:root{--bg: #f5f9ff;--surface: #ffffff;--surface-soft: #eef5ff;--primary: #2f6fd9;--primary-strong: #1e56b6;--primary-soft: #dbe9ff;--text: #1b2a41;--muted: #5d6f8c;--border: #d7e3f8;--success: #2f9e72;--warning: #e4a434;--danger: #d64f4f;--shadow: 0 12px 30px rgba(35, 74, 146, .12);--radius: 14px}.dashboard-page{margin:0;min-height:100vh;font-family:Segoe UI,Noto Sans,sans-serif;color:var(--text);background:radial-gradient(circle at 15% 10%,#e6f0ff 0%,transparent 35%),radial-gradient(circle at 90% 0%,#dce8fb 0%,transparent 30%),var(--bg)}.app{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background:linear-gradient(180deg,#1f4f9d,#1c4a91);color:#eef4ff;padding:22px 16px;position:sticky;top:0;height:100vh;border-right:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;padding:10px 12px 20px;border-bottom:1px solid rgba(255,255,255,.18);margin-bottom:16px}.brand-logo{width:36px;height:36px;border-radius:10px;overflow:hidden;border:1px solid rgba(255,255,255,.4);background:#fff;flex:0 0 auto}.brand h1{font-size:18px;margin:0;letter-spacing:.2px}.brand p{margin:2px 0 0;font-size:12px;color:#d5e4ff}.nav{display:grid;gap:8px}.nav button{border:0;border-radius:12px;padding:12px 14px;text-align:left;font-size:14px;font-weight:600;color:#dbe9ff;background:transparent;cursor:pointer;transition:background .25s ease,transform .2s ease,color .25s ease}.nav button:hover{background:#ffffff14;transform:translate(3px)}.nav button.active{background:#fff3;color:#fff;box-shadow:inset 0 0 0 1px #ffffff2e}.sidebar-footer{margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.18);display:grid;gap:10px}.auth-status{font-size:12px;line-height:1.5;color:#d5e4ff;background:#ffffff14;border-radius:12px;padding:10px 12px}.auth-status strong{display:block;color:#fff;margin-bottom:2px;font-size:13px}.sidebar .auth-button{width:100%;border:1px solid rgba(255,255,255,.26);border-radius:12px;padding:12px 14px;background:#ffffff1a;color:#fff;font-weight:700;cursor:pointer;transition:background .25s ease,transform .2s ease}.sidebar .auth-button:hover{background:#ffffff29;transform:translate(3px)}.content{padding:24px;overflow-x:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:12px;flex-wrap:wrap}.topbar h2{margin:0;font-size:28px;letter-spacing:.2px}.topbar .date-chip{background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:9px 14px;color:var(--muted);font-weight:600;box-shadow:var(--shadow)}.view.active{display:block;opacity:1;transform:translateY(0);animation:fadeSlide .35s ease}.panel-spaced{margin-top:12px}@keyframes fadeSlide{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.cards{display:grid;grid-template-columns:repeat(4,minmax(170px,1fr));gap:14px;margin-bottom:16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;position:relative;overflow:hidden}.card:after{content:"";position:absolute;inset:auto -30% -36px auto;width:130px;height:130px;border-radius:999px;background:#2f6fd917}.card .label{color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.3px;text-transform:uppercase;margin-bottom:6px}.card .value{font-size:30px;font-weight:700;line-height:1;margin-bottom:6px;position:relative;z-index:1}.card .hint{color:var(--muted);font-size:13px;position:relative;z-index:1}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.panel h3{margin:0 0 12px;font-size:17px}.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:14px}select,input[type=date]{border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);padding:8px 10px;min-width:160px;font-size:14px;outline:none}select:focus,input[type=date]:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2f6fd91f}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:12px}table{width:100%;border-collapse:collapse;min-width:620px}th,td{text-align:left;padding:11px 12px;border-bottom:1px solid #e6eefc;font-size:14px}th{background:#f0f6ff;color:#314a73;font-size:12px;letter-spacing:.3px;text-transform:uppercase;position:sticky;top:0;z-index:1}tbody tr:hover{background:#f8fbff}.status-chip{display:inline-flex;align-items:center;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:700;letter-spacing:.2px}.status-present{color:#116947;background:#daf3e8}.status-absent{color:#8f2f2f;background:#fde3e3}.status-late{color:#8a5f16;background:#fff0d2}.status-toggle{display:inline-flex;border:1px solid var(--border);border-radius:999px;background:#f8fbff;overflow:hidden}.status-toggle button{border:0;background:transparent;padding:6px 10px;font-size:12px;font-weight:700;color:#446085;cursor:pointer;transition:background .25s ease,color .25s ease}.status-toggle button.active-present{background:#daf3e8;color:#0c6945}.status-toggle button.active-absent{background:#fde3e3;color:#8f2f2f}.status-toggle button.active-late{background:#fff0d2;color:#8a5f16}.note-input{width:100%;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);padding:7px 10px;font-size:13px;outline:none;min-width:190px}.note-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2f6fd91f}.actions{display:flex;justify-content:flex-end;margin-top:12px}.btn-primary{border:0;border-radius:10px;padding:10px 14px;background:linear-gradient(145deg,var(--primary),var(--primary-strong));color:#fff;font-weight:700;letter-spacing:.2px;cursor:pointer;transition:transform .2s ease,box-shadow .25s ease;box-shadow:0 8px 20px #2f6fd940}.btn-primary:hover{transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.students-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.students-controls{display:grid;grid-template-columns:repeat(2,minmax(240px,1fr));gap:12px;margin-bottom:14px}.admin-card{border:1px solid var(--border);border-radius:12px;background:#f8fbff;padding:12px}.admin-card h4{margin:0 0 6px;font-size:15px;color:#274779}.admin-card p{margin:0 0 10px;font-size:13px;color:var(--muted)}.stack-form{display:grid;gap:8px}.stack-form input,.stack-form select{width:100%}.stack-form button{justify-self:end}.class-roster{border:1px solid var(--border);border-radius:12px;padding:12px;background:#f8fbff}.class-roster h4{margin:0 0 8px;font-size:15px;color:#274779}.class-teacher{margin:0 0 8px;font-size:13px;color:#49668f;font-weight:600}.class-roster ul{margin:0 0 10px;padding-left:18px;color:#334f7b;line-height:1.55;font-size:14px}.inline-student-form{display:grid;gap:8px;border-top:1px solid var(--border);padding-top:10px}.inline-student-form input{width:100%;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);padding:8px 10px;font-size:14px;outline:none}.inline-student-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2f6fd91f}.inline-student-form button{justify-self:end}.teacher-list{margin-top:12px;border:1px solid var(--border);border-radius:12px;background:#f8fbff;padding:10px;display:grid;gap:8px}.teacher-item{font-size:13px;color:#3a5782;padding:6px 8px;border-radius:8px;background:#fff;border:1px solid #e3ecfb}.class-list{margin-top:12px;border:1px solid var(--border);border-radius:12px;background:#f8fbff;padding:10px;display:grid;gap:8px}.class-item{font-size:13px;color:#3a5782;padding:8px 10px;border-radius:8px;background:#fff;border:1px solid #e3ecfb;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.profile-grid{display:grid;grid-template-columns:repeat(2,minmax(240px,1fr));gap:12px}.profile-summary{border:1px solid var(--border);border-radius:12px;background:#f8fbff;padding:12px;display:grid;gap:6px;font-size:14px;color:#35557f}.profile-summary strong{color:#264a78}.teacher-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.teacher-name{font-weight:700;color:#2c4f7f}.teacher-reassign-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.teacher-reassign-form select{min-width:160px}.teacher-reassign-form button{border:0;border-radius:10px;padding:8px 10px;background:#e6efff;color:#1d4b9a;font-weight:700;cursor:pointer}.breakdown-table{min-width:0}.toast{position:fixed;right:18px;bottom:18px;background:#173b74;color:#fff;padding:10px 14px;border-radius:10px;font-weight:600;box-shadow:var(--shadow);opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .25s ease,transform .25s ease}.toast.show{opacity:1;transform:translateY(0)}@media (max-width: 1080px){.cards{grid-template-columns:repeat(2,minmax(170px,1fr))}}@media (max-width: 840px){.app{grid-template-columns:1fr}.sidebar{position:static;height:auto;border-right:0;border-bottom:1px solid rgba(255,255,255,.2)}.nav{grid-template-columns:repeat(2,minmax(0,1fr))}.content{padding:16px}}@media (max-width: 600px){.cards{grid-template-columns:1fr}.topbar h2{font-size:22px}.nav{grid-template-columns:1fr}.toolbar{display:grid;grid-template-columns:1fr}.students-controls,.profile-grid{grid-template-columns:1fr}select,input[type=date]{width:100%}}:root{--bg: #f5f9ff;--surface: #ffffff;--border: #d7e3f8;--text: #1b2a41;--muted: #5d6f8c;--primary: #2f6fd9;--primary-strong: #1e56b6;--shadow: 0 12px 30px rgba(35, 74, 146, .12)}*{box-sizing:border-box}.login-page{margin:0;min-height:100vh;display:grid;place-items:center;padding:20px;font-family:Segoe UI,Noto Sans,sans-serif;color:var(--text);background:radial-gradient(circle at 15% 10%,#e6f0ff 0%,transparent 35%),radial-gradient(circle at 90% 0%,#dce8fb 0%,transparent 30%),var(--bg)}.login-card{width:min(100%,460px);background:var(--surface);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);padding:28px}.brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}.brand-logo{width:36px;height:36px;border-radius:10px;overflow:hidden;border:1px solid var(--border);background:#fff;flex:0 0 auto}.brand-logo img{width:100%;height:100%;display:block;object-fit:cover}.brand h1{margin:0;font-size:20px}.brand p{margin:2px 0 0;color:var(--muted);font-size:13px}h2{margin:0 0 8px;font-size:24px}.subtitle{margin:0 0 20px;color:var(--muted);line-height:1.45}.login-form{display:grid;gap:14px}.field label{display:block;margin-bottom:6px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.3px;color:#48658c}.field input{width:100%;border:1px solid var(--border);border-radius:10px;padding:11px 12px;font-size:14px;color:var(--text);outline:none}.field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2f6fd91f}.field input:disabled{opacity:.7;cursor:not-allowed}.btn-primary{border:0;border-radius:10px;padding:10px 14px;background:linear-gradient(145deg,var(--primary),var(--primary-strong));color:#fff;font-weight:700;cursor:pointer;width:100%}.btn-primary:hover:not(:disabled){filter:brightness(1.03)}.btn-primary:disabled{opacity:.7;cursor:not-allowed}.btn-google{width:100%;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--border);border-radius:10px;padding:10px 14px;background:#fff;color:var(--text);font-weight:700;font-size:14px;cursor:pointer}.btn-google:hover:not(:disabled){background:#f8fbff}.btn-google:disabled{opacity:.7;cursor:not-allowed}.login-divider{display:flex;align-items:center;gap:12px;margin:18px 0;color:var(--muted);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.login-divider:before,.login-divider:after{content:"";flex:1;height:1px;background:var(--border)}.error{min-height:20px;color:#b93a3a;font-size:13px;margin:2px 0 0}.login-hint{margin-top:14px;font-size:13px;color:var(--muted);background:#eef5ff;border:1px solid var(--border);border-radius:12px;padding:10px 12px}.sub-link{margin-top:10px;text-align:center;font-size:13px}.sub-link a{color:#1f5dc2;font-weight:700;text-decoration:none}.sub-link a:hover{text-decoration:underline}body{margin:0}.auth-loading{min-height:100vh;display:grid;place-items:center;font-family:Segoe UI,Noto Sans,sans-serif;color:#5d6f8c;background:#f5f9ff}