:root{color:#f4f7fb;font-synthesis:none;--bg:#070b14;--subtle:#0a1020;--surface:#121c2f;--surface-hover:#17233a;--border:#ffffff17;--muted:#8d9bb3;--primary:#3d7bff;--primary-soft:#3d7bff26;--success:#34d17a;--danger:#ff7f86;background:#070b14;font-family:Inter,ui-sans-serif,system-ui,sans-serif}*{box-sizing:border-box}body{background:var(--bg);min-width:320px;margin:0}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #5ac8fa6b}.shell{min-height:100vh;display:flex}.sidebar{background:var(--subtle);border-right:1px solid var(--border);z-index:3;flex-direction:column;flex:0 0 256px;gap:22px;width:256px;min-height:100vh;padding:20px 14px;display:flex}.brand{align-items:center;gap:11px;padding:2px 10px;display:flex}.brand.center{justify-content:center;margin-bottom:22px}.brand-mark{color:#fff;background:linear-gradient(140deg,#3d7bff,#5ac8fa);border-radius:11px;place-items:center;width:37px;height:37px;font-size:21px;font-weight:800;display:grid;box-shadow:0 8px 24px #3d7bff3d}.brand strong{font-size:18px;display:block}.brand small{color:var(--muted);margin-top:2px;font-size:11px;display:block}.sidebar nav{gap:5px;display:grid}.nav-item{color:#a9b6cc;text-align:left;background:0 0;border:0;border-radius:11px;align-items:center;gap:11px;width:100%;padding:11px 12px;display:flex}.nav-item:hover,.nav-item.active{background:var(--primary-soft);color:#f4f7fb}.sidebar-bottom{border-top:1px solid var(--border);gap:8px;margin-top:auto;padding-top:16px;display:grid}.profile-link{color:#f4f7fb;text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:9px;padding:8px;display:flex}.profile-link:hover{background:#ffffff0d}.profile-link b,.profile-link small{display:block}.profile-link small{color:var(--muted);text-overflow:ellipsis;max-width:140px;font-size:11px;overflow:hidden}.avatar{color:#fff;background:linear-gradient(140deg,#3d7bff,#6e7bff);border:0;border-radius:50%;flex:none;place-items:center;width:34px;height:34px;font-weight:700;display:grid}.danger-text{color:#ff9a9f}.main{flex:1;min-width:0}.topbar{border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);z-index:2;background:#0a1020cc;align-items:center;gap:12px;height:64px;padding:0 28px;display:flex;position:sticky;top:0}.icon-button{color:#a9b6cc;background:0 0;border:1px solid #0000;border-radius:10px;place-items:center;width:36px;height:36px;display:grid}.icon-button:hover{color:#fff;background:#ffffff12}.topbar>.icon-button:first-child{display:none}.crumb{color:var(--muted);align-items:center;gap:7px;font-size:13px;display:flex}.crumb b{color:#f4f7fb;font-weight:600}.top-actions{align-items:center;gap:8px;margin-left:auto;display:flex}.top-avatar{cursor:pointer}.content{max-width:1240px;margin:auto;padding:34px 28px 70px}.page-head{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:26px;display:flex}.page-head h1{letter-spacing:-.02em;margin:0 0 7px;font-size:31px;line-height:1.15}.page-head p{color:var(--muted);margin:0}.button{color:#f4f7fb;background:0 0;border:1px solid #0000;border-radius:11px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 15px;font-weight:650;display:inline-flex}.button.primary{background:var(--primary);box-shadow:0 8px 24px #3d7bff38}.button.primary:hover{background:#568cff}.button.secondary{border-color:var(--border);background:#ffffff0f}.button.secondary:hover{background:#ffffff1a}.button.wide{width:100%;margin-top:4px}.hero-grid,.detail-grid{grid-template-columns:1.35fr 1fr;gap:16px;display:grid}.welcome-panel,.quick-panel,.detail-panel{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:25px;box-shadow:0 12px 35px #00000029}.welcome-panel{background:radial-gradient(100% 100% at 0 0,#3d7bff30,transparent 65%),var(--surface)}.eyebrow{color:#8fb6ff;text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700}.welcome-panel h2,.detail-panel h2{margin:10px 0 6px;font-size:25px}.welcome-panel p,.detail-panel p{color:var(--muted);margin:0 0 18px}.metric-row{gap:38px;margin-top:28px;display:flex}.metric-row b{font-size:28px;display:block}.metric-row span{color:var(--muted);font-size:12px}.quick-panel h3{margin:0 0 14px}.quick-panel button{border:0;border-top:1px solid var(--border);color:#d8e0ed;text-align:left;background:0 0;align-items:center;gap:10px;width:100%;padding:14px 2px;display:flex}.quick-panel button:hover{color:#fff}.section-title{margin:30px 0 13px;font-size:18px}.deck-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;display:grid}.deck-card{border:1px solid var(--border);background:var(--surface);color:#f4f7fb;text-align:left;border-radius:14px;align-items:center;gap:12px;min-height:78px;padding:17px;display:flex}.deck-card:hover{background:var(--surface-hover);border-color:#5ac8fa47;transform:translateY(-1px)}.deck-dot{border-radius:50%;flex:none;width:11px;height:11px}.deck-copy{flex:1;min-width:0}.deck-copy b,.deck-copy small{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.deck-copy small{color:var(--muted);margin-top:4px;font-size:12px}.empty-panel,.state{text-align:center;min-height:220px;color:var(--muted);border:1px dashed #ffffff24;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:30px;display:flex}.empty-panel svg,.state svg{color:#8fb6ff}.empty-panel h3{color:#f4f7fb;margin:4px 0 0}.empty-panel p{margin:0 0 10px}.state.full{border:0;min-height:100vh}.state.error{color:#ff9a9f}.detail-panel.accent{background:radial-gradient(100% 100% at 100% 0,#34d17a21,transparent 70%),var(--surface)}.auth-page{place-items:center;min-height:100vh;padding:24px;display:grid}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:18px;width:min(100%,420px);padding:30px;box-shadow:0 24px 70px #0000004d}.auth-card h1{text-align:center;margin:0 0 8px}.auth-card>p{text-align:center;color:var(--muted);margin:0 0 25px}.auth-card label{color:#a9b6cc;margin-top:15px;font-size:13px;font-weight:650;display:block}.auth-card input{border:1px solid var(--border);color:#fff;background:#0c1424;border-radius:10px;width:100%;margin-top:7px;padding:12px;display:block}.form-error{color:#ff9a9f;background:#ff5a5f1a;border:1px solid #ff5a5f33;border-radius:9px;margin:14px 0;padding:10px;font-size:13px}.link-button{color:#8fb6ff;background:0 0;border:0;margin:17px auto 0;display:block}.mobile-tabs{display:none}.note-form{gap:16px;max-width:720px;display:grid}.note-form label{color:#a9b6cc;gap:7px;font-size:13px;font-weight:650;display:grid}.note-form input,.note-form textarea,.note-form select{border:1px solid var(--border);color:#fff;background:#0c1424;border-radius:10px;width:100%;padding:12px}.note-form textarea{resize:vertical;min-height:130px}.form-message{color:#8fe7b1}.study-page{align-content:center;justify-items:center;gap:18px;min-height:calc(100vh - 130px);display:grid}.study-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;flex-direction:column;justify-content:center;align-items:center;gap:24px;width:min(100%,760px);min-height:360px;padding:38px;display:flex;box-shadow:0 20px 70px #00000038}.study-text{text-align:center;place-items:center;width:100%;min-height:130px;font-size:27px;line-height:1.35;display:grid}.rating-row{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.rating-row .button{text-transform:capitalize}.check-row{color:var(--muted);align-items:center;gap:8px;margin:8px 0;display:flex}fieldset{border:1px solid var(--border);border-radius:8px;margin:0;padding:12px}legend{color:var(--muted);padding:0 6px}.toolbar input,.toolbar select{background:var(--surface);border:1px solid var(--border);min-height:42px;color:inherit;border-radius:8px;padding:0 12px}.toolbar input{flex:1}.media-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;display:grid}.media-card{flex-direction:column;gap:10px;display:flex}.media-card img{aspect-ratio:16/10;object-fit:cover;background:var(--subtle);border-radius:8px;width:100%}.media-card audio{width:100%}.media-card small{color:var(--muted)}.button-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.browse-list{gap:14px;display:grid}.note-fields p{grid-template-columns:100px 1fr;gap:12px;margin:8px 0;display:grid}.note-fields span{overflow-wrap:anywhere}.editor-panel{gap:14px;max-width:900px;margin-top:18px;display:grid}.editor-panel textarea{min-height:90px}.preview-card{border:1px solid var(--border);background:var(--subtle);border-radius:8px;gap:6px;padding:12px;display:grid}.preview-card span{color:var(--muted)}.editor-panel .page-head{margin-bottom:0}.pagination{justify-content:center;align-items:center;gap:16px;margin-top:20px;display:flex}.danger{color:#ffd4d7!important;background:#ff7f8614!important;border-color:#ff7f8666!important}@media (width<=800px){.toolbar{grid-template-columns:1fr;display:grid}.mobile-tabs{grid-template-columns:repeat(4,1fr);overflow-x:auto}.mobile-tabs button{min-width:76px}.media-grid{grid-template-columns:1fr}.note-fields p{grid-template-columns:1fr;gap:3px}}