:root{--green:#08755a;--green-dark:#065541;--mint:#e6f4ee;--ink:#16372f;--muted:#63766f;--line:#d7e5df;--card:#fff;--danger:#a9342b;--shadow:0 22px 70px rgba(7,84,63,.14);font-family:Aptos,"Segoe UI",Arial,sans-serif;color:var(--ink);background:#f4faf7}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 10% 0,rgba(25,170,123,.12),transparent 28%),linear-gradient(145deg,#f2faf6,#fffdf8);color:var(--ink)}a{color:inherit}button,input{font:inherit}.btn{min-height:42px;border:1px solid transparent;border-radius:12px;padding:9px 15px;display:inline-flex;align-items:center;justify-content:center;gap:7px;text-decoration:none;font-weight:750;cursor:pointer;transition:.15s;background:#fff}.btn:hover{transform:translateY(-1px);filter:brightness(.98)}.btn-primary{background:var(--green);color:#fff}.btn-outline{border-color:var(--green);color:var(--green-dark);background:#fff}.btn-soft{background:var(--mint);color:var(--green-dark)}.btn-large{min-height:49px;padding:12px 20px}.auth-page{display:grid;place-items:center;padding:24px}.welcome-shell{width:min(1060px,100%);min-height:min(680px,calc(100vh - 48px));display:grid;grid-template-columns:1.1fr .9fr;background:var(--card);border:1px solid var(--line);border-radius:30px;overflow:hidden;box-shadow:var(--shadow)}.welcome-brand{padding:55px;background:linear-gradient(145deg,#09684f,#087b5d);color:#fff;display:flex;flex-direction:column;justify-content:center}.school-icon,.user-icon,.form-mark{display:grid;place-items:center;width:56px;height:56px;border-radius:18px;background:rgba(255,255,255,.14);font-weight:900;font-size:22px}.eyebrow{margin:30px 0 10px;text-transform:uppercase;letter-spacing:.15em;font-size:12px;font-weight:850;color:#c7eee1}.eyebrow.dark{color:var(--green);margin:0 0 8px}.welcome-brand h1{font-size:clamp(38px,6vw,62px);line-height:1.02;margin:0 0 22px;letter-spacing:-.04em}.welcome-brand>p:not(.eyebrow){max-width:600px;line-height:1.75;color:#ddf3ec}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:36px}.feature-grid span{padding:13px;border-radius:14px;background:rgba(255,255,255,.09);font-size:14px}.welcome-action{padding:55px;display:flex;flex-direction:column;justify-content:center}.user-icon{background:var(--mint);color:var(--green)}.welcome-action h2,.form-card h1{font-size:30px;margin:25px 0 10px}.welcome-action p,.form-card>p{color:var(--muted);line-height:1.7;margin:0}.auth-buttons{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:30px 0 18px}.welcome-action small{color:var(--muted);line-height:1.6}.form-shell{width:min(520px,100%)}.back-link{display:inline-block;margin-bottom:14px;text-decoration:none;font-weight:700;color:var(--green-dark)}.form-card,.panel-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:0 15px 45px rgba(20,70,55,.08)}.form-mark{background:var(--green);color:#fff;font-size:15px}.stack-form{display:grid;gap:16px;margin-top:24px}.stack-form label{display:grid;gap:7px;font-size:13px;font-weight:800}.stack-form input{width:100%;min-height:46px;border:1px solid #c8d9d2;border-radius:12px;padding:10px 13px;outline:0;background:#fff;color:var(--ink)}.stack-form input:focus{border-color:#38a181;box-shadow:0 0 0 4px #e0f4ed}.stack-form input:disabled{background:#f0f5f3;color:#6e7c77}.form-foot{text-align:center!important;margin-top:24px!important;font-size:14px}.form-foot a{font-weight:800;color:var(--green)}.alert,.flash{border-radius:14px;padding:13px 15px;font-size:14px;line-height:1.5}.alert{margin-top:13px}.alert-error{background:#fff0ee;color:#8c251d;border:1px solid #f0c5c0}.flash{position:fixed;top:15px;left:50%;transform:translateX(-50%);z-index:100;background:#173d32;color:#fff;box-shadow:var(--shadow)}.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:12px max(18px,calc((100vw - 1450px)/2));background:rgba(255,255,255,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none}.brand-mark{display:grid;place-items:center;width:43px;height:43px;border-radius:14px;background:var(--green);color:#fff;font-size:12px;font-weight:900}.brand strong,.brand small{display:block}.brand small{color:var(--muted);margin-top:2px;font-size:11px}.top-actions{display:flex;align-items:center;gap:8px}.top-actions form{margin:0}.page-shell{width:min(1450px,calc(100% - 32px));margin:0 auto;padding:28px 0 50px}.narrow-page{max-width:1000px}.page-heading{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:22px}.page-heading h1{font-size:clamp(28px,4vw,42px);margin:0;letter-spacing:-.03em}.page-heading p{color:var(--muted);margin:8px 0 0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-bottom:18px}.stats-grid article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:19px}.stats-grid strong,.stats-grid span{display:block}.stats-grid strong{font-size:30px;color:var(--green)}.stats-grid span{font-size:12px;color:var(--muted);margin-top:5px}.table-panel{padding:0;overflow:hidden}.table-scroll{overflow:auto}.admin-table{width:100%;min-width:920px;border-collapse:collapse}.admin-table th{padding:13px 15px;text-align:left;background:#edf6f2;font-size:12px;text-transform:uppercase;letter-spacing:.05em}.admin-table td{padding:14px 15px;border-top:1px solid #e3ebe7;vertical-align:middle}.admin-table td small{display:block;color:var(--muted);margin-top:5px;line-height:1.55}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#eef3f1;font-size:12px;font-weight:800}.badge-good{background:#ddf5eb;color:#086146}.badge-warn{background:#fff0d3;color:#805300}.row-actions{display:flex;gap:7px}.row-actions .btn{min-height:34px;padding:6px 9px;font-size:12px}.muted{color:var(--muted);font-size:13px}.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.panel-card h2{margin:0;font-size:20px}
@media(max-width:760px){.auth-page{padding:0}.welcome-shell{min-height:100vh;border:0;border-radius:0;display:block}.welcome-brand,.welcome-action{padding:32px 22px}.welcome-brand{min-height:auto}.welcome-brand h1{font-size:38px}.feature-grid{grid-template-columns:1fr;margin-top:24px}.welcome-action{min-height:440px}.auth-buttons{grid-template-columns:1fr}.form-shell{padding:24px 16px}.form-card{padding:25px 20px}.topbar{position:static;align-items:flex-start;padding:10px 12px}.brand small{display:none}.top-actions{justify-content:flex-end;flex-wrap:wrap}.top-actions .btn{min-height:36px;padding:6px 9px;font-size:12px}.page-shell{width:min(100% - 24px,1450px);padding-top:20px}.page-heading{align-items:flex-start;flex-direction:column}.stats-grid{grid-template-columns:1fr 1fr}.account-grid{grid-template-columns:1fr}.panel-card{padding:22px}.row-actions{flex-direction:column}.flash{top:8px;width:calc(100% - 20px);text-align:center}}
@media(max-width:390px){.top-actions .btn-soft{display:none}.stats-grid{grid-template-columns:1fr}.welcome-brand h1{font-size:34px}}

/* Thông báo đổi mật khẩu: giữ ở chính giữa kể cả khi tệp giao diện bổ sung chưa tải. */
.password-success-open{overflow:hidden}.password-success-overlay{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;width:100%;min-height:100vh;min-height:100dvh;padding:20px;background:rgba(6,49,38,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}.password-success-card{position:relative;width:min(410px,100%);margin:auto;border:1px solid #d4e5de;border-radius:24px;background:#fff;padding:30px;text-align:center;box-shadow:0 30px 100px rgba(0,0,0,.3)}.password-success-card h2{margin:14px 0 7px;font-size:24px}.password-success-card p{margin:0;color:var(--muted);line-height:1.55}.password-success-card .reload-success{display:grid;place-items:center;width:56px;height:56px;margin:0 auto;border-radius:18px;background:#dcf6e9;color:var(--green);font-size:30px;font-weight:900}.password-success-card .reload-spinner{display:block;width:28px;height:28px;margin:20px auto 0;border:3px solid #cce7dd;border-top-color:var(--green);border-radius:50%;animation:password-reload-spin .75s linear infinite}@keyframes password-reload-spin{to{transform:rotate(360deg)}}
@media(max-width:480px){.password-success-overlay{padding:16px}.password-success-card{border-radius:20px;padding:26px 20px}.password-success-card h2{font-size:21px}}

/* Thông báo hệ thống tự đóng sau khi thao tác hoàn tất. */
.flash{display:flex;align-items:center;gap:14px;width:max-content;max-width:min(760px,calc(100% - 32px));text-align:left;transition:opacity .26s ease,transform .26s ease}.flash>span{min-width:0;overflow-wrap:anywhere}.flash.is-hiding{opacity:0;transform:translate(-50%,-10px);pointer-events:none}.flash-close{display:grid;flex:0 0 30px;place-items:center;width:30px;height:30px;padding:0;border:0;border-radius:9px;background:rgba(255,255,255,.14);color:#fff;font-size:21px;line-height:1;cursor:pointer}.flash-close:hover,.flash-close:focus-visible{background:rgba(255,255,255,.25);outline:2px solid rgba(255,255,255,.7);outline-offset:1px}
@media(max-width:760px){.flash{width:calc(100% - 20px);max-width:none;text-align:left}}

/* Chọn phương thức đăng nhập bằng tài khoản/email hoặc số điện thoại. */
.login-methods{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin:0;padding:5px;border:1px solid #c8d9d2;border-radius:14px;background:#eff6f3}.login-methods legend{padding:0 5px 8px;color:var(--ink);font-size:13px;font-weight:800}.login-methods label{position:relative;display:block}.login-methods input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.login-methods span{display:flex;min-height:42px;align-items:center;justify-content:center;border-radius:10px;padding:8px 10px;color:var(--muted);font-size:13px;font-weight:800;text-align:center;cursor:pointer;transition:.16s ease}.login-methods input:checked+span{background:#fff;color:var(--green-dark);box-shadow:0 3px 12px rgba(7,84,63,.12)}.login-methods input:focus-visible+span{outline:3px solid #88cfb8;outline-offset:1px}
@media(max-width:390px){.login-methods{grid-template-columns:1fr}.login-methods span{min-height:39px}}

.password-rules{margin:-7px 0 0;padding:10px 12px;border:1px solid #d6e7e0;border-radius:11px;background:#f2f8f5;color:var(--muted);font-size:12px;line-height:1.55}.password-rules::before{content:"✓ ";color:var(--green);font-weight:900}

select{font:inherit}.stack-form select{width:100%;min-height:46px;border:1px solid #c8d9d2;border-radius:12px;padding:10px 13px;background:#fff;color:var(--ink)}.alert-warning{background:#fff6d9;color:#76520a;border:1px solid #eed99b}.guide-link{display:inline-block;margin-top:17px;color:var(--green);font-size:13px;font-weight:800}.install-shell{width:min(760px,100%);padding:28px 0}.install-card{width:100%}.install-card .eyebrow{margin:22px 0 0}.mysql-fields{border:1px solid var(--line);border-radius:16px;padding:16px;display:grid;gap:14px}.mysql-fields[hidden]{display:none}.mysql-fields legend{padding:0 8px;font-size:13px;font-weight:850;color:var(--green-dark)}.form-grid{display:grid;grid-template-columns:2fr 1fr;gap:12px}.admin-note{margin:0 0 18px}.guide-page{display:block}.guide-shell{width:min(980px,calc(100% - 28px));margin:0 auto;padding:34px 0 60px}.guide-hero{border-radius:26px;background:linear-gradient(135deg,#07654d,#0a8060);color:#fff;padding:34px;box-shadow:var(--shadow)}.guide-hero h1{font-size:clamp(30px,5vw,48px);margin:8px 0 12px}.guide-hero p{max-width:720px;line-height:1.7;color:#daf2e9}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}.guide-card{background:#fff;border:1px solid var(--line);border-radius:19px;padding:22px}.guide-card h2{margin:0 0 12px;font-size:20px}.guide-card ol,.guide-card ul{margin:0;padding-left:21px}.guide-card li{margin:9px 0;line-height:1.55}.guide-card code{background:#edf5f1;border-radius:6px;padding:2px 5px}.guide-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.check-list{list-style:none!important;padding:0!important}.check-list li{display:flex;justify-content:space-between;gap:12px;padding:10px;border-bottom:1px solid var(--line)}.status-good{color:#08755a;font-weight:850}.status-bad{color:#a9342b;font-weight:850}@media(max-width:760px){.install-shell{padding:16px}.install-card{border-radius:20px}.form-grid,.guide-grid{grid-template-columns:1fr}.guide-hero{padding:25px 20px}.guide-shell{padding-top:16px}}
.auth-divider{display:flex;align-items:center;gap:12px;margin:22px 0 14px;color:var(--muted);font-size:12px;font-weight:800}.auth-divider:before,.auth-divider:after{content:"";height:1px;flex:1;background:var(--line)}.auth-divider span{padding:0 4px}.google-login-box{display:grid;gap:8px}.google-login-button{display:flex;justify-content:center;min-height:44px}.google-login-button>div{max-width:100%!important}.google-login-status{min-height:18px;margin:0!important;text-align:center;font-size:12px;line-height:1.45;color:var(--muted)!important}.google-login-status.is-error{color:#9b2f25!important}.google-config-note{margin-top:9px;padding:11px 12px;border-radius:12px;background:#f5faf8;color:var(--muted);font-size:12px;line-height:1.55}.google-config-status{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:800}.google-config-status:before{content:"";width:8px;height:8px;border-radius:50%;background:#c88924}.google-config-status.ready:before{background:#0b8b65}.settings-grid-form .span-all{grid-column:1/-1}.switch-row{display:flex!important;align-items:center;gap:9px!important;min-height:46px}.switch-row input{width:18px!important;min-height:18px!important;margin:0}.switch-row span{font-size:13px;font-weight:800}