/* HumanPulse design system — "clinical editorial".
   Uses only theme tokens (themes.css) and CSS logical properties (RTL-safe). */

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
html[lang="ar"] body { font-family: "IBM Plex Sans Arabic", "Atkinson Hyperlegible", system-ui, sans-serif; }
h1, h2, h3, h4, .display {
  font-family: "Lexend", "Atkinson Hyperlegible", system-ui, sans-serif;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 0 0 .5em;
}
html[lang="ar"] h1, html[lang="ar"] h2, html[lang="ar"] h3, html[lang="ar"] h4 { font-family: "IBM Plex Sans Arabic", sans-serif; letter-spacing: 0; }
h1 { font-size: clamp(2rem, 4.4vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.15rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
img, svg { max-width: 100%; }
small, .muted { color: var(--fg-muted); }
.tnum { font-variant-numeric: tabular-nums; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; inset-inline-start: 1rem; top: -60px; z-index: 100; background: var(--accent); color: var(--accent-fg); padding: .6rem 1rem; border-radius: 8px; }
.skip-link:focus { top: 1rem; }
.container { width: min(1200px, 100% - 2rem); margin-inline: auto; }
.narrow { width: min(820px, 100% - 2rem); margin-inline: auto; }
.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section-tight { padding-block: 2.5rem; }
.eyebrow { font-family: "Lexend", sans-serif; text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 600; color: var(--accent-2); margin-bottom: .75rem; display: inline-flex; gap: .5rem; align-items: center; }
.eyebrow::before { content: ""; inline-size: 18px; block-size: 2px; background: currentColor; border-radius: 2px; }
.lead { font-size: 1.2rem; color: var(--fg-muted); max-width: 60ch; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.75rem; }
.section-head p { margin: 0; color: var(--fg-muted); max-width: 62ch; }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--bg-elevated); --btn-fg: var(--fg); --btn-border: var(--border);
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 44px; padding: .6rem 1.15rem; border-radius: 12px;
  border: 1px solid var(--btn-border); background: var(--btn-bg); color: var(--btn-fg);
  font: 600 .98rem/1.2 "Lexend", sans-serif; text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: transform .12s ease, background-color .15s ease, box-shadow .15s ease, border-color .15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); color: var(--btn-fg); }
.btn:active { transform: translateY(0); }
.btn-primary { --btn-bg: var(--accent); --btn-fg: var(--accent-fg); --btn-border: var(--accent); }
.btn-primary:hover { --btn-bg: var(--accent-strong); }
.btn-ghost { --btn-bg: transparent; --btn-border: transparent; }
.btn-ghost:hover { --btn-bg: var(--accent-soft); box-shadow: none; }
.btn-sm { min-height: 36px; padding: .35rem .8rem; font-size: .88rem; border-radius: 10px; }
.btn-block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.icon { inline-size: 1.15em; block-size: 1.15em; flex: none; }

/* ---------- Header ---------- */
.maintenance { background: var(--warning); color: #fff; text-align: center; padding: .45rem 1rem; font-weight: 600; font-size: .92rem; }
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 1rem; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .55rem; text-decoration: none; color: var(--fg); flex: none; }
.brand img { inline-size: 38px; block-size: 38px; }
.brand-word { font: 700 1.35rem/1 "Lexend", sans-serif; letter-spacing: -.02em; }
.brand-word b { font-weight: 700; color: var(--accent-2); }
.main-nav { display: flex; gap: .15rem; margin-inline-start: .5rem; }
.main-nav a { color: var(--fg-muted); text-decoration: none; font: 500 .95rem "Lexend", sans-serif; padding: .5rem .7rem; border-radius: 10px; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--fg); background: var(--accent-soft); }
.header-tools { margin-inline-start: auto; display: flex; align-items: center; gap: .5rem; }
.header-search { position: relative; }
.header-search input[type=search] { inline-size: 210px; min-height: 40px; padding-inline: 2.2rem .75rem; border-radius: 12px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--fg); font: inherit; font-size: .95rem; }
.header-search .icon { position: absolute; inset-inline-start: .7rem; top: 50%; transform: translateY(-50%); color: var(--fg-muted); }
.pref-select { min-height: 40px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--fg); padding-inline: .5rem; font: inherit; font-size: .9rem; max-inline-size: 9.5rem; }
.menu-toggle { display: none; }
.mobile-panel { display: none; }
.header-search { flex: none; }
@media (max-width: 1180px) {
  .header-search { display: none; }
}
@media (max-width: 960px) {
  .main-nav, .header-tools .pref-select, .header-search { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-panel[data-open="true"] { display: block; border-top: 1px solid var(--border); padding: 1rem 0 1.25rem; }
  .mobile-panel nav { display: grid; gap: .25rem; margin-bottom: 1rem; }
  .mobile-panel nav a { padding: .7rem .5rem; text-decoration: none; color: var(--fg); font: 500 1.05rem "Lexend", sans-serif; border-radius: 10px; }
  .mobile-panel nav a:hover { background: var(--accent-soft); }
  .mobile-prefs { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
  .mobile-prefs .pref-select { display: block; max-inline-size: none; inline-size: 100%; }
}

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 4.5rem); border-bottom: 1px solid var(--border); }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--grid-line) 45%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--grid-line) 45%, transparent) 1px, transparent 1px);
  background-size: 60px 60px, 60px 60px, 12px 12px, 12px 12px;
  mask-image: radial-gradient(ellipse 80% 70% at 60% 30%, #000 30%, transparent 75%);
}
.hero::after { content: ""; position: absolute; z-index: -1; inset-block-start: -20%; inset-inline-end: -10%; inline-size: 55%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--accent-2) 22%, transparent), transparent 65%); filter: blur(10px); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1 { max-width: 15ch; }
.hero h1 em { font-style: normal; background: var(--brand-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-search { margin-top: 1.75rem; display: flex; gap: .5rem; padding: .4rem; border-radius: 18px; background: var(--bg-elevated); border: 1px solid var(--border); box-shadow: var(--shadow); max-width: 620px; }
.hero-search input[type=search] { flex: 1; border: 0; background: transparent; outline: none; min-width: 0; border: 0; background: transparent; color: var(--fg); font: inherit; font-size: 1.1rem; padding-inline: .9rem; min-height: 52px; }
.hero-search input:focus { outline: none; }
.hero-search:focus-within { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); }
.quick-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; align-items: center; }
.quick-chips span { color: var(--fg-muted); font-size: .9rem; }
.chip { display: inline-flex; align-items: center; gap: .35rem; padding: .35rem .8rem; border-radius: 999px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--fg); text-decoration: none; font-size: .9rem; min-height: 34px; }
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip[aria-pressed="true"], .chip.is-active { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }

/* Signature: live readout card with drawn ECG line */
.readout { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow); padding: 1.4rem; position: relative; }
.readout-top { display: flex; justify-content: space-between; align-items: center; font: 500 .85rem "Lexend", sans-serif; color: var(--fg-muted); }
.live-dot { display: inline-flex; align-items: center; gap: .4rem; color: var(--accent-2); }
.live-dot::before { content: ""; inline-size: 8px; block-size: 8px; border-radius: 50%; background: currentColor; animation: blink 1.6s ease-in-out infinite; }
.ecg { inline-size: 100%; block-size: auto; margin-block: .75rem; }
.ecg path { fill: none; stroke: url(#ecgGradient); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: draw 2.6s cubic-bezier(.6,.1,.2,1) .3s forwards; }
.readout-rows { display: grid; gap: .6rem; }
.readout-row { display: grid; grid-template-columns: 1fr auto; gap: .5rem; align-items: center; padding: .65rem .8rem; border-radius: 12px; background: var(--bg-sunken); font-size: .95rem; }
.readout-row b { font: 600 1.05rem "Lexend", sans-serif; }
.flow { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: 1rem; font: 500 .8rem "Lexend", sans-serif; color: var(--fg-muted); }
.flow span { padding: .25rem .55rem; border-radius: 8px; background: var(--accent-soft); color: var(--accent-strong); }
[data-theme="midnight"] .flow span, [data-theme="graphite"] .flow span { color: var(--fg); }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes blink { 50% { opacity: .25; } }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.reveal { animation: rise .7s cubic-bezier(.2,.7,.2,1) both; }
.reveal-2 { animation-delay: .12s; } .reveal-3 { animation-delay: .24s; } .reveal-4 { animation-delay: .36s; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } .readout { max-width: 520px; } }

/* ---------- Stats strip ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.stat { padding: 1.1rem 1.2rem; border-inline-start: 3px solid var(--accent-2); background: var(--bg-elevated); border-radius: 0 14px 14px 0; }
[dir="rtl"] .stat { border-radius: 14px 0 0 14px; }
.stat b { display: block; font: 600 2rem/1.1 "Lexend", sans-serif; }
.stat span { color: var(--fg-muted); font-size: .92rem; }
@media (max-width: 700px) { .stats { grid-template-columns: 1fr 1fr; } }

/* ---------- Cards & grids ---------- */
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); }
.card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 18px; padding: 1.35rem; }
.card-shadow { box-shadow: var(--shadow); }

.tool-card { position: relative; display: flex; flex-direction: column; gap: .55rem; padding: 1.25rem 1.25rem 1.1rem; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 18px; text-decoration: none; color: var(--fg); transition: border-color .15s, transform .15s, box-shadow .15s; overflow: hidden; }
.tool-card::before { content: ""; position: absolute; inset-block: 0; inset-inline-start: 0; inline-size: 4px; background: var(--ev, var(--border)); }
.tool-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); transform: translateY(-2px); box-shadow: var(--shadow); color: var(--fg); }
.tool-card h3 { margin: 0; font-size: 1.08rem; }
.tool-card p { margin: 0; color: var(--fg-muted); font-size: .95rem; }
.tool-card .meta { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; padding-top: .4rem; align-items: center; }
.tool-card.is-planned { background: var(--bg-sunken); }
.tool-card .fav-mark { position: absolute; inset-block-start: .9rem; inset-inline-end: .9rem; color: var(--warning); }
.ev-strong { --ev: var(--accent-2); } .ev-moderate { --ev: var(--accent); } .ev-limited { --ev: var(--warning); } .ev-emerging { --ev: var(--fg-muted); }

.badge { display: inline-flex; align-items: center; gap: .3rem; padding: .18rem .55rem; border-radius: 999px; font: 600 .74rem/1.4 "Lexend", sans-serif; letter-spacing: .01em; background: var(--bg-sunken); color: var(--fg-muted); border: 1px solid var(--border); white-space: nowrap; }
.badge-accent { background: var(--accent-soft); color: var(--accent-strong); border-color: transparent; }
.badge-teal { background: var(--accent-2-soft); color: var(--accent-2); border-color: transparent; }
.badge-warn { background: color-mix(in srgb, var(--warning) 14%, transparent); color: var(--warning); border-color: transparent; }
[data-theme="midnight"] .badge-accent, [data-theme="graphite"] .badge-accent { color: var(--fg); }
.ev-dot { inline-size: 8px; block-size: 8px; border-radius: 50%; background: var(--ev); display: inline-block; }

.tile { display: flex; gap: .9rem; align-items: center; padding: 1rem 1.1rem; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 16px; text-decoration: none; color: var(--fg); transition: border-color .15s, background .15s; }
.tile:hover { border-color: var(--accent); background: var(--accent-soft); color: var(--fg); }
.tile img, .tile .illus { inline-size: 46px; block-size: 46px; flex: none; }
.tile b { display: block; font: 600 1rem "Lexend", sans-serif; }
.tile small { display: block; }

.problem-card { display: grid; grid-template-columns: 56px 1fr; gap: 1rem; align-items: start; padding: 1.25rem; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 18px; text-decoration: none; color: var(--fg); }
.problem-card:hover { border-color: var(--accent-2); color: var(--fg); }
.problem-card h3 { margin: 0 0 .25rem; }
.problem-card p { margin: 0; color: var(--fg-muted); font-size: .95rem; }
.problem-card img { inline-size: 56px; block-size: 56px; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 1rem; }
.step { position: relative; padding: 1.25rem; border-radius: 18px; background: var(--bg-elevated); border: 1px solid var(--border); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font: 600 .85rem "Lexend", sans-serif; color: var(--accent-2); display: block; margin-bottom: .6rem; }
.step h3 { font-size: 1.05rem; margin-bottom: .3rem; }
.step p { margin: 0; color: var(--fg-muted); font-size: .95rem; }

.trust { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: center; }
.trust ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .9rem; }
.trust li { display: grid; grid-template-columns: 28px 1fr; gap: .6rem; }
.trust li svg { color: var(--accent-2); margin-top: .2rem; }
@media (max-width: 860px) { .trust { grid-template-columns: 1fr; } }

.band { background: var(--bg-sunken); border-block: 1px solid var(--border); }
.cta-band { background: var(--brand-gradient); color: #fff; border-radius: 24px; padding: clamp(1.75rem, 4vw, 3rem); display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin: 0 0 .3rem; }
.cta-band p { margin: 0; opacity: .92; }
.cta-band .btn { --btn-bg: #fff; --btn-fg: #0c1f35; --btn-border: #fff; }

/* ---------- Page header & breadcrumbs ---------- */
.page-head { padding-block: 2.5rem 1.5rem; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, var(--bg-sunken), var(--bg)); }
.breadcrumbs { font-size: .88rem; color: var(--fg-muted); margin-bottom: .75rem; display: flex; flex-wrap: wrap; gap: .4rem; }
.breadcrumbs a { color: var(--fg-muted); }
.breadcrumbs span[aria-hidden] { opacity: .5; }

/* ---------- Library filters ---------- */
.filters { display: flex; flex-wrap: wrap; gap: .6rem; align-items: end; margin-block: 1.5rem; }
.filters .field { margin: 0; }
.filters input[type=search] { min-inline-size: min(100%, 320px); }
.pagination { display: flex; gap: .5rem; justify-content: center; margin-top: 2rem; align-items: center; }

/* ---------- Forms ---------- */
.field { display: grid; gap: .35rem; margin-bottom: 1.1rem; }
.field > label, .field legend, .label { font: 600 .95rem "Lexend", sans-serif; color: var(--fg); }
.field .help { font-size: .86rem; color: var(--fg-muted); }
.req { color: var(--danger); margin-inline-start: .15rem; }
.opt { font-weight: 400; color: var(--fg-muted); font-size: .82rem; margin-inline-start: .35rem; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=search], select, textarea {
  inline-size: 100%; min-height: 46px; padding: .55rem .8rem; border-radius: 12px; border: 1px solid var(--border);
  background: var(--bg-elevated); color: var(--fg); font: inherit; font-size: 1rem;
}
input[type=number] { font-variant-numeric: tabular-nums; }
input:hover, select:hover, textarea:hover { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
input:focus, select:focus, textarea:focus { outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent); border-color: var(--accent); }
.field.has-error input, .field.has-error select { border-color: var(--danger); }
.error-text { color: var(--danger); font-size: .88rem; font-weight: 600; }
.unit-input { display: grid; grid-template-columns: 1fr auto; }
.unit-input input { border-start-end-radius: 0; border-end-end-radius: 0; }
.unit-input select { inline-size: auto; min-inline-size: 7rem; border-start-start-radius: 0; border-end-start-radius: 0; border-inline-start: 0; background: var(--bg-sunken); font-size: .92rem; }
.unit-input .unit-static { display: inline-flex; align-items: center; padding-inline: .8rem; border: 1px solid var(--border); border-inline-start: 0; border-radius: 0 12px 12px 0; background: var(--bg-sunken); color: var(--fg-muted); font-size: .92rem; white-space: nowrap; }
[dir="rtl"] .unit-input .unit-static { border-radius: 12px 0 0 12px; }

fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.options { display: grid; gap: .45rem; }
.option { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .7rem; padding: .7rem .85rem; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-elevated); cursor: pointer; min-height: 48px; transition: border-color .12s, background .12s; }
.option:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.field > label.option { font: inherit; font-weight: 400; }
.option input { inline-size: 1.15rem; block-size: 1.15rem; accent-color: var(--accent); margin: 0; }
.option:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.option:has(input:focus-visible) { outline: 3px solid var(--accent); outline-offset: 2px; }
.option .pts { font: 600 .8rem "Lexend", sans-serif; color: var(--fg-muted); padding: .1rem .5rem; border-radius: 999px; background: var(--bg-sunken); }
.option:has(input:checked) .pts { background: var(--accent); color: var(--accent-fg); }
.option-text small { display: block; color: var(--fg-muted); font-size: .84rem; margin-top: .1rem; }
.form-group-title { font: 600 .82rem "Lexend", sans-serif; text-transform: uppercase; letter-spacing: .08em; color: var(--accent-2); margin: 1.5rem 0 .75rem; padding-bottom: .4rem; border-bottom: 1px dashed var(--border); }
.form-group-title:first-child { margin-top: 0; }
.form-errors { padding: .85rem 1rem; border-radius: 12px; background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent); margin-bottom: 1rem; font-weight: 600; }

/* ---------- Tool page ---------- */
.tool-head { padding-block: 2.25rem 1.75rem; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, var(--bg-sunken), var(--bg)); }
.tool-head-grid { display: grid; grid-template-columns: 1fr auto; gap: 1.5rem; align-items: start; }
.tool-head h1 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); max-width: 26ch; }
.tool-question { font-size: 1.15rem; color: var(--fg-muted); max-width: 62ch; margin-bottom: 1rem; }
.tool-meta { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.tool-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.tool-illus { inline-size: 104px; block-size: 104px; padding: 14px; border-radius: 28px; background: var(--bg-elevated); border: 1px solid var(--border); box-shadow: var(--shadow); }
.tool-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.5rem; align-items: start; padding-block: 2rem; }
.calc-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 22px; padding: clamp(1.1rem, 2.5vw, 1.75rem); }
.calc-card h2 { font-size: 1.25rem; display: flex; align-items: center; gap: .5rem; }
.calc-actions { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: 1.25rem; position: sticky; bottom: 0; background: linear-gradient(transparent, var(--bg-elevated) 30%); padding-top: 1rem; }
.result-col { position: sticky; top: 92px; }
@media (max-width: 960px) {
  .tool-layout { grid-template-columns: 1fr; }
  .result-col { position: static; }
  .tool-head-grid { grid-template-columns: 1fr; }
  .tool-illus { display: none; }
}

.result-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); }
.result-empty { padding: 2rem 1.5rem; text-align: center; color: var(--fg-muted); }
.result-empty img { inline-size: 88px; opacity: .9; margin-bottom: .5rem; }
.readout-main { padding: 1.5rem; background: color-mix(in srgb, var(--lvl, var(--accent)) 9%, var(--bg-elevated)); border-bottom: 1px solid var(--border); position: relative; }
.readout-main::before { content: ""; position: absolute; inset-block-start: 0; inset-inline: 0; block-size: 4px; background: var(--lvl, var(--accent)); }
.readout-label { font: 600 .82rem "Lexend", sans-serif; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-muted); }
.readout-value { font: 600 clamp(2.4rem, 6vw, 3.4rem)/1.05 "Lexend", sans-serif; font-variant-numeric: tabular-nums; margin: .25rem 0 .5rem; color: var(--fg); letter-spacing: -.02em; }
.readout-value.is-text { font-size: clamp(1.6rem, 3.6vw, 2.2rem); letter-spacing: -.01em; }
.readout-value small { font-size: 1.05rem; color: var(--fg-muted); font-weight: 500; margin-inline-start: .3rem; letter-spacing: 0; }
.category-pill { display: inline-flex; align-items: center; gap: .45rem; padding: .3rem .8rem; border-radius: 999px; background: var(--lvl, var(--accent)); color: #fff; font: 600 .9rem "Lexend", sans-serif; }
.category-pill::before { content: ""; inline-size: 7px; block-size: 7px; border-radius: 50%; background: #fff; }
.lvl-normal { --lvl: var(--risk-normal); } .lvl-low { --lvl: var(--risk-low); } .lvl-moderate { --lvl: var(--risk-moderate); }
.lvl-high { --lvl: var(--risk-high); } .lvl-very-high { --lvl: var(--risk-very-high); } .lvl-info { --lvl: var(--risk-info); }
.result-body { padding: 1.25rem 1.5rem 1.5rem; display: grid; gap: 1.25rem; }
.result-body h3 { font-size: .95rem; text-transform: uppercase; letter-spacing: .07em; color: var(--fg-muted); margin-bottom: .6rem; }
.kv { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .2rem 1rem; margin: 0; }
.kv dt { color: var(--fg-muted); }
.kv dd { margin: 0; font-weight: 700; text-align: end; font-variant-numeric: tabular-nums; }
.kv > * { padding-block: .45rem; border-bottom: 1px solid var(--border); }
.notice { display: grid; grid-template-columns: 22px 1fr; gap: .6rem; padding: .8rem .95rem; border-radius: 12px; font-size: .94rem; }
.notice-warn { background: color-mix(in srgb, var(--warning) 12%, transparent); color: var(--fg); border: 1px solid color-mix(in srgb, var(--warning) 35%, transparent); }
.notice-info { background: var(--accent-soft); border: 1px solid transparent; }
.notice svg { color: var(--warning); margin-top: .15rem; }
.notice-info svg { color: var(--accent); }
.bullets { margin: 0; padding-inline-start: 1.1rem; display: grid; gap: .4rem; }
.bullets li::marker { color: var(--accent-2); }
.result-foot { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; border-top: 1px solid var(--border); background: var(--bg-sunken); font-size: .86rem; color: var(--fg-muted); }
.save-row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.save-row input { flex: 1; min-inline-size: 180px; }

/* ---------- Charts (server-rendered SVG) ---------- */
.chart { inline-size: 100%; block-size: auto; display: block; overflow: visible; }
.chart text { font-family: "Lexend", sans-serif; fill: var(--fg-muted); font-size: 13px; }
.chart .band { fill: var(--lvl); opacity: .85; }
.chart .band-label { font-size: 12px; fill: var(--fg-muted); }
.chart .marker { fill: var(--fg); }
.chart .marker-line { stroke: var(--fg); stroke-width: 2.5; }
.chart .marker-label { fill: var(--fg); font-weight: 600; font-size: 15px; }
.chart .axis-label { font-size: 12px; }
.chart .axis { stroke: var(--border); }
.chart .track { fill: var(--bg-sunken); }
.chart .bar { fill: var(--accent); }
.chart .bar.lvl-high { fill: var(--accent); }
.breakdown .bar { fill: var(--accent-2); }
.comparison .bar { fill: var(--lvl, var(--accent)); }
.chart .row-label { fill: var(--fg); font-size: 13px; }
.chart .row-value { fill: var(--fg); font-weight: 600; font-variant-numeric: tabular-nums; }
.chart-legend { display: flex; flex-wrap: wrap; gap: .4rem .9rem; font-size: .84rem; color: var(--fg-muted); margin-top: .5rem; }
.chart-legend span { display: inline-flex; align-items: center; gap: .35rem; }
.chart-legend i { inline-size: 10px; block-size: 10px; border-radius: 3px; background: var(--lvl); display: inline-block; }
.chart-summary { font-size: .86rem; color: var(--fg-muted); margin-top: .35rem; }

/* Decision pathway */
.pathway { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.pathway li { position: relative; padding-inline-start: 2.4rem; padding-bottom: 1rem; }
.pathway li::before { content: ""; position: absolute; inset-inline-start: .72rem; top: 1.7rem; bottom: 0; inline-size: 2px; background: var(--border); }
.pathway li:last-child::before { display: none; }
.pathway .node { position: absolute; inset-inline-start: 0; top: .15rem; inline-size: 1.5rem; block-size: 1.5rem; border-radius: 50%; display: grid; place-items: center; background: var(--bg-sunken); border: 2px solid var(--border); font: 600 .75rem "Lexend", sans-serif; }
.pathway li.decisive .node { background: var(--lvl, var(--accent)); border-color: var(--lvl, var(--accent)); color: #fff; }
.pathway .q { font-weight: 700; }
.pathway .a { display: inline-block; margin-top: .2rem; padding: .05rem .5rem; border-radius: 6px; background: var(--bg-sunken); font-size: .88rem; font-weight: 600; }
.pathway .o { display: block; margin-top: .25rem; color: var(--fg-muted); font-size: .92rem; }

/* Evidence */
.evidence-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); gap: 1rem; }
.evidence-item { padding: 1rem 1.1rem; border-radius: 14px; background: var(--bg-elevated); border: 1px solid var(--border); }
.evidence-item h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-muted); margin-bottom: .4rem; }
.evidence-item p { margin: 0; }
.evidence-level { display: flex; gap: 4px; margin-block: .35rem .5rem; }
.evidence-level i { flex: 1; block-size: 6px; border-radius: 3px; background: var(--border); }
.evidence-level i.on { background: var(--ev); }
.refs { margin: 0; padding-inline-start: 1.3rem; display: grid; gap: .65rem; }
.refs li { font-size: .95rem; }
.refs .kind { font: 600 .72rem "Lexend", sans-serif; text-transform: uppercase; letter-spacing: .06em; color: var(--accent-2); display: block; }
.study { border-inline-start: 3px solid var(--accent-2); padding: .25rem 0 .25rem 1rem; margin-bottom: 1rem; }
.tabs-nav { display: flex; gap: .25rem; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; overflow-x: auto; }
.tabs-nav a { padding: .8rem 1rem; text-decoration: none; color: var(--fg-muted); font: 500 .95rem "Lexend", sans-serif; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs-nav a:hover { color: var(--fg); border-color: var(--accent); }
.content-section { padding-block: 1rem 2.5rem; }
.content-section + .content-section { border-top: 1px solid var(--border); padding-top: 2.5rem; }
.version-table, .table { inline-size: 100%; border-collapse: collapse; font-size: .95rem; }
.table th, .table td, .version-table th, .version-table td { text-align: start; padding: .65rem .75rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th, .version-table th { font: 600 .8rem "Lexend", sans-serif; text-transform: uppercase; letter-spacing: .06em; color: var(--fg-muted); background: var(--bg-sunken); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 14px; background: var(--bg-elevated); }
.matrix td.yes { color: var(--accent-2); font-weight: 700; text-align: center; }
.matrix td.no { color: var(--border); text-align: center; }
.matrix th[scope=row] { font: 400 .95rem "Atkinson Hyperlegible", sans-serif; text-transform: none; letter-spacing: 0; color: var(--fg); background: transparent; }

/* Navigator */
.nav-entry { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1.25rem; border: 1px solid var(--border); border-radius: 18px; background: var(--bg-elevated); }
.nav-entry + .nav-entry { margin-top: .9rem; }
.nav-entry h3 { margin-bottom: .3rem; }
.nav-entry dl { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1rem; margin: .6rem 0 0; font-size: .93rem; }
.nav-entry dt { color: var(--fg-muted); }
.nav-entry dd { margin: 0; }
@media (max-width: 640px) { .nav-entry { grid-template-columns: 1fr; } .nav-entry dl { grid-template-columns: 1fr; } }

/* ---------- Messages ---------- */
.messages { list-style: none; margin: 1rem auto 0; padding: 0; display: grid; gap: .5rem; }
.message { padding: .8rem 1rem; border-radius: 12px; background: var(--accent-soft); border: 1px solid var(--border); font-weight: 600; }
.message.success { background: color-mix(in srgb, var(--success) 12%, transparent); }
.message.warning, .message.error { background: color-mix(in srgb, var(--danger) 10%, transparent); }

/* ---------- Dialog (login / payment) ---------- */
dialog.modal { inline-size: min(460px, 100% - 1.5rem); max-block-size: calc(100dvh - 2rem); border: 1px solid var(--border); border-radius: 22px; padding: 0; background: var(--bg-elevated); color: var(--fg); box-shadow: 0 30px 80px -20px rgba(0,0,0,.45); }
dialog.modal::backdrop { background: rgba(8, 18, 32, .55); backdrop-filter: blur(3px); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 1.25rem 1.4rem .25rem; }
.modal-head h2 { font-size: 1.3rem; margin: 0; display: flex; gap: .55rem; align-items: center; }
.modal-head img { inline-size: 30px; }
.modal-body { padding: 1rem 1.4rem 1.4rem; }
.modal-close { inline-size: 40px; block-size: 40px; border-radius: 10px; border: 0; background: transparent; color: var(--fg-muted); cursor: pointer; display: grid; place-items: center; }
.modal-close:hover { background: var(--bg-sunken); color: var(--fg); }
.segmented { display: grid; grid-template-columns: 1fr 1fr; padding: 4px; border-radius: 12px; background: var(--bg-sunken); margin-bottom: 1.1rem; }
.segmented button { min-height: 40px; border: 0; border-radius: 9px; background: transparent; color: var(--fg-muted); font: 600 .95rem "Lexend", sans-serif; cursor: pointer; }
.segmented button[aria-selected="true"] { background: var(--bg-elevated); color: var(--fg); box-shadow: var(--shadow); }
.social-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.social-grid form { margin: 0; }
.social-btn { inline-size: 100%; justify-content: flex-start; font-size: .92rem; }
.social-btn svg { inline-size: 18px; block-size: 18px; }
.divider { display: flex; align-items: center; gap: .75rem; color: var(--fg-muted); font-size: .85rem; margin: 1.1rem 0; }
.divider::before, .divider::after { content: ""; flex: 1; block-size: 1px; background: var(--border); }
.modal-note { font-size: .82rem; color: var(--fg-muted); margin: .9rem 0 0; }
#payment-element { min-block-size: 120px; margin-block: 1rem; }
.status-line { min-block-size: 1.4em; font-size: .92rem; font-weight: 600; margin-top: .5rem; }
.status-line.error { color: var(--danger); }
.status-line.success { color: var(--success); }

/* ---------- Pricing ---------- */
.price-card { display: flex; flex-direction: column; gap: .75rem; padding: 1.6rem; border-radius: 22px; background: var(--bg-elevated); border: 1px solid var(--border); }
.price-card.featured { border: 2px solid var(--accent); box-shadow: var(--shadow); }
.price-card .price { font: 600 1.9rem "Lexend", sans-serif; }
.price-card ul { list-style: none; padding: 0; margin: 0 0 auto; display: grid; gap: .5rem; }
.price-card li { display: grid; grid-template-columns: 22px 1fr; gap: .4rem; }
.price-card li svg { color: var(--accent-2); margin-top: .2rem; }

/* ---------- Prose (about/terms) ---------- */
.prose { max-width: 72ch; }
.prose h2 { margin-top: 2.2rem; font-size: 1.4rem; }
.prose li { margin-bottom: .4rem; }

/* ---------- Footer ---------- */
.site-footer { margin-top: 4rem; border-top: 1px solid var(--border); background: var(--bg-elevated); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2rem; padding-block: 3rem 2rem; }
.footer-grid h2 { font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; color: var(--fg-muted); margin-bottom: .9rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.footer-grid a { color: var(--fg); text-decoration: none; font-size: .95rem; }
.footer-grid a:hover { color: var(--accent); text-decoration: underline; }
.footer-prefs { display: grid; gap: .6rem; }
.footer-prefs label { font-size: .85rem; color: var(--fg-muted); display: grid; gap: .25rem; }
.footer-prefs .pref-select { max-inline-size: none; inline-size: 100%; }
.disclaimer-bar { border-top: 1px solid var(--border); padding-block: 1.25rem; font-size: .86rem; color: var(--fg-muted); }
.copyright { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; justify-content: space-between; border-top: 1px solid var(--border); padding-block: 1.25rem; font-size: .9rem; }
.ams { display: inline-flex; align-items: center; gap: .6rem; }
.ams img { block-size: 32px; inline-size: auto; }
.ams-placeholder { display: inline-grid; place-items: center; block-size: 32px; padding-inline: .6rem; border-radius: 8px; border: 1px solid var(--border); font: 700 .8rem "Lexend", sans-serif; letter-spacing: .1em; color: var(--fg-muted); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Control panel ---------- */
.control-layout { display: grid; grid-template-columns: 220px 1fr; gap: 1.5rem; padding-block: 2rem; }
.control-nav { display: grid; gap: .2rem; align-content: start; position: sticky; top: 92px; }
.control-nav a { padding: .6rem .8rem; border-radius: 10px; text-decoration: none; color: var(--fg-muted); font: 500 .95rem "Lexend", sans-serif; }
.control-nav a[aria-current="page"], .control-nav a:hover { background: var(--accent-soft); color: var(--fg); }
.kpis { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: .8rem; margin-bottom: 1.5rem; }
.kpi { padding: 1rem; border-radius: 14px; background: var(--bg-elevated); border: 1px solid var(--border); }
.kpi b { display: block; font: 600 1.7rem "Lexend", sans-serif; }
.kpi span { color: var(--fg-muted); font-size: .88rem; }
.spark { display: flex; gap: 4px; align-items: end; block-size: 120px; padding-top: .5rem; }
.spark div { flex: 1; background: var(--accent-2); border-radius: 4px 4px 0 0; min-block-size: 2px; }
.check-ok { color: var(--success); font-weight: 700; }
.check-bad { color: var(--danger); font-weight: 700; }
@media (max-width: 860px) { .control-layout { grid-template-columns: 1fr; } .control-nav { position: static; display: flex; flex-wrap: wrap; } }

/* ---------- Report / print ---------- */
.report-sheet { background: #fff; color: #0c1f35; max-width: 820px; margin: 2rem auto; padding: 2.5rem; border-radius: 16px; border: 1px solid var(--border); }
.report-sheet .report-head { display: flex; justify-content: space-between; align-items: center; border-bottom: 2px solid #0b66c3; padding-bottom: 1rem; margin-bottom: 1.5rem; }
@media print {
  .site-header, .site-footer, .no-print, .calc-actions, .tool-actions, .messages, .skip-link, .maintenance { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .tool-layout { grid-template-columns: 1fr; }
  .result-card, .calc-card, .report-sheet { box-shadow: none; border: 1px solid #ccc; break-inside: avoid; }
  a { color: #000; }
  .report-sheet { margin: 0; padding: 0; border: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .ecg path { stroke-dashoffset: 0; }
}

/* allauth pages (password reset, email confirmation, social errors) */
.allauth-main { width: min(560px, 100% - 2rem); margin: 2.5rem auto; padding: clamp(1.25rem, 3vw, 2rem); background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 22px; box-shadow: var(--shadow); }
.allauth-main h1 { font-size: 1.6rem; }
.allauth-main form p, .allauth-main form div { margin-bottom: .9rem; }
.allauth-main label { display: block; font: 600 .95rem "Lexend", sans-serif; margin-bottom: .3rem; }
.allauth-main button, .allauth-main input[type=submit] { min-height: 44px; padding: .6rem 1.15rem; border-radius: 12px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-fg); font: 600 .98rem "Lexend", sans-serif; cursor: pointer; }
.allauth-main ul.errorlist { color: var(--danger); padding-inline-start: 1rem; }

/* RTL: charts are drawn left-to-right; English clinical content keeps its own direction per paragraph. */
.chart { direction: ltr; unicode-bidi: isolate; }
[dir="rtl"] :is(p, h1, h2, h3, li, dt, dd, legend, label, .option-text, .readout-label, .category-pill, .tool-question, .badge, .breadcrumbs a) { unicode-bidi: plaintext; }