/* 
Login Page Styles
Estilos específicos para la página de inicio de sesión
*/

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

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 40px var(--shadow-medium);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.login-header h1 {
    font-size: var(--font-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: var(--text-secondary);
    font-size: var(--font-lg);
    font-weight: 400;
}

.error-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    animation: shake 0.5s ease-in-out;
}

.error-icon {
    font-size: var(--font-lg);
    flex-shrink: 0;
}

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

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 500;
    font-size: var(--font-sm);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-group input {
    padding: var(--spacing-md);
    font-size: var(--font-base);
    border: 2px solid var(--input-border);
    border-radius: var(--radius-md);
    background-color: var(--input-bg);
    color: var(--text-primary);
    transition: all var(--transition-medium);
}

.form-group input:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(79, 158, 255, 0.1);
    transform: translateY(-1px);
}

.form-group input::placeholder {
    color: var(--text-placeholder);
    font-style: italic;
}

.login-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--btn-primary-text);
    cursor: pointer;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 158, 255, 0.3);
}

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

.login-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.login-button:hover::before {
    left: 100%;
}

.button-text {
    position: relative;
    z-index: 1;
}

.button-icon {
    font-size: var(--font-lg);
    transition: transform var(--transition-medium);
    position: relative;
    z-index: 1;
}

.login-button:hover .button-icon {
    transform: translateX(3px);
}

.login-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
}

.login-footer p {
    color: var(--text-secondary);
    font-size: var(--font-sm);
}

.help-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.help-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    z-index: var(--z-modal);
    color: var(--text-primary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(79, 158, 255, 0.2);
    border-left: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    font-size: var(--font-lg);
    font-weight: 500;
}

/* Responsividad */
@media (max-width: 768px) {
    .login-container {
        padding: var(--spacing-md);
    }
    
    .login-card {
        padding: var(--spacing-xl);
    }
    
    .login-header h1 {
        font-size: var(--font-2xl);
    }
    
    .login-header p {
        font-size: var(--font-base);
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: var(--spacing-sm);
    }
    
    .login-card {
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }
    
    .login-header h1 {
        font-size: var(--font-xl);
    }
    
    .form-group input {
        padding: var(--spacing-sm);
        font-size: var(--font-sm);
    }
    
    .login-button {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-sm);
    }
}

/* Animaciones de entrada */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card {
    animation: slideUp 0.6s ease-out;
}

/* Estados de los inputs */
.form-group input:valid {
    border-color: var(--success);
}

.form-group input:invalid:not(:placeholder-shown) {
    border-color: var(--error);
}

/* Efecto de focus mejorado */
.form-group {
    position: relative;
}

.form-group input:focus + .focus-indicator {
    transform: scaleX(1);
}

.focus-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    transform: scaleX(0);
    transition: transform var(--transition-medium);
    border-radius: var(--radius-sm);
}

/* Accesibilidad mejorada */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .login-button::before {
        display: none;
    }
}

/* Modo alto contraste */
@media (prefers-contrast: high) {
    .login-card {
        border: 2px solid var(--border-secondary);
    }
    
    .form-group input {
        border-width: 2px;
    }
    
    .login-button {
        border: 2px solid var(--accent-primary);
    }
}