* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
    body { background-image: linear-gradient(rgba(15, 23, 42, 0.75), rgba(15, 23, 42, 0.85)), url('/static/img/clouds.png'); background-size: cover; background-position: center; background-attachment: fixed; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
    .login-card { background-color: #ffffff; width: 100%; max-width: 950px; min-height: 600px; border-radius: 24px; display: flex; overflow: hidden; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); }
    .form-section { flex: 1.2; padding: 60px 60px 40px 60px; display: flex; flex-direction: column; justify-content: space-between; }
    .logo-container { display: flex; justify-content: center; margin-bottom: 30px; width: 100%; }
    .logo-container img { height: 64px; width: auto; display: block; }
    .header-content h1 { font-size: 2.2rem; color: #0f172a; margin-bottom: 10px; }
    .header-content p { color: #64748b; font-size: 0.95rem; line-height: 1.5; margin-bottom: 30px; max-width: 90%; }
    .input-group { margin-bottom: 20px; }
    .input-group label { display: block; font-size: 0.85rem; font-weight: 600; color: #475569; margin-bottom: 8px; }
    .input-group input { width: 100%; padding: 14px 20px; border-radius: 50px; border: 2px solid transparent; background-color: #f1f5f9; font-size: 0.95rem; color: #1e293b; outline: none; transition: all 0.2s ease; }
    .input-group input:focus { border-color: #38bdf8; background-color: #ffffff; }
    .submit-btn { display: inline-block; width: auto; min-width: 160px; padding: 14px 32px; border-radius: 50px; border: none; background-color: #0ea5e9; color: white; font-weight: 600; font-size: 1rem; cursor: pointer; transition: background-color 0.2s ease, transform 0.1s ease; margin-top: 10px; }
    .submit-btn:hover { background-color: #0284c7; }
    .submit-btn:active { transform: scale(0.98); }
    .footer-text { font-size: 0.75rem; color: #94a3b8; margin-top: 50px; }
    .image-section { flex: 1; background-image: url('/static/img/login.png'); background-size: cover; background-position: center; position: relative; }
    .image-section::after { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(to right, rgba(255,255,255,0.1), rgba(0,0,0,0.3)); }
    
    /* Error message styling */
    .error-message { background-color: #fee2e2; color: #b91c1c; padding: 12px 16px; border-radius: 8px; font-size: 0.9rem; font-weight: 600; margin-bottom: 20px; border-left: 4px solid #ef4444; }

    @media (max-width: 768px) { 
        .login-card { flex-direction: column; min-height: auto; } 
        .image-section { display: none; } /* Hierdoor verdwijnt de foto op mobiel */
        .form-section { padding: 40px 30px; } 
    }