:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0ea5e9;
  --primary-contrast: #ffffff;
  --surface: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
}

:root.dark {
  --bg: #0b1020;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #38bdf8;
  --primary-contrast: #ffffff;
  --surface: #0f172a;
  --card: #111827;
  --border: #1f2937;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

.container { width: min(1100px, 92%); margin-inline: auto; }
.container.narrow { width: min(800px, 92%); }

.skip-link {
  position: absolute; left: -9999px; top: auto;
  background: var(--primary); color: var(--primary-contrast);
  padding: .5rem .75rem; border-radius: .5rem;
}
.skip-link:focus { left: .5rem; top: .5rem; z-index: 999; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
:root.dark .site-header { background: rgba(15,23,42,.7); }

.nav {
  display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 1rem;
  padding: .75rem 0;
}
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; color: var(--text); }
.brand span { letter-spacing: .2px; }
.site-menu { display: flex; gap: 1rem; align-items: center; }
.site-menu a { padding: .35rem .5rem; border-radius: .5rem; }
.nav-toggle { display: none; }

.mode-toggle { border: 1px solid var(--border); background: var(--surface); border-radius: .5rem; padding: .4rem .6rem; cursor: pointer; }

.btn {
  background: var(--primary); color: var(--primary-contrast);
  padding: .75rem 1rem; border-radius: .75rem; display: inline-block; font-weight: 600; border: none;
}
.btn:hover { filter: brightness(0.95); text-decoration: none; }
.btn.small { padding: .5rem .75rem; }
.btn.outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }

/* HERO (full-bleed image with overlay content + booking button) */
.hero.hero-photo {
  position: relative;
  min-height: clamp(380px, 60vh, 680px);
  background-image: url('/assets/img/hero-doctor-placeholder.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.55), rgba(0,0,0,.15) 60%, rgba(0,0,0,0));
  display: grid; place-items: center;
}
.hero-content {
  color: #fff;
  padding: 2.5rem 0;
}
.hero-content h1 { line-height: 1.2; font-size: clamp(1.8rem, 2vw + 1rem, 2.6rem); margin: 0 0 .75rem; }
.hero-content p { max-width: 58ch; margin: 0 0 1rem; color: #eef2ff; }
.hero-content .btn { box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.badges { display: flex; gap: .75rem; padding: 0; list-style: none; flex-wrap: wrap; margin-top: 1rem; }
.badges li { background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.25); padding: .4rem .6rem; border-radius: .5rem; color: #fff; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 1rem; padding: 1rem; }

.cta { padding: 2rem 0; }
.cta-accent { background: linear-gradient(90deg, rgba(14,165,233,.1), transparent 70%); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.center { text-align: center; }

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

.site-footer { margin-top: 3rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }
.site-footer .sub { border-top: 1px solid var(--border); margin-top: 1rem; padding: .75rem 0; color: var(--muted); }

.form { display: grid; gap: 1rem; }
.field { display: grid; gap: .4rem; }
.field.two { grid-template-columns: 1fr 1fr; gap: 1rem; }
.field input, .field textarea, .field select {
  padding: .7rem .8rem; border-radius: .6rem; border: 1px solid var(--border); background: var(--card); color: var(--text);
}
.field .checkbox { display: flex; align-items: center; gap: .6rem; }

.error { color: #b91c1c; min-height: 1.2em; }
.success { background: #ecfdf5; border: 1px solid #10b981; padding: 1rem; border-radius: .75rem; }
.hidden { display: none; }
.muted { color: var(--muted); }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.pricing table { width: 100%; border-collapse: collapse; }
.pricing th, .pricing td { padding: .6rem; border-bottom: 1px solid var(--border); text-align: left; }

.slider { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .5rem; }
.slides { overflow: hidden; }
.slide { min-width: 100%; transition: transform .3s ease; }
.slider-prev, .slider-next { border: 1px solid var(--border); background: var(--surface); border-radius: .5rem; padding: .4rem .6rem; cursor: pointer; }

.photo { margin: 1rem 0; }

/* Responsive improvements */
@media (max-width: 992px) {
  .cards { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .site-menu { display: none; position: absolute; top: 60px; right: 1rem; background: var(--card); border: 1px solid var(--border); padding: .75rem; border-radius: .75rem; flex-direction: column; }
  .nav-toggle { display: inline-block; border: 1px solid var(--border); background: var(--surface); padding: .4rem .6rem; border-radius: .5rem; }
  .site-menu.open { display: flex; }
  .hero.hero-photo { min-height: 56vh; }
  .hero-content p { max-width: none; }
}

/* Accessibility: clear focus outline */
.btn:focus-visible, .nav-toggle:focus-visible, .mode-toggle:focus-visible, a:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

/* Ensure sufficient contrast on hero buttons in dark overlay */
.hero-content .btn { color: var(--primary-contrast); }

/* --- Visibility fixes for toggle buttons --- */
.nav-toggle, .mode-toggle {
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.08);
}
:root.dark .nav-toggle, :root.dark .mode-toggle {
  background: #0c142a; /* slightly lighter than --surface for contrast */
  border-color: #22304a; /* higher contrast border in dark */
  box-shadow: 0 1px 2px rgba(0,0,0,.4), 0 6px 16px rgba(0,0,0,.35);
}

/* Ensure menu links remain readable in both modes */
.site-menu a { color: var(--text); }
.site-menu a:hover { background: var(--surface); text-decoration: none; }

/* Make the mobile flyout stand out in dark mode */
:root.dark .site-menu {
  background: #101a34; /* distinct from header */
  border-color: #22304a;
}