/* layout.css — global layout, bg, navbar, shared utils */

/* ── Body ── */
body {
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── Background grid ── */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(0,245,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,245,255,0.035) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* ── Scanlines ── */
.bg-scan {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 2px,
    rgba(0,245,255,0.012) 2px, rgba(0,245,255,0.012) 4px
  );
}

/* ── Cursor glow ── */
.cursor-glow {
  position: fixed;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,245,255,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 2;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
  will-change: transform;
}

/* ── Container ── */
.container {
  position: relative; z-index: 10;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}

/* ── Section shared ── */
.section-header { margin-bottom: 2.5rem; }
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan);
  margin-bottom: 0.5rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-1);
}
.section-sub {
  font-size: 0.82rem;
  color: var(--text-3);
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem; letter-spacing: 0.12em;
  padding: 10px 22px;
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  background: rgba(0,245,255,0.08);
  color: var(--cyan);
  transition: all var(--dur) var(--ease);
}
.btn-primary:hover {
  background: rgba(0,245,255,0.18);
  box-shadow: 0 0 20px rgba(0,245,255,0.3);
  transform: translateY(-2px);
}
.btn-secondary {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem; letter-spacing: 0.1em;
  padding: 10px 22px;
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-2);
  transition: all var(--dur) var(--ease);
}
.btn-secondary:hover {
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 14px rgba(57,255,20,0.2);
  transform: translateY(-2px);
}

/* ── Blink cursor ── */
.blink { animation: blink 1.1s step-end infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ── Skeleton loader ── */
@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position:  400px 0; }
}
.skeleton {
  background: linear-gradient(90deg,
    var(--bg-card) 25%,
    rgba(0,245,255,0.05) 50%,
    var(--bg-card) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.6s infinite;
}

/* ── Fade-in on scroll ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Navbar ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  height: 60px;
  display: flex; align-items: center;
  background: rgba(3,6,9,0.7);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.navbar.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; max-width: var(--max-w); margin: 0 auto;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 900; letter-spacing: 0.1em;
  color: var(--cyan);
  text-shadow: 0 0 16px rgba(0,245,255,0.5);
}
.nav-links {
  display: flex; align-items: center; gap: 2rem;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-2);
  transition: color var(--dur);
}
.nav-links a:hover { color: var(--cyan); }
.nav-gh {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  color: var(--cyan) !important;
  transition: all var(--dur) !important;
}
.nav-gh:hover {
  background: rgba(0,245,255,0.1);
  box-shadow: 0 0 12px rgba(0,245,255,0.25);
}
/* Hamburger */
.nav-ham {
  display: none; flex-direction: column; gap: 5px;
  width: 28px; padding: 4px;
}
.nav-ham span {
  display: block; height: 2px; border-radius: 2px;
  background: var(--cyan);
  transition: all 0.2s;
}
.nav-ham.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-ham.open span:nth-child(2) { opacity: 0; }
.nav-ham.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 60px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(3,6,9,0.97);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    transform: translateY(-110%);
    transition: transform 0.3s var(--ease);
    z-index: 800;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links li { width: 100%; text-align: center; }
  .nav-links a { display: block; padding: 0.75rem 0; }
  .nav-ham { display: flex; }
}

/* ── Neon divider ── */
.neon-line {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  margin: 0.75rem 0 1.5rem;
  box-shadow: 0 0 8px var(--cyan);
}