/* ==========================================================================
   LỤA XƯA — Landing Page
   Phong cách: Nhà Lụa (e-commerce áo dài cao cấp)
   ========================================================================== */

:root {
  /* ---- Colors: Kem trầm Việt cổ điển ---- */
  --c-bg: #FFFFFF;
  --c-cream: #FAF6F0;
  --c-cream-deep: #F2EBDC;
  --c-ivory: #F7F2E7;
  --c-mist: #E8DFCE;

  --c-burgundy: #6B1F2C;
  --c-burgundy-deep: #4A141E;
  --c-red: #A23340;
  --c-gold: #B8925A;
  --c-gold-light: #D4AA75;

  --c-ink: #2B1F18;
  --c-text: #3A2E26;
  --c-text-soft: #6E5E51;
  --c-border: #E5DCC9;

  /* ---- Typography ---- */
  /* Noto Serif: serif chuẩn Google, render tiếng Việt hoàn hảo */
  /* Be Vietnam Pro: sans-serif thiết kế riêng cho tiếng Việt */
  --font-display: "Noto Serif", Georgia, "Times New Roman", serif;
  --font-italic: "Noto Serif", Georgia, "Times New Roman", serif;
  --font-body: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* ---- Layout ---- */
  --max-w: 1280px;
  --gutter: clamp(1rem, 3vw, 2rem);
  --section-pad-y: clamp(4rem, 8vw, 7rem);

  /* ---- Shadows ---- */
  --shadow-sm: 0 2px 8px rgba(43, 31, 24, 0.06);
  --shadow-md: 0 8px 24px rgba(43, 31, 24, 0.08);
  --shadow-lg: 0 20px 50px rgba(43, 31, 24, 0.12);
}

/* ==========================================================================
   RESET
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Đảm bảo dấu tiếng Việt render đúng, không bị tách rời */
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  text-rendering: optimizeLegibility;
}

img, picture, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

::selection { background: var(--c-burgundy); color: var(--c-ivory); }

em {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 500;
}

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container--narrow {
  max-width: 1080px;
}

.section {
  padding: var(--section-pad-y) 0;
}

.section__head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 4rem;
}

.section__eyebrow {
  display: block;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-burgundy);
  margin-bottom: 1.25rem;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--c-ink);
  margin-bottom: 1rem;
}

.section__lead {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--c-text-soft);
  line-height: 1.6;
}

.section__footer {
  text-align: center;
  margin-top: 3rem;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  cursor: pointer;
  border: 1px solid transparent;
  line-height: 1;
}

.btn--primary {
  background: var(--c-burgundy);
  color: var(--c-ivory);
}
.btn--primary:hover {
  background: var(--c-burgundy-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--c-burgundy);
  border-color: var(--c-burgundy);
}
.btn--outline:hover {
  background: var(--c-burgundy);
  color: var(--c-ivory);
}

.btn--outline-white {
  color: var(--c-ivory);
  border-color: var(--c-ivory);
}
.btn--outline-white:hover {
  background: var(--c-ivory);
  color: var(--c-burgundy);
}

.btn--link {
  padding: 0.5rem 0;
  background: transparent;
  color: var(--c-burgundy);
  border-bottom: 1px solid var(--c-burgundy);
  border-radius: 0;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}
.btn--link:hover {
  color: var(--c-burgundy-deep);
  border-color: var(--c-burgundy-deep);
  gap: 0.8rem;
}

/* ==========================================================================
   ANNOUNCEMENT BAR
   ========================================================================== */
.announce {
  background: var(--c-burgundy);
  color: var(--c-ivory);
  padding: 0.6rem 0;
  overflow: hidden;
  border-bottom: 1px solid var(--c-burgundy-deep);
}

.announce__track {
  display: flex;
  gap: 3rem;
  white-space: nowrap;
  animation: marquee 50s linear infinite;
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.announce__dot {
  color: var(--c-gold-light);
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.header__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.25rem var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}

.header__nav {
  display: flex;
  gap: 2.25rem;
  align-items: center;
}

.header__nav--left { justify-content: flex-end; }
.header__nav--right { justify-content: flex-start; }

.header__nav a {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text);
  transition: color 0.2s;
  position: relative;
}
.header__nav a:hover { color: var(--c-burgundy); }

.header__nav a:not(.header__cta)::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--c-burgundy);
  transition: all 0.3s;
  transform: translateX(-50%);
}
.header__nav a:not(.header__cta):hover::after { width: 100%; }

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  background: var(--c-burgundy);
  color: var(--c-ivory) !important;
  border-radius: 2px;
  transition: background 0.2s;
}
.header__cta:hover { background: var(--c-burgundy-deep); }
.header__cta::after { display: none; }

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-direction: column;
  text-align: center;
}

.header__logo-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--c-burgundy);
  color: var(--c-burgundy);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.05em;
  border-radius: 50%;
  background: var(--c-cream);
}

.header__logo-text {
  line-height: 1.1;
}

.header__logo-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--c-ink);
}

.header__logo-sub {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 0.7rem;
  color: var(--c-text-soft);
  letter-spacing: 0.05em;
  margin-top: 2px;
}

.header__burger {
  display: none;
  width: 28px;
  height: 20px;
  flex-direction: column;
  justify-content: space-between;
}
.header__burger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--c-ink);
  transition: all 0.3s;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--c-cream);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__image {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 70% 40%, rgba(212, 170, 117, 0.4) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(107, 31, 44, 0.5) 0%, transparent 55%),
    linear-gradient(135deg, #8E3440 0%, #6B1F2C 40%, #4A141E 100%);
  position: relative;
}
.hero__image::after {
  content: "✻ Thay ảnh áo dài chủ đề tại đây ✻";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: rgba(247, 242, 231, 0.4);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(43, 31, 24, 0.15) 0%, rgba(43, 31, 24, 0.5) 100%),
    radial-gradient(ellipse at center, transparent 20%, rgba(43, 31, 24, 0.45) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 780px;
  padding: 6rem var(--gutter) 4rem;
  color: var(--c-ivory);
}

.hero__eyebrow {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-gold-light);
  margin-bottom: 2rem;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  margin-bottom: 1.75rem;
}

.hero__title-line {
  display: block;
  font-size: clamp(2.25rem, 6.5vw, 4.75rem);
}

.hero__title-line--italic {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--c-gold-light);
  margin: 0.1em 0;
}

.hero__title-line--italic em {
  font-size: 1.2em;
  font-weight: 500;
}

.hero__desc {
  font-size: 1.02rem;
  line-height: 1.8;
  color: rgba(247, 242, 231, 0.88);
  margin-bottom: 2.5rem;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__cta .btn--primary {
  background: var(--c-gold);
  color: var(--c-ink);
}
.hero__cta .btn--primary:hover {
  background: var(--c-gold-light);
}

.hero__cta .btn--outline {
  color: var(--c-ivory);
  border-color: var(--c-ivory);
}
.hero__cta .btn--outline:hover {
  background: var(--c-ivory);
  color: var(--c-burgundy);
}

/* ==========================================================================
   PRODUCTS GRID
   ========================================================================== */
.section--products {
  background: var(--c-cream);
}

.products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.product {
  position: relative;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.product:hover { transform: translateY(-4px); }

.product__media {
  display: block;
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--c-ivory);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.4s;
  cursor: pointer;
}
.product:hover .product__media {
  box-shadow: var(--shadow-lg);
}

.product__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.product:hover .product__media img { transform: scale(1.05); }

.product__badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.35rem 0.8rem;
  background: var(--c-cream);
  color: var(--c-burgundy);
  font-family: var(--font-italic);
  font-size: 0.78rem;
  font-style: italic;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: 2px;
  z-index: 2;
  border: 1px solid var(--c-gold);
}
.product__badge--sale {
  background: var(--c-burgundy);
  color: var(--c-ivory);
  border-color: var(--c-burgundy);
  font-family: var(--font-body);
  font-style: normal;
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.product__body {
  padding: 0 0.25rem;
}

.product__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--c-ink);
  margin-bottom: 0.5rem;
  min-height: 2.8em;
}
.product__name a {
  color: inherit;
  transition: color 0.25s;
}
.product:hover .product__name a { color: var(--c-burgundy); }

.product__price {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.product__price-sale {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-burgundy);
}

.product__price-original {
  font-size: 0.88rem;
  color: var(--c-text-soft);
  text-decoration: line-through;
}

/* ==========================================================================
   COLLECTIONS
   ========================================================================== */
.section--collections {
  background: var(--c-bg);
}

.collections {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.collection-card {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.collection-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.collection-card__image {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.collection-card:hover .collection-card__image { transform: scale(1.07); }

/* BST color placeholders */
.collection-card__image[data-bst="duxuan"] {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(255, 255, 255, 0.4), transparent 55%),
    linear-gradient(160deg, #F5D4A8 0%, #C88B5C 70%, #8F5C2D 100%);
}
.collection-card__image[data-bst="hoaxuan"] {
  background:
    radial-gradient(ellipse at 35% 25%, rgba(255, 255, 255, 0.35), transparent 55%),
    linear-gradient(160deg, #E0B8C8 0%, #B47A93 60%, #7F4861 100%);
}
.collection-card__image[data-bst="pho"] {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(212, 170, 117, 0.3), transparent 55%),
    linear-gradient(160deg, #6B7F45 0%, #4F6030 60%, #2F3E1C 100%);
}
.collection-card__image[data-bst="honviet"] {
  background:
    radial-gradient(ellipse at 30% 20%, rgba(255, 220, 150, 0.35), transparent 55%),
    linear-gradient(160deg, #8E3440 0%, #6B1F2C 60%, #3E0F18 100%);
}

.collection-card__body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1.5rem 1.5rem;
  color: var(--c-ivory);
  background: linear-gradient(to top, rgba(43, 31, 24, 0.85) 0%, rgba(43, 31, 24, 0.5) 60%, transparent 100%);
  z-index: 2;
}

.collection-card__num {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--c-gold-light);
  display: block;
  margin-bottom: 0.35rem;
}

.collection-card__name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin-bottom: 0.35rem;
}

.collection-card__desc {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 0.88rem;
  color: rgba(247, 242, 231, 0.8);
}

/* ==========================================================================
   CATEGORIES
   ========================================================================== */
.section--categories {
  background: var(--c-cream);
}

.categories {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.category {
  text-align: center;
  transition: transform 0.3s;
}
.category:hover { transform: translateY(-4px); }

.category__image {
  aspect-ratio: 3 / 4;
  margin-bottom: 1.25rem;
  background: var(--c-ivory);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.4s;
}
.category:hover .category__image { box-shadow: var(--shadow-md); }

.category__image[data-cat="aodai"] {
  background:
    radial-gradient(ellipse at 35% 25%, rgba(255, 255, 255, 0.35), transparent 55%),
    linear-gradient(160deg, #C85A6A 0%, #8E3440 60%, #5F1E29 100%);
}
.category__image[data-cat="setbo"] {
  background:
    radial-gradient(ellipse at 35% 25%, rgba(255, 255, 255, 0.4), transparent 55%),
    linear-gradient(160deg, #D8B882 0%, #B89460 60%, #80653A 100%);
}
.category__image[data-cat="phapphuc"] {
  background:
    radial-gradient(ellipse at 35% 25%, rgba(255, 255, 255, 0.4), transparent 55%),
    linear-gradient(160deg, #D0C5A8 0%, #A8997A 60%, #726447 100%);
}
.category__image[data-cat="khanlua"] {
  background:
    radial-gradient(ellipse at 35% 25%, rgba(255, 255, 255, 0.4), transparent 55%),
    linear-gradient(160deg, #9BB4B0 0%, #6E8D88 60%, #446762 100%);
}

.category__image::after {
  content: "Ảnh";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.category__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--c-ink);
  letter-spacing: 0.05em;
  transition: color 0.25s;
}
.category:hover .category__name { color: var(--c-burgundy); }

/* ==========================================================================
   STORY / LỜI NGỎ
   ========================================================================== */
.section--story {
  background: var(--c-bg);
  padding: calc(var(--section-pad-y) + 2rem) 0;
}

.story {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 5rem;
  align-items: center;
}

.story__image {
  position: relative;
  padding: 1rem;
  border: 1px solid var(--c-gold);
}
.story__image::before {
  content: "";
  position: absolute;
  inset: -1rem;
  border: 1px solid var(--c-gold-light);
  opacity: 0.3;
  pointer-events: none;
}

.story__image-inner {
  aspect-ratio: 4 / 5;
  background:
    radial-gradient(ellipse at 30% 30%, rgba(212, 170, 117, 0.4), transparent 55%),
    linear-gradient(160deg, #D9C7A5 0%, #8E3440 50%, #4A141E 100%);
  position: relative;
}
.story__image-inner::after {
  content: "Ảnh nghệ nhân Nha Xá";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(247, 242, 231, 0.5);
}

.story__text {
  text-align: center;
}

.story__ornament {
  font-size: 1.5rem;
  color: var(--c-gold);
  margin-bottom: 1rem;
  opacity: 0.8;
}
.story__ornament--bottom { margin-top: 2rem; margin-bottom: 0; }

.story__eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  margin-bottom: 1rem;
}

.story__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1;
  color: var(--c-ink);
  margin-bottom: 2.5rem;
}
.story__title em {
  color: var(--c-burgundy);
  font-size: 1em;
}

.story__quote {
  max-width: 500px;
  margin: 0 auto 2.5rem;
}

.story__quote p {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 1.25rem;
}

.story__quote strong {
  color: var(--c-burgundy);
  font-weight: 600;
  font-family: var(--font-display);
  font-style: normal;
}

/* ==========================================================================
   BLOG
   ========================================================================== */
.section--blog {
  background: var(--c-cream);
}

.blog {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.5rem;
}

.blog-post {
  background: var(--c-bg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.blog-post:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-post--featured {
  grid-row: span 2;
}

.blog-post__link {
  display: block;
  overflow: hidden;
  flex-shrink: 0;
}

.blog-post__image {
  aspect-ratio: 16 / 10;
  position: relative;
  overflow: hidden;
  background: var(--c-mist);
}
.blog-post--featured .blog-post__image {
  aspect-ratio: 4 / 3;
}

.blog-post__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.blog-post:hover .blog-post__image img {
  transform: scale(1.06);
}

.blog-post__body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-post__cat {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-burgundy);
  margin-bottom: 0.75rem;
}

.blog-post__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--c-ink);
  margin-bottom: 0.75rem;
  flex: 1;
}
.blog-post--featured .blog-post__title {
  font-size: 1.5rem;
}
.blog-post__title a {
  color: inherit;
  transition: color 0.25s;
}
.blog-post:hover .blog-post__title a { color: var(--c-burgundy); }

.blog-post__excerpt {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--c-text-soft);
  margin-bottom: 1rem;
}

.blog-post__more {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-burgundy);
  align-self: flex-start;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.25s;
}
.blog-post:hover .blog-post__more { border-bottom-color: var(--c-burgundy); }

/* ==========================================================================
   CTA BANNER
   ========================================================================== */
.cta-banner {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(212, 170, 117, 0.2), transparent 60%),
    linear-gradient(135deg, var(--c-burgundy) 0%, var(--c-burgundy-deep) 100%);
  color: var(--c-ivory);
  padding: 5rem var(--gutter);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
  opacity: 0.12;
  mix-blend-mode: overlay;
}

.cta-banner__inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.cta-banner__ornament {
  font-size: 2rem;
  color: var(--c-gold-light);
  margin-bottom: 1.5rem;
  animation: pulseSoft 3s ease-in-out infinite;
}

@keyframes pulseSoft {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}

.cta-banner__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.cta-banner__desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(247, 242, 231, 0.85);
  margin-bottom: 2.5rem;
}

.cta-banner__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-banner__buttons .btn--primary {
  background: var(--c-gold);
  color: var(--c-ink);
}
.cta-banner__buttons .btn--primary:hover {
  background: var(--c-gold-light);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: var(--c-ink);
  color: rgba(247, 242, 231, 0.72);
  padding: 4rem 0 1.5rem;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(247, 242, 231, 0.1);
}

.footer__col--brand {}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.footer__logo-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--c-gold);
  color: var(--c-gold-light);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 50%;
}

.footer__logo-text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--c-ivory);
}

.footer__tagline {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 1rem;
  color: var(--c-gold-light);
  margin-bottom: 2rem;
}

.footer__contact p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 0.7rem;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.footer__icon {
  color: var(--c-gold-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer__heading {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--c-ivory);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

.footer__links li {
  margin-bottom: 0.65rem;
}

.footer__links a {
  font-size: 0.9rem;
  color: rgba(247, 242, 231, 0.72);
  transition: color 0.2s;
}
.footer__links a:hover { color: var(--c-gold-light); }

.footer__social {
  display: flex;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.footer__social a {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(247, 242, 231, 0.25);
  color: rgba(247, 242, 231, 0.7);
  border-radius: 50%;
  transition: all 0.3s;
}
.footer__social a:hover {
  background: var(--c-gold);
  color: var(--c-ink);
  border-color: var(--c-gold);
  transform: translateY(-2px);
}

.footer__bottom {
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: rgba(247, 242, 231, 0.45);
}

.footer__bottom p:last-child {
  font-family: var(--font-italic);
  font-style: italic;
}

/* ==========================================================================
   FLOATING ZALO BUTTON
   ========================================================================== */
.float-zalo {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 40;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  background: #0068FF;
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(0, 104, 255, 0.4);
  transition: transform 0.3s, box-shadow 0.3s;
  animation: floatPulse 2.5s ease-in-out infinite;
}

.float-zalo:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 14px 32px rgba(0, 104, 255, 0.5);
}

@keyframes floatPulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(0, 104, 255, 0.4), 0 0 0 0 rgba(0, 104, 255, 0.6); }
  50% { box-shadow: 0 8px 24px rgba(0, 104, 255, 0.4), 0 0 0 12px rgba(0, 104, 255, 0); }
}

/* ==========================================================================
   REVEAL ANIMATION
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .products,
  .collections,
  .categories { grid-template-columns: repeat(3, 1fr); }

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

  .blog { grid-template-columns: 1fr 1fr; }
  .blog-post--featured { grid-row: span 1; grid-column: span 2; }

  .story { grid-template-columns: 1fr; gap: 3rem; }
  .story__image { max-width: 450px; margin: 0 auto; }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 820px) {
  .header__inner {
    grid-template-columns: auto 1fr auto;
    padding: 1rem var(--gutter);
  }
  .header__nav { display: none; }
  .header__burger { display: flex; }
  .header__logo { flex-direction: row; }
  .header__logo-sub { display: none; }

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

  .blog { grid-template-columns: 1fr; }
  .blog-post--featured { grid-column: span 1; }

  .hero__cta .btn,
  .cta-banner__buttons .btn {
    width: 100%;
    justify-content: center;
  }
  .hero__cta,
  .cta-banner__buttons { flex-direction: column; width: 100%; max-width: 340px; margin-left: auto; margin-right: auto; }
}

@media (max-width: 520px) {
  .announce__track { font-size: 0.68rem; gap: 2rem; }

  .hero { min-height: 70vh; }

  .products { grid-template-columns: 1fr; }
  .categories { grid-template-columns: 1fr 1fr; }

  .footer__top { grid-template-columns: 1fr; gap: 2rem; }

  .footer__bottom { flex-direction: column; text-align: center; gap: 0.5rem; }

  .float-zalo { right: 1rem; bottom: 1rem; width: 50px; height: 50px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .announce__track { animation: none; }
}