:root{--color-bg: #f6f6f8;--color-surface: #fff;--color-border: #e1e3e8;--color-text: #1f2329;--color-text-muted: #6b7280;--color-primary: #1f3a93;--color-primary-hover: #16306b;--color-success: #1b5e20;--color-warning: #7a5400;--color-error: #7a1f17;--color-error-bg: #fdecea;--color-success-bg: #e8f5e9;--color-warning-bg: #fff8e1;--radius: 6px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px}*{box-sizing:border-box}body{margin:0;background:var(--color-bg);color:var(--color-text)}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2{margin:0 0 1rem}h1{font-size:1.5rem}h2{font-size:1.15rem}.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#1c2333;color:#cdd2dc;padding:1rem 0;display:flex;flex-direction:column}.sidebar .brand{font-size:1.1rem;font-weight:700;padding:.5rem 1.25rem 1rem}.sidebar .brand a{color:#fff}.sidebar nav{display:flex;flex-direction:column;flex:1}.sidebar nav a{color:#cdd2dc;padding:.65rem 1.25rem;border-left:3px solid transparent}.sidebar nav a:hover{background:#283045;text-decoration:none}.sidebar nav a.active{background:#283045;border-left-color:var(--color-primary);color:#fff}.user-area{border-top:1px solid #2c3447;padding:1rem 1.25rem;font-size:.85rem}.user-name{color:#fff;font-weight:600}.user-role{color:#9aa3b8;margin-bottom:.5rem}.btn-link{background:none;border:0;color:#9aa3b8;padding:0;cursor:pointer;text-decoration:underline}.btn-link:hover{color:#fff}main{padding:1.5rem 2rem;max-width:1100px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.25rem;margin-bottom:1rem}.btn{display:inline-block;padding:.5rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius);background:#fff;font-size:.9rem;cursor:pointer}.btn:hover:not(:disabled){background:#f3f4f8}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-danger{background:#b73c2c;color:#fff;border-color:#b73c2c}.btn-sm{padding:.25rem .6rem;font-size:.8rem}label{display:block;margin-bottom:.75rem;font-size:.85rem}label span{display:block;color:var(--color-text-muted);margin-bottom:.2rem}input,select,textarea{width:100%;padding:.45rem .6rem;border:1px solid var(--color-border);border-radius:var(--radius);font-family:inherit;font-size:.9rem}textarea{resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.data-table{width:100%;border-collapse:collapse;font-size:.85rem}.data-table th,.data-table td{padding:.5rem .75rem;border-bottom:1px solid var(--color-border);text-align:left}.data-table th{background:#fafbfc;font-weight:600}.alert{padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.9rem}.alert-error{background:var(--color-error-bg);color:var(--color-error)}.alert-success{background:var(--color-success-bg);color:var(--color-success)}.alert-warning{background:var(--color-warning-bg);color:var(--color-warning)}.badge{display:inline-block;padding:.15rem .5rem;border-radius:12px;font-size:.75rem;font-weight:600}.badge-success{background:var(--color-success-bg);color:var(--color-success)}.badge-warning{background:var(--color-warning-bg);color:var(--color-warning)}.badge-error{background:var(--color-error-bg);color:var(--color-error)}.badge-muted{background:#eef0f4;color:#4b5563}.login-screen{display:flex;align-items:center;justify-content:center;min-height:100vh}.login-card{max-width:380px;padding:2rem}.login-card h1{font-size:1.25rem}