/**
 * Nebula Theme - Components CSS
 * Design System Components using CSS Variables
 * Version: 2.0.0
 * Uses Nebula color palette: Sky Blue #0EA5E9, Dark Slate #0F172A, Amber #F59E0B
 */

/* ============================
   Announcement Bar
   ============================ */

.ds-announcement {
    padding: 10px 0;
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    border-bottom: 1px solid transparent;
}

.ds-announcement--info {
    background: var(--nebula-primary-light, #E0F2FE);
    color: var(--nebula-primary-dark, #0284C7);
    border-color: var(--nebula-primary, #0EA5E9);
}

.ds-announcement--warning {
    background: var(--nebula-warning-light, #FEF3C7);
    color: var(--nebula-warning-dark, #D97706);
    border-color: var(--nebula-warning, #F59E0B);
}

.ds-announcement--error {
    background: var(--nebula-error-light, #FEE2E2);
    color: var(--nebula-error-dark, #DC2626);
    border-color: var(--nebula-error, #EF4444);
}

.ds-announcement--success {
    background: var(--nebula-success-light, #D1FAE5);
    color: var(--nebula-success-dark, #059669);
    border-color: var(--nebula-success, #10B981);
}

/* ============================
   Featured Area (Hero + Carousel)
   ============================ */

.ds-featured-area {
    margin-bottom: 32px;
}

.ds-featured-area__inner {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: stretch;
}

/* Carousel */
.ds-featured-carousel {
    position: relative;
    border-radius: var(--nebula-radius-xl, 16px);
    overflow: hidden;
    background: var(--nebula-bg-secondary, #F8FAFC);
    box-shadow: var(--nebula-shadow-lg, 0 10px 15px rgba(0, 0, 0, 0.1));
}

.ds-featured-carousel__track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.ds-featured-carousel__slide {
    flex: 0 0 100%;
    display: block;
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.ds-featured-carousel__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--nebula-duration-slow, 0.3s) var(--nebula-ease-out);
}

.ds-featured-carousel__slide:hover .ds-featured-carousel__img {
    transform: scale(1.03);
}

/* Carousel Dots */
.ds-featured-carousel__dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.ds-featured-carousel__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all var(--nebula-duration-fast, 0.15s) var(--nebula-ease-out);
}

.ds-featured-carousel__dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.ds-featured-carousel__dot.is-active {
    background: var(--nebula-primary, #0EA5E9);
    transform: scale(1.2);
}

/* Carousel Arrows */
.ds-featured-carousel__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    color: var(--nebula-secondary, #0F172A);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--nebula-shadow-md, 0 4px 6px rgba(0, 0, 0, 0.1));
    transition: all var(--nebula-duration-fast, 0.15s) var(--nebula-ease-out);
    z-index: 10;
}

.ds-featured-carousel__arrow:hover {
    background: var(--nebula-primary, #0EA5E9);
    color: #fff;
    transform: translateY(-50%) scale(1.05);
}

.ds-featured-carousel__arrow--prev {
    left: 16px;
}

.ds-featured-carousel__arrow--next {
    right: 16px;
}

/* Featured Link Cards */
.ds-featured-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ds-featured-link-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--card-bg, var(--nebula-primary-light, #E0F2FE));
    border-radius: var(--nebula-radius-xl, 16px);
    text-decoration: none;
    transition: all var(--nebula-duration-normal, 0.2s) var(--nebula-ease-out);
    flex: 1;
    position: relative;
    overflow: hidden;
}

.ds-featured-link-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--nebula-shadow-lg, 0 10px 15px rgba(0, 0, 0, 0.1));
}

.ds-featured-link-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--nebula-radius-lg, 12px);
    background: var(--card-icon, var(--nebula-primary, #0EA5E9));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform var(--nebula-duration-normal, 0.2s) var(--nebula-ease-out);
}

.ds-featured-link-card:hover .ds-featured-link-card__icon {
    transform: scale(1.1) rotate(-5deg);
}

.ds-featured-link-card__body {
    flex: 1;
    min-width: 0;
}

.ds-featured-link-card__title {
    font-size: var(--nebula-text-lg, 1.125rem);
    font-weight: var(--nebula-font-semibold, 600);
    color: var(--nebula-secondary, #0F172A);
    margin: 0 0 4px 0;
    line-height: 1.3;
}

.ds-featured-link-card__desc {
    font-size: var(--nebula-text-sm, 0.875rem);
    color: var(--nebula-text-secondary, #64748B);
    margin: 0;
    line-height: 1.4;
}

.ds-featured-link-card__arrow {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--card-icon, var(--nebula-primary, #0EA5E9));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--nebula-duration-normal, 0.2s) var(--nebula-ease-out);
}

.ds-featured-link-card:hover .ds-featured-link-card__arrow {
    transform: translateX(4px);
}

/* ============================
   Popular Articles
   ============================ */

.ds-popular-articles {
    margin-bottom: 32px;
    background: var(--nebula-bg, #FFFFFF);
    border-radius: var(--nebula-radius-xl, 16px);
    padding: 24px;
    box-shadow: var(--nebula-shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.ds-popular-articles__header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--nebula-border, #E2E8F0);
}

.ds-popular-articles__title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--nebula-text-lg, 1.125rem);
    font-weight: var(--nebula-font-semibold, 600);
    color: var(--nebula-secondary, #0F172A);
    margin: 0;
}

.ds-popular-articles__title svg {
    color: var(--nebula-accent, #F59E0B);
}

.ds-popular-articles__badge {
    padding: 4px 10px;
    background: var(--nebula-accent, #F59E0B);
    color: #fff;
    font-size: var(--nebula-text-xs, 0.75rem);
    font-weight: var(--nebula-font-bold, 700);
    border-radius: var(--nebula-radius-full, 9999px);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ds-popular-articles__list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ds-popular-article-item {
    border-radius: var(--nebula-radius-lg, 12px);
    transition: all var(--nebula-duration-fast, 0.15s) var(--nebula-ease-out);
}

.ds-popular-article-item:hover {
    background: var(--nebula-bg-secondary, #F8FAFC);
}

.ds-popular-article-item__link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    text-decoration: none;
    border-radius: var(--nebula-radius-lg, 12px);
}

.ds-popular-article-item__rank {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--nebula-text-sm, 0.875rem);
    font-weight: var(--nebula-font-bold, 700);
    color: var(--nebula-text-secondary, #64748B);
    background: var(--nebula-bg-secondary, #F8FAFC);
    border-radius: var(--nebula-radius-md, 8px);
    flex-shrink: 0;
}

.ds-popular-article-item__rank--top1,
.ds-popular-article-item__rank--top2,
.ds-popular-article-item__rank--top3 {
    background: var(--nebula-accent, #F59E0B);
    color: #fff;
}

.ds-popular-article-item__rank--top1 {
    background: linear-gradient(135deg, #F59E0B, #D97706);
}

.ds-popular-article-item__rank--top2 {
    background: linear-gradient(135deg, #94A3B8, #64748B);
}

.ds-popular-article-item__rank--top3 {
    background: linear-gradient(135deg, #CD7F32, #A0522D);
}

.ds-popular-article-item__content {
    flex: 1;
    min-width: 0;
}

.ds-popular-article-item__title {
    font-size: var(--nebula-text-base, 1rem);
    font-weight: var(--nebula-font-medium, 500);
    color: var(--nebula-secondary, #0F172A);
    margin: 0 0 6px 0;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color var(--nebula-duration-fast, 0.15s);
}

.ds-popular-article-item:hover .ds-popular-article-item__title {
    color: var(--nebula-primary, #0EA5E9);
}

.ds-popular-article-item__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--nebula-text-xs, 0.75rem);
    color: var(--nebula-text-muted, #94A3B8);
}

.ds-popular-article-item__cat {
    padding: 2px 8px;
    background: var(--nebula-primary-light, #E0F2FE);
    color: var(--nebula-primary-dark, #0284C7);
    border-radius: var(--nebula-radius-full, 9999px);
    font-weight: var(--nebula-font-medium, 500);
}

.ds-popular-article-item__views {
    display: flex;
    align-items: center;
    gap: 4px;
}

.ds-popular-article-item__thumb {
    width: 60px;
    height: 45px;
    border-radius: var(--nebula-radius-md, 8px);
    overflow: hidden;
    flex-shrink: 0;
}

.ds-popular-article-item__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================
   Category Tabs
   ============================ */

.ds-category-tabs-wrapper {
    margin-bottom: 24px;
    background: var(--nebula-bg, #FFFFFF);
    border-radius: var(--nebula-radius-xl, 16px);
    padding: 16px 20px;
    box-shadow: var(--nebula-shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.ds-category-tabs-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.ds-category-tabs__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex: 1;
}

.ds-cat-tab {
    padding: 8px 16px;
    background: var(--nebula-bg-secondary, #F8FAFC);
    border: 1px solid transparent;
    border-radius: var(--nebula-radius-full, 9999px);
    font-size: var(--nebula-text-sm, 0.875rem);
    font-weight: var(--nebula-font-medium, 500);
    color: var(--nebula-text-secondary, #64748B);
    cursor: pointer;
    transition: all var(--nebula-duration-fast, 0.15s) var(--nebula-ease-out);
}

.ds-cat-tab:hover {
    background: var(--nebula-bg-tertiary, #F1F5F9);
    border-color: var(--nebula-border, #E2E8F0);
}

.ds-cat-tab.active {
    background: linear-gradient(135deg, var(--nebula-primary, #0EA5E9), var(--nebula-secondary, #0F172A));
    color: #fff;
    border-color: transparent;
    box-shadow: var(--nebula-shadow-md, 0 4px 6px rgba(14, 165, 233, 0.3));
}

/* ============================
   Post List & Cards
   ============================ */

.ds-post-list-area {
    background: var(--nebula-bg, #FFFFFF);
    border-radius: var(--nebula-radius-xl, 16px);
    padding: 24px;
    box-shadow: var(--nebula-shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.ds-post-list {
    display: grid;
    gap: 20px;
}

.ds-post-list--cols-1 {
    grid-template-columns: 1fr;
}

.ds-post-list--cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.ds-post-list--cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Post Card */
.ds-post-card {
    background: var(--nebula-bg, #FFFFFF);
    border-radius: var(--nebula-radius-xl, 16px);
    overflow: hidden;
    border: 1px solid var(--nebula-border, #E2E8F0);
    transition: all var(--nebula-duration-normal, 0.2s) var(--nebula-ease-out);
}

.ds-post-card:hover {
    border-color: var(--nebula-primary, #0EA5E9);
    box-shadow: var(--nebula-shadow-lg, 0 10px 15px rgba(0, 0, 0, 0.1));
    transform: translateY(-2px);
}

.ds-post-card__image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.ds-post-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--nebula-duration-slow, 0.3s) var(--nebula-ease-out);
}

.ds-post-card:hover .ds-post-card__image img {
    transform: scale(1.05);
}

.ds-post-card__category {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    background: var(--nebula-primary, #0EA5E9);
    color: #fff;
    font-size: var(--nebula-text-xs, 0.75rem);
    font-weight: var(--nebula-font-semibold, 600);
    border-radius: var(--nebula-radius-full, 9999px);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ds-post-card__body {
    padding: 20px;
}

.ds-post-card__title {
    font-size: var(--nebula-text-lg, 1.125rem);
    font-weight: var(--nebula-font-semibold, 600);
    color: var(--nebula-secondary, #0F172A);
    margin: 0 0 12px 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ds-post-card:hover .ds-post-card__title {
    color: var(--nebula-primary, #0EA5E9);
}

.ds-post-card__excerpt {
    font-size: var(--nebula-text-sm, 0.875rem);
    color: var(--nebula-text-secondary, #64748B);
    line-height: 1.6;
    margin: 0 0 16px 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ds-post-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--nebula-border-light, #F1F5F9);
}

.ds-post-card__meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: var(--nebula-text-xs, 0.75rem);
    color: var(--nebula-text-muted, #94A3B8);
}

.ds-post-card__date,
.ds-post-card__views {
    display: flex;
    align-items: center;
    gap: 4px;
}

.ds-post-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.ds-post-card__tag {
    padding: 3px 8px;
    background: var(--nebula-bg-secondary, #F8FAFC);
    color: var(--nebula-text-secondary, #64748B);
    font-size: var(--nebula-text-xs, 0.75rem);
    border-radius: var(--nebula-radius-full, 9999px);
    transition: all var(--nebula-duration-fast, 0.15s);
}

.ds-post-card__tag:hover {
    background: var(--nebula-primary-light, #E0F2FE);
    color: var(--nebula-primary, #0EA5E9);
}

/* ============================
   Load More
   ============================ */

.ds-load-more {
    text-align: center;
    padding: 24px;
    color: var(--nebula-text-secondary, #64748B);
    cursor: pointer;
    font-weight: var(--nebula-font-medium, 500);
    transition: color var(--nebula-duration-fast, 0.15s);
}

.ds-load-more:hover {
    color: var(--nebula-primary, #0EA5E9);
}

.ds-load-more.is-loading {
    pointer-events: none;
    opacity: 0.6;
}

/* ============================
   Sidebar Widgets
   ============================ */

.ds-sidebar-widget {
    background: var(--nebula-bg, #FFFFFF);
    border-radius: var(--nebula-radius-xl, 16px);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--nebula-shadow-sm, 0 1px 2px rgba(0, 0, 0, 0.05));
}

.ds-sidebar-widget__title {
    font-size: var(--nebula-text-base, 1rem);
    font-weight: var(--nebula-font-semibold, 600);
    color: var(--nebula-secondary, #0F172A);
    margin: 0 0 16px 0;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--nebula-primary, #0EA5E9);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ds-sidebar-widget__title svg {
    color: var(--nebula-primary, #0EA5E9);
}

/* ============================
   No Results
   ============================ */

.ds-no-results {
    text-align: center;
    padding: 60px 20px;
}

.ds-no-results h2 {
    font-size: var(--nebula-text-2xl, 1.5rem);
    color: var(--nebula-secondary, #0F172A);
    margin-bottom: 12px;
}

.ds-no-results p {
    color: var(--nebula-text-secondary, #64748B);
}

/* ============================
   Responsive
   ============================ */

@media (max-width: 992px) {
    .ds-featured-area__inner {
        grid-template-columns: 1fr;
    }

    .ds-featured-links {
        flex-direction: row;
    }

    .ds-featured-link-card {
        flex-direction: column;
        text-align: center;
    }

    .ds-featured-link-card__arrow {
        display: none;
    }
}

@media (max-width: 768px) {
    .ds-featured-links {
        flex-direction: column;
    }

    .ds-post-list--cols-2,
    .ds-post-list--cols-3 {
        grid-template-columns: 1fr;
    }

    .ds-popular-articles__list {
        gap: 8px;
    }

    .ds-popular-article-item__thumb {
        display: none;
    }
}

/* ============================
   Dark Mode
   ============================ */

[data-theme="dark"] .ds-featured-carousel,
[data-theme="dark"] .ds-category-tabs-wrapper,
[data-theme="dark"] .ds-post-list-area,
[data-theme="dark"] .ds-popular-articles,
[data-theme="dark"] .ds-post-card,
[data-theme="dark"] .ds-sidebar-widget {
    background: var(--nebula-bg-secondary, #1E293B);
    border-color: var(--nebula-border, #334155);
}

[data-theme="dark"] .ds-cat-tab {
    background: var(--nebula-bg-tertiary, #334155);
    color: var(--nebula-text-secondary, #94A3B8);
}

[data-theme="dark"] .ds-cat-tab:hover {
    background: var(--nebula-bg-secondary, #1E293B);
}

[data-theme="dark"] .ds-popular-article-item__rank {
    background: var(--nebula-bg-tertiary, #334155);
    color: var(--nebula-text-secondary, #94A3B8);
}

[data-theme="dark"] .ds-popular-article-item:hover {
    background: var(--nebula-bg-tertiary, #334155);
}