* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #1a1a2e;
  color: #e0e0e0;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: #16213e;
  border-bottom: 1px solid #0f3460;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

header h1 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #e94560;
}

/* ── UberSDR URL widget — always-visible input, mirrors #freq-tune ── */
#ubersdr-url-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

#ubersdr-url-wrap label {
  font-size: 0.75rem;
  color: #888;
  white-space: nowrap;
}

#ubersdr-url-input {
  width: 32ch;
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  color: #e0e0e0;
  font-size: 0.8rem;
  font-family: monospace;
  padding: 3px 6px;
  transition: border-color 0.15s;
}

#ubersdr-url-input:focus {
  border-color: #6fcf97;
  outline: none;
}

#ubersdr-url-set-btn {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  color: #6fcf97;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  padding: 3px 8px;
  transition: background 0.15s, border-color 0.15s;
}

#ubersdr-url-set-btn:hover {
  background: #1a4731;
  border-color: #6fcf97;
}

#ubersdr-url-status {
  font-size: 0.75rem;
  min-width: 4ch;
  white-space: nowrap;
}

#ubersdr-url-status.url-err { color: #eb5757; }
#ubersdr-url-status.url-ok  { color: #6fcf97; }

#status-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 12px;
  background: #0f3460;
  color: #a0c4ff;
}

.badge.running  { background: #1a4731; color: #6fcf97; }
.badge.reconnecting { background: #4a3000; color: #f2c94c; }
.badge.stopped  { background: #3d1a1a; color: #eb5757; }

/* ── Audio output device selector ── */
#audio-output-select {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  color: #a0c4ff;
  cursor: pointer;
  font-size: 0.78rem;
  padding: 3px 6px;
  max-width: 160px;
  flex-shrink: 0;
  transition: border-color 0.15s;
}

#audio-output-select:hover,
#audio-output-select:focus {
  border-color: #6fcf97;
  outline: none;
}

/* ── Audio preview button ── */
#audio-preview-btn {
  background: none;
  border: 1px solid #0f3460;
  border-radius: 6px;
  color: #888;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 3px 7px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  flex-shrink: 0;
}

#audio-preview-btn:hover {
  border-color: #6fcf97;
  color: #e0e0e0;
}

#audio-preview-btn.active {
  background: #1a4731;
  border-color: #6fcf97;
  color: #6fcf97;
}

/* ── Live SNR bar ── */
#snr-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  background: #0f3460;
  border-radius: 8px;
  padding: 3px 10px 3px 8px;
}

#snr-bar-label {
  font-size: 0.7rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

#live-snr-chart {
  display: block;
  width: 200px;
  height: 36px;
}

#live-snr-value {
  font-size: 0.95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  min-width: 4.5ch;
  text-align: right;
  white-space: nowrap;
}

#live-dot {
  font-size: 0.8rem;
  color: #6fcf97;
}

#live-dot.offline { color: #eb5757; }

.main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Gallery ── */
#gallery-panel {
  width: 340px;
  flex-shrink: 0;
  background: #16213e;
  border-right: 1px solid #0f3460;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Live gallery card — always the first item, above day-groups ── */
#live-gallery-card {
  flex-shrink: 0;
  margin: 8px 8px 8px;
  cursor: pointer;
  position: relative;
}

/* Separator line between the live card and the scrollable gallery below.
   Uses a pseudo-element so it sits outside the card's border-box and doesn't
   clip the card's own 2px selected border at the bottom. */
#live-gallery-card::after {
  content: '';
  display: block;
  position: absolute;
  bottom: -9px;   /* sits in the 8px margin gap below the card */
  left: -8px;     /* stretch to the panel edges (card has 8px side margins) */
  right: -8px;
  height: 1px;
  background: #1e3a6e;
  pointer-events: none;
}

#live-card-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 2;
  background: #e94560;
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1.4;
  pointer-events: none;
}

/* Pulse the badge dot when actively receiving */
#live-gallery-card.receiving #live-card-badge {
  animation: live-pulse 1.2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.45; }
}

#live-card-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  background: #0a0a1a;
  border-radius: 4px 4px 0 0;
  overflow: hidden;
}

#live-card-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top center; /* SSTV decodes top-to-bottom — anchor to top so partial images don't stretch */
  display: block;
  border-radius: 4px 4px 0 0;
}

/* Hide the img element when src is empty so the idle overlay shows */
#live-card-img[src=""] { display: none; }

#live-card-idle {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #555;
  font-size: 0.8rem;
  pointer-events: none;
}

/* Hide idle text when an image is present */
#live-gallery-card.receiving #live-card-idle { display: none; }

#gallery-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 6px;
  flex-shrink: 0;
}

#gallery-header h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  margin: 0;
}

#gallery-total-count {
  font-size: 0.72rem;
  color: #6a9fd8;
  background: #0f3460;
  border-radius: 10px;
  padding: 2px 8px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  /* Hide when empty so it doesn't take up space before images load */
  min-width: 0;
}

#gallery-total-count:empty {
  display: none;
}

#gallery-complete-label,
#gallery-show-latest-label,
#gallery-snr-filter-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  color: #888;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

#gallery-complete-label input[type="checkbox"],
#gallery-show-latest-label input[type="checkbox"],
#gallery-snr-filter-label input[type="checkbox"] {
  accent-color: #6fcf97;
  cursor: pointer;
}

#gallery-grid {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  padding-top: 10px;  /* extra room so the first day-group label isn't clipped */
  /* Single column — day groups handle their own 2-col inner grid */
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ── Day group — fieldset-style bordered box with date label ── */
.day-group {
  border: 1px solid #1e3a6e;
  border-radius: 6px;
  position: relative;
  padding: 28px 8px 8px;
}

.day-group-label {
  position: absolute;
  top: -1px;
  left: 10px;
  background: #16213e;
  padding: 0 8px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #6a9fd8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  line-height: 1;
  /* Sit on top of the border */
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 5px;
}

.day-group-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #0f3460;
  color: #6a9fd8;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 1px 5px;
  border-radius: 8px;
  min-width: 1.6em;
  text-transform: none;
  line-height: 1.4;
}

.day-group-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  align-items: start;
}

#gallery-sentinel {
  height: 1px;
  flex-shrink: 0;
}

.thumb-card {
  cursor: pointer;
  border-radius: 6px;
  /* No overflow:hidden — let the card grow to its natural height so meta is never clipped */
  background: #0f3460;
  border: 2px solid transparent;
  transition: border-color 0.15s;
}

.thumb-card:hover { border-color: #e94560; }
.thumb-card.selected { border-color: #e94560; }

.thumb-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  background: #0a0a1a;
  /* Round only the top corners — card border-radius handles the outer shape */
  border-radius: 4px 4px 0 0;
}

.thumb-meta {
  padding: 6px 8px 8px;
  font-size: 0.75rem;
  line-height: 1.5;
  background: #0f3460;
  border-top: 1px solid rgba(255,255,255,0.08);
  border-radius: 0 0 4px 4px;
}

.thumb-meta-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 4px;
}
.thumb-meta .mode-group { display: inline-flex; align-items: baseline; gap: 3px; }
.thumb-meta .mode { color: #a0c4ff; font-weight: 700; }
.thumb-meta .decode-badge { font-size: 0.8em; line-height: 1; }
.thumb-meta .call { color: #e0e0e0; font-size: 0.78rem; text-align: right; }
.thumb-meta .snr  { /* colour applied inline via snrColor() */ }
.thumb-meta .freq { color: #888; }

/* ── Detail panel ── */
#detail-panel {
  flex: 1;
  min-height: 0;        /* allow flex child to shrink below content size */
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#detail-empty {
  margin: auto;
  color: #555;
  font-size: 0.9rem;
  text-align: center;
}

#detail-content { display: none; flex-direction: column; gap: 12px; }
#detail-content.visible { display: flex; }

/* Two-column top row: meta table on left, image on right */
#detail-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: start;
}

/* Navigation row: prev/next on the left, slideshow in middle, close on the right */
#detail-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

#detail-slideshow-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  color: #888;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  padding: 0 4px;
}

#detail-slideshow-label input[type="checkbox"] {
  accent-color: #6fcf97;
  cursor: pointer;
}

/* Highlight label text when slideshow is active */
#detail-slideshow-label:has(input:checked) {
  color: #6fcf97;
}

#detail-prev-btn,
#detail-next-btn {
  background: none;
  border: 1px solid #0f3460;
  border-radius: 6px;
  color: #a0c4ff;
  cursor: pointer;
  font-size: 0.75rem;
  padding: 3px 10px;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
}

#detail-prev-btn:hover:not(:disabled),
#detail-next-btn:hover:not(:disabled) {
  border-color: #4a90d9;
  color: #e0e0e0;
}

#detail-prev-btn:disabled,
#detail-next-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

#detail-close-btn {
  margin-left: auto;
  background: none;
  border: 1px solid #0f3460;
  border-radius: 6px;
  color: #888;
  cursor: pointer;
  font-size: 0.75rem;
  padding: 3px 10px;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
}

#detail-close-btn:hover {
  border-color: #eb5757;
  color: #eb5757;
}

/* Wrapper holds the image and the SNR bar side-by-side */
#detail-image-wrap {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 4px;
  min-width: 0;
}

#detail-image {
  flex: 1;
  min-width: 0;
  max-height: 40vh;
  object-fit: contain;
  border-radius: 6px;
  border: 1px solid #0f3460;
  background: #0a0a1a;
  display: block;
}

/* Vertical SNR quality bar — sits to the right of the image.
   align-self:stretch makes it fill the flex row height automatically,
   so it always matches the image height without JS measurement. */
#detail-snr-bar,
#rx-live-snr-bar {
  width: 10px;
  flex-shrink: 0;
  align-self: stretch;
  border-radius: 4px;
  display: block;
}

/* Wrapper that stacks the meta table above the action buttons */
#detail-meta-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

#detail-meta {
  background: #16213e;
  border-radius: 6px;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 16px;
  font-size: 0.85rem;
}

#detail-meta .label { color: #888; }
#detail-meta .value { color: #e0e0e0; }

/* Save + Delete action row below the metadata table */
#detail-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

#detail-save-btn {
  display: inline-block;
  background: #0f3460;
  border: 1px solid #1e3a6e;
  border-radius: 6px;
  color: #a0c4ff;
  font-size: 0.82rem;
  padding: 5px 14px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

#detail-save-btn:hover {
  background: #1a4a8a;
  border-color: #4a90d9;
}

#detail-delete-btn {
  background: none;
  border: 1px solid #3d1a1a;
  border-radius: 6px;
  color: #eb5757;
  font-size: 0.82rem;
  padding: 5px 14px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

#detail-delete-btn:hover:not(:disabled) {
  background: #3d1a1a;
  border-color: #eb5757;
}

#detail-delete-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#snr-chart-container {
  background: #16213e;
  border-radius: 6px;
  padding: 12px;
  /* Prevent Chart.js responsive resize from growing the container infinitely */
  max-height: 220px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

#snr-chart-container h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-bottom: 8px;
  flex-shrink: 0;
}

/* Fixed height canvas — Chart.js reads this via offsetHeight when
   maintainAspectRatio:false; the container max-height keeps it bounded. */
#snr-chart { width: 100%; height: 160px; max-height: 160px; flex-shrink: 0; }

#map-container {
  background: #16213e;
  border-radius: 6px;
  padding: 12px;
}

#map-container h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-bottom: 8px;
}

#map { width: 100%; height: 220px; border-radius: 4px; }

#map-no-callsign {
  display: none;
  color: #555;
  font-size: 0.85rem;
  padding: 8px 0;
}

/* Permanent tooltip on the receiver (📡) marker */
.rx-tooltip {
  background: rgba(22, 33, 62, 0.92);
  border: 1px solid #0f3460;
  border-radius: 5px;
  color: #e0e0e0;
  font-size: 0.78rem;
  line-height: 1.4;
  padding: 4px 8px;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0,0,0,0.5);
}
.rx-tooltip::before { display: none; }

/* ── Live RX detail panel — shown when the live gallery card is selected ── */
#rx-live-panel {
  display: none;  /* hidden until the live card is selected */
  background: #16213e;
  border-radius: 6px;
  padding: 12px 16px;
  flex-shrink: 0;
}

#rx-live-panel.visible {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#rx-live-panel h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #e94560;
  margin-bottom: 0;
  flex-shrink: 0;
}

/* Idle message shown when live card is selected but no reception is active */
#rx-live-idle {
  color: #555;
  font-size: 0.9rem;
  text-align: center;
  padding: 24px 0 8px;
}

/* Hide idle message during active reception */
#rx-live-panel.receiving #rx-live-idle { display: none; }

/* Hide reception content when idle (not receiving) */
#rx-live-panel:not(.receiving) #rx-live-progress-row,
#rx-live-panel:not(.receiving) #rx-live-top,
#rx-live-panel:not(.receiving) #rx-live-snr-container,
#rx-live-panel:not(.receiving) #rx-live-map-container { display: none; }

#rx-live-label {
  color: #a0c4ff;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
}

#rx-live-progress-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

#rx-live-progress-wrap {
  flex: 1;
  height: 4px;
  background: #0f3460;
  border-radius: 2px;
  overflow: hidden;
  flex-shrink: 0;
}

#rx-live-progress-bar {
  height: 100%;
  width: 0%;
  background: #e94560;
  border-radius: 2px;
  transition: width 0.2s ease;
}

#rx-live-countdown {
  flex-shrink: 0;
  font-size: 0.75rem;
  color: #a0aec0;
  min-width: 3.5em;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Two-column row: meta table left, image right — mirrors #detail-top */
#rx-live-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: start;
}

/* Meta table — mirrors #detail-meta */
#rx-live-meta {
  background: #0f3460;
  border-radius: 6px;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 16px;
  font-size: 0.85rem;
}

#rx-live-meta .label { color: #888; }
#rx-live-meta .value { color: #e0e0e0; }

/* Wrapper holds the stable aspect-ratio box; the <img> fills it via object-fit.
   This prevents the browser's partial-PNG intrinsic dimensions from causing
   the box to shrink/grow as the image decodes line-by-line.
   Also lays out the SNR bar to the right of the image. */
#rx-live-image-wrap {
  width: 100%;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 4px;
  background: transparent;
  /* aspect-ratio is set dynamically from rx_start width/height on the inner img */
}

#rx-live-image {
  display: block;
  flex: 1;
  min-width: 0;
  object-fit: contain;
  object-position: top center; /* SSTV decodes top-to-bottom — anchor to top */
  image-rendering: pixelated;
  background: #0a0a1a;
  border-radius: 4px;
  border: 1px solid #0f3460;
}

/* Signal quality chart — mirrors #snr-chart-container */
#rx-live-snr-container {
  background: #0f3460;
  border-radius: 6px;
  padding: 12px;
  max-height: 220px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

#rx-live-snr-container h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-bottom: 8px;
  flex-shrink: 0;
}

#rx-live-snr-chart {
  width: 100%;
  height: 160px;
  max-height: 160px;
  flex-shrink: 0;
}

/* Origin map — mirrors #map-container / #map */
#rx-live-map-container {
  background: #0f3460;
  border-radius: 6px;
  padding: 12px;
}

#rx-live-map-container h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-bottom: 8px;
}

#rx-live-map { width: 100%; height: 220px; border-radius: 4px; }

#rx-live-map-no-callsign {
  color: #555;
  font-size: 0.85rem;
  padding: 8px 0;
}

/* ── Lightbox modal ── */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.88);
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}

#lightbox.open {
  display: flex;
}

/* Body holds image + download button, centered as a column */
#lightbox-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  cursor: default;
  /* Allow scrolling if 2× image is taller than viewport */
  max-height: 96vh;
  overflow-y: auto;
}

#lightbox-img {
  /* Width set to 2× naturalWidth in JS; capped by viewport */
  max-width: 96vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.8);
  image-rendering: pixelated;
}

#lightbox-download {
  display: inline-block;
  background: #0f3460;
  border: 1px solid #1e3a6e;
  border-radius: 6px;
  color: #a0c4ff;
  font-size: 0.85rem;
  padding: 6px 18px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

#lightbox-download:hover {
  background: #1a4a8a;
  border-color: #4a90d9;
}

#lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: 1px solid #555;
  border-radius: 6px;
  color: #ccc;
  font-size: 1rem;
  padding: 4px 12px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

#lightbox-close:hover {
  border-color: #eb5757;
  color: #eb5757;
}

/* Make clickable images show a zoom cursor */
#detail-image,
.thumb-card img {
  cursor: zoom-in;
}

/* ── Frequency tune row ── */
#freq-tune {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

#freq-tune label {
  font-size: 0.75rem;
  color: #888;
  white-space: nowrap;
}

#freq-input {
  width: 10ch;
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  color: #e0e0e0;
  font-size: 0.85rem;
  padding: 3px 6px;
  transition: border-color 0.15s;
}

#freq-input:focus {
  border-color: #6fcf97;
  outline: none;
}

#freq-set-btn {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  color: #6fcf97;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  padding: 3px 8px;
  transition: background 0.15s, border-color 0.15s;
}

#freq-set-btn:hover {
  background: #1a4731;
  border-color: #6fcf97;
}

#freq-status {
  font-size: 0.75rem;
  min-width: 6ch;
  white-space: nowrap;
}

#freq-status.freq-ok  { color: #6fcf97; }
#freq-status.freq-err { color: #eb5757; }

/* scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #0f3460; border-radius: 3px; }

/* ── Audio panel (right side — mirrors QSSTV spectrumWidget) ── */
#audio-panel {
  width: 180px;
  flex-shrink: 0;
  background: #16213e;
  border-left: 1px solid #0f3460;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

#audio-panel-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px 4px;
  flex-shrink: 0;
  border-bottom: 1px solid #0f3460;
}

#audio-panel-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  flex: 1;
}

/* Squelch button */
#squelch-btn {
  background: none;
  border: 1px solid #0f3460;
  border-radius: 5px;
  color: #888;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: monospace;
  line-height: 1;
  padding: 2px 5px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  flex-shrink: 0;
}

#squelch-btn:hover {
  border-color: #f2c94c;
  color: #e0e0e0;
}

#squelch-btn.active {
  background: #4a3000;
  border-color: #f2c94c;
  color: #f2c94c;
}

/* Squelch enabled AND open (signal above threshold — audio passing through) */
#squelch-btn.open {
  background: #1a4731;
  border-color: #6fcf97;
  color: #6fcf97;
}

/* Mute button */
#mute-btn {
  background: none;
  border: 1px solid #0f3460;
  border-radius: 5px;
  color: #888;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  padding: 2px 6px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  flex-shrink: 0;
}

#mute-btn:hover {
  border-color: #6fcf97;
  color: #e0e0e0;
}

#mute-btn.unmuted {
  background: #1a4731;
  border-color: #6fcf97;
  color: #6fcf97;
}

/* Audio output device selector inside audio panel */
#audio-output-select {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 4px;
  color: #a0c4ff;
  cursor: pointer;
  font-size: 0.7rem;
  padding: 2px 4px;
  max-width: 90px;
  flex-shrink: 0;
}

/* Frequency marker canvases */
#marker-spectrum,
#marker-waterfall {
  display: block;
  width: 100%;
  height: 8px;
  flex-shrink: 0;
  background: #0a0a1a;
}

/* FFT spectrum canvas */
#spectrum-canvas {
  display: block;
  width: 100%;
  flex: 1 1 0;
  min-height: 60px;
  background: #00007f; /* dark blue, matches QSSTV palette */
}

/* Waterfall canvas */
#waterfall-canvas {
  display: block;
  width: 100%;
  flex: 2 1 0;
  min-height: 120px;
  background: #000;
}

/* VU meter row */
#vu-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  flex-shrink: 0;
  border-top: 1px solid #0f3460;
}

#vu-label {
  font-size: 0.6rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  width: 22px;
  flex-shrink: 0;
}

#vu-track {
  flex: 1;
  height: 8px;
  background: #0a0a1a;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid #0f3460;
}

#vu-bar {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  transition: width 0.08s linear, background-color 0.08s linear;
  background: #6fcf97;
}

/* Display controls */
#audio-panel-controls {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2px 4px;
  padding: 4px 6px 6px;
  flex-shrink: 0;
  border-top: 1px solid #0f3460;
}

#audio-panel-controls label {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.62rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  gap: 2px;
}

#audio-panel-controls input[type="number"] {
  width: 100%;
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 4px;
  color: #e0e0e0;
  font-size: 0.75rem;
  padding: 2px 3px;
  text-align: center;
  -moz-appearance: textfield;
}

#audio-panel-controls input[type="number"]::-webkit-inner-spin-button,
#audio-panel-controls input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

#audio-panel-controls input[type="number"]:focus {
  border-color: #6fcf97;
  outline: none;
}

/* ── Metrics button (header, left of SNR bar) ── */
#metrics-btn {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  color: #a0c4ff;
  cursor: pointer;
  font-size: 0.8rem;
  padding: 3px 10px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

#metrics-btn:hover {
  background: #1a4a8a;
  border-color: #4a90d9;
  color: #e0e0e0;
}

/* ── API button (header, left of SNR bar) ── */
#api-btn {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  color: #a0c4ff;
  cursor: pointer;
  font-size: 0.8rem;
  padding: 3px 10px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

#api-btn:hover {
  background: #1a4a8a;
  border-color: #4a90d9;
  color: #e0e0e0;
}

/* ── API modal ── */
#api-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.80);
  align-items: center;
  justify-content: center;
}

#api-modal.open {
  display: flex;
}

#api-modal-box {
  background: #16213e;
  border: 1px solid #1a4a80;
  border-radius: 10px;
  width: min(780px, 96vw);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#api-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #0f3460;
  padding: 10px 14px;
  flex-shrink: 0;
}

#api-modal-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #a0c4ff;
}

#api-modal-close {
  background: none;
  border: 1px solid transparent;
  border-radius: 4px;
  color: #888;
  cursor: pointer;
  font-size: 1rem;
  padding: 2px 7px;
  transition: border-color 0.15s, color 0.15s;
}

#api-modal-close:hover {
  border-color: #eb5757;
  color: #eb5757;
}

#api-modal-body {
  padding: 16px 20px 20px;
  overflow-y: auto;
  font-size: 0.82rem;
  color: #ccc;
  line-height: 1.5;
}

.api-intro {
  margin: 0 0 14px;
  color: #aaa;
}

.api-section {
  font-size: 0.8rem;
  font-weight: 600;
  color: #a0c4ff;
  margin: 16px 0 6px;
  border-bottom: 1px solid #1a4a80;
  padding-bottom: 3px;
}

.api-endpoint {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: #0d1b2e;
  border: 1px solid #1a4a80;
  border-radius: 6px;
  padding: 8px 10px;
  word-break: break-all;
}

.api-endpoint code,
.api-endpoint pre {
  flex: 1;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.78rem;
  color: #6fcf97;
  margin: 0;
  white-space: pre-wrap;
}

.api-endpoint.api-script {
  align-items: flex-start;
}

.api-params {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
  margin-top: 6px;
}

.api-params th {
  text-align: left;
  color: #888;
  font-weight: 600;
  padding: 4px 8px;
  border-bottom: 1px solid #1a4a80;
}

.api-params td {
  padding: 4px 8px;
  border-bottom: 1px solid #0f2040;
  vertical-align: top;
}

.api-params td code {
  font-family: 'Courier New', Courier, monospace;
  color: #6fcf97;
  font-size: 0.78rem;
}

.api-copy-btn {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 4px;
  color: #a0c4ff;
  cursor: pointer;
  font-size: 0.8rem;
  padding: 2px 7px;
  flex-shrink: 0;
  transition: background 0.15s, border-color 0.15s;
}

.api-copy-btn:hover {
  background: #1a4a8a;
  border-color: #4a90d9;
}

/* ── Metrics modal ── */
#metrics-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.80);
  align-items: center;
  justify-content: center;
}

#metrics-modal.open {
  display: flex;
}

#metrics-modal-box {
  background: #16213e;
  border: 1px solid #0f3460;
  border-radius: 10px;
  width: min(720px, 96vw);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.7);
}

#metrics-modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid #0f3460;
  flex-shrink: 0;
}

#metrics-modal-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #e0e0e0;
  flex: 1;
}

#metrics-period-tabs {
  display: flex;
  gap: 4px;
}

.period-tab {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 5px;
  color: #888;
  cursor: pointer;
  font-size: 0.78rem;
  padding: 3px 10px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.period-tab:hover {
  border-color: #4a90d9;
  color: #e0e0e0;
}

.period-tab.active {
  background: #1a4a8a;
  border-color: #4a90d9;
  color: #a0c4ff;
  font-weight: 600;
}

#metrics-modal-close {
  background: none;
  border: 1px solid #555;
  border-radius: 6px;
  color: #ccc;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 3px 10px;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
}

#metrics-modal-close:hover {
  border-color: #eb5757;
  color: #eb5757;
}

/* Summary stat row */
#metrics-summary {
  display: flex;
  gap: 0;
  border-bottom: 1px solid #0f3460;
  flex-shrink: 0;
}

.metrics-stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 8px;
  border-right: 1px solid #0f3460;
}

.metrics-stat:last-child {
  border-right: none;
}

.metrics-stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #e0e0e0;
  line-height: 1;
}

.metrics-stat-value.metrics-complete { color: #6fcf97; }
.metrics-stat-value.metrics-partial  { color: #f2c94c; }

.metrics-stat-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-top: 4px;
}

/* Chart area */
#metrics-chart-wrap {
  flex: 1;
  min-height: 200px;
  padding: 16px;
  position: relative;
}

#metrics-chart {
  width: 100% !important;
  height: 100% !important;
}

/* By-mode breakdown */
#metrics-by-mode {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 16px 14px;
  border-top: 1px solid #0f3460;
  flex-shrink: 0;
}

.metrics-mode-chip {
  background: #0f3460;
  border: 1px solid #1a4a80;
  border-radius: 12px;
  color: #a0c4ff;
  font-size: 0.75rem;
  padding: 2px 10px;
  white-space: nowrap;
}

/* ── Auth modal ─────────────────────────────────────────────────────────── */
#auth-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 3000;
  align-items: center;
  justify-content: center;
}

#auth-modal.open {
  display: flex;
}

#auth-modal-box {
  background: #16213e;
  border: 1px solid #0f3460;
  border-radius: 10px;
  width: 340px;
  max-width: 95vw;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  overflow: hidden;
}

#auth-modal-header {
  background: #0f3460;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #e0e0e0;
}

#auth-modal-body {
  padding: 20px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#auth-modal-message {
  font-size: 0.88rem;
  color: #aaa;
}

#auth-password-input {
  width: 100%;
  padding: 8px 10px;
  background: #1a1a2e;
  border: 1px solid #0f3460;
  border-radius: 6px;
  color: #e0e0e0;
  font-size: 0.9rem;
  outline: none;
}

#auth-password-input:focus {
  border-color: #e94560;
}

#auth-modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

#auth-submit-btn {
  background: #e94560;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 7px 18px;
  font-size: 0.88rem;
  cursor: pointer;
  font-weight: 600;
}

#auth-submit-btn:hover { background: #c73652; }

#auth-cancel-btn {
  background: #0f3460;
  color: #aaa;
  border: none;
  border-radius: 6px;
  padding: 7px 14px;
  font-size: 0.88rem;
  cursor: pointer;
}

#auth-cancel-btn:hover { color: #e0e0e0; }

.auth-error {
  color: #e94560;
  font-size: 0.82rem;
  min-height: 1.1em;
}