:root{
  --ink:#000000;
  --forest:#2d3329;
  --deep:#161b13;
  --terrain:#84907f;
  --moss:#3b4736;
  --icy:#dde2e4;
  --trail:#e2ffcc;
  --paper:#f6f8f2;
  --white:#ffffff;
  --danger:#9d2f22;
  --border:#000000;
  --panel:#dde2e4;
  --muted:#4c5848;
  --action:var(--trail);
  --radius-xs:0;
  --radius-sm:0;
  --radius-md:0;
  --radius-lg:0;
  --radius-xl:0;
  --radius-pill:0;
  --line:2px solid var(--ink);
  --hairline:1px solid rgba(0,0,0,.42);
  --focus:0 0 0 3px rgba(226,255,204,.9),0 0 0 5px var(--ink);
  --font-sans:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --font-display:Georgia,"Times New Roman",serif;
}

*{box-sizing:border-box}

html{
  background:var(--terrain);
  color:var(--ink);
}

body{
  margin:0;
  min-width:320px;
  background:var(--terrain);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:15px;
  line-height:1.52;
}

[dir=rtl] body{
  text-align:right;
}

[dir=rtl] nav,[dir=rtl] header,[dir=rtl] footer,[dir=rtl] .controls,[dir=rtl] .flag-row,[dir=rtl] .palette-output{
  direction:rtl;
}

a{
  color:inherit;
  text-decoration:none;
}

a:hover{text-decoration:underline;text-underline-offset:3px}

header,footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:14px clamp(14px,3vw,40px);
  background:var(--forest);
  color:var(--trail);
  border-bottom:var(--line);
}

header{
  position:sticky;
  top:0;
  z-index:10;
}

header>a{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  max-width:480px;
  padding:10px 12px;
  border:var(--line);
  background:var(--trail);
  color:var(--ink);
  font-weight:800;
  line-height:1.1;
  text-transform:uppercase;
}

nav{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  gap:8px;
}

nav a,footer a,footer select,nav select{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:8px 11px;
  border:1px solid var(--trail);
  background:transparent;
  color:var(--trail);
  font-size:12px;
  font-weight:800;
  letter-spacing:.02em;
  text-transform:uppercase;
}

nav a:hover,footer a:hover{
  background:var(--trail);
  color:var(--ink);
  text-decoration:none;
}

.language-switcher{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin:0;
  color:var(--trail);
}

.language-switcher span{
  font-size:12px;
  font-weight:900;
  text-transform:uppercase;
}

.language-switcher select{
  width:auto;
  min-width:104px;
  background:var(--forest);
}

main{
  width:min(1240px,100%);
  margin:0 auto;
  padding:24px clamp(12px,2.8vw,36px) 58px;
}

.hero{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:18px;
  margin:0 0 18px;
  padding:clamp(26px,5vw,58px);
  border:var(--line);
  background:var(--trail);
  color:var(--ink);
}

.hero h1{
  margin:0;
  max-width:980px;
  color:var(--ink);
  font-family:var(--font-display);
  font-size:clamp(42px,7vw,84px);
  line-height:.9;
  font-weight:400;
  letter-spacing:0;
  text-transform:uppercase;
}

.hero p{
  max-width:900px;
  margin:0;
  color:var(--forest);
  font-size:16px;
  font-weight:700;
}

.tool-card{
  width:100%;
  max-width:none;
  margin:18px 0 20px;
  padding:clamp(18px,3vw,34px);
  border:var(--line);
  background:var(--icy);
  color:var(--ink);
}

.tool-grid{
  display:grid;
  grid-template-columns:minmax(0,1.02fr) minmax(310px,.98fr);
  gap:22px;
  align-items:start;
}

.tool-pane,.preview-pane,.qr-preview{min-width:0}

label{
  display:block;
  margin:13px 0 7px;
  color:var(--forest);
  font-size:12px;
  font-weight:900;
  letter-spacing:.02em;
  text-transform:uppercase;
}

textarea,input,select{
  width:100%;
  min-height:44px;
  padding:12px 13px;
  border:var(--line);
  border-radius:0;
  background:var(--paper);
  color:var(--ink);
  font:inherit;
  outline:0;
}

textarea{
  min-height:150px;
  resize:vertical;
}

textarea:focus,input:focus,select:focus{
  background:var(--white);
  box-shadow:var(--focus);
}

input[type=checkbox]{
  width:auto;
  min-height:0;
  box-shadow:none;
  accent-color:var(--forest);
}

input[type=color]{
  height:48px;
  padding:4px;
}

input[type=range]{
  padding:0;
  border:0;
  box-shadow:none;
  accent-color:var(--forest);
}

.controls{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:18px 0 8px;
}

button{
  min-height:46px;
  max-width:100%;
  margin:0;
  padding:12px 16px;
  border:var(--line);
  border-radius:0;
  background:var(--forest);
  color:var(--trail);
  font:inherit;
  font-weight:900;
  cursor:pointer;
  text-transform:uppercase;
}

.controls button:first-child,
#image-process,
#pdf-run,
#subtitle-run,
#regex-run,
#qr-generate,
#run-tool,
#contrast-swap{
  background:var(--trail);
  color:var(--ink);
}

button:hover{background:var(--ink);color:var(--trail)}
button:active{transform:translateY(1px)}
button:disabled{opacity:.45;cursor:not-allowed}

output,.result-panel,.match-output{
  display:block;
  width:100%;
  margin-top:12px;
  padding:15px;
  border:var(--line);
  background:var(--paper);
  color:var(--ink);
  white-space:pre-wrap;
  overflow:auto;
}

.result-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
}

.result-grid div{
  min-width:0;
  padding:15px;
  border:var(--line);
  background:var(--paper);
}

.result-grid strong{
  display:block;
  color:var(--ink);
  font-family:var(--font-display);
  font-size:28px;
  line-height:.95;
  font-weight:400;
}

.result-grid span,.small-note{
  display:block;
  margin-top:5px;
  color:var(--muted);
  font-size:12px;
  font-weight:800;
}

.two-col{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
}

.flag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:10px 0 14px;
}

.flag-row label{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:36px;
  margin:0;
  padding:7px 10px;
  border:var(--line);
  background:var(--paper);
  color:var(--ink);
  font-weight:900;
}

.regex-input{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto 84px;
  align-items:center;
  overflow:hidden;
  border:var(--line);
  background:var(--paper);
}

.regex-input input{
  border:0;
  border-radius:0;
  background:transparent;
  box-shadow:none;
}

.regex-input span{
  padding:0 10px;
  color:var(--forest);
  font-weight:900;
}

.match-output mark{
  background:var(--trail);
  color:var(--ink);
  padding:1px 3px;
}

.cheat-sheet{margin-top:14px}
.cheat-sheet summary{cursor:pointer;font-weight:900;color:var(--forest)}

.qr-preview,.preview-pane{
  display:grid;
  place-items:center;
  align-content:start;
  gap:16px;
  min-height:100%;
  padding:18px;
  border:var(--line);
  background:var(--terrain);
}

#image-canvas,#qr-canvas{
  max-width:100%;
  height:auto;
  border:var(--line);
  background:var(--white);
}

.contrast-preview{
  margin:14px 0;
  padding:28px;
  border:var(--line);
  font-family:var(--font-display);
  font-size:24px;
  font-weight:400;
}

.palette-output{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:12px;
}

.swatch{
  width:128px;
  min-height:0;
  padding:0;
  overflow:hidden;
  border:var(--line);
  background:var(--paper);
  color:var(--ink);
}

.swatch b{display:block;height:62px}
.swatch span{display:block;padding:9px;font-family:var(--font-sans);font-size:12px}

.badge{
  margin:18px 0;
  padding:14px 16px;
  border:var(--line);
  background:var(--forest);
  color:var(--trail);
  font-weight:900;
}

main>section:not(.hero):not(.tool-card):not(.badge){
  margin:18px 0;
  padding:22px clamp(18px,2.5vw,28px);
  border:var(--line);
  background:var(--paper);
}

h2,h3{
  margin:0 0 10px;
  color:var(--ink);
  line-height:1.08;
}

h2{
  font-family:var(--font-display);
  font-size:clamp(28px,4vw,48px);
  font-weight:400;
}

h3{
  font-size:13px;
  font-weight:900;
  text-transform:uppercase;
}

p{margin:0 0 10px}

details{
  padding:12px 0;
  border-top:var(--hairline);
}

details:first-of-type{border-top:0}
summary{cursor:pointer;color:var(--forest);font-weight:900}

.ad-slot{
  margin:28px 0;
  padding:20px;
  border:2px dashed var(--ink);
  background:transparent;
  color:var(--forest);
  text-align:center;
  font-size:12px;
  font-weight:900;
  text-transform:uppercase;
}

table{
  width:100%;
  border-collapse:collapse;
}

td,th{
  padding:9px 8px;
  border-top:var(--hairline);
  text-align:left;
}

footer{
  border-top:var(--line);
  border-bottom:0;
}

footer select{
  width:auto;
  min-height:38px;
  padding-right:34px;
  background:var(--forest);
  color:var(--trail);
}

.category-image .hero,.category-pdf .hero{background:var(--icy)}
.category-seo .hero{background:var(--trail)}
.category-public-source .hero{background:var(--forest);color:var(--trail)}
.category-public-source .hero h1,.category-public-source .hero p{color:var(--trail)}
.category-design .hero{background:var(--paper)}

@media(max-width:860px){
  header,footer{align-items:flex-start;flex-direction:column}
  nav{justify-content:flex-start}
  .tool-grid,.two-col{grid-template-columns:1fr}
  .result-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(max-width:540px){
  main{padding:16px 10px 38px}
  header,footer{padding:12px}
  header>a{max-width:100%}
  nav a,footer a,footer select{min-height:36px;padding:7px 9px}
  .hero,.tool-card,main>section:not(.hero):not(.tool-card):not(.badge){padding:17px}
  .hero h1{font-size:38px}
  .hero p{font-size:14px}
  .result-grid{grid-template-columns:1fr}
  .controls{display:grid;grid-template-columns:1fr}
  button{width:100%}
  .regex-input{grid-template-columns:auto minmax(0,1fr) auto 62px}
}