/* ============================================
   consultradiologist.com — shared styles
   Used by all section pages (neuro, chest, etc.)
   ============================================ */

:root {
  --blue: #214cce;
  --blue-dark: #173a9d;
  --panel: rgba(255,255,255,0.70);
  --panel-line: rgba(33,76,206,0.10);
  --text: #12233f;
  --muted: #405271;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  min-height: 100vh;
}

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

/* ── Page title ── */
h1 {
  color: var(--blue);
  text-align: center;
  font-size: 2.8rem;
  font-style: italic;
  font-weight: bold;
  padding: 1.5rem 0 0.5rem;
}

/* ── Section image buttons ── */
ul#navigation {
  list-style: none;
  text-align: center;
  padding: 1rem 0;
}

ul#navigation li {
  display: inline-block;
  margin: 6px;
}

ul#navigation li a img {
  transition: transform 0.15s, filter 0.15s;
}

ul#navigation li a:hover img {
  transform: translateY(-3px);
  filter: brightness(1.1);
}

/* ── Bar image ── */
.bar {
  display: block;
  margin: 0.5rem auto;
  width: 100%;
  max-width: 1200px;
  height: 16px;
}

/* ── Shared header ── */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  border-bottom: 0.5px solid var(--panel-line);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 12px rgba(33,76,206,0.08);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.site-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-dark);
  text-decoration: none;
  white-space: nowrap;
  padding: 14px 0;
  letter-spacing: 0.02em;
}

/* ── Main nav ── */
.main-nav { display: flex; align-items: stretch; }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: stretch; }
.main-nav > ul > li { position: relative; }

.main-nav > ul > li > a,
.main-nav > ul > li > button {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 16px 11px;
  color: var(--blue-dark);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}

.main-nav > ul > li > a:hover,
.main-nav > ul > li > button:hover,
.main-nav > ul > li.open > button {
  color: var(--blue);
  background: rgba(33,76,206,0.06);
}

.caret { font-size: 0.55rem; opacity: 0.6; transition: transform 0.2s; }
.main-nav > ul > li.open .caret { transform: rotate(180deg); }

/* ── Dropdowns ── */
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: rgba(255,255,255,0.98);
  border: 0.5px solid var(--panel-line);
  border-top: 2px solid var(--blue);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 8px 24px rgba(33,76,206,0.12);
  z-index: 2000;
}
.main-nav > ul > li.open > .dropdown { display: block; }

.dropdown a {
  display: block;
  padding: 8px 16px;
  color: var(--muted);
  font-size: 0.83rem;
  border-bottom: 0.5px solid rgba(33,76,206,0.07);
  transition: background 0.12s, color 0.12s;
}
.dropdown a:last-child { border-bottom: none; }
.dropdown a:hover { background: rgba(33,76,206,0.06); color: var(--blue-dark); }

.drop-section {
  padding: 6px 16px 3px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--blue);
  border-bottom: 0.5px solid rgba(33,76,206,0.1);
  margin-top: 4px;
}

/* ── Hamburger ── */
#hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
#hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--blue-dark);
  border-radius: 2px;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  #hamburger { display: flex; }
  .main-nav { display: none; width: 100%; }
  .main-nav.open {
    display: block;
    background: rgba(255,255,255,0.98);
    border-top: 0.5px solid var(--panel-line);
  }
  .main-nav ul { flex-direction: column; }
  .main-nav > ul > li > a,
  .main-nav > ul > li > button {
    width: 100%; justify-content: space-between; padding: 12px 18px;
  }
  .dropdown {
    position: static; border: none; border-radius: 0;
    box-shadow: none; border-top: 0.5px solid var(--panel-line);
    background: rgba(33,76,206,0.03);
  }
  .topbar { flex-wrap: wrap; }
}