/* ============================================
   SETTINGS PANEL - NOW.TUDEXNETWORKS.COM
   ============================================ */

.settings-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: none;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.settings-panel.active {
    display: flex;
    opacity: 1;
}

.settings-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
}

.settings-content {
    position: relative;
    margin: auto;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    background: var(--glass-background);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Header */
.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
}

.settings-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
}

.settings-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.settings-close:hover {
    background: var(--color-surface-hover);
    color: var(--color-text-primary);
    transform: rotate(90deg);
}

.settings-close svg {
    width: 24px;
    height: 24px;
}

/* Body */
.settings-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6);
}

.settings-section {
    margin-bottom: var(--space-8);
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* Theme Selector */
.theme-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-3);
}

.theme-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.theme-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-elevated);
    transform: translateY(-2px);
}

.theme-btn.active {
    border-color: var(--color-primary);
    background: var(--color-surface-elevated);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

.theme-preview {
    width: 60px;
    height: 40px;
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.theme-preview::before,
.theme-preview::after {
    content: '';
    position: absolute;
    width: 50%;
    height: 100%;
}

.theme-preview::before {
    left: 0;
}

.theme-preview::after {
    right: 0;
}

.theme-default::before {
    background: hsl(250, 84%, 54%);
}

.theme-default::after {
    background: hsl(340, 82%, 52%);
}

.theme-ocean::before {
    background: hsl(200, 100%, 50%);
}

.theme-ocean::after {
    background: hsl(180, 100%, 40%);
}

.theme-sunset::before {
    background: hsl(20, 100%, 50%);
}

.theme-sunset::after {
    background: hsl(340, 100%, 50%);
}

.theme-forest::before {
    background: hsl(140, 60%, 40%);
}

.theme-forest::after {
    background: hsl(100, 60%, 35%);
}

.theme-monochrome::before {
    background: hsl(0, 0%, 70%);
}

.theme-monochrome::after {
    background: hsl(0, 0%, 50%);
}

/* Color Pickers */
.color-pickers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.color-picker-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.color-picker-item label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.color-picker-item input[type="color"] {
    width: 100%;
    height: 50px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--color-surface);
}

.color-picker-item input[type="color"]:hover {
    border-color: var(--color-primary);
    transform: scale(1.02);
}

/* Widget Manager */
.widget-manager {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.widget-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.widget-item:hover {
    background: var(--color-surface-elevated);
    border-color: var(--color-primary);
}

.widget-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.widget-info input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.widget-info label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    cursor: pointer;
}

.widget-controls {
    display: flex;
    gap: var(--space-2);
}

.widget-move-up,
.widget-move-down {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.widget-move-up:hover,
.widget-move-down:hover {
    background: var(--color-primary);
    color: var(--color-text-primary);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

/* Performance Settings */
.performance-settings {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.setting-item:hover {
    background: var(--color-surface-elevated);
}

.setting-item label {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    cursor: pointer;
}

.setting-item label span {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.setting-item label small {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 50px;
    height: 26px;
    appearance: none;
    background: var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.toggle-switch::before {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.toggle-switch:checked {
    background: var(--color-primary);
}

.toggle-switch:checked::before {
    transform: translateX(26px);
}

/* =========================================
   MODO LITE (BAJO RENDIMIENTO)
   ========================================= */
body.lite-mode * {
    /* Desactivar animaciones costosas */
    animation-duration: 0s !important;
    transition-duration: 0s !important;
}

body.lite-mode .glass-panel,
body.lite-mode .widget-card,
body.lite-mode .modal-container,
body.lite-mode .header,
body.lite-mode .search-container {
    /* Reemplazar backdrop-filter (muy costoso en GPU) con fondo sólido semi-opaco */
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: var(--color-surface) !important;
    border: 1px solid var(--color-border);
}

body.lite-mode .widget-card:hover {
    transform: none !important;
    box-shadow: none !important;
}

body.lite-mode .btn-primary,
body.lite-mode .btn-secondary,
body.lite-mode .utility-btn {
    /* Simplificar botones */
    box-shadow: none !important;
    transform: none !important;
}

body.lite-mode .search-input {
    box-shadow: none !important;
}

/* Actions */
.settings-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.settings-actions button {
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.settings-actions button:hover {
    background: var(--color-surface-elevated);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

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

.btn-export:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.btn-import:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-background);
}

/* Responsive */
@media (max-width: 768px) {
    .settings-content {
        width: 95%;
        max-height: 95vh;
    }

    .settings-header {
        padding: var(--space-4);
    }

    .settings-body {
        padding: var(--space-4);
    }

    .theme-selector {
        grid-template-columns: repeat(2, 1fr);
    }

    .color-pickers {
        grid-template-columns: 1fr;
    }

    .settings-actions {
        gap: var(--space-2);
    }
}

/* Scrollbar for settings panel */
.settings-body::-webkit-scrollbar {
    width: 8px;
}

.settings-body::-webkit-scrollbar-track {
    background: transparent;
}

.settings-body::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border-radius: var(--radius-full);
}

.settings-body::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}