/* ORAL THRUSH PAGE — SINGLE CSS (independent) */

/* RESET & BASE */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html:focus-within { scroll-behavior: smooth; }
body { min-height: 100vh; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; }
a { color: inherit; text-decoration: none; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
:where(p, ul, ol) + :where(p, ul, ol) { margin-top: 1rem; }

/* THEME */
:root{
  --brand-700:#236b51; --brand-600:#2b7a5c; --brand-500:#3a8c6c; --brand-400:#5aa184;
  --bg:#ffffff; --surface:#ffffff; --text:#0f172a; --muted:#64748b; --border:#e5e7eb;
  --radius-1:.375rem; --radius-2:.75rem; --radius-3:1.25rem;
  --shadow-1:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.1);
  --shadow-2:0 12px 40px rgba(16,24,40,.12);
  --container-max:1200px;
  --footer-bg:#0b1220; --footer-text:#e5e7eb;
}
html { font-size: 100%; }
body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans",
               "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6;
}
h1, h2, h3, h4 { line-height: 1.2; font-weight: 800; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 2.5vw + 1rem, 3rem); }
h2 { font-size: clamp(1.5rem, 1.5vw + 0.75rem, 2rem); font-weight: 700; }
h3 { font-size: clamp(1.25rem, 1vw + 0.5rem, 1.5rem); font-weight: 700; }
h4 { font-size: clamp(1.05rem, .8vw + .6rem, 1.2rem); font-weight: 700; }
p, li { color: var(--muted); }
.tiny{ font-size:.925rem; } .muted{ color:var(--muted); }

/* UTILITIES */
.container{ max-width: var(--container-max); margin-inline: auto; padding-inline: clamp(1rem, 3vw, 2rem); }
.visually-hidden{ position:absolute !important; clip:rect(1px,1px,1px,1px); clip-path:inset(50%); width:1px; height:1px; overflow:hidden; white-space:nowrap; }
.skip-link{ position:absolute; left:-9999px; }
.skip-link:focus{ position:fixed; left:1rem; top:1rem; padding:.5rem .75rem; background:#fff; border:2px solid var(--brand-600); border-radius:.5rem; z-index:9999; }

/* HEADER + NAV */
.site-header{
  position: sticky; top: 0; z-index: 60; background: var(--bg);
  border-bottom: 1px solid color-mix(in oklab, var(--border) 70%, transparent);
  box-shadow: 0 .5px 0 rgba(16,24,40,.04);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:1.5rem; padding-block:.55rem; }
.brand{ display:flex; align-items:center; gap:.75rem; line-height:1; }
.brand-logo{ width: 260px; height:auto; }

.primary-nav{ display:block; }
.nav-list{ display:flex; align-items:center; gap:clamp(.75rem, 2.5vw, 2rem); }
.nav-link{
  display:inline-block; padding:.3rem .25rem; font-weight:500; color:var(--muted);
  border-radius:.5rem; transition:color .2s ease, box-shadow .2s ease;
}
.nav-link:hover{ color:var(--text); }
.nav-link[aria-current="page"]{ color:var(--brand-600); text-decoration:underline; text-decoration-thickness:2px; text-underline-offset:6px; font-weight:600; }

/* Hamburger */
.nav-toggle{
  appearance:none; background:transparent; border:0; padding:.6rem;
  margin-left:auto; width:48px; height:40px; border-radius:12px;
  display:none; align-items:center; justify-content:center; flex-direction: column; gap:6px;
}
.nav-toggle::before, .nav-toggle .nav-toggle-bar, .nav-toggle::after{
  content:""; display:block; width:28px; height:2px; background:#0f172a; border-radius:2px;
}
@media (max-width:900px){
  .nav-toggle{ display:inline-flex; }
  .primary-nav{
    position:fixed; inset:56px 0 auto 0; background:#fff; border-top:1px solid var(--border);
    transform:translateY(-110%); opacity:0; pointer-events:none; transition:transform .25s ease, opacity .25s ease;
  }
  body.nav-open .primary-nav{ transform:translateY(0); opacity:1; pointer-events:auto; }
  .nav-list{ flex-direction:column; align-items:flex-start; gap:0; padding:.5rem clamp(1rem, 3vw, 2rem); }
  .nav-link{ width:100%; padding:.9rem 0; display:block; }
}

/* BUTTONS */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5rem;
  padding:.875rem 1.25rem; font-weight:600; border-radius:999px; border:1px solid transparent;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease, transform .05s ease;
}
.btn-primary{ background:var(--brand-600); color:#fff; box-shadow:var(--shadow-1); }
.btn-primary:hover{ background:color-mix(in oklab, var(--brand-600) 85%, black); }
.btn-primary:active{ transform:translateY(1px); }
.btn-outline{
  background:#fff; color:var(--brand-600);
  border:1px solid color-mix(in oklab, var(--brand-600) 70%, #fff);
  box-shadow:var(--shadow-1);
}
.btn-outline:hover{ background:color-mix(in oklab, var(--brand-600) 6%, #fff); }

/* HERO with IMG */
.hero--img{
  position:relative; min-height: clamp(520px, 60vh, 680px);
  display:grid; place-items:center; overflow:hidden;
}
.hero--img .hero-inner{
  position:relative; z-index:1; text-align:center; max-width:48rem;
  padding-block: clamp(3rem, 8vw, 6rem); padding-inline: clamp(1rem, 4vw, 2rem);
}
.hero-figure{
  position:absolute; left:50%; transform: translateX(-50%);
  top: clamp(36px, 5vh, 72px);
  width: min(92%, var(--container-max));
  height: clamp(260px, 38vh, 420px);
  z-index:0; border-radius: var(--radius-3);
  box-shadow: var(--shadow-2); overflow:hidden;
}
.hero-img{ width:100%; height:100%; object-fit:cover; display:block; }
.hero-figure::after{
  content:""; position:absolute; inset:0;
  background: linear-gradient(0deg, rgba(255,255,255,.78), rgba(255,255,255,.78));
  pointer-events:none;
}

/* Tabs */
.ot-tabs{ padding-block: clamp(1.25rem, 4vw, 2rem); }
.tablist{ display:flex; gap:.5rem; border-bottom:1px solid var(--border); margin-bottom:.75rem; }
.tab{
  appearance:none; border:0; background:transparent; padding:.6rem .9rem;
  font-weight:700; color:var(--muted); border-radius:.75rem .75rem 0 0; cursor:pointer;
}
.tab.is-active{ color:#0f172a; background:color-mix(in oklab, var(--brand-600) 8%, #fff); }
.tabpanel{ display:none; }
.tabpanel.is-active{ display:block; }

/* Overview figure */
.ot-figure{ margin-bottom: clamp(1rem, 3vw, 1.5rem); }
.ot-img{
  width:100%; aspect-ratio:4/3; object-fit:cover;
  border-radius: var(--radius-3); box-shadow: var(--shadow-2);
}

/* Info cards */
.intro .card{
  background:#fff;
  border:2px solid color-mix(in oklab, var(--brand-600) 38%, #fff);
  border-radius: var(--radius-3);
  padding: clamp(1rem, 2.5vw, 1.25rem);
  box-shadow: var(--shadow-2);
}
.intro{ display:grid; gap: clamp(.9rem, 2.6vw, 1.1rem); }
.bullets{ list-style: disc; margin-left:1.1rem; }

/* Medicine learn-more card */
.meds{ display:grid; gap: clamp(.85rem, 2.6vw, 1.25rem); margin-top:.5rem; }
.med-card{
  display:grid; grid-template-columns: minmax(220px, 360px) 1fr;
  gap: clamp(1rem, 3vw, 1.5rem); align-items:start;
  background:#fff;
  border:1px solid color-mix(in oklab, var(--border) 80%, transparent);
  border-radius: var(--radius-3);
  padding: clamp(1rem, 2.5vw, 1.25rem);
  box-shadow: var(--shadow-2);
}
.med-media{ min-width:0; }
.med-img{
  width:100%; aspect-ratio:4/3; object-fit:cover;
  border-radius: var(--radius-2); box-shadow: var(--shadow-1);
}
.med-title{ margin-bottom:.35rem; color:#0f172a; }
.links{ display:flex; gap:.5rem; flex-wrap:wrap; margin-top:.5rem; }

/* Form layout + visuals */
.pc-card{
  background:#fff; border:1px solid color-mix(in oklab, var(--border) 80%, transparent);
  border-radius: var(--radius-3); box-shadow: var(--shadow-2);
  padding: clamp(1rem, 2.5vw, 1.25rem);
}
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(.75rem,2.5vw,1rem); }
@media (max-width:800px){ .grid-2{ grid-template-columns:1fr; } }
.field{ display:block; }
.field > label{ font-weight:700; color:#0f172a; display:block; margin-bottom:.35rem; }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="date"],
.field input[type="file"],
.field textarea{
  width:100%; border:1px solid var(--border); border-radius:.6rem; padding:.65rem .75rem; background:#fff;
}
.field textarea{ min-height:120px; }
.choices{ display:flex; gap:1rem; flex-wrap:wrap; }
.agree{ display:flex; gap:.6rem; align-items:flex-start; }
.agree input{ margin-top:.25rem; }

.soft{ border:0; height:1px; background:var(--border); margin:1rem 0; }
.elig-msg{
  margin-top:.6rem; padding:.75rem .9rem; border-radius:.75rem;
  background: color-mix(in oklab, #ef4444 10%, #fff);
  border:1px solid color-mix(in oklab, #ef4444 35%, #fff);
  color:#7f1d1d; font-weight:600;
}
.actions{ margin-top:1rem; }
.submitted-panel h3{ color:#0f172a; margin-bottom:.25rem; }

/* Invalid-state visuals */
.field.invalid > label { color: #b91c1c; font-weight: 700; }
.field.invalid input,
.field.invalid textarea{
  border-color: #ef4444 !important;
  background: color-mix(in oklab, #ef4444 9%, #fff);
  outline: none;
}
.field.invalid input:focus,
.field.invalid textarea:focus{
  box-shadow: 0 0 0 3px color-mix(in oklab, #ef4444 20%, transparent);
}
.choices.invalid{
  border: 1.5px solid #ef4444;
  background: color-mix(in oklab, #ef4444 7%, #fff);
  border-radius: .6rem;
  padding: .6rem .7rem;
}
.choices.invalid label{ color:#7f1d1d; font-weight:600; }

/* FOOTER */
.site-footer{ background:var(--footer-bg); color:var(--footer-text); margin-top: clamp(2rem, 6vw, 3rem); }
.footer-grid{ display:grid; gap:clamp(1rem, 2.5vw, 2rem); grid-template-columns: repeat(4, 1fr); padding-block: clamp(2rem, 4vw, 3rem); }
.footer-col{ min-width:0; }
.footer-head{ color:#fff; font-size:1.05rem; margin-bottom:.75rem; }
.footer-brand{ font-weight:800; letter-spacing:-.02em; font-size:1.25rem; margin-bottom:.25rem; }
.footer-strong{ color:#fff; } .footer-accent{ color:var(--brand-400); }
.footer-note{ color:color-mix(in oklab, #fff 70%, #000); margin-top:.25rem; }

.social-row{ display:flex; gap:.6rem; margin-top:.75rem; }
.social{
  --icon-size: 22px;
  display:inline-flex; align-items:center; justify-content:center; width:42px; height:42px; border-radius:12px;
  background:rgba(255,255,255,.04); color:color-mix(in oklab, #fff 92%, #000);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.18); transition: background-color .2s ease, box-shadow .2s ease, transform .06s ease;
}
.social:hover{ background:rgba(255,255,255,.1); box-shadow: inset 0 0 0 1px rgba(255,255,255,.28), 0 0 0 3px rgba(255,255,255,.06); }
.social:active{ transform: translateY(1px); }
.social .icon{ width:var(--icon-size); height:var(--icon-size); display:block; }

.footer-links{ display:grid; gap:.5rem; }
.footer-links a{ color:color-mix(in oklab, #fff 85%, #000); }
.footer-links a:hover{ text-decoration:underline; }

.footer-bar{ border-top:1px solid rgba(255,255,255,.08); padding-block:.85rem; color:color-mix(in oklab, #fff 70%, #000); font-size:.925rem; }
@media (max-width:1024px){ .footer-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width:640px){ .footer-grid{ grid-template-columns: 1fr; } }

/* Small-phone polish */
@media (max-width:480px){
  .brand-logo{ width:180px; }
}