:root {
  --paper: #F2EFE7;
  --surface: #FFFFFF;
  --ink: #161B1D;
  --ink-soft: #5B6467;
  --line: #DAD5C7;
  --accent: #1E7F72;
  --accent-strong: #145E54;
  --accent-ink: #FFFFFF;
  --flag: #B5652C;
  --flag-bg: #F3E4D3;
  --code-bg: #EAE6D9;
  --danger: #B23A2F;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #10161A;
    --surface: #172023;
    --ink: #ECE8DF;
    --ink-soft: #9BA6A5;
    --line: #2B3538;
    --accent: #55C2AF;
    --accent-strong: #8FE0D1;
    --accent-ink: #08201C;
    --flag: #E1985E;
    --flag-bg: #2E2116;
    --code-bg: #1B2427;
    --danger: #E28A80;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  padding: 0 20px;
  line-height: 1.5;
}
.wrap { max-width: 780px; margin: 0 auto; padding-block: 40px 64px; }

h1, h2, h3 { font-family: "IBM Plex Sans", system-ui, sans-serif; text-wrap: balance; margin: 0; }
code, .mono, .mono * { font-family: "IBM Plex Mono", ui-monospace, monospace; }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 28px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px; background: var(--accent); color: var(--accent-ink);
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px; flex-shrink: 0;
  font-family: "IBM Plex Mono", monospace;
}
.brand-name { font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.top-badge {
  font-family: "IBM Plex Mono", monospace; font-size: 11.5px; letter-spacing: 0.03em; text-transform: uppercase;
  color: var(--accent-strong); background: color-mix(in srgb, var(--accent) 14%, transparent);
  padding: 5px 10px; border-radius: 100px; border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  white-space: nowrap;
}

.lede { margin-bottom: 8px; font-size: 27px; font-weight: 600; letter-spacing: -0.015em; }
.lede-sub { color: var(--ink-soft); font-size: 15.5px; max-width: 58ch; margin-top: 10px; }

.trust-strip { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0 32px; }
.trust-item {
  display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--line); padding: 7px 11px; border-radius: 8px;
}
.trust-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

/* dropzone */
.dropzone {
  border: 1.5px dashed var(--line); border-radius: 14px; background: var(--surface);
  padding: 36px 24px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--surface)); }
.dropzone:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.dz-icon { font-size: 26px; margin-bottom: 10px; }
.dz-title { font-weight: 600; font-size: 15.5px; }
.dz-sub { color: var(--ink-soft); font-size: 13px; margin-top: 5px; }
.dz-formats { font-family: "IBM Plex Mono", monospace; font-size: 11.5px; color: var(--ink-soft); margin-top: 12px; }

.error-msg { color: var(--danger); font-size: 13.5px; margin-top: 10px; display: none; }
.error-msg.show { display: block; }

/* file card */
.filecard { display: none; margin-top: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.filecard.show { display: block; }
.filecard-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.filecard-name { font-weight: 600; font-size: 14.5px; word-break: break-all; }
.filecard-meta { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--ink-soft); white-space: nowrap; font-variant-numeric: tabular-nums; }
video.preview { width: 100%; max-height: 220px; border-radius: 9px; margin-top: 12px; background: #000; display: block; }

.scan-status { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 13px; color: var(--ink-soft); }
.spinner { width: 13px; height: 13px; border-radius: 50%; border: 2px solid var(--line); border-top-color: var(--accent); animation: spin .7s linear infinite; }
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; } }
@keyframes spin { to { transform: rotate(360deg); } }

/* manifest */
.manifest { display: none; margin-top: 16px; }
.manifest.show { display: block; }
.manifest-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.manifest-title { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); }
.manifest-count { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--flag); font-weight: 600; }

.mrow {
  display: grid; grid-template-columns: 96px 1fr auto; gap: 10px 14px; align-items: center;
  padding: 10px 4px; border-top: 1px solid var(--line);
}
.mrow:first-child { border-top: none; }
@media (max-width: 520px) { .mrow { grid-template-columns: 1fr; gap: 4px; } }

.pill {
  font-family: "IBM Plex Mono", monospace; font-size: 10.5px; letter-spacing: 0.03em; text-transform: uppercase;
  padding: 3px 7px; border-radius: 5px; text-align: center; white-space: nowrap; width: fit-content;
}
.pill-flag { background: var(--flag-bg); color: var(--flag); }
.pill-info { background: transparent; color: var(--ink-soft); border: 1px solid var(--line); }

.mrow-label { font-size: 13.5px; color: var(--ink-soft); }
.mrow-value { font-family: "IBM Plex Mono", monospace; font-size: 13px; word-break: break-word; }

.clean-msg { font-size: 13.5px; color: var(--ink-soft); padding: 10px 4px; }

/* actions */
.actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
button {
  font-family: "IBM Plex Sans", sans-serif; font-size: 14px; font-weight: 600; border-radius: 9px;
  padding: 11px 18px; border: 1px solid transparent; cursor: pointer; transition: opacity .12s, transform .05s;
}
button:active { transform: translateY(1px); }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover:not(:disabled) { background: var(--accent-strong); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-secondary:hover:not(:disabled) { border-color: var(--accent); }

.result { display: none; margin-top: 18px; border-radius: 12px; padding: 16px 18px; background: color-mix(in srgb, var(--accent) 10%, var(--surface)); border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line)); }
.result.show { display: block; }
.result-title { font-weight: 600; font-size: 14.5px; margin-bottom: 4px; }
.result-sub { font-size: 13px; color: var(--ink-soft); }
.result-note { font-size: 12px; color: var(--ink-soft); margin-top: 10px; }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(8px);
  background: var(--ink); color: var(--paper); font-size: 13px; padding: 10px 16px; border-radius: 9px;
  opacity: 0; pointer-events: none; transition: opacity .18s, transform .18s; z-index: 10; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* sections */
section { margin-top: 44px; }
.section-eyebrow { font-family: "IBM Plex Mono", monospace; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin-bottom: 8px; }
.section-title { font-size: 19px; font-weight: 600; margin-bottom: 14px; letter-spacing: -0.01em; }

.example-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; opacity: .92; }
.example-tag {
  display: inline-block; margin-bottom: 14px; font-family: "IBM Plex Mono", monospace; font-size: 10.5px;
  text-transform: uppercase; letter-spacing: .04em; color: var(--ink-soft); border: 1px dashed var(--line); padding: 3px 8px; border-radius: 6px;
}

.boxlist { background: var(--code-bg); border-radius: 12px; padding: 16px 18px; font-family: "IBM Plex Mono", monospace; font-size: 12.5px; overflow-x: auto; }
.boxlist div { padding: 3px 0; white-space: pre; }
.boxlist .kept { color: var(--accent-strong); }
.boxlist .wiped { color: var(--flag); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--flag) 60%, transparent); }

.howgrid { display: grid; gap: 14px; grid-template-columns: repeat(2, 1fr); margin-top: 16px; }
@media (max-width: 560px) { .howgrid { grid-template-columns: 1fr; } }
.how-item { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.how-item h3 { font-size: 13.5px; margin-bottom: 5px; }
.how-item p { font-size: 12.5px; color: var(--ink-soft); margin: 0; }

.limitation { font-size: 12.5px; color: var(--ink-soft); margin-top: 16px; border-left: 2px solid var(--line); padding-left: 12px; }

footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-soft); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

a { color: var(--accent-strong); }
input[type="file"] { display: none; }

/* batch queue */
.batch-bar {
  display: none; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin-top: 18px; padding: 12px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
}
.batch-bar.show { display: flex; }
.batch-count { font-size: 13px; color: var(--ink-soft); font-family: "IBM Plex Mono", monospace; }
#queue { display: flex; flex-direction: column; gap: 16px; margin-top: 16px; }
#queue .filecard { margin-top: 0; }
.filecard.has-error { border-color: color-mix(in srgb, var(--danger) 45%, var(--line)); }
img.preview { width: 100%; max-height: 220px; object-fit: contain; border-radius: 9px; margin-top: 12px; background: var(--code-bg); display: block; }
.file-generic { display: flex; align-items: center; gap: 10px; margin-top: 12px; padding: 10px 12px; background: var(--code-bg); border-radius: 9px; font-family: "IBM Plex Mono", monospace; font-size: 12.5px; color: var(--ink-soft); }

/* hidden-text tool */
.text-input {
  width: 100%; min-height: 120px; margin-top: 14px; padding: 14px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  font-family: "IBM Plex Mono", monospace; font-size: 13.5px; resize: vertical;
}
.text-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
#texttool .manifest { margin-top: 14px; }