/* Reset básico */
* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }

body {
    background-color: #f4f6f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container {
    background: #ffffff;
    width: 100%;
    max-width: 400px;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    text-align: center;
}

.logo {
    max-width: 120px;
    height: auto;
    margin-bottom: 1rem;
}

.login-header h2 { color: #333; margin-bottom: 0.5rem; font-weight: 600; }
.login-header p { color: #888; font-size: 0.9rem; margin-bottom: 2rem; }

.form-group { margin-bottom: 1.2rem; text-align: left; }
.form-group label { display: block; margin-bottom: 0.5rem; color: #555; font-size: 0.9rem; font-weight: 500; }
.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}
.form-group input:focus { border-color: #4a90e2; outline: none; }

.form-actions button {
    width: 100%;
    padding: 12px;
    background-color: #4a90e2;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s;
}
.form-actions button:hover { background-color: #357abd; }
.form-actions button:disabled { background-color: #ccc; cursor: not-allowed; }

.message-box {
    margin-top: 1rem;
    font-size: 0.9rem;
    min-height: 20px;
}
.message-box.error { color: #e74c3c; }
.message-box.success { color: #2ecc71; }