:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --border: #2d3148;
  --accent: #4f8ef7;
  --accent-hover: #6ba3ff;
  --danger: #e05c5c;
  --success: #4caf76;
  --warn: #e0a84f;
  --text: #e8eaf6;
  --text-muted: #8890b0;
  --radius: 8px;
  --fader-h: 260px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- Header ---- */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo { font-size: 18px; font-weight: 700; color: var(--accent); letter-spacing: 1px; }
.header-right { display: flex; align-items: center; gap: 14px; }
.status-badge {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.status-ok { background: rgba(76,175,118,.18); color: var(--success); }
.status-err { background: rgba(224,92,92,.18); color: var(--danger); }
.status-unknown { background: rgba(136,144,176,.12); color: var(--text-muted); }

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 2px;
  padding: 10px 20px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.tab-btn {
  padding: 9px 18px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ---- Tab content ---- */
.tab-content { display: none; padding: 20px 24px; flex: 1; }
.tab-content.active { display: flex; flex-direction: column; }

/* ================================================================
   MIXER LAYOUT
   ================================================================ */
.mixer-layout {
  display: flex;
  gap: 20px;
  align-items: stretch;
  height: 100%;
  min-height: 320px;
}

/* ---- Peak Meter section ---- */
.meter-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 4px;
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 10px 10px;
  overflow: hidden;
}
.meter-label-top {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-muted);
}
.meter-wrap {
  display: flex;
  gap: 6px;
  align-items: flex-start;
}
#meter-canvas {
  display: block;
  border-radius: 3px;
}
.meter-scale {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 260px;
  padding: 4px 0;
}
.meter-scale-tick {
  font-size: 9px;
  color: var(--text-muted);
  font-family: monospace;
  white-space: nowrap;
  line-height: 1;
}
.meter-channels {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 4px;
  padding-left: 4px;
}
.meter-clip {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--surface2);
  color: transparent;
  transition: color .1s, background .1s;
  margin-top: 2px;
}
.meter-clip.clipping {
  background: var(--danger);
  color: #fff;
}

/* ---- Fader strip ---- */
.fader-strip {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  overflow-x: auto;
  padding-bottom: 8px;
  flex: 1;
  min-height: 300px;
}
.fader-empty {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  line-height: 1.7;
  margin: auto;
}

/* ---- Individual fader channel ---- */
.fader-channel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 8px;
  min-width: 116px;
  max-width: 116px;
  flex-shrink: 0;
  transition: border-color .2s;
  user-select: none;
}
.fader-channel.active-ch {
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(79,142,247,.2);
}
.fader-channel.muted-ch { opacity: .45; }

.fader-type {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--surface2);
  color: var(--text-muted);
}
.fader-type-wr  { background: rgba(79,142,247,.2); color: var(--accent); }
.fader-type-srt { background: rgba(76,175,118,.2); color: var(--success); }
.fader-type-rtp { background: rgba(224,168,79,.2); color: var(--warn); }

.fader-name {
  font-size: 11px;
  font-weight: 600;
  text-align: center;
  word-break: break-word;
  max-height: 32px;
  overflow: hidden;
  line-height: 1.3;
  width: 100%;
}

/* Vertical slider — absolute positioning + rotate is the most cross-browser reliable */
.fader-zone {
  display: flex;
  flex-direction: row;
  gap: 3px;
  align-items: stretch;
  flex-shrink: 0;
}
.fader-slider-wrap {
  position: relative;
  width: 32px;
  height: calc(var(--fader-h) - 8px);
  flex-shrink: 0;
}
.fader-slider {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--fader-h) - 8px);
  height: 28px;
  transform: translate(-50%, -50%) rotate(-90deg);
  cursor: pointer;
  accent-color: var(--accent);
  margin: 0;
  padding: 0;
}

/* PFL mini meter */
.pfl-meter {
  width: 7px;
  height: calc(var(--fader-h) - 8px);
  background: #0d1018;
  border-radius: 3px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.pfl-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0%;
  background: var(--success);
  border-radius: 2px 2px 0 0;
  transition: height 0.06s linear, background 0.06s linear;
}

/* Fader dB tick scale */
.fader-tick-col {
  position: relative;
  width: 18px;
  height: calc(var(--fader-h) - 8px);
  flex-shrink: 0;
}
.fader-tick {
  position: absolute;
  left: 0;
  font-size: 7px;
  font-family: monospace;
  color: var(--text-muted);
  transform: translateY(-50%);
  white-space: nowrap;
  line-height: 1;
}
.fader-tick.tick-zero {
  color: var(--accent);
  font-weight: 700;
}
.fader-tick.tick-plus {
  color: var(--warn);
}

.fader-db {
  font-size: 10px;
  font-family: monospace;
  color: var(--text-muted);
  text-align: center;
  min-width: 44px;
}
.fader-db.fader-active { color: var(--accent); font-weight: 700; }

.fader-details-btn {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
  cursor: pointer;
  width: 100%;
  letter-spacing: .5px;
  transition: background .15s, color .15s, border-color .15s;
}
.fader-details-btn:hover { background: var(--border); }
.fader-details-btn.open { border-color: var(--accent); color: var(--accent); }

.fader-details-panel {
  display: none;
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 6px;
  font-size: 9px;
  font-family: monospace;
  color: var(--text-muted);
  line-height: 1.7;
}
.fader-details-panel.open { display: block; }
.fader-detail-row { display: flex; justify-content: space-between; gap: 4px; }
.fader-detail-key { color: var(--text-muted); flex-shrink: 0; }
.fader-detail-val { color: var(--text); text-align: right; word-break: break-all; max-width: 72px; overflow: hidden; text-overflow: ellipsis; }

.fader-btn-on {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--danger);
  background: var(--surface2);
  color: var(--danger);
  cursor: pointer;
  width: 100%;
  letter-spacing: .5px;
  transition: background .15s, color .15s;
}
.fader-btn-on.is-on { background: var(--danger); color: #fff; }

.fader-btn-off {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--success);
  background: var(--surface2);
  color: var(--success);
  cursor: pointer;
  width: 100%;
  letter-spacing: .5px;
  transition: background .15s, color .15s;
}
.fader-btn-off.is-off { background: var(--success); color: #fff; }

.fader-pfl {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--accent);
  background: var(--surface2);
  color: var(--accent);
  cursor: pointer;
  letter-spacing: .5px;
  transition: background .15s, color .15s, border-color .15s;
}
.fader-pfl:hover { background: rgba(79,142,247,.18); }
.fader-pfl.pfl-active {
  background: var(--warn);
  border-color: var(--warn);
  color: #000;
}
.fader-channel.pfl-ch {
  border-color: var(--warn);
  box-shadow: 0 0 10px rgba(224,168,79,.25);
}

.fader-pfl-row {
  display: flex;
  gap: 4px;
  justify-content: center;
  width: 100%;
}

/* MM (Mix-Minus) button on fader channel */
.fader-mm {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1.5px solid #6ba3ff;
  background: transparent;
  color: #6ba3ff;
  cursor: pointer;
  letter-spacing: .5px;
  transition: background .15s, color .15s, border-color .15s;
}
.fader-mm:hover { background: rgba(79,142,247,.18); }
.fader-mm.mm-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 10px rgba(79,142,247,.3);
}

/* MON button */
.mon-btn {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  border: 1.5px solid var(--text-muted);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  letter-spacing: .5px;
  transition: background .15s, color .15s, border-color .15s;
  flex-shrink: 0;
}
.mon-btn:hover { background: rgba(76,175,118,.18); border-color: var(--success); color: var(--success); }
.mon-btn.mon-active {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
  box-shadow: 0 0 8px rgba(76,175,118,.35);
}

/* PFL monitor bar */
.pfl-monitor {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 12px;
  flex-shrink: 0;
}
.pfl-mon-tag {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--warn);
  flex-shrink: 0;
}
.pfl-mon-name {
  font-size: 13px;
  font-weight: 600;
  min-width: 90px;
  color: var(--text-muted);
}
.pfl-mon-name.active { color: var(--warn); }
#pfl-audio {
  flex: 1;
  height: 28px;
  min-width: 0;
  accent-color: var(--warn);
}

/* ================================================================
   TABLES & FORMS
   ================================================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.section-header h2 { font-size: 17px; font-weight: 600; }

.source-table { width: 100%; border-collapse: collapse; }
.source-table th {
  text-align: left;
  padding: 9px 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .7px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.source-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.source-table tbody tr:hover { background: var(--surface); }
.url-cell {
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: monospace;
  font-size: 12px;
  color: var(--text-muted);
}
.action-btns { display: flex; gap: 8px; }

/* Buttons */
.btn {
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background .15s;
}
.btn:hover { background: var(--border); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Settings form */
.settings-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  max-width: 680px;
}
.settings-form label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 12px;
  color: var(--text-muted);
}
.settings-form input, .settings-form select {
  padding: 8px 11px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font-size: 13px;
}
.settings-form .checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  grid-column: 1 / -1;
}
.settings-form .form-actions { grid-column: 1 / -1; margin-top: 6px; }
.info-box {
  margin-top: 18px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 13px;
  color: var(--text-muted);
  max-width: 680px;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.65);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 26px 22px;
  width: 400px;
  max-width: 95vw;
  display: flex;
  flex-direction: column;
  gap: 13px;
}
.modal h3 { font-size: 16px; font-weight: 700; }
.modal label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 12px;
  color: var(--text-muted);
}
.modal label.checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text);
  cursor: pointer;
}
.modal label.checkbox-label input[type="checkbox"] {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  accent-color: var(--accent);
}
.modal input, .modal select {
  padding: 8px 11px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font-size: 13px;
  width: 100%;
}
.modal textarea {
  padding: 8px 11px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font-size: 12px;
  font-family: monospace;
  width: 100%;
  resize: vertical;
}
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 4px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  padding: 11px 18px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  z-index: 999;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .2s, transform .2s;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.ok { border-color: var(--success); color: var(--success); }
.toast.err { border-color: var(--danger); color: var(--danger); }

/* Output type badges */
.out-type-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .03em;
}
.out-type-harbor  { background: #1a3a5c; color: var(--accent); }
.out-type-srt     { background: #3a2a10; color: var(--warn); }
.out-type-icecast { background: #1a3a22; color: var(--success); }

/* Wider output modal */
.modal-wide { max-width: 520px; }

@media (max-width: 640px) {
  .settings-form { grid-template-columns: 1fr; }
  .mixer-layout { flex-direction: column; }
  .fader-strip { min-height: 260px; }
}