* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #1d1216 0%, #ee2c28 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* BOTON REGRESAR AL INICIO */
.btn-back-home {
    position: fixed;
    top: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: white;
    color: #1a3e6f;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: bold;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    z-index: 1000;
    border: 2px solid transparent;
}

.btn-back-home:hover {
    background: #1a3e6f;
    color: white;
    transform: translateX(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    border-color: white;
}

.btn-back-home svg {
    transition: transform 0.3s ease;
}

.btn-back-home:hover svg {
    transform: translateX(-3px);
    stroke: white;
}

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    color: #1a3e6f;
    margin: 20px 0 10px;
    font-size: 24px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

.logo-large {
    display: block;
    margin: 0 auto;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.form-group input[type="email"],
.form-group input[type="password"] {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #1a3e6f;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
}

.btn-login-submit {
    background: #1a3e6f;
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
    margin-top: 10px;
}

.btn-login-submit:hover {
    background: #e74c3c;
}

.error-message {
    color: #e74c3c;
    font-size: 14px;
    text-align: center;
    min-height: 20px;
}

.login-footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.test-credentials {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.test-credentials p {
    margin: 5px 0;
    font-size: 13px;
    color: #555;
}

.test-credentials strong {
    color: #1a3e6f;
}

.help-text {
    text-align: center;
    color: #999;
    font-size: 12px;
    margin-top: 15px;
}

.logo-large text {
    font-family: 'Arial', sans-serif;
}

/* Responsive para el boton de regresar */
@media (max-width: 480px) {
    .btn-back-home {
        top: 10px;
        left: 10px;
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .btn-back-home svg {
        width: 16px;
        height: 16px;
    }
    
    .login-box {
        padding: 30px 20px;
    }
    
    .login-header h2 {
        font-size: 20px;
    }
}