/* =========================================================================
   پرتال آزمایشگاه‌های مجازی — سیستم طراحی
   ========================================================================= */

/* ---------- ۱. توکن‌ها ---------- */
:root {
  --bg:            #eef5fa;
  --bg-2:          #e3eef6;
  --surface:       #ffffff;
  --surface-2:     #f4f9fc;
  --surface-3:     #e9f3f9;
  --ink:           #16232d;
  --ink-2:         #4a5f6f;
  --muted:         #7d93a3;
  --line:          #d8e6ef;
  --line-2:        #c3d8e6;

  --primary:       #2ba9d4;
  --primary-600:   #1d8fb8;
  --primary-700:   #14708f;
  --primary-soft:  #e2f3fa;
  --accent:        #f2724b;
  --accent-600:    #dd5a32;
  --accent-soft:   #fdeae3;

  --ok:            #17a673;
  --ok-soft:       #dff5ec;
  --warn:          #d99400;
  --warn-soft:     #fbf0d9;
  --bad:           #e0447a;
  --bad-soft:      #fce6ed;

  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 18px;
  --r-xl: 26px;
  --r-pill: 999px;

  --sh-1: 0 1px 2px rgba(18, 45, 62, .06), 0 2px 8px rgba(18, 45, 62, .05);
  --sh-2: 0 2px 6px rgba(18, 45, 62, .07), 0 12px 28px rgba(18, 45, 62, .08);
  --sh-3: 0 8px 20px rgba(18, 45, 62, .1), 0 26px 60px rgba(18, 45, 62, .12);
  --sh-focus: 0 0 0 3px rgba(43, 169, 212, .28);

  --wrap: 1200px;
  --header-h: 68px;
  --font: "Vazirmatn", "Vazir", "IRANSans", "Segoe UI", Tahoma, system-ui, sans-serif;
  --mono: "Vazirmatn", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

html[data-theme="dark"] {
  --bg:            #0b141c;
  --bg-2:          #0e1a24;
  --surface:       #132330;
  --surface-2:     #172a38;
  --surface-3:     #1d3444;
  --ink:           #e6f0f7;
  --ink-2:         #a9c1d1;
  --muted:         #7793a7;
  --line:          #23394a;
  --line-2:        #2d475b;

  --primary:       #45bde5;
  --primary-600:   #67cbee;
  --primary-700:   #8bd8f3;
  --primary-soft:  #12303d;
  --accent:        #ff8964;
  --accent-600:    #ff9d7d;
  --accent-soft:   #33211b;

  --ok:            #35c48f;
  --ok-soft:       #12332a;
  --warn:          #eab543;
  --warn-soft:     #33290f;
  --bad:           #f56b96;
  --bad-soft:      #351b25;

  --sh-1: 0 1px 2px rgba(0, 0, 0, .3), 0 2px 8px rgba(0, 0, 0, .25);
  --sh-2: 0 2px 6px rgba(0, 0, 0, .35), 0 12px 28px rgba(0, 0, 0, .3);
  --sh-3: 0 8px 20px rgba(0, 0, 0, .4), 0 26px 60px rgba(0, 0, 0, .45);
  --sh-focus: 0 0 0 3px rgba(69, 189, 229, .32);
}

/* ---------- ۲. پایه ---------- */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
a { color: var(--primary-700); text-decoration: none; }
a:hover { color: var(--primary-600); }
ul, ol { padding-inline-start: 1.4em; }

h1, h2, h3, h4 { line-height: 1.4; font-weight: 800; letter-spacing: -.01em; }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.9rem); }
h2 { font-size: clamp(1.4rem, 1.1rem + 1.3vw, 2.05rem); }
h3 { font-size: clamp(1.1rem, 1rem + .5vw, 1.35rem); }
h4 { font-size: 1.03rem; }

:focus-visible { outline: none; box-shadow: var(--sh-focus); border-radius: var(--r-sm); }

::selection { background: var(--primary); color: #fff; }

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: var(--r-pill); border: 3px solid var(--bg-2); }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

.icon { width: 1.25em; height: 1.25em; flex: none; }
.icon-sm { width: 1em; height: 1em; }
.icon-lg { width: 1.6em; height: 1.6em; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- ۳. چیدمان ---------- */
.wrap { width: min(100% - 2.4rem, var(--wrap)); margin-inline: auto; }
.wrap-narrow { width: min(100% - 2.4rem, 860px); margin-inline: auto; }

main { flex: 1 0 auto; }

.section { padding-block: clamp(2.5rem, 1.5rem + 3vw, 4.5rem); }
.section-tight { padding-block: clamp(1.8rem, 1.2rem + 2vw, 3rem); }
.section-alt { background: var(--bg-2); }

.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 1.2rem; flex-wrap: wrap; margin-bottom: 1.8rem;
}
.section-head p { color: var(--ink-2); max-width: 62ch; margin-top: .35rem; }
.section-head .eyebrow {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .78rem; font-weight: 700; letter-spacing: .04em;
  color: var(--primary-700); text-transform: uppercase; margin-bottom: .35rem;
}

.grid { display: grid; gap: 1.3rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(285px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }

.stack   { display: flex; flex-direction: column; gap: 1rem; }
.row     { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.spacer  { flex: 1 1 auto; }
.muted   { color: var(--muted); }
.small   { font-size: .86rem; }
.center  { text-align: center; }

/* ---------- ۴. هدر ---------- */
.header {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: var(--header-h);
  display: flex; align-items: center; gap: 1.1rem;
}

.brand { display: flex; align-items: center; gap: .6rem; color: var(--ink); flex: none; }
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px; flex: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-700) 55%, #1a5f7d 100%);
  display: grid; place-items: center; color: #fff;
  box-shadow: 0 4px 12px rgba(43, 169, 212, .35);
}
.brand-mark svg { width: 22px; height: 22px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text b { font-size: .98rem; font-weight: 800; }
.brand-text span { font-size: .68rem; color: var(--muted); letter-spacing: .02em; }

.nav { display: flex; align-items: center; gap: .15rem; }
.nav a {
  position: relative; padding: .5rem .8rem; border-radius: var(--r-sm);
  color: var(--ink-2); font-size: .93rem; font-weight: 600;
  transition: color .16s, background .16s;
}
.nav a:hover { color: var(--ink); background: var(--surface-2); }
.nav a.active { color: var(--primary-700); }
.nav a.active::after {
  content: ""; position: absolute; inset-inline: .8rem; bottom: .16rem;
  height: 2px; border-radius: 2px; background: var(--primary);
}

.header-search { position: relative; flex: 0 1 240px; margin-inline-start: auto; }
.header-search input {
  width: 100%; padding: .5rem 2.3rem .5rem .8rem;
  border: 1px solid var(--line); border-radius: var(--r-pill);
  background: var(--surface-2); font-size: .88rem; transition: border-color .16s, background .16s;
}
.header-search input:focus { border-color: var(--primary); background: var(--surface); }
.header-search .icon {
  position: absolute; inset-inline-start: .75rem; top: 50%; transform: translateY(-50%);
  color: var(--muted); pointer-events: none;
}
.search-results {
  position: absolute; inset-inline: 0; top: calc(100% + .5rem);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-3);
  max-height: 340px; overflow-y: auto; padding: .35rem; display: none; z-index: 70;
}
.search-results.open { display: block; }
.search-results a {
  display: block; padding: .5rem .7rem; border-radius: var(--r-sm); color: var(--ink);
}
.search-results a:hover { background: var(--surface-2); }
.search-results b { display: block; font-size: .9rem; font-weight: 700; }
.search-results span { font-size: .76rem; color: var(--muted); }
.search-results .empty { padding: .8rem; color: var(--muted); font-size: .86rem; text-align: center; }

.icon-btn {
  width: 38px; height: 38px; border-radius: var(--r-sm); flex: none;
  display: grid; place-items: center; color: var(--ink-2);
  border: 1px solid transparent; transition: background .16s, color .16s;
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }

.avatar {
  width: 36px; height: 36px; border-radius: 50%; flex: none;
  display: grid; place-items: center; font-size: .8rem; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-700));
  color: #fff; letter-spacing: -.02em;
}

.menu-wrap { position: relative; }
.menu {
  position: absolute; inset-inline-end: 0; top: calc(100% + .55rem);
  min-width: 210px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-3); padding: .35rem;
  display: none; z-index: 70;
}
.menu.open { display: block; }
.menu a, .menu button {
  display: flex; align-items: center; gap: .55rem; width: 100%;
  padding: .55rem .7rem; border-radius: var(--r-sm);
  color: var(--ink); font-size: .9rem; text-align: start;
}
.menu a:hover, .menu button:hover { background: var(--surface-2); }
.menu hr { border: 0; border-top: 1px solid var(--line); margin: .3rem .2rem; }
.menu-head { padding: .6rem .7rem .5rem; border-bottom: 1px solid var(--line); margin-bottom: .3rem; }
.menu-head b { display: block; font-size: .9rem; }
.menu-head span { font-size: .76rem; color: var(--muted); }

.burger { display: none; }

/* ---------- ۵. دکمه‌ها ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  padding: .62rem 1.15rem; border-radius: var(--r-sm);
  font-size: .92rem; font-weight: 700; white-space: nowrap;
  border: 1px solid transparent; transition: all .16s ease;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 8px rgba(43, 169, 212, .3); }
.btn-primary:hover:not(:disabled) { background: var(--primary-600); color: #fff; transform: translateY(-1px); box-shadow: 0 5px 16px rgba(43, 169, 212, .38); }

.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 2px 8px rgba(242, 114, 75, .3); }
.btn-accent:hover:not(:disabled) { background: var(--accent-600); color: #fff; transform: translateY(-1px); }

.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover:not(:disabled) { border-color: var(--primary); color: var(--primary-700); background: var(--surface); }

.btn-soft { background: var(--primary-soft); color: var(--primary-700); }
.btn-soft:hover:not(:disabled) { background: var(--primary); color: #fff; }

.btn-quiet { color: var(--ink-2); padding-inline: .7rem; }
.btn-quiet:hover:not(:disabled) { background: var(--surface-2); color: var(--ink); }

.btn-lg { padding: .8rem 1.6rem; font-size: 1rem; border-radius: var(--r-md); }
.btn-sm { padding: .4rem .8rem; font-size: .83rem; }
.btn-block { width: 100%; }

/* ---------- ۶. نشان‌ها ---------- */
.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .18rem .58rem; border-radius: var(--r-pill);
  font-size: .74rem; font-weight: 700; letter-spacing: .01em;
  background: var(--surface-3); color: var(--ink-2);
}
.badge-primary { background: var(--primary-soft); color: var(--primary-700); }
.badge-accent  { background: var(--accent-soft);  color: var(--accent-600); }
.badge-ok      { background: var(--ok-soft);      color: var(--ok); }
.badge-warn    { background: var(--warn-soft);    color: var(--warn); }
.badge-bad     { background: var(--bad-soft);     color: var(--bad); }
.badge-solid   { background: var(--primary); color: #fff; }

.chip {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .42rem .95rem; border-radius: var(--r-pill);
  border: 1px solid var(--line-2); background: var(--surface);
  color: var(--ink-2); font-size: .87rem; font-weight: 600;
  transition: all .16s;
}
.chip:hover { border-color: var(--primary); color: var(--primary-700); }
.chip.active {
  background: var(--primary); border-color: var(--primary); color: #fff;
  box-shadow: 0 2px 8px rgba(43, 169, 212, .3);
}
.chip .count {
  font-size: .74rem; padding: 0 .35rem; border-radius: var(--r-pill);
  background: var(--surface-3); color: var(--ink-2);
}
.chip.active .count { background: rgba(255, 255, 255, .25); color: #fff; }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; }

/* ---------- ۷. کارت‌ها ---------- */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-1);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card-pad { padding: 1.3rem; }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--sh-2); border-color: var(--line-2); }

/* کارت آزمایشگاه */
.lab-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-1);
  transition: transform .2s ease, box-shadow .2s ease;
  color: var(--ink);
}
.lab-card:hover { transform: translateY(-4px); box-shadow: var(--sh-3); color: var(--ink); }

.lab-card__art {
  position: relative; height: 132px; overflow: hidden;
  background:
    radial-gradient(120% 130% at 85% 0%, color-mix(in srgb, var(--c) 32%, transparent) 0%, transparent 62%),
    linear-gradient(135deg, color-mix(in srgb, var(--c) 15%, var(--surface)) 0%, var(--surface-2) 100%);
  display: grid; place-items: center;
}
.lab-card__art::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(color-mix(in srgb, var(--c) 12%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--c) 12%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(90% 90% at 50% 50%, #000 20%, transparent 78%);
}
.lab-card__glyph {
  width: 62px; height: 62px; border-radius: 18px; position: relative; z-index: 1;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(140deg, var(--c) 0%, color-mix(in srgb, var(--c) 62%, #0b3d52) 100%);
  box-shadow: 0 8px 22px color-mix(in srgb, var(--c) 40%, transparent);
}
.lab-card__glyph svg { width: 32px; height: 32px; }

.lab-card__cat {
  position: absolute; inset-block-start: .7rem; inset-inline-start: .7rem; z-index: 2;
  padding: .2rem .62rem; border-radius: var(--r-pill);
  font-size: .7rem; font-weight: 800; letter-spacing: .02em;
  background: color-mix(in srgb, var(--c) 16%, var(--surface)); color: var(--c);
  border: 1px solid color-mix(in srgb, var(--c) 28%, transparent);
}
.lab-card__flag {
  position: absolute; inset-block-start: .7rem; inset-inline-end: .7rem; z-index: 2;
  padding: .2rem .62rem; border-radius: var(--r-pill);
  font-size: .7rem; font-weight: 800;
  background: var(--accent); color: #fff;
}
.lab-card__flag.soon { background: var(--muted); }
.lab-card__flag.done { background: var(--ok); }

.lab-card__body { padding: 1rem 1.1rem 1.15rem; display: flex; flex-direction: column; gap: .55rem; flex: 1; }
.lab-card__title { font-size: 1.06rem; font-weight: 800; line-height: 1.45; }
.lab-card__tag { font-size: .86rem; color: var(--ink-2); line-height: 1.65; flex: 1; }

.lab-card__meta {
  display: flex; flex-wrap: wrap; gap: .5rem .9rem;
  font-size: .76rem; color: var(--muted); padding-top: .15rem;
}
.lab-card__meta span { display: inline-flex; align-items: center; gap: .28rem; }

.lab-card__foot {
  display: flex; align-items: center; gap: .55rem;
  padding: .8rem 1.1rem; border-top: 1px solid var(--line); background: var(--surface-2);
}

/* ---------- ۸. نوار و حلقهٔ پیشرفت ---------- */
.bar { height: 7px; border-radius: var(--r-pill); background: var(--surface-3); overflow: hidden; }
.bar > i {
  display: block; height: 100%; border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--primary), var(--primary-700));
  transition: width .5s cubic-bezier(.22, 1, .36, 1);
}
.bar.ok > i   { background: linear-gradient(90deg, var(--ok), #0e8b5f); }
.bar.warn > i { background: linear-gradient(90deg, var(--warn), #b87c00); }
.bar.bad > i  { background: linear-gradient(90deg, var(--bad), #c22f60); }
.bar-lg { height: 10px; }

.ring { display: grid; place-items: center; position: relative; }
.ring svg { transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 9; stroke-linecap: round; }
.ring .track { stroke: var(--surface-3); }
.ring .fill  { stroke: var(--primary); transition: stroke-dashoffset .7s cubic-bezier(.22, 1, .36, 1); }
.ring .label {
  position: absolute; display: flex; flex-direction: column; align-items: center; line-height: 1.2;
}
.ring .label b { font-size: 1.35rem; font-weight: 800; }
.ring .label span { font-size: .68rem; color: var(--muted); }

/* ---------- ۹. فرم‌ها ---------- */
.field { display: flex; flex-direction: column; gap: .35rem; }
.field > label { font-size: .86rem; font-weight: 700; color: var(--ink-2); }
.field .hint { font-size: .78rem; color: var(--muted); }

.input, .select, .textarea {
  width: 100%; padding: .65rem .85rem;
  border: 1px solid var(--line-2); border-radius: var(--r-sm);
  background: var(--surface); color: var(--ink);
  font-size: .93rem; transition: border-color .16s, box-shadow .16s;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: var(--sh-focus);
}
.textarea { resize: vertical; min-height: 96px; line-height: 1.8; }
.select {
  appearance: none; padding-inline-end: 2.2rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237d93a3' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M5 9l7 7 7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-size: 16px;
  background-position: left .8rem center;
}

.alert {
  display: flex; gap: .6rem; padding: .8rem 1rem;
  border-radius: var(--r-sm); font-size: .88rem;
  border: 1px solid transparent;
}
.alert-bad  { background: var(--bad-soft);  color: #a01f4c; border-color: color-mix(in srgb, var(--bad) 26%, transparent); }
.alert-ok   { background: var(--ok-soft);   color: #0c6b4a; border-color: color-mix(in srgb, var(--ok) 26%, transparent); }
.alert-info { background: var(--primary-soft); color: var(--primary-700); border-color: color-mix(in srgb, var(--primary) 26%, transparent); }
.alert-warn { background: var(--warn-soft); color: #8a5f00; border-color: color-mix(in srgb, var(--warn) 26%, transparent); }
html[data-theme="dark"] .alert-bad  { color: #ffa9c3; }
html[data-theme="dark"] .alert-ok   { color: #6fdcb2; }
html[data-theme="dark"] .alert-warn { color: #f4cf7d; }

/* ---------- ۱۰. متن درس ---------- */
.prose { font-size: 1.02rem; line-height: 2.05; color: var(--ink); }
.prose > * + * { margin-top: 1.1rem; }
.prose h3 {
  font-size: 1.22rem; margin-top: 2.1rem; padding-inline-start: .7rem;
  border-inline-start: 4px solid var(--primary); border-radius: 2px;
}
.prose h4 { font-size: 1.05rem; margin-top: 1.5rem; color: var(--primary-700); }
.prose ul, .prose ol { padding-inline-start: 1.5em; }
.prose li + li { margin-top: .45rem; }
.prose strong { font-weight: 800; color: var(--ink); }
.prose code {
  font-family: var(--mono); font-size: .92em; padding: .1em .4em;
  background: var(--surface-3); border-radius: var(--r-xs); direction: ltr;
  display: inline-block; unicode-bidi: embed;
}
.prose blockquote {
  padding: 1rem 1.1rem; border-radius: var(--r-sm);
  background: var(--primary-soft); border-inline-start: 4px solid var(--primary);
  color: var(--ink); font-size: .96rem;
}
.prose blockquote.note::before {
  content: "نکته"; display: block; font-size: .74rem; font-weight: 800;
  letter-spacing: .04em; color: var(--primary-700); margin-bottom: .3rem;
}
.prose blockquote.warn {
  background: var(--warn-soft); border-inline-start-color: var(--warn);
}
.prose blockquote.warn::before { content: "هشدار"; color: var(--warn); }
.prose table {
  width: 100%; border-collapse: collapse; font-size: .92rem;
  border: 1px solid var(--line); border-radius: var(--r-sm); overflow: hidden;
}
.prose th, .prose td { padding: .6rem .8rem; border-bottom: 1px solid var(--line); text-align: start; }
.prose th { background: var(--surface-2); font-weight: 800; }
.prose tr:last-child td { border-bottom: 0; }
.prose sub, .prose sup { font-size: .72em; }

.formula-list { display: grid; gap: .6rem; }
.formula {
  display: flex; align-items: center; gap: .9rem; flex-wrap: wrap;
  padding: .7rem .95rem; border-radius: var(--r-sm);
  background: var(--surface-2); border: 1px dashed var(--line-2);
}
.formula b {
  font-family: var(--mono); font-size: 1.02rem; color: var(--primary-700);
  direction: ltr; unicode-bidi: embed; font-weight: 700;
}
.formula span { font-size: .85rem; color: var(--ink-2); }

/* ---------- ۱۱. اعلان و پیام ---------- */
.toasts {
  position: fixed; inset-block-end: 1.2rem; inset-inline-start: 1.2rem;
  display: flex; flex-direction: column; gap: .5rem; z-index: 200;
}
.toast {
  display: flex; align-items: center; gap: .55rem;
  padding: .7rem 1rem; border-radius: var(--r-sm);
  background: var(--surface); border: 1px solid var(--line);
  box-shadow: var(--sh-3); font-size: .88rem; max-width: 340px;
  animation: toast-in .28s cubic-bezier(.22, 1, .36, 1);
}
.toast.ok  { border-inline-start: 4px solid var(--ok); }
.toast.bad { border-inline-start: 4px solid var(--bad); }
.toast.info{ border-inline-start: 4px solid var(--primary); }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } }

/* ---------- ۱۲. فوتر ---------- */
.footer {
  margin-top: auto; background: var(--surface);
  border-top: 1px solid var(--line); padding-block: 2.6rem 1.4rem;
}
.footer-grid {
  display: grid; gap: 2rem;
  grid-template-columns: minmax(240px, 1.4fr) repeat(auto-fit, minmax(150px, 1fr));
}
.footer h4 { font-size: .85rem; letter-spacing: .03em; margin-bottom: .8rem; color: var(--ink); }
.footer ul { list-style: none; padding: 0; display: grid; gap: .5rem; }
.footer a { color: var(--ink-2); font-size: .88rem; }
.footer a:hover { color: var(--primary-700); }
.footer-note {
  margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-size: .8rem; color: var(--muted);
}
.footer-about { font-size: .88rem; color: var(--ink-2); line-height: 1.9; max-width: 42ch; }

/* ---------- ۱۳. واکنش‌گرا ---------- */
@media (max-width: 1040px) {
  .header-search { flex-basis: 180px; }
}
@media (max-width: 900px) {
  :root { --header-h: 62px; }
  .burger { display: grid; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: .2rem;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: .8rem 1.2rem 1.2rem; box-shadow: var(--sh-3);
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: .7rem .8rem; font-size: .98rem; }
  .nav a.active::after { inset-inline: auto; inset-inline-start: 0; width: 3px; height: 60%; top: 20%; bottom: auto; }
  .header-search { flex: 1; margin-inline-start: 0; }
}
@media (max-width: 600px) {
  .wrap, .wrap-narrow { width: min(100% - 1.6rem, var(--wrap)); }
  .header-search { display: none; }
  .brand-text span { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important; scroll-behavior: auto !important;
  }
}

@media print {
  .header, .footer, .toasts, .no-print { display: none !important; }
  body { background: #fff; }
}