/* ==========================================================
   TOKENS
   ========================================================== */
:root{
  --paper: #EDEBE2;
  --paper-raised: #F6F4EC;
  --ink: #211F1A;
  --ink-soft: #5B584E;
  --line: #C9C4B5;
  --line-strong: #A9A392;
  --red: #B23A2E;      /* tape-measure red */
  --red-ink: #7C2820;
  --blue: #2E4B63;     /* chalk blue */
  --blue-ink: #1E323F;
  --focus: #1E6FEB;
  --radius: 2px;
  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
  --maxw: 760px;
}

html[lang="zh-CN"]{
  --font-display: "Noto Sans SC", "Oswald", sans-serif;
  --font-body: "Noto Sans SC", "Inter", system-ui, sans-serif;
}

*{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; }
body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; }
button, select, input{ font-family: inherit; }
a{ color: var(--blue-ink); }
:focus-visible{ outline: 3px solid var(--focus); outline-offset: 2px; }

.wrap{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================================
   HEADER
   ========================================================== */
header.site-head{
  padding: 22px 0 16px;
}
.head-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}
.logo{
  display:flex;
  align-items:baseline;
  gap:8px;
  text-decoration:none;
  color: var(--ink);
}
.logo-icon{
  display:block;
  width: 32px;
  height: 32px;
  border-radius: 7px;
  flex-shrink: 0;
}
.logo-word{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 21px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.lang-switch{
  display:flex;
  gap:2px;
  flex-wrap: wrap;
  justify-content:flex-end;
}
.lang-switch button{
  background: none;
  border: 1px solid transparent;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  padding: 5px 8px;
  cursor: pointer;
  border-radius: var(--radius);
  text-transform: uppercase;
}
.lang-switch button:hover{ color: var(--ink); }
.lang-switch button[aria-pressed="true"]{
  color: var(--paper);
  background: var(--ink);
}

/* ruler-tick divider — signature motif */
.ruler-divider{
  height: 14px;
  margin: 4px 0 0;
  background-image: repeating-linear-gradient(
    to right,
    var(--line-strong) 0, var(--line-strong) 1px,
    transparent 1px, transparent 8px
  );
  background-position: bottom left;
  background-size: 100% 8px;
  background-repeat: repeat-x;
  border-bottom: 1px solid var(--line-strong);
}

/* ==========================================================
   HERO
   ========================================================== */
.hero{ padding: 34px 0 6px; }
.hero h1{
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  font-size: clamp(30px, 7vw, 44px);
  line-height: 1.02;
  letter-spacing: 0.005em;
  margin: 0 0 12px;
}
.hero h1::after{ content:"."; color: var(--red); }
.hero p.tagline{
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 26px;
}

/* segmented mode control */
.mode-switch{
  display:flex;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 22px;
}
.mode-switch button{
  flex:1;
  background: var(--paper-raised);
  border: none;
  border-right: 1px solid var(--ink);
  padding: 13px 10px;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--ink);
  cursor: pointer;
}
.mode-switch button:last-child{ border-right:none; }
.mode-switch button[aria-pressed="true"]{
  background: var(--ink);
  color: var(--paper);
}

/* ==========================================================
   FORM CARD
   ========================================================== */
.panel{
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 26px;
}
.field{ margin-bottom: 16px; }
.field:last-of-type{ margin-bottom: 0; }
.field label{
  display:block;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.field .help{
  font-size: 12.5px;
  color: var(--ink-soft);
  margin-top: 5px;
}
select, input[type="number"]{
  width: 100%;
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 11px 12px;
  font-size: 16px;
  color: var(--ink);
  font-family: var(--font-mono);
}
select:focus, input:focus{ border-color: var(--ink); }

.btn-primary{
  width:100%;
  background: var(--red);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 14px 16px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 15px;
  cursor: pointer;
  margin-top: 4px;
}
.btn-primary:hover{ background: var(--red-ink); }
.btn-secondary{
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
}
.btn-secondary:hover{ border-color: var(--ink); }

.two-col{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 420px){
  .two-col{ grid-template-columns: 1fr; }
}

/* ==========================================================
   AD SLOTS
   ========================================================== */
.ad-slot{
  margin: 24px 0;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  min-height: 100px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: repeating-linear-gradient(
    45deg, var(--paper-raised), var(--paper-raised) 10px,
    var(--paper) 10px, var(--paper) 20px
  );
}
.ad-slot .ad-label{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ==========================================================
   RESULTS — stitched "size tag" cards (signature element)
   ========================================================== */
.results{ margin-top: 4px; }
.results-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 10px;
  margin-bottom: 4px;
}
.results h2{
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 20px;
  letter-spacing: 0.02em;
  margin: 18px 0 2px;
}
.results-sub{
  color: var(--ink-soft);
  font-size: 14px;
  margin: 0 0 16px;
}
.badge-approx{
  display:inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--red-ink);
  background: #F1DAD5;
  border-radius: var(--radius);
  padding: 2px 7px;
  margin-left: 8px;
  vertical-align: middle;
}

.tag-grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(122px, 1fr));
  gap: 12px;
}
.tag{
  position:relative;
  background: var(--paper-raised);
  border: 1px solid var(--ink);
  border-radius: 3px;
  padding: 14px 10px 12px;
  text-align:center;
}
.tag::before{
  /* stitched border, evokes a woven clothing label */
  content:"";
  position:absolute;
  inset: 4px;
  border: 1px dashed var(--line-strong);
  border-radius: 2px;
  pointer-events:none;
}
.tag .tag-region{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.tag .tag-size{
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 22px;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.tag.is-origin{
  border-color: var(--red);
  background: #F6ECEA;
}
.tag.is-origin .tag-region{ color: var(--red-ink); }

.disclaimer{
  margin-top: 20px;
  font-size: 12.5px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.reset-row{ margin-top: 18px; }

/* ==========================================================
   LEGAL / CONTENT PAGES (Sobre, Privacidade, Contato)
   ========================================================== */
.legal-page{
  padding: 30px 0 10px;
  max-width: 640px;
}
.legal-page h1{
  font-family: var(--font-display);
  text-transform: uppercase;
  font-weight: 600;
  font-size: clamp(26px, 6vw, 34px);
  margin: 0 0 22px;
}
#page-content h2{
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: 16px;
  color: var(--ink);
  margin: 26px 0 8px;
}
#page-content p{
  margin: 0 0 14px;
  color: var(--ink);
}
#page-content code{
  font-family: var(--font-mono);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  padding: 1px 5px;
  border-radius: 2px;
  font-size: 0.9em;
}
#page-content a{ text-decoration: underline; }
.contact-email a{
  font-family: var(--font-mono);
  font-size: 19px;
  color: var(--red-ink);
  text-decoration: none;
  border-bottom: 2px solid var(--red);
}
.back-row{ margin: 28px 0 8px; }
.back-row a{
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  color: var(--ink-soft);
}
.back-row a:hover{ color: var(--ink); }

/* ==========================================================
   FOOTER
   ========================================================== */
footer{
  margin-top: 48px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--line-strong);
}
.footer-links{
  display:flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12.5px;
  margin-bottom: 14px;
}
.footer-links a{ text-decoration:none; }
.footer-links a:hover{ text-decoration:underline; }
footer .rights{
  color: var(--ink-soft);
  font-size: 12.5px;
  max-width: 52ch;
}

.hidden{ display:none !important; }

/* reduced motion / no unnecessary motion by default */
@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}