/* =========================================================
   Design tokens
   Palette: warm off-white background + deep sage/teal accent,
   picked to match the clinic's existing brand color from the
   reference screenshots, not a generic default palette.
   ========================================================= */
:root {
  --color-bg: #F7F6F2;
  --color-bg-alt: #EFEDE6;
  --color-primary: #4F7A6C;
  --color-primary-dark: #3A5D51;
  --color-primary-pale: #E6EEEA;
  --color-text: #212B22;
  --color-text-muted: #5C6B60;
  --color-white: #FFFFFF;
  --color-border: #E1DED4;

  --font-main: 'Vazirmatn', Tahoma, Arial, sans-serif;

  --container-width: 1120px;
  --radius-pill: 999px;
  --radius-md: 14px;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;
  --space-5: 64px;
  --space-6: 96px;
}

/* =========================================================
   Reset / base
   ========================================================= */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.35;
}

p {
  margin: 0;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* Respect users who have asked for less motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* =========================================================
   Placeholder image blocks
   Swap each .img-placeholder <div> for a real <img> later.
   ========================================================= */
.img-placeholder {
  width: 100%;
  height: 100%;
  min-height: 220px;
  background: repeating-linear-gradient(
    135deg,
    var(--color-primary-pale),
    var(--color-primary-pale) 18px,
    #DCE8E1 18px,
    #DCE8E1 36px
  );
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2);
  color: var(--color-primary-dark);
  font-size: 0.85rem;
}

.img-placeholder::before {
  content: attr(data-label);
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-dark);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background: var(--color-primary-pale);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.9rem;
}

/* visible keyboard focus for accessibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary-dark);
  outline-offset: 3px;
}

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 246, 242, 0.92);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.brand-logo-placeholder {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-pale);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
}

/* =========================================================
   Hero / slider
   ========================================================= */
.hero {
  position: relative;
}

.slider {
  position: relative;
  height: min(72vh, 640px);
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}

.slide .img-placeholder {
  border-radius: 0;
  min-height: 100%;
}

.slide.is-active {
  opacity: 1;
}

.slider-dots {
  position: absolute;
  bottom: var(--space-3);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-1);
  z-index: 5;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.55);
  padding: 0;
  cursor: pointer;
}

.dot.is-active {
  background: var(--color-white);
}

.hero-content {
  text-align: center;
  padding-top: var(--space-5);
  padding-bottom: var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.hero-content h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  max-width: 20ch;
}

.hero-content p {
  color: var(--color-text-muted);
  max-width: 52ch;
  font-size: 1.05rem;
}

/* =========================================================
   Section title (shared)
   ========================================================= */
.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-5);
}

/* =========================================================
   Services
   ========================================================= */
.services {
  padding: var(--space-6) 0;
}

.service-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  align-items: center;
  margin-bottom: var(--space-5);
}

.service-row:last-child {
  margin-bottom: 0;
}

/* Alternate media/text sides for visual rhythm without numbering,
   since three unrelated services aren't really a numbered sequence */
.service-row.is-reversed .service-media {
  order: 2;
}

.service-media {
  aspect-ratio: 4 / 3;
}

.service-body h3 {
  font-size: 1.4rem;
  margin-bottom: var(--space-2);
}

.service-body p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  max-width: 46ch;
}

.service-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* =========================================================
   Doctors
   ========================================================= */
.doctors {
  padding: var(--space-6) 0;
  background: var(--color-bg-alt);
}

.doctor-card {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-4);
  align-items: center;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.doctor-media {
  aspect-ratio: 1;
}

.doctor-name {
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.doctor-specialty {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-primary-pale);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

.doctor-body p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  max-width: 56ch;
}

.doctor-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--space-5) 0 var(--space-3);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1.2fr;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-brand .brand-logo-placeholder {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
}

.footer-clinic-name {
  font-weight: 700;
}

.footer-links h4,
.footer-contact h4,
.footer-map h4 {
  font-size: 0.95rem;
  margin-bottom: var(--space-2);
  color: rgba(255, 255, 255, 0.85);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.85);
}

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

.footer-contact p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-1);
  font-size: 0.92rem;
}

.map-frame {
  width: 100%;
  height: 160px;
  border: 0;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
}

.map-note {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: var(--space-1);
}

.footer-copyright {
  text-align: center;
  padding-top: var(--space-3);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

/* =========================================================
   Back to top button
   ========================================================= */
.back-to-top {
  position: fixed;
  bottom: var(--space-3);
  left: var(--space-3);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, background-color 0.2s ease;
  z-index: 60;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
  .doctor-card {
    grid-template-columns: 1fr;
  }

  .doctor-media {
    max-width: 280px;
    margin: 0 auto;
  }

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

@media (max-width: 720px) {
  .service-row,
  .service-row.is-reversed {
    grid-template-columns: 1fr;
  }

  .service-row.is-reversed .service-media {
    order: 0;
  }

  .brand-name {
    font-size: 0.9rem;
  }

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