/* DarkChat — Style mobile uniquement */
:root {
  color-scheme: dark;
  --bg: #0f1115;
  --surface: #161a22;
  --surface-2: #1c2230;
  --text: #e6e8ee;
  --muted: #9aa3b2;
  --accent: #4c7cff;
  --accent-2: #7aa2ff;
  --success: #23d18b;
  --danger: #ff6b6b;
  --shadow: rgba(0,0,0,0.4);
  --phone-w: 322px; /* largeur téléphone en jeu (selon capture 610×322) */
  --phone-h: 610px; /* hauteur téléphone en jeu */
  --scale: 1; /* échelle dynamique pour adapter au viewport */
  --frame-left: 0px; /* décalage horizontal du wrapper */
  --frame-top: 0px;  /* décalage vertical du wrapper */
  --phone-border: 1px; /* épaisseur de la bordure du téléphone */
  /* marges de sécurité autour du viewport (anti-coupe) */
  --safe-left: 12px;
  --safe-right: 12px;
  --safe-top: 12px;
  --safe-bottom: 12px;
  /* décalage horizontal manuel (négatif = vers la gauche) */
  --offset-x: -8px;
}

* { box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
}

/* Wrapper qui prend la taille réelle (après scaling) pour éviter les scrollbars */
.frame {
  position: fixed;
  left: calc(var(--frame-left) + var(--offset-x));
  top: var(--frame-top);
  width: calc((var(--phone-w) + 2 * var(--phone-border)) * var(--scale));
  height: calc((var(--phone-h) + 2 * var(--phone-border)) * var(--scale));
  overflow: hidden;
}

/* Conteneur format téléphone */
.phone {
  width: var(--phone-w);
  height: var(--phone-h);
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
  border: var(--phone-border) solid #202938;
  border-radius: 22px;
  box-shadow: 0 14px 40px var(--shadow);
  overflow: hidden;
  position: relative;
  transform: scale(var(--scale));
  transform-origin: top center;
}

.topbar {
  position: sticky;
  top: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
  height: calc(56px + env(safe-area-inset-top));
  padding: calc(8px + env(safe-area-inset-top)) 14px 8px;
  background: rgba(16, 20, 28, 0.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #202938;
  z-index: 10;
}
.title { font-weight: 600; letter-spacing: 0.3px; }
.status { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(35, 209, 139, 0.6);
}

.messages {
  position: absolute;
  inset: 64px 0 68px 0; /* topbar + composer */
  padding: 14px 14px 80px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* masquer les scrollbars sur mobile */
.messages::-webkit-scrollbar { width: 0; height: 0; }
.messages { scrollbar-width: none; }

.message {
  display: flex;
  max-width: 86%;
}
.message.me { justify-content: flex-end; align-self: flex-end; }
.message.other { justify-content: flex-start; align-self: flex-start; }

.bubble {
  position: relative;
  padding: 10px 12px;
  border-radius: 14px;
  line-height: 1.35;
  font-size: 14.5px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.35);
  word-wrap: break-word;
  white-space: pre-wrap;
}

.message.me .bubble {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff;
  border-bottom-right-radius: 6px;
}
.message.other .bubble {
  background: #11161f;
  color: var(--text);
  border: 1px solid #1f2737;
  border-bottom-left-radius: 6px;
}

.meta { margin-top: 4px; font-size: 11px; color: var(--muted); }
.message.me .meta { text-align: right; }

.composer {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: rgba(16, 20, 28, 0.75);
  border-top: 1px solid #202938;
  backdrop-filter: blur(10px);
}

.input {
  resize: none;
  width: 100%;
  max-height: 120px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #243046;
  background: #0f141d;
  color: var(--text);
  outline: none;
  transition: border-color .15s ease;
}
.input::placeholder { color: #7b8798; }
.input:focus { border-color: var(--accent); }

.send {
  width: 42px; height: 42px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 8px 20px rgba(76, 124, 255, 0.35);
  transition: transform .08s ease, filter .2s ease;
}
.send:active { transform: translateY(1px); filter: brightness(.95); }

/* Sur grands écrans, garder le format téléphone centré sans élargir */
@media (min-width: 768px) {
  body { padding: 18px; }
}