:root {
  --bg: #14171c;
  --surface: #1b1f26;
  --surface-2: #20242d;
  --border: #2b303b;
  --border-strong: #3c4353;
  --text: #e9e6df;
  --text-muted: #99a1b0;
  --text-faint: #626a7a;
  --accent: #d4a15a;
  --accent-strong: #eab873;
  --accent-soft: rgba(212, 161, 90, 0.14);
  --teal: #5fa79f;
  --danger: #d9806f;

  --font-display: 'Fraunces', 'Iowan Old Style', serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --radius-s: 3px;
  --radius-m: 6px;
  --content-width: 1080px;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(212,161,90,0.07), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 0%, rgba(95,167,159,0.05), transparent 55%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.frame {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 28px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

button, input, select, textarea { font-family: inherit; color: inherit; }

::selection { background: var(--accent-soft); color: var(--accent-strong); }

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--text);
}

.wordmark-mark {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-s);
}

.site-nav { display: flex; flex-wrap: wrap; gap: 4px 6px; }

.site-nav a {
  font-size: 0.86rem;
  text-decoration: none;
  color: var(--text-muted);
  padding: 7px 11px;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  font-family: var(--font-mono);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.site-nav a:hover { color: var(--text); border-color: var(--border-strong); }

.site-nav a.is-active {
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-color: rgba(212,161,90,0.35);
}

.site-footer { margin-top: auto; padding: 30px 0 40px; border-top: 1px solid var(--border); text-align: center; }
.site-footer p { color: var(--text-faint); font-size: 0.82rem; font-family: var(--font-mono); }

main { flex: 1; }

.hero { padding: 64px 0 44px; max-width: 700px; }
.hero h1 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); line-height: 1.18; }
.hero-lede { margin-top: 18px; color: var(--text-muted); font-size: 1.02rem; max-width: 54ch; }

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  padding-bottom: 72px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 22px 22px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.16s ease, transform 0.16s ease, background 0.16s ease;
}

.tool-card:hover { border-color: var(--border-strong); background: var(--surface-2); transform: translateY(-2px); }

.tool-card-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  border: 1px solid rgba(212,161,90,0.3);
  background: var(--accent-soft);
  padding: 3px 8px;
  border-radius: var(--radius-s);
  align-self: flex-start;
}

.tool-card h2 { font-size: 1.2rem; }
.tool-card p { color: var(--text-muted); font-size: 0.92rem; }
.tool-card-cta { margin-top: auto; padding-top: 6px; font-size: 0.86rem; color: var(--text-faint); }
.tool-card:hover .tool-card-cta { color: var(--accent-strong); }

.tool-header { padding: 44px 0 30px; max-width: 760px; }

.tool-back {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  text-decoration: none;
  margin-bottom: 18px;
}
.tool-back:hover { color: var(--text-muted); }

.tool-header-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  display: inline-block;
  margin-bottom: 14px;
}

.tool-header h1 { font-size: clamp(1.6rem, 3vw, 2.15rem); line-height: 1.2; }
.tool-header p { margin-top: 14px; color: var(--text-muted); max-width: 60ch; }

.workspace { padding-bottom: 80px; }

.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  overflow: hidden;
}

@media (max-width: 780px) { .panes { grid-template-columns: 1fr; } }

.pane { background: var(--surface); display: flex; flex-direction: column; min-height: 420px; }

.pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
  flex-wrap: wrap;
}

.pane-head-label { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); }

.pane-body { flex: 1; display: flex; flex-direction: column; position: relative; }

textarea.raw-input, .rendered-output {
  flex: 1;
  width: 100%;
  border: none;
  background: transparent;
  color: var(--text);
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.6;
  resize: none;
}

textarea.raw-input:focus { outline: none; }

.rendered-output { overflow: auto; font-family: var(--font-body); }
.rendered-output h1, .rendered-output h2, .rendered-output h3 { margin: 0.6em 0 0.35em; }
.rendered-output p { margin: 0.6em 0; }
.rendered-output ul, .rendered-output ol { margin: 0.6em 0; padding-left: 1.4em; }
.rendered-output code {
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.88em;
}
.rendered-output pre {
  background: var(--surface-2);
  padding: 12px 14px;
  border-radius: var(--radius-s);
  overflow: auto;
  border: 1px solid var(--border);
}
.rendered-output pre code { background: none; padding: 0; }
.rendered-output blockquote {
  border-left: 2px solid var(--accent);
  margin: 0.6em 0;
  padding-left: 1em;
  color: var(--text-muted);
}
.rendered-output a { color: var(--accent-strong); }
.rendered-output table { border-collapse: collapse; margin: 0.6em 0; }
.rendered-output th, .rendered-output td { border: 1px solid var(--border); padding: 5px 10px; font-size: 0.9em; }
.rendered-output img { max-width: 100%; }

.btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  padding: 7px 13px;
  border-radius: var(--radius-s);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.btn:hover { border-color: var(--accent); color: var(--accent-strong); }

.btn.is-primary { background: var(--accent-soft); border-color: rgba(212,161,90,0.45); color: var(--accent-strong); }
.btn.is-primary:hover { background: rgba(212,161,90,0.22); }
.btn.is-small { padding: 5px 10px; font-size: 0.74rem; }

.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

.select, .text-input, .number-input {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 7px 10px;
  border-radius: var(--radius-s);
}

.select:focus, .text-input:focus, .number-input:focus { outline: none; border-color: var(--accent); }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-faint); }

.tool-block { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-m); padding: 28px; }
.tool-block + .tool-block { margin-top: 16px; }

.control-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 20px; }

.dropzone {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-m);
  padding: 46px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.92rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.dropzone.is-dragover, .dropzone:hover { border-color: var(--accent); background: var(--accent-soft); }
.dropzone input[type="file"] { display: none; }

.ascii-output {
  background: #0f1115;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  padding: 14px;
  overflow: auto;
  white-space: pre;
  font-family: var(--font-mono);
  line-height: 1;
  color: #d7d3c8;
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .two-col { grid-template-columns: 1fr; } }

.qr-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f1115;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  min-height: 280px;
  padding: 20px;
}

.qr-preview canvas { image-rendering: pixelated; max-width: 100%; }

.result-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  padding: 12px 16px;
}

.result-line + .result-line { margin-top: 10px; }
.result-line-value { font-family: var(--font-mono); font-size: 1.02rem; color: var(--accent-strong); word-break: break-all; }
.result-line-label { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-faint); min-width: 90px; }

.hint { font-size: 0.85rem; color: var(--text-faint); margin-top: 14px; }

.rem-big { font-family: var(--font-mono); font-size: 2.4rem; color: var(--accent-strong); }
.rem-big span { font-size: 1.1rem; color: var(--text-faint); margin-left: 8px; }

@media (max-width: 600px) {
  .frame { padding: 0 18px; }
  .site-header { padding: 20px 0; }
  .tool-block { padding: 20px; }
}

.site-footer hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

.site-footer .footer-divider {
  max-width: 300px;
  margin-left: auto;
  margin-right: auto;
}

.footer-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 14px 0;
}

.footer-badge p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.inline-icon {
    width: 1rem;
    height: 1rem;
    display: inline-block;
}

.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-footer a:hover { color: var(--accent-strong); }

.hidden-link {
  color: var(--accent);
  font-weight: 600;
}

.site-footer p span {
  color: var(--text-faint);
  padding: 0 4px;
}