/* =========================================================
   Peptides Easy — Design System
   Plain CSS, no build step. Optimised for performance + a11y.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --bg: #f7fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #0f1f2e;
  --muted: #51657a;
  --border: #e2e8f0;

  --primary: #0d9488;       /* teal 600 */
  --primary-dark: #0f766e;  /* teal 700 */
  --primary-soft: #ccfbf1;  /* teal 100 */
  --accent: #6366f1;        /* indigo 500 */
  --warn-bg: #fff7ed;
  --warn-border: #fed7aa;
  --warn-text: #9a3412;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 1px 2px rgba(15, 31, 46, .06), 0 1px 3px rgba(15, 31, 46, .08);
  --shadow-md: 0 6px 18px rgba(15, 31, 46, .08);
  --shadow-lg: 0 18px 40px rgba(15, 31, 46, .14);

  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
          Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: #111c2e;
    --surface-2: #16243a;
    --text: #e6eef7;
    --muted: #9fb3c8;
    --border: #233650;
    --primary: #2dd4bf;
    --primary-dark: #14b8a6;
    --primary-soft: #134e4a;
    --warn-bg: #2a1c0f;
    --warn-border: #7c3a13;
    --warn-text: #fcd9b6;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
    --shadow-md: 0 6px 18px rgba(0,0,0,.45);
    --shadow-lg: 0 18px 40px rgba(0,0,0,.55);
  }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.25rem; }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 20px; }
.section { padding-block: clamp(48px, 8vw, 88px); }
.section--tight { padding-block: clamp(32px, 5vw, 56px); }
.center { text-align: center; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .14em; font-size: .8rem;
  font-weight: 700; color: var(--primary-dark);
}
.lead { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }
.center .lead { margin-inline: auto; }
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 880px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--primary-dark); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  font-weight: 600; font-size: 1rem; cursor: pointer;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
  transition: transform .12s ease, box-shadow .2s ease, background .2s ease;
  text-decoration: none; white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--primary); color: #042f2c; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--primary-dark); color: #fff; box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn--ghost:hover { background: var(--surface-2); }
.btn--block { width: 100%; justify-content: center; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.02em; font-size: 1.15rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand .logo { width: 32px; height: 32px; }
.brand b { color: var(--primary-dark); }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; padding: 0; }
.nav-links a {
  color: var(--muted); font-weight: 600; font-size: .96rem;
  padding: 8px 12px; border-radius: 8px;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); background: var(--surface-2); text-decoration: none; }
.nav-cta { margin-left: 6px; }
.nav-toggle {
  display: none; background: transparent; border: 1px solid var(--border);
  border-radius: 9px; width: 42px; height: 42px; cursor: pointer; color: var(--text);
}
.nav-toggle svg { margin-inline: auto; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; }
  .nav-links {
    position: absolute; inset: 66px 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 2px; background: var(--surface); border-bottom: 1px solid var(--border);
    padding: 12px 16px 18px; box-shadow: var(--shadow-md);
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: .18s ease;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px; font-size: 1.05rem; }
  .nav-cta { margin: 6px 0 0; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 420px at 78% -8%, var(--primary-soft), transparent 60%),
    radial-gradient(700px 380px at 6% 18%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 55%);
}
.hero__inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; padding-block: clamp(48px, 8vw, 92px); }
@media (max-width: 900px) { .hero__inner { grid-template-columns: 1fr; } }
.hero h1 { margin-bottom: 16px; }
.hero p.lead { margin-bottom: 26px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero__stats { display: flex; gap: 28px; margin-top: 32px; flex-wrap: wrap; }
.hero__stats .num { font-size: 1.7rem; font-weight: 800; color: var(--primary-dark); }
.hero__stats .lbl { font-size: .85rem; color: var(--muted); }

.hero-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 22px;
}
.hero-card h3 { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.hero-card .mini-row { display: flex; justify-content: space-between; padding: 10px 0; border-top: 1px dashed var(--border); }
.hero-card .mini-row:first-of-type { border-top: 0; }
.hero-card .mini-row span:last-child { font-weight: 700; font-family: var(--font-mono); }

/* ---------- Cards ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm);
  transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
}
.card--link:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); text-decoration: none; }
.card .icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary-dark); margin-bottom: 14px;
}
.card h3 { margin-bottom: 8px; color: var(--text); }
.card p { color: var(--muted); }
.card .more { display: inline-block; margin-top: 12px; font-weight: 600; color: var(--primary-dark); }

/* ---------- Badges / pills ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .76rem; font-weight: 700; letter-spacing: .02em;
  padding: 4px 10px; border-radius: 999px;
  background: var(--surface-2); color: var(--muted); border: 1px solid var(--border);
}
.badge--cat { background: var(--primary-soft); color: var(--primary-dark); border-color: transparent; }

/* ---------- Disclaimer / callout ---------- */
.callout {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn-text);
  border-radius: var(--radius-sm); padding: 16px 18px; font-size: .95rem;
}
.callout svg { flex: 0 0 auto; margin-top: 2px; }
.callout strong { color: inherit; }

/* ---------- Library (peptides) ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 24px; }
.search {
  flex: 1 1 260px; display: flex; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 10px 16px;
  box-shadow: var(--shadow-sm);
}
.search input { border: 0; outline: 0; background: transparent; color: var(--text); font-size: 1rem; width: 100%; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font: inherit; font-size: .9rem; font-weight: 600; cursor: pointer;
  padding: 8px 14px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface); color: var(--muted); transition: .15s ease;
}
.chip:hover { border-color: var(--primary); color: var(--text); }
.chip[aria-pressed="true"] { background: var(--primary); border-color: var(--primary); color: #042f2c; }

.pep-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.pep {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 10px;
}
.pep__head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.pep h3 { font-size: 1.12rem; }
.pep .alias { color: var(--muted); font-size: .85rem; }
.pep p { color: var(--muted); font-size: .95rem; }
.pep__foot { margin-top: auto; display: flex; flex-wrap: wrap; gap: 6px; }
.empty { text-align: center; color: var(--muted); padding: 40px; grid-column: 1 / -1; }

/* ---------- Calculator ---------- */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 820px) { .calc { grid-template-columns: 1fr; } }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }
.field .hint { font-weight: 400; color: var(--muted); font-size: .85rem; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; padding: 12px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px var(--primary-soft); }
.contact-form { max-width: 520px; }
.result {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-md); position: sticky; top: 86px;
}
.result__big { text-align: center; padding: 18px; border-radius: var(--radius-sm); background: var(--primary-soft); margin-bottom: 18px; }
.result__big .n { font-size: 2.6rem; font-weight: 800; color: var(--primary-dark); font-family: var(--font-mono); line-height: 1.1; }
.result__big .u { color: var(--primary-dark); font-weight: 600; }
.result__row { display: flex; justify-content: space-between; gap: 10px; padding: 12px 0; border-top: 1px solid var(--border); }
.result__row:first-of-type { border-top: 0; }
.result__row b { font-family: var(--font-mono); }
.syringe { margin: 14px 0 4px; }
.syringe svg { width: 100%; height: auto; }

/* ---------- Prose (articles) ---------- */
.prose { max-width: 72ch; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 1.6em; }
.prose h3 { margin-top: 1.3em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: .35em; }
.prose blockquote {
  border-left: 4px solid var(--primary); padding: 6px 18px; color: var(--muted);
  background: var(--surface-2); border-radius: 0 8px 8px 0;
}
.prose code { font-family: var(--font-mono); background: var(--surface-2); padding: 2px 6px; border-radius: 6px; font-size: .9em; }
.prose table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.prose th { background: var(--surface-2); }

.guide-layout { display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: start; }
@media (max-width: 820px) { .guide-layout { grid-template-columns: 1fr; } }
.toc--sticky { position: sticky; top: 86px; }
@media (max-width: 820px) { .toc--sticky { position: static; } }

/* table of contents */
.toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; box-shadow: var(--shadow-sm); }
.toc strong { display: block; margin-bottom: 8px; font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.toc ol { margin: 0; padding-left: 1.2em; }
.toc a { color: var(--muted); }
.toc a:hover { color: var(--primary-dark); }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin-inline: auto; }
.faq details {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 4px 20px; margin-bottom: 12px; box-shadow: var(--shadow-sm);
}
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.5rem; color: var(--primary-dark); font-weight: 400; transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 16px; }

/* ---------- Section helpers ---------- */
.band { background: var(--surface); border-block: 1px solid var(--border); }
.cta-band { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; border-radius: var(--radius); padding: clamp(28px, 5vw, 48px); text-align: center; }
.cta-band h2, .cta-band p { color: #fff; }
.cta-band p { opacity: .92; max-width: 56ch; margin: 10px auto 22px; }
.cta-band .btn--primary { background: #fff; color: var(--primary-dark); }
.cta-band .btn--primary:hover { background: #ecfeff; color: var(--primary-dark); }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface); border-top: 1px solid var(--border); padding-block: 48px 28px; margin-top: 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 12px; }
.footer-grid ul { list-style: none; padding: 0; display: grid; gap: 8px; }
.footer-grid a { color: var(--muted); font-size: .95rem; }
.footer-grid a:hover { color: var(--primary-dark); }
.footer-grid p { color: var(--muted); font-size: .95rem; max-width: 34ch; }
.footer-bottom { border-top: 1px solid var(--border); margin-top: 32px; padding-top: 18px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; color: var(--muted); font-size: .85rem; }

/* ---------- Cart badge in nav ---------- */
.cart-link { position: relative; }
.cart-count {
  display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 6px;
  margin-left: 6px; border-radius: 999px; background: var(--accent); color: #fff;
  font-size: .72rem; font-weight: 800; line-height: 1;
}
.cart-count.is-empty { background: color-mix(in srgb, var(--text) 30%, transparent); }

/* ---------- Products (shop) ---------- */
.shop-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.product {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
  transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
}
.product:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.product__media {
  position: relative; aspect-ratio: 16 / 10; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary-soft), color-mix(in srgb, var(--accent) 16%, var(--surface)));
}
.product__media span { font-size: 2.4rem; font-weight: 800; color: var(--primary-dark); letter-spacing: .04em; opacity: .85; }
.product__tag {
  position: absolute; top: 12px; left: 12px; background: var(--text); color: var(--bg);
  font-size: .72rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; letter-spacing: .02em;
}
.product__body { padding: 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product__cat { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--primary-dark); }
.product__body h3 { font-size: 1.1rem; }
.product__body .alias { color: var(--muted); font-size: .85rem; }
.product__body p { color: var(--muted); font-size: .92rem; }
.product__foot { margin-top: auto; padding-top: 12px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.product__foot .btn { padding: 9px 16px; font-size: .92rem; }
.price { font-size: 1.3rem; font-weight: 800; color: var(--text); font-family: var(--font-mono); }

/* ---------- Product detail ---------- */
.crumbs { font-size: .85rem; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--primary-dark); }
.crumbs span { margin: 0 4px; }
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
@media (max-width: 800px) { .product-detail { grid-template-columns: 1fr; gap: 22px; } }
.product-detail__media {
  position: relative; aspect-ratio: 1 / 1; border-radius: var(--radius); display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary-soft), color-mix(in srgb, var(--accent) 16%, var(--surface)));
  border: 1px solid var(--border);
}
.product-detail__media span { font-size: 4rem; font-weight: 800; color: var(--primary-dark); opacity: .85; }
.product-detail__info h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin-top: 4px; }
.product-detail__info .alias { color: var(--muted); margin-bottom: 12px; }
.product-detail__price { display: flex; align-items: center; gap: 12px; margin: 8px 0 14px; }
.product-detail__buy { margin: 16px 0 22px; max-width: 360px; }
.spec { width: 100%; border-collapse: collapse; font-size: .92rem; margin-top: 6px; }
.spec th, .spec td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.spec th { width: 34%; color: var(--muted); font-weight: 600; }

/* product card title links */
.product__body h3 a { color: var(--text); }
.product__body h3 a:hover { color: var(--primary-dark); text-decoration: none; }

/* ---------- Cart page ---------- */
.cart-layout { display: grid; grid-template-columns: 1fr; gap: 24px; }
.cart-list { display: flex; flex-direction: column; gap: 12px; }
.cart-row {
  display: grid; grid-template-columns: 1fr auto auto auto; align-items: center; gap: 16px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 14px 16px; box-shadow: var(--shadow-sm);
}
.cart-row__info { display: flex; flex-direction: column; }
.cart-row__info .alias { color: var(--muted); font-size: .82rem; }
.cart-row__price { font-family: var(--font-mono); font-weight: 700; min-width: 78px; text-align: right; }
.cart-row__rm { background: transparent; border: 0; color: var(--muted); cursor: pointer; font-size: 1rem; padding: 6px; border-radius: 6px; }
.cart-row__rm:hover { color: #dc2626; background: var(--surface-2); }
.qty { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--border); border-radius: 999px; padding: 2px; }
.qty__btn { width: 30px; height: 30px; border: 0; background: transparent; cursor: pointer; font-size: 1.1rem; color: var(--text); border-radius: 999px; }
.qty__btn:hover { background: var(--surface-2); }
.qty__n { min-width: 26px; text-align: center; font-weight: 700; font-variant-numeric: tabular-nums; }
.cart-summary {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-md); align-self: start;
}
.cart-summary h3 { margin-bottom: 10px; }
@media (min-width: 860px) {
  .cart-layout { grid-template-columns: 1fr 320px; align-items: start; }
}
@media (max-width: 520px) {
  .cart-row { grid-template-columns: 1fr auto; row-gap: 10px; }
  .cart-row__price { text-align: left; }
}

/* trust badges */
.trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 720px) { .trust { grid-template-columns: repeat(2, 1fr); } }
.trust__item { display: flex; gap: 12px; align-items: center; }
.trust__item .ic { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary-dark); flex: 0 0 auto; }
.trust__item b { display: block; font-size: .95rem; }
.trust__item span { color: var(--muted); font-size: .82rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px);
  background: var(--text); color: var(--bg); padding: 12px 20px; border-radius: 999px;
  box-shadow: var(--shadow-lg); font-weight: 600; font-size: .92rem; z-index: 300;
  opacity: 0; pointer-events: none; transition: .22s ease; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Utilities ---------- */
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 12px; } .mt-2 { margin-top: 24px; } .mt-3 { margin-top: 36px; }
.mb-2 { margin-bottom: 24px; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }