/* ===========================================================
   Vesper Type Foundry — design tokens
   =========================================================== */
:root{
  --paper: #f4f4f0;
  --paper-dim: #eae9e2;
  --paper-line: #e2e1d8;
  --ink: #101010;
  --ink-70: rgba(16,16,16,.7);
  --ink-55: rgba(16,16,16,.65);
  --ink-35: rgba(16,16,16,.6);
  --ink-14: rgba(16,16,16,.14);
  --accent: #ff4b1f;
  --accent-ink: #fff4f0;
  --accent-text: #bf3817; /* AA-safe accent for small text on paper */

  --mono: "Red Hat Mono", ui-monospace, "SF Mono", Consolas, monospace;
  --serif-fraunces: "Fraunces", ui-serif, Georgia, serif;
  --sans-flex: "Roboto Flex", ui-sans-serif, Arial, sans-serif;
  --serif-news: "Newsreader", ui-serif, Georgia, serif;

  --fs-body: clamp(1rem, 0.94rem + 0.24vw, 1.125rem);
  --fs-small: 0.8125rem;
  --fs-eyebrow: 0.75rem;
  --fs-h2: clamp(1.9rem, 1.4rem + 2.1vw, 3.1rem);
  --fs-cardname: clamp(1.8rem, 1.5rem + 1.2vw, 2.6rem);

  --measure: 62ch;
  --edge: clamp(1.25rem, 1rem + 2.4vw, 4rem);
  --rule: 1px solid var(--ink-14);

  --ease: cubic-bezier(.22,.8,.28,1);
}

*{ box-sizing: border-box; }
html{ background: var(--paper); }
body{
  margin: 0;
  background-color: var(--paper);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
  color: var(--ink);
  font-family: var(--serif-news);
  font-size: var(--fs-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img,svg{ display:block; max-width:100%; }

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

.skip-link{
  position:absolute; left:1rem; top:-3rem;
  background:var(--ink); color:var(--paper);
  padding:.6rem 1rem; font-family:var(--mono); font-size:var(--fs-small);
  z-index:200; transition: top .2s var(--ease);
}
.skip-link:focus{ top:1rem; }

a{ color: inherit; }

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

/* ===========================================================
   Header
   =========================================================== */
.site-head{
  display:flex; flex-wrap:wrap; align-items:baseline; justify-content:space-between;
  gap: .75rem 2rem;
  padding: 1.4rem var(--edge) 1.1rem;
  border-bottom: var(--rule);
}
.site-head__mark{ display:flex; flex-direction:column; gap:.15rem; }
.wordmark{
  font-family: var(--serif-fraunces);
  font-variation-settings: "opsz" 40, "wght" 560, "SOFT" 0, "WONK" 1;
  font-size: 1.7rem;
  letter-spacing: -0.01em;
}
.site-head__sub{
  font-family: var(--mono);
  font-size: var(--fs-small);
  color: var(--ink-55);
  letter-spacing: .01em;
}
.site-head__nav{
  display:flex; flex-wrap:wrap; gap: 1.25rem 1.5rem;
  font-family: var(--mono);
  font-size: var(--fs-small);
  align-self:center;
}
.site-head__nav a{
  text-decoration:none;
  text-transform: uppercase;
  letter-spacing: .06em;
  position:relative;
  padding-bottom: .2rem;
}
.site-head__nav a::after{
  content:"";
  position:absolute; left:0; right:100%; bottom:0; height:2px;
  background: var(--accent);
  transition: right .25s var(--ease);
}
.site-head__nav a:hover::after,
.site-head__nav a:focus-visible::after{ right:0; }

/* ===========================================================
   Shared section rhythm
   =========================================================== */
section{ padding: clamp(3rem, 2rem + 5vw, 6.5rem) var(--edge); }
.eyebrow{
  font-family: var(--mono);
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent-text);
  margin: 0 0 .9rem;
}
.proximity .eyebrow{ color: var(--accent); } /* bright accent reads AA on the dark ink bg here */

/* ===========================================================
   Playground
   =========================================================== */
.playground{ border-bottom: var(--rule); }
.playground__intro{ max-width: var(--measure); margin-bottom: clamp(2rem,1.5rem + 2vw,3.5rem); }
.playground__title{
  font-family: var(--serif-fraunces);
  font-variation-settings: "opsz" 90, "wght" 380, "SOFT" 15, "WONK" 0;
  font-size: clamp(2.4rem, 1.9rem + 3vw, 4.4rem);
  line-height: 1.02;
  margin: 0 0 1.1rem;
  letter-spacing: -0.01em;
}
.playground__deck{
  max-width: 58ch;
  color: var(--ink-70);
  font-size: clamp(1rem, .95rem + .3vw, 1.2rem);
  margin: 0;
}

.playground__stage{
  display:grid;
  grid-template-columns: 1fr 320px;
  gap: clamp(1.5rem, 1rem + 2vw, 3.5rem);
  align-items: start;
}

.playground__canvas{ min-width:0; }

.family-switch{
  display:inline-flex; gap: .4rem; margin-bottom: 1.6rem;
  font-family: var(--mono); font-size: var(--fs-small);
}
.family-switch__btn{
  appearance:none; border: 1px solid var(--ink-14); background: transparent;
  color: var(--ink-55);
  padding: .5rem .9rem;
  cursor:pointer;
  text-transform: uppercase; letter-spacing:.04em;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.family-switch__btn:hover{ border-color: var(--ink-35); color: var(--ink); }
.family-switch__btn.is-active{
  background: var(--ink); border-color: var(--ink); color: var(--paper);
}

.specimen-headline{
  font-family: var(--serif-fraunces);
  font-size: clamp(2.6rem, 1.6rem + 8vw, 8.5rem);
  line-height: 1;
  letter-spacing: -0.015em;
  min-height: 1.2em;
  outline: none;
  word-break: break-word;
  border-bottom: 2px solid transparent;
  transition: border-color .2s var(--ease);
  padding-bottom: .1em;
}
.specimen-headline:focus{ border-color: var(--accent); }
.specimen-headline:empty::before{
  content: attr(data-placeholder);
  color: var(--ink-35);
}
.playground__hint{
  font-family: var(--mono); font-size: var(--fs-small);
  color: var(--ink-55); margin: 1.1rem 0 0;
}
.playground__code{
  font-family: var(--mono); font-size: var(--fs-small);
  color: var(--ink-35); margin: 2.2rem 0 0;
  padding-top: 1.4rem; border-top: var(--rule);
  max-width: 46ch;
}

/* Sticky axis panel — the signature control surface */
.axis-panel{
  position: sticky;
  top: 1.5rem;
  align-self: start;
  background: var(--ink);
  color: var(--paper);
  padding: 1.4rem 1.3rem 1.6rem;
  display:flex; flex-direction:column; gap:1.1rem;
}
.axis-panel__head{
  display:flex; justify-content:space-between; align-items:baseline;
  font-family: var(--mono); font-size: var(--fs-small);
  border-bottom: 1px solid rgba(244,244,240,.2);
  padding-bottom: .8rem;
}
.axis-panel__label{ text-transform: uppercase; letter-spacing:.08em; color: rgba(244,244,240,.55); }
.axis-panel__family{ color: var(--accent); font-weight: 700; }

.axis-panel__list{ display:flex; flex-direction:column; gap: 1rem; }
.axis-row{ display:flex; flex-direction:column; gap:.4rem; }
.axis-row__top{
  display:flex; justify-content:space-between;
  font-family: var(--mono); font-size: var(--fs-small);
}
.axis-row__name{ text-transform: uppercase; letter-spacing:.06em; color: rgba(244,244,240,.75); }
.axis-row__value{ color: var(--accent); font-variant-numeric: tabular-nums; }
.axis-row__range{
  font-family: var(--mono); font-size: 0.7rem; color: rgba(244,244,240,.4);
}

.axis-row input[type="range"]{
  -webkit-appearance:none; appearance:none;
  width:100%; height: 2px;
  background: rgba(244,244,240,.28);
  outline: none;
  cursor: pointer;
}
.axis-row input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none; appearance:none;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--ink);
  margin-top: -6px;
}
.axis-row input[type="range"]::-moz-range-thumb{
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--ink);
}
.axis-row input[type="range"]::-webkit-slider-runnable-track{ height:2px; background: rgba(244,244,240,.28); }
.axis-row input[type="range"]:focus-visible{ outline: 2px solid var(--accent); outline-offset: 4px; }

.axis-panel__reset{
  appearance:none; background:transparent; border: 1px solid rgba(244,244,240,.35);
  color: var(--paper); font-family: var(--mono); font-size: var(--fs-small);
  text-transform: uppercase; letter-spacing:.06em;
  padding: .6rem .8rem; cursor:pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.axis-panel__reset:hover{ border-color: var(--accent); background: rgba(255,75,31,.12); }

.axis-panel__note{
  font-family: var(--mono); font-size: 0.72rem; line-height:1.6;
  color: rgba(244,244,240,.55);
  margin:0; padding-top: .8rem; border-top: 1px solid rgba(244,244,240,.2);
}
.axis-panel__note strong{ color: rgba(244,244,240,.85); }

/* ===========================================================
   Proximity
   =========================================================== */
.proximity{
  background: var(--ink);
  color: var(--paper);
  border-bottom: var(--rule);
}
.proximity__stage{
  min-height: clamp(220px, 32vw, 380px);
  display:flex; align-items:center; justify-content:center;
  text-align:center;
  cursor: default;
  padding: 1rem 0;
}
.proximity__line{
  font-family: var(--sans-flex);
  font-variation-settings: "wght" 300, "wdth" 80, "opsz" 96;
  font-size: clamp(2rem, 1.1rem + 6.5vw, 6.2rem);
  line-height: 1.03;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin:0;
}
.proximity__line .letter{ display:inline-block; will-change: font-variation-settings; }
.proximity__caption{
  max-width: var(--measure);
  margin: 2rem auto 0;
  text-align:center;
  color: rgba(244,244,240,.6);
  font-size: var(--fs-small);
  font-family: var(--mono);
  line-height:1.7;
}

/* ===========================================================
   Waterfall
   =========================================================== */
.waterfall{ border-bottom: var(--rule); }
.waterfall__stage{
  display:flex; flex-direction:column;
  gap: 0.15em;
  padding: 1rem 0 2.5rem;
  overflow: hidden;
}
.waterfall__row{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  white-space: nowrap;
  line-height: 1.05;
  cursor: default;
}
.waterfall__word{
  font-family: var(--serif-fraunces);
  letter-spacing: -0.01em;
  color: var(--ink);
  transition: color .2s var(--ease);
}
.waterfall__readout{
  flex: none;
  font-family: var(--mono);
  font-size: var(--fs-small);
  font-variant-numeric: tabular-nums;
  color: var(--ink-35);
  transition: color .2s var(--ease);
}
.waterfall__row:hover .waterfall__word,
.waterfall__row:hover .waterfall__readout{
  color: var(--accent-text);
}
@media (max-width: 900px){
  .waterfall__readout{ display: none; }
}
.waterfall__caption{
  max-width: var(--measure);
  color: var(--ink-55);
  font-family: var(--mono);
  font-size: var(--fs-small);
  line-height:1.7;
  margin:0;
}

/* ===========================================================
   Specimens
   =========================================================== */
.specimens{ border-bottom: var(--rule); }
.specimens__title{
  max-width: 34ch;
  font-family: var(--serif-fraunces);
  font-variation-settings: "opsz" 60, "wght" 420, "SOFT" 10, "WONK" 0;
  font-size: var(--fs-h2);
  line-height: 1.08;
  margin: 0 0 clamp(2.5rem, 2rem + 2vw, 4rem);
}

.specimen-card{
  padding: clamp(2rem, 1.5rem + 2vw, 3.2rem) 0;
  border-top: var(--rule);
  display:grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.5rem 3rem;
}
.specimen-card:last-of-type{ border-bottom: var(--rule); }

.specimen-card__head{ grid-column: 1 / -1; display:flex; align-items:baseline; gap:1rem; flex-wrap:wrap; }
.specimen-card__name{
  font-family: var(--serif-fraunces);
  font-variation-settings: "opsz" 90, "wght" 480, "SOFT" 0, "WONK" 0;
  font-size: var(--fs-cardname);
  margin:0;
}
.specimen-card__tag{
  font-family: var(--mono); font-size: var(--fs-small);
  color: var(--ink-55); margin:0;
  text-transform: uppercase; letter-spacing:.03em;
}

.specimen-card__desc{
  max-width: 46ch; color: var(--ink-70); margin:0;
}

.specimen-card__grid{
  display:grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
  background: var(--ink-14);
  border: 1px solid var(--ink-14);
  align-self:start;
}
.glyph{
  background: var(--paper);
  display:flex; align-items:center; justify-content:center;
  aspect-ratio: 1;
  font-size: clamp(1.1rem, 1rem + .6vw, 1.6rem);
  cursor: default;
  transition: background .15s var(--ease), color .15s var(--ease), transform .15s var(--ease);
}
#card-fraunces .glyph{ font-family: var(--serif-fraunces); font-variation-settings: "opsz" 30, "wght" 460, "SOFT" 0, "WONK" 0; }
#card-robotoflex .glyph{ font-family: var(--sans-flex); font-variation-settings: "wght" 460, "wdth" 100, "opsz" 40; }
#card-newsreader .glyph{ font-family: var(--serif-news); font-variation-settings: "opsz" 30, "wght" 460; }
.glyph:hover, .glyph:focus-visible{
  background: var(--ink); color: var(--accent); transform: scale(1.08);
  z-index:1; position:relative;
}

.specimen-card__try{
  grid-column: 1 / -1;
  display:grid; grid-template-columns: 1fr auto; gap: .8rem 1.5rem;
  align-items:end;
  padding-top: .5rem;
}
.try-field{ display:flex; flex-direction:column; min-width:0; }
.try-weight{ display:flex; flex-direction:column; min-width:140px; }
.try-label, .try-slider-label{
  display:block; font-family: var(--mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing:.08em; color: var(--ink-55);
  margin-bottom: .4rem;
}
.try-slider-label output{ color: var(--accent-text); font-variant-numeric: tabular-nums; }
.try-input{
  width:100%;
  font-size: clamp(1.15rem, 1rem + 1vw, 1.6rem);
  border: none; border-bottom: 1px solid var(--ink-14);
  background: transparent;
  padding: .3rem 0;
  color: var(--ink);
  transition: border-color .2s var(--ease);
}
#try-fraunces{ font-family: var(--serif-fraunces); font-variation-settings: "opsz" 40, "wght" 400, "SOFT" 0, "WONK" 0; }
#try-robotoflex{ font-family: var(--sans-flex); font-variation-settings: "wght" 400, "wdth" 100, "opsz" 40; }
#try-newsreader{ font-family: var(--serif-news); font-variation-settings: "opsz" 30, "wght" 400; }
.try-input:focus{ border-color: var(--accent); }
.try-slider{
  -webkit-appearance:none; appearance:none;
  width: 140px; height:2px; background: var(--ink-14);
  cursor:pointer;
}
.try-slider::-webkit-slider-thumb{
  -webkit-appearance:none; appearance:none;
  width:12px; height:12px; border-radius:50%;
  background: var(--accent); border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--ink-14);
  margin-top:-5px;
}
.try-slider::-moz-range-thumb{
  width:12px; height:12px; border-radius:50%;
  background: var(--accent); border: 2px solid var(--paper);
}
.try-slider:focus-visible{ outline: 2px solid var(--accent); outline-offset:4px; }

.specimen-card__hint{
  grid-column: 1 / -1;
  font-family: var(--mono); font-size: 0.72rem; line-height:1.7;
  color: var(--ink-35);
  margin: .5rem 0 0;
  max-width: 68ch;
}

/* ===========================================================
   Licensing
   =========================================================== */
.licensing__title{
  max-width: 40ch;
  font-family: var(--serif-fraunces);
  font-variation-settings: "opsz" 60, "wght" 420, "SOFT" 8, "WONK" 0;
  font-size: var(--fs-h2);
  line-height: 1.1;
  margin: 0 0 1.1rem;
}
.licensing__deck{
  max-width: var(--measure); color: var(--ink-70);
  margin: 0 0 clamp(2rem, 1.5rem + 2vw, 3rem);
}

.license-table-wrap{ position:relative; overflow-x:auto; margin-bottom: 1.6rem; }
.license-table{
  width:100%; border-collapse: collapse;
  min-width: 640px;
  font-size: 0.92rem;
}
.license-table th, .license-table td{
  text-align:left; padding: .9rem 1rem .9rem 0;
  border-bottom: var(--rule);
  vertical-align: top;
}
.license-table thead th{
  font-family: var(--mono); font-size: var(--fs-small);
  text-transform: uppercase; letter-spacing:.05em;
  color: var(--ink-55);
  border-bottom: 1px solid var(--ink);
  font-weight: 500;
}
.license-table tbody th{
  font-family: var(--serif-fraunces);
  font-variation-settings: "opsz" 20, "wght" 560, "SOFT" 0, "WONK" 0;
  font-size: 1.05rem;
  white-space: nowrap;
}
.license-table td:nth-child(3){ font-family: var(--mono); color: var(--accent-text); white-space:nowrap; }
.license-table td:nth-child(4){ font-family: var(--mono); font-size: var(--fs-small); color: var(--ink-55); white-space:nowrap; }
.license-table tbody tr:hover{ background: var(--paper-dim); }

.license-table-hint{
  display:none;
  font-family: var(--mono); font-size: var(--fs-small);
  color: var(--ink-35); margin: 0 0 .8rem;
}

.licensing__fine{
  max-width: var(--measure);
  font-family: var(--mono); font-size: var(--fs-small);
  color: var(--ink-55); line-height:1.7;
}
.licensing__fine a{ color: var(--ink); text-decoration-color: var(--ink-35); }
.licensing__fine a:hover{ color: var(--accent-text); text-decoration-color: var(--accent-text); }

/* ===========================================================
   Footer
   =========================================================== */
.site-foot{
  padding: 2.2rem var(--edge) 3rem;
  display:flex; flex-wrap:wrap; justify-content:space-between; gap: .8rem 2rem;
}
.site-foot__mark{
  font-family: var(--serif-fraunces);
  font-variation-settings: "opsz" 30, "wght" 500, "SOFT" 0, "WONK" 1;
  margin:0; font-size: 1rem;
}
.site-foot__meta{
  font-family: var(--mono); font-size: var(--fs-small);
  color: var(--ink-55); margin:0; max-width: 46ch;
}

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 900px){
  .playground__stage{ grid-template-columns: 1fr; }
  .axis-panel{ position: static; }
  .specimen-card{ grid-template-columns: 1fr; }
  .specimen-card__grid{ grid-template-columns: repeat(8, 1fr); }
}

@media (max-width: 640px){
  .site-head{ padding: 1.1rem 1.1rem 1rem; }
  .site-head__nav{ gap: 1.5rem 1rem; width:100%; }
  section{ padding-left: 1.1rem; padding-right: 1.1rem; }
  .family-switch{ flex-wrap: wrap; }
  .family-switch__btn{ white-space: nowrap; position: relative; }
  .axis-panel__reset{ position: relative; }
  /* expand tap area to 44px on touch without changing visible size */
  .site-head__nav a::before,
  .family-switch__btn::before,
  .axis-panel__reset::before{
    content:"";
    position:absolute; left:0; right:0; top:50%;
    height:44px; transform:translateY(-50%);
  }
  .specimen-card__grid{ grid-template-columns: repeat(6, 1fr); }
  .specimen-card__try{ grid-template-columns: 1fr; }
  .try-slider{ width: 100%; }
  .license-table{ min-width: 560px; }
  .license-table-wrap::after{
    content:"";
    position:absolute; top:0; right:0; bottom:0; width: 2.5rem;
    background: linear-gradient(to right, transparent, var(--paper));
    pointer-events:none;
  }
  .license-table-hint{ display:block; }
}

/* ===========================================================
   Reduced motion
   =========================================================== */
@media (prefers-reduced-motion: reduce){
  *{ transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}