/* Farben: fluent.css */

* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', sans-serif;
            background: var(--surface-alt);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 16px 32px;
        }
        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-primary);
        }
        .brand-logo {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
        }
        .main {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 48px 24px;
        }
        .login-card {
            background: var(--surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            max-width: 440px;
            padding: 48px;
        }
        .login-header {
            text-align: center;
            margin-bottom: 32px;
        }
        .login-icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 28px;
            color: white;
        }
        .login-title {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .login-subtitle {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            font-weight: 500;
        }
        .form-group input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-size: 14px;
        }
        .form-group input:focus {
            outline: none;
            border-color: var(--primary);
        }
        .btn {
            width: 100%;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            background: var(--primary);
            color: white;
        }
        .btn:hover {
            background: var(--primary-dark);
        }
        .login-footer {
            text-align: center;
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .login-footer a {
            color: var(--primary);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
        }
        .error-message {
            background: rgba(255,69,58,0.12); border: 1px solid rgba(255,69,58,0.3);
            color: var(--danger);
            padding: 12px 16px;
            border-radius: var(--radius);
            margin-bottom: 20px;
            font-size: 14px;
            display: none;
        }