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

:root {
    --primary: #2c5aa0;
    --primary-light: #3a6fc7;
    --primary-dark: #1e3f73;
    --accent: #4a90e2;
    --light: #f8f9fa;
    --dark: #2d3748;
    --gray: #718096;
    --gray-light: #e2e8f0;
    --white: #ffffff;
    --error: #e53e3e;
    --error-light: #fed7d7;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--dark);
    line-height: 1.6;
}

/* Contenedor principal */
.login-container {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

/* Tarjeta de login */
.login-card {
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 30px;
    transition: all 0.3s ease;
}

.login-card:hover {
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

/* Encabezado */
.login-header {
    text-align: center;
    margin-bottom: 25px;
}

.login-logo {
    margin-bottom: 20px;
}

.login-logo img {
    max-width: 180px;
    height: auto;
}

.login-title {
    color: var(--primary);
    font-weight: 600;
    font-size: 24px;
    margin-bottom: 8px;
}

.login-subtitle {
    color: var(--gray);
    font-size: 15px;
}

/* Formulario */
.login-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
    font-size: 14px;
}

.input-with-icon {
    position: relative;
}

.input-with-icon i:first-of-type {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    font-size: 16px;
}

.input-with-icon .toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    font-size: 16px;
    transition: color 0.3s;
}

.input-with-icon .toggle-password:hover {
    color: var(--primary);
}

.form-control {
    width: 100%;
    padding: 14px 16px 14px 42px;
    font-size: 15px;
    border: 1px solid var(--gray-light);
    border-radius: 6px;
    transition: all 0.3s;
    background-color: var(--light);
    color: var(--dark);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
    background-color: var(--white);
}

/* Botón */
.btn-primary {
    background-color: var(--primary);
    border: none;
    color: white;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-primary:hover {
    background-color: var(--primary-light);
}

.btn-primary:active {
    background-color: var(--primary-dark);
}

/* Alertas */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-error {
    background-color: var(--error-light);
    color: var(--error);
    border: 1px solid #feb2b2;
}

.alert i {
    font-size: 18px;
}

/* Enlaces */
.login-links {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.login-links a {
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.login-links a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Responsive para móviles */
@media (max-width: 576px) {
    body {
        padding: 15px;
        background-color: #f5f7fa;
    }
    
    .login-container {
        max-width: 100%;
    }
    
    .login-card {
        padding: 25px 20px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    }
    
    .login-title {
        font-size: 22px;
    }
    
    .login-subtitle {
        font-size: 14px;
    }
    
    .form-control {
        padding: 12px 14px 12px 40px;
    }
    
    .input-with-icon i:first-of-type {
        font-size: 15px;
        left: 12px;
    }
    
    .btn-primary {
        padding: 12px;
    }
    
    .login-links {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-card {
    animation: fadeIn 0.5s ease-out;
}

/* Mejoras para inputs numéricos en móviles */
input[type="number"] {
    -webkit-appearance: none;
    -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Efectos para dispositivos táctiles */
@media (hover: none) {
    .btn-primary:hover {
        background-color: var(--primary);
    }
}