:root{--navy:#10243e;--teal:#0e7490;--cyan:#67e8f9;--bg:#f3f7fb;--muted:#6b7d91;--line:#dbe5ef;--danger:#b42318;--success:#067647}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--navy);font-family:Arial,Helvetica,sans-serif}button,input,select{font:inherit}.hidden{display:none!important}.eyebrow{margin:0 0 .35rem;color:var(--teal);font-size:.76rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.muted{color:var(--muted)}.center-screen{min-height:100vh;display:grid;place-content:center;gap:1rem;text-align:center;color:#52657c}.loader{width:2.25rem;height:2.25rem;margin:auto;border:3px solid #d7e1ec;border-top-color:var(--teal);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.card{padding:1.5rem;border:1px solid var(--line);border-radius:1.2rem;background:#fff;box-shadow:0 14px 40px rgba(32,56,85,.08)}.card h2{margin:.15rem 0 .4rem}.stack{display:flex;flex-direction:column;gap:1rem}label{display:flex;flex-direction:column;gap:.45rem;color:#34475d;font-size:.9rem;font-weight:700}input,select{width:100%;min-height:3rem;padding:.7rem .8rem;border:1px solid #c7d4e1;border-radius:.6rem;background:#fff;color:var(--navy);outline:none}input:focus,select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(14,116,144,.14)}button,.button,.primary-link{min-height:2.7rem;padding:.7rem 1rem;border:0;border-radius:.55rem;background:var(--teal);color:#fff;font-weight:700;text-align:center;text-decoration:none;cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}.button.secondary{background:#e7f6fa;color:var(--teal)}.button.outline{border:1px solid #c7d4e1;background:#fff;color:var(--navy)}.button.danger{background:#d92d20}.error-text{margin:0;color:var(--danger)}.error-box{padding:.85rem;border:1px solid #fecdca;border-radius:.65rem;background:#fef3f2;color:var(--danger)}.success-box{padding:1rem;border:1px solid #a6f4c5;border-radius:.75rem;background:#ecfdf3;color:var(--success)}
.login-shell{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:clamp(2rem,7vw,8rem);padding:clamp(2rem,7vw,7rem);background:radial-gradient(circle at 12% 15%,rgba(34,211,238,.18),transparent 30%),linear-gradient(135deg,#0b1930 0%,#102d4e 52%,#eef6fb 52%,#f7fafc 100%)}.login-brand{max-width:590px;color:#fff}.login-brand .eyebrow,.topbar .eyebrow{color:var(--cyan)}.login-brand h1{margin:.8rem 0 1rem;font-size:clamp(2.4rem,5vw,4.7rem);line-height:.98;letter-spacing:-.05em}.login-brand>p:last-child{color:#c9d8e8}.brand-mark{width:3.7rem;height:3.7rem;display:grid;place-items:center;margin-bottom:1.2rem;border:1px solid rgba(255,255,255,.35);border-radius:1.15rem;background:rgba(255,255,255,.12);font-size:1.8rem}.login-card{width:min(100%,440px);justify-self:center;border:0}.login-card h2{font-size:1.45rem}
.dashboard-shell{min-height:100vh;padding:0 clamp(1rem,4vw,4rem) 4rem;background:linear-gradient(180deg,var(--navy) 0 208px,var(--bg) 208px)}.topbar{max-width:1440px;height:184px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:1rem;color:#fff}.topbar h1{margin:0 0 .35rem;font-size:clamp(2rem,4vw,3.4rem);letter-spacing:-.04em}.topbar p:last-child{margin:0;color:#c9d8e8}.topbar .outline{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.08);color:#fff}.notice{max-width:1440px;margin:0 auto 1rem;padding:.85rem 1rem;border:1px solid #bae6fd;border-radius:.8rem;background:#ecfeff;color:#155e75;font-weight:600}.dashboard-grid{max-width:1440px;margin:auto;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(320px,.75fr);gap:1.25rem;align-items:start}.main-column,.side-column{min-width:0}.side-column{display:flex;flex-direction:column;gap:1.25rem}.form-grid{display:grid;grid-template-columns:1fr 220px;gap:1rem;margin-top:1.2rem}.location-box{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem;border:1px dashed #a9bdd0;border-radius:.9rem;background:#f7fafc}.location-box>div,.student-location>div{display:flex;align-items:center;gap:.8rem}.location-box p,.student-location p{margin:.2rem 0 0;color:var(--muted);font-size:.82rem}.icon{color:var(--teal);font-size:1.7rem}.form-grid>button{grid-column:1/-1}.live-badge{display:inline-block;padding:.4rem .65rem;border-radius:99px;background:#ecfdf3;color:var(--success);font-size:.72rem;font-weight:800;letter-spacing:.05em}.live-layout{display:grid;grid-template-columns:minmax(280px,1fr) 230px;gap:1.5rem;margin-top:1rem}.qr-panel{text-align:center}.qr-panel canvas{width:min(100%,360px)!important;height:auto!important;border:1px solid var(--line);border-radius:1rem;box-shadow:0 10px 28px rgba(16,36,62,.08)}.qr-panel p{margin:.8rem 0 .2rem;font-weight:700}.qr-panel small{color:var(--muted)}.live-stats{display:flex;flex-direction:column;gap:.75rem}.count-card{padding:1.3rem;border-radius:1rem;background:var(--navy);color:#fff;text-align:center}.count-card span{display:block;font-size:3.4rem;font-weight:800;line-height:1}.count-card p{margin:.35rem 0 0;color:#c9d8e8}.download-link{min-height:2.7rem;display:grid;place-items:center;border-radius:.55rem;background:#ecfdf3;color:var(--success);font-weight:700;text-decoration:none}.attendance-list{margin:1.2rem -1.5rem -1.5rem;border-top:1px solid var(--line)}.list-head{display:flex;justify-content:space-between;padding:1rem 1.5rem}.list-head span{color:var(--muted);font-size:.8rem}.student-row{display:grid;grid-template-columns:24px 1fr auto auto;align-items:center;gap:.75rem;padding:.8rem 1.5rem;border-top:1px solid #eef2f6}.student-row div{display:flex;flex-direction:column}.student-row div span,.student-row time{color:var(--muted);font-size:.82rem}.student-row b{color:var(--teal)}.check{color:#12b76a;font-weight:800}.empty{padding:1rem;color:var(--muted);text-align:center}.history-list{display:flex;flex-direction:column}.history-item{display:flex;align-items:center;justify-content:space-between;gap:.7rem;padding:.85rem 0;border-bottom:1px solid #eef2f6}.history-item div{min-width:0;display:flex;flex-direction:column;gap:.2rem}.history-item strong{font-size:.85rem}.history-item span{color:var(--muted);font-size:.76rem}.history-item a{padding:.5rem;border-radius:.5rem;background:#e7f6fa;color:var(--teal);font-size:.78rem;font-weight:700;text-decoration:none}.course-setting-row{padding:.85rem 0;border-bottom:1px solid #eef2f6}.course-setting-row>div:last-child{display:grid;grid-template-columns:1fr auto;gap:.5rem;margin-top:.5rem}.course-setting-row input{min-height:2.5rem}.course-setting-row button{min-height:2.5rem}
.student-shell{min-height:100vh;display:grid;place-content:center;gap:1.2rem;padding:2rem 1rem;background:radial-gradient(circle at 50% 0,#dff8ff,transparent 38%),var(--bg)}.student-header{text-align:center}.student-header .brand-mark{margin:0 auto 1rem;border-color:#b9d7df;background:#e7f6fa;color:var(--teal)}.student-header h1{margin:.35rem 0;font-size:clamp(1.7rem,5vw,2.35rem)}.student-header>p:last-child{margin:0;color:var(--muted)}.student-card{width:min(calc(100vw - 2rem),580px)}.course-chip{display:inline-block;padding:.3rem .55rem;border-radius:99px;background:#e7f6fa;color:var(--teal);font-size:.72rem;font-weight:800}.student-location{display:flex;align-items:center;justify-content:space-between;gap:.8rem;padding:.9rem;border:1px dashed #a9bdd0;border-radius:.85rem;background:#f7fafc}.student-location.ready{border-style:solid;border-color:#a6f4c5;background:#ecfdf3}.privacy-note{color:var(--muted);font-size:.76rem;line-height:1.45;text-align:center}.center-card{text-align:center}.success-icon,.error-icon{width:4rem;height:4rem;display:grid;place-items:center;margin:auto;border-radius:50%;font-size:2rem;font-weight:800}.success-icon{background:#ecfdf3;color:#12b76a}.error-icon{background:#fef3f2;color:#f04438}
.setup-body{background:linear-gradient(135deg,#0b1930,#17466a)}.setup-wrap{min-height:100vh;display:grid;place-items:center;padding:2rem 1rem}.setup-card{width:min(100%,680px);padding:2rem;border-radius:1.2rem;background:#fff;box-shadow:0 25px 70px rgba(0,0,0,.25)}.setup-form{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.setup-form button{grid-column:1/-1}.primary-link{display:inline-block;margin-top:.7rem}
@media(max-width:900px){.login-shell{grid-template-columns:1fr;background:linear-gradient(180deg,#0b1930 0 43%,var(--bg) 43%)}.login-brand{text-align:center}.login-brand .brand-mark{margin-inline:auto}.dashboard-grid{grid-template-columns:1fr}.topbar{height:166px}}@media(max-width:620px){.dashboard-shell{padding-inline:.75rem;background:linear-gradient(180deg,var(--navy) 0 180px,var(--bg) 180px)}.topbar{height:160px}.topbar h1{font-size:1.8rem}.form-grid,.live-layout,.setup-form{grid-template-columns:1fr}.location-box,.student-location{align-items:stretch;flex-direction:column}.location-box button,.student-location button{width:100%}.student-row{grid-template-columns:22px 1fr auto}.student-row time{display:none}.setup-form button{grid-column:1}.login-brand h1{font-size:2.7rem}}