/* StegVerse shared design system — v2 */
/* Matches stegfinco.html aesthetic: dark navy, not pure black */

:root {
  --bg:        #0b0f1a;
  --surface:   #111827;
  --surface2:  #1a2235;
  --border:    #1e2d45;
  --border2:   #243450;
  --text:      #f0f4ff;
  --muted:     #7a8aaa;
  --dim:       #4a5878;
  --accent:    #4db8ff;
  --accent2:   #7dd3fc;
  --green:     #34d399;
  --green-bg:  #0a2318;
  --green-bd:  #1a4030;
  --yellow:    #fbbf24;
  --yellow-bg: #1c1500;
  --red:       #f87171;
  --grad-a:    #67e8f9;  /* cyan */
  --grad-b:    #a78bfa;  /* violet */
  --grad-c:    #34d399;  /* green */
  --mono:      'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
  --radius:    8px;
  --radius-sm: 4px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── LAYOUT ── */
.sv-wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

/* ── NAV ── */
.sv-nav {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(11,15,26,0.95);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
  flex-wrap: wrap;
}
.sv-nav-brand {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  padding: 16px 20px 16px 0;
  margin-right: 8px;
  border-right: 1px solid var(--border);
}
.sv-nav a:not(.sv-nav-brand) {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  padding: 16px 12px;
  transition: color 0.15s;
  white-space: nowrap;
}
.sv-nav a:not(.sv-nav-brand):hover,
.sv-nav a.active { color: var(--text); }

/* ── HERO ── */
.sv-hero {
  padding: 64px 0 48px;
}
.sv-eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 14px;
}
.sv-hero h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--text);
}
.sv-hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--grad-a), var(--grad-b));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.sv-hero p {
  font-size: 16px;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ── BUTTONS ── */
.sv-btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.sv-btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.1s;
  cursor: pointer;
  border: none;
}
.sv-btn:hover { opacity: 0.88; transform: translateY(-1px); }
.sv-btn-primary {
  background: linear-gradient(135deg, var(--grad-a), var(--grad-b));
  color: #0b0f1a;
}
.sv-btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border2);
}
.sv-btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

/* ── SECTION HEADINGS ── */
h2.sv-h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 48px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
h3.sv-h3 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin: 24px 0 10px;
}

/* ── PROSE ── */
.sv-prose p {
  color: #c8d4e8;
  margin-bottom: 14px;
  line-height: 1.7;
}
.sv-prose a { color: var(--accent); text-decoration: none; }
.sv-prose a:hover { text-decoration: underline; }

/* ── CARDS ── */
.sv-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
}
.sv-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

/* ── EVIDENCE BLOCK ── */
.sv-evidence {
  background: #0c1a12;
  border: 1px solid var(--green-bd);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 24px;
}
.sv-evidence-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-bottom: 12px;
  font-weight: 600;
}
.sv-evidence-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 6px 0;
  border-bottom: 1px solid #132215;
  font-size: 13px;
  gap: 12px;
}
.sv-evidence-row:last-child { border-bottom: none; }
.sv-evidence-row .k { color: var(--muted); flex-shrink: 0; }
.sv-evidence-row .v { font-family: var(--mono); font-size: 11px; color: var(--green); text-align: right; }

/* ── STATUS PILLS ── */
.pill {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--mono);
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.pill-green  { background: var(--green-bg); color: var(--green);  border: 1px solid var(--green-bd); }
.pill-blue   { background: #071828;         color: var(--accent); border: 1px solid #0e2a45; }
.pill-yellow { background: #1c1800;         color: var(--yellow); border: 1px solid #3a3000; }
.pill-muted  { background: var(--surface2); color: var(--dim);    border: 1px solid var(--border); }

/* ── TABLES ── */
.sv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-bottom: 24px;
}
.sv-table th {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
.sv-table td {
  padding: 9px 12px;
  border-bottom: 1px solid #131d2e;
  vertical-align: top;
  color: #c8d4e8;
}
.sv-table tr:last-child td { border-bottom: none; }
.sv-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ── CODE / PRE ── */
code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  color: var(--accent2);
}
pre {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border2);
  border-radius: var(--radius);
  padding: 16px 18px;
  overflow-x: auto;
  line-height: 1.6;
  margin-bottom: 20px;
  color: #c8d4e8;
}

/* ── BOUNDARY NOTICE ── */
.sv-boundary {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--dim);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* ── STAT GRID ── */
.sv-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}
.sv-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.sv-stat .num {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
}
.sv-stat .lbl {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
}

/* ── STAGE ROWS ── */
.sv-stage-list { margin-bottom: 24px; }
.sv-stage {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid #131d2e;
}
.sv-stage:last-child { border-bottom: none; }
.sv-stage-id {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  min-width: 82px;
  padding-top: 3px;
  flex-shrink: 0;
}
.sv-stage-body { flex: 1; }
.sv-stage-name { font-size: 14px; color: var(--text); margin-bottom: 3px; }
.sv-stage-stop { font-size: 11px; color: var(--muted); }

/* ── FOOTER ── */
.sv-footer {
  margin-top: 80px;
  padding: 24px 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--dim);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.sv-footer a { color: var(--muted); text-decoration: none; }
.sv-footer a:hover { color: var(--text); }

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .sv-nav { gap: 0; }
  .sv-nav a:not(.sv-nav-brand) { padding: 12px 8px; font-size: 12px; }
  .sv-hero h1 { font-size: 26px; }
  .sv-btn-row { flex-direction: column; }
  .sv-btn { text-align: center; }
  .sv-evidence-row { flex-direction: column; gap: 2px; }
  .sv-evidence-row .v { text-align: left; }
}