/* ==========================================================================
   AyurvedicTrip.com — Design System
   ========================================================================== */

:root {
  /* Palette — earthy Ayurveda tones (placeholder brand, refine later) */
  --color-forest: #1b4332;
  --color-forest-dark: #0f2a20;
  --color-forest-light: #2d6a4f;
  --color-gold: #d4a373;
  --color-gold-deep: #bc8a4f;
  --color-terracotta: #bf6952;
  --color-teal: #14746f;
  --color-cream: #faf6f0;
  --color-sand: #f0e6d6;
  --color-ink: #1c1c1c;
  --color-ink-soft: #4a4a44;
  --color-white: #ffffff;

  --glass-bg: rgba(255, 255, 255, 0.10);
  --glass-bg-strong: rgba(255, 255, 255, 0.16);
  --glass-border: rgba(255, 255, 255, 0.28);

  --shadow-soft: 0 20px 60px rgba(15, 42, 32, 0.18);
  --shadow-lift: 0 10px 30px rgba(15, 42, 32, 0.12);

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --container: 1180px;
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--color-ink);
  background: var(--color-cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: Georgia, "Times New Roman", serif;
  margin: 0 0 0.5em;
  line-height: 1.2;
  color: var(--color-forest-dark);
}

p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }
ul { padding-left: 1.2em; }
img { max-width: 100%; display: block; }

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

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-teal);
  font-weight: 600;
  margin-bottom: 0.6em;
}

.section {
  padding: 96px 0;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); }
.section-head p { color: var(--color-ink-soft); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-deep) 100%);
  color: var(--color-forest-dark);
  box-shadow: 0 12px 30px rgba(188, 138, 79, 0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(188, 138, 79, 0.45); }

.btn-ghost {
  background: var(--glass-bg);
  color: var(--color-white);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover { background: var(--glass-bg-strong); transform: translateY(-3px); }

.btn-outline {
  background: transparent;
  color: var(--color-forest);
  border: 2px solid var(--color-forest);
}
.btn-outline:hover { background: var(--color-forest); color: var(--color-white); }

.btn-whatsapp {
  background: #25d366;
  color: #fff;
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.35);
}
.btn-whatsapp:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(37, 211, 102, 0.45); }

.btn-block { width: 100%; justify-content: center; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: 18px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.site-header.is-scrolled {
  background: rgba(250, 246, 240, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
  padding: 12px 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: Georgia, serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.logo span { color: var(--color-gold); }
.site-header.is-scrolled .logo,
.page-header .logo { color: var(--color-forest-dark); }
.page-header.is-scrolled .logo span,
.page-header .logo span { color: var(--color-gold-deep); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  transition: opacity var(--transition);
}
.site-header.is-scrolled .nav-links a,
.page-header .nav-links a { color: var(--color-ink); }
.nav-links a:hover { opacity: 0.7; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  margin: 5px 0;
  transition: background var(--transition);
}
.site-header.is-scrolled .nav-toggle span,
.page-header .nav-toggle span { background: var(--color-ink); }

/* Pages other than homepage use a solid header (no hero behind it) */
.page-header {
  background: rgba(250, 246, 240, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 20%, rgba(212,163,115,0.25), transparent 45%),
    radial-gradient(circle at 80% 20%, rgba(20,116,111,0.30), transparent 55%),
    linear-gradient(180deg, rgba(15,42,32,0.75) 0%, rgba(15,42,32,0.55) 45%, rgba(15,42,32,0.88) 100%),
    url("../images/kerala/kerala-houseboat-backwaters.jpg");
  background-size: cover;
  background-position: center;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: 0.5;
  pointer-events: none;
}
.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: float 10s ease-in-out infinite;
}
.hero-shape.one { width: 340px; height: 340px; background: var(--color-gold); top: 8%; right: 8%; }
.hero-shape.two { width: 260px; height: 260px; background: var(--color-teal); bottom: 12%; left: 6%; animation-delay: -3s; }
.hero-shape.three { width: 200px; height: 200px; background: var(--color-terracotta); bottom: 30%; right: 25%; animation-delay: -6s; }

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(0, -30px) scale(1.06); }
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--color-white);
  max-width: 720px;
  padding-top: 90px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards;
}
.hero h1 {
  color: var(--color-white);
  font-size: clamp(2.4rem, 5.2vw, 4.2rem);
  margin-bottom: 0.3em;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.15s forwards;
}
.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.3s forwards;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  opacity: 0;
  animation: fadeUp 0.9s ease 0.45s forwards;
}
.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  pointer-events: none;
}
@media (max-width: 640px), (max-height: 820px) {
  .hero-scroll { display: none; }
}
.hero-scroll .line {
  width: 1px; height: 34px;
  background: rgba(255,255,255,0.5);
  animation: scrollLine 1.8s ease-in-out infinite;
}
@keyframes scrollLine { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Condition chips (quick picker on homepage) ---------- */
.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.chip {
  background: var(--color-white);
  border: 1px solid rgba(27,67,50,0.12);
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-forest-dark);
  box-shadow: var(--shadow-lift);
  transition: transform var(--transition), background var(--transition), color var(--transition);
}
.chip:hover {
  background: var(--color-forest);
  color: var(--color-white);
  transform: translateY(-4px);
}

/* ---------- How it works ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  box-shadow: var(--shadow-lift);
  transition: transform var(--transition), box-shadow var(--transition);
}
.step-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-soft); }
.step-card {
  display: flex;
  flex-direction: column;
}
.step-num {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-deep));
  color: var(--color-forest-dark);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  margin-bottom: 16px;
}
.step-icon {
  position: absolute;
  top: 28px;
  right: 24px;
  font-size: 1.5rem;
  opacity: 0.8;
}
.step-card { position: relative; }
.step-card h3 { font-size: 1.15rem; margin: 0 0 8px; }
.step-card p { color: var(--color-ink-soft); font-size: 0.94rem; margin: 0 0 14px; }
.step-detail {
  list-style: none;
  padding: 14px 0 0;
  margin: auto 0 0;
  border-top: 1px solid rgba(27,67,50,0.08);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.step-detail li {
  font-size: 0.82rem;
  color: var(--color-ink-soft);
  padding-left: 20px;
  position: relative;
  line-height: 1.35;
}
.step-detail li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-teal);
  font-weight: 700;
}

/* ---------- Treatment / card grids ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.glass-card {
  position: relative;
  border-radius: var(--radius-md);
  padding: 0 0 30px;
  background: var(--color-white);
  box-shadow: var(--shadow-lift);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.glass-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-soft); }
.glass-card .card-image {
  height: 200px;
  overflow: hidden;
}
.glass-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.glass-card:hover .card-image img { transform: scale(1.06); }
.glass-card .card-body { padding: 26px 30px 0; }
.glass-card .tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-teal);
  font-weight: 700;
  margin-bottom: 10px;
}
.glass-card h3 { font-size: 1.25rem; margin-bottom: 10px; }
.glass-card p { color: var(--color-ink-soft); font-size: 0.94rem; }
.glass-card a.card-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--color-forest);
  font-weight: 600;
  font-size: 0.92rem;
  margin-top: 10px;
}

/* ---------- Dark band section ---------- */
.section-dark {
  background: linear-gradient(135deg, var(--color-forest-dark), var(--color-forest));
  color: var(--color-white);
}
.section-dark h2 { color: var(--color-white); }
.section-dark p { color: rgba(255,255,255,0.78); }

/* ---------- Enquiry form ---------- */
.enquiry-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.enquiry-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-soft);
  color: var(--color-ink);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-forest-dark);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(27,67,50,0.18);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-cream);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-teal);
}
.form-note { font-size: 0.8rem; color: var(--color-ink-soft); margin-top: 14px; text-align: center; }
.form-success {
  display: none;
  background: rgba(37,211,102,0.12);
  border: 1px solid rgba(37,211,102,0.4);
  color: #146c3a;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-top: 14px;
}
.form-success.is-visible { display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-forest-dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-grid h4 { color: var(--color-white); font-size: 1rem; margin-bottom: 16px; font-family: inherit; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 10px; font-size: 0.92rem; }
.footer-grid a:hover { color: var(--color-gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Floating WhatsApp ---------- */
.wa-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
}
.wa-float-btn {
  width: 62px; height: 62px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 12px 30px rgba(37,211,102,0.5);
  border: none;
  cursor: pointer;
  transition: transform var(--transition);
}
.wa-float-btn:hover { transform: scale(1.08); }
.wa-menu {
  position: absolute;
  bottom: 76px;
  right: 0;
  width: 280px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: 18px;
  transform: translateY(10px) scale(0.96);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition), opacity var(--transition);
}
.wa-menu.is-open { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.wa-menu h4 { font-size: 0.95rem; margin-bottom: 12px; }
.wa-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-ink);
  transition: background var(--transition);
}
.wa-menu a:hover { background: var(--color-sand); }

/* ---------- Assessment quiz ---------- */
.quiz-shell {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 48px;
}
.quiz-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--color-sand);
  overflow: hidden;
  margin-bottom: 36px;
}
.quiz-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-teal));
  border-radius: 999px;
  transition: width 0.4s ease;
  width: 0%;
}
.quiz-step-label { font-size: 0.82rem; color: var(--color-ink-soft); margin-bottom: 8px; letter-spacing: 0.04em; text-transform: uppercase; }
.quiz-step h2 { font-size: 1.6rem; margin-bottom: 24px; }
.quiz-step { display: none; animation: fadeUp 0.5s ease forwards; }
.quiz-step.is-active { display: block; }

.option-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 8px;
}
.option-card {
  border: 2px solid rgba(27,67,50,0.12);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  transition: border-color var(--transition), background var(--transition);
  user-select: none;
}
.option-card:hover { border-color: var(--color-teal); }
.option-card.is-selected {
  border-color: var(--color-forest);
  background: var(--color-forest);
  color: var(--color-white);
}
.quiz-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 32px;
}
.quiz-summary-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.quiz-summary-list li {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(27,67,50,0.08);
  font-size: 0.92rem;
}
.quiz-summary-list li strong { color: var(--color-forest-dark); }
.quiz-badge {
  display: inline-block;
  background: var(--color-sand);
  color: var(--color-forest-dark);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  margin: 3px 4px 3px 0;
}

/* ---------- Disease page template ---------- */
.disease-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-forest-dark), var(--color-forest));
  color: var(--color-white);
  padding: 160px 0 80px;
}
.disease-hero .hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.disease-hero .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,42,32,0.82), rgba(27,67,50,0.75));
  z-index: 1;
}
.disease-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255,255,255,0.85); }
.disease-hero h1 { color: var(--color-white); font-size: clamp(2rem, 4vw, 3rem); }
.disease-hero .category-tag {
  display: inline-block;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.8rem;
  margin-bottom: 18px;
}
.disease-body {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
  padding: 70px 0;
}
.disease-main h2 { font-size: 1.5rem; margin-top: 40px; }
.disease-main h2:first-child { margin-top: 0; }
.reviewed-by {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(27,67,50,0.05);
  border: 1px solid rgba(27,67,50,0.1);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 30px;
}
.reviewed-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-teal);
  color: var(--color-white);
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.reviewed-by p { font-size: 0.85rem; color: var(--color-ink-soft); margin: 0; }
.reviewed-by a { color: var(--color-forest); font-weight: 600; }
.symptom-list li { margin-bottom: 8px; }
.treatment-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 20px 0 10px;
}
.treatment-card {
  border: 1px solid rgba(27,67,50,0.12);
  border-radius: var(--radius-sm);
  padding: 18px;
  display: block;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
a.treatment-card:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-4px);
  border-color: rgba(27,67,50,0.25);
}
.treatment-card h4 { font-size: 1rem; margin-bottom: 6px; }
.treatment-card p { font-size: 0.88rem; color: var(--color-ink-soft); margin: 0; }

.faq-item {
  border-bottom: 1px solid rgba(27,67,50,0.1);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-forest-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  color: var(--color-ink-soft);
  font-size: 0.94rem;
}
.faq-answer p { padding-bottom: 16px; }
.faq-item.is-open .faq-answer { max-height: 300px; }
.faq-item.is-open .faq-icon { transform: rotate(45deg); }
.faq-icon { transition: transform var(--transition); font-size: 1.2rem; color: var(--color-gold-deep); }

.sidebar-card {
  background: var(--color-sand);
  border-radius: var(--radius-md);
  padding: 26px;
  margin-bottom: 20px;
}
.sidebar-card h4 { font-size: 1rem; margin-bottom: 12px; }
.sidebar-card ul { padding-left: 1.1em; font-size: 0.9rem; }
.sidebar-card ul li { margin-bottom: 6px; }

.related-links a {
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid rgba(27,67,50,0.08);
  font-size: 0.92rem;
  font-weight: 500;
}

/* ---------- Kerala nature band ---------- */
.nature-band {
  padding: 100px 0;
  background: var(--color-forest-dark);
  color: var(--color-white);
}
.nature-band .section-head h2 { color: var(--color-white); }
.nature-band .section-head p { color: rgba(255,255,255,0.75); }
.nature-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 160px;
  gap: 14px;
}
.nature-gallery a {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: block;
}
.nature-gallery a.span-2 { grid-column: span 2; grid-row: span 2; }
.nature-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.nature-gallery a:hover img { transform: scale(1.08); }
.nature-gallery span {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 14px;
  background: linear-gradient(0deg, rgba(0,0,0,0.65), transparent);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity var(--transition);
}
.nature-gallery a:hover span { opacity: 1; }

/* ---------- Diseases hub ---------- */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.hub-card {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  padding: 22px;
  box-shadow: var(--shadow-lift);
  transition: transform var(--transition), box-shadow var(--transition);
}
.hub-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-soft); }
.hub-card .tag { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-teal); font-weight: 700; }
.hub-card h3 { font-size: 1.05rem; margin: 8px 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    box-shadow: var(--shadow-lift);
    display: none;
    gap: 16px;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { color: var(--color-ink) !important; }
  .nav-toggle { display: block; }
}
@media (max-width: 900px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .enquiry-wrap { grid-template-columns: 1fr; }
  .disease-body { grid-template-columns: 1fr; }
  .hub-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nature-gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 180px; }
  .nature-gallery a.span-2 { grid-column: span 1; grid-row: span 1; }
}
@media (max-width: 640px) {
  .steps { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .option-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hub-grid { grid-template-columns: 1fr; }
  .treatment-cards { grid-template-columns: 1fr; }
  .quiz-shell { padding: 30px 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .nature-gallery { grid-template-columns: 1fr; grid-auto-rows: 220px; }
}