/* RAVEN OS — Ecotone dark. Charcoal #231F20 + silver. NO gold. */
:root {
  --charcoal: #231F20;
  --charcoal-2: #2B2728;
  --charcoal-3: #363132;
  --silver: #C9CCD1;
  --silver-dim: #8E9196;
  --silver-faint: #55575B;
  --line: #3D3839;
  --green: #4CAF6E;
  --orange: #E8963C;
  --red: #E05A4E;
  --blue: #4E9BE0;
  --font-body: -apple-system, BlinkMacSystemFont, "Roboto", "Segoe UI", sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, monospace;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; }
body {
  background: var(--charcoal);
  color: var(--silver);
  font-family: var(--font-body);
  font-size: 15px;
  overscroll-behavior-y: none;
}
.hidden { display: none !important; }

/* ---------- gate ---------- */
.gate {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  background: var(--charcoal);
}
.gate-box { display: flex; flex-direction: column; align-items: center; gap: 14px; width: 260px; }
.gate-icon { width: 84px; height: 84px; border-radius: 20px; }
.gate-title { font-size: 22px; letter-spacing: 0.28em; font-weight: 600; }
.gate-sub { color: var(--silver-dim); font-size: 13px; }
.gate input {
  width: 100%; padding: 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--charcoal-2);
  color: var(--silver); font-size: 16px; text-align: center;
}
.gate-err { color: var(--red); font-size: 13px; min-height: 18px; }

/* ---------- topbar ---------- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  padding: calc(var(--safe-top) + 10px) 14px 10px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(35,31,32,0.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { letter-spacing: 0.22em; font-weight: 600; font-size: 15px; }
.badge {
  margin-left: 8px; padding: 2px 7px; border-radius: 6px; font-size: 10px;
  letter-spacing: 0.08em; border: 1px solid var(--line); color: var(--silver-dim);
  vertical-align: 2px;
}
.badge.demo { color: var(--orange); border-color: var(--orange); }
.badge.live { color: var(--green); border-color: var(--green); }
.stamp { color: var(--silver-dim); font-size: 11px; font-family: var(--font-mono); }
.iconbtn {
  background: none; border: none; color: var(--silver-dim);
  font-size: 18px; padding: 4px 6px; cursor: pointer;
}

/* ---------- view ---------- */
.view {
  padding: calc(var(--safe-top) + 58px) 12px calc(var(--safe-bottom) + 74px);
  max-width: 760px; margin: 0 auto;
}
h2.panel-title {
  font-size: 12px; letter-spacing: 0.18em; color: var(--silver-dim);
  margin: 18px 2px 8px; font-weight: 600;
}
.card {
  background: var(--charcoal-2); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px; margin-bottom: 10px;
}
.muted { color: var(--silver-dim); }
.mono { font-family: var(--font-mono); font-size: 12px; }
.small { font-size: 12px; }

/* status lights */
.light { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; flex: none; }
.light.green { background: var(--green); }
.light.orange { background: var(--orange); }
.light.red { background: var(--red); }
.light.grey { background: var(--silver-faint); }
.light.blue { background: var(--blue); animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.25; } }

/* banner */
.banner {
  border-radius: 10px; padding: 10px 12px; margin-bottom: 12px;
  font-size: 13px; border: 1px solid;
}
.banner.red { color: #F2B0AA; border-color: var(--red); background: rgba(224,90,78,0.10); }
.banner.orange { color: #F2CBA0; border-color: var(--orange); background: rgba(232,150,60,0.10); }
.banner.info { color: var(--silver-dim); border-color: var(--line); background: var(--charcoal-2); }

/* headline band */
.band-headline { font-size: 20px; font-weight: 600; }
.band-note { color: var(--silver-dim); font-size: 11px; margin-top: 4px; }

/* fleet summary chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 2px 10px; }
.chip {
  display: inline-flex; align-items: center; padding: 4px 10px 4px 8px;
  border: 1px solid var(--line); border-radius: 999px;
  font-size: 11px; letter-spacing: 0.06em; color: var(--silver-dim);
  font-family: var(--font-mono);
}
.chip .light { margin-right: 6px; width: 8px; height: 8px; }

/* engine card */
.eng-head { display: flex; align-items: center; gap: 4px; }
.eng-name { font-weight: 600; font-size: 14px; flex: 1; min-width: 0; }
.eng-age { color: var(--silver-dim); font-size: 11px; font-family: var(--font-mono); flex: none; }
.eng-status { margin: 6px 0 2px; font-size: 13px; word-wrap: break-word; }
.eng-line { color: var(--silver); font-size: 13px; margin-top: 4px; word-wrap: break-word; }
.eng-display { margin-top: 8px; display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; }
.eng-display .k { color: var(--silver-dim); font-size: 11px; font-family: var(--font-mono); }
.eng-display .v { font-size: 12px; font-family: var(--font-mono); word-break: break-word; }
.eng-cad { color: var(--silver-faint); font-size: 11px; margin-top: 6px; }
.progress-wrap { margin-top: 8px; background: var(--charcoal-3); border-radius: 6px; height: 8px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--blue); transition: width 0.6s; }
.progress-label { font-size: 11px; color: var(--blue); margin-top: 4px; font-family: var(--font-mono); }

details.raw { margin-top: 8px; }
details.raw summary { color: var(--silver-faint); font-size: 11px; cursor: pointer; }
details.raw pre {
  margin-top: 6px; padding: 8px; background: var(--charcoal); border-radius: 8px;
  font-size: 11px; font-family: var(--font-mono); white-space: pre-wrap; word-wrap: break-word;
  color: var(--silver-dim); max-height: 300px; overflow-y: auto;
}

/* buttons */
.btn {
  display: block; width: 100%; padding: 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--charcoal-3); color: var(--silver);
  font-size: 14px; font-weight: 600; letter-spacing: 0.06em; cursor: pointer;
}
.btn:active { opacity: 0.7; }
.btn-primary { background: var(--silver); color: var(--charcoal); border-color: var(--silver); }
.btn-small { width: auto; padding: 7px 12px; font-size: 12px; display: inline-block; }
.btn-danger { border-color: var(--red); color: var(--red); background: none; }
.btn[disabled] { opacity: 0.45; }

/* dispatch */
.dispatch-desc { color: var(--silver-dim); font-size: 12px; margin: 4px 0 8px; }
textarea.dispatch-text {
  width: 100%; min-height: 96px; padding: 10px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--charcoal); color: var(--silver);
  font-size: 15px; font-family: var(--font-body); resize: vertical;
}
.filed-card { border-color: var(--green); }
.filed-card .head { color: var(--green); font-weight: 600; font-size: 13px; }
.failed-card { border-color: var(--red); }
.failed-card .head { color: var(--red); font-weight: 600; font-size: 13px; }

/* file lists */
.file-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 12px 4px; border-bottom: 1px solid var(--line); cursor: pointer;
}
.file-row:last-child { border-bottom: none; }
.file-name { font-size: 14px; word-break: break-word; }
.file-meta { color: var(--silver-faint); font-size: 11px; font-family: var(--font-mono); flex: none; }
.file-row.pinned .file-name { color: var(--silver); font-weight: 600; }

/* doc viewer */
.doc-back { margin-bottom: 10px; }
.doc {
  background: var(--charcoal-2); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 14px; font-size: 14px; line-height: 1.55; overflow-x: hidden;
}
.doc h1 { font-size: 17px; margin: 14px 0 8px; }
.doc h2 { font-size: 15px; margin: 14px 0 6px; }
.doc h3, .doc h4 { font-size: 14px; margin: 12px 0 6px; }
.doc p { margin: 8px 0; word-wrap: break-word; }
.doc ul, .doc ol { margin: 8px 0 8px 20px; }
.doc li { margin: 3px 0; word-wrap: break-word; }
.doc code { font-family: var(--font-mono); font-size: 12px; background: var(--charcoal); padding: 1px 4px; border-radius: 4px; }
.doc pre { background: var(--charcoal); border-radius: 8px; padding: 10px; overflow-x: auto; margin: 8px 0; }
.doc pre code { background: none; padding: 0; font-size: 12px; white-space: pre-wrap; word-wrap: break-word; }
.doc hr { border: none; border-top: 1px solid var(--line); margin: 14px 0; }
.doc blockquote { border-left: 3px solid var(--silver-faint); padding-left: 10px; color: var(--silver-dim); margin: 8px 0; }
.doc table { border-collapse: collapse; margin: 8px 0; width: 100%; display: block; overflow-x: auto; }
.doc td, .doc th { border: 1px solid var(--line); padding: 4px 8px; font-size: 12px; }

/* tabs */
.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex; justify-content: space-around;
  padding: 8px 4px calc(var(--safe-bottom) + 8px);
  background: rgba(35,31,32,0.94); backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
}
.tab-btn {
  background: none; border: none; color: var(--silver-faint);
  font-size: 9px; letter-spacing: 0.02em; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 2px 2px; min-width: 0; flex: 1;
}
.tab-btn .glyph { font-size: 17px; }
.tab-btn.active { color: var(--silver); }
.tab-btn .label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }

/* settings */
.settings label { display: block; color: var(--silver-dim); font-size: 12px; margin: 12px 0 4px; }
.settings input {
  width: 100%; padding: 10px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--charcoal); color: var(--silver); font-size: 14px; font-family: var(--font-mono);
}
.kv { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.kv:last-child { border-bottom: none; }
.kv .k { color: var(--silver-dim); }