/* ═══ 韋恩互動美語 2.0 — 共用主題 ═══ */
:root{
  --bg:#0D0D1A; --card:#161628; --card2:#1C1C32;
  --txt:#F0F0FF; --muted:#8f8fb0; --dim:#555570;
  --primary:#6C63FF; --primary-l:#8B85FF;
  --pink:#FF6B9D; --green:#00D4AA; --orange:#FFB347; --red:#FF6B6B;
  --border:rgba(108,99,255,.18);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--txt);font-family:'Inter','Noto Sans TC',sans-serif;min-height:100vh}
a{color:inherit}
button{font-family:inherit}

/* orbs */
.orbs{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.orbs span{position:absolute;border-radius:50%;filter:blur(100px);opacity:.12;animation:orbF 16s ease-in-out infinite}
.orbs span:nth-child(1){width:520px;height:520px;background:var(--primary);top:-140px;left:-140px}
.orbs span:nth-child(2){width:380px;height:380px;background:var(--pink);bottom:-100px;right:-90px;animation-delay:5s}
.orbs span:nth-child(3){width:300px;height:300px;background:var(--green);top:48%;left:55%;animation-delay:9s}
@keyframes orbF{0%,100%{transform:translate(0,0)}50%{transform:translate(28px,-20px) scale(1.05)}}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 22px;background:rgba(13,13,26,.88);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.tb-logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1rem;text-decoration:none}
.tb-logo .ic{width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--pink));font-size:16px}
.tb-right{display:flex;align-items:center;gap:9px}
.user-chip{display:flex;align-items:center;gap:7px;padding:5px 12px;border-radius:20px;font-size:.78rem;font-weight:600;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1)}
.role-badge{padding:2px 8px;border-radius:10px;font-size:.62rem;font-weight:800}
.rb-admin{background:rgba(255,107,107,.2);color:#ff9b9b}
.rb-teacher{background:rgba(255,179,71,.2);color:#ffd08a}
.rb-student{background:rgba(108,99,255,.22);color:#b3aeff}
.rb-elementary{background:rgba(0,212,170,.18);color:#5eead4}
.btn-sm{padding:6px 13px;border-radius:14px;border:1px solid rgba(255,255,255,.14);background:transparent;
  color:var(--muted);font-size:.74rem;font-weight:600;cursor:pointer;transition:.2s}
.btn-sm:hover{background:rgba(255,80,80,.14);color:#ff8f8f;border-color:rgba(255,80,80,.3)}

/* generic */
.container{position:relative;z-index:1;max-width:1080px;margin:0 auto;padding:26px 20px 60px}
.card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:14px;border:none;
  background:linear-gradient(135deg,var(--primary),#9b6cff);color:#fff;font-size:.9rem;font-weight:700;cursor:pointer;transition:.2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(108,99,255,.4)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn.green{background:linear-gradient(135deg,#00D4AA,#00a887)}
.btn.pink{background:linear-gradient(135deg,#FF6B9D,#ff8fb3)}
.btn.ghost{background:rgba(255,255,255,.06);border:1px solid var(--border);color:var(--muted)}
.btn.ghost:hover{box-shadow:none;color:var(--txt)}
input,select,textarea{width:100%;padding:11px 14px;border-radius:12px;border:1.5px solid var(--border);
  background:var(--card2);color:var(--txt);font-size:.9rem;font-family:inherit;outline:none;transition:.2s}
input:focus,select:focus,textarea:focus{border-color:var(--primary)}
label{font-size:.78rem;font-weight:700;color:var(--muted);display:block;margin-bottom:6px}

/* toast */
#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(80px);z-index:999;
  padding:12px 24px;border-radius:16px;background:#23233c;border:1px solid var(--border);
  color:var(--txt);font-size:.86rem;font-weight:600;opacity:0;transition:.3s;pointer-events:none;max-width:88vw}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* tabs */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.tab{padding:9px 18px;border-radius:14px;border:1.5px solid var(--border);background:transparent;
  color:var(--muted);font-size:.84rem;font-weight:700;cursor:pointer;transition:.2s}
.tab:hover{border-color:var(--primary)}
.tab.active{background:rgba(108,99,255,.18);border-color:var(--primary);color:var(--primary-l)}

/* misc */
.grid2{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.grid3{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.spin{display:inline-block;width:18px;height:18px;border-radius:50%;border:2.5px solid rgba(255,255,255,.25);
  border-top-color:#fff;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.badge{display:inline-block;padding:3px 10px;border-radius:10px;font-size:.68rem;font-weight:800}
.fade-in{animation:fadeIn .35s ease both}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:rgba(108,99,255,.3);border-radius:5px}
::-webkit-scrollbar-track{background:transparent}

/* ═══ 品牌標示 ═══ */
.school-badge{display:inline-flex;align-items:center;gap:4px;margin-left:10px;padding:3px 11px;border-radius:20px;
  font-size:.64rem;font-weight:800;letter-spacing:.03em;white-space:nowrap;
  color:#FFD98A;background:linear-gradient(135deg,rgba(255,179,71,.16),rgba(255,107,157,.12));
  border:1px solid rgba(255,179,71,.35)}
@media(max-width:560px){.school-badge{display:none}}

/* site footer */
.site-footer{margin-top:60px;padding:26px 24px 30px;border-top:1px solid var(--border);
  background:rgba(255,255,255,.02)}
.sf-inner{max-width:1120px;margin:0 auto;display:flex;flex-direction:column;gap:10px;text-align:center}
.sf-brand{display:flex;flex-direction:column;gap:7px;align-items:center}
.sf-logo{font-weight:900;font-size:.9rem;color:var(--txt)}
.sf-ver{font-size:.66rem;color:var(--muted);font-weight:600}
.sf-custom{font-size:.82rem;color:var(--muted);line-height:1.6}
.sf-custom strong{color:#FFD98A;font-weight:800}
.sf-meta{font-size:.7rem;color:var(--dim,rgba(255,255,255,.35));display:flex;gap:8px;flex-wrap:wrap;justify-content:center;line-height:1.6}
.sf-dot{opacity:.5}
.sf-links{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;font-size:.78rem}
.sf-links a{color:var(--muted);text-decoration:none;transition:.2s}
.sf-links a:hover{color:var(--primary-l)}

/* ═══ KM 客服小幫手 widget ═══ */
#kbFab{position:fixed;right:22px;bottom:22px;z-index:9000;width:58px;height:58px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,#6C63FF,#FF6B9D);box-shadow:0 6px 24px rgba(108,99,255,.45);
  display:flex;align-items:center;justify-content:center;transition:.25s}
#kbFab:hover{transform:scale(1.08)}
#kbFab.kb-hide{opacity:0;pointer-events:none;transform:scale(.6)}
.kb-fab-icon{font-size:1.6rem}
#kbPanel{position:fixed;right:22px;bottom:22px;z-index:9001;width:min(380px,calc(100vw - 30px));height:min(560px,calc(100vh - 60px));
  background:#191932;border:1px solid rgba(255,255,255,.12);border-radius:20px;box-shadow:0 18px 60px rgba(0,0,0,.55);
  display:flex;flex-direction:column;overflow:hidden;opacity:0;pointer-events:none;transform:translateY(16px) scale(.97);transition:.25s}
#kbPanel.kb-open{opacity:1;pointer-events:auto;transform:none}
.kb-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;
  background:linear-gradient(135deg,rgba(108,99,255,.25),rgba(255,107,157,.18));border-bottom:1px solid rgba(255,255,255,.08)}
.kb-head-l{display:flex;align-items:center;gap:11px}
.kb-avatar{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.kb-head strong{font-size:.9rem}
.kb-head p{font-size:.68rem;color:var(--muted);margin-top:2px}
#kbClose{background:none;border:none;color:var(--muted);font-size:1rem;cursor:pointer;padding:6px}
#kbClose:hover{color:#fff}
.kb-body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.kb-msg{max-width:86%;padding:10px 14px;border-radius:15px;font-size:.82rem;line-height:1.65;word-break:break-word}
.kb-bot{align-self:flex-start;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-bottom-left-radius:5px}
.kb-user{align-self:flex-end;background:rgba(108,99,255,.3);border:1px solid rgba(108,99,255,.35);border-bottom-right-radius:5px}
.kb-quick{display:flex;gap:7px;flex-wrap:wrap;padding:0 14px 10px}
.kb-chip{padding:6px 12px;border-radius:14px;border:1px solid rgba(108,99,255,.4);background:rgba(108,99,255,.12);
  color:var(--primary-l,#c8c3ff);font-size:.72rem;cursor:pointer;transition:.2s}
.kb-chip:hover{background:rgba(108,99,255,.28)}
.kb-input{display:flex;gap:8px;padding:12px 14px;border-top:1px solid rgba(255,255,255,.08)}
.kb-input input{flex:1;padding:10px 14px;border-radius:13px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:#fff;font-size:.82rem;outline:none}
.kb-input input:focus{border-color:#6C63FF}
.kb-input button{width:42px;border-radius:13px;border:none;background:linear-gradient(135deg,#6C63FF,#FF6B9D);color:#fff;font-size:1rem;cursor:pointer}
.kb-input button:disabled{opacity:.5}
.kb-dots{display:inline-flex;gap:4px;padding:4px 2px}
.kb-dots i{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:kbBlink 1.2s infinite}
.kb-dots i:nth-child(2){animation-delay:.2s}
.kb-dots i:nth-child(3){animation-delay:.4s}
@keyframes kbBlink{0%,80%,100%{opacity:.25}40%{opacity:1}}
@media(max-width:480px){#kbPanel{right:15px;bottom:15px}}