/* Educollab Advisor v13 — direct, visibly changed authentication UI. */
:root{--v13-blue:#3154d9;--v13-blue-2:#667eea;--v13-ink:#182033;--v13-muted:#6f7890;--v13-line:#e5e9f2;--v13-card:rgba(255,255,255,.92)}
*{box-sizing:border-box}.v13-auth-page{min-height:100vh;margin:0;font-family:"IBM Plex Sans Thai",system-ui,sans-serif;color:var(--v13-ink);background:linear-gradient(145deg,#f6f8ff 0%,#f8fbff 48%,#fffaf0 100%);overflow-x:hidden}.v13-auth-orb{position:fixed;width:330px;height:330px;border-radius:50%;filter:blur(70px);pointer-events:none;opacity:.20}.v13-auth-orb-a{left:-120px;top:8%;background:#667eea}.v13-auth-orb-b{right:-130px;bottom:3%;background:#ffc83d;opacity:.16}.v13-auth-shell{width:min(100% - 28px,850px);margin:0 auto;padding:46px 0 64px;position:relative;z-index:1}.v13-auth-panel{width:100%}.v13-brand{display:flex;justify-content:center;text-decoration:none;margin-bottom:28px}.v13-brand img{width:min(280px,70vw);max-height:88px;object-fit:contain;filter:drop-shadow(0 6px 9px rgba(23,49,114,.12))}.v13-auth-heading{text-align:center;margin:0 auto 22px;max-width:680px}.v13-auth-kicker{display:inline-flex;align-items:center;gap:7px;color:#3154d9;font-size:.72rem;font-weight:700;letter-spacing:.08em;background:rgba(49,84,217,.08);border:1px solid rgba(49,84,217,.10);padding:7px 11px;border-radius:999px;margin-bottom:12px}.v13-auth-heading h1{font-weight:700;letter-spacing:-.035em;margin:0;font-size:clamp(1.9rem,4vw,2.45rem)}.v13-auth-heading p{color:var(--v13-muted);line-height:1.75;margin:.6rem auto 0;max-width:620px}.v13-auth-card{width:min(100%,570px);margin:0 auto;padding:28px;border:1px solid rgba(219,225,238,.95);border-radius:26px;background:var(--v13-card);backdrop-filter:blur(16px);box-shadow:0 14px 35px rgba(30,53,108,.09),0 3px 9px rgba(30,53,108,.04)}.v13-register-card{width:min(100%,790px)}.v13-forgot-card{width:min(100%,590px)}.v13-auth-card .form-label{font-weight:600;color:#343c51}.v13-auth-card .form-control,.v13-auth-card .form-select{min-height:49px;border-radius:14px;border-color:#dfe4ee;background-color:rgba(255,255,255,.84);box-shadow:inset 0 1px 2px rgba(28,40,77,.025)}.v13-auth-card .form-control:focus,.v13-auth-card .form-select:focus{border-color:#7890ea;box-shadow:0 0 0 .22rem rgba(49,84,217,.10)}.v13-auth-card .input-group .form-control{border-radius:14px 0 0 14px}.v13-auth-card .input-group .btn{border-radius:0 14px 14px 0;border-color:#dfe4ee}.v13-primary-btn{border:0;border-radius:14px!important;font-weight:600;background:linear-gradient(135deg,#3154d9,#5f6ee6);box-shadow:0 10px 24px rgba(49,84,217,.22);transition:transform .18s ease,box-shadow .18s ease}.v13-primary-btn:hover{transform:translateY(-1px);box-shadow:0 13px 28px rgba(49,84,217,.27)}.v13-link{color:#3154d9;text-decoration:none}.v13-link:hover{text-decoration:underline}.v13-auth-divider{display:flex;align-items:center;gap:12px;color:#9aa2b5;font-size:.8rem;margin:23px 0}.v13-auth-divider::before,.v13-auth-divider::after{content:"";height:1px;background:#e6e9f0;flex:1}.v13-auth-note{width:min(100%,570px);margin:15px auto 0;display:flex;align-items:center;justify-content:center;gap:8px;text-align:center;color:#7c8496;font-size:.82rem}.v13-auth-note i{color:#3154d9}.v13-form-section-title{display:flex;align-items:center;gap:9px;font-weight:700;font-size:1.02rem;margin-bottom:12px}.v13-form-section-title i{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#3154d9;background:rgba(49,84,217,.09)}.v13-center-icon{display:grid;place-items:center;width:58px;height:58px;margin:0 auto 20px;border-radius:18px;font-size:1.35rem;color:#3154d9;background:linear-gradient(145deg,#f0f4ff,#e5ebff);box-shadow:0 8px 22px rgba(49,84,217,.12)}.v13-back-link{display:block;text-align:center;margin-top:22px;color:#58627a;text-decoration:none}.v13-back-link:hover{color:#3154d9}.form-text{font-size:.76rem}.alert{border-radius:14px}.form-check-input:checked{background-color:#3154d9;border-color:#3154d9}
@media(max-width:575.98px){.v13-auth-shell{width:min(100% - 20px,850px);padding:26px 0 44px}.v13-auth-card{padding:20px;border-radius:20px}.v13-brand{margin-bottom:18px}.v13-brand img{width:min(230px,72vw)}.v13-auth-heading{margin-bottom:17px}.v13-auth-heading p{font-size:.92rem}.v13-auth-kicker{font-size:.65rem}.v13-primary-btn{min-height:50px}}
@media(prefers-color-scheme:dark){[data-bs-theme="dark"] .v13-auth-page,body[data-bs-theme="dark"].v13-auth-page{--v13-ink:#f3f5fb;--v13-muted:#aeb7cb;--v13-card:rgba(25,31,47,.92);background:linear-gradient(145deg,#111522,#141927 55%,#1c1920)}[data-bs-theme="dark"] .v13-auth-card{border-color:#30384c}[data-bs-theme="dark"] .v13-auth-card .form-control,[data-bs-theme="dark"] .v13-auth-card .form-select{background:#1c2231;border-color:#3a435a;color:#f5f7fb}}