/**
 * Header Theme Picker Styles
 * Dropdown theme selector styling
 */

.theme-picker-dropdown {
    position: relative;
    display: inline-block;
}

.theme-picker-btn,
.shader-toggle-btn {
    cursor: pointer;
    user-select: none;
    transition: opacity 0.25s ease, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.shader-toggle-btn:hover {
    transform: scale(1.1);
    opacity: 0.9;
}

.shader-toggle-btn:active {
    transform: scale(0.95);
}

#themeToggle {
    transition: all 0.25s ease;
}

.theme-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 260px;
    max-height: 500px;
    overflow-y: auto;
    background: rgba(var(--color-bg-card-rgb, 26, 31, 58), 0.98);
    backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(var(--color-border-primary-rgb, 42, 47, 74), 0.8);
    border-radius: 12px;
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(var(--color-primary-rgb, 139, 127, 255), 0.15);
    z-index: 10000;
    padding: 0.75rem 0;
    animation: dropdownFadeIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.theme-category {
    padding: 0.5rem 0;
}

.theme-category + .theme-category {
    border-top: 1px solid rgba(var(--color-border-primary-rgb, 42, 47, 74), 0.6);
    margin-top: 0.5rem;
    padding-top: 0.75rem;
}

.theme-category-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted, #6c757d);
    padding: 0.25rem 1rem 0.5rem;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    width: 100%;
    padding: 0.8rem 1rem;
    background: none;
    border: none;
    color: var(--color-text-primary, #f8f9fa);
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
    text-align: left;
    font-size: 0.95rem;
    margin: 0 0.25rem;
    border-radius: 8px;
}

.theme-option:hover {
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.12);
}

.theme-option.active {
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.25);
    color: var(--color-primary, #8b7fff);
    font-weight: 500;
}

.theme-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    width: 1.5rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-name {
    flex: 1;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.theme-features {
    color: var(--color-accent, #ffd93d);
    font-size: 0.75rem;
    margin-left: auto;
    opacity: 0.8;
    font-weight: 600;
    min-width: 1.25rem;
    text-align: center;
}

.theme-check {
    color: var(--color-primary, #8b7fff);
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-left: 0.5rem;
    animation: checkSlideIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes checkSlideIn {
    from {
        opacity: 0;
        transform: translateX(-4px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scrollbar styling for dropdown */
.theme-dropdown::-webkit-scrollbar {
    width: 8px;
}

.theme-dropdown::-webkit-scrollbar-track {
    background: rgba(var(--color-bg-secondary-rgb, 21, 26, 53), 0.5);
    border-radius: 8px;
}

.theme-dropdown::-webkit-scrollbar-thumb {
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.5);
    border-radius: 8px;
}

.theme-dropdown::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.7);
}

/* Theme transition animation */
body.theme-transitioning,
body.theme-transitioning * {
    transition:
        background-color 0.35s cubic-bezier(0.4, 0.0, 0.2, 1),
        color 0.35s cubic-bezier(0.4, 0.0, 0.2, 1),
        border-color 0.35s cubic-bezier(0.4, 0.0, 0.2, 1),
        box-shadow 0.35s cubic-bezier(0.4, 0.0, 0.2, 1) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .theme-dropdown {
        min-width: 240px;
        right: -5px;
    }

    .theme-option {
        padding: 0.7rem 0.9rem;
        font-size: 0.93rem;
        gap: 0.8rem;
    }

    .theme-category-label {
        font-size: 0.72rem;
    }
}

@media (max-width: 480px) {
    .theme-dropdown {
        min-width: 180px;
        max-height: 400px;
    }

    .theme-option {
        padding: 0.6rem 0.75rem;
        gap: 0.5rem;
    }

    .theme-icon {
        font-size: 1.1rem;
        width: 1.25rem;
    }
}

/* Accessibility */
.theme-option:focus-visible {
    outline: 2px solid var(--color-primary, #8b7fff);
    outline-offset: -2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .theme-dropdown {
        border-width: 2px;
    }

    .theme-category {
        border-top-width: 2px;
    }

    .theme-option.active {
        font-weight: 700;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .theme-dropdown {
        animation: none;
    }

    .theme-option,
    .theme-check,
    body.theme-transitioning,
    body.theme-transitioning * {
        transition: none !important;
        animation: none !important;
    }

    #themeToggle {
        transition: none !important;
    }
}