:root{--bg:#f5f7ff;--panel:#fff;--ink:#050505;--muted:#5d6475;--line:#d8def2;--brand:#0718ff;--brand-dark:#020a91;--brand-soft:#e7ebff;--green:#137a63;--green-soft:#e3f7f0;--gold:#c9881a;--gold-soft:#fff0cf;--red:#b54747;--red-soft:#fae5e5;--blue:var(--brand);--blue-soft:var(--brand-soft);--shadow:0 16px 48px rgba(7,24,255,.08)}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}html{scroll-behavior:smooth}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh}.topbar{background:hsla(0,0%,100%,.9);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);gap:18px;justify-content:space-between;padding:18px clamp(16px,4vw,44px);position:-webkit-sticky;position:sticky;top:0;z-index:5}.brand,.topbar{align-items:center;display:flex}.brand{gap:12px;min-width:0}.brand-mark{align-items:center;background:linear-gradient(135deg,var(--brand),#050505);border:2px solid var(--brand);border-radius:8px;color:#fff;display:grid;flex:0 0 auto;font-weight:900;height:50px;place-items:center;text-shadow:0 1px 2px rgba(0,0,0,.7);width:50px}.brand h1{font-size:18px;line-height:1.1;margin:0}.brand p{color:var(--muted);font-size:13px;margin:3px 0 0}.top-actions{align-items:center;display:flex;gap:10px}.ghost-button,.icon-button,.primary-button,.secondary-button{align-items:center;border:0;border-radius:8px;display:inline-flex;font-weight:700;gap:8px;min-height:40px;padding:0 14px}.primary-button{background:var(--brand);color:#fff}.secondary-button{background:var(--ink);color:#fff}.ghost-button,.icon-button{background:var(--panel);border:1px solid var(--line);color:var(--ink)}.icon-button{justify-content:center;padding:0;width:40px}.layout{display:grid;grid-gap:24px;gap:24px;grid-template-columns:240px minmax(0,1fr);padding:24px clamp(16px,4vw,44px) 44px}.sidebar{align-self:start;display:grid;grid-gap:14px;gap:14px;position:-webkit-sticky;position:sticky;top:98px}.mini-panel,.nav-list{background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:10px}.nav-item{align-items:center;border-radius:8px;color:var(--muted);display:flex;gap:10px;padding:11px 12px}.nav-item.active{background:var(--brand-soft);box-shadow:inset 4px 0 0 var(--brand);color:var(--brand);font-weight:800}.mini-panel{padding:16px}.mini-panel p{color:var(--muted);font-size:13px;line-height:1.45;margin:6px 0 0}.content{grid-gap:20px;gap:20px;min-width:0}.content,.hero-band{display:grid;scroll-margin-top:118px}.hero-band{background:#050505;border-radius:8px;color:#fff;grid-gap:22px;gap:22px;grid-template-columns:minmax(0,1fr) auto;overflow:hidden;padding:26px;position:relative}.hero-band:after{background:radial-gradient(circle at 82% 22%,rgba(7,24,255,.82),rgba(7,24,255,0) 34%),linear-gradient(135deg,rgba(7,24,255,.64),hsla(0,0%,100%,.05) 52%,rgba(5,5,5,0));content:"";inset:0;position:absolute}.hero-band>*{position:relative;z-index:1}.hero-band h2{font-size:clamp(26px,4vw,42px);letter-spacing:0;line-height:1.02;margin:0;max-width:780px}.hero-band p{color:hsla(0,0%,100%,.78);line-height:1.55;margin:10px 0 0;max-width:620px}.hero-stack{align-content:center;display:grid;grid-gap:10px;gap:10px;min-width:170px}.hero-chip{align-items:center;background:hsla(0,0%,100%,.13);border:1px solid hsla(0,0%,100%,.22);border-radius:8px;display:flex;gap:8px;justify-content:space-between;padding:12px}.stats-grid{display:grid;grid-gap:14px;gap:14px;grid-template-columns:repeat(4,minmax(0,1fr))}.stat{background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:18px}.stat-label{align-items:center;color:var(--muted);display:flex;font-size:13px;gap:8px}.stat strong{display:block;font-size:30px;letter-spacing:0;margin-top:10px}.section{background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);overflow:hidden;scroll-margin-top:118px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}.section-highlight{border-color:var(--brand);box-shadow:0 0 0 4px rgba(7,24,255,.16),0 18px 54px rgba(7,24,255,.14)}.hero-band.section-highlight{box-shadow:0 0 0 4px rgba(7,24,255,.22),0 20px 58px rgba(7,24,255,.2)}.section-highlight .section-head{background:linear-gradient(90deg,var(--brand-soft),#fff)}.section-highlight .section-head h3{color:var(--brand)}.section-head{align-items:center;border-bottom:1px solid var(--line);display:flex;gap:12px;justify-content:space-between;padding:16px 18px}.section-head h3{font-size:17px;margin:0}.section-head p{color:var(--muted);font-size:13px;margin:4px 0 0}.filters{display:flex;flex-wrap:wrap;gap:8px;padding:14px 18px 0}.filter-pill{background:#fff;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:13px;font-weight:800;min-height:34px;padding:0 13px}.filter-pill.active{background:var(--brand);border-color:var(--brand);color:#fff}.table-wrap{overflow-x:auto;padding:14px 18px 18px}table{border-collapse:collapse;min-width:920px;width:100%}td,th{border-bottom:1px solid var(--line);padding:13px 10px;text-align:left;vertical-align:middle}th{color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase}td{font-size:14px}.student-name{align-items:center;display:flex;gap:10px;min-width:210px}.avatar{align-items:center;background:var(--blue-soft);border-radius:8px;color:var(--blue);display:grid;flex:0 0 auto;font-weight:900;height:38px;place-items:center;width:38px}.muted{color:var(--muted);font-size:13px}.status{border-radius:999px;display:inline-flex;font-size:12px;font-weight:900;padding:6px 10px;text-transform:capitalize}.status.paid{background:var(--brand-soft);color:var(--brand-dark)}.status.due{background:var(--gold-soft);color:var(--gold)}.status.overdue{background:var(--red-soft);color:var(--red)}.status.inactive{background:#ecefed;color:var(--muted)}.actions-cell{display:flex;gap:8px}.grid-two{display:grid;grid-gap:20px;gap:20px;grid-template-columns:minmax(0,1fr) minmax(330px,.75fr)}.form-grid{display:grid;grid-gap:14px;gap:14px;grid-template-columns:repeat(2,minmax(0,1fr));padding:18px}.field{display:grid;grid-gap:7px;gap:7px}.field.full{grid-column:1/-1}label{color:var(--muted);font-size:13px;font-weight:800}input,select,textarea{background:#fbfcfa;border:1px solid var(--line);border-radius:8px;color:var(--ink);min-height:42px;padding:10px 12px;width:100%}textarea{min-height:80px;resize:vertical}.form-actions{display:flex;gap:10px;grid-column:1/-1}.attendance-list{padding:18px}.attendance-list,.attendance-row{display:grid;grid-gap:10px;gap:10px}.attendance-row{align-items:center;border:1px solid var(--line);border-radius:8px;grid-template-columns:1fr auto;padding:12px}.check-group{display:flex;gap:8px}.check-button{align-items:center;background:#fbfcfa;border:1px solid var(--line);border-radius:8px;display:inline-flex;height:34px;justify-content:center;width:38px}.check-button.present{background:var(--brand-soft);color:var(--brand)}.report-grid{display:grid;grid-gap:12px;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr));padding:18px}.report-card{border:1px solid var(--line);border-radius:8px;padding:14px}.report-card span{color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase}.report-card strong{display:block;font-size:24px;margin-top:8px;overflow-wrap:anywhere}.info-grid{display:grid;grid-gap:18px;gap:18px;grid-template-columns:repeat(2,minmax(0,1fr));padding:18px}.info-grid h4{font-size:14px;margin:0 0 10px;text-transform:uppercase}.info-list{display:grid;grid-gap:10px;gap:10px}.info-row{border:1px solid var(--line);border-radius:8px;display:grid;grid-gap:4px;gap:4px;padding:12px}.info-row span{color:var(--muted);font-size:13px;line-height:1.4}.recent-payments{border-top:1px solid 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1;justify-content:center}.layout{padding-inline:12px}.hero-band{padding:20px}.form-grid,.info-grid,.nav-list,.report-grid,.stats-grid{grid-template-columns:1fr}.nav-item{justify-content:center}.nav-item span{display:none}}