Background ──────────────────────────────────── */
#bg-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* ── Scroll Reveal ──────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Glow Line Accent ───────────────────────────────────── */
.glow-line {
  width: 60px;
  height: 3px;
  background: var(--brand-primary);
  border-radius: 2px;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 12px var(--brand-primary);
}

/* ── Terminal Block ─────────────────────────────────────── */
.terminal {
  background: #050a10;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-family: var(--font-mono);
}
.terminal-bar {
  background: var(--bg-elevated);
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}
.terminal-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.terminal-body {
  padding: 1.25rem 1.5rem;
  font-size: 0.82rem;
  line-height: 0.8;
  color: #7ec8a0;
  white-space: pre-wrap;
  overflow-x: auto;
}
.terminal-body .cmd { color: var(--brand-primary); }
.terminal-body .out { color: var(--text-secondary); }
.terminal-body .highlight { color: var(--brand-secondary); }
.terminal-body img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
}

/* ── Hero Terminal Image Blend ──────────────────────────── */
.hero-terminal .terminal {
  background: transparent;
  border: none;
  border-radius: 0;
}
.hero-terminal .terminal-bar {
  display: none;
}
.hero-terminal .terminal-body {
  padding: 1rem;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}