/* ==========================================================================
   Dr. Bimal Kahar - Consultant Interventional Cardiologist
   Design System & Stylesheet (Vanilla CSS3)
   ========================================================================== */

/* --- CSS Variables & Design Tokens --- */
:root {
  /* Color Palette */
  --primary-navy: #0a192f;
  --navy-dark: #071527;
  --navy-surface: #0f2540;
  --primary-blue: #0284c7;
  --primary-blue-hover: #0369a1;
  --blue-soft: #e0f2fe;
  --blue-light: #f0f9ff;
  --cyan-accent: #06b6d4;
  --teal-accent: #0d9488;
  --emerald-success: #10b981;

  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-on-dark: #ffffff;

  /* Backgrounds & Borders */
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-alt: #f1f5f9;
  --border-color: #e2e8f0;
  --border-focus: #0284c7;

  /* Typography */
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-heading: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 25px rgba(2, 132, 199, 0.25);
  --shadow-dark: 0 20px 40px -15px rgba(7, 21, 39, 0.3);

  /* Layout & Spacing */
  --container-max: 1240px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Global Reset & Base Styles --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-secondary);
  line-height: 1.65;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-blue-hover);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
}

/* --- Scroll Progress Bar --- */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue), var(--cyan-accent));
  width: 0%;
  z-index: 1000;
  transition: width 0.1s ease-out;
}

/* --- Container Utility --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* --- Typography Utilities --- */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background-color: var(--blue-soft);
  color: var(--primary-blue);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.section-tag svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

/* --- Top Announcement Bar --- */
.top-bar {
  background-color: var(--navy-dark);
  color: var(--text-light);
  font-size: 0.875rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.top-info-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.top-info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.top-info-item svg {
  width: 15px;
  height: 15px;
  color: var(--cyan-accent);
}

.reg-badge {
  background: rgba(6, 182, 212, 0.15);
  color: var(--cyan-accent);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.8rem;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

/* --- Header & Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 990;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(255, 255, 255, 0.98);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 1.5rem;
  min-width: 0;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 1;
  min-width: 0;
  overflow: hidden;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary-blue), var(--cyan-accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}

.brand-icon svg {
  width: 24px;
  height: 24px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary-navy);
  line-height: 1.1;
  white-space: nowrap;
}

.brand-title {
  font-size: 0.75rem;
  color: var(--primary-blue);
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0.25rem;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2.5px;
  background: linear-gradient(90deg, var(--primary-blue), var(--cyan-accent));
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-blue);
}

.nav-link.active::after,
.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-card-alt);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  transition: background-color var(--transition-fast);
}

.mobile-toggle svg {
  width: 24px;
  height: 24px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.975rem;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-hover));
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: #ffffff;
}

.btn-primary:hover svg {
  transform: translateX(3px);
}

.btn-secondary {
  background-color: var(--blue-soft);
  color: var(--primary-blue);
  border: 1px solid rgba(2, 132, 199, 0.2);
}

.btn-secondary:hover {
  background-color: var(--primary-blue);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background-color: var(--blue-light);
}

/* --- Hero Section --- */
.hero-section {
  position: relative;
  padding: 5rem 0 4rem;
  background: radial-gradient(circle at 80% 20%, rgba(224, 242, 254, 0.6) 0%, rgba(248, 250, 252, 0) 50%),
    radial-gradient(circle at 10% 80%, rgba(6, 182, 212, 0.08) 0%, rgba(248, 250, 252, 0) 40%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1.1rem;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background-color: var(--emerald-success);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.hero-title {
  font-size: clamp(2.5rem, 4.5vw, 3.6rem);
  font-weight: 800;
  color: var(--primary-navy);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary-blue), var(--cyan-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subheadline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 620px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-trust-pills {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.trust-pill {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.trust-pill svg {
  width: 18px;
  height: 18px;
  color: var(--primary-blue);
}

/* Hero Image Card */
.hero-visual-wrapper {
  position: relative;
}

.hero-image-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-dark);
  border: 1px solid var(--border-color);
  background: var(--navy-dark);
  animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-12px);
  }
}

.hero-doctor-img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform var(--transition-slow);
}

.hero-image-card:hover .hero-doctor-img {
  transform: scale(1.03);
}

.hero-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 21, 39, 0) 60%, rgba(7, 21, 39, 0.75) 100%);
  pointer-events: none;
}

.floating-badge {
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10;
}

.floating-badge-1 {
  top: -15px;
  right: -15px;
}

.floating-badge-2 {
  bottom: 20px;
  left: -20px;
}

.badge-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge-icon svg {
  width: 20px;
  height: 20px;
}

.badge-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.badge-text span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* --- Stats Counter Section --- */
.stats-section {
  padding: 3rem 0;
  background-color: var(--primary-navy);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 1.5rem;
  position: relative;
}

.stat-card:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--cyan-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-light);
  font-weight: 500;
}

/* --- Section Global Structure --- */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-alt {
  background-color: #ffffff;
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.about-image-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  background: #ffffff;
}

.about-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.about-image-frame:hover .about-img {
  transform: scale(1.04);
}

.about-img-badge {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.about-img-badge h4 {
  font-size: 1.05rem;
  color: var(--primary-navy);
  margin-bottom: 0.2rem;
}

.about-img-badge p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.about-text-content p {
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
  line-height: 1.75;
}

.about-highlights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.about-highlight-box {
  background: var(--bg-main);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.about-highlight-box svg {
  width: 22px;
  height: 22px;
  color: var(--primary-blue);
  flex-shrink: 0;
}

.about-highlight-box span {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- Cath Lab Showcase Banner --- */
.cathlab-showcase-section {
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--navy-dark), var(--primary-navy));
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.cathlab-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.cathlab-img-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-glow);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.cathlab-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.cathlab-img-frame:hover .cathlab-img {
  transform: scale(1.03);
}

.cathlab-content h2 {
  color: #ffffff;
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.cathlab-content p {
  color: var(--text-light);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.cathlab-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cathlab-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: #ffffff;
  font-weight: 500;
}

.cathlab-feature-item svg {
  width: 20px;
  height: 20px;
  color: var(--cyan-accent);
  flex-shrink: 0;
}

/* --- Services Section (Cards) --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.service-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--cyan-accent));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(2, 132, 199, 0.3);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--blue-soft);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.service-card:hover .service-icon-box {
  background: var(--primary-blue);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.service-icon-box svg {
  width: 28px;
  height: 28px;
  stroke-width: 1.75px;
}

.service-card:hover .service-icon-box svg {
  stroke: #ffffff;
  transform: scale(1.1);
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-blue);
}

/* --- Hospital Affiliations Section --- */
.hospitals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
  margin-top: 3rem;
}

.hospital-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.hospital-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
}

.hospital-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--navy-dark), var(--primary-navy));
  color: var(--cyan-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hospital-icon svg {
  width: 24px;
  height: 24px;
}

.hospital-info h3 {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.hospital-info p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* --- Education & Experience Timeline --- */
.timeline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  margin-top: 3.5rem;
}

.timeline-column-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border-color);
}

.timeline-column-title svg {
  width: 24px;
  height: 24px;
  color: var(--primary-blue);
}

.timeline-wrapper {
  position: relative;
  padding-left: 2rem;
}

.timeline-wrapper::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.25rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--primary-blue);
  box-shadow: 0 0 0 4px var(--blue-soft);
  z-index: 2;
}

.timeline-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.timeline-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
}

.timeline-date {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-blue);
  background: var(--blue-soft);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.timeline-degree {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.timeline-institution {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.75rem;
}

/* --- Why Choose Us (Features) --- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.why-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  transition: all var(--transition-fast);
}

.why-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--primary-blue);
}

.why-check-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.why-check-icon svg {
  width: 20px;
  height: 20px;
}

.why-content h3 {
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.why-content p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Certifications & Achievements Section --- */
.cert-achieve-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

.cert-box,
.achieve-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.cert-box-title,
.achieve-box-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  margin-bottom: 1.75rem;
  color: var(--text-primary);
}

.cert-box-title svg,
.achieve-box-title svg {
  width: 26px;
  height: 26px;
  color: var(--primary-blue);
}

.cert-list,
.achieve-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cert-item,
.achieve-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.cert-bullet,
.achieve-bullet {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.12);
  color: var(--cyan-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.cert-bullet svg,
.achieve-bullet svg {
  width: 14px;
  height: 14px;
}

.cert-details h4,
.achieve-details h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.cert-details p,
.achieve-details p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Patient Care Philosophy --- */
.philosophy-section {
  background: linear-gradient(135deg, var(--navy-dark), var(--primary-navy));
  color: #ffffff;
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.philosophy-card {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}

.quote-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.5rem;
  color: var(--cyan-accent);
  opacity: 0.8;
}

.quote-icon svg {
  width: 100%;
  height: 100%;
}

.philosophy-quote {
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 400;
  line-height: 1.6;
  color: #f1f5f9;
  font-style: italic;
  margin-bottom: 2rem;
}

.philosophy-author {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.philosophy-author-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
}

.philosophy-author-title {
  font-size: 0.9rem;
  color: var(--cyan-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  margin-top: 3rem;
}

.contact-info-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.contact-info-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.contact-details-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  min-width: 0;
}

.contact-detail-item > div {
  min-width: 0;
  flex: 1;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--blue-soft);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
}

.contact-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
  display: block;
  margin-bottom: 0.2rem;
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.contact-value a {
  overflow-wrap: anywhere;
  word-break: break-all;
}

.contact-action-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  width: 100%;
}

/* Map Frame Placeholder */
.map-frame-wrapper {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 400px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.map-header {
  padding: 1.25rem 1.5rem;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.map-header h4 {
  font-size: 1.05rem;
  color: var(--text-primary);
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.map-body {
  flex-grow: 1;
  width: 100%;
  max-width: 100%;
  height: 100%;
  min-height: 350px;
  border: none;
  display: block;
}

/* --- Footer & Disclaimer --- */
.site-footer {
  background-color: var(--navy-dark);
  color: var(--text-light);
  padding: 5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  font-size: 0.95rem;
  margin-top: 1rem;
  color: var(--text-light);
  line-height: 1.6;
}

.footer-title {
  font-size: 1.1rem;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-light);
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--cyan-accent);
}

.disclaimer-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 3rem;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-light);
}

.disclaimer-box strong {
  color: var(--cyan-accent);
  display: block;
  margin-bottom: 0.4rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.875rem;
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 900;
  box-sizing: border-box;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-blue-hover);
  transform: translateY(-4px);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* Sticky WhatsApp Button */
.whatsapp-sticky {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  background-color: #25d366;
  color: #ffffff;
  border-radius: 50px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem 0.75rem 1rem;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
  z-index: 999;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.whatsapp-sticky:hover {
  background-color: #20ba5a;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
  color: #ffffff;
}

.whatsapp-sticky svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .whatsapp-sticky {
    bottom: 1.5rem;
    left: 1.5rem;
    padding: 0.75rem;
    border-radius: 50%;
  }
  .whatsapp-sticky .whatsapp-text {
    display: none;
  }
}


/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Media Queries --- */
@media (max-width: 1240px) and (min-width: 1025px) {
  .nav-menu {
    gap: 1rem;
  }

  .nav-link {
    font-size: 0.88rem;
    padding: 0.4rem 0.15rem;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .brand-title {
    font-size: 0.7rem;
  }
}

@media (max-width: 1024px) {

  .hero-grid,
  .about-grid,
  .timeline-grid,
  .cert-achieve-grid,
  .contact-grid,
  .cathlab-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .header-inner {
    gap: 1rem;
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
    z-index: 980;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-menu.mobile-active {
    transform: translateY(0);
  }

  .mobile-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .nav-actions {
    flex-shrink: 0;
    gap: 0.5rem;
  }

  .nav-actions .btn-header-cta {
    display: none;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .header-inner {
    height: 70px;
    gap: 0.5rem;
  }

  .brand-logo {
    gap: 0.5rem;
  }

  .brand-icon {
    width: 38px;
    height: 38px;
  }

  .brand-icon svg {
    width: 20px;
    height: 20px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .brand-title {
    font-size: 0.68rem;
    white-space: normal;
    line-height: 1.15;
  }

  .mobile-toggle {
    width: 38px;
    height: 38px;
  }

  .mobile-toggle svg {
    width: 20px;
    height: 20px;
  }

  /* Back to top mobile positioning */
  .back-to-top {
    bottom: 1.25rem;
    right: 1.25rem;
    bottom: calc(1.25rem + env(safe-area-inset-bottom));
    right: calc(1.25rem + env(safe-area-inset-right));
    width: 42px;
    height: 42px;
  }

  .back-to-top svg {
    width: 18px;
    height: 18px;
  }

  /* Map mobile layout fixes */
  .map-frame-wrapper {
    min-height: 350px;
  }

  .map-header {
    padding: 1rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .map-header h4 {
    font-size: 0.98rem;
  }

  .map-body {
    min-height: 280px;
  }

  /* Clinic & Practice Details mobile layout fixes */
  .contact-info-card {
    padding: 1.5rem 1.25rem;
  }

  .contact-info-title {
    font-size: 1.3rem;
    margin-bottom: 1.25rem;
  }

  .contact-details-list {
    gap: 1.25rem;
    margin-bottom: 1.75rem;
  }

  .contact-detail-item {
    gap: 0.85rem;
  }

  .contact-icon {
    width: 38px;
    height: 38px;
  }

  .contact-icon svg {
    width: 18px;
    height: 18px;
  }

  .contact-value {
    font-size: 0.95rem;
  }

  .contact-action-btns {
    flex-direction: column;
    gap: 0.75rem;
  }

  .contact-action-btns .btn {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1rem;
    white-space: normal;
    text-align: center;
  }

  /* Grid column resets for mobile view */
  .services-grid,
  .edu-cards-grid,
  .why-grid,
  .hospitals-grid {
    grid-template-columns: 1fr;
  }

  .top-bar-inner {
    justify-content: center;
    text-align: center;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .stat-card:not(:last-child)::after {
    display: none;
  }

  .timeline-wrapper {
    padding-left: 1.5rem;
  }

  .timeline-dot {
    left: -1.5rem;
  }
}

@media (max-width: 480px) {
  .brand-title {
    font-size: 0.65rem;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    bottom: calc(1rem + env(safe-area-inset-bottom));
    right: calc(1rem + env(safe-area-inset-right));
    width: 40px;
    height: 40px;
  }
}

/* ==========================================================================
   Patient Education & Article Specific Styles
   ========================================================================== */

/* --- Dropdown Nav Menu --- */
.nav-item-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background-color: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 990;
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-link:hover {
  background-color: var(--blue-light);
  color: var(--primary-blue);
}

/* Mobile Dropdown adjustment */
@media (max-width: 991px) {
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding-left: 1rem;
    background: transparent;
  }
}

/* --- Breadcrumb Navigation --- */
.breadcrumb-nav {
  padding: 1rem 0;
  background-color: var(--bg-card-alt);
  border-bottom: 1px solid var(--border-color);
  margin-top: 80px;
  /* Offset fixed header */
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.breadcrumb-item a {
  color: var(--primary-blue);
}

.breadcrumb-item a:hover {
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--text-light);
  font-size: 0.8rem;
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
}

/* --- Homepage Patient Education Cards Section --- */
.edu-section {
  padding: 5rem 0;
  background-color: #ffffff;
}

.edu-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.edu-card {
  background: var(--bg-main);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.edu-card-img-wrapper {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy-dark) 0%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-color);
}

.edu-card-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
  transition: transform var(--transition-normal);
}

.edu-card:hover .edu-card-img {
  transform: scale(1.05);
}

.edu-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}

.edu-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.edu-card-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--blue-soft);
  color: var(--primary-blue);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  align-self: flex-start;
}

.edu-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  line-height: 1.35;
}

.edu-card-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.edu-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.88rem;
  color: var(--primary-blue);
  font-weight: 600;
}

.edu-card-footer svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.edu-card:hover .edu-card-footer svg {
  transform: translateX(4px);
}

/* --- Article Header & Layout --- */
.article-header-section {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--primary-navy) 100%);
  color: #ffffff;
  padding: 3.5rem 0 4rem 0;
  position: relative;
}

.article-header-content {
  max-width: 860px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
  margin-top: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-light);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.article-meta-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--cyan-accent);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2.5rem;
  padding: 3.5rem 0;
}

@media (max-width: 991px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
}

.article-content-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* --- Featured Article Image Container --- */
.article-featured-image-wrapper {
  margin: 1.5rem auto 2rem auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--navy-dark);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 680px;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.article-featured-img {
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: contain;
  display: block;
  transition: transform var(--transition-normal);
}

.article-featured-image-wrapper:hover .article-featured-img {
  transform: scale(1.02);
}

.article-image-caption {
  padding: 0.75rem 1.25rem;
  background-color: var(--navy-surface);
  color: var(--text-light);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  width: 100%;
}

.article-image-caption svg {
  width: 16px;
  height: 16px;
  stroke: var(--cyan-accent);
  flex-shrink: 0;
}

.article-content-body h2 {
  font-size: 1.65rem;
  margin: 2.25rem 0 1rem 0;
  color: var(--primary-navy);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--blue-soft);
}

.article-content-body h3 {
  font-size: 1.3rem;
  margin: 1.75rem 0 0.75rem 0;
  color: var(--text-primary);
}

.article-content-body p {
  margin-bottom: 1.25rem;
}

.article-content-body ul,
.article-content-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-content-body li {
  margin-bottom: 0.5rem;
}

/* --- Callout & Takeaway Boxes --- */
.key-takeaway-box {
  background: linear-gradient(135deg, var(--blue-light) 0%, #e0f2fe 100%);
  border-left: 4px solid var(--primary-blue);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

.key-takeaway-box h4 {
  color: var(--primary-navy);
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.key-takeaway-box h4 svg {
  width: 20px;
  height: 20px;
  stroke: var(--primary-blue);
}

.disclaimer-box {
  background-color: #fffbe6;
  border: 1px solid #ffe58f;
  border-left: 4px solid #faad14;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 2rem 0;
  font-size: 0.9rem;
  color: #722ed1;
  color: #595959;
}

.disclaimer-box strong {
  color: #d46b08;
}

/* --- FAQ Accordions --- */
.faq-section-article {
  margin-top: 3rem;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--primary-blue);
}

.faq-question {
  width: 100%;
  padding: 1.25rem;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  cursor: pointer;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  stroke: var(--primary-blue);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out, padding var(--transition-normal);
  padding: 0 1.25rem;
  font-size: 0.98rem;
  color: var(--text-secondary);
  background-color: var(--bg-main);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 1rem 1.25rem 1.25rem 1.25rem;
}

/* --- Article Sidebar & TOC --- */
.toc-box {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  position: sticky;
  top: 100px;
  box-shadow: var(--shadow-sm);
}

.toc-title {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--primary-navy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.92rem;
}

.toc-list a {
  color: var(--text-secondary);
  display: block;
  padding: 0.25rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  transition: all var(--transition-fast);
}

.toc-list a:hover,
.toc-list a.active {
  color: var(--primary-blue);
  border-left-color: var(--primary-blue);
  font-weight: 600;
}

.doctor-author-card {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--primary-navy) 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-top: 2rem;
}

.doctor-author-card h4 {
  color: #ffffff;
  margin-bottom: 0.25rem;
  font-size: 1.15rem;
}

.doctor-author-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.doctor-author-card .btn {
  width: 100%;
  justify-content: center;
}