/**
 * Login CSS - Sistema de Gestión
 * Estilos para la página de login
 */

/* Variables CSS */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f2f2f2;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* Login Container */
.login-container {
    position: relative;
    width: 100%;
    max-width: 450px;
    z-index: 10;
}

/* Login Card */
.login-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color));
}

/* Login Header */
.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
}

.subtitle {
    color: var(--secondary-color);
    font-size: 1rem;
    margin: 0;
}

/* Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-danger {
    background-color: #f8d7da;
    color: var(--danger-color);
}

.alert-success {
    background-color: #d4edda;
    color: var(--success-color);
}

.alert i {
    font-size: 1.25rem;
}

/* Form */
.login-form {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-group label i {
    color: #8B0000;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background-color: white;
}

.form-control:focus {
    outline: none;
    border-color: #8B0000;
    box-shadow: 0 0 0 0.2rem rgba(139, 0, 0, 0.25);
}

.form-control::placeholder {
    color: #adb5bd;
}

/* Password Input */
.password-input {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: var(--transition);
}

.password-toggle:hover {
    color: #8B0000;
    background-color: var(--light-color);
}

/* Checkbox */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
}

.form-check-label {
    font-weight: 500;
    color: var(--dark-color);
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #8B0000, #A52A2A);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #A52A2A, #8B0000);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(139, 0, 0, 0.3);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
    transform: translateY(-1px);
}

.btn-outline-secondary {
    background-color: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
}

.btn-outline-secondary:hover {
    background-color: var(--secondary-color);
    color: white;
}

.btn-block {
    width: 100%;
}

/* Login Footer */
.login-footer {
    text-align: center;
}

.forgot-password {
    color: #8B0000;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.forgot-password:hover {
    color: #A52A2A;
    text-decoration: underline;
}

.divider {
    position: relative;
    text-align: center;
    margin: 1.5rem 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: #e9ecef;
}

.divider span {
    background-color: white;
    padding: 0 1rem;
    color: var(--secondary-color);
    font-size: 0.875rem;
}

.social-login {
    margin-top: 1rem;
}

/* Background Pattern */
.login-background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.background-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255,255,255,0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-20px) rotate(1deg);
    }
    66% {
        transform: translateY(10px) rotate(-1deg);
    }
}

/* Responsive Design */
@media (max-width: 480px) {
    .login-card {
        padding: 2rem 1.5rem;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.875rem 1.25rem;
    }
}

/* Loading State */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Focus States */
.form-control:focus,
.btn:focus {
    outline: none;
}

/* Animation for form elements */
.form-group {
    animation: slideInUp 0.6s ease-out;
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }

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

/* Custom checkbox styles */
.form-check-input:checked {
    background-color: #8B0000;
    border-color: #8B0000;
}

.form-check-input:focus {
    border-color: #8B0000;
    box-shadow: 0 0 0 0.2rem rgba(139, 0, 0, 0.25);
}

/* Error states */
.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-control.is-invalid:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--danger-color);
}

/* Success states */
.form-control.is-valid {
    border-color: var(--success-color);
}

.form-control.is-valid:focus {
    border-color: var(--success-color);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

/* Print styles */
@media print {
    .login-background {
        display: none;
    }
    
    .login-card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
}