/* Tài khoản bé: avatar kiểu Duolingo, ô nhập PIN, trang Hồ sơ, nút Thoát, trợ lý AI. */

/* ── Avatar ───────────────────────────────────────────── */
.av { position: relative; display: inline-block; flex: none; --s: 48px; width: var(--s); height: var(--s); vertical-align: middle; }
.av-sm { --s: 30px; } .av-md { --s: 48px; } .av-lg { --s: 92px; } .av-xl { --s: 132px; } .av-door { --s: 150px; }
.av-img {
  position: absolute; inset: 0; border-radius: 50%; background-color: #fff; background-size: cover; background-position: 50% 20%;
  border: calc(var(--s) * .05 + 1px) solid #fff; box-shadow: 0 2px 8px rgba(15, 30, 60, .22);
}
.av.cloud .av-img { background-color: #a3c8db; background-size: 150%; background-position: 50% 72%; }  /* ảnh Mây bông có chữ tiêu đề ở trên → phóng vào giữa */
.av-acc { position: absolute; left: 10%; width: 80%; top: calc(var(--s) * -0.36); pointer-events: none; filter: drop-shadow(0 2px 2px rgba(0, 0, 0, .25)); }
.av-acc svg { width: 100%; height: auto; display: block; }
.av-emo {
  position: absolute; right: calc(var(--s) * -0.08); bottom: calc(var(--s) * -0.06); font-size: calc(var(--s) * .34); line-height: 1;
  background: #fff; border-radius: 50%; padding: calc(var(--s) * .04); box-shadow: 0 2px 6px rgba(0, 0, 0, .2);
}
.av-sm .av-acc { top: -8px; }
.av-sm .av-emo { font-size: 12px; padding: 1px; right: -5px; bottom: -4px; }
.frame-blue .av-img { border-color: #4a9dff; }
.frame-pink .av-img { border-color: #ff8fb1; }
.frame-gold .av-img { border-color: #ffc83d; box-shadow: 0 0 0 2px #fff3c4, 0 0 14px rgba(255, 190, 40, .7); }
.frame-fire .av-img { border-color: #ff6a2a; box-shadow: 0 0 0 2px #ffd166, 0 0 16px rgba(255, 90, 30, .7); }

/* Màn chọn bé: avatar ở giữa cửa */
.door-hero { position: absolute; top: 70px; left: 50%; margin-left: -75px; width: 150px; height: 150px; }
.door .door-hero .av { --s: 150px; }
.door-mascot { position: absolute; inset: 0; border-radius: 50%; background-color: #fff; background-repeat: no-repeat; border: 5px solid #fff; }
.door.speed .door-mascot { background-size: 175%; background-position: 50% 12%; box-shadow: 0 0 0 5px #ffc83d, 0 8px 22px rgba(0, 0, 0, .3); }
.door.cloud .door-mascot { background-color: #a3c8db; background-size: 150%; background-position: 50% 62%; box-shadow: 0 0 0 5px #ffd6e8, 0 8px 22px rgba(120, 160, 210, .35); }
.door.speed .door-hero .av-img { box-shadow: 0 0 0 5px #ffc83d, 0 8px 22px rgba(0, 0, 0, .3); }
.door.cloud .door-hero .av-img { box-shadow: 0 0 0 5px #ffd6e8, 0 8px 22px rgba(120, 160, 210, .35); }

/* Thanh trên: avatar + tên + Thoát */
.me-pill { display: inline-flex; align-items: center; gap: 8px; padding: 3px 12px 3px 4px; border-radius: 99px; background: var(--paper); border: 1px solid var(--line); text-decoration: none; color: var(--ink); font-weight: 800; font-size: 15px; }
.exit-btn { border: 1px solid var(--line); background: var(--paper); cursor: pointer; font: inherit; font-size: 14px; font-weight: 700; color: var(--ink-2); }
.exit-btn:hover { color: var(--bad); }
@media (max-width: 640px) { .me-pill span { display: none; } .me-pill { padding: 3px; } }

/* ── Ô nhập PIN ───────────────────────────────────────── */
.pinpad { text-align: center; max-width: 340px; padding-top: 28px; }
.pinpad .av { margin: 0 auto 10px; display: block; }
.pin-dots { display: flex; justify-content: center; gap: 14px; margin: 14px 0 6px; }
.pin-dots i { width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid #9aa7b4; transition: background .1s, transform .1s; }
.pin-dots i.on { background: var(--sky); border-color: var(--sky); transform: scale(1.1); }
.pin-dots.shake { animation: shake .4s; }
@keyframes shake { 20%, 60% { transform: translateX(-8px); } 40%, 80% { transform: translateX(8px); } }
.pin-err { color: var(--bad); min-height: 20px; }
.keys { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 8px; }
.key { height: 60px; border-radius: 18px; border: 1px solid var(--line); background: #f7f9fc; font: 800 24px var(--font); color: var(--ink); cursor: pointer; box-shadow: 0 3px 0 #dde3ea; }
.key:active { transform: translateY(2px); box-shadow: 0 1px 0 #dde3ea; }
.key.ghost { font-size: 15px; color: var(--ink-3); background: transparent; box-shadow: none; }

/* ── Trang Hồ sơ ──────────────────────────────────────── */
.profile-head { display: flex; align-items: center; gap: 22px; padding-top: 34px; }
.ph-stats { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 6px; font-weight: 700; color: var(--ink-2); }
.picks { display: grid; gap: 10px; }
.picks.cards { grid-template-columns: repeat(auto-fill, minmax(78px, 1fr)); }
.picks.acc, .picks.frame { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
.picks.emo { grid-template-columns: repeat(auto-fill, minmax(52px, 1fr)); }
.pick { position: relative; border: 2px solid var(--line); background: var(--paper); border-radius: 16px; padding: 6px; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 4px; font: inherit; color: var(--ink); min-height: 52px; justify-content: center; font-size: 24px; }
.pick.on { border-color: var(--sky); box-shadow: 0 0 0 3px rgba(74, 125, 255, .25); }
.pick.locked { opacity: .55; }
.pick .lock { position: absolute; top: 4px; right: 6px; font-size: 14px; }
.pk-img { width: 64px; height: 64px; border-radius: 50%; background-size: cover; background-position: 50% 20%; }
.pk-acc { width: 70px; } .pk-acc svg { width: 100%; height: auto; display: block; }
.pk-none { font-size: 22px; color: var(--ink-3); height: 42px; display: grid; place-items: center; }
.pk-name { font-size: 12px; font-weight: 700; color: var(--ink-2); text-align: center; line-height: 1.25; }
.pk-frame { width: 36px; height: 36px; border-radius: 50%; border: 5px solid #fff; background: #e9eef6; box-shadow: 0 0 0 1px var(--line); }
.pk-frame.frame-blue { border-color: #4a9dff; } .pk-frame.frame-pink { border-color: #ff8fb1; }
.pk-frame.frame-gold { border-color: #ffc83d; box-shadow: 0 0 10px rgba(255, 190, 40, .7); } .pk-frame.frame-fire { border-color: #ff6a2a; box-shadow: 0 0 10px rgba(255, 90, 30, .7); }
.profile-actions { margin-top: 6px; }
.btn.danger-soft { color: var(--bad); }

/* ── Trợ lý AI ────────────────────────────────────────── */
.ai-fab {
  position: fixed; right: 18px; bottom: calc(92px + env(safe-area-inset-bottom)); z-index: 25; display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px 10px 10px; border-radius: 99px; border: 0; cursor: pointer; font: 800 16px var(--font); color: #fff;
  background: linear-gradient(135deg, #5b6cff, #9b5cff); box-shadow: 0 8px 22px rgba(91, 108, 255, .45);
}
.ai-fab .ico { width: 30px; height: 30px; vertical-align: 0; }
.ai-panel {
  position: fixed; right: 12px; bottom: calc(84px + env(safe-area-inset-bottom)); z-index: 30; width: min(440px, calc(100vw - 24px));
  height: min(620px, calc(100vh - 140px)); display: flex; flex-direction: column; background: var(--paper); border-radius: 24px;
  box-shadow: 0 18px 50px rgba(20, 30, 70, .3); border: 1px solid var(--line); overflow: hidden;
}
.ai-head { display: flex; align-items: center; gap: 10px; padding: 12px 14px; color: #fff; background: linear-gradient(135deg, #5b6cff, #9b5cff); }
.ai-head .ico { width: 34px; height: 34px; }
.ai-head b { font-size: 17px; }
.ai-head small { display: block; opacity: .9; font-size: 12px; }
.ai-close { margin-left: auto; background: rgba(255, 255, 255, .2); border: 0; color: #fff; width: 34px; height: 34px; border-radius: 50%; font-size: 20px; cursor: pointer; }
.ai-msgs { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; background: #f6f8ff; }
.ai-msg { max-width: 88%; padding: 10px 13px; border-radius: 16px; font-size: 16px; line-height: 1.5; white-space: normal; }
.ai-msg.user { align-self: flex-end; background: var(--sky); color: #fff; border-bottom-right-radius: 4px; }
.ai-msg.model { align-self: flex-start; background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.ai-msg.model p { margin: 0 0 6px; } .ai-msg.model p:last-child { margin: 0; }
.ai-msg.wait { color: var(--ink-3); font-style: italic; }
.ai-chips { display: flex; gap: 6px; flex-wrap: wrap; padding: 8px 12px 0; background: var(--paper); }
.ai-chip { border: 1px solid #cdd6ff; background: #eef1ff; color: #3d4bd6; border-radius: 99px; padding: 5px 11px; font: 700 13.5px var(--font); cursor: pointer; }
.ai-form { display: flex; gap: 8px; padding: 10px 12px 12px; background: var(--paper); }
.ai-form textarea { flex: 1; resize: none; border: 1px solid var(--line); border-radius: 14px; padding: 9px 12px; font: 16px var(--font); max-height: 110px; }
.ai-form button { border: 0; border-radius: 14px; padding: 0 16px; background: var(--sky); color: #fff; font: 800 16px var(--font); cursor: pointer; }
.ai-form button:disabled { opacity: .5; }
.ai-note { font-size: 12px; color: var(--ink-3); padding: 0 14px 10px; background: var(--paper); }

/* ── Phụ huynh: tài khoản các bé ──────────────────────── */
.acct-row { display: flex; gap: 18px; align-items: flex-start; padding: 22px 0 10px; border-top: 1px solid var(--line); }
.acct-row:first-of-type { border-top: 0; }
.acct-av { padding-top: 14px; }
.acct-main { flex: 1; min-width: 0; }
.acct-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0 12px; }