/* Variables CSS */
:root {
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --primary-light: #eef2ff;
    --secondary-color: #64748b;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --background: #f8fafc;
    --white: #ffffff;
    --text-dark: #334155;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s;
    --spacing-sm: 0.4rem;
    --spacing-md: 0.8rem;
    --spacing-lg: 0.7rem;
}
/* Estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', sans-serif;
}

body {
    background: linear-gradient(-45deg, #4361ee, #2ecc71, #3498db, #e74c3c);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
}

/* Animación de fondo */
@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Contenedor */
.container {
    width: 100%;
    padding: var(--spacing-lg);
}

/* Login Box */
.login-box {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Header y logo */
.login-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.login-header img {
    width: 160px;
    transition: var(--transition);
}

/* Formulario */
#login-form {
    display: grid;
    gap: var(--spacing-md);
}

/* Grupos de input */
.input-group {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.input-group input,
.input-group select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--background);
    transition: var(--transition);
}

.input-group input:focus,
.input-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
    outline: none;
    background: var(--white);
}

.input-group label {
    position: absolute;
    top: 50%;
    left: 2.5rem;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 0.9rem;
    pointer-events: none;
    transition: var(--transition);
}

.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label,
.input-group select:focus ~ label,
.input-group select:not([value=""]) ~ label {
    top: -0.5rem;
    left: 1.5rem;
    font-size: 0.75rem;
    background: var(--white);
    padding: 0 var(--spacing-sm);
    color: var(--primary-color);
}

/* Iconos */
.input-group .icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    font-size: 1.2rem;
}

/* Ajuste específico para el ícono de sucursal */
.input-group .icon.fa-store {
    font-size: 1.1rem; /* Ligeramente más pequeño para mejor alineación */
}

.toggle-password {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--secondary-color);
    font-size: 1.2rem;
    transition: var(--transition);
}

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

/* Botón */
.login-btn {
    padding: var(--spacing-md);
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
}

.login-btn:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

/* Enlaces */
.register-link {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
}

.register-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.register-link a:hover {
    text-decoration: underline;
}

/* Mensaje de error */
.error-message {
    background: #fee2e2;
    color: var(--error-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--error-color);
    font-size: 0.9rem;
    display: none;
    text-align: center;
}

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

.shake {
    animation: shake 0.5s ease-in-out;
}

/* Responsividad */
@media (max-width: 768px) {
    .login-box {
        padding: var(--spacing-md);
        max-width: 360px;
    }

    .login-header img {
        width: 150px;
    }
}

@media (max-width: 480px) {
    .login-box {
        padding: var(--spacing-sm);
    }

    .login-header img {
        width: 120px;
    }

    .register-link {
        font-size: 0.85rem;
    }

    .input-group input,
    .input-group select {
        font-size: 0.9rem;
    }

    .login-btn {
        font-size: 0.9rem;
    }
}