/* ==========================================================================
   Dyson Vacuum Cleaners - Modern Clean White / Light Theme
   Model Code (SV-Code) Dedicated Column Separation & Classification
   ========================================================================== */

:root {
    --bg-main: #f8f9fa;
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --bg-surface: #f1f3f5;
    --bg-input: #ffffff;
    
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --text-muted: #888888;
    
    /* Dyson Signature Accents */
    --accent-purple: #7928ca;
    --accent-purple-light: #9038e8;
    --accent-magenta: #e0245e;
    --accent-gold: #c68a18;
    --accent-blue: #0969da;
    
    --border-subtle: #e5e7eb;
    --border-active: #d1d5db;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    
    --font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --shadow-soft: 0 4px 14px rgba(0, 0, 0, 0.05);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.08);
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================================================
   Header & Top Search Centered
   ========================================================================== */
.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-soft);
}

.nav-container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    height: 70px;
    gap: 16px;
}

.header-right-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

.header-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 6px 11px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    background: #ffffff;
    transition: all 0.2s ease;
    white-space: nowrap;
    text-decoration: none;
}

.header-nav-btn:hover {
    color: var(--primary);
    border-color: #cbd5e1;
    background: #f8fafc;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #111;
}

.brand-logo .dyson-badge {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-magenta));
    color: #fff;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.header-center-search {
    display: flex;
    justify-content: center;
    width: 100%;
}

.top-search-form {
    display: flex;
    align-items: center;
    background: #f1f3f5;
    border: 1.5px solid transparent;
    border-radius: 999px;
    padding: 6px 18px;
    width: 100%;
    max-width: 560px;
    transition: var(--transition);
}

.top-search-form:focus-within {
    background: #ffffff;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 4px rgba(121, 40, 202, 0.12);
}

.top-search-form input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    padding: 6px 10px;
    width: 100%;
}

.top-search-form input::placeholder {
    color: var(--text-muted);
}

.header-right-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
}

.nav-admin-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #ffffff;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    padding: 8px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.nav-admin-btn:hover {
    background: var(--bg-surface);
    border-color: var(--border-active);
}

/* ==========================================================================
   Dual-tier Classification Bar (Main Models & SV Model Codes)
   ========================================================================== */
.sub-nav-bar {
    background: #ffffff;
    border-bottom: 1px solid var(--border-subtle);
    padding: 10px 0;
    position: sticky;
    top: 70px;
    z-index: 90;
}

.sub-nav-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.category-tabs-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.category-tabs {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
}

.category-tabs::-webkit-scrollbar {
    display: none;
}

.cat-tab {
    padding: 6px 14px;
    border-radius: 999px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.cat-tab:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.cat-tab.active {
    background: #111111;
    color: #ffffff;
    border-color: #111111;
}

.cat-tab.v-accent {
    background: rgba(121, 40, 202, 0.08);
    color: var(--accent-purple);
}

.cat-tab.v-accent.active {
    background: var(--accent-purple);
    color: #ffffff;
}

/* SV-Code Specific Classification Strip */
.sv-filter-strip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 8px;
    border-top: 1px dashed var(--border-subtle);
    overflow-x: auto;
    scrollbar-width: none;
}

.sv-filter-label {
    font-size: 0.78rem;
    font-weight: 800;
    color: #111;
    background: #e9ecef;
    padding: 3px 8px;
    border-radius: 4px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Toggle & Quick Tens Bar */
.btn-toggle-codes {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #0f172a;
    color: #ffffff;
    border: 1px solid #0f172a;
    padding: 3px 12px;
    border-radius: 4px;
    font-size: 0.76rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-toggle-codes:hover {
    background: #1e293b;
}

.btn-toggle-codes.is-expanded {
    background: #475569;
    border-color: #475569;
}

.selected-sv-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #7928ca;
    color: #ffffff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.74rem;
    font-weight: 700;
    white-space: nowrap;
}

.selected-sv-indicator a {
    color: #fff;
    text-decoration: none;
    font-weight: 800;
    margin-left: 2px;
    opacity: 0.85;
}

.selected-sv-indicator a:hover {
    opacity: 1;
}

.quick-tens-strip {
    display: flex;
    align-items: center;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: none;
    margin-left: 4px;
}

.quick-tens-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    white-space: nowrap;
    margin-right: 2px;
}

.btn-quick-tens {
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.70rem;
    font-weight: 700;
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    color: #334155;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.btn-quick-tens:hover {
    background: #0f172a;
    color: #fff;
    border-color: #0f172a;
}

/* Expanded Tens-Grouped Panel (Natural document flow & smooth scroll) */
.code-panel-container {
    padding-top: 14px;
    padding-bottom: 8px;
}

.code-groups-panel {
    background: #ffffff;
    border: 1.5px solid #cbd5e1;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    margin-top: 0;
    margin-bottom: 24px;
    padding: 18px 22px;
    animation: panelSlideDown 0.22s ease-out;
}

@keyframes panelSlideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    margin-bottom: 14px;
    border-bottom: 1.5px solid #f1f5f9;
    flex-wrap: wrap;
    gap: 10px;
}

.panel-title-area {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
}

.panel-main-title {
    font-size: 0.96rem;
    font-weight: 800;
    color: #0f172a;
    display: flex;
    align-items: center;
    gap: 6px;
}

.panel-sub-desc {
    font-size: 0.77rem;
    color: var(--text-muted);
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.panel-filter-input {
    padding: 4px 10px;
    font-size: 0.76rem;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    width: 210px;
    outline: none;
    transition: var(--transition);
}

.panel-filter-input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 2px rgba(121,40,202,0.12);
}

.panel-reset-btn {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 4px;
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    color: #475569;
    text-decoration: none;
    transition: var(--transition);
}

.panel-reset-btn:hover, .panel-reset-btn.active {
    background: #0f172a;
    color: #ffffff;
    border-color: #0f172a;
}

.panel-close-btn {
    font-size: 0.75rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 4px;
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    color: #0f172a;
    cursor: pointer;
    transition: var(--transition);
}

.panel-close-btn:hover {
    background: #e2e8f0;
}

/* Families Grid: SV & DC Side-by-Side */
.panel-families-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 960px) {
    .panel-families-grid {
        grid-template-columns: 1fr;
    }
}

.family-column {
    background: #f8fafc;
    border-radius: 6px;
    padding: 14px;
    border: 1px solid #e2e8f0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.family-column.family-sv {
    border-top: 3px solid var(--accent-purple);
}

.family-column.family-dc {
    border-top: 3px solid #0284c7;
}

.family-column.family-special {
    grid-column: 1 / -1;
    border-top: 3px solid #0f172a;
}

.family-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 2px;
}

.family-badge {
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 0.72rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.5px;
}

.family-badge.badge-sv {
    background: var(--accent-purple);
}

.family-badge.badge-dc {
    background: #0284c7;
}

.family-badge.badge-special {
    background: #0f172a;
}

.family-name {
    font-size: 0.84rem;
    font-weight: 800;
    color: #1e293b;
}

.family-groups-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* 10s Group Row */
.code-tens-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: #ffffff;
    padding: 6px 10px;
    border-radius: 5px;
    border: 1px solid #e2e8f0;
    transition: var(--transition);
    scroll-margin-top: 150px;
}

.code-tens-row:hover {
    border-color: #94a3b8;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.tens-row-label {
    min-width: 80px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 4px;
    padding-top: 3px;
}

.tens-name {
    font-size: 0.74rem;
    font-weight: 800;
    color: #1e293b;
    white-space: nowrap;
}

.tens-count {
    font-size: 0.65rem;
    font-weight: 700;
    color: #64748b;
    background: #f1f5f9;
    padding: 1px 5px;
    border-radius: 8px;
}

.tens-row-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    flex: 1;
}

.tens-row-chips .sv-chip-btn {
    padding: 2px 7px;
    font-size: 0.73rem;
    border-radius: 3px;
}

.sv-chip-btn {
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    white-space: nowrap;
    transition: var(--transition);
}

.sv-chip-btn:hover {
    border-color: #111;
    color: #111;
}

.sv-chip-btn.active {
    background: #111111;
    color: #ffffff;
    border-color: #111111;
}

.product-count-badge {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ==========================================================================
   Hierarchical Group Sections
   ========================================================================== */
.series-group-section {
    margin-bottom: 40px;
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px 24px 28px;
    box-shadow: var(--shadow-card);
}

.series-group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding-bottom: 16px;
    margin-bottom: 20px;
    border-bottom: 1.5px solid var(--border-subtle);
}

.series-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.series-v-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-purple);
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 800;
    padding: 4px 14px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.5px;
}

.series-main-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: #111111;
}

.series-type-tag {
    font-size: 0.78rem;
    font-weight: 600;
    background: #eef2ff;
    color: #4338ca;
    padding: 3px 8px;
    border-radius: 4px;
}

.series-meta-info {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Sub-Models 2nd Grid with Dedicated Model Code Column
   ========================================================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
    gap: 16px;
}

.product-card {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-card);
}

.product-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-purple);
    box-shadow: var(--shadow-hover);
}

/* Dedicated Split Header for Submodel & Model Code */
.card-submodel-header {
    background: #f8f9fa;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.submodel-name-badge {
    font-size: 0.76rem;
    font-weight: 700;
    color: #111111;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-series-tag {
    display: inline-flex;
    align-items: center;
    background: var(--accent-purple);
    color: #ffffff;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.70rem;
    font-weight: 800;
    letter-spacing: 0.4px;
    flex-shrink: 0;
    white-space: nowrap;
}

/* Official Dedicated Model Code Tag */
.submodel-code-column {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    background: #111111;
    color: #ffffff;
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.submodel-code-column .code-lbl {
    font-size: 0.64rem;
    color: #aaa;
    font-weight: 600;
}

/* Smaller Compact Thumbnail */
.card-image-wrap {
    background: #ffffff;
    position: relative;
    padding-top: 68%;
    overflow: hidden;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 88%;
    height: 88%;
    object-fit: contain;
    transition: transform 0.35s ease;
}

.product-card:hover .card-image {
    transform: translate(-50%, -50%) scale(1.06);
}

.card-badges {
    position: absolute;
    top: 8px;
    left: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 2;
}

.badge-featured {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-magenta));
    color: #fff;
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.68rem;
    font-weight: 700;
}

.card-body {
    padding: 14px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 0.94rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.6em;
}

.card-title a {
    color: var(--text-primary);
    transition: color 0.15s ease;
}

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

.card-specs-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 10px;
}

.spec-chip {
    background: var(--bg-surface);
    color: var(--text-secondary);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 600;
}

.spec-chip-code {
    background: #eef2ff;
    color: #4338ca;
    font-weight: 700;
}

.card-footer {
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}

.card-price {
    font-size: 1.15rem;
    font-weight: 800;
    color: #111111;
}

.card-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 11px;
    background: #111111;
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    font-weight: 600;
    transition: var(--transition);
}

.card-btn:hover {
    background: var(--accent-purple);
}

/* ==========================================================================
   Detail Page
   ========================================================================== */
.detail-container {
    padding: 28px 0 70px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.breadcrumb a:hover {
    color: var(--text-primary);
}

.detail-layout {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 40px;
    align-items: start;
    margin-bottom: 50px;
}

.gallery-wrapper {
    position: sticky;
    top: 90px;
}

.main-preview-box {
    background: #ffffff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    padding: 24px;
}

.main-preview-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.thumb-strip {
    display: flex;
    gap: 10px;
    overflow-x: auto;
}

.thumb-item {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    background: #ffffff;
    box-shadow: var(--shadow-card);
    cursor: pointer;
    overflow: hidden;
    flex-shrink: 0;
    padding: 6px;
    transition: var(--transition);
}

.thumb-item.active, .thumb-item:hover {
    border-color: var(--accent-purple);
}

.thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.detail-info {
    display: flex;
    flex-direction: column;
}

/* Dedicated Model Code Section in Detail View */
.detail-code-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.detail-code-box {
    background: #111111;
    color: #ffffff;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.detail-series-box {
    background: var(--accent-purple);
    color: #ffffff;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 700;
}

.detail-subname-box {
    background: #f1f3f5;
    color: #111111;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 700;
}

.detail-title {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 6px;
    color: #111111;
}

.detail-title-en {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 18px;
}

.detail-price-box {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
    padding: 18px 22px;
    border-radius: var(--radius-md);
    margin-bottom: 22px;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}

.detail-price-label {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.detail-price-num {
    font-size: 1.85rem;
    font-weight: 800;
    color: #111111;
}

.detail-summary-card {
    background: #ffffff;
    border-left: 4px solid var(--accent-purple);
    border-top: 1px solid var(--border-subtle);
    border-right: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 22px;
    font-size: 0.98rem;
    line-height: 1.6;
    color: #333333;
    box-shadow: var(--shadow-card);
}

.spec-table-box {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 22px;
}

.section-subtitle {
    font-size: 1.08rem;
    font-weight: 700;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #111111;
}

.spec-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.spec-row {
    background: var(--bg-surface);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
}

.spec-row.highlight-code {
    background: #fdf2f8;
    border: 1px solid #fbcfe8;
}

.spec-name {
    font-size: 0.76rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.spec-val {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.detail-desc-content {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-md);
    padding: 26px;
    font-size: 0.96rem;
    color: #333333;
    line-height: 1.8;
}

.detail-desc-content h4 {
    color: #111111;
    font-size: 1.15rem;
    margin: 18px 0 8px;
}

.detail-desc-content ul {
    margin-left: 20px;
    margin-bottom: 12px;
}

.detail-desc-content li {
    margin-bottom: 6px;
}

/* ==========================================================================
   Admin Interface Styles (Dedicated Model Code Column)
   ========================================================================== */
.admin-body {
    background: #f8f9fa;
}

.admin-nav {
    background: #ffffff;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
}

.admin-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.admin-top-links {
    display: flex;
    align-items: center;
    gap: 18px;
}

.admin-user-tag {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 0.86rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent-purple);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-purple-light);
}

.btn-secondary {
    background: #ffffff;
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

.btn-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--border-active);
}

.btn-danger {
    background: #fff0f3;
    color: #e0245e;
    border-color: #ffccd5;
}

.btn-danger:hover {
    background: #ffe3e8;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.78rem;
}

.data-table-wrapper {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-top: 14px;
    box-shadow: var(--shadow-card);
}

.data-table {
    width: 100%;
    min-width: 960px;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.78rem;
}

.data-table th {
    background: #f8f9fa;
    padding: 7px 10px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border-bottom: 1px solid var(--border-subtle);
    white-space: nowrap;
    text-align: center;
}

.data-table th.th-left {
    text-align: left;
}

.data-table td {
    padding: 5px 8px;
    font-size: 0.76rem;
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
    white-space: nowrap;
}

.data-table tr:hover td {
    background: #fbfbfd;
}

.cell-center {
    text-align: center;
}

.cell-nowrap {
    white-space: nowrap;
}

.table-thumb {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    padding: 1px;
    display: block;
    margin: 0 auto;
}

/* Dedicated Admin Model Code Badge (Code value only) */
.table-code-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #111111;
    color: #ffffff;
    padding: 2px 7px;
    border-radius: 3px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    white-space: nowrap;
    cursor: default;
    transition: var(--transition);
}

.table-code-badge:hover {
    background: var(--accent-purple);
}

.table-product-title-wrap {
    max-width: 260px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.table-product-title-wrap a {
    font-weight: 700;
    color: #111;
    font-size: 0.78rem;
    text-decoration: none;
}

.table-product-title-wrap a:hover {
    text-decoration: underline;
    color: var(--accent-purple);
}

.btn-xs {
    padding: 3px 8px;
    font-size: 0.72rem;
    border-radius: 4px;
    line-height: 1.2;
    white-space: nowrap;
}

.form-card {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: 28px;
    margin: 20px 0;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 16px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-control {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    padding: 10px 12px;
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    outline: none;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(121, 40, 202, 0.12);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

.status-badge {
    display: inline-flex;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
}

.status-active {
    background: #e6f9ed;
    color: #16a34a;
}

.status-inactive {
    background: #f1f3f5;
    color: #6c757d;
}

.login-box {
    max-width: 400px;
    margin: 60px auto;
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-hover);
}

.site-footer {
    background: #ffffff;
    border-top: 1px solid var(--border-subtle);
    padding: 36px 0 24px;
    margin-top: auto;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

@media (max-width: 960px) {
    .nav-container {
        grid-template-columns: 1fr;
        height: auto;
        padding: 12px 0;
        gap: 12px;
    }
    .header-center-search {
        order: 2;
    }
    .header-right-actions {
        order: 3;
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .detail-layout {
        grid-template-columns: 1fr;
    }
    .spec-grid {
        grid-template-columns: 1fr;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 12px;
    }
    .series-group-section {
        padding: 16px 14px 20px;
    }
    .series-main-title {
        font-size: 1.15rem;
    }
}

/* ==========================================================================
   Admin Security Quiz Modal
   ========================================================================== */
.admin-auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-auth-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(4px);
}

.admin-auth-card {
    position: relative;
    z-index: 10;
    background: #ffffff;
    width: 90%;
    max-width: 380px;
    border-radius: 12px;
    border: 1.5px solid #cbd5e1;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    animation: modalPopIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPopIn {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}

.admin-auth-card.minimal-auth-card {
    background: #ffffff;
    width: 220px;
    max-width: 90vw;
    border-radius: 12px;
    border: 1px solid #cbd5e1;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.18);
    padding: 18px 16px 16px;
    text-align: center;
}

.minimal-auth-label {
    font-size: 1.15rem;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: 1px;
    margin-bottom: 12px;
    user-select: none;
}

.minimal-auth-input {
    width: 100%;
    text-align: center;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 2px;
    padding: 6px 10px;
    border: 1.5px solid #cbd5e1;
    border-radius: 6px;
    outline: none;
    transition: var(--transition);
    background: #f8fafc;
    color: #0f172a;
}

.minimal-auth-input:focus {
    background: #ffffff;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.minimal-auth-error {
    color: #e0245e;
    font-size: 0.85rem;
    font-weight: 800;
    margin-top: 6px;
}