@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders+Display:wght@600;700;800&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --paper: #0f2847;
  --paper-2: #16345c;
  --panel: #1b3d6b;
  --panel-inset: #0a1d38;
  --line: #dfeeff;
  --line-dim: #7fa3ce;
  --line-faint: #4d6f9c;
  --mark: #6fe3ff;
  --ok: #7be3b0;
  --warn: #f4c463;
  --danger: #ff8a8a;
  --font-display: 'Big Shoulders Display', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-mono);
  background: var(--paper);
  background-image:
    linear-gradient(rgba(223, 238, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(223, 238, 255, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--line);
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
}

a { color: var(--mark); }

:focus-visible {
  outline: 2px solid var(--mark);
  outline-offset: 2px;
}

/* ---------- Reusable: corner registration marks ---------- */
.marks {
  position: relative;
  background-image:
    linear-gradient(var(--mark) 2px, transparent 2px),
    linear-gradient(90deg, var(--mark) 2px, transparent 2px),
    linear-gradient(var(--mark) 2px, transparent 2px),
    linear-gradient(90deg, var(--mark) 2px, transparent 2px),
    linear-gradient(var(--mark) 2px, transparent 2px),
    linear-gradient(90deg, var(--mark) 2px, transparent 2px),
    linear-gradient(var(--mark) 2px, transparent 2px),
    linear-gradient(90deg, var(--mark) 2px, transparent 2px);
  background-repeat: no-repeat;
  background-size:
    2px 13px, 13px 2px,
    2px 13px, 13px 2px,
    2px 13px, 13px 2px,
    2px 13px, 13px 2px;
  background-position:
    left top, left top,
    right top, right top,
    left bottom, left bottom,
    right bottom, right bottom;
}

/* ---------- Shell ---------- */
.app {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  border-right: 1px solid var(--line-faint);
  padding: 26px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.titleblock {
  padding: 14px 14px 16px;
  margin-bottom: 24px;
  border: 1px solid var(--line-faint);
}

.titleblock .doc-no {
  font-size: 10.5px;
  color: var(--line-dim);
  letter-spacing: 0.12em;
  margin: 0 0 6px;
}

.titleblock h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 30px;
  letter-spacing: 0.01em;
  margin: 0;
  line-height: 0.95;
  color: var(--line);
}

.titleblock .rev-row {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line-faint);
  font-size: 10px;
  color: var(--line-dim);
  letter-spacing: 0.05em;
}

.titleblock .rev-row .live {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--ok);
}

.titleblock .live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 2px rgba(123, 227, 176, 0.25);
}

.sheet-index-label {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--line-faint);
  margin: 0 4px 8px;
}

.nav-group { display: flex; flex-direction: column; gap: 2px; }

.nav-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-left: 2px solid transparent;
  background: transparent;
  color: var(--line-dim);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  text-align: left;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.nav-item:hover { color: var(--line); background: rgba(223, 238, 255, 0.04); }

.nav-item.active {
  color: var(--mark);
  border-left-color: var(--mark);
  background: rgba(111, 227, 255, 0.06);
}

.nav-sheet {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--line-faint);
  letter-spacing: 0.06em;
}

.nav-item.active .nav-sheet { color: var(--mark); }

/* ---------- Main ---------- */
.main {
  padding: 36px 44px 90px;
  max-width: 1120px;
}

.section-header { margin-bottom: 26px; }

.section-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mark);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin: 0 0 8px;
}

.section-header h2 {
  font-family: var(--font-display);
  font-weight: 800;
  margin: 0 0 8px;
  font-size: 34px;
  letter-spacing: 0.005em;
  color: var(--line);
}

.section-header p {
  margin: 0;
  color: var(--line-dim);
  font-size: 13px;
  max-width: 62ch;
  line-height: 1.6;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 18px;
}

.tool-card {
  --mark: #6fe3ff;
  background: var(--panel);
  border: 1px solid var(--line-faint);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.tool-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--line);
}

.tool-card .tool-hint {
  margin: -8px 0 0;
  font-size: 11.5px;
  color: var(--line-dim);
  line-height: 1.5;
}

.field-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.field-row input[type="text"],
.field-row input[type="number"] {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-faint);
  color: var(--line);
  padding: 7px 2px;
  font-size: 13.5px;
  font-family: var(--font-mono);
  flex: 1;
  min-width: 110px;
  border-radius: 0;
}

.field-row input:focus {
  outline: none;
  border-bottom-color: var(--mark);
}

.field-row input::placeholder { color: var(--line-faint); }

.check-row {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  font-size: 11.5px;
  color: var(--line-dim);
}

.check-row label {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  accent-color: var(--mark);
}

.btn {
  background: transparent;
  color: var(--mark);
  border: 1px solid var(--mark);
  padding: 9px 18px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  align-self: flex-start;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn:hover { background: var(--mark); color: var(--panel-inset); }
.btn:active { transform: translateY(1px); }

.result {
  border-top: 1px dashed var(--line-faint);
  padding-top: 12px;
  margin-top: 1px;
}

.result-empty {
  color: var(--line-faint);
  font-size: 11.5px;
  letter-spacing: 0.02em;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px 5px 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 10px;
  border: 1px solid currentColor;
}

.badge.ok { color: var(--ok); }
.badge.warn { color: var(--warn); }
.badge.danger { color: var(--danger); }
.badge.neutral { color: var(--line-dim); }

.badge-dot {
  width: 7px; height: 7px; border-radius: 50%; background: currentColor;
  box-shadow: 0 0 0 3px currentColor;
  opacity: 0.9;
}

.result pre {
  background: var(--panel-inset);
  border: 1px solid var(--line-faint);
  padding: 13px 15px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: #a9d3f5;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  max-height: 320px;
  overflow-y: auto;
}

.spinner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--line-dim);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.spinner::after {
  content: '_';
  color: var(--mark);
  animation: blink-cursor 0.9s steps(1) infinite;
}

@keyframes blink-cursor {
  50% { opacity: 0; }
}

/* ---------- Password generator special layout ---------- */
.pw-output {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pw-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel-inset);
  border: 1px solid var(--line-faint);
  padding: 11px 13px;
}

.pw-row .pw-text {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--mark);
  letter-spacing: 0.03em;
  flex: 1;
  overflow-x: auto;
  white-space: nowrap;
}

.pw-copy {
  background: transparent;
  border: 1px solid var(--line-faint);
  color: var(--line-dim);
  padding: 5px 10px;
  font-size: 10.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.pw-copy:hover { color: var(--mark); border-color: var(--mark); }

.pw-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--line-faint);
  letter-spacing: 0.03em;
}

.pw-gauge {
  display: flex;
  gap: 3px;
  flex: 1;
}

.pw-gauge-seg {
  height: 8px;
  flex: 1;
  background: var(--panel-inset);
  border: 1px solid var(--line-faint);
}

.pw-gauge-seg.filled { border-color: transparent; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    padding: 16px;
  }
  .titleblock { margin-bottom: 14px; }
  .nav-group { flex-direction: row; overflow-x: auto; gap: 4px; }
  .nav-item { white-space: nowrap; border-left: none; border-bottom: 2px solid transparent; }
  .nav-item.active { border-bottom-color: var(--mark); }
  .main { padding: 26px 18px 60px; }
  .section-header h2 { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  .spinner::after { animation: none; }
  html { scroll-behavior: auto; }
}

/* ================= Curated result components ================= */

/* --- Verdict (pass/fail) --- */
.verdict {
  display: flex;
  align-items: center;
  gap: 14px;
}

.verdict-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  border: 2px solid currentColor;
  flex-shrink: 0;
}

.verdict.ok { color: var(--ok); }
.verdict.warn { color: var(--warn); }
.verdict.danger { color: var(--danger); }

.verdict-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16.5px;
  color: var(--line);
  line-height: 1.15;
}

.verdict-sub {
  font-size: 11px;
  color: var(--line-dim);
  margin-top: 3px;
  letter-spacing: 0.01em;
}

/* --- Big stat readout --- */
.stat-row {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.stat-hero {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 40px;
  color: var(--mark);
  line-height: 1;
}

.stat-hero .stat-unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--line-dim);
  font-weight: 400;
  margin-left: 4px;
}

.stat-block { display: flex; flex-direction: column; gap: 4px; }

.stat-label {
  font-size: 10px;
  color: var(--line-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat-mini { display: flex; flex-direction: column; gap: 3px; }
.stat-mini .stat-mini-value { font-family: var(--font-mono); font-size: 15px; color: var(--line); }

/* --- Key/value grid --- */
.kv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
}

.kv-item { display: flex; flex-direction: column; gap: 2px; }

.kv-key {
  font-size: 10px;
  color: var(--line-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.kv-val {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--line);
  word-break: break-word;
}

/* --- Chips --- */
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 4px 9px;
  border: 1px solid var(--line-faint);
  color: var(--line-dim);
}

.chip.on { border-color: var(--ok); color: var(--ok); }
.chip.off { border-color: var(--line-faint); color: var(--line-faint); }
.chip.warn { border-color: var(--warn); color: var(--warn); }

/* --- Table rows (ports, hops) --- */
.row-table { display: flex; flex-direction: column; gap: 1px; }

.row-table .r {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(223, 238, 255, 0.06);
  font-size: 12.5px;
}

.row-table .r-idx { color: var(--line-faint); font-size: 11px; }
.row-table .r-main { color: var(--line); }
.row-table .r-side { color: var(--line-dim); font-size: 11.5px; text-align: right; }

.status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 6px; }
.status-dot.ok { background: var(--ok); }
.status-dot.warn { background: var(--warn); }
.status-dot.danger { background: var(--danger); }
.status-dot.neutral { background: var(--line-faint); }

/* --- Speed gauge --- */
.gauge-needle {
  transition: transform 0.22s ease-out;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.gauge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding-top: 4px;
}

.gauge-svg { width: 210px; height: auto; }
.gauge-tick { fill: var(--line-faint); font-family: var(--font-mono); font-size: 9px; }

.gauge-value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 34px;
  color: var(--mark);
  margin-top: -14px;
}

.gauge-unit {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--line-dim);
  margin-left: 4px;
}

.gauge-caption {
  font-size: 10px;
  color: var(--line-faint);
  letter-spacing: 0.14em;
  margin-bottom: 6px;
}

.speed-stats {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px dashed var(--line-faint);
  padding-top: 12px;
}

.speed-stat { display: flex; flex-direction: column; gap: 3px; }
.speed-stat-label { font-size: 9.5px; color: var(--line-faint); letter-spacing: 0.08em; text-transform: uppercase; }
.speed-stat-value { font-family: var(--font-mono); font-size: 13px; color: var(--line); }