/* ==========================================================================
   Dr. Ajith Thomas P — Main Stylesheet
   Custom CSS · Mobile-first · No framework
   ========================================================================== */

:root {
  --color-primary: #0d6e8a;
  --color-primary-dark: #094d61;
  --color-primary-light: #e8f4f8;
  --color-accent: #c0392b;
  --color-text: #1a2b3c;
  --color-text-muted: #5a7184;
  --color-border: #e8eef2;
  --color-surface: #ffffff;
  --color-surface-alt: #f7fafb;
  --color-white: #ffffff;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  --shadow-sm: 0 1px 3px rgba(26, 43, 60, 0.08);
  --shadow-md: 0 4px 16px rgba(26, 43, 60, 0.1);
  --shadow-lg: 0 12px 40px rgba(13, 110, 138, 0.12);

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: 0.2s ease;
  --header-h: 4rem;
}

/* Typography
   -------------------------------------------------------------------------- */
.heading-1 {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
}

.heading-2 {
  font-size: clamp(1.5rem, 3vw, 2.125rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

.heading-3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

.heading-4 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.text-lead {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

.text-body {
  color: var(--color-text-muted);
  line-height: 1.7;
}

.text-muted { color: var(--color-text-muted); }
.text-small { font-size: 0.875rem; }
.text-center { text-align: center; }

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

/* Spacing utilities
   -------------------------------------------------------------------------- */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

/* Layout
   -------------------------------------------------------------------------- */
.section {
  padding-block: var(--space-12);
}

.section--alt {
  background: var(--color-surface-alt);
}

.container--narrow {
  max-width: 48rem;
}

.section-header__sub {
  max-width: 40rem;
  margin-inline: auto;
  margin-top: var(--space-4);
}

.split {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

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

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }

@media (min-width: 48rem) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr 1fr; }
  .split--reverse .split__content { order: 2; }
  .split--reverse .split__media { order: 1; }
}

@media (min-width: 64rem) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.split__media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
}

/* Buttons
   -------------------------------------------------------------------------- */
.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn--block {
  display: flex;
  width: 100%;
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn--white:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.btn--outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn--outline-white:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

/* Header / Nav (mobile open state)
   -------------------------------------------------------------------------- */
.site-nav.is-open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4);
  box-shadow: var(--shadow-md);
}

.site-nav.is-open .site-nav__list {
  flex-direction: column;
  width: 100%;
}

.site-nav.is-open .site-nav__link {
  padding: var(--space-3) var(--space-4);
}

.site-nav__cta {
  margin-top: var(--space-4);
  width: 100%;
}

@media (min-width: 48rem) {
  .site-nav.is-open {
    position: static;
    flex-direction: row;
    border: 0;
    box-shadow: none;
    padding: 0;
  }
  .site-nav__cta { margin-top: 0; width: auto; }
}

/* Hero carousel
   -------------------------------------------------------------------------- */
.hero { position: relative; }

.hero-carousel .owl-stage-outer { overflow: hidden; }

.hero-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  padding-bottom: var(--space-6);
}

.hero-controls__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--color-primary);
  background: var(--color-white);
  color: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.25rem;
  transition: var(--transition);
}

.hero-controls__btn:hover,
.hero-controls__btn:focus-visible {
  background: var(--color-primary);
  color: var(--color-white);
  outline: none;
}

.hero-controls__play-icon { display: none; }
.hero-controls__btn.is-paused .hero-controls__pause-icon { display: none; }
.hero-controls__btn.is-paused .hero-controls__play-icon { display: inline; }

/* Page hero
   -------------------------------------------------------------------------- */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding-block: var(--space-10);
}

.page-hero .heading-1,
.page-hero .eyebrow,
.page-hero .text-lead,
.page-hero .breadcrumbs a,
.page-hero .breadcrumbs span {
  color: var(--color-white);
}

.page-hero__sub {
  max-width: 40rem;
  margin-top: var(--space-4);
  opacity: 0.9;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  font-size: 0.875rem;
  margin-bottom: var(--space-4);
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: var(--space-2);
  opacity: 0.6;
}

.breadcrumbs a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
}

.breadcrumbs a:hover { text-decoration: underline; }

/* Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__icon {
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.card__title {
  margin-bottom: var(--space-3);
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

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

.card__body {
  margin-bottom: var(--space-4);
  line-height: 1.65;
}

.card__link {
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--color-primary);
}

.card__link:hover { text-decoration: underline; }

.card--testimonial {
  display: flex;
  flex-direction: column;
}

.card--testimonial .card__body {
  flex: 1;
  font-style: italic;
}

.card__footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.card__author {
  display: block;
  font-style: normal;
  font-weight: 600;
  color: var(--color-text);
}

.stars {
  color: #f5a623;
  margin-bottom: var(--space-3);
  letter-spacing: 2px;
}

.card--blog .card__image-link {
  display: block;
  margin: calc(var(--space-6) * -1);
  margin-bottom: var(--space-4);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}

.card--blog img {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  transition: transform var(--transition);
}

.card--blog:hover img { transform: scale(1.03); }

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.badge {
  display: inline-block;
  padding: 0.125rem 0.625rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
}

/* Stats
   -------------------------------------------------------------------------- */
.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  text-align: center;
}

@media (min-width: 48rem) {
  .stats__grid { grid-template-columns: repeat(4, 1fr); }
}

.stats__number {
  display: block;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
}

.stats__label {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* CTA Banner
   -------------------------------------------------------------------------- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
}

.cta-banner__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: flex-start;
}

.cta-banner__title,
.cta-banner__text {
  color: var(--color-white);
}

.cta-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

@media (min-width: 48rem) {
  .cta-banner__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* FAQ
   -------------------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

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

.faq-item__question {
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
}

.faq-item__question::-webkit-details-marker { display: none; }

.faq-item__question::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-left: var(--space-4);
}

.faq-item[open] .faq-item__question::after { content: "−"; }

.faq-item__answer {
  padding: 0 var(--space-5) var(--space-4);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.faq-item__question:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: -3px;
}

/* Gallery
   -------------------------------------------------------------------------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

@media (min-width: 48rem) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
}

@media (min-width: 64rem) {
  .gallery-grid { grid-template-columns: repeat(4, 1fr); }
}

.gallery-grid__item {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.gallery-grid__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.gallery-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-grid__item:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

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

@media (min-width: 48rem) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
}

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

.video-card__thumb {
  display: block;
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 110, 138, 0.35);
  color: var(--color-white);
  font-size: 3rem;
  transition: background var(--transition);
}

.video-card__thumb:hover .video-card__play {
  background: rgba(13, 110, 138, 0.55);
}

.video-card__body {
  padding: var(--space-5);
}

/* Forms
   -------------------------------------------------------------------------- */
.contact-form,
.appointment-form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.form-input {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-text);
  min-height: 44px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 110, 138, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 7rem;
}

.form-feedback {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
}

.form-feedback.is-success {
  background: #e8f5e9;
  color: #2e7d32;
}

.contact-info {
  list-style: none;
}

.contact-info li {
  margin-bottom: var(--space-4);
}

.contact-info strong {
  display: block;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

/* Map
   -------------------------------------------------------------------------- */
.map-embed iframe {
  border: 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.map-embed__link {
  display: inline-flex;
}

/* About page extras
   -------------------------------------------------------------------------- */
.timeline {
  border-left: 3px solid var(--color-primary-light);
  padding-left: var(--space-6);
  margin-left: var(--space-2);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-6);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(var(--space-6) * -1 - 7px);
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 2px solid var(--color-white);
}

.timeline__year {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.875rem;
}

.credential-list {
  list-style: none;
}

.credential-list li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.credential-list li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

.patient-promise {
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.patient-promise ul {
  list-style: none;
  margin-top: var(--space-4);
}

.patient-promise li {
  padding: var(--space-2) 0;
  padding-left: var(--space-6);
  position: relative;
}

.patient-promise li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* Service detail
   -------------------------------------------------------------------------- */
.service-detail__benefits,
.service-detail__process {
  list-style: none;
}

.service-detail__benefits li,
.service-detail__process li {
  padding: var(--space-3) 0 var(--space-3) var(--space-6);
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.service-detail__benefits li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.service-detail__process li::before {
  content: counter(step);
  counter-increment: step;
  position: absolute;
  left: 0;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-detail__process {
  counter-reset: step;
}

/* Blog post
   -------------------------------------------------------------------------- */
.prose {
  max-width: 48rem;
  margin-inline: auto;
  line-height: 1.75;
  color: var(--color-text-muted);
}

.prose h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.prose p { margin-bottom: var(--space-4); }

.prose a { color: var(--color-primary); }

.article-header {
  text-align: center;
  max-width: 48rem;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.article-header time {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Legal pages
   -------------------------------------------------------------------------- */
.legal-content {
  max-width: 48rem;
  margin-inline: auto;
}

.legal-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.legal-content p,
.legal-content li {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}

.legal-content ul {
  padding-left: var(--space-6);
}

/* Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: #0f2438;
  color: rgba(255, 255, 255, 0.85);
  padding-block: var(--space-12);
  margin-top: auto;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.site-logo--footer { color: var(--color-white); }
.site-logo--footer .site-logo__text small { color: rgba(255,255,255,0.65); }
.site-logo--footer .site-logo__icon { color: #5ec4e0; }

.site-footer__grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .site-footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 64rem) {
  .site-footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}

.footer-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-2);
  font-size: 0.9375rem;
}

.social-links {
  display: flex;
  gap: var(--space-3);
}

.social-links__item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
  transition: background var(--transition);
}

.social-links__item:hover {
  background: var(--color-primary);
  text-decoration: none;
}

.site-footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.875rem;
}

.site-footer__bottom nav {
  display: flex;
  gap: var(--space-4);
}

@media (min-width: 48rem) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

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

/* Owl Carousel overrides
   -------------------------------------------------------------------------- */
.owl-carousel .owl-dots {
  text-align: center;
  padding-top: var(--space-4);
}

.owl-carousel .owl-dot span {
  width: 10px;
  height: 10px;
  background: var(--color-border);
  display: block;
  border-radius: 50%;
  margin: 4px;
}

.owl-carousel .owl-dot.active span {
  background: var(--color-primary);
}

.owl-carousel .owl-dot:focus-visible span {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Print
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .site-footer, .hero-controls, .nav-toggle, .cta-banner { display: none; }
  .section { padding-block: 1rem; }
}