/* ==========================================================================
   Dr Kush Nandwana — Doctor Profile Website
   styles.css — Single stylesheet, mobile-first, CSS custom properties
   ========================================================================== */

/* --------------------------------------------------------------------------
   T007: @font-face — Inter self-hosted (WOFF2, font-display: swap)
   -------------------------------------------------------------------------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/Inter-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/Inter-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/Inter-SemiBold.woff2') format('woff2');
}

/* --------------------------------------------------------------------------
   T006: CSS Design System — custom properties (:root)
   -------------------------------------------------------------------------- */
:root {
  /* Brand colours */
  --color-primary: #1A6DB5;
  --color-primary-dark: #155A96;
  --color-primary-light: #E8F2FB;

  /* Backgrounds */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;

  /* Text */
  --color-text: #1F2937;
  --color-text-light: #6B7280;
  --color-text-muted: #9CA3AF;

  /* UI */
  --color-border: #E5E7EB;
  --color-white: #FFFFFF;

  /* Spacing scale */
  --space-1: 0.25rem;   /* 4px  */
  --space-2: 0.5rem;    /* 8px  */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* Typography scale */
  --text-xs: 0.75rem;   /* 12px */
  --text-sm: 0.875rem;  /* 14px */
  --text-base: 1rem;    /* 16px */
  --text-lg: 1.125rem;  /* 18px */
  --text-xl: 1.25rem;   /* 20px */
  --text-2xl: 1.5rem;   /* 24px */
  --text-3xl: 1.875rem; /* 30px */
  --text-4xl: 2.25rem;  /* 36px */
  --text-5xl: 3rem;     /* 48px */

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);

  /* Breakpoints (reference only — use in media queries) */
  --bp-md: 768px;
  --bp-lg: 1024px;

  /* Layout */
  --max-width: 1160px;
  --section-padding: var(--space-16) var(--space-4);
}

/* --------------------------------------------------------------------------
   T008: CSS Reset & Base Typography
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
}

address {
  font-style: normal;
}

/* Section headings */
.section-heading {
  font-size: var(--text-3xl);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.section-subheading {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  margin-bottom: var(--space-8);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* Section wrapper */
.section {
  padding: var(--space-12) 0;
}
.section--alt {
  background-color: var(--color-bg-alt);
}

/* Visually-hidden (accessibility) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   T011: Navigation Bar
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

.nav-logo {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  line-height: 1.2;
}

.nav-logo--with-image {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.nav-logo__img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.nav-logo__text {
  display: block;
}

.nav-logo span,
.nav-logo__subtitle {
  display: block;
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 0.03em;
}

@media (max-width: 767px) {
  .nav-logo__img {
    display: none;
  }
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  /* Animated slide-down */
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding: 0 var(--space-4);
  pointer-events: none;
  transition: max-height 0.3s ease, opacity 0.25s ease, padding 0.25s ease;
}
.nav-menu.is-open {
  max-height: 400px;
  opacity: 1;
  padding: var(--space-4) var(--space-4) var(--space-5);
  pointer-events: auto;
}
.nav-menu a {
  color: var(--color-text);
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 500;
}
.nav-menu a:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  text-decoration: none;
}

/* Nav CTA button */
.nav-cta {
  display: none;
}

/* Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}

/* Hamburger → X when menu is open */
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
    flex-direction: row;
    position: static;
    border: none;
    padding: 0;
    box-shadow: none;
    background: transparent;
    gap: var(--space-1);
    /* Reset animation */
    max-height: none;
    overflow: visible;
    opacity: 1;
    transition: none;
    pointer-events: auto;
  }
  .nav-toggle {
    display: none;
  }
  .nav-cta {
    display: inline-flex;
  }
}

/* Mobile nav backdrop overlay (created via JS) */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.32);
  z-index: 98;
}
.nav-overlay.is-open {
  display: block;
  animation: navOverlayIn 0.2s ease;
}
@keyframes navOverlayIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@media (min-width: 768px) {
  .nav-overlay { display: none !important; }
}

/* --------------------------------------------------------------------------
   T011: Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-text);
  color: #D1D5DB;
  padding: var(--space-8) 0 var(--space-6);
}

.footer-inner {
  display: grid;
  gap: var(--space-6);
}

.footer-brand .footer-name {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-1);
}
.footer-brand .footer-title {
  font-size: var(--text-sm);
  color: #9CA3AF;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-links a {
  color: #D1D5DB;
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.footer-links a:hover {
  color: var(--color-white);
  text-decoration: none;
}

.footer-bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid #374151;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-bottom p {
  font-size: var(--text-xs);
  color: #9CA3AF;
}
.footer-disclaimer {
  font-size: var(--text-xs);
  color: #6B7280;
  border-left: 2px solid #374151;
  padding-left: var(--space-3);
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: auto 1fr;
  }
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* --------------------------------------------------------------------------
   T013: Sticky Mobile Bar (Call + WhatsApp — mobile only)
   -------------------------------------------------------------------------- */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
  padding-bottom: env(safe-area-inset-bottom);
}

.sticky-bar__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-weight: 600;
  font-size: var(--text-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.15s;
}
.sticky-bar__btn:hover {
  opacity: 0.9;
  text-decoration: none;
}
.sticky-bar__btn--call {
  background-color: var(--color-primary);
  color: var(--color-white);
}
.sticky-bar__btn--whatsapp {
  background-color: #25D366;
  color: var(--color-white);
}

/* Hide sticky bar on desktop — it's mobile-only */
@media (min-width: 769px) {
  .sticky-bar {
    display: none;
  }
}

/* ==========================================================================
   PHASE 3 — US1: Hero + Trust Bar + Contact
   ========================================================================== */

/* --------------------------------------------------------------------------
   T017: Hero Section
   -------------------------------------------------------------------------- */
.hero {
  background: linear-gradient(150deg, #EBF4FF 0%, #FFFFFF 55%, #F8FAFC 100%);
  padding: var(--space-10) 0 var(--space-12);
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: center;
}

.hero-image-wrap {
  flex-shrink: 0;
  width: 220px;
}
.hero-image-wrap picture,
.hero-image-wrap img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  background-color: var(--color-border);
  display: block;
  box-shadow: 0 0 0 5px rgba(26, 109, 181, 0.1), 0 20px 48px rgba(0, 0, 0, 0.12);
}

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

.hero-eyebrow {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.hero-specialisation {
  font-size: var(--text-xl);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.hero-tagline {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  margin-bottom: var(--space-6);
  max-width: 480px;
  margin-inline: auto;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-base);
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  text-decoration: none;
}
.btn:hover {
  text-decoration: none;
}
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(26, 109, 181, 0.3);
}
.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 6px 18px rgba(26, 109, 181, 0.4);
  transform: translateY(-1px);
}
.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background-color: var(--color-primary-light);
}
.btn--whatsapp {
  background-color: #25D366;
  color: var(--color-white);
  border-color: #25D366;
}
.btn--whatsapp:hover {
  background-color: #1EB858;
}
.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

@media (min-width: 768px) {
  .hero-inner {
    flex-direction: row-reverse;
    align-items: center;
    gap: var(--space-10);
  }
  .hero-image-wrap {
    width: 280px;
  }
  .hero-text {
    text-align: left;
    flex: 1;
  }
  .hero-actions {
    justify-content: flex-start;
  }
  .hero-tagline {
    margin-inline: 0;
  }
}

@media (min-width: 1024px) {
  .hero-image-wrap {
    width: 320px;
  }
  .hero-title {
    font-size: var(--text-5xl);
  }
}

/* --------------------------------------------------------------------------
   T019: Trust Bar
   -------------------------------------------------------------------------- */
.trust-bar {
  background-color: var(--color-primary);
  padding: var(--space-6) 0;
}

.trust-bar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.trust-stat {
  text-align: center;
  color: var(--color-white);
  padding: var(--space-4);
}
.trust-stat__value {
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: 1;
  margin-bottom: var(--space-1);
}
.trust-stat__label {
  font-size: var(--text-sm);
  opacity: 0.85;
}

@media (min-width: 768px) {
  .trust-bar-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --------------------------------------------------------------------------
   T021: Contact / Appointment Section
   -------------------------------------------------------------------------- */
.contact-inner {
  display: grid;
  gap: var(--space-10);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.contact-link-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-size: var(--text-lg);
}
.contact-link-item a {
  color: var(--color-primary);
  font-weight: 500;
}
.contact-link-item a:hover {
  text-decoration: underline;
}

.contact-form {
  position: relative;
  background-color: var(--color-bg-alt);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: var(--space-5);
}
.form-group label {
  display: block;
  font-weight: 500;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,109,181,0.15);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* T021: Honeypot — off-screen, NOT display:none */
.hp-field {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-confirm {
  display: none;
  margin-top: var(--space-4);
  padding: var(--space-4);
  background-color: #ECFDF5;
  border: 1px solid #6EE7B7;
  border-radius: var(--radius-md);
  color: #065F46;
  font-size: var(--text-sm);
  line-height: 1.6;
}
.form-confirm.visible {
  display: block;
}
.form-confirm a {
  color: #25D366;
  font-weight: 600;
}

@media (min-width: 768px) {
  .contact-inner {
    grid-template-columns: 1fr 1.4fr;
    align-items: start;
  }
}

/* ==========================================================================
   PHASE 5 — US3: About + Experience + Education + Why Choose
   ========================================================================== */

/* --------------------------------------------------------------------------
   T038: About Section
   -------------------------------------------------------------------------- */
.about-inner {
  display: grid;
  gap: var(--space-6);
}

.about-bio {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.about-highlight-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-base);
}
.about-highlight-item::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

@media (min-width: 768px) {
  .about-inner {
    grid-template-columns: 1fr 1fr;
  }
}

/* --------------------------------------------------------------------------
   T040: Professional Experience Timeline
   -------------------------------------------------------------------------- */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  position: relative;
}
.experience-list::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: var(--color-border);
}

.experience-card {
  display: flex;
  gap: var(--space-5);
  position: relative;
}
.experience-card::before {
  content: '';
  width: 14px;
  height: 14px;
  background-color: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
  z-index: 1;
}
.experience-content {
  flex: 1;
}
.experience-role {
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--color-text);
}
.experience-institution {
  font-size: var(--text-base);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-1);
}
.experience-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-2);
}
.experience-highlight {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-style: italic;
}

@media (min-width: 768px) {
  .experience-list::before {
    left: 20px;
  }
  .experience-card::before {
    width: 18px;
    height: 18px;
    margin-top: 5px;
  }
}

/* --------------------------------------------------------------------------
   T043: Education + Memberships + Why Choose
   -------------------------------------------------------------------------- */
.edu-mem-grid {
  display: grid;
  gap: var(--space-8);
}

.edu-list,
.mem-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.edu-item {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-4);
}
.edu-item__degree {
  font-weight: 600;
  font-size: var(--text-base);
}
.edu-item__institution {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.mem-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid rgba(26,109,181,0.2);
}

.mem-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (min-width: 768px) {
  .edu-mem-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Why Choose bullets */
.why-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.why-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-base);
  line-height: 1.5;
}
.why-item::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  min-width: 28px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  border-radius: 50%;
  font-size: var(--text-sm);
  margin-top: 2px;
}

/* ==========================================================================
   PHASE 7 — Remaining Sections: Services + Video + Testimonials + Clinic
   ========================================================================== */

/* --------------------------------------------------------------------------
   T048: Services / Areas of Expertise Grid
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-top-color 0.22s ease;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-top-color: var(--color-primary);
}
.service-icon {
  font-size: 2rem;
  line-height: 1;
}
.service-name {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
}
.service-description {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  flex: 1;
}
.service-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.service-link:hover {
  text-decoration: underline;
}

@media (min-width: 540px) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --------------------------------------------------------------------------
   T015: Services Carousel
   -------------------------------------------------------------------------- */
.carousel-wrapper {
  position: relative;
}
.carousel-viewport {
  overflow: hidden;
}

/* Track: flex layout active only when JS has initialised */
html.js-carousel .carousel-track {
  display: flex;
  flex-wrap: nowrap;
  transition: transform 0.35s ease;
}
html.js-carousel .carousel-track .service-card {
  flex: 0 0 100%;
  min-width: 0;
}
@media (min-width: 540px) {
  html.js-carousel .carousel-track .service-card {
    flex: 0 0 50%;
  }
}
@media (min-width: 1024px) {
  html.js-carousel .carousel-track .service-card {
    flex: 0 0 25%;
  }
}

/* Controls row (prev arrow | dots | next arrow) */
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

/* Arrow buttons */
.carousel-arrow {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  width: 2.5rem;
  height: 2.5rem;
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s, border-color 0.2s, color 0.2s;
  color: var(--color-text);
}
.carousel-arrow:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.carousel-arrow--disabled,
.carousel-arrow:disabled {
  opacity: 0.35;
  cursor: default;
}

/* Dot indicators */
.carousel-dots {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
}
.carousel-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, transform 0.2s;
}
.carousel-dot--active {
  background: var(--color-primary);
  transform: scale(1.3);
}

/* --------------------------------------------------------------------------
   T050: Video / Patient Education
   -------------------------------------------------------------------------- */
.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.video-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

/* padding-top: 56.25% — 16:9 ratio — NOT aspect-ratio (Safari < 15 compat) */
.video-wrapper {
  position: relative;
  padding-top: 56.25%;
  width: 100%;
  background-color: #111;
}
.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-meta {
  padding: var(--space-3);
}
.video-badge {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.video-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.video-fallback {
  font-size: var(--text-sm);
  color: var(--color-primary);
}

@media (min-width: 640px) {
  .video-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 1024px) {
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.video-channel-cta {
  text-align: center;
  margin-top: var(--space-6);
}

/* --------------------------------------------------------------------------
   T052: Testimonials
   -------------------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.testimonial-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: var(--space-3);
  left: var(--space-5);
  font-size: 4rem;
  color: var(--color-primary-light);
  line-height: 1;
  font-family: Georgia, serif;
}

.testimonial-body {
  margin-top: var(--space-6);
}
.testimonial-quote {
  font-style: italic;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.testimonial-stars {
  color: #F59E0B;
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.testimonial-cite {
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  font-weight: 500;
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --------------------------------------------------------------------------
   T054: Clinic Details
   -------------------------------------------------------------------------- */
.clinic-inner {
  display: grid;
  gap: var(--space-6);
}

.clinic-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.clinic-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}
.clinic-info-item__label {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}
.clinic-info-item__value {
  font-size: var(--text-base);
  color: var(--color-text);
}

.clinic-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  min-height: 280px;
  background-color: var(--color-bg-alt);
}
.clinic-map iframe {
  width: 100%;
  height: 320px;
  border: 0;
  display: block;
}
.clinic-map-fallback {
  padding: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

@media (min-width: 768px) {
  .clinic-inner {
    grid-template-columns: 1fr 1.2fr;
    align-items: start;
  }
}

/* ==========================================================================
   PHASE 6 — US4: FAQ
   ========================================================================== */

/* --------------------------------------------------------------------------
   T045: FAQ Section
   -------------------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 760px;
  margin-inline: auto;
}

details.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  overflow: hidden;
}
details.faq-item[open] {
  border-color: var(--color-primary);
}

details.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}
details.faq-item summary::-webkit-details-marker {
  display: none;
}
details.faq-item summary::after {
  content: '﹢';
  font-size: var(--text-xl);
  color: var(--color-primary);
  flex-shrink: 0;
  margin-left: var(--space-4);
  transition: transform 0.2s;
}
details.faq-item[open] summary::after {
  content: '−';
}

.faq-answer {
  padding: 0 var(--space-5) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: 1.7;
}

.faq-cta {
  text-align: center;
  margin-top: var(--space-8);
}

/* ==========================================================================
   SERVICE PAGE STYLES (T027)
   ========================================================================== */
.page-hero {
  background-color: var(--color-bg-alt);
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
}
.page-hero .breadcrumb {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-4);
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}
.page-hero .breadcrumb a {
  color: var(--color-primary);
}
.page-hero .breadcrumb span {
  color: var(--color-text-muted);
}
.page-hero h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}
.page-hero .doctor-ref {
  font-size: var(--text-lg);
  color: var(--color-text-light);
}

.service-content {
  padding: var(--space-12) 0;
}
.service-content .prose {
  max-width: 760px;
}
.service-content h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
  margin-top: var(--space-8);
  color: var(--color-text);
}
.service-content h2:first-child {
  margin-top: 0;
}
.service-content p {
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.service-content ul {
  list-style: disc;
  padding-left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--color-text-light);
  margin-bottom: var(--space-6);
}
.service-content ul li {
  line-height: 1.6;
}

.service-cta-block {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding: var(--space-8);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(26,109,181,0.2);
  align-items: center;
}
.service-cta-block p {
  flex: 1;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin: 0;
}

/* ==========================================================================
   404 PAGE
   ========================================================================== */
.not-found-section {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: var(--space-20) 0;
  text-align: center;
}
.not-found-inner {
  max-width: 540px;
  margin: 0 auto;
}
.not-found-code {
  font-size: 7rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.not-found-title,
.not-found-section h1 {
  font-size: var(--text-4xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.not-found-message,
.not-found-section p {
  font-size: var(--text-xl);
  color: var(--color-text-light);
  margin-bottom: var(--space-8);
}
.not-found-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}
.not-found-help {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.font-semibold { font-weight: 600; }

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}