/* ============================================================
   YIUW DESALAN — Stylesheet
   ------------------------------------------------------------
   Brand colors:
     Navy:     #1E3A5F  (primary)
     Orange:   #F39C12  (accent)
     Cream:    #FAF7F2  (warm background)
     White:    #FFFFFF
     Charcoal: #1A1A1A
   ============================================================ */

/* ---------- 1. Variables & Reset ---------- */
:root {
  --navy: #1E3A5F;
  --navy-dark: #152a45;
  --navy-light: #2c4f7c;
  --orange: #F39C12;
  --orange-dark: #d98910;
  --cream: #FAF7F2;
  --light-gray: #F5F2EC;
  --border: #E8E2D6;
  --text: #1A1A1A;
  --text-soft: #555;
  --text-mute: #888;
  --white: #FFFFFF;

  --font-display: "Playfair Display", "Noto Serif SC", Georgia, serif;
  --font-body: "Manrope", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1240px;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(30, 58, 95, 0.06);
  --shadow: 0 8px 28px rgba(30, 58, 95, 0.10);
  --shadow-lg: 0 20px 50px rgba(30, 58, 95, 0.15);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}

body.lang-zh {
  --font-display: "Noto Serif SC", "Playfair Display", Georgia, serif;
  --font-body: "Noto Sans SC", "Manrope", -apple-system, sans-serif;
  line-height: 1.75;
}

body.nav-open { overflow: hidden; }

img { max-width: 100%; display: block; height: auto; }
a { color: var(--navy); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--orange); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy);
}
h1 { font-size: clamp(2.2rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); letter-spacing: -0.01em; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.1rem; }

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

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 18px;
}

.section { padding: 100px 0; }
.section-sm { padding: 60px 0; }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section-head h2 { margin-bottom: 16px; }
.section-head p { color: var(--text-soft); font-size: 1.05rem; }

/* ---------- 2. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 2px solid transparent;
  border-radius: 50px;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}
.btn-primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(243, 156, 18, 0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-secondary:hover {
  background: var(--navy);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-light {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}
.btn-light:hover {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-light:hover {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}

/* ---------- 3. Header / Navigation ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 14px 24px;
  max-width: var(--container);
  margin: 0 auto;
  gap: 24px;
}
.header-inner > .logo { justify-self: start; grid-column: 1; }
.header-inner > .main-nav { justify-self: center; grid-column: 2; }
.header-inner > .lang-switch-desktop { justify-self: end; grid-column: 3; }
.header-inner > .nav-toggle { justify-self: end; grid-column: 3; }
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo img { height: 48px; width: auto; }
.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--navy);
  line-height: 1;
}
@media (max-width: 600px) {
  .logo img { height: 40px; }
  .logo-text { display: none; }
}

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  position: relative;
  padding: 10px 18px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.02em;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 4px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.main-nav a:hover::after,
.main-nav a.active::after { transform: scaleX(1); }
.main-nav a.active { color: var(--orange); }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  margin-left: 12px;
  border: 1.5px solid var(--navy);
  border-radius: 50px;
  background: transparent;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  cursor: pointer;
  transition: all var(--transition);
}
.lang-switch:hover {
  background: var(--navy);
  color: var(--white);
}
.lang-switch svg { width: 14px; height: 14px; }
.lang-switch-desktop { margin-left: 0; }
.lang-switch-mobile { display: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  z-index: 1100;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  transition: all var(--transition);
  transform-origin: center;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 900px) {
  .header-inner {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }
  .header-inner > .logo { justify-self: start; grid-column: 1; }
  .header-inner > .nav-toggle { justify-self: end; grid-column: 2; }
  .lang-switch-desktop { display: none; }
  .lang-switch-mobile { display: inline-flex; margin: 24px 0 0; align-self: flex-start; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 0; right: -100%;
    width: min(320px, 80vw);
    height: 100vh;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 100px 32px 32px;
    background: var(--white);
    box-shadow: -10px 0 40px rgba(0,0,0,0.1);
    transition: right var(--transition);
    gap: 4px;
  }
  .main-nav.open { right: 0; }
  .main-nav a {
    padding: 14px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border);
  }
  .main-nav a::after { display: none; }
}

/* ---------- 4. Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background:
    linear-gradient(135deg, rgba(30, 58, 95, 0.85) 0%, rgba(30, 58, 95, 0.65) 60%, rgba(30, 58, 95, 0.45) 100%),
    url("https://images.unsplash.com/photo-1483985988355-763728e1935b?auto=format&fit=crop&w=2000&q=80") center/cover;
  color: var(--white);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  bottom: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(243, 156, 18, 0.25), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content {
  position: relative;
  max-width: 720px;
  z-index: 2;
}
.hero .eyebrow {
  color: var(--orange);
  opacity: 0.95;
}
.hero h1 {
  color: var(--white);
  margin-bottom: 24px;
  font-weight: 700;
}
.hero h1 .accent { color: var(--orange); font-style: italic; }
.hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 40px;
  max-width: 580px;
  line-height: 1.7;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; }

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ---------- 5. Categories ---------- */
.categories { background: var(--cream); }
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.cat-card {
  position: relative;
  height: 420px;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--navy);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.cat-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.cat-card .cat-image {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.8s ease;
}
.cat-card:hover .cat-image { transform: scale(1.08); }
.cat-card .cat-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(30, 58, 95, 0.92) 0%, rgba(30, 58, 95, 0.4) 50%, transparent 100%);
}
.cat-card .cat-content {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 28px;
  color: var(--white);
  z-index: 2;
}
.cat-card h3 {
  color: var(--white);
  margin-bottom: 8px;
  font-size: 1.6rem;
}
.cat-card p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  margin-bottom: 16px;
}
.cat-card .cat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--orange);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}
.cat-card .cat-link::after {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--orange);
  transition: width var(--transition);
}
.cat-card:hover .cat-link::after { width: 40px; }

/* ---------- 6. Why Us ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}
.why-card {
  text-align: center;
  padding: 32px 24px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.why-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: var(--shadow);
}
.why-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: var(--orange);
}
.why-icon svg { width: 28px; height: 28px; }
.why-card h4 { margin-bottom: 10px; color: var(--navy); }
.why-card p { color: var(--text-soft); font-size: 0.95rem; }

/* ---------- 7. About Preview ---------- */
.about-preview { background: var(--cream); }
.about-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-preview-img {
  position: relative;
  height: 480px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: url("https://images.unsplash.com/photo-1441986300917-64674bd600d8?auto=format&fit=crop&w=1200&q=80") center/cover;
}
.about-preview-img::before {
  content: "";
  position: absolute;
  bottom: -30px; right: -30px;
  width: 140px; height: 140px;
  background: var(--orange);
  border-radius: var(--radius);
  z-index: -1;
}
.about-preview-text h2 { margin-bottom: 20px; }
.about-preview-text p { color: var(--text-soft); margin-bottom: 28px; font-size: 1.05rem; }
@media (max-width: 800px) {
  .about-preview-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-preview-img { height: 340px; }
}

/* ---------- 8. CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: 90px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  top: -100px; left: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(243, 156, 18, 0.2), transparent 70%);
  border-radius: 50%;
}
.cta-banner::after {
  content: "";
  position: absolute;
  bottom: -100px; right: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(243, 156, 18, 0.15), transparent 70%);
  border-radius: 50%;
}
.cta-banner h2 { color: var(--white); margin-bottom: 16px; }
.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  font-size: 1.1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

/* ---------- 9. Page Hero (inner pages) ---------- */
.page-hero {
  padding: 180px 0 80px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  bottom: -150px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(243, 156, 18, 0.18), transparent 70%);
  border-radius: 50%;
}
.page-hero h1 {
  color: var(--white);
  margin-bottom: 16px;
  position: relative;
}
.page-hero p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.1rem;
  position: relative;
}

/* ---------- 10. Products Page ---------- */
.products-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 50px;
}
.filter-btn {
  padding: 10px 24px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-soft);
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover { color: var(--navy); border-color: var(--navy); }
.filter-btn.active {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.product-card.hidden { display: none; }
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--orange);
}
.product-img {
  position: relative;
  height: 280px;
  overflow: hidden;
  background: var(--light-gray);
}
.product-img-inner {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s ease;
}
.product-card:hover .product-img-inner { transform: scale(1.06); }
.product-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 14px;
  background: var(--orange);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 50px;
}
.product-body { padding: 22px; }
.product-body h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 6px;
  color: var(--navy);
}
.product-body p {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin-bottom: 16px;
  min-height: 42px;
}
.product-inquire {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.02em;
}
.product-inquire:hover { color: var(--navy); }
.product-inquire::after {
  content: "→";
  transition: transform var(--transition);
}
.product-inquire:hover::after { transform: translateX(4px); }

/* ---------- 11. About Page ---------- */
.about-content {
  max-width: 900px;
  margin: 0 auto;
}
.about-content h2 { margin-bottom: 24px; }
.about-content p {
  color: var(--text-soft);
  margin-bottom: 18px;
  font-size: 1.05rem;
  line-height: 1.8;
}
.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 60px;
}
.mv-card {
  padding: 40px;
  background: var(--cream);
  border-radius: var(--radius);
  border-left: 4px solid var(--orange);
}
.mv-card h3 { margin-bottom: 16px; }
.mv-card p { color: var(--text-soft); font-size: 1rem; }
@media (max-width: 700px) {
  .mission-vision { grid-template-columns: 1fr; }
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
  margin-top: 50px;
}
.value-card {
  padding: 32px 26px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.value-card:hover {
  border-color: var(--orange);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.value-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 12px;
  line-height: 1;
}
.value-card h4 { margin-bottom: 10px; }
.value-card p { color: var(--text-soft); font-size: 0.95rem; }

/* ---------- 12. Contact Page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  align-items: start;
}
@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}
.contact-info h2 { margin-bottom: 28px; }
.contact-list { list-style: none; padding: 0; }
.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.contact-list li:last-child { border-bottom: 0; }
.contact-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cream);
  color: var(--navy);
  border-radius: 50%;
}
.contact-icon svg { width: 20px; height: 20px; }
.contact-detail { flex: 1; }
.contact-detail strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--navy);
  margin-bottom: 4px;
}
.contact-detail span { color: var(--text-soft); font-size: 0.95rem; word-break: break-word; }
.contact-detail a { color: var(--text-soft); }
.contact-detail a:hover { color: var(--orange); }

.contact-map h3 {
  margin-bottom: 20px;
  font-size: 1.4rem;
}
.map-frame {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  background: var(--cream);
}
.map-frame iframe {
  display: block;
  width: 100%;
  min-height: 400px;
}

/* ---------- 13. Footer ---------- */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.8);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
.footer-brand .logo img { height: 56px; filter: brightness(0) invert(1); }
.footer-brand .logo-text { color: var(--white); }
.footer-brand p {
  margin-top: 18px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.7);
}
.footer-col h5 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--white);
  margin-bottom: 20px;
  font-weight: 600;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: rgba(255,255,255,0.7);
  font-size: 0.92rem;
  transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--orange); }
.footer-col address {
  font-style: normal;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
}
.footer-col address a { color: rgba(255,255,255,0.7); }
.footer-col address a:hover { color: var(--orange); }

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: var(--white);
  transition: all var(--transition);
}
.footer-social a:hover {
  background: var(--orange);
  transform: translateY(-3px);
}
.footer-social svg { width: 18px; height: 18px; }

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* ---------- 14. Floating WhatsApp button ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 58px;
  height: 58px;
  background: #25D366;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 22px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: transform var(--transition);
}
.whatsapp-float:hover {
  transform: scale(1.1);
  color: #fff;
}
.whatsapp-float svg { width: 30px; height: 30px; }

/* ---------- 15. Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.revealed { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---------- 16. Misc / Accessibility ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0s !important; transition-duration: 0.01ms !important; }
}