/* MAI THỊNH PHÁT — Premium Architectural × Modern Commerce */
:root {
    --color-canvas: #ffffff;
    --color-surface: #ffffff;
    --color-ink: #1c2938;
    --color-primary: #1a579a;
    --color-primary-dark: #15477e;
    --color-primary-active: #103862;
    --color-accent: #d72e33;
    --color-accent-dark: #b42328;
    --color-accent-active: #941c21;
    --color-accent-ink: #b42328;
    --color-accent-on-dark: #ffffff;
    --color-muted: #526477;
    --color-border: #dce4ec;
    --color-soft: #f4f7fa;
    --color-focus: #1a579a;
    --color-on-dark: #ffffff;
    --color-on-dark-muted: #dce4ec;
    --color-link-on-dark: #b9d8f4;
    --color-disabled: #526477;
    --color-disabled-bg: #e9eef3;
    --color-control-border: #718296;

    --font-sans: "Be Vietnam Pro", "Segoe UI", Arial, sans-serif;
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-md: 1.125rem;
    --text-lg: 1.375rem;
    --text-xl: clamp(1.75rem, 3vw, 2.5rem);
    --text-2xl: clamp(2.25rem, 5vw, 4.75rem);

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --border: 1px solid var(--color-border);
    --shadow-soft: 0 16px 44px rgba(28, 41, 56, 0.08);
    --container: 77.5rem;
    --transition: 180ms ease;

    /* Bridge legacy Bootstrap utilities into the approved palette. */
    --bs-primary: var(--color-primary);
    --bs-primary-rgb: 26, 87, 154;
    --bs-secondary: var(--color-accent);
    --bs-secondary-rgb: 215, 46, 51;
    --bs-dark: var(--color-ink);
    --bs-dark-rgb: 28, 41, 56;
    --bs-light: var(--color-soft);
    --bs-light-rgb: 244, 247, 250;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-width: min(20rem, 100%);
    margin: 0;
    color: var(--color-ink);
    background: var(--color-canvas);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.65;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

img,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
}

button,
input,
select,
textarea {
    font: inherit;
}

:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
}

.skip-link {
    position: fixed;
    z-index: 2000;
    top: var(--space-3);
    left: var(--space-3);
    padding: var(--space-3) var(--space-5);
    color: var(--color-on-dark);
    background: var(--color-ink);
    transform: translateY(-150%);
    transition: transform var(--transition);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-container {
    width: min(calc(100% - 3rem), var(--container));
    margin-inline: auto;
}

.home-section {
    padding-block: var(--space-24);
}

.section-heading {
    max-width: 46rem;
}

.section-heading--center {
    margin-inline: auto;
    text-align: center;
}

.section-heading__eyebrow,
.home-hero__eyebrow {
    margin: 0 0 var(--space-4);
    color: var(--color-accent-ink);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.16em;
    line-height: 1.4;
    text-transform: uppercase;
}

.section-heading h2,
.editorial-section h2,
.contact-cta h2 {
    margin: 0;
    font-size: var(--text-xl);
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.18;
}

.section-heading__description {
    max-width: 42rem;
    margin: var(--space-5) 0 0;
    color: var(--color-muted);
}

.section-heading-row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    align-items: end;
    margin-bottom: var(--space-12);
}

.section-heading-row .section-heading {
    grid-column: span 7;
}

.section-heading-row__aside {
    grid-column: 9 / span 4;
    margin: 0;
    color: var(--color-muted);
}

.section-heading-row--commerce {
    align-items: center;
}

.section-heading-row--commerce > .text-link {
    grid-column: 10 / span 3;
    justify-self: end;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.button {
    display: inline-flex;
    min-height: 3rem;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.375rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.25;
    text-align: center;
    text-decoration: none;
    transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition);
}

.button:hover {
    transform: translateY(-1px);
}

.button--small {
    min-height: 2.75rem;
    padding-inline: var(--space-5);
}

.button--primary {
    color: var(--color-on-dark);
    background: var(--color-primary);
}

.button--primary:hover {
    color: var(--color-on-dark);
    background: var(--color-primary-dark);
}

.button--primary:active,
.button--secondary:active {
    color: var(--color-on-dark);
    background: var(--color-primary-active);
    transform: none;
}

.button--accent {
    color: var(--color-on-dark);
    background: var(--color-accent);
}

.button--accent:hover { color: var(--color-on-dark); background: var(--color-accent-dark); }
.button--accent:active { color: var(--color-on-dark); background: var(--color-accent-active); }

.button:disabled,
.button[aria-disabled="true"],
button:disabled {
    color: var(--color-disabled);
    border-color: var(--color-border);
    background: var(--color-disabled-bg);
    opacity: 1;
    cursor: not-allowed;
    transform: none;
}

.button--secondary {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: transparent;
}

.button--secondary:hover {
    color: var(--color-on-dark);
    background: var(--color-primary);
}

.button--light {
    color: var(--color-primary-dark);
    background: var(--color-surface);
}

.button--light:hover {
    color: var(--color-primary-dark);
    background: var(--color-soft);
}

.button--on-dark {
    color: var(--color-on-dark);
    border-color: rgba(255, 255, 255, 0.5);
}

.button--on-dark:hover {
    color: var(--color-on-dark);
    border-color: var(--color-on-dark);
    background: rgba(255, 255, 255, 0.08);
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
}

.text-link span {
    transition: transform var(--transition);
}

.text-link:hover span {
    transform: translateX(0.25rem);
}

/* Site header / mobile navigation */
.site-header {
    position: relative;
    z-index: 1000;
    background: var(--color-surface);
}

.site-header__utility {
    color: rgba(255, 255, 255, 0.78);
    background: var(--color-ink);
    font-size: var(--text-xs);
}

.site-header__utility-inner {
    display: flex;
    min-height: 2.5rem;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.site-header__utility p {
    margin: 0;
}

.site-header__utility a {
    color: var(--color-on-dark);
    text-decoration: none;
}

.site-header__main {
    border-bottom: var(--border);
}

.site-header .navbar {
    min-height: 5.25rem;
    padding-block: 0;
}

.site-brand {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-ink);
    text-decoration: none;
}

.site-brand__logo {
    display: block;
    flex: 0 0 auto;
    width: 104px;
    background: var(--color-surface);
}

.site-brand__logo img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: contain;
}

.site-brand__text {
    display: grid;
    line-height: 1.15;
}

.site-brand__text strong {
    font-size: 1.05rem;
    letter-spacing: -0.02em;
}

.site-brand__text small {
    margin-top: var(--space-1);
    color: var(--color-muted);
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.site-header .navbar-collapse {
    align-items: center;
}

.site-nav {
    margin-inline: auto;
    gap: var(--space-2);
}

.site-nav .nav-link {
    position: relative;
    padding: 1.8rem var(--space-3);
    color: var(--color-muted);
    font-size: var(--text-sm);
    font-weight: 500;
}

.site-nav .nav-link::after {
    position: absolute;
    right: var(--space-3);
    bottom: 1.25rem;
    left: var(--space-3);
    height: 2px;
    background: var(--color-accent);
    content: "";
    opacity: 0;
    transform: scaleX(0);
    transition: opacity var(--transition), transform var(--transition);
}

.site-nav .nav-link:hover,
.site-nav .nav-link.active {
    color: var(--color-ink);
}

.site-nav .nav-link:hover::after,
.site-nav .nav-link.active::after {
    opacity: 1;
    transform: scaleX(1);
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-search {
    display: grid;
    width: 2.75rem;
    height: 2.75rem;
    place-items: center;
    border: var(--border);
    color: var(--color-primary);
    text-decoration: none;
}

.header-search svg {
    width: 1.125rem;
    fill: currentColor;
}

.mobile-nav-toggle {
    width: 3rem;
    height: 3rem;
    padding: 0.75rem;
    border: var(--border);
    border-radius: var(--radius-sm);
}

.mobile-nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 0;
    flex: none;
    background: var(--color-primary);
}

.site-header .mobile-nav-toggle:focus { box-shadow: none; }

/* Homepage hero */
.home-hero {
    overflow: hidden;
    padding-block: var(--space-16) var(--space-20);
    background: var(--color-canvas);
}

.home-hero__grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    align-items: center;
}

.home-hero__content {
    grid-column: span 5;
    padding-block: var(--space-8);
}

.home-hero__eyebrow {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.home-hero__eyebrow span {
    width: 2rem;
    height: 1px;
    background: currentColor;
}

.home-hero h1 {
    margin: 0;
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -0.055em;
    line-height: 1.06;
}

.home-hero h1 em {
    color: var(--color-primary);
    font-style: normal;
}

.home-hero__lead {
    max-width: 35rem;
    margin: var(--space-6) 0 var(--space-8);
    color: var(--color-muted);
    font-size: var(--text-md);
}

.home-hero__principles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    max-width: 32rem;
    margin: var(--space-12) 0 0;
    border-top: var(--border);
}

.home-hero__principles > div {
    padding: var(--space-4) var(--space-3) 0 0;
}

.home-hero__principles dt {
    color: var(--color-accent);
    font-size: var(--text-xs);
    font-weight: 700;
}

.home-hero__principles dd {
    margin: var(--space-1) 0 0;
    font-size: var(--text-sm);
    font-weight: 500;
}

.home-hero__visual {
    position: relative;
    grid-column: 7 / span 6;
    margin: 0;
}

.home-hero__visual::before {
    position: absolute;
    z-index: -1;
    top: 6%;
    right: -25vw;
    bottom: 6%;
    left: 32%;
    background: var(--color-primary);
    content: "";
}

.home-hero__visual img {
    width: 100%;
    aspect-ratio: 38 / 41;
    border: 0.5rem solid var(--color-surface);
    object-fit: cover;
}

.home-hero__visual figcaption {
    position: absolute;
    right: var(--space-6);
    bottom: var(--space-6);
    left: var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    color: var(--color-ink);
    background: rgba(255, 255, 255, 0.94);
    font-size: var(--text-xs);
}

.home-hero__visual figcaption span {
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Purpose / Category cards */
.purpose-section {
    background: var(--color-surface);
}

.purpose-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: var(--border);
    border-left: var(--border);
}

.purpose-card {
    display: grid;
    min-height: 21rem;
    grid-template-rows: 9.5rem 1fr;
    border-right: var(--border);
    border-bottom: var(--border);
    background: var(--color-surface);
    transition: box-shadow var(--transition);
}

.purpose-card:hover {
    box-shadow: inset 0 -3px var(--color-primary);
}

.purpose-card__visual {
    position: relative;
    display: grid;
    overflow: hidden;
    place-items: center;
    border-bottom: var(--border);
    background: var(--color-soft);
}

.purpose-card__visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.purpose-card__content {
    padding: var(--space-6);
}

.purpose-card__number {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    color: var(--color-accent-ink);
    background: rgba(255, 255, 255, 0.9);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.12em;
}

.purpose-card h3 {
    margin: 0 0 var(--space-3);
    font-size: var(--text-lg);
    font-weight: 600;
    letter-spacing: -0.03em;
}

.purpose-card p {
    margin: 0 0 var(--space-6);
    color: var(--color-muted);
    font-size: var(--text-sm);
}

.purpose-card a {
    color: var(--color-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
}

/* Commerce cards */
.featured-section {
    background: var(--color-canvas);
}

.commerce-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-6);
}

.commerce-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    border: var(--border);
    background: var(--color-surface);
}

.commerce-card__media {
    display: block;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    background: var(--color-soft);
}

.commerce-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

.commerce-card:hover .commerce-card__media img {
    transform: scale(1.025);
}

.commerce-card__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: var(--space-5);
}

.commerce-card__category {
    align-self: flex-start;
    margin-bottom: var(--space-3);
    color: var(--color-accent-ink);
    font-size: var(--text-xs);
    font-weight: 600;
    text-decoration: none;
}

.commerce-card h3 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
}

.commerce-card h3 a {
    text-decoration: none;
}

.commerce-card__description {
    margin: var(--space-3) 0 var(--space-5);
    color: var(--color-muted);
    font-size: var(--text-sm);
}

.commerce-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-top: auto;
    padding-top: var(--space-4);
    border-top: var(--border);
}

.commerce-card__price {
    margin: 0;
    font-size: var(--text-sm);
    font-weight: 600;
}

.commerce-card__link {
    display: grid;
    width: 2.5rem;
    height: 2.5rem;
    flex: 0 0 auto;
    place-items: center;
    color: var(--color-primary);
    border: var(--border);
    text-decoration: none;
}

.commerce-card__link:hover {
    color: var(--color-on-dark);
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.commerce-card__link svg {
    width: 1rem;
    fill: currentColor;
}

.empty-state {
    display: grid;
    grid-template-columns: 5rem minmax(0, 1fr);
    gap: var(--space-6);
    align-items: center;
    padding: var(--space-6);
    border: var(--border);
    background: var(--color-surface);
}

.empty-state__mark {
    display: flex;
    height: 5rem;
    align-items: flex-end;
    justify-content: center;
    gap: 0.35rem;
    background: var(--color-soft);
}

.empty-state__mark span {
    width: 0.7rem;
    background: var(--color-primary);
}

.empty-state__mark span:nth-child(1) { height: 35%; background: var(--color-accent); }
.empty-state__mark span:nth-child(2) { height: 65%; }
.empty-state__mark span:nth-child(3) { height: 48%; background: var(--color-muted); }

.empty-state h3 {
    margin: 0;
    font-size: var(--text-lg);
}

.empty-state p {
    max-width: 44rem;
    margin: var(--space-2) 0 var(--space-3);
    color: var(--color-muted);
}

/* Editorial solutions */
.editorial-wrap {
    background: var(--color-surface);
}

.editorial-section {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    align-items: stretch;
}

.editorial-section__visual {
    position: relative;
    grid-column: span 5;
    min-height: 34rem;
    overflow: hidden;
    padding: var(--space-10);
    color: var(--color-on-dark);
    background: var(--color-primary);
}

.editorial-section__visual::before {
    position: absolute;
    top: 8%;
    right: -13%;
    width: 22rem;
    height: 22rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    content: "";
}

.editorial-section__sample {
    position: absolute;
    width: 8rem;
    height: 11rem;
    box-shadow: var(--shadow-soft);
}

.editorial-section__sample--one {
    top: 17%;
    left: 16%;
    background: var(--color-soft);
    transform: rotate(-7deg);
}

.editorial-section__sample--two {
    top: 26%;
    left: 40%;
    background: var(--color-border);
    transform: rotate(5deg);
}

.editorial-section__visual p {
    position: absolute;
    right: var(--space-10);
    bottom: var(--space-10);
    left: var(--space-10);
    margin: 0;
    font-size: var(--text-md);
}

.editorial-section__content {
    grid-column: 7 / span 6;
    align-self: center;
    padding: var(--space-10) 0 var(--space-10) var(--space-8);
}

.editorial-section__content > p:not(.section-heading__eyebrow) {
    margin: var(--space-6) 0 var(--space-8);
    color: var(--color-muted);
}

.editorial-steps {
    margin: 0 0 var(--space-8);
    padding: 0;
    list-style: none;
}

.editorial-steps li {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: var(--space-4);
    padding-block: var(--space-5);
    border-top: var(--border);
}

.editorial-steps li > span {
    color: var(--color-accent-ink);
    font-size: var(--text-xs);
    font-weight: 700;
}

.editorial-steps strong {
    font-size: var(--text-sm);
}

.editorial-steps p {
    margin: var(--space-1) 0 0;
    color: var(--color-muted);
    font-size: var(--text-sm);
}

/* Brand discovery */
.brand-section {
    background: var(--color-canvas);
}

.brand-discovery {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    align-items: start;
}

.brand-discovery .section-heading {
    grid-column: span 6;
}

.brand-discovery__criteria {
    grid-column: 8 / span 5;
    border-top: var(--border);
}

.brand-discovery__criteria > div {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    padding-block: var(--space-4);
    border-bottom: var(--border);
}

.brand-discovery__criteria span {
    grid-row: span 2;
    color: var(--color-accent-ink);
    font-size: var(--text-xs);
    font-weight: 700;
}

.brand-discovery__criteria strong {
    font-size: var(--text-sm);
}

.brand-discovery__criteria p {
    margin: var(--space-1) 0 0;
    color: var(--color-muted);
    font-size: var(--text-sm);
}

.brand-discovery > .button {
    grid-column: span 3;
    justify-self: start;
}

/* Contact CTA */
.home-contact-wrap {
    margin-bottom: var(--space-24);
}

.contact-cta {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    padding: var(--space-16);
    color: var(--color-on-dark);
    background: var(--color-primary);
}

.contact-cta > div:first-child {
    grid-column: span 6;
}

.contact-cta h2 {
    color: var(--color-on-dark);
}

.contact-cta .section-heading__eyebrow {
    color: var(--color-accent-on-dark);
}

.contact-cta__action {
    grid-column: 8 / span 5;
}

.contact-cta__action > p {
    margin: 0 0 var(--space-6);
    color: rgba(255, 255, 255, 0.74);
}

/* Product catalog — UI-3 */
.catalog-page {
    background: var(--color-canvas);
}

.catalog-hero {
    padding-block: var(--space-16);
    color: var(--color-ink);
    background: var(--color-soft);
    border-bottom: var(--border);
}

.catalog-hero__grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    align-items: end;
}

.catalog-hero__grid > div {
    grid-column: span 8;
}

.catalog-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
    color: var(--color-muted);
    font-size: var(--text-xs);
}

.catalog-breadcrumb a {
    color: inherit;
    text-decoration: none;
}

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

.catalog-hero .section-heading__eyebrow {
    color: var(--color-accent-ink);
}

.catalog-hero h1 {
    max-width: 48rem;
    margin: 0;
    color: var(--color-ink);
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -0.05em;
    line-height: 1.06;
}

.catalog-hero__intro {
    grid-column: 9 / span 4;
    max-width: 28rem;
    margin: 0;
    color: var(--color-muted);
}

.catalog-section {
    padding-block: var(--space-16) var(--space-24);
}

.catalog-toolbar {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    align-items: end;
    margin-bottom: var(--space-10);
    padding-bottom: var(--space-8);
    border-bottom: var(--border);
}

.catalog-toolbar > div:first-child {
    grid-column: span 5;
}

.catalog-toolbar__count {
    margin: 0 0 var(--space-2);
    color: var(--color-accent-ink);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.catalog-toolbar h2 {
    margin: 0;
    font-size: var(--text-xl);
    letter-spacing: -0.035em;
    line-height: 1.18;
}

.catalog-controls {
    grid-column: 7 / span 6;
    display: grid;
    grid-template-columns: minmax(15rem, 1fr) 12rem;
    gap: var(--space-3);
}

.catalog-search {
    display: grid;
    grid-template-columns: 1fr 3rem;
    background: var(--color-surface);
}

.catalog-search input,
.catalog-sort select {
    min-width: 0;
    min-height: 3rem;
    padding: 0.7rem var(--space-4);
    color: var(--color-ink);
    border: var(--border);
    border-radius: 0;
    background: var(--color-surface);
}

.catalog-search input {
    border-right: 0;
}

.catalog-search button {
    display: grid;
    min-height: 3rem;
    place-items: center;
    padding: 0;
    color: var(--color-on-dark);
    border: 1px solid var(--color-primary);
    background: var(--color-primary);
}

.catalog-search button:hover {
    background: var(--color-primary-dark);
}

.catalog-search svg {
    width: 1.125rem;
    fill: currentColor;
}

.catalog-sort {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    border: var(--border);
    background: var(--color-surface);
}

.catalog-sort label {
    padding-left: var(--space-4);
    color: var(--color-muted);
    font-size: var(--text-xs);
}

.catalog-sort select {
    border: 0;
    font-size: var(--text-sm);
}

.catalog-layout {
    display: grid;
    grid-template-columns: minmax(14rem, 17rem) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
}

.catalog-sidebar {
    min-width: 0;
}

.catalog-filter {
    border-top: var(--border);
}

.catalog-filter summary {
    display: flex;
    min-height: 3.5rem;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    color: var(--color-ink);
    cursor: pointer;
    font-size: var(--text-sm);
    font-weight: 600;
    list-style: none;
}

.catalog-filter summary::-webkit-details-marker {
    display: none;
}

.catalog-filter[open] summary > span:last-child {
    transform: rotate(45deg);
}

.catalog-filter summary > span:last-child {
    color: var(--color-accent-ink);
    font-size: var(--text-lg);
    font-weight: 400;
    transition: transform var(--transition);
}

.catalog-filter__body {
    padding-bottom: var(--space-6);
}

.catalog-filter ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.catalog-filter a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding-block: var(--space-3);
    color: var(--color-muted);
    border-bottom: var(--border);
    font-size: var(--text-sm);
    text-decoration: none;
}

.catalog-filter a:hover,
.catalog-filter a.active {
    color: var(--color-primary);
}

.catalog-filter__all {
    border-top: var(--border);
}

.catalog-filter__empty {
    margin: var(--space-4) 0 0;
    color: var(--color-muted);
    font-size: var(--text-sm);
}

.catalog-featured {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: var(--border);
}

.catalog-featured h2 {
    margin: 0 0 var(--space-4);
    font-size: var(--text-sm);
}

.catalog-featured article {
    display: grid;
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: var(--space-3);
    align-items: center;
    padding-block: var(--space-3);
    border-bottom: var(--border);
}

.catalog-featured img {
    width: 4.5rem;
    height: 4.5rem;
    object-fit: cover;
    background: var(--color-soft);
}

.catalog-featured a {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.4;
    text-decoration: none;
}

.catalog-featured p {
    margin: var(--space-1) 0 0;
    color: var(--color-muted);
    font-size: var(--text-xs);
}

.catalog-results {
    min-width: 0;
}

.catalog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.catalog-empty {
    display: grid;
    grid-template-columns: 8rem minmax(0, 1fr);
    gap: var(--space-8);
    align-items: center;
    min-height: 22rem;
    padding: var(--space-10);
    border: var(--border);
    background: var(--color-surface);
}

.catalog-empty__mark {
    display: flex;
    height: 8rem;
    align-items: flex-end;
    justify-content: center;
    gap: var(--space-2);
    background: var(--color-soft);
}

.catalog-empty__mark span {
    width: 1rem;
    background: var(--color-primary);
}

.catalog-empty__mark span:nth-child(1) { height: 36%; background: var(--color-accent); }
.catalog-empty__mark span:nth-child(2) { height: 66%; }
.catalog-empty__mark span:nth-child(3) { height: 48%; background: var(--color-muted); }

.catalog-empty h3 {
    margin: 0;
    font-size: var(--text-lg);
}

.catalog-empty > div:last-child > p:not(.section-heading__eyebrow) {
    max-width: 42rem;
    margin: var(--space-3) 0 var(--space-6);
    color: var(--color-muted);
}

.catalog-pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-10);
}

.catalog-pagination a,
.catalog-pagination span {
    display: grid;
    min-width: 2.75rem;
    min-height: 2.75rem;
    place-items: center;
    padding: var(--space-2);
    color: var(--color-ink);
    border: var(--border);
    background: var(--color-surface);
    font-size: var(--text-sm);
    text-decoration: none;
}

.catalog-pagination a:hover,
.catalog-pagination a.active {
    color: var(--color-on-dark);
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.catalog-pagination .catalog-pagination__direction {
    padding-inline: var(--space-4);
}

.catalog-pagination .disabled {
    color: var(--color-disabled);
    background: var(--color-disabled-bg);
    opacity: 1;
}

/* Footer */
.site-footer {
    padding-top: var(--space-16);
    color: rgba(255, 255, 255, 0.7);
    background: var(--color-ink);
}

.site-footer__grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
    padding-bottom: var(--space-16);
}

.site-footer__brand {
    grid-column: span 5;
    max-width: 30rem;
}

.site-brand--footer {
    color: var(--color-on-dark);
}

.site-brand--footer {
    align-items: flex-start;
    flex-direction: column;
}

.site-brand--footer .site-brand__logo {
    width: 176px;
}

.site-brand--footer .site-brand__text small {
    color: var(--color-on-dark-muted);
}

.site-footer__brand > p {
    margin: var(--space-6) 0 0;
}

.site-footer__nav {
    grid-column: 7 / span 2;
}

.site-footer__contact {
    grid-column: 10 / span 3;
}

.site-footer h2 {
    margin: 0 0 var(--space-5);
    color: var(--color-on-dark);
    font-size: var(--text-sm);
    font-weight: 600;
}

.site-footer__nav a,
.site-footer__contact a {
    display: block;
    width: fit-content;
    margin-bottom: var(--space-3);
    color: inherit;
    font-size: var(--text-sm);
    text-decoration: none;
}

.site-footer__nav a:hover,
.site-footer__contact a:hover {
    color: var(--color-on-dark);
}

.site-footer__contact p {
    margin: var(--space-5) 0 0;
    font-size: var(--text-sm);
}

.site-footer__bottom {
    display: flex;
    justify-content: space-between;
    gap: var(--space-6);
    padding-block: var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    font-size: var(--text-xs);
}

.site-footer__bottom p {
    margin: 0;
}

.back-to-top {
    position: fixed;
    z-index: 900;
    right: var(--space-5);
    bottom: var(--space-5);
    display: grid;
    width: 3rem;
    height: 3rem;
    place-items: center;
    padding: 0;
    color: var(--color-on-dark);
    border: 0;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    box-shadow: var(--shadow-soft);
}

.back-to-top[hidden] {
    display: none;
}

.back-to-top svg {
    width: 1.25rem;
    fill: currentColor;
}

/* Compatibility for existing product and content pages in this UI phase. */
.page-header {
    position: relative;
    margin-top: 0 !important;
    color: var(--color-on-dark);
    background: var(--color-primary);
}

.product-catalog {
    background: var(--color-canvas);
}

.product-catalog .product-card,
.related-products .related-item {
    height: 100%;
    overflow: hidden;
    border: var(--border);
    border-radius: var(--radius-md) !important;
    background: var(--color-surface);
    transition: box-shadow var(--transition), transform var(--transition);
}

.product-catalog .product-card:hover,
.related-products .related-item:hover {
    box-shadow: var(--shadow-soft);
    transform: translateY(-2px);
}

.product-catalog .product-image,
.related-products .related-img {
    overflow: hidden;
    aspect-ratio: 1 / 1;
    background: var(--color-soft);
}

.product-catalog .product-image img,
.related-products .related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.pagination a {
    display: grid;
    min-width: 2.75rem;
    min-height: 2.75rem;
    place-items: center;
    padding: var(--space-2);
    color: var(--color-ink);
    border: var(--border);
    text-decoration: none;
}

.pagination a.active,
.pagination a:hover:not(.disabled) {
    color: var(--color-on-dark);
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.pagination a.disabled {
    pointer-events: none;
    opacity: 0.45;
}

.related-products .owl-stage {
    margin-block: var(--space-8);
}

.related-products .owl-nav button {
    min-width: 2.75rem;
    min-height: 2.75rem;
    color: var(--color-primary) !important;
    border: var(--border) !important;
    background: var(--color-surface) !important;
}

.form-control,
.form-select,
.input-group-text {
    min-height: 2.75rem;
    border-color: var(--color-border);
    border-radius: var(--radius-sm);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(26, 87, 154, 0.18);
}

/* Tablet: explicit 8-column behavior */
@media (max-width: 1024px) {
    .site-container {
        width: min(calc(100% - 2.5rem), var(--container));
    }

    .home-section {
        padding-block: var(--space-20);
    }

    .catalog-toolbar > div:first-child,
    .catalog-controls {
        grid-column: 1 / -1;
    }

    .catalog-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .home-hero__grid,
    .section-heading-row,
    .editorial-section,
    .brand-discovery,
    .contact-cta,
    .site-footer__grid {
        grid-template-columns: repeat(8, minmax(0, 1fr));
    }

    .home-hero__content {
        grid-column: span 4;
    }

    .home-hero__visual {
        grid-column: 5 / span 4;
    }

    .home-hero h1 {
        font-size: clamp(2.35rem, 5vw, 3.75rem);
    }

    .section-heading-row .section-heading {
        grid-column: span 5;
    }

    .section-heading-row__aside,
    .section-heading-row--commerce > .text-link {
        grid-column: 6 / span 3;
    }

    .purpose-grid,
    .commerce-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .purpose-card {
        min-height: 19rem;
    }

    .editorial-section__visual {
        grid-column: span 4;
    }

    .editorial-section__content {
        grid-column: 5 / span 4;
        padding-left: var(--space-5);
    }

    .brand-discovery .section-heading {
        grid-column: span 4;
    }

    .brand-discovery__criteria {
        grid-column: 5 / span 4;
    }

    .brand-discovery > .button {
        grid-column: span 2;
    }

    .contact-cta > div:first-child {
        grid-column: span 4;
    }

    .contact-cta__action {
        grid-column: 5 / span 4;
    }

    .site-footer__brand {
        grid-column: span 4;
    }

    .site-footer__nav {
        grid-column: 5 / span 2;
    }

    .site-footer__contact {
        grid-column: 7 / span 2;
    }
}

@media (max-width: 991.98px) {
    .site-header .navbar {
        min-height: 4.75rem;
        flex-wrap: wrap;
    }

    .site-header .navbar-collapse {
        width: 100%;
        padding: var(--space-3) 0 var(--space-6);
        border-top: var(--border);
    }

    .site-nav {
        gap: 0;
    }

    .site-nav .nav-link {
        min-height: 3rem;
        padding: 0.75rem 0;
    }

    .site-nav .nav-link::after {
        right: auto;
        bottom: 0.5rem;
        left: 0;
        width: 2.5rem;
    }

    .site-header__actions {
        margin-top: var(--space-3);
    }

    .catalog-layout {
        grid-template-columns: 1fr;
    }

    .catalog-filter {
        background: var(--color-surface);
        border: var(--border);
    }

    .catalog-filter summary,
    .catalog-filter__body {
        padding-inline: var(--space-5);
    }
}

/* Mobile: explicit 4-column behavior */
@media (max-width: 767.98px) {
    .site-container {
        width: min(calc(100% - 2rem), var(--container));
    }

    .site-header__utility-inner {
        min-height: 2.25rem;
        justify-content: center;
    }

    .site-header__utility p {
        display: none;
    }

    .home-section {
        padding-block: var(--space-16);
    }

    .catalog-hero {
        padding-block: var(--space-10);
    }

    .catalog-hero__grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .catalog-hero__grid > div,
    .catalog-hero__intro {
        grid-column: 1 / -1;
    }

    .catalog-hero h1 {
        font-size: clamp(2.25rem, 11vw, 3.5rem);
    }

    .catalog-hero__intro {
        margin-top: var(--space-3);
    }

    .catalog-section {
        padding-block: var(--space-10) var(--space-16);
    }

    .catalog-toolbar {
        display: block;
        margin-bottom: var(--space-6);
        padding-bottom: var(--space-6);
    }

    .catalog-controls {
        grid-template-columns: 1fr;
        margin-top: var(--space-6);
    }

    .catalog-layout {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .catalog-filter {
        background: var(--color-surface);
        border: var(--border);
    }

    .catalog-filter summary,
    .catalog-filter__body {
        padding-inline: var(--space-5);
    }

    .catalog-grid {
        grid-template-columns: 1fr;
    }

    .catalog-empty {
        grid-template-columns: 4rem minmax(0, 1fr);
        gap: var(--space-4);
        min-height: 0;
        padding: var(--space-5);
    }

    .catalog-empty__mark {
        height: 4rem;
    }

    .catalog-empty__mark span {
        width: 0.55rem;
    }

    .home-hero {
        padding-block: var(--space-10) var(--space-16);
    }

    .home-hero__grid,
    .section-heading-row,
    .editorial-section,
    .brand-discovery,
    .contact-cta,
    .site-footer__grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .home-hero__content,
    .home-hero__visual,
    .section-heading-row .section-heading,
    .section-heading-row__aside,
    .section-heading-row--commerce > .text-link,
    .editorial-section__visual,
    .editorial-section__content,
    .brand-discovery .section-heading,
    .brand-discovery__criteria,
    .brand-discovery > .button,
    .contact-cta > div:first-child,
    .contact-cta__action,
    .site-footer__brand,
    .site-footer__nav,
    .site-footer__contact {
        grid-column: 1 / -1;
    }

    .home-hero__content {
        padding-block: 0 var(--space-6);
    }

    .home-hero h1 {
        font-size: clamp(2.25rem, 11vw, 3.5rem);
    }

    .home-hero__lead {
        font-size: var(--text-base);
    }

    .home-hero__principles {
        margin-top: var(--space-8);
    }

    .home-hero__principles dd {
        font-size: var(--text-xs);
    }

    .home-hero__visual {
        margin-top: var(--space-4);
    }

    .home-hero__visual::before {
        right: -1rem;
        left: 28%;
    }

    .home-hero__visual figcaption {
        right: var(--space-3);
        bottom: var(--space-3);
        left: var(--space-3);
        display: grid;
    }

    .section-heading-row {
        margin-bottom: var(--space-8);
    }

    .section-heading-row__aside {
        margin-top: 0;
    }

    .section-heading-row--commerce > .text-link {
        justify-self: start;
    }

    .purpose-grid,
    .commerce-grid {
        grid-template-columns: 1fr;
    }

    .purpose-card {
        min-height: 0;
        grid-template-columns: 7.5rem minmax(0, 1fr);
        grid-template-rows: 1fr;
    }

    .purpose-card__visual {
        min-height: 8rem;
        border-right: var(--border);
        border-bottom: 0;
    }

    .purpose-card__content {
        padding: var(--space-5);
    }

    .empty-state {
        grid-template-columns: 4rem minmax(0, 1fr);
        gap: var(--space-4);
        padding: var(--space-5);
    }

    .empty-state__mark {
        height: 4rem;
    }

    .editorial-section__visual {
        min-height: 27rem;
        padding: var(--space-6);
    }

    .editorial-section__sample {
        width: 6rem;
        height: 8.5rem;
    }

    .editorial-section__visual p {
        right: var(--space-6);
        bottom: var(--space-6);
        left: var(--space-6);
    }

    .editorial-section__content {
        padding: var(--space-8) 0 0;
    }

    .brand-discovery__criteria {
        margin-top: var(--space-4);
    }

    .contact-cta {
        padding: var(--space-8) var(--space-6);
    }

    .home-contact-wrap {
        width: 100%;
        margin-bottom: 0;
    }

    .site-footer__grid {
        gap: var(--space-10);
    }

    .site-footer__bottom {
        flex-direction: column;
        gap: var(--space-2);
    }
}

@media (max-width: 390px) {
    .site-brand__text small {
        display: none;
    }

    .home-hero .button,
    .contact-cta .button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

.commerce-card__quote { color: var(--color-primary); font-weight: 700; text-decoration: none; }

/* Catalog detail uses the same Design System 2026 tokens as listing and cards. */
.paint-detail__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,64px);padding-top:48px;padding-bottom:64px}.paint-gallery figure{margin:0;background:var(--color-surface);border:1px solid var(--color-border)}.paint-gallery figure>img{width:100%;height:auto;aspect-ratio:1;object-fit:contain}.paint-gallery figcaption{padding:16px;color:var(--color-muted);font-size:14px}.paint-gallery__thumbs{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.paint-gallery__thumbs button{border:1px solid var(--color-border);background:white;padding:4px}.paint-detail__info h1{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.3;margin:16px 0 24px}.paint-detail__info a:not(.button){color:var(--color-primary)}.paint-packages{margin:28px 0 16px}.paint-packages legend{font-size:1rem;font-weight:600}.paint-packages>div{display:flex;gap:8px;flex-wrap:wrap}.paint-packages button{min-height:48px;padding:10px 18px;background:white;color:var(--color-primary);border:1px solid var(--color-primary);border-radius:4px}.paint-packages button.active{background:var(--color-primary);color:white}.paint-detail__note{border-top:1px solid var(--color-border);margin-top:32px;padding-top:24px}.paint-detail__note h2{font-size:1.15rem}.paint-detail p,.paint-detail h1{overflow-wrap:anywhere}.catalog-controls{flex-wrap:wrap}.catalog-sort select{max-width:220px}.paint-detail #selectedPackageContext{color:var(--color-ink)}
@media(max-width:767px){.paint-detail__grid{grid-template-columns:1fr;padding-top:24px;padding-bottom:32px}.paint-gallery{max-width:480px;width:100%;margin:auto}.catalog-sort select{max-width:100%}}

.brand-links{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}
.brand-discovery .brand-links { grid-column: 1 / span 6; }
.brand-discovery__criteria { grid-row: 1 / span 3; }
@media (max-width: 1024px) { .brand-discovery .brand-links { grid-column: 1 / span 4; } }
@media (max-width: 767px) { .brand-discovery .brand-links { grid-column: 1 / -1; } .brand-discovery__criteria { grid-row: auto; } }

/* Brand interaction contract, including Bootstrap compatibility on public pages. */
h1, h2, h3, h4, h5, h6 { color: var(--color-ink); font-family: var(--font-sans); }
main a:not(.button):not(.commerce-card__link):not(.catalog-pagination a) { text-underline-offset: 0.2em; }
main .container a:not(.button) { color: var(--color-primary); }
a:hover { text-decoration-thickness: 0.12em; }
.text-link:hover, .commerce-card__quote:hover { color: var(--color-primary-dark); text-decoration: underline; }
.text-link:active, .commerce-card__quote:active { color: var(--color-primary-active); }
.button--light:active { background: var(--color-border); }
.button--on-dark:active { background: rgba(255, 255, 255, 0.16); }
.catalog-search button:active { background: var(--color-primary-active); }
.header-search:hover, .mobile-nav-toggle:hover { border-color: var(--color-primary); background: var(--color-soft); }
.mobile-nav-toggle:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; box-shadow: none; }
.catalog-search, .catalog-sort, .form-control, .form-select { border-color: var(--color-control-border); }
.catalog-search input { border-color: var(--color-control-border); }
.form-control, .form-select { color: var(--color-ink); background-color: var(--color-surface); }
.form-control:disabled, .form-select:disabled { color: var(--color-disabled); background-color: var(--color-disabled-bg); }
input::placeholder, textarea::placeholder { color: var(--color-muted); opacity: 1; }
.site-footer, .site-header__utility, .contact-cta, .editorial-section__visual, .svc-root, .page-header {
    --color-focus: #ffffff;
}
.site-footer { color: var(--color-on-dark-muted); }
.site-footer a:hover, .site-footer a:active { color: var(--color-on-dark); text-decoration: underline; }
.editorial-section__visual h2, .contact-cta h2 { color: var(--color-on-dark); }
.page-header .breadcrumb a { color: var(--color-on-dark); }
.paint-packages button:hover { background: var(--color-soft); border-color: var(--color-primary-dark); }
.paint-packages button.active:hover, .paint-packages button:active { color: var(--color-on-dark); background: var(--color-primary-active); }
.paint-gallery__thumbs button[aria-pressed="true"] { border: 2px solid var(--color-primary); }
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-accent-ink) !important; }
.bg-primary { background-color: var(--color-primary) !important; }
.border-primary { border-color: var(--color-primary) !important; }
.btn-primary { color: var(--color-on-dark); border-color: var(--color-primary); background: var(--color-primary); }
.btn-primary:hover { color: var(--color-on-dark); border-color: var(--color-primary-dark); background: var(--color-primary-dark); }
.btn-primary:active { background: var(--color-primary-active); }
.button:disabled:hover, .button[aria-disabled="true"]:hover, button:disabled:hover {
    color: var(--color-disabled); background: var(--color-disabled-bg); transform: none;
}
.alert-success { color: var(--color-primary-active); background: var(--color-soft); border-color: var(--color-primary); }
.alert-danger { color: var(--color-accent-ink); background: var(--color-surface); border-color: var(--color-accent); }
.error-page { min-height: 100vh; display: grid; align-items: center; background: var(--color-soft); }
.error-page__content { max-width: 48rem; padding-block: var(--space-16); }
.error-page .site-brand { margin-bottom: var(--space-12); }
.error-page h1 { font-size: var(--text-2xl); line-height: 1.15; }
.error-page__content > p:not(.section-heading__eyebrow) { color: var(--color-muted); margin-block: var(--space-6); }
@media (max-width: 767px) {
    .site-header .site-brand__logo { width: 80px; }
    .site-header .site-brand { gap: var(--space-2); }
    .site-header .site-brand__text strong { font-size: 0.875rem; letter-spacing: -0.02em; }
    .site-header .site-brand__text small { font-size: 0.6rem; letter-spacing: 0; }
}

/* UI-5: shared editorial, discovery, inquiry and utility presentation. */
.content-section { padding-block: clamp(3rem, 6vw, 5rem); }
.content-section--muted { background: var(--color-soft); border-block: var(--border); }
.page-hero h1 { font-size: clamp(2.1rem, 4vw, 3.75rem); line-height: 1.15; }
.section-spacing { margin-top: var(--space-10); }
.editorial-copy { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 6rem); }
.editorial-copy h2, .contact-channels h2 { font-size: var(--text-xl); line-height: 1.25; letter-spacing: -0.035em; }
.editorial-copy p:not(.section-heading__eyebrow), .contact-channels > p:not(.section-heading__eyebrow) { color: var(--color-muted); }
.principle-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: var(--space-8); padding: 0; margin: var(--space-10) 0 0; list-style: none; }
.principle-grid li { padding-top: var(--space-6); border-top: 2px solid var(--color-border); }
.principle-grid span { color: var(--color-accent-ink); font-size: var(--text-sm); font-weight: 700; }
.principle-grid h3 { margin-block: var(--space-5) var(--space-3); font-size: var(--text-lg); }
.principle-grid p { margin: 0; color: var(--color-muted); }
.discovery-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: var(--space-6); }
.hp-brand-links { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-block: var(--space-6); }
.hp-catalog-discovery .button-row { gap: var(--space-6); flex-wrap: wrap; }
.discovery-card { display: flex; flex-direction: column; align-items: flex-start; padding: var(--space-8); border: var(--border); background: var(--color-surface); }
.discovery-card h2 { font-size: var(--text-lg); overflow-wrap: anywhere; margin-bottom: var(--space-8); }
.discovery-card .text-link { margin-top: auto; min-height: 2.75rem; }
.category-context { color: var(--color-muted); max-width: 48rem; }
.category-intro { padding-top: var(--space-6); }
.contact-layout { display: grid; grid-template-columns: minmax(14rem, 0.8fr) minmax(0, 1.4fr); gap: clamp(2rem,6vw,6rem); align-items: start; }
.contact-channels > p { max-width: 25rem; }
.contact-channel { display: grid; gap: var(--space-2); padding-block: var(--space-6); margin-block: var(--space-2); border-block-start: var(--border); text-decoration: none; }
.contact-channel span, .contact-channel small { color: var(--color-muted); font-size: var(--text-sm); }
.contact-channel strong { font-size: var(--text-lg); color: var(--color-primary); }
.contact-channel:hover strong { text-decoration: underline; }
.contact-channels > .text-link { min-height: 2.75rem; }
.contact-form-panel { min-width: 0; padding: clamp(1.25rem,3vw,2.5rem); border: var(--border); background: var(--color-soft); }
.inquiry-form { display: grid; gap: var(--space-5); }
.inquiry-form h2, .quote-context h2, .form-notice h2 { font-size: var(--text-lg); line-height: 1.35; margin: 0; }
.inquiry-form > p { margin: 0; color: var(--color-muted); }
.form-pair { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.form-field { min-width: 0; }
.form-field label { display: block; margin-bottom: var(--space-2); font-size: var(--text-sm); font-weight: 600; }
.form-field .form-control { width: 100%; padding: var(--space-3); min-height: 3rem; }
.form-field textarea { min-height: 10rem; resize: vertical; }
.form-field [aria-invalid="true"] { border: 2px solid var(--color-accent-ink); }
.field-error { margin: var(--space-2) 0 0; font-size: var(--text-sm); color: var(--color-accent-ink); }
.quote-context { padding-bottom: var(--space-6); margin-bottom: var(--space-8); border-bottom: var(--border); }
.quote-context .text-link { margin-top: var(--space-3); min-height: 2.75rem; }
.form-notice { padding: var(--space-5); margin-bottom: var(--space-8); border-left: 3px solid var(--color-primary); background: var(--color-surface); }
.form-notice p { margin-block: var(--space-3); }
.form-notice--error { border-color: var(--color-accent-ink); color: var(--color-accent-ink); margin: 0; }
.form-notice--error h3 { font-size: var(--text-md); color: inherit; }
.form-notice--error ul { margin-bottom: 0; }
.catalog-breadcrumb { align-items: center; }
.catalog-breadcrumb a { display: inline-flex; min-height: 2rem; align-items: center; }
.catalog-page .catalog-results { min-width: 0; }
.catalog-toolbar h2, .catalog-breadcrumb span, .error-content h1 { overflow-wrap: anywhere; min-width: 0; }
.catalog-controls { display: flex; gap: var(--space-3); align-items: stretch; }
.catalog-controls .catalog-search { flex: 1 1 18rem; }
.catalog-controls .catalog-sort { flex: 1 1 12rem; }
.catalog-controls .catalog-sort select { width: 100%; max-width: none; }
.catalog-apply { min-height: 3rem; }
.catalog-filter__all { min-height: 2.75rem; }
.filter-state { color: var(--color-muted); margin: 0 0 var(--space-6); }
.catalog-pagination .pagination-gap { display: grid; min-width: 2rem; place-items: center; color: var(--color-muted); }
.commerce-card h3 a { display: inline-block; padding-block: var(--space-2); }
.commerce-card__category, .commerce-card__quote { display: inline-flex; align-items: center; min-height: 2.75rem; }
.site-footer__nav a, .site-footer__contact a { min-height: 2rem; padding-block: var(--space-1); margin-bottom: var(--space-2); }
.site-footer__bottom { padding-inline-end: 4.5rem; }
.site-footer__bottom > a { color: inherit; min-height: 2rem; }
.site-header__utility a { display: inline-flex; align-items: center; min-height: 2.5rem; }
.error-content { min-height: 55vh; }
.error-content h1 { max-width: 50rem; font-size: var(--text-2xl); line-height: 1.15; }
.error-content > p:not(.section-heading__eyebrow) { color: var(--color-muted); max-width: 44rem; margin-block: var(--space-6) var(--space-8); }
.detail-breadcrumb { background: var(--color-soft); border-bottom: var(--border); padding-block: var(--space-5); }
.detail-breadcrumb .catalog-breadcrumb { margin: 0; }
.detail-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: clamp(2rem,5vw,4rem); padding-block: clamp(2rem,5vw,4rem); align-items: start; }
.detail-info h1 { font-size: clamp(1.75rem,3vw,2.75rem); line-height: 1.25; letter-spacing: -0.035em; overflow-wrap: anywhere; }
.detail-info a:not(.button) { color: var(--color-primary); }
.detail-identity { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-block: var(--space-5); }
.detail-identity a { min-height: 2.75rem; display: inline-flex; align-items: center; }
.detail-quote { font-weight: 700; font-size: var(--text-lg); margin-block: var(--space-6) var(--space-3); }
.detail-muted, .detail-note p { color: var(--color-muted); }
.detail-note { margin-top: var(--space-8); padding-top: var(--space-6); border-top: var(--border); }
.detail-note h2 { font-size: var(--text-md); }
.paint-gallery__thumbs button { min-width: 3rem; min-height: 3rem; }
.paint-gallery__thumbs img { width: 72px; height: 72px; object-fit: contain; }
.commerce-card__media img { object-fit: contain; }
@media (max-width: 1024px) { .discovery-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 767px) {
    .editorial-copy, .contact-layout, .principle-grid, .detail-grid { grid-template-columns: 1fr; }
    .discovery-grid { grid-template-columns: 1fr; }
    .principle-grid { gap: var(--space-6); }
    .form-pair { grid-template-columns: 1fr; }
    .catalog-controls .catalog-search, .catalog-controls .catalog-sort { flex-basis: 100%; }
    .catalog-controls .button { width: 100%; }
    .contact-form-panel { padding: var(--space-5); }
    .paint-gallery { max-width: 30rem; width: 100%; margin-inline: auto; }
    .detail-info .button-row .button { width: 100%; }
}

/* Header: one navigation group between brand and actions. */
.site-header .navbar{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;min-height:80px;gap:24px}
.site-header .site-brand__logo{width:60px}.site-header .site-brand__text strong{font-size:.9rem}.site-header .site-brand__text small{font-size:.55rem}
.site-header .navbar-collapse{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:20px;min-width:0}
.site-header .site-nav{display:flex;flex-direction:row;justify-content:center;align-items:center;gap:4px;margin:0;min-width:0}
.site-header .site-nav .nav-link{display:flex;align-items:center;gap:6px;min-height:48px;padding:12px 8px;font-size:.8rem;font-weight:500;line-height:1.4;color:var(--color-muted);white-space:nowrap;text-decoration:none}
.site-header .site-nav .nav-link:hover,.site-header .site-nav .nav-link[aria-current=page],.site-header .site-nav .nav-link.active,.site-header .bc-trigger[aria-expanded=true]{color:var(--color-primary);background:var(--color-soft);border-radius:4px}
.site-header .site-nav .nav-link::after{display:none}.site-header__actions{margin:0;gap:12px;white-space:nowrap}.site-header__actions .button{padding-inline:16px}.mobile-quote{display:none}.mobile-nav-toggle{display:none}
@media(max-width:1199px){
 .site-header .navbar{grid-template-columns:minmax(0,1fr) auto auto;gap:12px;min-height:80px}.site-header .navbar-collapse{grid-column:1/-1;width:100%;padding:16px 0 20px;border-top:var(--border);display:block}.site-header .navbar-collapse:not(.show){display:none}.site-header .site-nav{display:flex;flex-direction:column;align-items:stretch;gap:4px}.site-header .site-nav .nav-link{padding:12px;min-height:48px;justify-content:space-between}.site-header .site-brand__text strong{font-size:.9rem}.site-header .site-brand__text small{font-size:.55rem}.site-header .mobile-nav-toggle{display:flex;flex-direction:column;gap:4px;align-items:center;justify-content:center}.site-header .mobile-quote{display:inline-flex;margin:0}.site-header__actions{margin-top:16px}.site-header__actions>.button{display:none}.site-header .header-search{width:100%;display:flex;justify-content:center;gap:12px}.site-header .header-search::after{content:'Tìm kiếm sản phẩm';font-size:.85rem}
}
@media(max-width:600px){.site-header .site-brand__logo{width:56px}.site-header .site-brand__text{display:none}.site-header .mobile-quote{font-size:.75rem;padding-inline:14px}.site-header .navbar{min-height:76px;gap:10px}}

@media(max-width:1199px){body.client-nav-open{overflow:hidden}.site-header:has(.navbar-collapse.show){position:sticky;top:0;max-height:100svh;overflow-y:auto;overscroll-behavior:contain}.site-header .navbar-collapse.show{max-height:calc(100svh - 80px);overflow-y:auto}}