:root{color-scheme:light dark;--bg: #f1f3f9;--bg-gradient: linear-gradient(160deg, #eef1ff 0%, #f6f7fb 45%, #f1f3f9 100%);--surface: #ffffff;--text: #16181d;--text-muted: #6b7280;--border: #e5e7eb;--primary: #4f46e5;--primary-dark: #4338ca;--danger: #dc2626;--success: #16a34a;--shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);--radius: 14px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,Helvetica,Arial,sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #0f1115;--bg-gradient: linear-gradient(160deg, #14162a 0%, #101217 45%, #0f1115 100%);--surface: #191b21;--text: #f1f2f4;--text-muted: #9aa0ac;--border: #2a2d35;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}body{margin:0;background:var(--bg-gradient);color:var(--text);min-height:100vh}.container{max-width:960px;margin:0 auto;padding:2rem 1.5rem}header{display:flex;justify-content:space-between;align-items:center;padding-bottom:1.25rem;margin-bottom:1.75rem;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:.6rem}.brand h1{font-size:1.35rem;margin:0;letter-spacing:-.01em}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem}.login-card{width:100%;max-width:380px;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);padding:2.5rem 2rem;text-align:center}.login-logo{display:flex;justify-content:center;margin-bottom:.75rem}.login-card h1{font-size:1.6rem;margin:0 0 .4rem;letter-spacing:-.02em}.login-subtitle{color:var(--text-muted);font-size:.9rem;margin:0 0 1.5rem}.login-divider{margin:1.25rem 0;color:var(--text-muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;position:relative}.login-divider:before,.login-divider:after{content:"";position:absolute;top:50%;width:38%;border-top:1px solid var(--border)}.login-divider:before{left:0}.login-divider:after{right:0}.login-form{text-align:left;display:flex;flex-direction:column;gap:.35rem}.login-form label{font-size:.8rem;font-weight:600;color:var(--text-muted);margin-top:.5rem}.login-error{color:var(--danger);font-size:.85rem;margin:.5rem 0 0}button,.btn{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;padding:.6rem 1.1rem;border-radius:9px;cursor:pointer;font-size:.9rem;font-weight:600;text-decoration:none;display:inline-block;text-align:center;transition:transform .05s ease,box-shadow .15s ease,opacity .15s ease;box-shadow:0 1px 2px #4f46e540}button:hover,.btn:hover{box-shadow:0 4px 12px #4f46e547}button:active,.btn:active{transform:translateY(1px)}button:disabled{opacity:.6;cursor:not-allowed;box-shadow:none}.btn-block{display:block;width:100%;box-sizing:border-box}button.secondary{background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:none}button.danger{background:linear-gradient(135deg,#ef4444,var(--danger));box-shadow:0 1px 2px #dc262640}table{width:100%;border-collapse:collapse;margin-top:1rem;background:var(--surface);border-radius:10px;overflow:hidden}th,td{text-align:left;padding:.55rem .75rem;border-bottom:1px solid var(--border);font-size:.9rem}th{color:var(--text-muted);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em}nav.tabs{display:flex;gap:.5rem;margin-bottom:1rem}nav.tabs button{background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:none}nav.tabs button.active{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-color:transparent}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;box-shadow:var(--shadow)}.card h2{margin-top:0;font-size:1.15rem}input[type=text],input[type=password]{padding:.55rem .7rem;border:1px solid var(--border);border-radius:8px;font-size:.9rem;width:100%;background:var(--surface);color:var(--text);transition:border-color .15s ease}input[type=text]:focus,input[type=password]:focus{outline:none;border-color:var(--primary)}