/**
 * Estilos para la página de login
 * Sistema MODIA - Gestión Textil
 */

/* Variables de colores */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --light-bg: #ecf0f1;
    --dark-text: #2c3e50;
    --light-text: #7f8c8d;
    --border-color: #bdc3c7;
}

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    overflow: hidden;
}

/* Contenedor principal con imagen de fondo */
.login-container {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Imagen de fondo */
.login-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/textil-background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: brightness(0.7);
    z-index: -1;
}

/* Overlay oscuro */
.login-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

/* Caja de login */
.login-box {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(10px);
    animation: fadeIn 0.8s ease-out;
}

/* Animación de entrada */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Logo y título */
.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 36px;
}

.login-title {
    color: var(--dark-text);
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 5px;
}

.login-subtitle {
    color: var(--light-text);
    font-size: 14px;
}

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

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

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* Grupo de input con icono */
.input-group {
    position: relative;
}

.input-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--light-text);
    font-size: 18px;
}

.form-control.with-icon {
    padding-right: 45px;
}

/* Checkbox recordar */
.form-check {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.form-check-input {
    margin-right: 8px;
}

.form-check-label {
    color: var(--dark-text);
    font-size: 14px;
    cursor: pointer;
}

/* Botón de login */
.btn-login {
    width: 100%;
    padding: 12px;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background: #2980b9;
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.btn-login:active {
    transform: translateY(0);
}

.btn-login:disabled {
    background: var(--light-text);
    cursor: not-allowed;
    transform: none;
}

/* Mensajes de alerta */
.alert {
    padding: 12px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-danger {
    background: #fee;
    color: var(--danger-color);
    border: 1px solid #fcc;
}

.alert-warning {
    background: #ffeaa7;
    color: #d68910;
    border: 1px solid #fdcb6e;
}

.alert-success {
    background: #d5f4e6;
    color: var(--success-color);
    border: 1px solid #a9dfbf;
}

/* Link de ayuda */
.login-help {
    text-align: center;
    margin-top: 20px;
}

.login-help a {
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 14px;
}

.login-help a:hover {
    text-decoration: underline;
}

/* Spinner de carga */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 576px) {
    .login-box {
        margin: 20px;
        padding: 30px 20px;
    }
    
    .login-title {
        font-size: 20px;
    }
    
    .login-logo {
        width: 60px;
        height: 60px;
        font-size: 28px;
    }
}

/* Efectos de validación */
.form-control.is-invalid {
    border-color: var(--danger-color);
    animation: shake 0.3s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.invalid-feedback {
    color: var(--danger-color);
    font-size: 12px;
    margin-top: 5px;
}