/* PDF Censor · MonHan Digital Solutions */
@font-face { font-family: "IBM Plex Sans"; src: url("./fonts/IBMPlexSans-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("./fonts/IBMPlexSans-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("./fonts/IBMPlexSans-SemiBold.woff2") format("woff2"); font-weight: 600 700; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("./fonts/IBMPlexMono-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --bg: #e9ecef;
  --surface: #ffffff;
  --fg: #16191d;
  --muted: #5b636e;
  --line: #d2d7dd;
  --accent: #b42318;
  --accent-fg: #ffffff;
  --sheet-shadow: 0 1px 2px rgba(20,25,30,.08), 0 4px 16px rgba(20,25,30,.08);
  --logo-filter: none;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111316; --surface: #1b1e22; --fg: #e7e9ec; --muted: #9aa2ad; --line: #2e3238;
    --accent: #f07264; --accent-fg: #1a0d0b;
    --sheet-shadow: 0 1px 2px rgba(0,0,0,.5), 0 6px 20px rgba(0,0,0,.35);
    --logo-filter: invert(1) hue-rotate(180deg) brightness(1.15);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0; display: flex; flex-direction: column; min-height: 100vh;
  background: var(--bg); color: var(--fg);
  font-family: var(--font-body); font-size: 15px; line-height: 1.5;
}
[hidden] { display: none !important; }

/* ---------- Header ---------- */
.bar {
  position: sticky; top: 0; z-index: 5;
  background: var(--surface); border-bottom: 1px solid var(--line);
  padding: max(10px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 10px max(16px, env(safe-area-inset-left));
}
.bar-inner { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; min-width: 0; }
.brand-mark { display: block; width: 26px; height: 26px; flex: none; }
.brand h1 { font-size: 16px; font-weight: 600; margin: 0; white-space: nowrap; }
.byline { color: var(--muted); font-size: 12px; white-space: nowrap; }
.partner-link { display: inline-flex; line-height: 0; border-radius: 3px; transition: transform .16s; }
.partner-link:hover { transform: translateY(-1px); }
.partner-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.partner-mark { height: 20px; width: auto; filter: var(--logo-filter); opacity: .8; transition: opacity .16s; }
.partner-link:hover .partner-mark { opacity: 1; }
.file-name { font-family: var(--font-mono); font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 24ch; padding-left: 10px; border-left: 1px solid var(--line); }
.file-name:empty { display: none; }
.tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

button, .btn {
  font: inherit; font-size: 14px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border-radius: 6px; border: 1px solid var(--line);
  background: var(--surface); color: var(--fg); cursor: pointer;
}
button:hover:not(:disabled), .btn:hover { border-color: var(--muted); }
button:focus-visible, .btn:focus-visible, label.btn:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
button:disabled { opacity: .45; cursor: not-allowed; }
.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.primary:hover:not(:disabled) { filter: brightness(1.08); border-color: var(--accent); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; padding: 7px 11px; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { background: var(--fg); color: var(--surface); }
.count { font-family: var(--font-mono); font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
input[type=file] { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

/* ---------- Main ---------- */
main {
  flex: 1;
  padding: 24px max(16px, env(safe-area-inset-right)) 48px max(16px, env(safe-area-inset-left));
}
.wrap { max-width: 1076px; margin: 0 auto; display: grid; gap: 20px; }

.drop {
  background: var(--surface); border: 1.5px dashed var(--line); border-radius: 10px;
  padding: clamp(24px, 6vw, 60px); display: grid; gap: 22px; justify-items: start;
}
.drop.over { border-color: var(--accent); }
.drop h2 { margin: 0; font-size: clamp(22px, 3.4vw, 30px); font-weight: 600; text-wrap: balance; line-height: 1.25; max-width: 22em; }
.drop p { margin: 0; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.steps li { display: grid; grid-template-columns: 26px 1fr; gap: 18px; align-items: baseline; }
.steps b { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }
.steps strong { font-weight: 600; }

.privacy { width: 100%; border-top: 1px solid var(--line); padding-top: 22px; display: grid; gap: 16px; }
.privacy-title { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 16px; }
.lock {
  width: 14px; height: 17px; flex: none; background: var(--accent);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 17'%3E%3Cpath d='M3.4 7.4V5.2a3.6 3.6 0 0 1 7.2 0v2.2' fill='none' stroke='black' stroke-width='2'/%3E%3Crect x='1' y='7' width='12' height='9' rx='2'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 17'%3E%3Cpath d='M3.4 7.4V5.2a3.6 3.6 0 0 1 7.2 0v2.2' fill='none' stroke='black' stroke-width='2'/%3E%3Crect x='1' y='7' width='12' height='9' rx='2'/%3E%3C/svg%3E") center / contain no-repeat;
}
.privacy-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.privacy-list li { display: grid; gap: 4px; align-content: start; padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.privacy-list b { font-size: 14px; font-weight: 600; }
.privacy-list span { font-size: 13px; color: var(--muted); line-height: 1.5; }
.note { font-size: 13px; color: var(--muted); }

.hint { font-size: 13px; color: var(--muted); text-align: center; margin: 0; }
.hint kbd { font-family: var(--font-mono); font-size: 11px; padding: 1px 5px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; background: var(--surface); color: var(--fg); }
.pages { display: grid; gap: 22px; }
.page { position: relative; margin: 0 auto; width: 100%; background: #fff; box-shadow: var(--sheet-shadow); }
.page canvas { display: block; width: 100%; height: auto; }
.page-num { position: absolute; top: 100%; right: 0; margin-top: 3px; font-family: var(--font-mono); font-size: 11px; color: var(--muted); }

/* pdf.js text layer: invisible text used only for selecting */
.textLayer { position: absolute; inset: 0; overflow: hidden; line-height: 1; text-align: initial; -webkit-text-size-adjust: none; text-size-adjust: none; forced-color-adjust: none; transform-origin: 0 0; z-index: 1; }
.textLayer span, .textLayer br { color: transparent; position: absolute; white-space: pre; cursor: text; transform-origin: 0% 0%; }
.textLayer span.markedContent { top: 0; height: 0; }
.textLayer ::selection { background: rgba(180, 35, 24, .35); }
.layer { position: absolute; inset: 0; z-index: 2; user-select: none; -webkit-user-select: none; }
body.box-mode .layer { touch-action: none; cursor: crosshair; }
body:not(.box-mode) .layer { pointer-events: none; }
body:not(.box-mode) .layer .box { pointer-events: auto; cursor: pointer; }
.box { position: absolute; background: #000; outline: 1px solid rgba(255,255,255,.25); }
.box.sel { outline: 2px solid var(--accent); outline-offset: 2px; }
.box .del {
  position: absolute; top: -14px; right: -14px; width: 26px; height: 26px; padding: 0;
  justify-content: center; border-radius: 50%; font-size: 15px; line-height: 1;
  background: var(--accent); color: var(--accent-fg); border-color: var(--accent); display: none;
}
.box.sel .del { display: inline-flex; }

/* ---------- Footer ---------- */
.foot {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px;
  max-width: 1076px; width: 100%; margin: 0 auto;
  padding: 0 max(16px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  font-size: 12px; color: var(--muted);
}
.foot p { margin: 0; }
.foot a { color: var(--fg); font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--line); }
.foot a:hover { border-color: var(--accent); }

/* ---------- Overlays ---------- */
.busy { position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; background: rgba(10,12,15,.45); }
.busy-card { background: var(--surface); color: var(--fg); border-radius: 10px; padding: 18px 22px; min-width: 260px; max-width: calc(100% - 32px); display: grid; gap: 10px; }
.busy-card small { color: var(--muted); font-size: 12px; }
.meter { height: 4px; background: var(--line); border-radius: 2px; overflow: hidden; }
.meter i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .15s; }
.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(18px + env(safe-area-inset-bottom, 0px)); z-index: 30;
  background: var(--fg); color: var(--surface); padding: 9px 14px; border-radius: 6px; font-size: 14px;
  max-width: calc(100% - 32px);
}

/* ---------- Landing (no PDF yet): fits the screen, no scroll ---------- */
body.empty { height: 100vh; height: 100dvh; min-height: 0; overflow: hidden; }
body.empty main { flex: 1 1 auto; min-height: 0; display: flex; padding-block: clamp(12px, 2.6vh, 24px); }
body.empty .wrap { flex: 1; align-content: center; min-height: 0; }
body.empty .drop { padding: clamp(20px, 4.5vh, 56px) clamp(20px, 5vw, 60px); gap: clamp(12px, 2.3vh, 22px); }
body.empty .drop h2 { font-size: clamp(20px, min(3.2vw, 4.2vh), 30px); }
body.empty .steps { gap: clamp(6px, 1.3vh, 12px); }
body.empty .privacy { padding-top: clamp(12px, 2.3vh, 22px); gap: clamp(10px, 1.7vh, 16px); }
body.empty .privacy-list li { padding: clamp(9px, 1.5vh, 14px) 14px; }
body.empty .foot { padding-bottom: max(14px, env(safe-area-inset-bottom)); }
@media (max-height: 760px) {
  body.empty .drop { font-size: 14px; }
  body.empty .privacy-list span { font-size: 12px; line-height: 1.4; }
}
@media (max-height: 640px) {
  body.empty .privacy-list span { display: none; }
}

@media (max-width: 640px) {
  /* landing on phones: only the open button in the bar, privacy as compact chips */
  body.empty .tools > :not(label) { display: none; }
  body.empty .tools { width: auto; }
  body.empty .drop { font-size: 13.5px; line-height: 1.45; }
  body.empty .steps li { gap: 10px; grid-template-columns: 16px 1fr; }
  body.empty .privacy-list { grid-template-columns: 1fr 1fr; gap: 8px; }
  body.empty .privacy-list li { padding: 9px 10px; }
  body.empty .privacy-list b { font-size: 12.5px; line-height: 1.3; }
  body.empty .privacy-list span { display: none; }
  body.empty .privacy-title { font-size: 14px; }
  body.empty .note { font-size: 12px; }
  body.empty .foot { font-size: 11px; }
  body.empty .foot p:first-child { display: none; }
}
@media (max-width: 640px) and (max-height: 700px) {
  body.empty .note { display: none; }
  body.empty .drop h2 { font-size: 19px; }
  body.empty .drop { padding: 16px 18px; gap: 10px; font-size: 13px; }
  body.empty main { padding-block: 10px; }
}

@media (max-width: 640px) {
  .file-name { display: none; }
  .brand { gap: 8px; }
  .brand-mark { width: 22px; height: 22px; }
  .brand h1 { font-size: 15px; }
  .byline { font-size: 11px; }
  .partner-mark { height: 16px; }
  .tools { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { .meter i, .partner-link, .partner-mark { transition: none; } }