/* =========================================================================
   KISER IOT SOLUTIONS - Design System
   ========================================================================= */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a25;
    --bg-card: #13131c;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --text-primary: #e8e8ef;
    --text-secondary: #7a7a90;
    --text-muted: #55556a;
    --accent: #00d4aa;
    --accent-hover: #00f0c0;
    --accent-dim: rgba(0, 212, 170, 0.1);
    --accent-glow: rgba(0, 212, 170, 0.15);
    --danger: #ff4466;
    --success: #00d4aa;
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.2s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 1200px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

/* ---- Container ---- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* =========================================================================
   Navigation
   ========================================================================= */

.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-logo {
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.logo-kiser {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.15em;
    color: var(--accent);
}
.logo-iot {
    font-weight: 300;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
    text-transform: uppercase;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-links a {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-secondary);
    transition: color var(--transition);
    letter-spacing: 0.02em;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}
.nav-cta {
    background: var(--accent-dim);
    color: var(--accent) !important;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
}
.nav-cta:hover {
    background: var(--accent);
    color: var(--bg-primary) !important;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-secondary);
    transition: var(--transition);
}

/* =========================================================================
   Buttons
   ========================================================================= */

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    letter-spacing: 0.02em;
}
.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    box-shadow: none;
}
.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid rgba(0, 212, 170, 0.3);
}
.btn-secondary:hover {
    border-color: var(--accent);
    background: var(--accent-dim);
}

/* =========================================================================
   Hero
   ========================================================================= */

.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}
.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}
.accent { color: var(--accent); }
.hero-sub {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 540px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-grid-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-image:
        radial-gradient(circle at 70% 40%, rgba(0, 212, 170, 0.06) 0%, transparent 60%),
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 100% 100%, 60px 60px, 60px 60px;
}

/* =========================================================================
   Sections
   ========================================================================= */

.section {
    padding: 80px 0;
}
.section-alt {
    background: var(--bg-secondary);
}
.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}
.section-sub {
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 1.05rem;
}
.page-header {
    padding-bottom: 0;
}
.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.page-sub {
    color: var(--text-secondary);
    font-size: 1.05rem;
}
.back-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition);
}
.back-link:hover { color: var(--accent); }

/* =========================================================================
   Cards
   ========================================================================= */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.card-body {
    padding: 20px 24px 24px;
}
.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.card-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.card-link {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 500;
}

/* =========================================================================
   Products
   ========================================================================= */

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}
.product-card { display: flex; flex-direction: column; }
.product-card .card-body { flex: 1; display: flex; flex-direction: column; }
.product-card .card-text { flex: 1; }
.product-img-placeholder {
    height: 200px;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 16px;
    position: relative;
}
.product-img-placeholder.large { height: 400px; }
.product-category-badge {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--accent-dim);
    color: var(--accent);
    padding: 4px 10px;
    border-radius: 4px;
}
.product-category-badge.inline {
    display: inline-block;
    margin-bottom: 12px;
}
.product-price {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent);
}

/* Filter bar */
.filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.filter-chip {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all var(--transition);
}
.filter-chip:hover,
.filter-chip.active {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}

/* Product detail */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}
.product-detail-info h1 {
    font-size: 2rem;
    margin-bottom: 16px;
}
.product-detail-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}
.product-detail-price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 32px;
}
.product-detail-info .btn {
    margin-right: 12px;
    margin-bottom: 12px;
}

/* =========================================================================
   Portfolio
   ========================================================================= */

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}
.portfolio-img-placeholder {
    height: 220px;
    background: linear-gradient(135deg, var(--bg-tertiary), rgba(0, 212, 170, 0.05));
}
.portfolio-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}
.portfolio-client {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 500;
}
.portfolio-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.portfolio-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 12px;
}
.tag {
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 12px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* =========================================================================
   Features (Why Kiser)
   ========================================================================= */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}
.feature-card {
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition);
}
.feature-card:hover {
    border-color: var(--accent);
}
.feature-icon {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--accent);
}
.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}
.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* =========================================================================
   CTA Section
   ========================================================================= */

.cta-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.cta-inner {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}
.cta-inner h2 {
    font-size: 1.8rem;
    margin-bottom: 12px;
}
.cta-inner p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}
.cta-inner .hero-actions {
    justify-content: center;
}

/* =========================================================================
   Contact
   ========================================================================= */

.contact-layout {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: start;
}
.contact-form { max-width: 560px; }
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}
.required { color: var(--accent); }
input[type="text"],
input[type="email"],
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition);
}
input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}
textarea { resize: vertical; }
::placeholder { color: var(--text-muted); }

.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
}
.contact-info-card h3 {
    margin-bottom: 12px;
}
.contact-info-card > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 24px;
}
.contact-detail {
    margin-bottom: 16px;
}
.contact-detail strong {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 2px;
}
.contact-detail span {
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* =========================================================================
   Builder
   ========================================================================= */

.builder-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    align-items: start;
}
.builder-steps-indicator {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 40px;
}
.step-dot {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    white-space: nowrap;
    transition: color var(--transition);
}
.step-dot span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--border);
    font-size: 0.8rem;
    font-weight: 600;
    transition: all var(--transition);
}
.step-dot.active {
    color: var(--accent);
}
.step-dot.active span {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}
.step-dot.completed span {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
}
.step-dot.completed {
    color: var(--text-secondary);
}
.step-line {
    flex: 1;
    height: 1px;
    background: var(--border);
    margin: 0 12px;
}
.builder-step {
    display: none;
}
.builder-step.active {
    display: block;
}
.builder-step h2 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}
.step-desc {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 0.95rem;
}
.builder-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}
.builder-options.compact {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
    margin-bottom: 24px;
}
.builder-option {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}
.builder-option:hover {
    border-color: var(--border-hover);
    background: var(--bg-secondary);
}
.builder-option.selected {
    border-color: var(--accent);
    background: var(--accent-dim);
    box-shadow: 0 0 20px var(--accent-glow);
}
.option-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 6px;
    gap: 12px;
}
.option-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
}
.option-price {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    white-space: nowrap;
}
.builder-option p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.function-category {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
    margin-top: 24px;
}
.function-category:first-of-type {
    margin-top: 0;
}
.builder-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

/* Builder sidebar */
.builder-sidebar {
    position: sticky;
    top: 88px;
}
.builder-summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
}
.builder-summary-card h3 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-weight: 500;
}
.summary-line {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 14px;
    gap: 12px;
}
.summary-label {
    font-size: 0.82rem;
    color: var(--text-muted);
}
.summary-value {
    font-size: 0.85rem;
    font-weight: 500;
    text-align: right;
    color: var(--text-secondary);
}
.summary-divider {
    height: 1px;
    background: var(--border);
    margin: 16px 0;
}
.summary-line.total .summary-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}
.summary-line.total .summary-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
}
.summary-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 16px;
    text-align: center;
}

/* Builder review summary (step 4) */
.builder-summary-review {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 32px;
}
.review-section {
    margin-bottom: 16px;
}
.review-section:last-child { margin-bottom: 0; }
.review-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}
.review-value {
    font-size: 0.95rem;
    font-weight: 500;
}
.review-value .tag {
    margin-top: 4px;
}
.builder-form {
    max-width: 480px;
}

/* =========================================================================
   Flash Messages
   ========================================================================= */

.flash-container {
    padding-top: 16px;
}
.flash {
    padding: 14px 20px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    margin-bottom: 8px;
}
.flash-success {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.2);
    color: var(--accent);
}
.flash-error {
    background: rgba(255, 68, 102, 0.1);
    border: 1px solid rgba(255, 68, 102, 0.2);
    color: var(--danger);
}

/* =========================================================================
   Empty State
   ========================================================================= */

.empty-state {
    text-align: center;
    padding: 80px 0;
    color: var(--text-secondary);
}
.empty-state .btn { margin-top: 16px; }

/* =========================================================================
   Footer
   ========================================================================= */

.footer {
    border-top: 1px solid var(--border);
    padding: 48px 0;
    margin-top: 40px;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 32px;
}
.footer-tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 8px;
}
.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: color var(--transition);
}
.footer-links a:hover {
    color: var(--accent);
}
.footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
    width: 100%;
    text-align: center;
    margin-top: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

/* =========================================================================
   Builder View Tabs
   ========================================================================= */

.builder-view-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 32px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 4px;
    width: fit-content;
}
.view-tab {
    padding: 10px 24px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all var(--transition);
    letter-spacing: 0.02em;
}
.view-tab:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}
.view-tab.active {
    background: var(--accent);
    color: var(--bg-primary);
}
.builder-view {
    display: none;
}
.builder-view.active {
    display: block;
}

/* =========================================================================
   3D Preview
   ========================================================================= */

.preview3d-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 32px;
    align-items: start;
}
.preview3d-canvas-wrap {
    position: relative;
    width: 100%;
    height: 560px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.preview3d-canvas-wrap canvas {
    display: block;
    border-radius: var(--radius-lg);
}
.preview3d-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 5;
}
.preview3d-placeholder p {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}
.preview3d-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    position: sticky;
    top: 88px;
}
.preview3d-sidebar h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.preview3d-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}
.preview3d-section {
    margin-bottom: 20px;
}
.preview3d-section h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.preview3d-info {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}
.preview3d-info .tag {
    display: inline-block;
    margin: 2px 4px 2px 0;
}
.preview3d-summary {
    padding-top: 16px;
    margin-top: 16px;
    border-top: 1px solid var(--border);
}

/* Cover color picker */
.cover-color-picker {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.cover-swatch {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    padding: 0;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}
.cover-swatch:hover {
    transform: scale(1.15);
    border-color: var(--text-secondary);
}
.cover-swatch.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-dim), 0 2px 8px rgba(0, 0, 0, 0.4);
    transform: scale(1.1);
}

/* =========================================================================
   Responsive
   ========================================================================= */

@media (max-width: 1024px) {
    .builder-layout {
        grid-template-columns: 1fr;
    }
    .builder-sidebar {
        position: static;
        order: -1;
    }
    .preview3d-layout {
        grid-template-columns: 1fr;
    }
    .preview3d-canvas-wrap {
        height: 400px;
    }
    .preview3d-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border);
        padding: 16px 24px 24px;
        gap: 16px;
    }
    .nav-links.open { display: flex; }
    .nav-cta { text-align: center; }

    .hero { min-height: 70vh; }
    .hero-title { font-size: 2rem; }

    .section { padding: 48px 0; }
    .page-title { font-size: 1.8rem; }

    .product-grid { grid-template-columns: 1fr; }
    .portfolio-grid { grid-template-columns: 1fr; }
    .product-detail { grid-template-columns: 1fr; gap: 24px; }
    .contact-layout { grid-template-columns: 1fr; }

    .builder-options { grid-template-columns: 1fr; }
    .builder-steps-indicator { flex-wrap: wrap; gap: 8px; }
    .step-line { display: none; }

    .preview3d-canvas-wrap { height: 300px; }
    .builder-view-tabs { width: 100%; }
    .view-tab { flex: 1; text-align: center; }
}