:root{--bg: #141414;--surface: #1e1e1e;--surface-2: #2a2a2a;--border: #3a3a3a;--text: #e8e8e8;--muted: #9a9a9a;--accent: #4f6cff;--accent-hover: #3d58e6;--danger: #e2445c;--success: #00c875;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.4;-webkit-text-size-adjust:100%}h1,h2{margin:0;font-weight:600}p{margin:0 0 12px}.muted{color:var(--muted)}.small{font-size:13px}.error{color:var(--danger);font-size:14px}.success{color:var(--success);font-size:14px}.center{min-height:100%;display:flex;align-items:center;justify-content:center;padding:16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px}.narrow{width:100%;max-width:380px}.logo{font-size:22px;margin-bottom:20px}.field{display:block;margin-bottom:14px}.field>span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}input,select,textarea{width:100%;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:10px 12px;font:inherit;font-size:16px}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}input[type=checkbox]{width:auto}.row{display:flex;gap:8px}.btn{background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:9px 14px;font:inherit;cursor:pointer;white-space:nowrap}.btn:hover{border-color:#555}.btn:disabled{opacity:.6;cursor:default}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-hover)}.btn.danger{color:var(--danger)}.btn.ghost{background:transparent}.btn.small{padding:6px 10px;font-size:13px}.btn.wide{width:100%;margin-bottom:12px}.icon-btn{background:var(--surface-2);border:none;color:var(--text);width:40px;height:40px;border-radius:10px;font-size:20px;cursor:pointer;flex-shrink:0}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg);border-bottom:1px solid var(--border)}.topbar-title{font-size:20px;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.menu-wrap{position:relative}.menu{position:absolute;right:0;top:46px;min-width:220px;background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden;box-shadow:0 8px 24px #00000080}.menu-head{display:flex;flex-direction:column;padding:12px 14px;border-bottom:1px solid var(--border)}.menu button{display:block;width:100%;text-align:left;background:none;border:none;color:var(--text);padding:12px 14px;font:inherit;cursor:pointer}.menu button:hover{background:var(--surface-2)}.page{padding:16px;max-width:1100px;margin:0 auto}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px}.check{display:flex;align-items:center;gap:6px;color:var(--muted)}.student-list{display:flex;flex-direction:column;gap:8px}.student{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:8px;padding:12px 14px}.student.blocked{border-left-color:var(--danger);opacity:.7}.student-main{display:flex;flex-direction:column;align-items:flex-start;background:none;border:none;color:inherit;font:inherit;text-align:left;padding:0;cursor:pointer;min-width:0}.student-name{font-weight:600;display:flex;gap:8px;align-items:center;flex-wrap:wrap}.student-stats{display:flex;flex-direction:column;align-items:flex-end}.student-actions{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}.tag{font-size:11px;font-weight:500;padding:2px 6px;border-radius:4px;background:var(--surface-2);color:var(--muted)}.tag.red{background:#e2445c26;color:var(--danger)}@media(max-width:720px){.student{grid-template-columns:1fr;gap:10px}.student-stats{flex-direction:row;gap:12px;align-items:baseline}.student-actions{justify-content:flex-start}}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;background:#0009;display:flex;align-items:center;justify-content:center;padding:16px}.modal{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px;max-height:90vh;overflow:auto}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.modal-head h2{font-size:18px}@media(max-width:720px){.overlay{align-items:flex-end;padding:0}.modal{max-width:none;border-radius:16px 16px 0 0}}.creds{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px;white-space:pre-wrap;word-break:break-all;font-size:14px;margin:0 0 14px}