/* ============================================================
   Ham Radio Web Studio — "night shack" console theme
   Palette: charcoal-blue panels, amber VFD readouts (rig display
   heritage), signal cyan for data, TX red. Type: Chakra Petch
   display / Inter body / IBM Plex Mono for readouts (the same
   family lineage that once drove real teletypes — fitting).
   ============================================================ */

:root {
  --bg0: #0b0e13;          /* room */
  --bg1: #121722;          /* panel */
  --bg2: #1a2130;          /* raised control */
  --bg3: #212a3d;          /* hover */
  --line: rgba(96, 114, 150, 0.22);
  --line-strong: rgba(96, 114, 150, 0.45);

  --amber: #ffb454;        /* VFD readout */
  --amber-dim: #b97f33;
  --cyan: #45c7d6;         /* data / RX */
  --green: #7bd88f;        /* good */
  --warn: #ffd166;         /* fair */
  --red: #ff5d5d;          /* TX / poor */

  --text: #d9dfea;
  --muted: #8b95a7;

  --font-display: "Chakra Petch", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "Consolas", "Menlo", monospace;

  --radius: 10px;
  --dock-h: 240px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 70% -10%, rgba(69,199,214,0.05), transparent 60%),
    var(--bg0);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}

.mono { font-family: var(--font-mono); }
.muted { color: var(--muted); }

/* ---------------- VFD readouts (the signature) ---------------- */
.vfd {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--amber);
  letter-spacing: 0.08em;
  text-shadow: 0 0 6px rgba(255, 180, 84, 0.35);
  font-variant-numeric: tabular-nums;
}
.vfd-small { font-size: 13px; }

/* ---------------- Top bar ---------------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 8px 16px;
  background: linear-gradient(180deg, var(--bg2), var(--bg1));
  border-bottom: 1px solid var(--line-strong);
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark { width: 26px; height: 26px; color: var(--amber); flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand-sub { font-size: 10.5px; color: var(--muted); letter-spacing: 0.12em; text-transform: uppercase; }

.topbar-clock {
  margin-left: auto;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
#clock-utc { font-size: 28px; }
.clock-label { font-size: 10px; color: var(--muted); letter-spacing: 0.18em; }

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.clock-local-wrap { display: flex; align-items: baseline; gap: 6px; }

.leds { display: flex; gap: 10px; }
.led {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--font-mono); font-size: 11px; color: var(--muted);
  letter-spacing: 0.1em;
}
.led i {
  width: 9px; height: 9px; border-radius: 50%;
  background: #2c3548; border: 1px solid var(--line-strong);
  transition: background 120ms, box-shadow 120ms;
}
.led.on i { border-color: transparent; }
#led-rx.on i { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
#led-rx.on { color: var(--cyan); }
#led-tx.on i { background: var(--red); box-shadow: 0 0 8px var(--red); }
#led-tx.on { color: var(--red); }

/* ---------------- Buttons & fields ---------------- */
.btn {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
  background: var(--bg2);
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  padding: 7px 12px;
  cursor: pointer;
  transition: background 100ms, border-color 100ms;
}
.btn:hover { background: var(--bg3); }
.btn:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
.btn-accent { background: rgba(255,180,84,0.14); border-color: var(--amber-dim); color: var(--amber); }
.btn-accent:hover { background: rgba(255,180,84,0.24); }
.btn-danger { background: rgba(255,93,93,0.14); border-color: #8c3b3b; color: var(--red); }
.btn-danger:hover { background: rgba(255,93,93,0.26); }
.btn-icon { padding: 6px 8px; line-height: 0; }
.btn-mini { padding: 3px 8px; font-size: 11px; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; }
.field > span { font-size: 11px; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; }
.field em { font-style: normal; color: var(--amber); }
.field-row { display: flex; gap: 10px; }
.field-row .field { flex: 1; }

input[type="text"], input[type="number"], select, textarea {
  background: var(--bg0);
  color: var(--text);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 7px 9px;
  font-size: 13px;
  font-family: var(--font-body);
}
input.mono, textarea.mono { font-family: var(--font-mono); }
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--amber); outline-offset: 1px;
}
input[type="range"] { accent-color: var(--amber); width: 100%; }
input[type="checkbox"] { accent-color: var(--amber); }

/* ---------------- Layout ---------------- */
.layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 0;
}

/* ---------------- Sidebar ---------------- */
.sidebar {
  background: var(--bg1);
  border-right: 1px solid var(--line);
  padding: 14px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.side-title {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}
.module-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.module-item {
  display: flex; align-items: center; gap: 9px;
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  transition: border-color 100ms, background 100ms;
}
.module-item:hover { background: var(--bg3); }
.module-item.on { border-color: var(--amber-dim); }
.module-icon { font-size: 16px; width: 22px; text-align: center; flex: none; }
.module-meta { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.module-name { font-weight: 600; font-size: 13px; }
.module-desc { font-size: 11px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.module-switch {
  flex: none; width: 30px; height: 16px; border-radius: 9px;
  background: #2c3548; border: 1px solid var(--line-strong);
  position: relative; transition: background 120ms;
}
.module-switch::after {
  content: ""; position: absolute; top: 1px; left: 1px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--muted); transition: transform 120ms, background 120ms;
}
.module-item.on .module-switch { background: rgba(255,180,84,0.3); }
.module-item.on .module-switch::after { transform: translateX(14px); background: var(--amber); }
.module-loading { color: var(--muted); font-size: 12px; padding: 6px 2px; list-style: none; }

.side-hint { font-size: 11.5px; color: var(--muted); line-height: 1.5; margin: 4px 0 0; }
.side-foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 3px;
}
#rx-meter { width: 100%; height: 10px; background: var(--bg0); border-radius: 4px; border: 1px solid var(--line); }

/* ---------------- Main / tabs / panels ---------------- */
.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }

.tabs {
  display: flex; gap: 4px;
  padding: 8px 14px 0;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  flex: none;
}
.tab {
  font-family: var(--font-display);
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.05em;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  padding: 8px 16px;
  cursor: pointer;
  white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab:focus-visible { outline: 2px solid var(--amber); outline-offset: -2px; }
.tab.active {
  color: var(--amber);
  background: var(--bg1);
  border-color: var(--line);
}
.tab .tab-close { margin-left: 8px; color: var(--muted); }
.tab .tab-close:hover { color: var(--red); }

.panels { flex: 1; overflow-y: auto; min-height: 0; }
.panel { display: none; padding: 16px; }
.panel.active { display: block; }

/* ---------------- Cards ---------------- */
.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 14px;
  align-items: start;
}
.card {
  background: var(--bg1);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-map { grid-column: span 2; }
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
.card-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
}
.card-tag { font-size: 11px; color: var(--muted); }
.card-body { padding: 12px 14px; }
.card-foot {
  padding: 8px 14px;
  border-top: 1px solid var(--line);
  font-size: 11px;
}

.grayline-canvas { display: block; width: 100%; aspect-ratio: 2 / 1; background: #0a0d14; }

.solar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}
.solar-cell {
  background: var(--bg1);
  padding: 14px 10px;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.solar-val { font-size: 22px; }
.solar-val.good { color: var(--green); text-shadow: 0 0 6px rgba(123,216,143,0.35); }
.solar-val.warn { color: var(--warn); text-shadow: 0 0 6px rgba(255,209,102,0.35); }
.solar-val.bad  { color: var(--red);  text-shadow: 0 0 6px rgba(255,93,93,0.35); }
.solar-key { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }

.band-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 13px; }
.band-table th {
  text-align: left; padding: 8px 14px;
  font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); border-bottom: 1px solid var(--line); font-weight: 500;
}
.band-table td { padding: 7px 14px; border-bottom: 1px solid var(--line); }
.band-table tr:last-child td { border-bottom: none; }
.cond { font-weight: 600; }
.cond-good { color: var(--green); }
.cond-fair { color: var(--warn); }
.cond-poor { color: var(--red); }

.world-clocks { list-style: none; margin: 0; padding: 6px 0; }
.world-clocks li {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 8px 14px;
}
.world-clocks .wc-zone { color: var(--muted); font-size: 12px; }
.world-clocks .wc-time { font-size: 17px; }

.station-body { padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; }
.station-row { display: flex; justify-content: space-between; align-items: baseline; }
.station-row .vfd { font-size: 18px; }
.grid-tool { display: grid; grid-template-columns: 1fr 1fr auto; gap: 7px; }
.grid-tool input { min-width: 0; }
#grid-out { font-size: 12px; min-height: 16px; }

.app-log {
  height: 180px; overflow-y: auto;
  padding: 10px 14px;
  font-size: 12px; line-height: 1.55;
  white-space: pre-wrap; word-break: break-word;
}
.app-log .log-time { color: var(--muted); }
.app-log .log-mod { color: var(--cyan); }

/* ---------------- Waterfall dock ---------------- */
.dock {
  border-top: 1px solid var(--line-strong);
  background: var(--bg1);
  display: flex; flex-direction: column;
}
.dock-controls {
  display: flex; align-items: center; gap: 16px;
  padding: 6px 14px;
  flex-wrap: wrap;
}
.dock-title {
  font-family: var(--font-display);
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted);
}
.dock-readout { color: var(--amber); min-width: 90px; }
.dock-field { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.dock-field select { padding: 3px 6px; font-size: 12px; }
.dock-hint { font-size: 11px; margin-left: auto; }
#spectrum, #waterfall { display: block; width: 100%; background: #05070b; }
#spectrum { border-top: 1px solid var(--line); }
#waterfall { cursor: crosshair; }

/* ---------------- Modal ---------------- */
.modal {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg1);
  color: var(--text);
  padding: 0;
  max-width: 460px;
  width: calc(100vw - 40px);
}
.modal::backdrop { background: rgba(4, 6, 10, 0.72); }
.modal-body { padding: 20px; }
.modal-body h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 15px; letter-spacing: 0.1em; text-transform: uppercase;
}
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }
.modal-note { font-size: 11px; margin: 14px 0 0; }
.modal-note code { color: var(--cyan); }

/* ---------------- Module panel building blocks ----------------
   Modules build their UI from these shared classes so every mode
   feels like part of the same console. */
.mod-layout { display: grid; grid-template-columns: 1fr 320px; gap: 14px; align-items: start; }
.mod-main, .mod-side { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

.rx-screen {
  background: #05070b;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 160px; max-height: 300px;
  overflow-y: auto;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.65;
  color: var(--green);
  text-shadow: 0 0 5px rgba(123,216,143,0.25);
  white-space: pre-wrap; word-break: break-word;
}
.tx-area {
  width: 100%;
  min-height: 84px;
  resize: vertical;
  font-size: 14px;
}
.mod-controls { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: end; }
.mod-controls .field { margin-bottom: 0; min-width: 120px; }
.mod-status { font-family: var(--font-mono); font-size: 12px; color: var(--muted); min-height: 16px; }
.mod-note {
  font-size: 12px; color: var(--muted); line-height: 1.55;
  border-left: 2px solid var(--amber-dim);
  padding: 4px 0 4px 12px;
  margin: 0;
}
.beta-flag {
  display: inline-block;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em;
  color: var(--warn); border: 1px solid var(--warn);
  border-radius: 4px; padding: 1px 6px; margin-left: 8px;
  vertical-align: middle;
}
.mod-canvas { display: block; width: 100%; background: #05070b; border: 1px solid var(--line); border-radius: 8px; }
.kv-list { list-style: none; margin: 0; padding: 0; font-family: var(--font-mono); font-size: 12.5px; }
.kv-list li { display: flex; justify-content: space-between; padding: 5px 0; border-bottom: 1px dashed var(--line); }
.kv-list li:last-child { border-bottom: none; }
.kv-list .k { color: var(--muted); }

/* ---------------- Scrollbars ---------------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 5px; border: 2px solid var(--bg1); }
::-webkit-scrollbar-track { background: transparent; }

/* ---------------- Responsive ---------------- */
@media (max-width: 980px) {
  body { overflow: auto; }
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--line); }
  .card-map { grid-column: span 1; }
  .mod-layout { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; gap: 10px; }
  .topbar-clock { margin-left: 0; order: 3; width: 100%; justify-content: center; }
  #clock-utc { font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}