/* =============================================
   DIKLAT CATALOG PAGE - PREMIUM LAYOUT STYLESHEET
   (Menyelaraskan dengan news_list.css)
   ============================================= */

:root {
    --dk-primary: #0d4d9e;
    --dk-primary-dark: #0a3b7a;
    --dk-navy: #0a1e3d;
    --dk-accent: #00aeae;
    --dk-text: #2d3436;
    --dk-muted: #5b6b85;
    --dk-light-bg: #f4f7fb;
    --dk-border: #dde4ef;
    --dk-white: #ffffff;
    --dk-shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.06);
    --dk-shadow-md: 0 8px 30px rgba(10, 40, 90, 0.08);
    --dk-shadow-hover: 0 16px 40px rgba(13, 77, 158, 0.14);
    --dk-radius: 14px;
    --dk-radius-sm: 8px;
    --dk-ease: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --dk-gradient: linear-gradient(135deg, #0d4d9e 0%, #0a3b7a 100%);
}

.dk-section {
    padding: 70px 0 80px;
    background-color: var(--dk-light-bg);
}

.dk-hero {
    text-align: center;
    margin-bottom: 36px;
}

.dk-eyebrow {
    font-size: 13px;
    font-weight: 700;
    color: var(--dk-primary);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.dk-hero-title {
    margin: 0 0 8px;
    font-size: 32px;
    font-weight: 800;
    color: var(--dk-navy);
}

.dk-hero-sub {
    margin: 0;
    color: var(--dk-muted);
    font-size: 15px;
}

.dk-layout {
    display: flex;
    align-items: flex-start;
    gap: 35px;
}

.dk-main {
    flex: 1;
    min-width: 0;
}

.dk-sidebar {
    flex: 0 0 320px;
    width: 320px;
}

.dk-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--dk-white);
    padding: 20px 26px;
    border-radius: 18px;
    box-shadow: var(--dk-shadow-md);
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 18px;
}

/* Category Pill Tabs */
.dk-tabs {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.dk-tabs li a {
    display: inline-block;
    padding: 12px 22px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 14px;
    color: var(--dk-text);
    background-color: #f1f4f9;
    border: none;
    transition: var(--dk-ease);
    text-decoration: none;
}

.dk-tabs li a:hover {
    color: var(--dk-primary);
    background-color: var(--dk-light-bg);
}

.dk-tabs li.active a {
    color: var(--dk-white);
    background: var(--dk-gradient);
    box-shadow: 0 6px 16px rgba(13, 77, 158, 0.3);
}

/* Search Form */
.dk-search-form {
    flex: 1;
    min-width: 260px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: #f5f7fb;
    border-radius: 999px;
    padding: 6px 6px 6px 20px;
    border: 1px solid var(--dk-border);
}

.dk-search-form input[type="text"] {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 14px;
    color: var(--dk-text);
    font-family: inherit;
}

.dk-search-btn {
    width: 40px;
    height: 40px;
    flex: none;
    border: none;
    border-radius: 50%;
    background: var(--dk-gradient);
    color: var(--dk-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Sidebar Filters */
.dk-sidebar-filter {
    background: var(--dk-white);
    border-radius: 16px;
    box-shadow: var(--dk-shadow-sm);
    padding: 26px;
    margin-bottom: 30px;
    position: sticky;
    top: 96px;
}

.dk-sidebar-filter h3 {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 800;
    color: var(--dk-navy);
}

.dk-filter-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 14.5px;
}

.dk-filter-list a {
    color: var(--dk-muted);
    font-weight: 500;
    text-decoration: none;
}

.dk-filter-list a:hover {
    color: var(--dk-primary);
}

.dk-filter-list a.active {
    color: var(--dk-primary);
    font-weight: 700;
}

.dk-filter-divider {
    height: 1px;
    background: var(--dk-border);
    margin: 22px 0;
}

/* Grid & Cards */
.dk-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 1199px) {
    .dk-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575px) {
    .dk-grid {
        grid-template-columns: 1fr;
    }
    .dk-controls {
        flex-direction: column;
        align-items: stretch;
    }
    .dk-search-form {
        min-width: 100%;
    }
}

.dk-card {
    background: var(--dk-white);
    border-radius: 22px;
    overflow: hidden;
    box-shadow: var(--dk-shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
}

.dk-card:hover {
    transform: translateY(-6px) rotate(-0.3deg);
    box-shadow: var(--dk-shadow-hover);
}

.col-md-6:nth-child(even) .dk-card:hover,
.col-lg-4:nth-child(3n+2) .dk-card:hover {
    transform: translateY(-6px) rotate(0.3deg);
}

.dk-card-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: #d9e4f0;
}

.dk-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.dk-card:hover .dk-card-img img {
    transform: scale(1.07);
}

.dk-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    color: var(--dk-white);
    background: var(--dk-gradient);
}

.dk-badge-free {
    background: #1fb35b;
    box-shadow: 0 4px 10px rgba(31, 179, 91, 0.35);
}

.dk-badge-paid {
    background: linear-gradient(135deg, #f39c12 0%, #d35400 100%);
}

.dk-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.dk-card-meta {
    font-size: 0.78rem;
    color: var(--dk-muted);
    margin-bottom: 10px;
    display: flex;
    gap: 12px;
}

.dk-card-title {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--dk-text);
    margin: 0 0 10px;
    text-decoration: none;
}

.dk-card-title:hover {
    color: var(--dk-primary);
}

.dk-price {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--dk-primary);
    margin-top: auto;
    padding-bottom: 12px;
}

.dk-btn {
    display: block;
    text-align: center;
    padding: 12px 18px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 13.5px;
    text-decoration: none;
    transition: var(--dk-ease);
}

.dk-btn-primary {
    background: var(--dk-gradient);
    color: var(--dk-white);
    box-shadow: 0 8px 18px rgba(13, 77, 158, 0.25);
}

.dk-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(13, 77, 158, 0.35);
}