/* --- Variables de Color --- */
:root {
    --primary-color: #007bff;
    --light-color: #f8f9fa;
    --input-border-color: #ced4da;
    --text-color: #333;
    --border-color: #dee2e6;
}

/* --- Reset y Estilos Generales del Body --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: var(--text-color);
    font-size: 15px;
    line-height: 1.6;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
*, *:before, *:after {
    box-sizing: inherit;
}

/* --- Estilos Específicos de la Página de Inicio de Sesión --- */
.login-page {
    background-color: #f9f9f9;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.login-box {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-box h2 {
    margin: 0 0 10px;
    font-size: 20px;
    color: var(--text-color);
}

.login-box p {
    margin: 0 0 20px;
    font-size: 12px;
    color: #666;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--input-border-color);
    border-radius: 4px;
    font-size: 14px;
}

.form-group input:focus {
    border-color: #86b7fe;
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.btn-primary {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 15px;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #0056b3;
}

.error-message {
    color: #dc3545;
    font-size: 14px;
    margin-bottom: 15px;
}