/* ==========================================================
   Dark Blog Showcase — style.css
   Matches the dark card layout from the reference design
   ========================================================== */

/* ---- Variables ---- */
.dbs-wrapper {
    --dbs-bg:          #0d1117;
    --dbs-card-bg:     #161b22;
    --dbs-card-inner:  #1c2333;
    --dbs-border:      rgba(255,255,255,0.07);
    --dbs-accent:      #4da6ff;
    --dbs-accent-2:    #58a6ff;
    --dbs-text:        #c9d1d9;
    --dbs-text-muted:  #8b949e;
    --dbs-badge-bg:    rgba(77,166,255,0.15);
    --dbs-badge-color: #4da6ff;
    --dbs-filter-active-bg: #21262d;
    --dbs-radius:      14px;
    --dbs-radius-sm:   8px;
    --dbs-shadow:      0 4px 32px rgba(0,0,0,0.45);
    --dbs-transition:  .3s cubic-bezier(.4,0,.2,1);

    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: transparent;
    color: var(--dbs-text);
    padding: 0;
    box-sizing: border-box;
}

.dbs-wrapper *,
.dbs-wrapper *::before,
.dbs-wrapper *::after {
    box-sizing: inherit;
}

/* ---- Filter Tab Bar ---- */
.dbs-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 14px 18px;
    background: var(--dbs-card-bg);
    border: 1px solid var(--dbs-border);
    border-radius: var(--dbs-radius);
    margin-bottom: 36px;
}

.dbs-filter-btn {
    background: transparent;
    border: none;
    color: var(--dbs-text-muted);
    font-size: 14px;
    font-weight: 500;
    padding: 7px 16px;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--dbs-transition);
    line-height: 1;
    font-family: inherit;
}

.dbs-filter-btn:hover {
    color: var(--dbs-text);
    background: var(--dbs-filter-active-bg);
}

.dbs-filter-btn.active {
    background: #21262d;
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1);
}

/* ---- Grid ---- */
.dbs-grid {
    display: grid;
    gap: 28px;
}

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

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

/* ---- Card ---- */
.dbs-card {
    background: var(--dbs-card-bg);
    border: 1px solid var(--dbs-border);
    border-radius: var(--dbs-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--dbs-shadow);
    transition: transform var(--dbs-transition), box-shadow var(--dbs-transition), border-color var(--dbs-transition);
}

.dbs-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 48px rgba(0,0,0,0.55);
    border-color: rgba(77,166,255,0.2);
}

/* Hidden by filter JS */
.dbs-card.dbs-hidden {
    display: none;
}

/* ---- Card Image ---- */
.dbs-card-image-link {
    display: block;
    text-decoration: none;
}

.dbs-card-image {
    position: relative;
    height: 200px;
    background-color: var(--dbs-card-inner);
    background-size: cover;
    background-position: center;
    border-radius: var(--dbs-radius-sm) var(--dbs-radius-sm) 0 0;
    overflow: hidden;
}

.dbs-card-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(13,17,23,0.1) 0%,
        rgba(13,17,23,0.75) 100%
    );
    transition: opacity var(--dbs-transition);
}

.dbs-card:hover .dbs-card-image-overlay {
    opacity: 0.85;
}

/* Title floating on image — hidden */
.dbs-card-title-overlay {
    display: none;
}

/* ---- Card Body ---- */
.dbs-card-body {
    padding: 18px 20px 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

/* ---- Meta row ---- */
.dbs-card-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.dbs-badge {
    background: var(--dbs-badge-bg);
    color: var(--dbs-badge-color);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    letter-spacing: .3px;
}

.dbs-meta-date,
.dbs-meta-read {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--dbs-text-muted);
    font-size: 13px;
}

.dbs-meta-date svg {
    flex-shrink: 0;
    opacity: .7;
}

/* ---- Card Title ---- */
.dbs-card-title {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.35;
    color: #e6edf3;
}

.dbs-card-title a {
    color: inherit;
    text-decoration: none !important;
    transition: color var(--dbs-transition);
}

.dbs-card-title a:hover {
    color: var(--dbs-accent);
}

/* ---- Excerpt ---- */
.dbs-card-excerpt {
    margin: 0;
    font-size: 14px;
    color: var(--dbs-text-muted);
    line-height: 1.6;
}

/* ---- Read More ---- */
.dbs-read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--dbs-accent);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    margin-top: 4px;
    transition: gap var(--dbs-transition), color var(--dbs-transition);
    width: fit-content;
}

.dbs-read-more:hover {
    gap: 10px;
    color: #79bbff;
}

.dbs-read-more svg {
    flex-shrink: 0;
    transition: transform var(--dbs-transition);
}

.dbs-read-more:hover svg {
    transform: translateX(3px);
}

/* ---- No Posts ---- */
.dbs-no-posts {
    grid-column: 1/-1;
    text-align: center;
    color: var(--dbs-text-muted);
    padding: 60px 20px;
    font-size: 16px;
}

/* ---- Filter animation ---- */
@keyframes dbs-fadein {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.dbs-card.dbs-visible {
    animation: dbs-fadein .35s ease forwards;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .dbs-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .dbs-cols-3,
    .dbs-cols-2 {
        grid-template-columns: 1fr;
    }

    .dbs-filter {
        padding: 10px 12px;
    }

    .dbs-filter-btn {
        font-size: 13px;
        padding: 6px 12px;
    }

    .dbs-card-image {
        height: 180px;
    }
}