:root{--bg: #f3f5f9;--surface: #ffffff;--border: #e6e9f0;--text: #1f2632;--muted: #6f7886;--primary: #1ba0e5;--success: #1ab86a;--danger: #ea4d5a;--radius-lg: 14px;--radius-md: 10px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:var(--bg)}input,button{font:inherit}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md)}.auth-screen{min-height:100%;display:grid;place-items:center;padding:32px}.login-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:0 10px 30px #14203414}.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:8px}.logo-box{width:40px;height:40px;border-radius:8px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700}.login-title{margin:8px 0 2px;text-align:center}.login-subtitle{margin:0 0 18px;text-align:center;color:var(--muted);font-size:14px}.security-note{border:1px solid var(--border);border-radius:10px;background:#fbfcfe;padding:12px;margin-bottom:16px;color:var(--muted);font-size:13px}.security-note strong{display:block;color:var(--text);margin-bottom:2px}.field{margin-bottom:14px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:7px}.field input{width:100%;border:1px solid #d8dde7;border-radius:10px;padding:11px 12px;outline:none}.field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #1ba0e51f}.inline-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);margin-bottom:14px}.remember{display:flex;align-items:center;gap:8px}.login-btn{width:100%;border:0;border-radius:10px;background:var(--primary);color:#fff;padding:11px 16px;font-weight:600;cursor:pointer}.error-text{color:var(--danger);margin:0 0 12px;font-size:13px}.auth-footer{margin-top:14px;border-top:1px solid var(--border);padding-top:12px;color:var(--muted);font-size:12px;text-align:center}.auth-links{display:flex;justify-content:space-between;font-size:13px;margin-top:10px;color:var(--muted)}.auth-link-btn{border:0;background:transparent;color:#4f5b6f;padding:0;font-size:13px;cursor:pointer}.auth-link-btn:hover{color:var(--primary)}.dashboard-shell{min-height:100%;display:flex}.sidebar{width:250px;background:var(--surface);border-right:1px solid var(--border);padding:14px 12px;transition:width .2s ease;overflow:hidden;display:flex;flex-direction:column}.sidebar.collapsed{width:76px}.brand-row{display:flex;align-items:center;gap:10px;padding:0 8px 14px;border-bottom:1px solid var(--border);margin-bottom:10px}.brand-name{font-weight:700;color:var(--primary)}.menu-list{list-style:none;margin:0;padding:0;flex:1}.menu-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:10px;color:#4a5363;margin-bottom:3px;font-size:14px}.menu-link{text-decoration:none}.menu-item.active{background:var(--primary);color:#fff;font-weight:600}.menu-item .left{display:flex;align-items:center;gap:8px}.sidebar.collapsed .brand-row{justify-content:center}.sidebar.collapsed .menu-item{justify-content:center;padding:10px 8px}.sidebar.collapsed .menu-item .left{justify-content:center}.dot-icon{width:14px;height:14px;border-radius:4px;border:1px solid currentColor}.sidebar-profile{border-top:1px solid var(--border);margin-top:8px;padding:12px 8px 6px;display:flex;align-items:center;gap:10px}.sidebar-profile-main{border:0;background:transparent;padding:0;text-align:left;cursor:pointer;flex:1}.sidebar-profile-avatar{width:34px;height:34px;border-radius:999px;background:#d9eef8;display:grid;place-items:center;font-size:14px}.sidebar-profile-name{font-size:13px;font-weight:600;color:#2c3543}.sidebar-profile-meta{font-size:11px;color:#6f7886}.sidebar-profile-text{flex:1;min-width:0}.sidebar-profile-actions{display:flex;gap:6px}.sidebar-action-btn,.sidebar-logout{border:1px solid #d7ddea;background:#fff;color:#495364;border-radius:8px;padding:6px 10px;font-size:12px;cursor:pointer}.sidebar-logout.collapsed,.sidebar-action-btn.collapsed{width:32px;height:32px;padding:0;display:grid;place-items:center}.sidebar-profile.collapsed{justify-content:center;padding-left:0;padding-right:0}.layout-main{flex:1;min-width:0}.top-header{height:60px;background:var(--surface);border-bottom:1px solid var(--border);padding:0 18px;display:grid;grid-template-columns:180px 1fr auto;align-items:center;gap:16px}.header-title-row{display:flex;align-items:center;gap:10px}.sidebar-toggle{border:1px solid var(--border);background:#fff;border-radius:8px;width:30px;height:30px;display:grid;place-items:center;cursor:pointer}.portal-title{font-weight:600}.search-box{width:100%;max-width:520px;border:1px solid var(--border);border-radius:10px;background:#fafbfe;padding:9px 12px}.user-chip{display:flex;align-items:center;gap:10px}.user-meta{font-size:12px;color:var(--muted)}.avatar{width:30px;height:30px;border-radius:999px;background:#d9eef8;display:grid;place-items:center;font-size:12px}.content-wrap{padding:18px}.hero{background:linear-gradient(120deg,#e7f4fd,#e9eef4);border:1px solid #dde8f2;border-radius:12px;padding:18px 22px;margin-bottom:18px}.hero h2{margin:2px 0;font-size:36px;line-height:1}.hero 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#e3e7ef;border-radius:10px;padding:12px;margin-bottom:10px}.notice-level{display:inline-block;border-radius:6px;padding:2px 8px;font-size:11px;font-weight:700;margin-bottom:6px}.notice-level.high{color:#df3945;background:#ffeef1}.notice-level.medium{color:#b18000;background:#fff6dc}.notice-level.low{color:#0487c6;background:#e9f7ff}.portfolio-grid,.class-grid{display:grid;grid-template-columns:repeat(4,minmax(180px,1fr));gap:14px}.mini-card{padding:14px}.mini-head{display:flex;align-items:center;justify-content:space-between}.badge-blue{background:#e7f5ff;color:#178fce;border-radius:999px;font-size:12px;padding:4px 10px}.class-grid{grid-template-columns:repeat(2,minmax(260px,1fr))}.class-card{border-left:3px solid var(--primary);padding:14px}.row{display:flex;align-items:center;justify-content:space-between;gap:10px}.btn{border:1px solid #d7ddea;background:#fff;border-radius:9px;padding:8px 12px;font-size:13px}.btn.primary{background:var(--primary);color:#fff;border-color:transparent}@media (max-width: 1200px){.stat-grid,.portfolio-grid{grid-template-columns:repeat(2,minmax(170px,1fr))}.split{grid-template-columns:1fr}}@media (max-width: 900px){.top-header{grid-template-columns:1fr;height:auto;padding:12px}.class-grid,.stat-grid,.portfolio-grid{grid-template-columns:1fr}}