:root {
  --bg-dark: #0c0e11;
  --bg-panel: #14181e;
  --bg-panel-raised: #1a1f28;
  --bg-display: #0a1a0a;
  --border-subtle: #2a3040;
  --border-active: #3a4a60;
  --text-primary: #c8cdd6;
  --text-dim: #5a6578;
  --text-display: #33ff66;
  --text-display-dim: #1a7a33;
  --accent-tx: #ff3b30;
  --accent-tx-glow: rgba(255, 59, 48, 0.4);
  --accent-rx: #30d158;
  --accent-rx-glow: rgba(48, 209, 88, 0.3);
  --accent-bank: #0a84ff;
  --accent-bank-glow: rgba(10, 132, 255, 0.25);
  --accent-selected: #ff9f0a;
  --accent-selected-glow: rgba(255, 159, 10, 0.3);
}

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

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Barlow', sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Subtle grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(42, 48, 64, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 48, 64, 0.15) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.radio-unit {
  width: 420px;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.5),
    0 20px 60px rgba(0,0,0,0.6),
    inset 0 1px 0 rgba(255,255,255,0.03);
  position: relative;
}


/* === LCD DISPLAY === */
.display {
  background: var(--bg-display);
  border: 1px solid #1a2a1a;
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 16px;
  box-shadow:
    inset 0 2px 8px rgba(0,0,0,0.5),
    0 0 12px rgba(51, 255, 102, 0.03);
  position: relative;
  overflow: hidden;
}

.display::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.08) 2px,
    rgba(0,0,0,0.08) 4px
  );
  pointer-events: none;
}

.display-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 4px;
  margin-bottom: 6px;
  border-bottom: 1px solid rgba(51, 255, 102, 0.12);
  position: relative;
  z-index: 1;
}

.topbar-item {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  color: var(--text-display);
  display: flex;
  align-items: center;
  gap: 3px;
}

.topbar-clock {
  font-size: 11px;
}

/* WiFi icon via CSS */
.wifi-icon {
  display: inline-block;
  width: 14px;
  height: 12px;
  position: relative;
}
.wifi-icon .arc {
  position: absolute;
  border: 1.5px solid var(--text-display);
  border-radius: 50%;
  border-bottom: none;
  border-left: none;
  border-right: none;
  left: 50%;
  transform: translateX(-50%);
}
.wifi-icon .arc1 { width: 14px; height: 14px; top: 0; }
.wifi-icon .arc2 { width: 9px; height: 9px; top: 3px; }
.wifi-icon .arc3 { width: 4px; height: 4px; top: 6px; }
.wifi-icon .dot {
  position: absolute;
  width: 2px; height: 2px;
  background: var(--text-display);
  border-radius: 50%;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

/* Signal bars for cellular */
.signal-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 1.5px;
  height: 11px;
}
.signal-bars .bar {
  width: 2.5px;
  background: var(--text-display);
  border-radius: 0.5px;
}
.signal-bars .bar:nth-child(1) { height: 3px; }
.signal-bars .bar:nth-child(2) { height: 5px; }
.signal-bars .bar:nth-child(3) { height: 7px; }
.signal-bars .bar:nth-child(4) { height: 9px; }
.signal-bars .bar:nth-child(5) { height: 11px; }
.signal-bars .bar.dim { opacity: 0.2; }

.net-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 8px;
  color: var(--text-display);
  letter-spacing: 0.5px;
  margin-left: 2px;
}

.batt-icon {
  display: inline-block;
  width: 18px;
  height: 9px;
  border: 1.5px solid var(--text-display);
  border-radius: 1.5px;
  position: relative;
  padding: 1px;
}
.batt-icon::after {
  content: '';
  position: absolute;
  right: -4px;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 5px;
  background: var(--text-display);
  border-radius: 0 1px 1px 0;
}
.batt-fill {
  display: block;
  width: 75%;
  height: 100%;
  background: var(--text-display);
  border-radius: 0.5px;
}

.display-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 1;
}

.display-row + .display-row { margin-top: 6px; }

.display-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  color: var(--text-display-dim);
}

.display-value {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  color: var(--text-display);
}

.display-talkgroup {
  font-family: 'Share Tech Mono', monospace;
  font-size: 28px;
  color: var(--text-display);
  text-align: center;
  padding: 6px 0;
  text-shadow: 0 0 10px rgba(51, 255, 102, 0.5);
  position: relative;
  z-index: 1;
}

.display-status {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  text-align: center;
  color: var(--text-display-dim);
  position: relative;
  z-index: 1;
}

.display-status.tx {
  color: var(--accent-tx);
  text-shadow: 0 0 8px var(--accent-tx-glow);
  animation: pulse-tx 0.6s ease-in-out infinite;
}

.display-status.rx {
  color: var(--accent-rx);
  text-shadow: 0 0 8px var(--accent-rx-glow);
}

/* Full display glow on RX */
.display.rx-active {
  border-color: rgba(48, 209, 88, 0.4);
  box-shadow:
    inset 0 2px 8px rgba(0,0,0,0.5),
    0 0 20px rgba(48, 209, 88, 0.15),
    inset 0 0 30px rgba(48, 209, 88, 0.06);
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.display.rx-active .display-talkgroup {
  color: var(--accent-rx);
  text-shadow: 0 0 12px var(--accent-rx-glow);
}

/* Full display glow on scan */
.display.scan-active {
  border-color: rgba(10, 132, 255, 0.4);
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.06), var(--bg-display));
  box-shadow:
    inset 0 2px 8px rgba(0,0,0,0.5),
    0 0 20px rgba(10, 132, 255, 0.12),
    inset 0 0 30px rgba(10, 132, 255, 0.05);
  animation: pulse-display-scan 2.5s ease-in-out infinite;
}

.display.scan-active .display-talkgroup {
  color: var(--accent-bank);
  text-shadow: 0 0 12px var(--accent-bank-glow);
}

.display.scan-active .display-value,
.display.scan-active .display-label,
.display.scan-active .display-status,
.display.scan-active .topbar-item {
  color: var(--accent-bank);
}

.display.scan-active .batt-icon { border-color: var(--accent-bank); }
.display.scan-active .batt-icon::after,
.display.scan-active .batt-fill { background: var(--accent-bank); }
.display.scan-active .wifi-icon .arc { border-color: var(--accent-bank); }
.display.scan-active .wifi-icon .dot { background: var(--accent-bank); }

@keyframes pulse-display-scan {
  0%, 100% {
    box-shadow:
      inset 0 2px 8px rgba(0,0,0,0.5),
      0 0 20px rgba(10, 132, 255, 0.12),
      inset 0 0 30px rgba(10, 132, 255, 0.05);
  }
  50% {
    box-shadow:
      inset 0 2px 8px rgba(0,0,0,0.5),
      0 0 28px rgba(10, 132, 255, 0.2),
      inset 0 0 40px rgba(10, 132, 255, 0.08);
  }
}

/* Full display glow on emergency */
.display.emg-active {
  border-color: rgba(255, 59, 48, 0.5);
  background: linear-gradient(180deg, rgba(255, 59, 48, 0.08), var(--bg-display));
  box-shadow:
    inset 0 2px 8px rgba(0,0,0,0.5),
    0 0 24px rgba(255, 59, 48, 0.2),
    inset 0 0 40px rgba(255, 59, 48, 0.06);
  animation: pulse-display-emg 1.2s ease-in-out infinite;
}

.display.emg-active .display-talkgroup {
  color: var(--accent-tx);
  text-shadow: 0 0 14px var(--accent-tx-glow);
}

.display.emg-active .display-value,
.display.emg-active .display-label,
.display.emg-active .display-status,
.display.emg-active .topbar-item {
  color: var(--accent-tx);
}

.display.emg-active .batt-icon {
  border-color: var(--accent-tx);
}

.display.emg-active .batt-icon::after,
.display.emg-active .batt-fill {
  background: var(--accent-tx);
}

.display.emg-active .wifi-icon .arc {
  border-color: var(--accent-tx);
}

.display.emg-active .wifi-icon .dot {
  background: var(--accent-tx);
}

@keyframes pulse-display-emg {
  0%, 100% {
    box-shadow:
      inset 0 2px 8px rgba(0,0,0,0.5),
      0 0 24px rgba(255, 59, 48, 0.2),
      inset 0 0 40px rgba(255, 59, 48, 0.06);
  }
  50% {
    box-shadow:
      inset 0 2px 8px rgba(0,0,0,0.5),
      0 0 36px rgba(255, 59, 48, 0.35),
      inset 0 0 60px rgba(255, 59, 48, 0.1);
  }
}

@keyframes pulse-tx {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* === BANK SELECTOR === */
.section-label {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.bank-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 16px;
}

.bank-btn {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 10px 0;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background: var(--bg-panel-raised);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
  overflow: hidden;
}

.bank-btn:hover {
  border-color: var(--border-active);
  color: var(--text-primary);
}

.bank-btn.active {
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.15), rgba(10, 132, 255, 0.05));
  border-color: var(--accent-bank);
  color: var(--accent-bank);
  box-shadow: 0 0 12px var(--accent-bank-glow), inset 0 0 12px var(--accent-bank-glow);
}

/* === TALK GROUP GRID === */
.tg-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 16px;
}

.tg-btn {
  font-family: 'Share Tech Mono', monospace;
  font-size: 12px;
  padding: 12px 4px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background: var(--bg-panel-raised);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
  line-height: 1.3;
}

.tg-btn:hover {
  border-color: var(--border-active);
  color: var(--text-primary);
  background: #1e2430;
}

.tg-btn.active {
  background: linear-gradient(180deg, rgba(255, 159, 10, 0.12), rgba(255, 159, 10, 0.04));
  border-color: var(--accent-selected);
  color: var(--accent-selected);
  box-shadow: 0 0 10px var(--accent-selected-glow), inset 0 0 10px var(--accent-selected-glow);
}

.tg-btn.scanning {
  border-color: var(--accent-bank);
  color: var(--accent-bank);
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.1), rgba(10, 132, 255, 0.03));
  box-shadow: 0 0 8px var(--accent-bank-glow), inset 0 0 6px rgba(10, 132, 255, 0.08);
}

.tg-btn.active.scanning {
  border-color: var(--accent-selected);
  color: var(--accent-selected);
  background: linear-gradient(180deg, rgba(255, 159, 10, 0.12), rgba(255, 159, 10, 0.04));
  box-shadow: 0 0 10px var(--accent-selected-glow), inset 0 0 10px var(--accent-selected-glow);
}

.tg-btn.emergency {
  border-color: var(--accent-tx);
  color: var(--accent-tx);
  background: linear-gradient(180deg, rgba(255, 59, 48, 0.15), rgba(255, 59, 48, 0.05));
  box-shadow: 0 0 10px var(--accent-tx-glow), inset 0 0 8px rgba(255, 59, 48, 0.08);
  animation: pulse-tg-emg 1.2s ease-in-out infinite;
}

/* Emergency overrides active — red takes priority over orange */
.tg-btn.active.emergency {
  border-color: var(--accent-tx);
  color: var(--accent-tx);
  background: linear-gradient(180deg, rgba(255, 59, 48, 0.25), rgba(255, 59, 48, 0.1));
  box-shadow: 0 0 14px var(--accent-tx-glow), inset 0 0 12px rgba(255, 59, 48, 0.1);
}

@keyframes pulse-tg-emg {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.tg-btn .tg-number {
  font-size: 14px;
  font-weight: bold;
  display: block;
}

.tg-btn .tg-name {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 9px;
  letter-spacing: 0.5px;
  display: block;
  margin-top: 2px;
  opacity: 0.7;
}

/* === STATUS BAR (connection + user count) === */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px;
  background: var(--bg-panel-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  margin-bottom: 10px;
}

.status-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-right {
  display: flex;
  align-items: center;
}

.online-text {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.online-text span {
  color: var(--text-primary);
}

/* === PTT BUTTON + EMERGENCY === */
.ptt-zone {
  padding-top: 4px;
}

.ptt-row {
  display: flex;
  gap: 8px;
}

.ptt-btn {
  flex: 1;
  padding: 22px 0;
  border: 2px solid var(--accent-tx);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 59, 48, 0.08), rgba(255, 59, 48, 0.02));
  color: var(--accent-tx);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.1s ease;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  position: relative;
  overflow: hidden;
}

.ptt-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-tx-glow), transparent 70%);
  opacity: 0;
  transition: opacity 0.1s ease;
}

.ptt-btn:hover {
  background: linear-gradient(180deg, rgba(255, 59, 48, 0.12), rgba(255, 59, 48, 0.04));
}

.ptt-btn.transmitting {
  background: linear-gradient(180deg, rgba(255, 59, 48, 0.3), rgba(255, 59, 48, 0.15));
  box-shadow:
    0 0 20px var(--accent-tx-glow),
    inset 0 0 20px rgba(255, 59, 48, 0.1);
  transform: scale(0.98);
}

.ptt-btn.transmitting::before {
  opacity: 1;
}

.ptt-btn.busy {
  border-color: var(--text-dim);
  color: var(--text-dim);
  background: var(--bg-panel-raised);
  cursor: not-allowed;
  opacity: 0.5;
}

.ptt-btn.busy::before {
  display: none;
}

.ptt-btn.busy:hover {
  background: var(--bg-panel-raised);
}

/* Scan button */
.scan-btn {
  width: 72px;
  padding: 22px 0;
  border: 2px solid var(--accent-bank);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.08), rgba(10, 132, 255, 0.02));
  color: var(--accent-bank);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  -webkit-user-select: none;
}

.scan-btn:hover {
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.15), rgba(10, 132, 255, 0.05));
  box-shadow: 0 0 12px var(--accent-bank-glow);
}

.scan-btn.active-scan {
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.3), rgba(10, 132, 255, 0.1));
  box-shadow: 0 0 14px var(--accent-bank-glow), inset 0 0 10px rgba(10, 132, 255, 0.15);
}

/* Emergency button */
.emg-btn {
  width: 72px;
  padding: 22px 0;
  border: 2px solid #ff6b00;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 107, 0, 0.08), rgba(255, 107, 0, 0.02));
  color: #ff6b00;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  -webkit-user-select: none;
}

.emg-btn:hover {
  background: linear-gradient(180deg, rgba(255, 107, 0, 0.15), rgba(255, 107, 0, 0.05));
  box-shadow: 0 0 12px rgba(255, 107, 0, 0.25);
}

.emg-btn.active-emergency {
  background: linear-gradient(180deg, rgba(255, 59, 48, 0.35), rgba(255, 59, 48, 0.15));
  border-color: var(--accent-tx);
  color: var(--accent-tx);
  box-shadow: 0 0 16px var(--accent-tx-glow), inset 0 0 12px rgba(255, 59, 48, 0.1);
  animation: pulse-emg 0.8s ease-in-out infinite;
}

@keyframes pulse-emg {
  0%, 100% { box-shadow: 0 0 16px var(--accent-tx-glow), inset 0 0 12px rgba(255, 59, 48, 0.1); }
  50% { box-shadow: 0 0 24px var(--accent-tx-glow), inset 0 0 20px rgba(255, 59, 48, 0.2); }
}


.conn-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-dim);
}

.conn-dot.connected { background: var(--accent-rx); box-shadow: 0 0 6px var(--accent-rx-glow); }
.conn-dot.error { background: var(--accent-tx); }

.conn-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

/* === CALLSIGN MODAL === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 32px;
  width: 340px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

.modal h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.modal p {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 20px;
  line-height: 1.5;
}

.modal input {
  width: 100%;
  padding: 12px 14px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--text-primary);
  outline: none;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.modal input:focus {
  border-color: var(--accent-bank);
  box-shadow: 0 0 8px var(--accent-bank-glow);
}

.modal input::placeholder {
  color: var(--text-dim);
  text-transform: none;
  letter-spacing: 0;
}

.modal button {
  width: 100%;
  margin-top: 16px;
  padding: 12px 0;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid var(--accent-bank);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.2), rgba(10, 132, 255, 0.05));
  color: var(--accent-bank);
  cursor: pointer;
  transition: all 0.15s ease;
}

.modal button:hover {
  background: linear-gradient(180deg, rgba(10, 132, 255, 0.3), rgba(10, 132, 255, 0.1));
  box-shadow: 0 0 12px var(--accent-bank-glow);
}