:root {
  --paper: oklch(96% 0.012 85);
  --paper-2: oklch(92% 0.016 85);
  --ink: oklch(19% 0.01 60);
  --muted: oklch(46% 0.015 70);
  --rule: oklch(80% 0.02 80);
  --accent: oklch(55% 0.2 33);
  --accent-ink: oklch(98% 0.01 85);
  --ok: oklch(46% 0.11 150);
  --warn: oklch(52% 0.13 70);

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --fast: 150ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: oklch(17% 0.01 60);
    --paper-2: oklch(22% 0.012 60);
    --ink: oklch(94% 0.012 85);
    --muted: oklch(70% 0.015 80);
    --rule: oklch(34% 0.015 70);
    --accent: oklch(70% 0.17 35);
    --accent-ink: oklch(16% 0.01 60);
    --ok: oklch(76% 0.12 150);
    --warn: oklch(78% 0.12 80);
  }
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 1rem/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}

.shell { max-width: 1120px; margin: 0 auto; padding: clamp(1.25rem, 4vw, 3rem) 1rem 3rem; }

/* ── masthead ── */
.masthead { display: grid; gap: 1rem 3rem; border-bottom: 2px solid var(--ink); padding-bottom: 2rem; }
@media (min-width: 860px) {
  .masthead { grid-template-columns: 1.1fr 1fr; align-items: end; }
  .pledge { grid-column: 2; }
}
.wordmark {
  margin: 0;
  font: 700 clamp(4rem, 3rem + 9vw, 9rem)/0.85 var(--serif);
  letter-spacing: -0.04em;
  grid-row: span 2;
}
.wordmark span { color: var(--accent); }
.lede { margin: 0; font: 1.2rem/1.5 var(--serif); max-width: 38ch; }
.pledge { margin: 0; font: 0.8rem/1.4 var(--mono); color: var(--muted); display: flex; gap: 0.6rem; align-items: center; }
.dot { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: var(--ok); flex: none; }

/* ── layout ── */
.layout { display: grid; gap: 2.5rem; margin-top: 2.5rem; }
@media (min-width: 860px) { .layout { grid-template-columns: 17rem 1fr; gap: 4rem; } }

.method h2 { font: 600 0.75rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); margin: 0 0 1rem; }
.method ol { margin: 0; padding: 0; list-style: none; counter-reset: step; display: grid; gap: 1.1rem; }
.method li { counter-increment: step; padding-left: 3rem; position: relative; font-size: 0.95rem; }
.method li::before {
  content: "0" counter(step);
  position: absolute; left: 0; top: -0.15rem;
  font: 700 1.6rem/1 var(--serif); color: var(--accent);
}

/* ── tabs ── */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--rule); margin-bottom: 1.5rem; }
.tab {
  appearance: none; border: 0; background: none; color: var(--muted); cursor: pointer;
  font: 600 0.8rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.1em;
  padding: 0.9rem 1.25rem; border-bottom: 3px solid transparent; margin-bottom: -1px;
  transition: color var(--fast), border-color var(--fast);
}
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }

/* ── drop zone ── */
.drop {
  display: grid; gap: 0.35rem; place-content: center; text-align: center;
  min-height: 11rem; padding: 2rem 1rem; cursor: pointer; position: relative;
  border: 2px dashed var(--ink); background: transparent;
  transition: background var(--fast), border-color var(--fast), transform var(--fast) var(--ease);
}
.drop:hover, .drop.over { background: var(--paper-2); border-color: var(--accent); }
.drop.over { transform: scale(1.005); }
.drop:focus-within { outline: 3px solid var(--accent); outline-offset: 3px; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop-title { font: 700 1.6rem/1.1 var(--serif); }
.drop-sub { font: 0.78rem/1.4 var(--mono); color: var(--muted); }

/* ── queue ── */
.queue { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 1rem; }
.item { border: 1px solid var(--rule); background: var(--paper); padding: 1rem 1.1rem; display: grid; gap: 0.6rem; }
.item.error { border-color: var(--accent); }
.item-head { display: flex; gap: 0.75rem; align-items: baseline; flex-wrap: wrap; }
.item-name { font: 600 1rem/1.2 var(--serif); overflow-wrap: anywhere; }
.badge { font: 600 0.68rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; padding: 0.25rem 0.45rem; border: 1px solid var(--ink); }
.badge.c2pa { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.item-sum { margin: 0; font-size: 0.9rem; color: var(--muted); }
.item-sum strong { color: var(--ink); }
.removed { margin: 0; padding: 0; list-style: none; font: 0.8rem/1.5 var(--mono); border-top: 1px solid var(--rule); }
.removed li { display: flex; justify-content: space-between; gap: 1rem; padding: 0.3rem 0; border-bottom: 1px dotted var(--rule); }
.removed li span:last-child { color: var(--muted); white-space: nowrap; }
.note { margin: 0; font-size: 0.85rem; color: var(--warn); }
.err { margin: 0; color: var(--accent); font-weight: 600; }

/* ── texte ── */
.field { display: block; font: 600 0.75rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 0.5rem; }
textarea {
  width: 100%; resize: vertical; padding: 0.9rem 1rem; color: var(--ink); background: transparent;
  font: 0.95rem/1.55 var(--mono); border: 1px solid var(--ink); border-radius: 0;
}
textarea:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.opts { border: 0; padding: 0; margin: 1.25rem 0; display: grid; gap: 0.5rem; font-size: 0.9rem; }
.opts legend { font: 600 0.75rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 0.6rem; padding: 0; }
.opts label { display: flex; gap: 0.6rem; align-items: baseline; cursor: pointer; }
.opts input { accent-color: var(--accent); }

.actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1rem 0; }
.btn {
  appearance: none; cursor: pointer; border: 1px solid var(--ink); background: transparent; color: var(--ink);
  font: 600 0.85rem/1 var(--mono); padding: 0.85rem 1.1rem; border-radius: 0;
  transition: background var(--fast), color var(--fast), transform var(--fast) var(--ease);
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .tab:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.btn.ghost { border-color: transparent; color: var(--muted); }

.report { margin-top: 1.5rem; display: grid; gap: 0.75rem; }
.report-head { margin: 0; font: 700 1.3rem/1.2 var(--serif); }
.findings { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.findings th { text-align: left; font: 600 0.7rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); padding: 0.4rem 0; border-bottom: 1px solid var(--ink); }
.findings td { padding: 0.45rem 0; border-bottom: 1px dotted var(--rule); }
.findings td:nth-child(n+2), .findings th:nth-child(n+2) { text-align: right; font-family: var(--mono); width: 5.5rem; }

.foot { margin-top: 4rem; padding-top: 1rem; border-top: 1px solid var(--rule); font-size: 0.8rem; color: var(--muted); }
code { font-family: var(--mono); font-size: 0.9em; }

[hidden] { display: none !important; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }