/* ── Reset & tokens ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0d1117;
  --bg2:       #161b22;
  --bg3:       #21262d;
  --border:    #30363d;
  --text:      #e6edf3;
  --muted:     #8b949e;
  --blue:      #3b82f6;
  --blue-lt:   #60a5fa;
  --purple:    #a78bfa;
  --green:     #34d399;
  --amber:     #fbbf24;
  --red:       #f87171;

  --calling-glow: 0 0 40px rgba(59,130,246,0.25);
  --next-glow:    0 0 40px rgba(167,139,250,0.20);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --font-ui: 'Inter', sans-serif;
  --font-display: 'Orbitron', sans-serif;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  overflow: hidden;
}

/* ── Utilities ──────────────────────────────────────────────── */
.hidden  { display: none !important; }
.active  { display: flex; }

/* ── Overlay ────────────────────────────────────────────────── */
.overlay {
  position: fixed; inset: 0; z-index: 100;
  align-items: center; justify-content: center;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
}

/* ── Selector card ──────────────────────────────────────────── */
.selector-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 3rem;
  max-width: 520px; width: 92%;
  text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  animation: fadeUp 0.4s ease;
}

.selector-logo {
  width: 72px; height: 72px;
  margin: 0 auto 1.25rem;
}
.selector-logo svg { width: 100%; height: 100%; }

.selector-title {
  font-size: 1.75rem; font-weight: 900;
  background: linear-gradient(135deg, var(--blue-lt), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: .25rem;
}
.selector-subtitle {
  color: var(--muted); font-size: .95rem; margin-bottom: 1.75rem;
}
.selector-label {
  font-size: .85rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: .08em;
  margin-bottom: 1rem;
}

.totem-buttons {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: .75rem; margin-bottom: 1rem;
}

.totem-btn {
  padding: .75rem 1.25rem;
  background: var(--bg3); color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .95rem; font-weight: 600;
  cursor: pointer; transition: all .2s;
}
.totem-btn:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(59,130,246,0.4);
}
.totem-btn.primary {
  background: linear-gradient(135deg, var(--blue), var(--purple));
  border-color: transparent; color: #fff;
}
.totem-btn.primary:hover {
  opacity: .9; transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(167,139,250,0.45);
}
.totem-btn.large { padding: 1rem 2rem; font-size: 1.05rem; }

.custom-id-row {
  display: flex; gap: .5rem;
}
.custom-id-row input {
  flex: 1; padding: .7rem 1rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: .95rem;
}
.custom-id-row input:focus {
  outline: none; border-color: var(--blue);
}

/* ── App layout ─────────────────────────────────────────────── */
#app {
  display: flex; flex-direction: column;
  height: 100vh; overflow: hidden;
  position: relative;
}
#app.hidden { display: none; }

/* ── Header ─────────────────────────────────────────────────── */
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 1.5rem;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0; gap: 1rem;
  z-index: 10;
}

.header-left {
  display: flex; align-items: center; gap: .6rem;
  min-width: 140px;
}
.pulse-dot {
  width: 10px; height: 10px;
  border-radius: 50%; background: var(--muted);
  transition: background .4s;
}
.pulse-dot.connected    { background: var(--green); animation: pulse 2s infinite; }
.pulse-dot.polling      { background: #f59e0b; animation: pulse 2s infinite; }
.pulse-dot.disconnected { background: var(--red); }
.connection-label { font-size: .78rem; color: var(--muted); }

.header-center {
  flex: 1; text-align: center;
}
.header-title {
  font-size: 1rem; font-weight: 700; color: var(--text);
}
.header-totem {
  font-size: .85rem; color: var(--blue-lt); margin-left: .4rem;
}

.header-right {
  display: flex; align-items: center; gap: .5rem;
  min-width: 180px; justify-content: flex-end;
}
.clock {
  font-family: var(--font-display);
  font-size: .95rem; color: var(--blue-lt);
  letter-spacing: .06em;
}

.icon-btn {
  width: 36px; height: 36px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn:hover { color: var(--text); border-color: var(--blue); background: var(--bg); }
.icon-btn.active { color: var(--amber); border-color: var(--amber); }

/* ── Warning banner ─────────────────────────────────────────── */
.warning-banner {
  background: linear-gradient(90deg, #78350f, #92400e, #78350f);
  border-bottom: 1px solid #b45309;
  padding: .5rem 0; overflow: hidden;
  flex-shrink: 0;
}
.warning-scroll {
  display: inline-block;
  white-space: nowrap;
  animation: marquee 20s linear infinite;
  font-size: .9rem; font-weight: 600; color: var(--amber);
  padding: 0 2rem;
}

/* ── Main grid ──────────────────────────────────────────────── */
.main-grid {
  flex: 1; display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem; padding: 1rem;
  overflow: hidden;
  min-height: 0;
}

/* ── Panel ──────────────────────────────────────────────────── */
.panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column;
  overflow: hidden;
  position: relative;
}
.panel-calling { box-shadow: var(--calling-glow); }
.panel-next    { box-shadow: var(--next-glow); }

.panel-header {
  display: flex; align-items: center; gap: .75rem;
  padding: 1rem 1.5rem;
  flex-shrink: 0;
}
.calling-header {
  background: linear-gradient(135deg, #1e3a5f 0%, #1a2b4a 100%);
  border-bottom: 1px solid rgba(59,130,246,0.3);
}
.next-header {
  background: linear-gradient(135deg, #2a1f4a 0%, #1f1a3a 100%);
  border-bottom: 1px solid rgba(167,139,250,0.3);
}

.panel-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.calling-header .panel-icon { background: rgba(59,130,246,0.2); color: var(--blue-lt); }
.next-header    .panel-icon { background: rgba(167,139,250,0.2); color: var(--purple); }
.panel-icon svg { width: 18px; height: 18px; }

.panel-header h2 {
  font-size: 1rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
}
.calling-header h2 { color: var(--blue-lt); }
.next-header    h2 { color: var(--purple); }

.panel-body {
  flex: 1; overflow-y: auto; padding: 1rem;
  display: flex; flex-direction: column; gap: .6rem;
}
.panel-body::-webkit-scrollbar { width: 4px; }
.panel-body::-webkit-scrollbar-track { background: transparent; }
.panel-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Turn cards ─────────────────────────────────────────────── */
.turn-card {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius-md);
  animation: slideIn .35s cubic-bezier(.22,1,.36,1);
  transition: border-color .3s, box-shadow .3s;
}
.turn-card:hover {
  border-color: var(--blue); box-shadow: 0 0 20px rgba(59,130,246,0.15);
}
.turn-card.new {
  border-color: var(--blue);
  box-shadow: 0 0 24px rgba(59,130,246,0.35);
  animation: newCard .5s ease;
}

.turn-number {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 900;
  color: var(--blue-lt);
  min-width: 80px; text-align: center;
  line-height: 1;
}
.panel-next .turn-number { color: var(--purple); font-size: 1.5rem; }

.turn-info { flex: 1; }
.turn-box {
  font-size: .8rem; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted);
  margin-bottom: .15rem;
}
.turn-box-name {
  font-size: 1rem; font-weight: 700; color: var(--text);
}

.turn-badge {
  padding: .2rem .7rem;
  border-radius: 999px; font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em;
}
.badge-calling { background: rgba(59,130,246,0.2); color: var(--blue-lt); border: 1px solid rgba(59,130,246,0.4); }
.badge-waiting { background: rgba(167,139,250,0.2); color: var(--purple); border: 1px solid rgba(167,139,250,0.4); }

/* ── Empty state ────────────────────────────────────────────── */
.empty-state {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: var(--muted); gap: .5rem; padding: 2rem 0;
}
.empty-icon { font-size: 2.5rem; opacity: .5; }
.empty-state p { font-size: .9rem; }

/* ── Footer ─────────────────────────────────────────────────── */
.app-footer {
  display: flex; align-items: center; justify-content: center;
  gap: 1rem; padding: .6rem 1.5rem;
  background: var(--bg2); border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.stat-pill {
  display: flex; align-items: center; gap: .4rem;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 1.2rem; font-weight: 700; color: var(--blue-lt);
}
.stat-num.small { font-size: .85rem; font-family: var(--font-ui); color: var(--text); }
.stat-lbl { font-size: .78rem; color: var(--muted); }
.stat-divider { width: 1px; height: 20px; background: var(--border); }

/* ── Audio overlay ──────────────────────────────────────────── */
#audio-overlay {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  background: rgba(13, 17, 23, 0.75);
  backdrop-filter: blur(8px);
}
#audio-overlay.hidden { display: none !important; }

.audio-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 400px; width: 90%;
  text-align: center;
  display: flex; flex-direction: column;
  align-items: center; gap: 1rem;
  animation: fadeUp .35s ease;
}
.audio-icon { font-size: 3rem; }
.audio-card h2 { font-size: 1.4rem; font-weight: 800; }
.audio-card p  { color: var(--muted); font-size: .9rem; line-height: 1.6; }

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes newCard {
  0%   { transform: scale(1); box-shadow: 0 0 0 rgba(59,130,246,0); }
  40%  { transform: scale(1.03); box-shadow: 0 0 40px rgba(59,130,246,0.6); }
  100% { transform: scale(1); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(52,211,153,0.5); }
  50%       { box-shadow: 0 0 0 6px rgba(52,211,153,0); }
}
@keyframes marquee {
  from { transform: translateX(100vw); }
  to   { transform: translateX(-100%); }
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 700px) {
  .main-grid { grid-template-columns: 1fr; }
  .header-left .connection-label { display: none; }
  .clock { font-size: .75rem; }
  .turn-number { font-size: 1.5rem; min-width: 60px; }
}