:root {
  --bg: #f6f7f9; --card: #ffffff; --ink: #1b1f24; --muted: #5d6673; --line: #dfe3e8;
  --accent: #1f8a4c; --accent-ink: #ffffff; --warn: #8a5a00; --error: #b3261e;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111418; --card: #1a1e24; --ink: #e8ebef; --muted: #9aa4b1; --line: #2c323a; --accent: #2fb06a; --accent-ink: #06210f; --warn: #e0b04a; --error: #ff8a80; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 880px; margin: 0 auto; padding: 32px 16px 48px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
.lead { color: var(--muted); margin: 0 0 24px; }

.drop { display: grid; place-items: center; gap: 4px; padding: 32px 16px; border: 2px dashed var(--line); border-radius: 14px; background: var(--card); cursor: pointer; text-align: center; transition: border-color .15s; }
.drop:hover, .drop.over, .drop:focus-within { border-color: var(--accent); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop .big { font-weight: 600; font-size: 1.1rem; }
.drop .small { color: var(--muted); font-size: .9rem; }

.status { min-height: 1.5em; color: var(--muted); font-size: .92rem; margin: 16px 0; }
.status strong { color: var(--accent); }
.status.error, .err { color: var(--error); }
.warn { color: var(--warn); }

.step { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin: 0 0 16px; }
.step header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.step h2 { font-size: 1.05rem; margin: 0; }
.step .n { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 700; font-size: .9rem; flex: none; }
.step.done { opacity: .7; }
.step.done .n { background: var(--muted); }

.text { white-space: pre-wrap; word-break: break-word; max-height: 260px; overflow: auto; background: var(--bg); border-radius: 10px; padding: 12px; margin: 0; font: .88rem/1.45 ui-monospace, "Cascadia Mono", Consolas, monospace; }
.thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.thumbs a { display: block; min-width: 0; }
.thumbs img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.files { margin: 0; padding-left: 20px; }
.files li { margin: 4px 0; overflow-wrap: anywhere; }
.files span { color: var(--muted); font-size: .85rem; }
a { color: var(--accent); }

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
button { font: inherit; font-weight: 600; padding: 10px 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.sendall { background: var(--card); border: 1px solid var(--accent); border-radius: 14px; padding: 16px; margin: 0 0 16px; }
button.big { width: 100%; padding: 14px 18px; font-size: 1.05rem; }
.note { color: var(--muted); font-size: .88rem; margin: 10px 0 0; }
.note.ok { color: var(--accent); }
.note.err { color: var(--error); }

.helper { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; margin: 24px 0 0; }
.helper summary { cursor: pointer; font-weight: 600; }
.helper ol { padding-left: 20px; }
.helper li { margin: 8px 0; }
.helper code { background: var(--bg); padding: 1px 5px; border-radius: 5px; font-size: .9em; }

footer { color: var(--muted); font-size: .85rem; margin-top: 32px; }