body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f3f4f6;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 380px;
    box-sizing: border-box;
}

/* Textos del encabezado */
.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    margin: 0 0 8px;
    color: #1f2937;
    font-size: 24px;
}

.login-header p {
    margin: 0;
    color: #6b7280;
    font-size: 14px;
}

/* Estilos de los campos de texto */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #374151;
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 15px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Estilo del botón */
.form-actions button {
    width: 100%;
    padding: 12px;
    background-color: #3b82f6;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.form-actions button:hover {
    background-color: #2563eb;
}

/* Mensaje de error (rojo) */
.alert-error {
    background-color: #fee2e2;
    color: #b91c1c;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    border: 1px solid #f87171;
    text-align: center;
}