/* Layout: tool first. One 54rem column; the drop zone is the hero and is drawn as a strip of film.
   File rows read like a contact sheet: thumbnail, name, sizes, status, action.
   Fonts are system faces on purpose: a privacy-first site makes no third-party font requests. */
:root {
  --paper: #F3F5F4;
  --surface: #FFFFFF;
  --ink: #0F1513;
  --muted: #55625E;
  --line: #D3DCD9;
  --accent: #0A6A5F;
  --accent-ink: #FFFFFF;
  --accent-soft: #DCEEEA;
  --film: #1B2421;
  --film-hole: #F3F5F4;
  --film-ink: #EEF3F1;
  --film-ink-muted: #AEB9B5;
  --film-line: #5B6763;
  --warn: #B23A22;
  --warn-soft: #F7E1DA;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI Variable Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: ui-sans-serif, system-ui, -apple-system, "Segoe UI Variable Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;
  --r: 6px;
  --col: 54rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0C110F;
    --surface: #141B18;
    --ink: #E6EDEA;
    --muted: #97A7A1;
    --line: #26322E;
    --accent: #4CC3B1;
    --accent-ink: #06231F;
    --accent-soft: #123430;
    --film: #050807;
    --film-hole: #1E2925;
    --warn: #FF8E74;
    --warn-soft: #3A1A12;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0C110F;
  --surface: #141B18;
  --ink: #E6EDEA;
  --muted: #97A7A1;
  --line: #26322E;
  --accent: #4CC3B1;
  --accent-ink: #06231F;
  --accent-soft: #123430;
  --film: #050807;
  --film-hole: #1E2925;
  --warn: #FF8E74;
  --warn-soft: #3A1A12;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--font-sans);
}
a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
img { max-width: 100%; }

.wrap {
  max-width: calc(var(--col) + 32px);
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* Header */
.top { border-bottom: 1px solid var(--line); background: var(--surface); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding-block: 12px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none;
  font: 800 1.05rem/1 var(--font-display); letter-spacing: -0.01em;
}
.brand svg { flex: none; }
.nav { display: flex; gap: 4px 18px; flex-wrap: wrap; font-size: 0.95rem; }
.nav a { color: var(--muted); text-decoration: none; padding: 6px 0; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 650; box-shadow: inset 0 -2px 0 var(--accent); }

/* Hero */
.hero { padding-block: 40px 20px; display: grid; gap: 12px; }
.eyebrow {
  margin: 0; color: var(--muted);
  font: 500 0.78rem/1.4 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase;
}
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; letter-spacing: -0.02em; }
h1 { margin: 0; font-size: clamp(2rem, 1.3rem + 3vw, 3.1rem); line-height: 1.08; font-weight: 800; }
.lede { margin: 0; max-width: 40rem; color: var(--muted); font-size: 1.125rem; }

/* Drop zone: a strip of film */
.drop {
  --hole: 10px;
  position: relative;
  display: grid; justify-items: center; gap: 6px;
  padding: calc(var(--hole) * 3.2) 20px;
  border-radius: var(--r);
  background:
    radial-gradient(circle at 50% 50%, var(--film-hole) 0 calc(var(--hole) / 2.4), transparent calc(var(--hole) / 2.4 + 0.5px)) 0 calc(var(--hole) * 0.7) / calc(var(--hole) * 2.2) var(--hole) repeat-x,
    radial-gradient(circle at 50% 50%, var(--film-hole) 0 calc(var(--hole) / 2.4), transparent calc(var(--hole) / 2.4 + 0.5px)) 0 calc(100% - var(--hole) * 0.7) / calc(var(--hole) * 2.2) var(--hole) repeat-x,
    var(--film);
  color: var(--film-ink);
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.drop-frame {
  width: 100%;
  display: grid; justify-items: center; gap: 6px;
  padding: 28px 16px;
  border: 1.5px dashed var(--film-line);
  border-radius: 3px;
}
.drop:hover .drop-frame, .drop.is-over .drop-frame { border-color: var(--accent); }
.drop.is-over { box-shadow: 0 0 0 4px var(--accent-soft); transform: translateY(-1px); }
.drop-title { margin: 0; font: 750 clamp(1.2rem, 1rem + 1vw, 1.5rem)/1.2 var(--font-display); letter-spacing: -0.01em; }
.drop-hint { margin: 0; color: var(--film-ink-muted); font-size: 0.95rem; }
.drop-hint .pick { color: var(--film-ink); text-decoration: underline; text-underline-offset: 0.2em; }
.drop-note { margin: 4px 0 0; font: 500 0.75rem/1.4 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--film-ink-muted); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Options row */
.options { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: end; padding-block: 16px 4px; }
.field { display: grid; gap: 4px; }
.field label { font-size: 0.85rem; color: var(--muted); }
select, .btn {
  font: inherit; font-size: 0.95rem;
  min-height: 42px; padding: 8px 14px;
  border-radius: var(--r); border: 1px solid var(--line);
  background: var(--surface); color: var(--ink);
}
select { padding-right: 32px; }
input[type="number"] {
  font: inherit; font-size: 0.95rem; font-variant-numeric: tabular-nums;
  width: 7rem; min-height: 42px; padding: 8px 10px;
  border-radius: var(--r); border: 1px solid var(--line);
  background: var(--surface); color: var(--ink);
}
.unit { display: inline-flex; align-items: center; gap: 6px; }
.unit > span { color: var(--muted); font-size: 0.9rem; }
.field-group { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.presets { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 16px; }
.preset {
  font: inherit; font-size: 0.86rem; cursor: pointer;
  display: inline-flex; align-items: baseline; gap: 6px;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
.preset span { font: 500 0.74rem/1 var(--font-mono); color: var(--muted); }
.preset span:empty { display: none; }
.preset:hover { border-color: var(--accent); }
.btn { cursor: pointer; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; }
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; filter: none; }
.btn.small { min-height: 36px; padding: 6px 12px; font-size: 0.88rem; }

/* Results */
.results { padding-block: 12px 8px; }
.results-head { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; padding-block: 8px; }
.summary { margin: 0; font-weight: 600; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.file-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.file {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  grid-template-areas: "thumb meta action" "thumb status action";
  gap: 2px 14px; align-items: center;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
}
.file .thumb {
  grid-area: thumb; width: 56px; height: 56px; border-radius: 4px; overflow: hidden;
  background: var(--accent-soft); display: grid; place-items: center;
  color: var(--accent); font: 600 0.7rem/1 var(--font-mono);
}
.file .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.file .meta { grid-area: meta; min-width: 0; }
.file .name { margin: 0; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file .sizes { margin: 0; color: var(--muted); font: 400 0.82rem/1.4 var(--font-mono); font-variant-numeric: tabular-nums; }
.file .status { grid-area: status; margin: 0; font-size: 0.88rem; color: var(--muted); min-width: 0; }
.file .action { grid-area: action; }
.file[data-state="done"] .status { color: var(--accent); }
.file[data-state="error"] .status { color: var(--warn); }
.file.example { border-style: dashed; background: transparent; }
.file.example .tag {
  display: inline-block; margin-left: 6px; padding: 1px 6px; border-radius: 3px;
  background: var(--accent-soft); color: var(--accent);
  font: 600 0.68rem/1.5 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; vertical-align: 2px;
}
.spin { display: inline-block; width: 0.9em; height: 0.9em; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin 0.8s linear infinite; vertical-align: -0.12em; margin-right: 6px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Metadata findings */
.findings { grid-column: 2 / -1; display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.chip {
  display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 0 6px;
  padding: 3px 9px; border-radius: 12px;
  background: var(--paper); border: 1px solid var(--line);
  font-size: 0.82rem;
}
.chip b { font-weight: 600; }
.chip .v { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); }
.chip.gps { background: var(--warn-soft); border-color: transparent; color: var(--warn); }
.chip.gps .v { color: var(--warn); }
.chip.clean { background: var(--accent-soft); border-color: transparent; color: var(--accent); }
.details { grid-column: 2 / -1; margin-top: 4px; font-size: 0.85rem; }
.details summary { cursor: pointer; color: var(--muted); }
.tags { margin: 8px 0 0; display: grid; grid-template-columns: minmax(8rem, max-content) minmax(0, 1fr); gap: 2px 14px; font: 400 0.8rem/1.5 var(--font-mono); }
.tags dt { color: var(--muted); }
.tags dd { margin: 0; overflow-wrap: anywhere; }

/* Article */
.content { padding-block: 40px 24px; display: grid; gap: 36px; }
.content section { display: grid; gap: 10px; max-width: 42rem; }
.content h2 { margin: 0; font-size: clamp(1.35rem, 1.15rem + 0.8vw, 1.7rem); line-height: 1.2; font-weight: 780; }
.content h3 { margin: 8px 0 0; font-size: 1.08rem; line-height: 1.3; }
.content p, .content ul, .content ol { margin: 0; }
.content ul, .content ol { padding-left: 1.3em; display: grid; gap: 6px; }
.path {
  font: 500 0.88rem/1.5 var(--font-mono);
  background: var(--surface); border: 1px solid var(--line); border-radius: 4px;
  padding: 1px 6px;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}
.proof {
  display: grid; gap: 6px;
  padding: 16px 18px; border-left: 3px solid var(--accent);
  background: var(--surface); border-radius: 0 var(--r) var(--r) 0;
}
.proof p { margin: 0; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 650; }
.faq { display: grid; gap: 8px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 12px 16px; }
.faq summary { cursor: pointer; font-weight: 650; }
.faq details p { margin: 8px 0 0; }
.tools { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 10px; max-width: none !important; }
.tool-link {
  display: grid; gap: 4px; padding: 14px 16px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  color: var(--ink); text-decoration: none;
}
.tool-link:hover { border-color: var(--accent); }
.tool-link b { font-family: var(--font-display); }
.tool-link span { color: var(--muted); font-size: 0.92rem; }

/* Footer */
.foot { margin-top: 32px; border-top: 1px solid var(--line); }
.foot .wrap { padding-block: 24px 32px; display: grid; gap: 10px; color: var(--muted); font-size: 0.88rem; }
.foot p { margin: 0; }
.foot .groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr)); gap: 18px 24px; padding-bottom: 10px; }
.foot h3 {
  margin: 0 0 8px; color: var(--ink);
  font: 600 0.74rem/1.3 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase;
}
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 5px; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--ink); text-decoration: underline; }
.article { padding-top: 8px; }

@media (max-width: 560px) {
  .file { grid-template-columns: 48px minmax(0, 1fr); grid-template-areas: "thumb meta" "thumb status" "action action"; }
  .file .thumb { width: 48px; height: 48px; }
  .file .action { justify-self: start; margin-top: 6px; }
  .findings, .details { grid-column: 1 / -1; }
  .hero { padding-block: 28px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}