/* ===== CSS VARIABLES ===== */
:root {
  --ocean-deep: #0B2545;
  --ocean-mid: #13497B;
  --ocean-light: #1B6CA8;
  --ocean-pale: #A8D5F2;
  --ocean-tint: #E8F4FD;
  --gold: #C6973F;
  --gold-light: #D4AF61;
  --gold-pale: #F5ECD7;
  --white: #FFFFFF;
  --off-white: #F8FAFB;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-400: #94A3B8;
  --gray-600: #475569;
  --gray-800: #1E293B;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --shadow-sm: 0 1px 3px rgba(11,37,69,.08);
  --shadow-md: 0 4px 16px rgba(11,37,69,.10);
  --shadow-lg: 0 12px 40px rgba(11,37,69,.14);
  --radius: 12px;
  --transition: .35s cubic-bezier(.4,0,.2,1);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== UTILITY ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 100px 0; }
.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--ocean-deep);
  line-height: 1.25;
  margin-bottom: 20px;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 620px;
  line-height: 1.8;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}
.btn-primary {
  background: var(--gold);
  color: var(--white);
}
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,.4);
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.btn-ocean {
  background: var(--ocean-mid);
  color: var(--white);
}
.btn-ocean:hover { background: var(--ocean-light); transform: translateY(-2px); }
.gold-divider {
  width: 50px; height: 3px;
  background: var(--gold);
  border-radius: 3px;
  margin: 18px 0 24px;
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 18px 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(11,37,69,.97);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,.15);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--white);
}
.nav-brand span { color: var(--gold); }
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
  font-size: .85rem;
  font-weight: 500;
  color: rgba(255,255,255,.8);
  letter-spacing: .5px;
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.hamburger {
  display: none; cursor: pointer;
  flex-direction: column; gap: 5px;
}
.hamburger span {
  width: 26px; height: 2px;
  background: var(--white);
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--ocean-deep) 0%, var(--ocean-mid) 50%, var(--ocean-light) 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.03" d="M0,192L48,176C96,160,192,128,288,133.3C384,139,480,181,576,186.7C672,192,768,160,864,149.3C960,139,1056,149,1152,165.3C1248,181,1344,203,1392,213.3L1440,224L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"/></svg>') no-repeat bottom center;
  background-size: cover;
}
.hero-content { position: relative; z-index: 2; max-width: 680px; }
.hero-label {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(198,151,63,.15);
  border: 1px solid rgba(198,151,63,.3);
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero h1 .gold { color: var(--gold); }
.hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.75);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 540px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 48px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stat h3 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
}
.hero-stat p {
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 0;
  letter-spacing: .5px;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-image-wrapper {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
}
.hero-image-frame {
  position: relative;
  width: 420px;
  height: 520px;
}
.hero-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 220px 220px 30px 30px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.hero-image-frame::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 228px 228px 38px 38px;
  border: 2px solid rgba(198,151,63,.3);
  z-index: -1;
}
.hero-image-frame::after {
  content: '';
  position: absolute;
  bottom: -16px;
  right: -16px;
  width: 120px;
  height: 120px;
  background: var(--gold);
  opacity: .15;
  border-radius: 20px;
  z-index: -1;
}
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-image-wrapper { order: -1; }
  .hero-image-frame { width: 300px; height: 380px; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
}
@media (max-width: 768px) {
  .hero-image-frame { width: 240px; height: 310px; }
}

/* ===== ABOUT ===== */
#about { background: var(--off-white); }
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-image-wrapper {
  position: relative;
}
.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-image img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}
.about-image-accent {
  position: absolute;
  bottom: -20px; right: -20px;
  width: 180px; height: 180px;
  border: 3px solid var(--gold);
  border-radius: var(--radius);
  z-index: -1;
}
.about-credentials {
  display: flex; gap: 16px; flex-wrap: wrap;
  margin: 28px 0;
}
.credential {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  background: var(--white);
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 500;
  color: var(--ocean-mid);
  box-shadow: var(--shadow-sm);
}
.credential i { color: var(--gold); font-size: .75rem; }

/* ===== EMERGENCY MEDICINE ===== */
#emergency { background: var(--white); }
.em-header { text-align: center; max-width: 680px; margin: 0 auto 60px; }
.em-header .section-subtitle { margin: 0 auto; }
.em-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.em-card {
  padding: 40px 32px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: var(--transition);
}
.em-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.em-icon {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--ocean-tint);
  border-radius: 14px;
  margin-bottom: 22px;
  font-size: 1.3rem;
  color: var(--ocean-mid);
  transition: var(--transition);
}
.em-card:hover .em-icon {
  background: var(--ocean-mid);
  color: var(--white);
}
.em-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ocean-deep);
  margin-bottom: 12px;
}
.em-card p {
  font-size: .9rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ===== GLOBAL HEALTH ===== */
#global-health {
  background: linear-gradient(135deg, var(--ocean-deep) 0%, var(--ocean-mid) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
#global-health::before {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(198,151,63,.08) 0%, transparent 70%);
  border-radius: 50%;
}
.gh-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative; z-index: 2;
}
#global-health .section-label { color: var(--gold-light); }
#global-health .section-title { color: var(--white); }
#global-health .section-subtitle { color: rgba(255,255,255,.7); }
.gh-initiatives {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}
.gh-initiative {
  padding: 24px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  transition: var(--transition);
}
.gh-initiative:hover {
  background: rgba(255,255,255,.1);
  transform: translateY(-3px);
}
.gh-initiative h4 {
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.gh-initiative p {
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  line-height: 1.6;
}
.gh-map {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}
.gh-map i {
  font-size: 4rem;
  color: var(--gold);
  margin-bottom: 20px;
}
.gh-map-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 28px;
}
.gh-map-stat h4 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gold);
}
.gh-map-stat p {
  font-size: .75rem;
  color: rgba(255,255,255,.5);
  margin-top: 4px;
}

/* ===== BLOG ===== */
#blog { background: var(--off-white); }
.blog-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 50px;
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.blog-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.blog-card-image {
  height: 210px;
  overflow: hidden;
  position: relative;
}
.blog-card-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.blog-card:hover .blog-card-image img { transform: scale(1.05); }
.blog-tag {
  position: absolute; top: 16px; left: 16px;
  padding: 5px 14px;
  background: var(--gold);
  color: var(--white);
  font-size: .7rem;
  font-weight: 600;
  border-radius: 50px;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.blog-card-body { padding: 28px; }
.blog-card-meta {
  display: flex; align-items: center; gap: 16px;
  font-size: .78rem;
  color: var(--gray-400);
  margin-bottom: 14px;
}
.blog-card-meta span { display: flex; align-items: center; gap: 5px; }
.blog-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ocean-deep);
  line-height: 1.4;
  margin-bottom: 12px;
  transition: var(--transition);
}
.blog-card:hover h3 { color: var(--ocean-light); }
.blog-card p {
  font-size: .88rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 18px;
}
.read-more {
  font-size: .85rem;
  font-weight: 600;
  color: var(--ocean-mid);
  display: inline-flex; align-items: center; gap: 6px;
  transition: var(--transition);
}
.read-more:hover { color: var(--gold); gap: 10px; }

/* ===== CONTACT ===== */
#contact { background: var(--white); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
}
.contact-info-card {
  padding: 40px;
  background: linear-gradient(135deg, var(--ocean-deep), var(--ocean-mid));
  border-radius: var(--radius);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.contact-info-card::before {
  content: '';
  position: absolute; top: -50px; right: -50px;
  width: 200px; height: 200px;
  background: rgba(198,151,63,.1);
  border-radius: 50%;
}
.contact-info-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.contact-info-card > p {
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 36px;
}
.contact-item {
  display: flex; gap: 16px;
  margin-bottom: 28px;
}
.contact-item-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.1);
  border-radius: 10px;
  color: var(--gold);
  font-size: .95rem;
  flex-shrink: 0;
}
.contact-item h4 {
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 3px;
}
.contact-item p {
  font-size: .85rem;
  color: rgba(255,255,255,.65);
  line-height: 1.5;
}
.contact-social {
  display: flex; gap: 12px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.contact-social a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.08);
  border-radius: 10px;
  color: rgba(255,255,255,.7);
  transition: var(--transition);
}
.contact-social a:hover { background: var(--gold); color: var(--white); }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--gray-600);
  letter-spacing: .3px;
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: 14px 18px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--gray-800);
  transition: var(--transition);
  background: var(--off-white);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--ocean-light);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(27,108,168,.08);
}
.form-group textarea { resize: vertical; min-height: 130px; }

/* ===== FOOTER ===== */
.footer {
  background: var(--ocean-deep);
  color: rgba(255,255,255,.6);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
}
.footer-brand span { color: var(--gold); }
.footer p { font-size: .85rem; line-height: 1.8; }
.footer h4 {
  font-size: .85rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer ul li { margin-bottom: 10px; }
.footer ul a {
  font-size: .85rem;
  transition: var(--transition);
}
.footer ul a:hover { color: var(--gold); }
.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; justify-content: space-between; align-items: center;
  font-size: .8rem;
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== BLOG SINGLE POST ===== */
.blog-single {
  padding-top: 120px;
  padding-bottom: 80px;
}
.blog-single-header {
  max-width: 800px;
  margin: 0 auto 48px;
  text-align: center;
}
.blog-single-header .blog-tag {
  position: static;
  display: inline-block;
  margin-bottom: 20px;
}
.blog-single-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--ocean-deep);
  line-height: 1.25;
  margin-bottom: 20px;
}
.blog-single-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: .85rem;
  color: var(--gray-400);
}
.blog-single-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.blog-single-image {
  max-width: 900px;
  margin: 0 auto 48px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.blog-single-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.blog-single-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--gray-800);
}
.blog-single-content h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--ocean-deep);
  margin: 48px 0 20px;
}
.blog-single-content h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--ocean-deep);
  margin: 36px 0 16px;
}
.blog-single-content p {
  margin-bottom: 24px;
}
.blog-single-content blockquote {
  border-left: 4px solid var(--gold);
  padding: 16px 24px;
  margin: 32px 0;
  background: var(--gold-pale);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--gray-600);
}
.blog-single-content ul,
.blog-single-content ol {
  margin: 20px 0 24px 24px;
  list-style: disc;
}
.blog-single-content ol {
  list-style: decimal;
}
.blog-single-content li {
  margin-bottom: 8px;
}
.blog-single-content img {
  border-radius: var(--radius);
  margin: 32px 0;
  box-shadow: var(--shadow-md);
}
.blog-single-content a {
  color: var(--ocean-light);
  text-decoration: underline;
  transition: var(--transition);
}
.blog-single-content a:hover {
  color: var(--gold);
}
.blog-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--ocean-mid);
  margin-bottom: 40px;
  transition: var(--transition);
}
.blog-back-link:hover {
  color: var(--gold);
  gap: 12px;
}

/* ===== BLOG LIST PAGE ===== */
.blog-list-header {
  padding-top: 120px;
  padding-bottom: 60px;
  background: linear-gradient(135deg, var(--ocean-deep) 0%, var(--ocean-mid) 100%);
  text-align: center;
  color: var(--white);
}
.blog-list-header .blog-back-link--light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  font-weight: 600;
  color: rgba(255,255,255,.7);
  margin-bottom: 28px;
  transition: var(--transition);
  position: absolute;
  left: 24px;
  top: 0;
}
.blog-list-header .blog-back-link--light:hover {
  color: var(--gold-light);
  gap: 12px;
}
.blog-list-header .container {
  position: relative;
}
.blog-list-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.blog-list-header p {
  font-size: 1.05rem;
  color: rgba(255,255,255,.7);
  max-width: 560px;
  margin: 0 auto;
}
.blog-list-section {
  padding: 60px 0 80px;
  background: var(--off-white);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .about-grid, .gh-grid, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .em-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-image-frame { width: 300px; height: 380px; }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(11,37,69,.98);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .em-grid, .blog-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 28px; flex-wrap: wrap; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .blog-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .section-padding { padding: 60px 0; }
  .blog-single-image img { height: 250px; }
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-to-top {
  position: fixed;
  bottom: 36px;
  right: 36px;
  width: 48px;
  height: 48px;
  background: var(--ocean-mid);
  color: var(--white);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(11,37,69,.30);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s ease, visibility .3s ease, transform .3s ease, background .2s ease;
  z-index: 999;
  font-size: 1rem;
}
.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.scroll-to-top:hover {
  background: var(--gold);
  box-shadow: 0 6px 24px rgba(198,151,63,.40);
}
@media (max-width: 600px) {
  .scroll-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; font-size: .875rem; }
}