/* Appel vidéo avec le clone du Prof. Mathieu Guidère — habillage « FaceTime » (iOS) */
:root {
  --vert: #30d158;
  --rouge: #ff3b30;
  --verre: rgba(40, 40, 45, .55);
  --verre-clair: rgba(255, 255, 255, .16);
  --texte: #fff;
  --doux: rgba(255, 255, 255, .72);
  --haut: max(14px, env(safe-area-inset-top));
  --bas: max(18px, env(safe-area-inset-bottom));
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: #000;
  color: var(--texte);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  user-select: none; -webkit-user-select: none;
}
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; padding: 0; }
svg { fill: currentColor; }
.cache { display: none !important; }

/* ------------------------------------------------ vidéo du professeur (plein écran) */
.distant {
  position: fixed; inset: 0; background: #111;
  transition: filter .6s ease, transform .6s ease;
}
.distant img, .distant video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: 50% 42%;
}
.distant video { opacity: 0; transition: opacity .35s ease; }
.distant video.visible, body[data-ecran="encours"] #v-ecoute.pret { opacity: 1; }
.distant video.parle { z-index: 2; }
/* avant l'appel, la photo floutée sert de fond */
body[data-ecran="contact"] .distant, body[data-ecran="fin"] .distant, body[data-ecran="sonnerie"] .distant { filter: blur(28px) brightness(.55) saturate(1.2); transform: scale(1.15); }

.voile { position: fixed; inset: 0; pointer-events: none; z-index: 3;
  background: linear-gradient(180deg, rgba(0,0,0,.45) 0%, rgba(0,0,0,0) 22%, rgba(0,0,0,0) 62%, rgba(0,0,0,.55) 100%);
  opacity: 0; transition: opacity .4s; }
body[data-ecran="sonnerie"] .voile, body[data-ecran="encours"] .voile { opacity: 1; }

/* ------------------------------------------------ ma caméra */
.moi {
  position: fixed; z-index: 4; overflow: hidden; background: #1c1c1e;
  inset: 0; border-radius: 0;
  opacity: 0; pointer-events: none;
  transition: all .55s cubic-bezier(.2, .8, .2, 1);
}
.moi video { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
.moi-vide { position: absolute; inset: 0; display: none; place-items: center; background: #2c2c2e; }
.moi-vide svg { width: 42%; max-width: 120px; fill: #8e8e93; }
.moi.sans-camera video { display: none; }
.moi.sans-camera .moi-vide { display: grid; }
body[data-ecran="sonnerie"] .moi:not(.sans-camera) { opacity: 1; }
body[data-ecran="encours"] .moi {
  opacity: 1; pointer-events: auto;
  inset: auto; top: calc(var(--haut) + 64px); right: 14px;
  width: clamp(92px, 27vw, 150px); aspect-ratio: 3 / 4; height: auto;
  border-radius: 16px; box-shadow: 0 8px 28px rgba(0,0,0,.45);
  cursor: grab; touch-action: none;
}
body[data-ecran="encours"] .moi.glisse { transition: none; cursor: grabbing; }

/* ------------------------------------------------ écran contact */
.ecran-contact, .ecran-fin {
  position: fixed; inset: 0; z-index: 6;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: var(--haut) 16px var(--bas); text-align: center;
  opacity: 0; pointer-events: none; transition: opacity .4s;
}
body[data-ecran="contact"] .ecran-contact, body[data-ecran="fin"] .ecran-fin { opacity: 1; pointer-events: auto; }
.carte { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.avatar {
  width: 132px; height: 132px; border-radius: 50%; overflow: hidden;
  box-shadow: 0 10px 40px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.15);
  margin-bottom: 14px;
}
.avatar.petit { width: 96px; height: 96px; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.nom { font-size: clamp(26px, 7vw, 34px); font-weight: 600; letter-spacing: -.02em; margin: 0; }
.sous { margin: 0 0 34px; color: var(--doux); font-size: 17px; }
.actions { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.legende { font-size: 13px; color: var(--doux); }
.btn-appel {
  width: 74px; height: 74px; border-radius: 50%; background: var(--vert);
  display: grid; place-items: center; box-shadow: 0 6px 22px rgba(48, 209, 88, .4);
  transition: transform .15s;
}
.btn-appel:active { transform: scale(.93); }
.btn-appel svg { width: 34px; height: 34px; fill: #fff; }
.form-code { display: flex; gap: 8px; margin-bottom: 24px; }
.form-code input {
  width: 190px; padding: 12px 14px; border-radius: 12px; border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.12); color: #fff; font-size: 16px; outline: none;
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
}
.form-code button { padding: 0 16px; border-radius: 12px; background: var(--vert); font-weight: 600; }

/* ------------------------------------------------ bandeau du haut */
.bandeau {
  position: fixed; z-index: 5; left: 0; right: 0; top: 0;
  padding: calc(var(--haut) + 8px) 16px 10px; text-align: center;
  opacity: 0; transform: translateY(-8px); transition: all .4s; pointer-events: none;
}
body[data-ecran="sonnerie"] .bandeau, body[data-ecran="encours"] .bandeau { opacity: 1; transform: none; }
.b-nom { font-size: 22px; font-weight: 600; letter-spacing: -.01em; text-shadow: 0 1px 8px rgba(0,0,0,.5); }
.b-statut { font-size: 15px; color: var(--doux); margin-top: 2px; font-variant-numeric: tabular-nums; text-shadow: 0 1px 6px rgba(0,0,0,.5); }
body[data-ecran="sonnerie"] .bandeau { top: 18vh; }
body[data-ecran="sonnerie"] .b-nom { font-size: 30px; }
body[data-ecran="sonnerie"] .b-statut::after { content: ""; display: inline-block; width: 1.2em; text-align: left; animation: points 1.4s steps(4) infinite; }
@keyframes points { 0% { content: ""; } 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } }
body[data-ecran="encours"] .bandeau { padding-right: calc(14px + clamp(92px, 27vw, 150px) + 10px); padding-left: 16px; text-align: left; }
body[data-ecran="encours"] .b-nom { font-size: 17px; }
body[data-ecran="encours"] .b-statut { font-size: 14px; }

/* ------------------------------------------------ pastille d'état + sous-titres */
.etat-pastille {
  position: fixed; z-index: 5; left: 50%; bottom: calc(var(--bas) + 112px);
  transform: translateX(-50%); display: none; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px; font-size: 13px; font-weight: 500;
  background: var(--verre); -webkit-backdrop-filter: blur(24px) saturate(1.6); backdrop-filter: blur(24px) saturate(1.6);
  white-space: nowrap;
}
.etat-pastille i { width: 8px; height: 8px; border-radius: 50%; background: #8e8e93; transform: scale(calc(1 + var(--niv, 0) * 1.2)); transition: transform .08s; }
body[data-ecran="encours"][data-etat="ecoute"] .etat-pastille,
body[data-ecran="encours"][data-etat="reflexion"] .etat-pastille,
body[data-ecran="encours"][data-etat="muet"] .etat-pastille,
body[data-ecran="encours"][data-etat="attente"] .etat-pastille { display: inline-flex; }
body[data-etat="ecoute"] .etat-pastille i { background: var(--vert); }
body[data-etat="reflexion"] .etat-pastille i { background: #ffd60a; animation: pulse 1s ease-in-out infinite; }
body[data-etat="muet"] .etat-pastille i { background: var(--rouge); }
@keyframes pulse { 50% { opacity: .35; } }

.sous-titres {
  position: fixed; z-index: 5; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--bas) + 150px); width: min(92vw, 560px); margin: 0;
  text-align: center; font-size: clamp(16px, 4.4vw, 19px); line-height: 1.38; font-weight: 500;
  text-shadow: 0 1px 3px rgba(0,0,0,.9), 0 0 14px rgba(0,0,0,.6);
  pointer-events: none; min-height: 1em;
  display: none;
}
body[data-ecran="encours"].cc .sous-titres { display: block; }
.sous-titres .question { color: var(--doux); font-style: italic; font-weight: 400; }
.sous-titres:empty { display: none !important; }

/* ------------------------------------------------ barre de commandes (verre dépoli) */
.commandes {
  position: fixed; z-index: 7; left: 50%; bottom: var(--bas);
  transform: translate(-50%, 140%); opacity: 0;
  display: flex; gap: clamp(10px, 3.4vw, 18px); align-items: flex-start;
  padding: 14px clamp(14px, 4vw, 22px) 10px; border-radius: 30px;
  background: var(--verre); -webkit-backdrop-filter: blur(30px) saturate(1.8); backdrop-filter: blur(30px) saturate(1.8);
  transition: transform .45s cubic-bezier(.2, .8, .2, 1), opacity .3s;
}
body[data-ecran="sonnerie"] .commandes, body[data-ecran="encours"] .commandes { transform: translate(-50%, 0); opacity: 1; }
body[data-ecran="sonnerie"] .commandes .cmd:not(.rouge) { opacity: .45; pointer-events: none; }
.cmd { display: flex; flex-direction: column; align-items: center; gap: 6px; width: 54px; }
.cmd svg { width: 54px; height: 54px; padding: 14px; border-radius: 50%; background: var(--verre-clair); transition: background .15s, color .15s, transform .12s; }
.cmd:active svg { transform: scale(.92); }
.cmd span { font-size: 11px; color: var(--doux); }
.cmd[aria-pressed="true"] svg { background: #fff; color: #000; }
.cmd.rouge svg { background: var(--rouge); color: #fff; }
.cmd .i-off { display: none; }
#b-micro[aria-pressed="true"] .i-on { display: none; }
#b-micro[aria-pressed="true"] .i-off { display: block; }
#b-cc.actif svg { background: #fff; color: #000; }

/* ------------------------------------------------ tiroir : écrire + idées */
.tiroir {
  position: fixed; z-index: 7; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--bas) + 104px); width: min(94vw, 520px);
  display: flex; flex-direction: column; gap: 8px;
}
body:not([data-ecran="encours"]) .tiroir { display: none !important; }
.idees { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; padding-bottom: 2px; }
.idees::-webkit-scrollbar { display: none; }
.idee {
  flex: none; padding: 8px 13px; border-radius: 999px; font-size: 14px;
  background: var(--verre); -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,.12);
}
.form-question { display: flex; gap: 8px; }
.form-question input {
  flex: 1; min-width: 0; padding: 12px 16px; border-radius: 999px; border: 1px solid rgba(255,255,255,.14);
  background: var(--verre); color: #fff; font-size: 16px; outline: none;
  -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px);
  user-select: text; -webkit-user-select: text;
}
.form-question button { width: 44px; height: 44px; border-radius: 50%; background: #0a84ff; display: grid; place-items: center; flex: none; }
.form-question button svg { width: 22px; height: 22px; }
body.tiroir-ouvert .sous-titres { bottom: calc(var(--bas) + 210px); }
body.tiroir-ouvert .etat-pastille { display: none !important; }

/* ------------------------------------------------ fin d'appel */
.ecran-fin { gap: 6px; }
.fin-nom { font-size: 26px; font-weight: 600; }
.fin-duree { color: var(--doux); font-size: 16px; margin-bottom: 30px; font-variant-numeric: tabular-nums; }

@media (min-aspect-ratio: 4/5) {
  /* écran large (ordinateur, tablette couchée) : comme FaceTime sur Mac, la vidéo portrait entière au centre */
  body[data-ecran="encours"] .distant { background: radial-gradient(ellipse at 50% 45%, #2c2c2e 0%, #000 75%); }
  body[data-ecran="encours"] .distant img, body[data-ecran="encours"] .distant video { object-fit: contain; }
  body[data-ecran="encours"] .moi { width: clamp(150px, 18vw, 260px); aspect-ratio: 4 / 3; }
  body[data-ecran="encours"] .bandeau { padding-right: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}