:root{--bg:#fafafa;--surface:#fff;--ink:#111827;--muted:#6b7280;--faint:#9ca3af;--line:#e5e7eb;--line-soft:#f0f1f3;--green-light:#e1ecb5;--green-mid:#9ec079;--green-deep:#6d8140;--accent:var(--green-deep);--radius:6px;--mono:ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}h1,h2,h3{letter-spacing:-.02em;margin:0;font-weight:600}a{color:var(--ink)}.login{background:var(--bg) url(/login-bg.jpg) center / cover no-repeat;place-items:center;min-height:100vh;padding:24px;display:grid}.login-card{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:var(--radius);text-align:center;background:#ffffffe0;border:1px solid #ffffffb3;width:100%;max-width:400px;padding:48px 44px;box-shadow:0 12px 40px -14px #464b374d}.login-card h1{margin-top:20px;font-size:26px}.login-sub{font-family:var(--mono);color:var(--accent);letter-spacing:.18em;text-transform:uppercase;margin:6px 0 32px;font-size:11px;font-weight:500}.login-card form{gap:10px;display:grid}.login-card input{border:1px solid var(--line);background:var(--surface);border-radius:4px;padding:11px 14px;font-size:15px}.login-card input:focus{border-color:var(--green-mid);box-shadow:0 0 0 3px var(--green-light);outline:none}.login-card button{background:var(--green-deep);color:#fff;cursor:pointer;border:0;border-radius:4px;padding:11px 14px;font-size:15px;font-weight:500}.login-card button:hover{background:#5c6d35}.login-error{color:#dc2626;margin:0;font-size:13.5px}.login-help{color:var(--muted);margin:28px 0 0;font-size:13px}.brand-mark{background:var(--green-deep);color:#fff;letter-spacing:-.02em;border-radius:10px;place-items:center;width:52px;height:52px;margin:0 auto;font-size:19px;font-weight:700;display:grid}.brand-mark.small{border-radius:7px;width:32px;height:32px;margin:0;font-size:13px}.topbar{z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);background:#ffffffd9;justify-content:space-between;align-items:center;gap:16px;padding:12px clamp(16px,4vw,40px);display:flex;position:sticky;top:0}.topbar-brand{color:var(--ink);letter-spacing:-.01em;align-items:center;gap:10px;font-size:15px;font-weight:600;text-decoration:none;display:flex}.topbar-brand em{color:var(--muted);font-size:14px;font-style:normal;font-weight:400}.topbar-right{align-items:center;gap:14px;display:flex}.school-name{color:var(--muted);font-size:13.5px}.signout{border:1px solid var(--line);background:var(--surface);cursor:pointer;color:var(--ink);border-radius:4px;padding:6px 12px;font-size:13px}.signout:hover{border-color:var(--faint)}main{max-width:1080px;margin:0 auto;padding:clamp(24px,4vw,48px) clamp(16px,4vw,40px) 80px}.footer{color:var(--faint);border-top:1px solid var(--line);text-align:center;padding:24px clamp(16px,4vw,40px);font-size:12.5px}.home-intro{max-width:560px;margin-bottom:40px}.home-intro h1{margin-bottom:10px;font-size:clamp(26px,4vw,34px)}.home-intro p{color:var(--muted);margin:0;font-size:15px}.grade-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;display:grid}.grade-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);gap:4px;padding:22px;text-decoration:none;transition:border-color .12s;display:grid}.grade-card:hover{border-color:var(--green-mid)}.grade-short{letter-spacing:-.03em;color:var(--green-deep);font-size:26px;font-weight:700}.grade-name{font-size:14.5px;font-weight:500}.page-head{flex-wrap:wrap;align-items:baseline;gap:20px;margin-bottom:28px;display:flex}.page-head h1{font-size:clamp(24px,4vw,30px)}.back{color:var(--muted);font-size:13.5px;text-decoration:none}.back:hover{color:var(--ink)}.weeks{gap:8px;display:grid}.week-row{grid-template-columns:78px 1fr;align-items:start;gap:12px;display:grid}.week-label{padding-top:12px}.week-num{font-family:var(--mono);color:var(--faint);text-transform:uppercase;letter-spacing:.08em;font-size:11px;font-weight:500}.week-cards{grid-template-columns:1fr 1fr;align-items:start;gap:8px;display:grid}@media (width<=760px){.week-row{grid-template-columns:1fr;gap:4px}.week-label{padding-top:0}.week-cards{grid-template-columns:1fr}}.lesson{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.lesson-blank{border:0}.lesson-empty{opacity:.5;background:0 0;border-style:dashed}.lesson-bar{text-align:left;width:100%;font:inherit;color:inherit;background:0 0;border:0;align-items:center;gap:10px;padding:10px 14px;display:flex}button.lesson-bar{cursor:pointer;-webkit-user-select:none;user-select:none;transition:background .1s}button.lesson-bar:hover{background:var(--bg)}.card-type{width:102px;font-family:var(--mono);text-transform:uppercase;letter-spacing:.12em;flex:none;font-size:9.5px;font-weight:600}.formation-type{color:var(--accent)}.foundation-type,.lesson-empty .card-type{color:var(--faint)}.lesson-title{white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:500;overflow:hidden}.lesson-empty .lesson-title{color:var(--muted);font-weight:400}.lesson-meta{font-family:var(--mono);color:var(--faint);flex:none;margin-left:auto;font-size:11px}.chevron{color:var(--faint);flex:none;font-size:10px;transition:transform .15s}.lesson.open .chevron{transform:rotate(180deg)}.lesson.open .lesson-bar{border-bottom:1px solid var(--line)}.doc-list{background:var(--bg);margin:0;padding:4px 0;list-style:none}.doc-row{justify-content:space-between;align-items:center;gap:12px;padding:7px 14px 7px 126px;display:flex}.doc-row+.doc-row{border-top:1px solid var(--line-soft)}@media (width<=760px){.doc-row{padding-left:32px}}.doc-name{color:var(--ink);font-size:13.5px}.doc-actions{flex:none;gap:6px;display:flex}.doc-btn{border:1px solid var(--line);color:var(--ink);background:var(--surface);cursor:default;border-radius:4px;padding:3px 12px;font-size:12.5px;font-weight:500;text-decoration:none;display:inline-block}a.doc-btn{cursor:pointer}a.doc-btn-secondary:hover{border-color:var(--ink)}.doc-btn-primary{background:var(--ink);border-color:var(--ink);color:#fff}a.doc-btn-primary:hover{background:#000}