/* ── Reset & base ── */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--text);
  transition: background 0.3s;
}

.hidden { display: none !important; }

/* ════════════════════════════════════════
   THÈMES — variables CSS
   ════════════════════════════════════════ */

/* ── 1. Glassmorphism (défaut) ── */
[data-theme="glass"], :root {
  --font: 'Inter', -apple-system, sans-serif;
  --bg: transparent;
  --surface: rgba(255,255,255,0.12);
  --surface2: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.22);
  --text: #ffffff;
  --text-muted: rgba(255,255,255,0.55);
  --text-dim: rgba(255,255,255,0.38);
  --accent: rgba(255,255,255,0.25);
  --accent-solid: #a78bfa;
  --me-bubble: rgba(255,255,255,0.22);
  --me-border: rgba(255,255,255,0.35);
  --other-bubble: rgba(0,0,0,0.18);
  --other-border: rgba(255,255,255,0.1);
  --btn-mic: linear-gradient(135deg,#a78bfa,#ec4899);
  --btn-mic-shadow: rgba(167,139,250,0.4);
  --btn-sm-bg: rgba(255,255,255,0.12);
  --btn-sm-border: rgba(255,255,255,0.22);
  --btn-active-bg: rgba(74,222,128,0.2);
  --btn-active-border: rgba(74,222,128,0.5);
  --online-dot: #4ade80;
  --pill-me-bg: rgba(255,255,255,0.25);
  --pill-me-border: rgba(255,255,255,0.5);
  --pill-me-text: #ffffff;
  --pill-other-bg: rgba(255,255,255,0.12);
  --pill-other-border: rgba(255,255,255,0.2);
  --pill-other-text: rgba(255,255,255,0.8);
  --input-bg: rgba(255,255,255,0.1);
  --input-border: rgba(255,255,255,0.25);
  --input-focus: rgba(255,255,255,0.55);
  --input-text: #ffffff;
  --input-placeholder: rgba(255,255,255,0.4);
  --join-bg: rgba(255,255,255,0.22);
  --join-border: rgba(255,255,255,0.4);
  --join-text: #ffffff;
  --card-bg: rgba(255,255,255,0.1);
  --card-border: rgba(255,255,255,0.2);
  --scrollbar: rgba(255,255,255,0.2);
  --system-color: rgba(255,255,255,0.45);
  --translation-color: rgba(255,255,255,0.52);
  --meta-color: rgba(255,255,255,0.35);
  --footer-hint: rgba(255,255,255,0.35);
}

/* ── 2. Dark Mode ── */
[data-theme="dark"] {
  --font: 'Inter', -apple-system, sans-serif;
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #21253a;
  --border: #2d3147;
  --text: #e8eaf6;
  --text-muted: #5c6080;
  --text-dim: #8890b0;
  --accent-solid: #7c6fff;
  --me-bubble: #7c6fff;
  --me-border: transparent;
  --other-bubble: #21253a;
  --other-border: #2d3147;
  --btn-mic: linear-gradient(135deg,#7c6fff,#b06fff);
  --btn-mic-shadow: rgba(124,111,255,0.4);
  --btn-sm-bg: #21253a;
  --btn-sm-border: #2d3147;
  --btn-active-bg: rgba(0,229,160,0.1);
  --btn-active-border: #00e5a0;
  --online-dot: #00e5a0;
  --pill-me-bg: rgba(124,111,255,0.15);
  --pill-me-border: rgba(124,111,255,0.4);
  --pill-me-text: #7c6fff;
  --pill-other-bg: #21253a;
  --pill-other-border: #2d3147;
  --pill-other-text: #8890b0;
  --input-bg: #21253a;
  --input-border: #2d3147;
  --input-focus: #7c6fff;
  --input-text: #e8eaf6;
  --input-placeholder: #5c6080;
  --join-bg: linear-gradient(135deg,#7c6fff,#b06fff);
  --join-border: transparent;
  --join-text: #ffffff;
  --card-bg: #1a1d27;
  --card-border: #2d3147;
  --scrollbar: #2d3147;
  --system-color: #5c6080;
  --translation-color: #5c6080;
  --meta-color: #3d4260;
  --footer-hint: #5c6080;
}

/* ── 3. Minimaliste ── */
[data-theme="minimal"] {
  --font: 'DM Sans', -apple-system, sans-serif;
  --bg: #f8f8f5;
  --surface: #ffffff;
  --surface2: #f4f4f0;
  --border: #e8e8e2;
  --text: #1a1a18;
  --text-muted: #9a9a94;
  --text-dim: #c0c0ba;
  --accent-solid: #1a1a18;
  --me-bubble: #1a1a18;
  --me-border: transparent;
  --other-bubble: #ffffff;
  --other-border: #e8e8e2;
  --btn-mic: #1a1a18;
  --btn-mic-shadow: rgba(0,0,0,0.18);
  --btn-sm-bg: #f4f4f0;
  --btn-sm-border: #e8e8e2;
  --btn-active-bg: #f0fdf4;
  --btn-active-border: #22c55e;
  --online-dot: #22c55e;
  --pill-me-bg: #1a1a18;
  --pill-me-border: #1a1a18;
  --pill-me-text: #ffffff;
  --pill-other-bg: #f4f4f0;
  --pill-other-border: #e8e8e2;
  --pill-other-text: #9a9a94;
  --input-bg: #f4f4f0;
  --input-border: #e8e8e2;
  --input-focus: #1a1a18;
  --input-text: #1a1a18;
  --input-placeholder: #c0c0ba;
  --join-bg: #1a1a18;
  --join-border: transparent;
  --join-text: #ffffff;
  --card-bg: #ffffff;
  --card-border: #e8e8e2;
  --scrollbar: #e8e8e2;
  --system-color: #c0c0ba;
  --translation-color: #b0b0aa;
  --meta-color: #c0c0ba;
  --footer-hint: #c0c0ba;
}

/* ── 4. Vivid ── */
[data-theme="vivid"] {
  --font: 'Nunito', -apple-system, sans-serif;
  --bg: #fff9f0;
  --surface: #ffffff;
  --surface2: #fdf5ff;
  --border: #f0e8ff;
  --text: #2d2d2d;
  --text-muted: #b0a0c0;
  --text-dim: #c4b0d0;
  --accent-solid: #7c4dff;
  --me-bubble: linear-gradient(135deg,#7c4dff,#e040fb);
  --me-border: transparent;
  --other-bubble: #ffffff;
  --other-border: #f0e8ff;
  --btn-mic: linear-gradient(135deg,#ff6b9d,#ffa500);
  --btn-mic-shadow: rgba(255,107,157,0.4);
  --btn-sm-bg: #f8f0ff;
  --btn-sm-border: #e8d5ff;
  --btn-active-bg: #e8fdf0;
  --btn-active-border: #86efac;
  --online-dot: #22c55e;
  --pill-me-bg: #ede9fe;
  --pill-me-border: #c4b5fd;
  --pill-me-text: #7c4dff;
  --pill-other-bg: #fff3e0;
  --pill-other-border: #fcd9a0;
  --pill-other-text: #c06000;
  --input-bg: #fdf8ff;
  --input-border: #e8d5ff;
  --input-focus: #7c4dff;
  --input-text: #2d2d2d;
  --input-placeholder: #c4b0d0;
  --join-bg: linear-gradient(135deg,#7c4dff,#e040fb);
  --join-border: transparent;
  --join-text: #ffffff;
  --card-bg: #ffffff;
  --card-border: #f0e8ff;
  --scrollbar: #e8d5ff;
  --system-color: #c4b0d0;
  --translation-color: #b8a8c8;
  --meta-color: #c4b0d0;
  --footer-hint: #c4b0d0;
}

/* ════════════════════════════════════════
   FOND THÈME GLASS
   ════════════════════════════════════════ */
#glass-bg {
  position: fixed; inset: 0; z-index: -1;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 40%, #f64f59 100%);
  display: none;
}
[data-theme="glass"] #glass-bg { display: block; }

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}
.blob1 { width: 400px; height: 400px; background: #ff6b9d; top: -120px; right: -100px; }
.blob2 { width: 350px; height: 350px; background: #4ecdc4; bottom: -80px; left: -80px; }
.blob3 { width: 250px; height: 250px; background: #ffe66d; top: 40%; left: 30%; }

/* ════════════════════════════════════════
   SÉLECTEUR DE THÈME
   ════════════════════════════════════════ */
.theme-picker {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
}

.theme-swatch {
  width: 26px; height: 26px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s;
  position: relative;
}

.theme-swatch:hover { transform: scale(1.15); }
.theme-swatch.active { border-color: white; box-shadow: 0 0 0 2px rgba(0,0,0,0.2); }

.theme-swatch[data-theme="glass"]   { background: linear-gradient(135deg, #667eea, #f64f59); }
.theme-swatch[data-theme="dark"]    { background: linear-gradient(135deg, #1a1d27, #7c6fff); }
.theme-swatch[data-theme="minimal"] { background: linear-gradient(135deg, #f8f8f5, #1a1a18); }
.theme-swatch[data-theme="vivid"]   { background: linear-gradient(135deg, #ff6b9d, #7c4dff); }

/* ── Étiquette au survol ── */
.theme-swatch::after {
  content: attr(data-label);
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.6rem;
  white-space: nowrap;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity 0.15s;
  pointer-events: none;
}
.theme-swatch:hover::after { opacity: 1; }

/* ════════════════════════════════════════
   ÉCRAN DE CONNEXION
   ════════════════════════════════════════ */
#screen-select {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100dvh;
}

.select-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 44px 38px 36px;
  text-align: center;
  max-width: 340px;
  width: 90%;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.app-logo {
  margin-bottom: 8px;
  display: flex;
  justify-content: center;
}
.app-logo img {
  width: 80px;
  height: 80px;
  display: block;
  margin: 0 auto;
}
[data-theme="dark"] .app-logo-inner,
[data-theme="vivid"] .app-logo-inner {
  display: inline-block;
  padding: 12px;
  border-radius: 20px;
  background: var(--btn-mic);
  box-shadow: 0 6px 20px var(--btn-mic-shadow);
}

.select-card h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

[data-theme="vivid"] .select-card h1 {
  background: linear-gradient(135deg,#7c4dff,#ff6b9d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.select-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.form-group { margin-bottom: 12px; text-align: left; }

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: 12px;
  font-size: 0.95rem;
  color: var(--input-text);
  outline: none;
  transition: border-color 0.15s;
  font-family: var(--font);
}

.form-group input::placeholder { color: var(--input-placeholder); }

.form-group input:focus,
.form-group select:focus { border-color: var(--input-focus); }

[data-theme="glass"] .form-group select option,
[data-theme="dark"] .form-group select option {
  background: #3a2060;
  color: white;
}

.btn-join {
  width: 100%;
  padding: 13px;
  background: var(--join-bg);
  border: 1.5px solid var(--join-border);
  border-radius: 12px;
  color: var(--join-text);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
  transition: all 0.15s;
  font-family: var(--font);
  box-shadow: 0 4px 14px var(--btn-mic-shadow, rgba(0,0,0,0.1));
}

.btn-join:hover { opacity: 0.9; transform: translateY(-1px); }

.theme-picker-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  margin-top: 20px;
}

/* ════════════════════════════════════════
   ÉCRAN CHAT
   ════════════════════════════════════════ */
#screen-chat {
  display: flex;
  flex-direction: column;
  height: 100dvh;
}

/* ── Header ── */
header {
  background: var(--surface);
  padding: 13px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  gap: 10px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-logo-box {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.header-logo-box img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.header-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-users {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.header-user {
  font-size: 0.78rem;
  background: var(--pill-other-bg);
  border: 1.5px solid var(--pill-other-border);
  border-radius: 20px;
  padding: 4px 10px;
  color: var(--pill-other-text);
  font-weight: 500;
  display: flex; align-items: center; gap: 5px;
}

.header-user.me {
  background: var(--pill-me-bg);
  border-color: var(--pill-me-border);
  color: var(--pill-me-text);
  font-weight: 700;
}

.user-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--online-dot);
  box-shadow: 0 0 5px var(--online-dot);
  flex-shrink: 0;
}

/* Bouton thème dans header */
#btn-theme {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--btn-sm-bg);
  border: 1px solid var(--btn-sm-border);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s;
  position: relative;
}

#btn-theme:hover { background: var(--surface2); }

.theme-dropdown {
  position: absolute;
  top: 38px; right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px;
  display: flex;
  gap: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ── Messages ── */
#messages {
  flex: 1;
  overflow-y: auto;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#messages::-webkit-scrollbar { width: 3px; }
#messages::-webkit-scrollbar-track { background: transparent; }
#messages::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 3px; }

.msg-system {
  text-align: center;
  font-size: 0.73rem;
  color: var(--system-color);
  padding: 2px 0;
}

.msg-share-prompt {
  background: var(--surface);
  border: 1.5px solid var(--accent-solid);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 8px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}
.msg-share-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
}
.msg-share-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.msg-share-url {
  font-size: 0.75rem;
  font-family: monospace;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  word-break: break-all;
  color: var(--text);
}
.msg-share-btn {
  background: var(--accent-solid);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}
.msg-share-btn:hover { opacity: 0.85; }

.message {
  max-width: 76%;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.message.me    { align-self: flex-end; align-items: flex-end; }
.message.other { align-self: flex-start; align-items: flex-start; }

.message-sender {
  font-size: 0.71rem;
  color: var(--text-muted);
  padding: 0 4px;
  font-weight: 600;
}

.message-bubble {
  padding: 11px 15px;
  border-radius: 18px;
  font-size: 0.93rem;
  line-height: 1.5;
}

.message.me .message-bubble {
  background: var(--me-bubble);
  color: white;
  border: 1px solid var(--me-border);
  border-bottom-right-radius: 5px;
}

.message.other .message-bubble {
  background: var(--other-bubble);
  color: var(--text);
  border: 1px solid var(--other-border);
  border-bottom-left-radius: 5px;
}

[data-theme="minimal"] .message.me .message-bubble { color: #ffffff; }

.message-translation {
  font-size: 0.78rem;
  color: var(--translation-color);
  font-style: italic;
  padding: 0 4px;
}

.message-translation::before { content: "→ "; }

.message-footer {}

.message-meta {
  font-size: 0.68rem;
  color: var(--meta-color);
  padding: 0 4px;
}

/* ── Footer ── */
footer {
  background: var(--surface);
  padding: 14px 20px 26px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.footer-controls {
  display: flex;
  gap: 14px;
  align-items: center;
}

#recording-indicator {
  font-size: 0.82rem;
  color: #ef4444;
  font-weight: 600;
  animation: pulse 1s infinite;
}

#vad-listening {
  font-size: 0.82rem;
  color: var(--online-dot);
  font-weight: 600;
  animation: pulse 2s infinite;
}

#pause-indicator {
  font-size: 0.82rem;
  color: #f59e0b;
  font-weight: 600;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* Bouton micro */
#btn-mic {
  width: 70px; height: 70px;
  border-radius: 50%;
  border: none;
  background: var(--btn-mic);
  font-size: 1.75rem;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 0 6px 20px var(--btn-mic-shadow, rgba(0,0,0,0.2));
  user-select: none;
  -webkit-user-select: none;
  display: flex; align-items: center; justify-content: center;
}

#btn-mic:active, #btn-mic.recording {
  background: linear-gradient(135deg,#ef4444,#f97316) !important;
  transform: scale(0.94);
  box-shadow: 0 4px 14px rgba(239,68,68,0.4) !important;
}

/* Boutons secondaires */
#btn-vad, #btn-tts, #btn-pause {
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--btn-sm-bg);
  border: 1.5px solid var(--btn-sm-border);
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
  -webkit-user-select: none;
  display: flex; align-items: center; justify-content: center;
}

#btn-vad.active, #btn-tts.active, #btn-pause.active {
  background: var(--btn-active-bg);
  border-color: var(--btn-active-border);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--btn-active-border) 20%, transparent);
}

#btn-vad.active { animation: pulse 2s infinite; }

#btn-tts.muted { opacity: 0.4; }

#btn-pause.active {
  background: rgba(245,158,11,0.15);
  border-color: rgba(245,158,11,0.5);
  box-shadow: 0 0 0 3px rgba(245,158,11,0.15);
}

.footer-hint {
  font-size: 0.72rem;
  color: var(--footer-hint);
}

#btn-share {
  background: var(--btn-sm-bg);
  border: 1.5px solid var(--btn-sm-border);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-family: var(--font);
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.15s;
}

#btn-share:hover {
  color: var(--text);
  border-color: var(--accent-solid);
}