.font-stacks-container {
    background: #f8fafc;
    padding: 20px 0 70px;
}
.font-stacks-container .container-fluid {
    padding-left: 20px;
    padding-right: 20px;
}
.font-stacks-header {
    text-align: center;
}
.font-stacks-header h1 {
    font-size: 42px;
    margin-bottom: 12px;
}
.font-stacks-header p {
    color: #64748b;
    font-size: 18px;
    margin: 0 auto;
    max-width: 820px;
}
.control-bar,
.preview-card,
.font-stack-card,
.seo-content-section {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, .06);
}
.control-bar {
    margin-bottom: 20px;
    padding: 16px;
}
.search-wrapper {
    position: relative;
}
.search-wrapper i {
    color: #94a3b8;
    left: 15px;
    position: absolute;
    top: 14px;
}
.search-input {
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    height: 46px;
    padding: 0 15px 0 42px;
    width: 100%;
}
.font-explorer-layout {
    display: grid;
    gap: 24px;
    grid-template-columns: minmax(0, 1fr) 430px;
}
.font-stacks-list {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
}
.font-stack-card {
    cursor: pointer;
    padding: 18px;
    transition: .2s ease;
}
.font-stack-card:hover,
.font-stack-card.active {
    border-color: #2563eb;
    transform: translateY(-2px);
}
.font-stack-card h3 {
    font-size: 22px;
    margin-bottom: 10px;
}
.font-stack-sample {
    color: #0f172a;
    font-size: 30px;
    line-height: 1.15;
    margin-bottom: 14px;
}
.font-stack-css {
    background: #f1f5f9;
    border-radius: 10px;
    color: #334155;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 12px;
    padding: 10px;
}
.preview-panel-sticky {
    position: sticky;
    top: 110px;
}
.preview-card {
    padding: 22px;
}
.preview-card-header {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin-bottom: 18px;
}
.preview-title {
    align-items: center;
    display: flex;
    font-size: 18px;
    font-weight: 700;
    gap: 10px;
}
.badge-preview {
    background: #eff6ff;
    border-radius: 999px;
    color: #2563eb;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 10px;
}
.font-preview {
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    overflow: hidden;
}
.mock-ui-header {
    align-items: center;
    background: #0f172a;
    color: #fff;
    display: flex;
    justify-content: space-between;
    padding: 16px;
}
.mock-ui-logo {
    font-weight: 800;
}
.mock-ui-nav a {
    color: #cbd5e1;
    font-size: 13px;
    margin-left: 12px;
}
.mock-ui-hero {
    background: linear-gradient(135deg, #f8fafc, #e0f2fe);
    padding: 28px;
}
.mock-ui-hero h2 {
    color: #0f172a;
    font-size: 34px;
    line-height: 1.1;
    margin-bottom: 12px;
}
.mock-ui-hero p,
.mock-ui-card p {
    color: #475569;
}
.eyebrow {
    color: #2563eb !important;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.mock-btn {
    background: #2563eb;
    border: 0;
    border-radius: 10px;
    color: #fff;
    font-weight: 700;
    margin-top: 8px;
    padding: 11px 16px;
}
.mock-ui-card {
    padding: 20px 28px;
}
.css-label {
    color: #64748b;
    font-weight: 700;
    margin-top: 18px;
}
.css-output {
    background: #0f172a;
    border: 0;
    border-radius: 12px;
    color: #e2e8f0;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    min-height: 90px;
    padding: 14px;
    resize: vertical;
    width: 100%;
}
.preview-panel-actions {
    margin-top: 14px;
}
.btn-preview-action {
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 700;
    padding: 11px 16px;
}
.btn-preview-action-primary {
    background: #2563eb;
    border-color: #2563eb;
    color: #fff;
}
.seo-content-section {
    margin-top: 30px;
    padding: 26px;
}
@media (max-width: 991px) {
    .font-explorer-layout {
        grid-template-columns: 1fr;
    }
    .preview-panel-sticky {
        position: static;
    }
}