:root{
  --bg:#f4f6f2;--card:#fff;--ink:#17211d;--muted:#68736d;--brand:#173f35;--brand2:#235c4d;
  --ok:#2f7d5b;--warn:#b87318;--bad:#b23d3d;--line:#dfe5df;--soft:#edf3ef;--blue:#315f88;
  --shadow:0 4px 18px rgba(23,63,53,.08)
}
*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}
.overlay{position:fixed;inset:0;z-index:100;background:linear-gradient(145deg,#173f35,#235c4d);display:flex;align-items:center;justify-content:center;padding:22px}.login-card{width:min(440px,100%);background:#fff;border-radius:24px;padding:26px;box-shadow:0 24px 80px #0004;position:relative}.login-card.compact{max-width:390px}.brandmark{width:58px;height:58px;border-radius:18px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:22px;margin-bottom:16px}.login-card h1,.login-card h2{margin:.15rem 0 .55rem}.eyebrow{font-size:11px;letter-spacing:.12em;font-weight:800;color:var(--brand2);margin:0 0 4px}.muted{color:var(--muted);font-size:13px}.profile-list{display:grid;gap:10px;margin:20px 0 14px}.profile-card{border:1px solid var(--line);background:#fff;padding:14px 16px;border-radius:15px;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:10px}.profile-card:hover{border-color:#9fb7aa}.profile-card b{display:block}.role-tag{font-size:11px;padding:4px 8px;border-radius:999px;background:var(--soft);color:var(--brand)}.teacher-link{display:block;margin:14px auto 0;border:0;background:transparent;color:#7a857f;text-decoration:underline;font-size:12px}.status-text,.error-text{min-height:18px;font-size:12px;margin-top:10px}.error-text{color:var(--bad)}.pin-input{width:100%;padding:14px;border:1px solid #bcc9c1;border-radius:13px;font-size:20px;letter-spacing:.16em;text-align:center;margin:12px 0}.close-x{border:0;background:transparent;font-size:24px;line-height:1;color:var(--muted);padding:4px 8px}.login-card>.close-x{position:absolute;right:12px;top:10px}
.app-shell{max-width:920px;margin:auto;padding:18px 16px 96px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:14px}.topbar h1{margin:0;font-size:24px}.top-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.cloud-pill,.pill{font-size:11px;border-radius:999px;padding:5px 8px;background:#e9eeea;color:var(--muted);white-space:nowrap}.cloud-pill.online{background:#e2f1e9;color:var(--ok)}.cloud-pill.offline{background:#f5eadb;color:var(--warn)}.profile-chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 10px;font-size:12px;box-shadow:0 1px 5px #0000000a}.content{min-height:60vh}.view{display:none}.view.active{display:block}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;margin:12px 0;box-shadow:var(--shadow)}.hero{background:var(--brand);color:#fff;border-color:var(--brand)}.hero .muted{color:#d6e6df}.section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:18px 0 8px}.section-head h2,.card h2,.card h3{margin:0}.section-head h2{font-size:18px}.card h2{font-size:18px}.card h3{font-size:16px}.progress{height:9px;border-radius:999px;background:#e6ebe7;overflow:hidden}.progress>i{display:block;height:100%;background:var(--ok);border-radius:inherit}.hero .progress{background:#ffffff35}.hero .progress>i{background:#fff}.big-number{font-size:30px;font-weight:800}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mini-card{padding:13px;border:1px solid var(--line);border-radius:14px;background:#fafbf9}.mini-card b{display:block;font-size:18px;margin-top:3px}.task-list{display:grid;gap:8px}.task{border:1px solid var(--line);border-radius:14px;padding:12px;background:#fff;display:grid;grid-template-columns:auto 1fr auto;gap:11px;align-items:start}.task input[type=checkbox]{width:22px;height:22px;margin-top:1px;accent-color:var(--ok)}.task-title{font-weight:700}.task.done .task-title{text-decoration:line-through;color:#7b8580}.task-meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:7px}.badge{font-size:11px;padding:4px 7px;border-radius:999px;background:var(--soft);color:var(--brand)}.badge.warn{background:#f5eadb;color:var(--warn)}.badge.bad{background:#f7e4e4;color:var(--bad)}.badge.blue{background:#e6eef5;color:var(--blue)}.phase-card{border-left:5px solid #c8d5ce}.phase-card.current{border-left-color:var(--ok)}.phase-card.complete{border-left-color:#74a98e}.phase-top{display:flex;justify-content:space-between;align-items:start;gap:12px}.phase-number{font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--muted)}.phase-title{font-size:17px;font-weight:800;margin:2px 0 4px}.btn{border:0;border-radius:12px;padding:10px 12px;font-weight:700}.btn.primary{background:var(--brand);color:#fff}.btn.secondary{background:#e7eee9;color:var(--brand)}.btn.danger{background:#f6e2e2;color:var(--bad)}.btn.small{padding:7px 9px;font-size:12px}.btn.full{width:100%}.btn:disabled{opacity:.45;cursor:not-allowed}.button-row{display:flex;gap:8px;flex-wrap:wrap}.file-buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.file-button{border:1px solid var(--line);border-radius:14px;background:#fff;padding:13px;text-align:left;font-weight:700}.file-button small{display:block;color:var(--muted);font-weight:500;margin-top:3px}.material-row,.user-row,.activity-row{padding:11px 0;border-bottom:1px solid var(--line)}.material-row:last-child,.user-row:last-child,.activity-row:last-child{border-bottom:0}.row{display:flex;justify-content:space-between;align-items:center;gap:12px}.stack{display:grid;gap:6px}.subtle{font-size:12px;color:var(--muted)}.empty{padding:20px;text-align:center;color:var(--muted);border:1px dashed #cbd4ce;border-radius:14px}.segmented{display:flex;gap:6px;background:#e9eee9;padding:5px;border-radius:13px;overflow:auto}.segmented button{border:0;background:transparent;padding:8px 10px;border-radius:9px;font-size:12px;font-weight:700;white-space:nowrap}.segmented button.active{background:#fff;color:var(--brand);box-shadow:0 1px 5px #00000012}.form-grid{display:grid;gap:10px}.form-grid label{font-size:12px;font-weight:700;color:#45504b}.form-grid input,.form-grid select,.form-grid textarea{width:100%;margin-top:5px;padding:11px;border:1px solid #cbd4ce;border-radius:11px;background:#fff}.form-grid textarea{min-height:90px;resize:vertical}.switch-line{display:flex;align-items:center;justify-content:space-between;gap:10px}.admin-alert{border:1px solid #e5c78f;background:#fff8ec;color:#684b1c;padding:12px 13px;border-radius:13px;font-size:13px}.online-dot,.offline-dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:6px}.online-dot{background:var(--ok)}.offline-dot{background:#aeb6b1}.activity-desc{font-weight:650}.change-box{margin-top:8px;padding:9px;border-radius:10px;background:#f7f8f6;font-size:12px;display:grid;gap:5px}.change-old{color:var(--bad)}.change-new{color:var(--ok)}.bottom-nav{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);display:flex;justify-content:center;padding-bottom:env(safe-area-inset-bottom);z-index:40}.bottom-nav{padding-left:max(4px,env(safe-area-inset-left));padding-right:max(4px,env(safe-area-inset-right))}.bottom-nav .nav-btn{flex:1;max-width:150px;border:0;background:transparent;padding:9px 3px 8px;color:#6a756f;font-size:10px}.nav-btn span{display:block;font-size:20px;line-height:1.1;margin-bottom:2px}.nav-btn.active{color:var(--brand);font-weight:800}.dialog{border:0;padding:0;background:transparent;width:min(560px,calc(100% - 24px));max-height:88vh}.dialog::backdrop{background:#0008}.dialog-card{background:#fff;border-radius:20px;padding:18px;max-height:88vh;overflow:auto}.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:10px}.dialog-head h2{margin:0}.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:92px;z-index:200;background:#17211d;color:#fff;padding:10px 13px;border-radius:12px;opacity:0;pointer-events:none;transition:.2s;max-width:min(90vw,540px);font-size:13px}.toast.show{opacity:1}.version{text-align:center;color:var(--muted);font-size:11px;margin-top:20px}
@media(max-width:620px){.grid3{grid-template-columns:1fr}.grid2{grid-template-columns:1fr}.file-buttons{grid-template-columns:1fr}.topbar{align-items:flex-start}.cloud-pill{display:none}.task{grid-template-columns:auto 1fr}.task>.task-actions{grid-column:2}.app-shell{padding-left:12px;padding-right:12px}.bottom-nav .nav-btn{font-size:9px}}