:root {
  --ink: #0F0F0E;
  --paper: #ECEAE4;
  --accent: #FF4A1C;
  --cell-hover: #2A2926;
  --rule-dark: rgba(236, 234, 228, .28);
  --gutter: clamp(20px, 3vw, 40px);
  --sans: 'IBM Plex Sans Hebrew', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--accent); }
input[type=range] { accent-color: var(--ink); }
::selection { background: var(--accent); color: var(--ink); }

.mono { font-family: var(--mono); }
.label { font-family: var(--mono); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; }
.micro { font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
.ltr-end { text-align: right; }

/* Header */
.header { position: sticky; top: 0; z-index: 10; background: var(--paper); border-bottom: 1px solid var(--ink); }
.header__row {
  padding: 0 var(--gutter); min-height: 56px;
  display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: 24px;
}
.header__brand { font-weight: 500; font-size: 17px; letter-spacing: -.01em; }
.header__nav { display: flex; gap: 28px; }
.header__end { display: flex; justify-content: flex-end; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--ink); color: var(--paper); font-weight: 500;
}
.btn .mono { font-family: var(--mono); }
.btn--sm { height: 36px; padding: 0 18px; font-size: 14px; }
.btn--sm:hover { background: var(--accent); color: var(--ink); }
.btn--accent { height: 48px; padding: 0 24px; font-size: 16px; background: var(--accent); color: var(--ink); }
.btn--accent:hover { background: var(--paper); color: var(--ink); }

/* Hero */
.hero {
  background: var(--ink); color: var(--paper);
  padding: 28px var(--gutter) 40px;
  display: flex; flex-direction: column; gap: clamp(40px, 7vw, 96px);
}
.hero__strip { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.hero__foot {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 32px 64px; align-items: end;
  border-top: 1px solid var(--rule-dark); padding-top: 24px;
}
.hero h1 {
  margin: 0; font-weight: 300; font-size: clamp(28px, 3.6vw, 48px); line-height: 1.12;
  letter-spacing: -.02em; text-wrap: pretty; max-width: 22ch;
}
.hero__aside { display: flex; flex-direction: column; gap: 20px; max-width: 44ch; }
.hero__aside p { margin: 0; }
.hero__cta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.hero__meta { font-family: var(--mono); font-size: 12px; }

/* Facts strip */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); border-bottom: 1px solid var(--ink); }
.facts > div { padding: 16px var(--gutter); border-inline-end: 1px solid var(--ink); display: flex; flex-direction: column; gap: 4px; }
.facts > div:last-child { border-inline-end: 0; }
.facts__value { font-size: 20px; }

/* Sections */
section[id] { scroll-margin-top: 56px; }
.sec-head { display: flex; justify-content: space-between; padding: 14px var(--gutter); border-bottom: 1px solid var(--ink); }
.dark { background: var(--ink); color: var(--paper); }
.dark .sec-head { border-bottom-color: var(--rule-dark); }

/* Styles */
.style-row { display: grid; grid-template-columns: minmax(120px, 200px) minmax(0, 1fr); border-bottom: 1px solid var(--ink); }
.style-row__label { padding: 20px var(--gutter); border-inline-end: 1px solid var(--ink); display: flex; flex-direction: column; gap: 4px; }
.style-row__label > span:first-child { font-weight: 500; }
.style-row__label .mono { font-size: 12px; }
.style-row__sample { padding: 40px var(--gutter); }
.pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); border-bottom: 1px solid var(--ink); }
.pair > div { padding: 40px var(--gutter); display: flex; flex-direction: column; gap: 20px; }
.pair > div:first-child { border-inline-end: 1px solid var(--ink); }
.pair .mono { font-size: 12px; }

/* Tester */
.tester-bar { display: flex; flex-wrap: wrap; border-bottom: 1px solid var(--ink); }
.tester-bar__text {
  flex: 1 1 320px; display: flex; align-items: center; gap: 16px;
  padding: 10px var(--gutter); border-inline-end: 1px solid var(--ink);
}
.tester-bar__text input {
  flex: 1; min-width: 0; height: 36px; border: 0; background: transparent;
  font: inherit; font-size: 17px; color: var(--ink); outline: none;
}
.tester-bar__weights { display: flex; align-items: center; gap: 8px; padding: 10px 20px; border-inline-end: 1px solid var(--ink); }
.toggle {
  height: 32px; padding: 0 14px; border: 1px solid var(--ink); background: transparent; color: var(--ink);
  font: inherit; font-size: 14px; cursor: pointer;
}
.toggle[aria-pressed=true] { background: var(--ink); color: var(--paper); }
.tester-bar__size { display: flex; align-items: center; gap: 14px; padding: 10px var(--gutter); }
.tester-bar__size input { width: 160px; }
.tester-bar__size output { font-family: var(--mono); font-size: 12px; min-width: 44px; }
.tester-stage {
  padding: 48px var(--gutter); min-height: 320px; display: flex; align-items: center;
  border-bottom: 1px solid var(--ink);
}
.tester-live {
  font-family: 'Frank Ehrlich', sans-serif; line-height: 1.3; min-height: 1.3em;
  overflow-wrap: anywhere; width: 100%;
}
.tester-svg { width: 100%; }

/* Glyphs */
.glyphs { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.glyph-focus {
  padding: 40px var(--gutter); border-inline-end: 1px solid var(--rule-dark); border-bottom: 1px solid var(--rule-dark);
  display: flex; flex-direction: column; justify-content: space-between; gap: 24px; min-height: 420px;
}
.glyph-focus__art { display: flex; justify-content: center; align-items: center; flex: 1; }
.glyph-focus__caption { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.glyph-focus__caption > span:first-child { font-size: 20px; }
.glyph-focus__caption .mono { font-size: 12px; }
.glyph-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(72px, 1fr)); align-content: start; }
.glyph-cell {
  aspect-ratio: 1; border: 0; border-bottom: 1px solid var(--rule-dark); border-inline-end: 1px solid var(--rule-dark);
  background: transparent; padding: 10px; display: flex; align-items: center; justify-content: center; cursor: pointer;
}
.glyph-cell:hover { background: var(--cell-hover); }
.glyph-cell[aria-pressed=true] { background: var(--accent); }

/* Download */
.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); border-bottom: 1px solid var(--ink); }
.dl-card { padding: 32px var(--gutter); display: flex; flex-direction: column; gap: 28px; }
.dl-card:first-child { border-inline-end: 1px solid var(--ink); }
.dl-card__head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.dl-card__head > span:first-child { font-size: 27px; }
.dl-card__head .mono { font-size: 12px; }
.dl-card__terms { display: flex; flex-direction: column; border-top: 1px solid var(--ink); }
.dl-card__terms > div { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--ink); font-size: 14px; }
.dl-btn {
  height: 52px; border: 0; background: var(--ink); color: var(--paper);
  font: inherit; font-size: 15px; font-weight: 500; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; padding: 0 20px;
}
.dl-btn .mono { font-size: 13px; }
.dl-btn:hover:not(:disabled) { background: var(--accent); color: var(--ink); }
.dl-btn:disabled { opacity: .4; cursor: not-allowed; }

/* Info */
.info { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); border-bottom: 1px solid var(--ink); }
.info__notes { padding: 32px var(--gutter); border-inline-end: 1px solid var(--ink); display: flex; flex-direction: column; gap: 16px; }
.info__notes h2 { margin: 0; font-weight: 300; font-size: 33px; line-height: 1.15; letter-spacing: -.02em; }
.info__notes p { margin: 0; max-width: 60ch; }
.info dl { margin: 0; padding: 32px var(--gutter); display: flex; flex-direction: column; }
.info dl > div { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--ink); }
.info dd { margin: 0; }

.footer { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 20px var(--gutter); }

/* Narrow screens: the prototype has no mobile rules; keep the header on one row. */
@media (max-width: 640px) {
  .header__row { grid-template-columns: minmax(0, 1fr) auto; }
  .header__nav { display: none; }
}

/* Guestbook */
.guestbook { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); border-bottom: 1px solid var(--ink); }
.gb-form { padding: 32px var(--gutter); border-inline-end: 1px solid var(--ink); display: flex; flex-direction: column; gap: 20px; }
.gb-form h2 { margin: 0; font-weight: 300; font-size: 33px; line-height: 1.15; letter-spacing: -.02em; }
.gb-form p { margin: 0; max-width: 44ch; }
.gb-field { display: flex; flex-direction: column; gap: 6px; border-bottom: 1px solid var(--ink); padding-bottom: 6px; }
.gb-field input, .gb-field textarea {
  border: 0; background: transparent; font: inherit; font-size: 17px; color: var(--ink); outline: none; resize: vertical; padding: 0;
}
.gb-field:focus-within { border-bottom-color: var(--accent); }
.gb-list { list-style: none; margin: 0; padding: 32px var(--gutter); display: flex; flex-direction: column; max-height: 640px; overflow-y: auto; }
.gb-list li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 16px; padding: 14px 0; border-bottom: 1px solid var(--ink); }
.gb-list li:first-child { padding-top: 0; }
.gb-name { font-weight: 500; }
.gb-date { font-family: var(--mono); font-size: 12px; }
.gb-msg { grid-column: 1 / -1; margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.gb-empty { color: var(--ink); opacity: .6; }