:root {
    transition:
        background-color var(--tr-med),
        color var(--tr-med),
        border-color var(--tr-med),
        box-shadow var(--tr-med),
        fill var(--tr-med),
        stroke var(--tr-med);
}

*, *::before, *::after {
    transition:
        background-color var(--tr-med),
        color var(--tr-med),
        border-color var(--tr-med),
        box-shadow var(--tr-med),
        fill var(--tr-med),
        stroke var(--tr-med);
}

.theme-btn {
    position: relative;
}
.theme-btn i {
    font-size: var(--fs-4xl);
    color: var(--c-text);
    display: block;
}
.theme-btn .icon-sun { display: none; }
.theme-btn .icon-moon { display: block; }
[data-theme="dark"] .theme-btn .icon-sun { display: block; }
[data-theme="dark"] .theme-btn .icon-moon { display: none; }

.topbar .theme-btn i,
.mobile-header__actions .theme-btn i {
    color: var(--c-primary);
}

.skin-section {
    margin-bottom: var(--s-gap-md);
}
.skin-section:last-child {
    margin-bottom: 0;
}
.skin-section__title {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px 6px;
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--c-text-2);
    letter-spacing: 0.5px;
}
.skin-section__title i {
    font-size: var(--fs-xl);
    color: var(--c-primary);
}

.skin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    padding: 6px 20px 16px;
}
.skin-grid--image {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}
.skin-grid--decor {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.skin-grid--decor .skin-card__preview--image {
    aspect-ratio: 1 / 1;
}

.skin-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 10px 8px;
    border-radius: var(--s-radius-md);
    cursor: pointer;
    transition: all var(--tr-fast);
    border: 2px solid transparent;
    background: transparent;
}
.skin-card:hover {
    transform: translateY(-3px) scale(1.02);
    background: var(--c-surface-2);
}
.skin-card.is-active {
    border-color: var(--skin-color, var(--c-primary));
    background: color-mix(in srgb, var(--skin-color, var(--c-primary)) 12%, var(--c-surface-2));
    box-shadow: 0 4px 16px color-mix(in srgb, var(--skin-color, var(--c-primary)) 25%, transparent);
}
.skin-card.is-active .skin-card__preview {
    box-shadow: 0 4px 12px color-mix(in srgb, var(--skin-color, var(--c-primary)) 35%, transparent);
}
.skin-card--tall {
    padding: 8px;
}

.skin-card__preview {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--s-radius-md);
    overflow: hidden;
    background: var(--c-surface-2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    flex-shrink: 0;
}

.skin-card__preview--solid {
    background: var(--skin-color, var(--c-primary));
}
.skin-card__gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--skin-color, var(--c-primary)) 0%, var(--skin-color-2, var(--c-primary-2)) 100%);
}
.skin-card__preview--image {
    background-size: cover;
    background-position: top center;
    background-repeat: no-repeat;
    aspect-ratio: 3 / 4;
    border-radius: var(--s-radius-md);
}
.skin-card__gradient-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
    pointer-events: none;
}
.skin-card__info {
    position: absolute;
    bottom: 8px;
    left: 10px;
    right: 10px;
    font-size: var(--fs-md);
    font-weight: 500;
    color: #fff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.skin-card__check {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--skin-color, var(--c-primary));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--tr-fast);
    font-size: var(--fs-md);
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
.skin-card.is-active .skin-card__check {
    opacity: 1;
    transform: scale(1);
}
.skin-card__preview--solid .skin-card__check {
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.skin-card__preview--solid.is-active .skin-card__check {
    background: rgba(255,255,255,0.3);
}

.skin-card__name {
    font-size: var(--fs-md);
    color: var(--c-text);
    font-weight: 500;
    text-align: center;
    line-height: 1.3;
}

.btn--icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--c-text);
    transition: background var(--tr-fast);
}
.btn--icon:hover {
    background: var(--c-surface-2);
}
.btn--icon i {
    font-size: var(--fs-4xl);
}

@media (max-width: 480px) {
    .skin-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 10px;
        padding: 4px 16px 12px;
    }
    .skin-grid--image {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    }
    .skin-section__title {
        padding: 6px 16px 4px;
        font-size: var(--fs-md);
    }
    .skin-card {
        padding: 8px 4px;
        gap: 6px;
    }
    .skin-card:hover {
        transform: none;
    }
    .skin-card__name {
        font-size: var(--fs-sm);
    }
    .skin-card__check {
        width: 18px;
        height: 18px;
        font-size: var(--fs-xs);
    }
}