/* ===== Page Banner - Case ===== */
.page-banner {
    position: relative;
    height: 200px;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 64px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.page-banner-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 70% 40%, rgba(37, 99, 235, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 20% 80%, rgba(37, 99, 235, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.page-banner-wrap {
    position: relative;
    z-index: 2;
    width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.page-banner-content {
    animation: fadeInUp 0.8s ease-out;
    text-align: left;
}

.page-banner-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.page-banner-desc {
    font-size: var(--text-base);
    color: var(--text-secondary);
    max-width: 560px;
}

.banner-case {
    background: #53A1F2 url('../images/banner-case.png') no-repeat center center ;
}

/* ===== Case Content Section ===== */
.case-content-section {
    padding: 40px 0 80px;
    background: #F8FAFC;
}

.case-layout {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

/* ===== Full Width Layout ===== */
.case-layout-full {
    width: 100%;
}

/* ===== Left Sidebar Filter (Hidden) ===== */
.case-filter-sidebar {
    display: none;
}

.case-filter-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.case-filter-option {
    display: block;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: var(--text-sm);
    color: #475569;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.case-filter-option:hover {
    background: #F1F5F9;
    color: #2563EB;
}

.case-filter-option.active {
    background: #EFF6FF;
    color: #2563EB;
    font-weight: 500;
}

/* ===== Right Content Area ===== */
.case-list-area {
    flex: 1;
    min-width: 0;
}

/* ===== Featured Case ===== */
.case-featured {
    display: flex;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    margin-bottom: 24px;
    text-decoration: none;
}

.case-featured-img {
    position: relative;
    width: 32%;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
    overflow: hidden;
    flex-shrink: 0;
}

.case-featured-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    inset: 0;
}

.case-featured-tags {
    position: absolute;
    bottom: 16px;
    left: 16px;
    display: flex;
    gap: 8px;
}

.case-tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: var(--text-xs);
    font-weight: 500;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    backdrop-filter: blur(4px);
}

.case-featured-body {
    flex: 1;
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.case-featured-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: #1E293B;
    line-height: 1.4;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-featured-desc {
    font-size: var(--text-sm);
    color: #64748B;
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-featured-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.case-keyword {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: var(--text-xs);
    font-weight: 500;
    background: #EFF6FF;
    color: #2563EB;
}

/* ===== Case Grid ===== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

/* ===== Case Filter Bar ===== */
.case-filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 16px 24px;
    background: #fff;
    border-radius: 12px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.case-filter-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.case-filter-tab {
    padding: 8px 20px;
    border-radius: 20px;
    font-size: var(--text-sm);
    color: #64748B;
    background: #F1F5F9;
    text-decoration: none;
    transition: all 0.3s ease;
}

.case-filter-tab:hover {
    background: #E0F2FE;
    color: #2563EB;
}

.case-filter-tab.active {
    background: #2563EB;
    color: #fff;
}

/* ===== Case List Grid ===== */
.case-list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.case-card {
    display: block;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    color: inherit;
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    color: inherit;
}

.case-card-img {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, #E0E7FF 0%, #C7D2FE 100%);
}

.case-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-card-tags {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    gap: 6px;
}

.case-card-tags .case-tag {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(4px);
}

.case-card-body {
    padding: 20px;
}

.case-card-title {
    font-size: var(--text-base);
    font-weight: 700;
    color: #1E293B;
    line-height: 1.4;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-card-desc {
    font-size: var(--text-sm);
    color: #64748B;
    line-height: 1.6;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-card-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* ===== Horizontal Filter (New Style) ===== */
.case-filter-horizontal {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 24px 32px;
    margin-bottom: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.case-filter-row {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.case-filter-row:first-child {
    padding-top: 0;
}

.case-filter-row:last-child {
    padding-bottom: 0;
    border-bottom: none;
}

.case-filter-row-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    min-width: 70px;
    flex-shrink: 0;
}

.case-filter-row-options {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.case-filter-row-option {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border-radius: 4px;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    background: transparent;
    font-family: inherit;
}

.case-filter-row-option:hover {
    color: var(--primary);
    background: var(--bg-gray);
}

.case-filter-row-option.active {
    color: var(--primary);
    font-weight: 500;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    .case-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .case-layout {
        flex-direction: column;
    }

    .case-filter-sidebar {
        width: 100%;
    }

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

    .case-featured {
        flex-direction: column;
    }

    .case-featured-img {
        width: 100%;
        min-height: 240px;
    }

    .case-featured-body {
        padding: 24px;
    }
}

@media (max-width: 640px) {
    .case-grid {
        grid-template-columns: 1fr;
    }
}