* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e9f2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #2d3748;
}
.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.login-card {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    width: 320px;
    max-width: 90%;
    text-align: center;
}
.login-card h2 { margin-bottom: 20px; color: #1a73e8; }
input, select, button {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.2s;
}
input:focus, select:focus {
    border-color: #1a73e8;
    outline: none;
    box-shadow: 0 0 0 3px rgba(26,115,232,0.2);
}
.btn-primary {
    background: linear-gradient(135deg, #1a73e8 0%, #1557b0 100%);
    color: white;
    border: none;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
}
.btn-primary:active { transform: scale(0.98); }
.btn-danger {
    background: #e53e3e;
    color: white;
    border: none;
}
.card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.alert { padding: 10px; border-radius: 8px; margin: 10px 0; font-size: 0.9rem; }
.alert-error { background: #fed7d7; color: #c53030; }
.alert-success { background: #c6f6d5; color: #276749; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 8px; border-bottom: 1px solid #e2e8f0; font-size: 0.85rem; }
th { color: #4a5568; }
.frozen { background: #fff5f5; }
@media (max-width: 480px) {
    body { padding: 10px; }
    .card { padding: 15px; }
}
.btn-refresh {
    padding: 6px 14px;
    border: 1px solid #dadce0;
    border-radius: 8px;
    background: white;
    color: #5f6368;
    font-size: 0.85rem;
    cursor: pointer;
}
.btn-primary {
    padding: 10px 28px;
    border: none;
    border-radius: 8px;
    background: #1a73e8;
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
}