/* SafeMerge — one stylesheet for every page.
   Layout: a narrow working column per tool; a card grid on the home page.
   System fonts on purpose: no font requests leave the visitor's browser. */
:root {
  --paper: #f5f7f6;
  --surface: #ffffff;
  --ink: #13201d;
  --muted: #5b6b67;
  --line: #d9e1de;
  --accent: #0b7a6c;
  --accent-ink: #ffffff;
  --accent-soft: #e2f2ee;
  --danger: #b4372f;
  --ok: #1d7f4e;
  --shadow: 0 1px 2px rgba(19, 32, 29, .06), 0 4px 16px rgba(19, 32, 29, .05);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1615;
    --surface: #18211f;
    --ink: #e9f0ee;
    --muted: #93a39f;
    --line: #2c3936;
    --accent: #3cc2ae;
    --accent-ink: #062320;
    --accent-soft: #15302b;
    --danger: #ff7b70;
    --ok: #4fd08f;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.55 var(--font);
  display: flex; flex-direction: column; min-height: 100vh;
}
a { color: var(--accent); }
img, canvas { max-width: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.wrap {
  width: 100%; max-width: 1040px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.wrap.narrow { max-width: 760px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; gap: 16px; padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.brand svg { width: 30px; height: 30px; flex: none; }
.site-nav { margin-left: auto; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.site-nav a { text-decoration: none; color: var(--muted); font-size: 15px; padding: 6px 10px; border-radius: 8px; }
.site-nav a:hover { color: var(--ink); background: var(--paper); }
.site-nav a.donate { color: var(--accent); border: 1px solid var(--accent); }

/* Page head */
main { flex: 1; padding-block: 32px 56px; }
h1 { font-size: clamp(26px, 4vw, 36px); line-height: 1.15; margin: 0 0 8px; letter-spacing: -0.02em; text-wrap: balance; }
h2 { font-size: 20px; margin: 0 0 12px; letter-spacing: -0.01em; text-wrap: balance; }
h3 { font-size: 16px; margin: 0 0 4px; }
.lede { color: var(--muted); margin: 0 0 16px; font-size: 17px; max-width: 60ch; }
.promise {
  display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600;
  color: var(--ok); background: var(--accent-soft); border-radius: 999px; padding: 6px 12px; margin-bottom: 24px;
}
.promise svg { width: 16px; height: 16px; flex: none; }

/* Tool workspace */
.tool { display: flex; flex-direction: column; gap: 16px; }
.dropzone {
  border: 2px dashed var(--line); border-radius: var(--radius); background: var(--surface);
  padding: 40px 16px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s;
}
.dropzone.over, .dropzone:hover { border-color: var(--accent); background: var(--accent-soft); }
.dropzone strong { display: block; font-size: 18px; margin-bottom: 4px; }
.dropzone span { color: var(--muted); font-size: 14px; }
.dropzone.compact { padding: 16px; }
.dropzone.compact strong { font-size: 15px; display: inline; margin: 0; }

.file-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.file-list:empty { display: none; }
.file-list li {
  display: flex; align-items: center; gap: 10px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px;
}
.file-list li.dragging { opacity: .4; }
.file-list li.target { border-color: var(--accent); }
.file-list .thumb { width: 40px; height: 40px; object-fit: cover; border-radius: 6px; background: var(--paper); flex: none; }
.grip { cursor: grab; color: var(--muted); user-select: none; font-size: 18px; line-height: 1; }
.num { color: var(--muted); width: 22px; text-align: right; font-variant-numeric: tabular-nums; flex: none; }
.name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.meta { color: var(--muted); font-size: 13px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.err { color: var(--danger); font-size: 13px; }
.icon {
  border: 0; background: none; color: var(--muted); cursor: pointer; font: inherit;
  font-size: 16px; padding: 4px 7px; border-radius: 6px; line-height: 1;
}
.icon:hover:not(:disabled) { background: var(--paper); color: var(--ink); }
.icon:disabled { opacity: .3; cursor: default; }

/* Page thumbnail grid */
.pages { display: grid; grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 12px; }
.pages:empty { display: none; }
.page {
  position: relative; background: var(--surface); border: 2px solid var(--line); border-radius: 10px;
  padding: 10px 10px 6px; display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.page.selectable { cursor: pointer; }
.page.selected { border-color: var(--accent); background: var(--accent-soft); }
.page.dragging { opacity: .4; }
.page.target { border-style: dashed; border-color: var(--accent); }
.page .frame { width: 100%; aspect-ratio: 1 / 1.2; display: grid; place-items: center; overflow: hidden; }
.page canvas { flex: none; box-shadow: 0 0 0 1px var(--line); background: #fff; }
.page .label { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.page .actions { display: flex; gap: 2px; }
.page .check {
  position: absolute; top: 6px; left: 6px; width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid var(--line); background: var(--surface); display: grid; place-items: center;
  font-size: 13px; color: var(--accent-ink);
}
.page.selected .check { background: var(--accent); border-color: var(--accent); }
.pages.no-select .page { cursor: default; border-color: var(--line); background: var(--surface); pointer-events: none; }
.pages.no-select .check { display: none; }

/* Options + actions */
.options {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.options .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > span, .field legend { font-size: 13px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
fieldset.field { border: 0; padding: 0; margin: 0; }
.choices { display: flex; flex-wrap: wrap; gap: 6px; }
.choices label {
  display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 10px; cursor: pointer; font-size: 15px;
}
.choices label:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.choices input { accent-color: var(--accent); }
input[type=text], input[type=number], select {
  width: 100%; padding: 9px 11px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); font: inherit;
}
input[type=range] { width: 100%; accent-color: var(--accent); }
input[type=color] { width: 48px; height: 36px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); padding: 2px; }
.check-row { display: flex; align-items: center; gap: 8px; font-size: 15px; }
.check-row input { accent-color: var(--accent); width: 16px; height: 16px; }

.bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.bar .grow { flex: 1; }
.btn {
  padding: 11px 20px; border-radius: 10px; font: inherit; font-weight: 600; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
.btn:hover:not(:disabled) { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover:not(:disabled) { filter: brightness(1.06); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.small { padding: 7px 12px; font-size: 14px; }
.status { color: var(--muted); min-height: 1.5em; font-variant-numeric: tabular-nums; }
.status.bad { color: var(--danger); }
.status.good { color: var(--ok); }
.progress { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; }
.progress > div { height: 100%; width: 0; background: var(--accent); transition: width .2s; }

/* Ads */
.ad-slot { margin-top: 32px; min-height: 0; display: flex; justify-content: center; }
.ad-slot:empty { display: none; }
.ad-slot .ad-label { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); text-align: center; margin-bottom: 4px; }

/* Content sections below tools */
.content { margin-top: 48px; display: grid; gap: 32px; }
.content p, .content li { max-width: 68ch; }
.steps { padding-left: 20px; margin: 0; display: grid; gap: 6px; }
.faq { display: grid; gap: 8px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 8px 0 0; color: var(--muted); }

/* Home */
.hero { padding-block: 16px 8px; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); max-width: 18ch; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 8px; }
.tool-card {
  display: flex; gap: 12px; align-items: flex-start; padding: 16px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line); text-decoration: none; color: var(--ink);
  box-shadow: var(--shadow); transition: border-color .15s, transform .15s;
}
.tool-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.tool-card svg { width: 36px; height: 36px; flex: none; color: var(--accent); }
.tool-card p { margin: 2px 0 0; color: var(--muted); font-size: 14px; }
.why { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.why h3 { margin-bottom: 4px; }
.why p { margin: 0; color: var(--muted); font-size: 15px; }

/* Prose pages */
.prose h2 { margin-top: 32px; }
.prose p, .prose li { max-width: 68ch; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; }
.prose th, .prose td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-scroll { overflow-x: auto; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); font-size: 14px; color: var(--muted); }
.site-footer .wrap { padding-block: 24px; display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.site-footer a { color: var(--muted); }
.site-footer button.linklike { background: none; border: 0; padding: 0; font: inherit; color: var(--muted); text-decoration: underline; cursor: pointer; }

/* Consent banner */
.consent {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
  background: var(--surface); border-top: 1px solid var(--line); box-shadow: 0 -4px 24px rgba(0,0,0,.08);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.consent .wrap { padding-block: 14px; display: flex; gap: 12px 20px; align-items: center; flex-wrap: wrap; }
.consent p { margin: 0; flex: 1 1 320px; font-size: 14px; }
.consent .bar { flex: none; }

@media (max-width: 560px) {
  .site-nav a:not(.donate) { display: none; }
  .file-list .meta { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}