/* PcapLM design system — dark terminal aesthetic */

:root {
  --bg: #0a0d0f;
  --bg-raised: #11161a;
  --bg-inset: #05070a;
  --border: #1f2a30;
  --border-bright: #2c3a42;
  --text: #d7e2e6;
  --text-dim: #8a9aa2;
  --text-faint: #566268;
  --accent: #37f0a3;
  --accent-dim: #1f8f63;
  --accent-bg: rgba(55, 240, 163, 0.1);
  --sev-critical: #ff5d5d;
  --sev-high: #ff9d3d;
  --sev-medium: #ffd23d;
  --sev-low: #6fb3ff;
  --font-display: "Syne", sans-serif;
  --font-serif: "Instrument Serif", serif;
  --font-mono: "JetBrains Mono", monospace;
  --radius: 6px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
}

body {
  min-height: 100vh;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
  background-position: center;
  background-color: var(--bg);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(10,13,15,0) 0%, var(--bg) 75%);
  pointer-events: none;
  z-index: 0;
}

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em 0;
  color: #fff;
}

h1 { font-size: 2.6rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.2rem; }

.serif {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
}

p { margin: 0 0 1em 0; color: var(--text-dim); }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Nav */
nav.topnav {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 13, 15, 0.85);
  backdrop-filter: blur(8px);
}
nav.topnav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand .dot { color: var(--accent); }
.navlinks { display: flex; gap: 28px; align-items: center; }
.navlinks a { color: var(--text-dim); font-size: 0.9rem; }
.navlinks a:hover { color: var(--text); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-bright);
  background: var(--bg-raised);
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}
.btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #061410;
  font-weight: 700;
}
.btn-primary:hover { background: #52f5b3; color: #061410; box-shadow: 0 0 24px rgba(55,240,163,0.35); }
.btn-block { width: 100%; }
.btn-danger { border-color: var(--sev-critical); color: var(--sev-critical); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Cards */
.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

/* Forms */
label { display: block; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 6px; }
input, textarea, select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  background: var(--bg-inset);
  border: 1px solid var(--border-bright);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius);
  outline: none;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
.field { margin-bottom: 18px; }

/* Badges */
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 100px;
  border: 1px solid currentColor;
}
.badge.critical { color: var(--sev-critical); }
.badge.high { color: var(--sev-high); }
.badge.medium { color: var(--sev-medium); }
.badge.low { color: var(--sev-low); }

.pill {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-dim);
  border: 1px solid var(--border-bright);
  border-radius: 100px;
  padding: 3px 10px;
  font-family: var(--font-mono);
}

/* Utility */
.muted { color: var(--text-faint); }
.mono { font-family: var(--font-mono); }
.center { text-align: center; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; gap: 16px; align-items: center; }
.between { justify-content: space-between; }
.wrap { flex-wrap: wrap; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 800px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.error-msg {
  color: var(--sev-critical);
  font-size: 0.85rem;
  margin-top: 8px;
  min-height: 1.2em;
}
.success-msg {
  color: var(--accent);
  font-size: 0.85rem;
  margin-top: 8px;
  min-height: 1.2em;
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border-bright);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 80px;
  color: var(--text-faint);
  font-size: 0.85rem;
  position: relative;
  z-index: 1;
}