/* ==========================================================================
   «پزشک شو» — استایل اصلی (RTL, Mobile-first)
   رنگ‌ها و اندازه‌ها از طریق متغیرهای زیر قابل ویرایش هستند.
   ========================================================================== */
:root {
  --navy: #0d2b4e;
  --navy-700: #123a68;
  --navy-50: #eef3f9;
  --teal: #0f8b8d;
  --teal-600: #0c7375;
  --gold: #d9a441;
  --ink: #16202b;
  --body: #4a5866;
  --muted: #6b7885;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --danger: #c0392b;
  --ok: #1a7f4b;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(13, 43, 78, 0.08);
  --shadow-sm: 0 4px 14px rgba(13, 43, 78, 0.06);
  --container: 1220px;
  --font: "Vazirmatn", "Segoe UI", Tahoma, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 2;
  color: var(--body);
  background: var(--bg);
  overflow-x: hidden;
}

h1, h2, h3, h4 { color: var(--ink); line-height: 1.6; margin: 0 0 .6em; font-weight: 700; }
h1 { font-size: clamp(1.6rem, 4.2vw, 2.5rem); }
h2 { font-size: clamp(1.3rem, 3vw, 1.75rem); }
h3 { font-size: clamp(1.08rem, 2.2vw, 1.25rem); }
p { margin: 0 0 1em; }
a { color: var(--teal-600); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { padding-inline-start: 1.4rem; }
li { margin-bottom: .4rem; }
strong { color: var(--ink); }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; border-radius: 4px; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 18px; }
.container.narrow { max-width: 820px; }
.section { padding: clamp(2.4rem, 6vw, 4.2rem) 0; }
.section-title { text-align: center; margin-bottom: .4em; }
.section-sub { text-align: center; max-width: 720px; margin: 0 auto 2rem; color: var(--muted); }
.lead { font-size: 1.05rem; color: var(--body); }
.muted { color: var(--muted); font-size: .87rem; }
.bg-soft { background: var(--bg-soft); }
.inline-link { color: var(--teal-600); text-decoration: underline; text-underline-offset: 3px; }

.skip-link {
  position: absolute; right: 12px; top: 8px; z-index: 999;
  clip-path: inset(50%); pointer-events: none;
  background: var(--navy); color: #fff; padding: .6rem 1rem; border-radius: var(--radius-sm);
}
.skip-link:focus { clip-path: none; pointer-events: auto; }

/* ------------------------------------------------------------ header/nav */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { max-width: 1480px; }
.header-inner { display: flex; flex-wrap: nowrap; align-items: center; gap: 1rem; min-height: 72px; }
.brand { display: flex; align-items: center; gap: .6rem; color: var(--ink); text-decoration: none; flex-shrink: 0; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  color: #fff; font-weight: 700; font-size: .95rem; letter-spacing: -1px;
}
.brand-mark span { opacity: .8; }
.brand-text { display: flex; flex-direction: column; line-height: 1.4; }
.brand-text strong { font-size: 1.05rem; }
.brand-text small { color: var(--muted); font-size: .72rem; }

.main-nav { margin-inline-start: auto; min-width: 0; }
.nav-list { display: flex; align-items: center; gap: .2rem; list-style: none; margin: 0; padding: 0; }
.nav-list > li { position: relative; margin: 0; }
.nav-list > li > a {
  display: block; padding: .55rem .5rem; border-radius: var(--radius-sm);
  color: var(--ink); font-size: .93rem; font-weight: 500; white-space: nowrap;
}
.nav-list > li > a:hover { background: var(--navy-50); text-decoration: none; }
.nav-list > li > a.is-active { color: var(--teal-600); }
.sub-toggle { display: none; }
.sub-list {
  list-style: none; margin: 0; padding: .4rem;
  position: absolute; top: 100%; right: 0; min-width: 250px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: .18s ease;
}
.nav-list > li:last-child .sub-list { right: auto; left: 0; }
.has-sub:hover > .sub-list, .has-sub:focus-within > .sub-list { opacity: 1; visibility: visible; transform: none; }
.sub-list a { display: block; padding: .5rem .7rem; border-radius: var(--radius-sm); color: var(--body); font-size: .88rem; }
.sub-list a:hover { background: var(--navy-50); color: var(--navy); text-decoration: none; }

.header-actions { display: flex; align-items: center; gap: .6rem; flex-shrink: 0; }
.phone-link { color: var(--navy); font-weight: 600; font-size: .9rem; white-space: nowrap; }
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff;
  border-radius: var(--radius-sm); cursor: pointer; padding: 0; position: relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; right: 11px; width: 22px; height: 2px; background: var(--navy);
  border-radius: 2px; transition: .2s;
}
.nav-toggle span { top: 21px; }
.nav-toggle span::before { top: -7px; right: 0; }
.nav-toggle span::after { top: 7px; right: 0; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: rotate(45deg); top: 0; }
.nav-open .nav-toggle span::after { transform: rotate(-45deg); top: 0; }

/* --------------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .72rem 1.35rem; border-radius: 100px; font-size: .95rem; font-weight: 600;
  border: 1.5px solid transparent; cursor: pointer; transition: .18s ease; text-decoration: none;
  font-family: inherit;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-700); }
.btn-outline { background: #fff; color: var(--navy); border-color: var(--navy); }
.btn-outline:hover { background: var(--navy-50); }
.btn-ghost { background: transparent; color: inherit; border-color: currentColor; }
.btn-gold { background: var(--gold); color: #3a2a06; }
.btn-gold:hover { background: #c9932f; }
.btn-block { width: 100%; }

/* ------------------------------------------------------------------ hero */
.hero { background: linear-gradient(160deg, var(--navy-50), #fff 65%); padding: clamp(2rem, 5vw, 3.6rem) 0; }
.hero-inner { display: grid; gap: 2rem; align-items: center; }
.eyebrow {
  display: inline-block; background: rgba(15, 139, 141, .1); color: var(--teal-600);
  padding: .3rem .85rem; border-radius: 100px; font-size: .8rem; font-weight: 600; margin-bottom: .8rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.2rem; }
.hero-badges { list-style: none; padding: 0; margin: 1.4rem 0 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.hero-badges li {
  background: #fff; border: 1px solid var(--line); border-radius: 100px;
  padding: .35rem .9rem; font-size: .82rem; color: var(--navy); box-shadow: var(--shadow-sm); margin: 0;
}
.hero-media img { border-radius: var(--radius); box-shadow: var(--shadow); }

.page-hero { background: linear-gradient(160deg, var(--navy-50), #fff 70%); padding: clamp(1.6rem, 4vw, 3rem) 0; }
.page-hero h1 { margin-bottom: .3em; }

/* ----------------------------------------------------------- breadcrumbs */
.breadcrumb { border-bottom: 1px solid var(--line); background: #fff; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; margin: 0; padding: .7rem 0; font-size: .82rem; }
.breadcrumb li { margin: 0; color: var(--muted); }
.breadcrumb li + li::before { content: "‹"; margin-inline-end: .4rem; color: var(--line); }

/* ----------------------------------------------------------------- cards */
.grid { display: grid; gap: 1.1rem; }
.grid-2 { grid-template-columns: 1fr; gap: 1rem; }
.grid-3, .grid-4 { grid-template-columns: 1fr; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); overflow: hidden; transition: .2s;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-body { overflow-x: hidden; padding: 1.3rem; }
.card.feature { padding: 1.4rem; }
.card.feature h2, .card.feature h3 { font-size: 1.08rem; }
.card h3 { margin-bottom: .4em; }
.card h3 a { color: var(--ink); }
.tag {
  display: inline-block; background: var(--navy-50); color: var(--navy);
  font-size: .74rem; padding: .2rem .7rem; border-radius: 100px; margin-bottom: .6rem;
}
.card-meta { display: flex; justify-content: space-between; align-items: center; font-size: .82rem; color: var(--muted); }
.more { font-weight: 600; }
.article-card .card-body p { font-size: .92rem; }
.icon-badge {
  width: 44px; height: 44px; border-radius: 12px; background: var(--navy-50);
  display: grid; place-items: center; margin-bottom: .8rem; font-size: 1.2rem;
}

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; text-align: center; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem .6rem; }
.stat b { display: block; font-size: 1.5rem; color: var(--navy); }
.stat span { font-size: .82rem; color: var(--muted); }

/* ----------------------------------------------------------------- table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 560px; background: #fff; }
th, td { padding: .8rem 1rem; text-align: right; border-bottom: 1px solid var(--line); font-size: .9rem; }
thead th { background: var(--navy); color: #fff; font-weight: 600; }
tbody tr:nth-child(even) { background: var(--bg-soft); }
tbody tr:last-child td { border-bottom: 0; }

/* ------------------------------------------------------------- accordion */
.accordion { display: grid; gap: .7rem; }
.acc-item { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
.acc-btn {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  background: none; border: 0; padding: 1rem 1.1rem; font: inherit; font-weight: 600;
  color: var(--ink); text-align: right; cursor: pointer; line-height: 1.8;
}
.acc-btn:hover { background: var(--bg-soft); }
.acc-icon { flex-shrink: 0; width: 18px; height: 18px; position: relative; }
.acc-icon::before, .acc-icon::after {
  content: ""; position: absolute; background: var(--teal); border-radius: 2px; transition: .2s;
  top: 8px; right: 0; width: 18px; height: 2px;
}
.acc-icon::after { transform: rotate(90deg); }
.acc-btn[aria-expanded="true"] .acc-icon::after { transform: rotate(0); }
.acc-panel { display: none; padding: 0 1.1rem 1rem; }
.acc-panel p { margin: 0; font-size: .93rem; }
.acc-item.open .acc-panel { display: block; }

/* ------------------------------------------------------------------ note */
.note {
  border: 1px solid #f0dcae; background: #fdf8ec; border-radius: var(--radius);
  padding: 1.1rem 1.2rem; margin: 1.6rem 0; border-inline-start: 4px solid var(--gold);
}
.note-title { font-size: 1rem; margin-bottom: .3em; color: #7a5a12; }
.note p { margin: 0; font-size: .9rem; }
.source-box {
  border: 1px solid #bddddd; background: #f1fbfb; border-radius: var(--radius);
  padding: 1rem 1.2rem; margin: 1.6rem 0; border-inline-start: 4px solid var(--teal);
}
.source-box h2 { font-size: 1rem; margin-bottom: .35em; }
.source-box p, .source-box ul { margin-bottom: .5rem; font-size: .9rem; }
.source-box li { margin-bottom: .2rem; }

/* ------------------------------------------------------------------ form */
.form-section { background: var(--bg-soft); }
.form-card { padding: clamp(1.2rem, 3vw, 2rem); }
.form-card .lead { text-align: center; color: var(--muted); font-size: .94rem; margin-bottom: 1.4rem; }
.field { display: flex; flex-direction: column; margin-bottom: 1rem; }
.field label { font-size: .88rem; font-weight: 600; color: var(--ink); margin-bottom: .35rem; }
.field label span { color: var(--danger); }
.field input, .field select, .field textarea {
  font: inherit; font-size: .93rem; padding: .68rem .8rem; border: 1.5px solid var(--line);
  border-radius: var(--radius-sm); background: #fff; color: var(--ink); width: 100%;
  transition: border-color .18s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); outline: none; }
.field textarea { resize: vertical; }
.field .error { color: var(--danger); font-size: .8rem; margin: .3rem 0 0; min-height: 0; }
.field.invalid input, .field.invalid select { border-color: var(--danger); }
.field.checkbox { flex-direction: row; flex-wrap: wrap; align-items: flex-start; gap: .5rem; }
.field.checkbox input { width: 18px; height: 18px; margin-top: .45rem; flex-shrink: 0; }
.field.checkbox label { font-weight: 400; font-size: .85rem; flex: 1; min-width: 200px; color: var(--body); }
.field.checkbox .error { flex-basis: 100%; }
.form-success {
  background: #e8f6ee; color: var(--ok); border: 1px solid #bfe4cd;
  border-radius: var(--radius-sm); padding: .8rem 1rem; margin-top: 1rem; font-size: .9rem;
}

/* -------------------------------------------------------------- cta band */
.cta-band { background: linear-gradient(120deg, var(--navy), var(--teal-600)); color: #fff; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255, 255, 255, .88); margin: 0; }
.cta-inner { display: grid; gap: 1.2rem; align-items: center; }
.cta-actions { display: flex; flex-wrap: wrap; gap: .7rem; }
.cta-band .btn-ghost { color: #fff; }

/* --------------------------------------------------------------- filters */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; margin-bottom: 1.6rem; }
.filter-btn {
  border: 1.5px solid var(--line); background: #fff; color: var(--body); font: inherit; font-size: .86rem;
  padding: .42rem 1rem; border-radius: 100px; cursor: pointer; transition: .18s;
}
.filter-btn:hover { border-color: var(--teal); color: var(--teal-600); }
.filter-btn.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }
.is-hidden { display: none !important; }

/* ---------------------------------------------------------- article body */
.article-body { max-width: 780px; margin-inline: auto; }
.article-body h2 { margin-top: 1.8em; }
.article-body figure { margin: 1.6rem 0; }
.article-body figure img { border-radius: var(--radius); }
.article-body figcaption { font-size: .8rem; color: var(--muted); text-align: center; margin-top: .5rem; }
.article-meta { display: flex; flex-wrap: wrap; gap: 1rem; font-size: .84rem; color: var(--muted); margin-bottom: 1.4rem; }
.toc { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; }
.toc h2 { font-size: 1rem; margin-bottom: .4em; }
.toc ul { margin: 0; font-size: .9rem; }

/* ------------------------------------------------------------ error page */
.error-page { text-align: center; }
.error-code { font-size: clamp(4rem, 16vw, 7rem); font-weight: 700; color: var(--navy-50); line-height: 1; margin: 0; }
.error-page .hero-actions { justify-content: center; }

/* ---------------------------------------------------------------- footer */
.site-footer { background: var(--navy); color: rgba(255, 255, 255, .8); padding-top: 2.6rem; margin-top: 0; }
.site-footer a { color: rgba(255, 255, 255, .82); }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; gap: 1.6rem; padding-bottom: 2rem; }
.footer-title { color: #fff; font-size: 1rem; margin-bottom: .7em; }
.footer-list { list-style: none; padding: 0; margin: 0; font-size: .88rem; }
.footer-list li { margin-bottom: .45rem; }
.footer-about p { font-size: .88rem; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .14); padding: 1rem 18px; display: grid; gap: .4rem;
  font-size: .8rem; text-align: center;
}
.footer-bottom p { margin: 0; }

.floating-call {
  position: fixed; inset-inline-start: 16px; bottom: 16px; z-index: 90;
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--teal); color: #fff; padding: .7rem 1.05rem; border-radius: 100px;
  box-shadow: 0 8px 22px rgba(15, 139, 141, .35); font-size: .9rem; font-weight: 600;
}
.floating-call:hover { background: var(--teal-600); text-decoration: none; }

/* ----------------------------------------------------------- breakpoints */
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: 1fr 1fr; gap: 1rem 1.2rem; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .footer-bottom { grid-template-columns: 1fr auto; text-align: start; }
}
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .hero-inner { grid-template-columns: 1.05fr .95fr; gap: 2.6rem; }
  .cta-inner { grid-template-columns: 1fr auto; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.1fr; }
}

@media (max-width: 1365px) {
  .nav-toggle { display: block; }
  .phone-link { display: none; }
  .main-nav {
    position: fixed; top: 72px; right: 0; left: 0; bottom: 0; height: calc(100vh - 72px); background: #fff; padding: 1rem 18px 3rem;
    overflow-y: auto; display: none; transition: .22s ease;
    border-top: 1px solid var(--line);
  }
  .nav-open .main-nav { display: block; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list > li { border-bottom: 1px solid var(--line); }
  .nav-list > li > a { padding: .85rem .2rem; font-size: 1rem; }
  .has-sub { display: grid; grid-template-columns: 1fr auto; }
  .sub-toggle {
    display: block; width: 44px; height: 44px; align-self: center; background: none;
    border: 0; cursor: pointer; position: relative;
  }
  .sub-toggle span, .sub-toggle span::before {
    content: ""; position: absolute; background: var(--navy); border-radius: 2px;
    top: 21px; right: 12px; width: 18px; height: 2px; transition: .2s;
  }
  .sub-toggle span::before { top: 0; right: 0; transform: rotate(90deg); }
  .sub-toggle[aria-expanded="true"] span::before { transform: rotate(0); }
  .sub-list {
    grid-column: 1 / -1; position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; border-radius: 0; display: none; padding: 0 0 .6rem .6rem;
    background: var(--bg-soft); border-radius: var(--radius-sm); margin-bottom: .6rem;
  }
  .sub-toggle[aria-expanded="true"] + .sub-list { display: block; }
  .has-sub:hover > .sub-list { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

@media (max-width: 1499px) and (min-width: 1366px) {
  .phone-link { display: none; }
  .nav-list > li > a { padding: .5rem .4rem; font-size: .88rem; }
  .brand-text small { display: none; }
}

@media (max-width: 560px) {
  .header-actions .btn { display: none; }
  .brand-text small { display: none; }
  .brand-text strong { font-size: 1rem; }
}