/* Grayscale Theme Switcher Styles */

/* Theme Classes */
html.gts-grayscale {
    filter: grayscale(100%);
    -webkit-filter: grayscale(100%);
    transition: filter 0.5s ease;
}

html.gts-sepia {
    filter: sepia(100%);
    -webkit-filter: sepia(100%);
    transition: filter 0.5s ease;
}

html.gts-dark {
    filter: invert(100%) hue-rotate(180deg);
    -webkit-filter: invert(100%) hue-rotate(180deg);
    background: #111 !important;
    transition: filter 0.5s ease;
}

html.gts-dark img,
html.gts-dark video,
html.gts-dark iframe,
html.gts-dark embed,
html.gts-dark object {
    filter: invert(100%) hue-rotate(180deg);
    -webkit-filter: invert(100%) hue-rotate(180deg);
}

html.gts-high-contrast {
    filter: contrast(150%);
    -webkit-filter: contrast(150%);
    transition: filter 0.5s ease;
}

/* Theme Switcher Button */
#gts-theme-switcher {
    position: fixed;
    z-index: 999999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

#gts-theme-switcher.gts-position-bottom-right {
    bottom: 20px;
    right: 20px;
}

#gts-theme-switcher.gts-position-bottom-left {
    bottom: 20px;
    left: 20px;
}

#gts-theme-switcher.gts-position-top-right {
    top: 20px;
    right: 20px;
}

#gts-theme-switcher.gts-position-top-left {
    top: 20px;
    left: 20px;
}

#gts-toggle-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
}

#gts-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

#gts-toggle-btn .gts-icon {
    font-size: 24px;
    display: inline-block;
    animation: rotate 20s linear infinite;
}

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

/* Theme Menu */
#gts-theme-menu {
    position: absolute;
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    min-width: 280px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

#gts-theme-menu:not(.gts-hidden) {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.gts-position-bottom-right #gts-theme-menu,
.gts-position-top-right #gts-theme-menu {
    right: 0;
}

.gts-position-bottom-left #gts-theme-menu,
.gts-position-top-left #gts-theme-menu {
    left: 0;
}

.gts-position-bottom-right #gts-theme-menu,
.gts-position-bottom-left #gts-theme-menu {
    bottom: 60px;
}

.gts-position-top-right #gts-theme-menu,
.gts-position-top-left #gts-theme-menu {
    top: 60px;
}

#gts-theme-menu h3 {
    margin: 0 0 15px 0;
    font-size: 16px;
    font-weight: 600;
    color: #333;
    text-align: center;
}

/* Theme Options */
.gts-theme-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 15px;
}

.gts-theme-option {
    background: #f5f5f5;
    border: 2px solid transparent;
    border-radius: 8px;
    padding: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #333;
}

.gts-theme-option:hover {
    background: #e8e8e8;
    transform: translateY(-2px);
}

.gts-theme-option.active {
    border-color: #667eea;
    background: #f0f4ff;
}

.gts-preview {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    display: block;
}

.gts-preview.grayscale {
    filter: grayscale(100%);
}

.gts-preview.sepia {
    filter: sepia(100%);
}

.gts-preview.dark {
    filter: invert(100%) hue-rotate(180deg);
}

.gts-preview.contrast {
    filter: contrast(200%);
}

/* Intensity Control */
.gts-intensity-control {
    padding-top: 15px;
    border-top: 1px solid #e0e0e0;
}

.gts-intensity-control label {
    display: block;
    margin-bottom: 10px;
    font-size: 14px;
    color: #555;
    font-weight: 500;
}

#gts-intensity-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #ddd;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

#gts-intensity-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    transition: background 0.3s ease;
}

#gts-intensity-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    border: none;
    transition: background 0.3s ease;
}

#gts-intensity-slider:hover::-webkit-slider-thumb {
    background: #764ba2;
}

#gts-intensity-slider:hover::-moz-range-thumb {
    background: #764ba2;
}

/* Utility Classes */
.gts-hidden {
    display: none !important;
}

/* Disabled State */
.gts-theme-option:disabled,
.gts-theme-option[disabled] {
    opacity: 0.5;
    cursor: not-allowed !important;
    pointer-events: none;
}

#gts-intensity-slider:disabled,
#gts-intensity-slider[disabled] {
    opacity: 0.5;
    cursor: not-allowed !important;
}

.gts-force-override-notice {
    background: #fff3cd;
    color: #856404;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    font-size: 12px;
    text-align: center;
    border: 1px solid #ffebd1;
}

/* Accessibility */
#gts-toggle-btn:focus {
    outline: 3px solid #667eea;
    outline-offset: 2px;
}

.gts-theme-option:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

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

.gts-fade-in {
    animation: slideIn 0.3s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    #gts-theme-menu {
        min-width: 250px;
    }
    
    .gts-theme-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    #gts-toggle-btn {
        width: 45px;
        height: 45px;
    }
    
    #gts-toggle-btn .gts-icon {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    #gts-theme-switcher.gts-position-bottom-right,
    #gts-theme-switcher.gts-position-bottom-left {
        bottom: 10px;
    }
    
    #gts-theme-switcher.gts-position-bottom-right,
    #gts-theme-switcher.gts-position-top-right {
        right: 10px;
    }
    
    #gts-theme-switcher.gts-position-bottom-left,
    #gts-theme-switcher.gts-position-top-left {
        left: 10px;
    }
    
    #gts-theme-menu {
        position: fixed;
        left: 10px !important;
        right: 10px !important;
        width: auto !important;
        min-width: auto !important;
    }
}

/* Print Styles */
@media print {
    #gts-theme-switcher {
        display: none !important;
    }
    
    html.gts-grayscale,
    html.gts-sepia,
    html.gts-dark,
    html.gts-high-contrast {
        filter: none !important;
        -webkit-filter: none !important;
    }
}

/* Dark Mode Support for Menu */
@media (prefers-color-scheme: dark) {
    #gts-theme-menu {
        background: #2a2a2a;
        color: #f0f0f0;
    }
    
    #gts-theme-menu h3 {
        color: #f0f0f0;
    }
    
    .gts-theme-option {
        background: #3a3a3a;
        color: #f0f0f0;
    }
    
    .gts-theme-option:hover {
        background: #4a4a4a;
    }
    
    .gts-theme-option.active {
        background: #3a4a6a;
    }
    
    .gts-intensity-control {
        border-top-color: #444;
    }
    
    .gts-intensity-control label {
        color: #ccc;
    }
    
    #gts-intensity-slider {
        background: #444;
    }
}