:root {
  --bg: #0a0a0d;
  --ink: #f2f1ee;
  --ink-dim: rgba(242, 241, 238, 0.62);
  --ink-faint: rgba(242, 241, 238, 0.38);
  --accent: #7c8cff;
  --accent-ink: #0a0a0d;
  --live: #4ade80;
  --error: #f87171;
  --panel: rgba(18, 18, 24, 0.72);
  --panel-border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", "SF Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  overflow: hidden;
}

#app {
  position: relative;
  width: 100vw;
  height: 100dvh;
  overflow: hidden;
}

/* ── Stage ─────────────────────────────────────────────────────────── */

#stage {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 20%, #17171f 0%, #0a0a0d 70%);
}

#stage canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

#loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  background: var(--bg);
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  transition: opacity 0.5s ease;
}

#loading.done {
  opacity: 0;
  pointer-events: none;
}

/* ── Topbar ────────────────────────────────────────────────────────── */

#topbar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: max(18px, env(safe-area-inset-top)) 20px 40px;
  background: linear-gradient(to bottom, rgba(10, 10, 13, 0.85) 0%, rgba(10, 10, 13, 0) 100%);
  pointer-events: none;
}

#topbar > * {
  pointer-events: auto;
}

#identity h1 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

#identity p {
  margin: 4px 0 0;
  font-size: 0.78rem;
  color: var(--ink-faint);
  max-width: 44ch;
}

/* ── Icon buttons ──────────────────────────────────────────────────── */

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  color: var(--ink-dim);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.icon-btn:hover {
  color: var(--ink);
  border-color: rgba(255, 255, 255, 0.18);
}

.icon-btn.active {
  color: var(--error);
  border-color: rgba(248, 113, 113, 0.4);
}

/* ── Subtitles ─────────────────────────────────────────────────────── */

#subtitles {
  position: absolute;
  left: 50%;
  bottom: 148px;
  transform: translate(-50%, 8px);
  z-index: 8;
  max-width: min(560px, 86vw);
  text-align: center;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(12px);
  font-size: 0.92rem;
  line-height: 1.4;
  color: var(--ink);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

#subtitles.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ── Controls ──────────────────────────────────────────────────────── */

#controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 48px 20px max(28px, env(safe-area-inset-bottom));
  background: linear-gradient(to top, rgba(10, 10, 13, 0.9) 0%, rgba(10, 10, 13, 0) 100%);
}

#caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  min-height: 1em;
  transition: color 0.2s ease;
}

#caption.live {
  color: var(--ink-dim);
}

#caption.error {
  color: var(--error);
}

#buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

#main-btn {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 14px 32px;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--ink);
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

#main-btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

#main-btn:active:not(:disabled) {
  transform: translateY(0);
}

#main-btn:disabled {
  cursor: default;
  opacity: 0.55;
}

#main-btn.live {
  background: var(--live);
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.15), 0 8px 24px rgba(0, 0, 0, 0.35);
}

/* ── Settings dialog ───────────────────────────────────────────────── */

dialog#settings {
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 0;
  background: #121218;
  color: var(--ink);
  width: min(420px, 92vw);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

dialog#settings::backdrop {
  background: rgba(6, 6, 8, 0.6);
  backdrop-filter: blur(4px);
}

dialog#settings form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
}

dialog#settings h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

dialog#settings label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--ink-dim);
}

dialog#settings label.check-row {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}

dialog#settings select,
dialog#settings input[type="url"],
dialog#settings textarea {
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 9px 11px;
  outline: none;
  resize: vertical;
}

dialog#settings select:focus,
dialog#settings input[type="url"]:focus,
dialog#settings textarea:focus {
  border-color: var(--accent);
}

dialog#settings input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 4px;
}

.dialog-actions button.primary {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 9px 22px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--ink);
  cursor: pointer;
}

/* ── Small screens ─────────────────────────────────────────────────── */

@media (max-width: 480px) {
  #identity p {
    display: none;
  }

  #subtitles {
    bottom: 132px;
  }
}