:root {
  --ink: #17181A;
  --panel: #212428;
  --panel-raised: #292D32;
  --steel: #4A5058;
  --hairline: #363A40;
  --paper: #ECE9E1;
  --paper-dim: #9B9992;
  --signal: #E8A628;
  --signal-dim: #7A5A1E;
  --rust: #C1522F;
  --ok: #6F9E6A;
  --radius: 14px;
  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: contain;
}

body {
  min-height: 100dvh;
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
  padding-top: env(safe-area-inset-top);
}

@media (prefers-reduced-motion: no-preference) {
  .tab { transition: opacity .18s ease; }
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px 12px;
  background: linear-gradient(180deg, var(--panel), var(--ink));
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.14em;
  margin: 0;
  color: var(--paper);
  flex: 1;
}
.plate-mark {
  position: relative;
  width: 22px;
  height: 22px;
  border: 2px solid var(--signal);
  border-radius: 4px;
  flex-shrink: 0;
}
.plate-mark .rivet {
  position: absolute;
  width: 3px; height: 3px;
  background: var(--signal);
  border-radius: 50%;
}
.plate-mark .tl { top: 2px; left: 2px; }
.plate-mark .tr { top: 2px; right: 2px; }
.plate-mark .bl { bottom: 2px; left: 2px; }
.plate-mark .br { bottom: 2px; right: 2px; }
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(111,158,106,0.15);
}
.status-dot.offline { background: var(--paper-dim); box-shadow: none; }

/* ---------- layout ---------- */
main#app { padding: 16px 16px 8px; max-width: 560px; margin: 0 auto; }
.tab.hidden { display: none; }
.section-heading {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-dim);
  margin: 26px 4px 10px;
}
.section-heading.no-top { margin-top: 0; }
.muted { color: var(--paper-dim); font-size: 13.5px; line-height: 1.5; }

/* ---------- data-plate card ---------- */
.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 18px 16px;
  margin-bottom: 16px;
}
.card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: calc(var(--radius) - 6px);
  pointer-events: none;
}

/* ---------- form fields ---------- */
.field-label {
  display: block;
  font-family: var(--font-display);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-dim);
  margin: 14px 0 6px;
}
.field-label .opt {
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--steel);
}
.number-input {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 16px 14px;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--signal);
  text-align: center;
}
.number-input:focus, .text-input:focus, .select-input:focus {
  outline: none;
  border-color: var(--signal);
}
.text-input, .select-input {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 11px 12px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--paper);
}
textarea.text-input { resize: vertical; font-family: var(--font-body); }
input[type=file] { color: var(--paper-dim); font-size: 13px; margin-top: 6px; width: 100%; }

.field-row.toggles { display: flex; gap: 18px; margin-top: 16px; flex-wrap: wrap; }
.switch-row { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--paper-dim); }
.switch-row input { accent-color: var(--signal); width: 17px; height: 17px; }

/* ---------- resolve preview ---------- */
.resolve-preview {
  margin-top: 14px;
  border-radius: 10px;
  padding: 12px 14px;
  border: 1px dashed var(--hairline);
  font-size: 13.5px;
}
.resolve-preview.empty { color: var(--steel); }
.resolve-preview.match {
  border: 1px solid var(--signal-dim);
  background: rgba(232,166,40,0.07);
}
.resolve-preview.nomatch {
  border: 1px solid var(--rust);
  background: rgba(193,82,47,0.08);
}
.rp-class {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--signal);
  letter-spacing: 0.02em;
}
.rp-meta { color: var(--paper-dim); font-size: 12.5px; margin-top: 3px; }
.rp-hint { color: var(--steel); }

/* ---------- buttons ---------- */
.btn-primary {
  width: 100%;
  margin-top: 18px;
  padding: 15px;
  border-radius: 10px;
  border: none;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.08em;
}
.btn-primary:disabled { background: var(--steel); color: var(--paper-dim); }
.btn-secondary {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--hairline);
  background: var(--panel-raised);
  color: var(--paper);
  font-size: 13.5px;
  font-weight: 600;
}
.btn-danger {
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--rust);
  background: transparent;
  color: var(--rust);
  font-weight: 600;
  font-size: 13.5px;
}
.btn-back {
  background: none; border: none;
  color: var(--signal);
  font-family: var(--font-display);
  letter-spacing: 0.06em;
  font-size: 14px;
  padding: 6px 2px 16px;
}
.btn-row { display: flex; gap: 10px; margin: 10px 0 4px; }
.log-feedback { min-height: 18px; font-size: 12.5px; color: var(--ok); margin-top: 10px; }
.log-feedback.err { color: var(--rust); }

/* ---------- recent / roster lists ---------- */
.recent-list, .roster-list { list-style: none; margin: 0; padding: 0; }
.encounter-row, .roster-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 8px;
}
.roster-row { cursor: pointer; }
.row-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 16px;
  color: var(--signal);
  min-width: 92px;
}
.row-main { flex: 1; min-width: 0; }
.row-class { font-size: 13.5px; color: var(--paper); }
.row-sub { font-size: 12px; color: var(--paper-dim); margin-top: 2px; }
.row-count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper-dim);
  background: var(--ink);
  border-radius: 6px;
  padding: 3px 8px;
}
.empty-state { color: var(--steel); font-size: 13.5px; padding: 20px 4px; text-align: center; }

.roster-controls { display: flex; gap: 8px; margin-bottom: 14px; }

/* ---------- unit detail ---------- */
.unit-head {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--signal);
  letter-spacing: 0.04em;
}
.unit-class { font-family: var(--font-display); font-size: 15px; color: var(--paper-dim); margin: 2px 0 18px; }
.history-row { border-left: 2px solid var(--hairline); padding: 4px 0 4px 14px; margin-bottom: 10px; font-size: 13px; }
.history-time { font-family: var(--font-mono); color: var(--paper); }
.history-loc { color: var(--paper-dim); font-size: 12px; }
.history-note { color: var(--paper-dim); font-size: 12.5px; margin-top: 2px; font-style: italic; }

/* ---------- stats ---------- */
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 8px; }
.stat-tile {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 16px;
}
.stat-num { font-family: var(--font-mono); font-size: 26px; font-weight: 700; color: var(--signal); }
.stat-label { font-size: 11.5px; color: var(--paper-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 4px; }

.bar-item { margin-bottom: 12px; }
.bar-head { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 5px; }
.bar-track { background: var(--panel); border-radius: 6px; height: 8px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--signal); }

.top-list { list-style: none; margin: 0; padding: 0; counter-reset: rank; }
.top-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--panel); border: 1px solid var(--hairline);
  border-radius: 10px; padding: 12px 14px; margin-bottom: 8px;
}
.top-rank {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink);
  background: var(--signal);
  width: 26px; height: 26px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.danger-zone { border-color: rgba(193,82,47,0.35); }

/* ---------- tab bar ---------- */
.tabbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  display: flex;
  background: var(--panel);
  border-top: 1px solid var(--hairline);
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 20;
}
.tabbtn {
  flex: 1;
  background: none; border: none;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 10px 0 8px;
  color: var(--paper-dim);
  font-family: var(--font-display);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.tabbtn .ticon { font-size: 17px; }
.tabbtn.active { color: var(--signal); }

@media (min-width: 640px) {
  main#app { padding-top: 24px; }
}