:root{--bg:#f5f8f8;--surface:#fff;--ink:#182c36;--muted:#74858d;--border:#e8eff0;--accent:#167f69;--accent2:#1fab82;--mint:#e7f6ef;--nav:#15323d;--navlight:#23434e;--shadow:0 8px 30px rgba(17,47,55,.05);--radius:18px}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button,input,textarea,select{outline-offset:2px}a{color:var(--accent)}svg{flex-shrink:0}.app-shell{display:flex;min-height:100vh}.sidebar{width:248px;background:var(--nav);color:#dce9e8;position:fixed;left:0;top:0;bottom:0;z-index:50;display:flex;flex-direction:column;padding:30px 16px 19px}.brand{display:flex;gap:12px;align-items:center;padding:0 15px 29px;border-bottom:1px solid rgba(255,255,255,.09)}.brand-mark{width:40px;height:40px;background:linear-gradient(145deg,#31c599,#177d69);border-radius:13px;display:grid;place-items:center;color:#fff;font-size:27px;font-weight:700}.brand h1{margin:0;font-size:20px;letter-spacing:-.7px;color:white}.brand 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svg{height:16px;width:16px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:#096854}.btn-subtle{background:white;border-color:#dfe9e9;color:#425c62}.btn-subtle:hover{background:#f2f7f6}.btn-dark{background:var(--nav);color:#fff}.btn-danger{background:#fff2f1;color:#ad4845;border-color:#ffe3df}.btn-sm{padding:7px 10px;min-height:31px;font-size:11px}.btn-link{padding:0;background:none;border:0;color:var(--accent);font-size:12px;font-weight:800}.grid{display:grid;gap:18px}.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:minmax(0,1.55fr) minmax(280px,1fr)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);min-width:0}.card-pad{padding:22px}.card-head{padding:21px 23px 0;display:flex;justify-content:space-between;align-items:center;gap:12px}.card-head 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p{margin:0;color:var(--muted);font-size:11px;line-height:1.55}.material-icon{height:41px;width:41px;border-radius:12px;background:#e5f3ed;display:grid;place-items:center;color:#168469}.material-icon svg{height:20px;width:20px}.material-link{display:inline-block;margin-top:10px;font-size:11px;font-weight:800;overflow-wrap:anywhere}.report-insight{padding:17px;background:#f7faf9;border-radius:13px;margin:10px 0;font-size:12px;line-height:1.6}.report-insight strong{display:block;color:#2a5c51;margin-bottom:5px}.report-insight p{margin:0;color:#627a7c}.modal-overlay{position:fixed;inset:0;z-index:200;background:#09232bbb;backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:15px}.modal{width:min(100%,640px);max-height:min(92vh,920px);overflow:auto;background:#fff;border-radius:20px;box-shadow:0 24px 80px #091a2255}.modal.wide{width:min(100%,770px)}.modal-head{padding:22px 27px 16px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:12px}.modal-head h3{margin:0;font-size:19px}.modal-content{padding:23px 27px 27px}.close-btn{border:0;background:#f2f6f6;width:32px;height:32px;border-radius:9px;font-size:22px;color:#688087}.toast{position:fixed;right:24px;bottom:22px;z-index:500;background:#153941;color:white;border-radius:11px;padding:12px 17px;box-shadow:0 12px 35px #132b3150;font-size:12px;max-width:330px;transition:.25s}.toast.hide{opacity:0;transform:translateY(15px);pointer-events:none}.banner{border:1px solid #dbe9e6;background:#ecf8f1;color:#35725e;padding:12px 17px;border-radius:12px;font-size:12px;margin-bottom:18px;display:flex;justify-content:space-between;align-items:center;gap:13px}.banner p{margin:0;line-height:1.5}.footnote{color:#8ba0a3;font-size:11px;margin-top:12px;line-height:1.6}.hint-label{font-size:10px;color:#8da1a5;font-weight:850;letter-spacing:1.3px;text-transform:uppercase}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.small-box{padding:17px;background:#f7faf9;border:1px solid var(--border);border-radius:13px}.small-box h4{margin:0 0 8px}.small-box p{margin:0;color:#687e82;font-size:12px;line-height:1.6}.inline-help{color:#789196;font-size:11px;line-height:1.5}.hidden{display:none!important}[hidden]{display:none!important}.no-results{display:none;padding:15px;color:#819497;text-align:center;font-size:12px}#toast{pointer-events:none}.danger-zone{border:1px solid #f4d9d6;background:#fffafa;padding:17px;border-radius:13px}.danger-zone h4{color:#a64d47}.danger-zone p{font-size:12px;color:#8c7776}.print-only{display:none}
@media(max-width:1250px){.cols-4{grid-template-columns:repeat(2,1fr)}.student-grid{grid-template-columns:repeat(2,1fr)}.split{grid-template-columns:1fr}}
@media(max-width:820px){.sidebar{transform:translateX(-100%);transition:transform .2s}.sidebar.open{transform:translateX(0)}.content-shell{width:100%;margin-left:0}.mobile-menu{display:grid}.today-chip{display:none}.hero-art{display:none}.main{padding:20px 16px 65px}.topbar{padding:13px 16px}.topbar h2{font-size:18px}.page-head{align-items:start}.page-head h3{font-size:22px}.student-grid{grid-template-columns:repeat(2,1fr)}.mobile-shade{position:fixed;inset:0;background:#0008;z-index:40}.top-actions .btn{padding:9px}.top-actions .btn span{display:none}}
@media(max-width:570px){.cols-4,.cols-3,.cols-2,.split,.student-grid{grid-template-columns:1fr}.card-pad{padding:18px}.hero{min-height:210px;padding:25px}.hero h3{font-size:23px}.stat-card{min-height:110px}.form-grid,.info-grid,.detail-facts{grid-template-columns:1fr}.modal-content{padding:19px}.modal-head{padding:19px}.page-head{flex-direction:column}.button-row{width:100%}.button-row .btn{flex:1}.searchbar{width:100%;max-width:none}.date-box{width:36px;min-width:36px}.student-detail-top{padding:17px}.student-name h3{font-size:20px}.student-name .avatar{height:49px;width:49px}.tool-tab{padding:11px}.metro-number{font-size:65px}.card-head{padding:18px 17px 0}.card-body{padding:15px 17px 18px}}
@media print{.sidebar,.topbar,.page-head .button-row,.btn,.tabs,.banner,.icon-btn,.tool-menu{display:none!important}.content-shell{margin:0;width:100%}.main{padding:0}.card{border:1px solid #ddd;box-shadow:none;break-inside:avoid}.print-only{display:block}}

.icon-btn.mobile-menu{display:none}
@media(max-width:820px){.icon-btn.mobile-menu{display:grid}}

/* Cloud sync panel */
.cloud-status {display:flex;gap:12px;align-items:center;}
.cloud-status strong{display:block;font-weight:700;color:#153941;}
.cloud-status small{display:block;font-size:12px;color:#647980;margin-top:2px;}
.cloud-dot{width:12px;height:12px;border-radius:50%;background:#b5c2c6;flex:none;box-shadow:0 0 0 4px #eef3f4;}
.cloud-dot.online{background:#2e9876;box-shadow:0 0 0 4px #e1f5ec;}
.cloud-dot.saving,.cloud-dot.checking{background:#d1a23a;box-shadow:0 0 0 4px #fff1d8;}
.cloud-dot.offline,.cloud-dot.conflict,.cloud-dot.auth,.cloud-dot.setup,.cloud-dot.initial{background:#ca704f;box-shadow:0 0 0 4px #faebe5;}

/* Login private v3 — public assets may load, but the API stays authenticated. */
body.app-locked #app,body.app-locked #modal-root,body.app-locked #toast{display:none !important}
#auth-root:empty{display:none}
#auth-root:not(:empty){position:fixed;inset:0;z-index:9999;overflow:auto;display:flex;align-items:center;justify-content:center;background:linear-gradient(140deg,#eef4f3,#dceae8);padding:22px}
.auth-panel{background:white;border:1px solid #dae6e6;border-radius:20px;box-shadow:0 25px 80px #14323e22;padding:28px;max-width:410px;width:100%;color:#14333d}
.auth-panel .auth-logo{display:flex;align-items:center;justify-content:center;background:#14333d;color:white;width:50px;height:50px;border-radius:14px;font-size:30px;margin-bottom:15px}
.auth-panel h1{font-size:23px;margin:0 0 4px;font-weight:780}
.auth-panel h2{font-size:17px;margin:0 0 19px;font-weight:650}
.auth-panel p{line-height:1.55;color:#5e7278;font-size:14px}
.auth-panel label{display:block;font-size:14px;font-weight:650;margin:20px 0 7px}
.auth-panel .auth-note{border-top:1px solid #e7eded;padding-top:14px;margin:22px 0 0;font-size:12px}
.auth-panel .footnote{font-size:12px}