/* ============================================
   International Cardiovascular — Stylesheet
   Classic & Elegant | Charcoal + Coral
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --charcoal-900: #1a1d23;
  --charcoal-800: #252830;
  --charcoal-700: #374151;
  --charcoal-600: #4b5563;
  --charcoal-500: #6b7280;
  --charcoal-400: #9ca3af;
  --charcoal-100: #f3f4f6;
  --charcoal-50:  #f9fafb;

  --coral-600: #d45740;
  --coral-500: #E86A50;
  --coral-400: #ef856e;
  --coral-300: #f5a894;
  --coral-100: #fdf0ed;

  --serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 3px rgba(26, 29, 35, 0.08);
  --shadow-md: 0 4px 20px rgba(26, 29, 35, 0.10);
  --shadow-lg: 0 12px 40px rgba(26, 29, 35, 0.14);
  --shadow-xl: 0 24px 60px rgba(26, 29, 35, 0.18);

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--charcoal-700);
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--coral-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--coral-600);
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--charcoal-800);
}

.text-coral {
  color: var(--coral-500);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--coral-500);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--coral-500);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 24px;
}

.section-sub {
  font-size: 1.1rem;
  color: var(--charcoal-500);
  max-width: 560px;
  line-height: 1.8;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--coral-500);
  color: #ffffff;
  border-color: var(--coral-500);
}

.btn-primary:hover {
  background: var(--coral-600);
  border-color: var(--coral-600);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 106, 80, 0.35);
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline-light {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-light:hover {
  background: #ffffff;
  color: var(--charcoal-800);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 16px;
}

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

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--charcoal-800);
}

.logo-text {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.logo-light .logo-text {
  color: #ffffff;
}

.logo-icon {
  flex-shrink: 0;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--charcoal-600);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.main-nav a:hover {
  color: var(--charcoal-800);
  background: var(--charcoal-100);
}

.nav-cta {
  background: var(--coral-500) !important;
  color: #ffffff !important;
  font-weight: 600 !important;
  margin-left: 8px;
}

.nav-cta:hover {
  background: var(--coral-600) !important;
  color: #ffffff !important;
  transform: translateY(-1px);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--charcoal-700);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--charcoal-900) 0%,
    #1e2a3a 25%,
    #2a3040 50%,
    #3a2828 75%,
    var(--charcoal-800) 100%
  );
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(232, 106, 80, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 60%, rgba(232, 106, 80, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 20%, rgba(100, 120, 160, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.6;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 120px 24px 80px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--coral-300);
  background: rgba(232, 106, 80, 0.12);
  border: 1px solid rgba(232, 106, 80, 0.25);
  padding: 8px 20px;
  border-radius: 50px;
  margin-bottom: 32px;
}

.hero-headline {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.12;
  color: #ffffff;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto 44px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

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

.stat-number {
  display: block;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

.hero-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.15);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.35);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-family: var(--sans);
  animation: float 2.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* --- Section Spacing --- */
section {
  padding: 100px 0;
}

/* --- About Section --- */
.about {
  background: #ffffff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image-wrap {
  position: relative;
}

.about-image-wrap img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about-accent {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 160px;
  height: 160px;
  background: var(--coral-100);
  border-radius: var(--radius-lg);
  z-index: -1;
}

.about-content .section-sub {
  margin-bottom: 20px;
}

.about-content p {
  color: var(--charcoal-600);
  margin-bottom: 18px;
  font-size: 1rem;
}

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 36px;
}

.value-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--charcoal-700);
}

/* --- Services Section --- */
.services {
  background: var(--charcoal-50);
}

.services .section-header {
  margin-bottom: 60px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 36px 28px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--coral-100);
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
}

.service-card h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--charcoal-800);
}

.service-card p {
  font-size: 0.92rem;
  color: var(--charcoal-500);
  line-height: 1.7;
}

/* --- Conditions Section --- */
.conditions {
  background: #ffffff;
}

.conditions-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.conditions-content .section-sub {
  margin-bottom: 36px;
}

.conditions-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 32px;
}

.conditions-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--charcoal-700);
}

.conditions-bullet {
  width: 8px;
  height: 8px;
  background: var(--coral-500);
  border-radius: 50%;
  flex-shrink: 0;
}

.conditions-image {
  position: relative;
}

.conditions-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 600px;
  object-fit: cover;
}

.conditions-image-accent {
  position: absolute;
  top: -16px;
  left: -16px;
  width: 120px;
  height: 120px;
  background: var(--coral-100);
  border-radius: var(--radius-md);
  z-index: -1;
}

/* --- Patients Section --- */
.patients {
  background: var(--charcoal-50);
}

.patients .section-header {
  margin-bottom: 60px;
}

.patients-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.patient-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 36px 32px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
}

.patient-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.patient-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--coral-100);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.patient-card h3 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--charcoal-800);
}

.patient-card p {
  font-size: 0.92rem;
  color: var(--charcoal-500);
  line-height: 1.7;
  margin-bottom: 10px;
}

.patient-card-note {
  font-size: 0.85rem !important;
  color: var(--charcoal-400) !important;
  font-style: italic;
}

/* --- CTA Section --- */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(
    135deg,
    var(--charcoal-900) 0%,
    #2a2525 50%,
    var(--charcoal-800) 100%
  );
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 50%, rgba(232, 106, 80, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 30%, rgba(232, 106, 80, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content .section-label {
  color: var(--coral-300);
}

.cta-content .section-label::before {
  background: var(--coral-300);
}

.cta-title {
  color: #ffffff;
  margin-bottom: 24px;
}

.cta-text {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
  margin-bottom: 44px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Contact Section --- */
.contact {
  background: #ffffff;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info .section-sub {
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 36px;
}

.contact-detail {
  display: flex;
  gap: 16px;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--coral-100);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.contact-detail strong {
  display: block;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--charcoal-800);
  margin-bottom: 4px;
}

.contact-detail p {
  font-size: 0.92rem;
  color: var(--charcoal-500);
  line-height: 1.6;
}

.contact-detail a {
  color: var(--coral-500);
}

.contact-detail a:hover {
  color: var(--coral-600);
  text-decoration: underline;
}

.contact-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* Contact Form */
.contact-form-wrap {
  background: var(--charcoal-50);
  border-radius: var(--radius-lg);
  padding: 44px;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-form-wrap h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--charcoal-800);
}

.contact-form-sub {
  font-size: 0.92rem;
  color: var(--charcoal-500);
  margin-bottom: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--charcoal-700);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--charcoal-800);
  background: #ffffff;
  border: 1.5px solid var(--charcoal-100);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--coral-500);
  box-shadow: 0 0 0 3px rgba(232, 106, 80, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--charcoal-400);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-success {
  text-align: center;
  padding: 40px 20px;
}

.form-success svg {
  margin: 0 auto 20px;
}

.form-success h4 {
  font-family: var(--serif);
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--charcoal-800);
}

.form-success p {
  font-size: 0.95rem;
  color: var(--charcoal-500);
  line-height: 1.7;
}

/* --- Footer --- */
.site-footer {
  background: var(--charcoal-900);
  color: rgba(255, 255, 255, 0.6);
  padding: 72px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-top: 20px;
  max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--coral-400);
  text-decoration: none;
}

.footer-contact p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 4px;
}

.footer-contact a {
  color: var(--coral-400);
}

.footer-contact a:hover {
  color: var(--coral-300);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 28px 0;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.35);
}

.footer-disclaimer {
  max-width: 500px;
  text-align: right;
}

/* --- Scroll Reveal (progressive enhancement) --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-grid,
  .conditions-layout,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .conditions-image {
    order: -1;
  }

  .conditions-image img {
    height: 400px;
  }

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

@media (max-width: 768px) {
  section {
    padding: 72px 0;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    background: #ffffff;
    box-shadow: var(--shadow-xl);
    padding: 100px 32px 40px;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 999;
  }

  .main-nav.open {
    transform: translateX(0);
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .main-nav a {
    padding: 14px 16px;
    font-size: 16px;
  }

  .nav-cta {
    margin-left: 0 !important;
    margin-top: 12px;
    text-align: center;
    justify-content: center;
  }

  .hero-content {
    padding: 100px 20px 80px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .hero-divider {
    width: 40px;
    height: 1px;
  }

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

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

  .conditions-list {
    grid-template-columns: 1fr;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form-wrap {
    padding: 28px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

  .cta-actions {
    flex-direction: column;
    width: 100%;
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

  .hero-headline {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-scroll {
    animation: none;
  }
}

/* --- Mobile nav overlay --- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}