/* ==========================================================================
   GOBZ Portfolio — Design System
   Palette sampled from the GOBZ mark: near-black navy + single cyan accent.
   Structural text (nav, labels, headings) = JetBrains Mono.
   Reading text (descriptions, paragraphs) = Inter.
   ========================================================================== */

:root {
  --bg: #05131e;
  --bg-elevated: #0a1f2e;
  --bg-elevated-2: #0d2735;
  --accent: #00d1e0;
  --accent-dim: #0a4a53;
  --accent-soft: rgba(0, 209, 224, 0.12);
  --text: #e8f4f6;
  --text-muted: #7c96a3;
  --text-faint: #3f5866;
  --danger: #e0554d;
  --border: #123545;

  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1180px;
  --radius: 3px;
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Faint circuit-grid backdrop, applied to the whole page */
body {
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  background-attachment: fixed;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(0, 209, 224, 0.06), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

img {
  max-width: 100%;
  display: block;
}

h1, h2, h3, h4 {
  font-family: var(--font-mono);
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Layout shells ---------- */

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

/* ---------- Top nav ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(5, 19, 30, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}

.brand img {
  height: 22px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
}

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

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 13px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.btn:hover {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 24px rgba(0, 209, 224, 0.35);
}

.btn-solid {
  background: var(--accent);
  color: var(--bg);
}

.btn-solid:hover {
  background: var(--accent);
  filter: brightness(1.1);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text-muted);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
  box-shadow: none;
}

.btn-danger {
  border-color: var(--danger);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger);
  color: var(--bg);
  box-shadow: 0 0 24px rgba(224, 85, 77, 0.3);
}

/* ---------- Eyebrow / labels ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--accent);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  margin-top: 80px;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}

/* ---------- Scrollbar (webkit) ---------- */

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-dim);
}