:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --surface-2: #faf8f4;
  --ink: #23211d;
  --ink-2: #5e5a52;
  --ink-3: #8b867c;
  --line: #e4dfd5;
  --accent: #1f6f62;
  --accent-ink: #ffffff;
  --accent-soft: #e2efeb;
  --warn: #9a5a00;
  --warn-soft: #fbf0dc;
  --bad: #a3352b;
  --bad-soft: #f8e4e1;
  --shadow: 0 1px 2px rgba(40, 32, 20, .06), 0 4px 16px rgba(40, 32, 20, .05);
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171614;
    --surface: #211f1c;
    --surface-2: #1c1b18;
    --ink: #eeeae2;
    --ink-2: #b9b3a7;
    --ink-3: #8a8478;
    --line: #36332e;
    --accent: #5fbfae;
    --accent-ink: #0f1a17;
    --accent-soft: #1f3330;
    --warn: #e2a64a;
    --warn-soft: #33291a;
    --bad: #e7877c;
    --bad-soft: #3a2220;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #171614; --surface: #211f1c; --surface-2: #1c1b18; --ink: #eeeae2; --ink-2: #b9b3a7; --ink-3: #8a8478;
  --line: #36332e; --accent: #5fbfae; --accent-ink: #0f1a17; --accent-soft: #1f3330; --warn: #e2a64a; --warn-soft: #33291a;
  --bad: #e7877c; --bad-soft: #3a2220; color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.7;
}
body.has-bar { padding-bottom: 84px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

.top { padding: 28px 0 8px; }
.top-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; }
h1 { font-size: 26px; line-height: 1.3; margin: 0 0 4px; letter-spacing: .02em; }
.lead { margin: 0; color: var(--ink-2); }

.btn {
  appearance: none; border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  font: inherit; font-size: 14px; padding: 8px 16px; border-radius: 999px; cursor: pointer;
  white-space: nowrap; transition: background .15s, border-color .15s;
}
.btn:hover { border-color: var(--ink-3); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; }
.btn.small { font-size: 13px; padding: 6px 14px; }
.btn:focus-visible, .thumb-img:focus-visible, .drop:focus-within { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }

.drop {
  margin-top: 20px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  min-height: 210px; padding: 28px 16px; text-align: center; cursor: pointer;
  background: var(--surface); border: 2px dashed var(--line); border-radius: var(--radius);
  transition: border-color .15s, background .15s;
}
.drop:hover { border-color: var(--accent); background: var(--surface-2); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.drop-icon { color: var(--accent); margin-bottom: 6px; }
.drop-title { font-size: 19px; font-weight: 600; }
.drop-sub { color: var(--ink-2); }
.drop-kinds { color: var(--ink-3); font-size: 13px; margin-top: 8px; }

.privacy { display: flex; align-items: center; gap: 6px; color: var(--ink-2); font-size: 13px; margin: 10px 2px 24px; }
.privacy svg { color: var(--accent); flex: none; }

.file {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 20px; margin-bottom: 18px;
}
.file-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.file-name { font-weight: 600; font-size: 16px; word-break: break-all; }
.file-meta { color: var(--ink-3); font-size: 13px; }
.badge { flex: none; font-size: 13px; font-weight: 600; padding: 3px 12px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.status-none .badge, .status-unsupported .badge { background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--line); }
.status-password .badge, .status-irm .badge { background: var(--warn-soft); color: var(--warn); }
.status-error .badge { background: var(--bad-soft); color: var(--bad); }
.callout { background: var(--warn-soft); color: var(--ink); border-radius: 10px; padding: 10px 14px; margin: 12px 0 0; }
.status-error .callout { background: var(--bad-soft); }
.notes { margin: 10px 0 0; padding-left: 1.2em; color: var(--ink-2); font-size: 13.5px; }
.notes li + li { margin-top: 2px; }
.spinner { width: 22px; height: 22px; margin: 14px 0 2px; border-radius: 50%; border: 3px solid var(--line); border-top-color: var(--accent); animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; margin-top: 16px; }
.thumb { position: relative; margin: 0; background: var(--surface-2); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: border-color .15s, box-shadow .15s; }
.thumb.on { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent) inset; }
.thumb-img { display: flex; align-items: center; justify-content: center; width: 100%; aspect-ratio: 4 / 3; padding: 0; border: 0; cursor: zoom-in;
  background: repeating-conic-gradient(color-mix(in srgb, var(--line) 55%, transparent) 0 25%, transparent 0 50%) 0 0 / 16px 16px; }
.thumb-img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.ext-icon { font-weight: 700; color: var(--ink-3); font-size: 18px; letter-spacing: .04em; }
.pick { position: absolute; top: 8px; left: 8px; z-index: 1; display: flex; padding: 5px; border-radius: 8px; background: color-mix(in srgb, var(--surface) 88%, transparent); cursor: pointer; }
.pick input { width: 18px; height: 18px; margin: 0; accent-color: var(--accent); cursor: pointer; }
figcaption { padding: 8px 10px 10px; font-size: 12.5px; line-height: 1.5; display: flex; flex-direction: column; gap: 2px; }
.thumb-name { font-weight: 600; word-break: break-all; }
.thumb-meta { color: var(--ink-3); }
.chips { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }
.chip { font-size: 11.5px; padding: 1px 8px; border-radius: 999px; background: var(--warn-soft); color: var(--warn); }

.more { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.more summary { cursor: pointer; font-weight: 600; color: var(--ink-2); }
.hint { margin: 6px 0 0; color: var(--ink-3); font-size: 13px; }
.file-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; margin-top: 16px; }

.bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 5; background: color-mix(in srgb, var(--surface) 94%, transparent); backdrop-filter: blur(8px); border-top: 1px solid var(--line); padding: 12px 0 calc(12px + env(safe-area-inset-bottom)); }
.bar-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.bar-actions { display: flex; gap: 8px; }
#bar-count { font-weight: 600; }

dialog#viewer { width: min(1100px, calc(100vw - 32px)); max-height: calc(100vh - 32px); padding: 0; border: 0; border-radius: var(--radius); background: var(--surface); color: var(--ink); box-shadow: 0 20px 60px rgba(0, 0, 0, .35); }
dialog#viewer::backdrop { background: rgba(20, 18, 15, .6); }
.viewer-body { display: flex; flex-direction: column; max-height: calc(100vh - 32px); }
.viewer-img { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 16px; background: var(--surface-2); }
.viewer-img img { max-width: 100%; max-height: calc(100vh - 220px); object-fit: contain; }
.viewer-info { padding: 14px 18px 16px; border-top: 1px solid var(--line); }
.viewer-name { font-weight: 600; word-break: break-all; }
.viewer-meta { color: var(--ink-2); font-size: 13px; }
.viewer-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; justify-content: flex-end; }

.dropping { position: fixed; inset: 0; z-index: 10; display: flex; align-items: center; justify-content: center; background: color-mix(in srgb, var(--accent) 18%, rgba(0, 0, 0, .35)); pointer-events: none; }
.dropping span { background: var(--surface); color: var(--ink); padding: 16px 28px; border-radius: 999px; font-weight: 600; font-size: 18px; box-shadow: var(--shadow); }

.foot { color: var(--ink-3); font-size: 12px; line-height: 1.7; padding-top: 24px; padding-bottom: 32px; border-top: 1px solid var(--line); margin-top: 24px; }
.foot p { margin: 0 0 4px; }
.foot .ver { margin-top: 8px; }

@media (max-width: 600px) {
  h1 { font-size: 22px; }
  .top-inner { flex-direction: column; align-items: flex-start; }
  .file { padding: 14px; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .drop { min-height: 170px; }
  .file-actions { justify-content: stretch; }
  .file-actions .btn { flex: 1; }
}