:root{color-scheme:light dark;--bg:#fff;--fg:#14181a;--muted:#5b676b;--line:#d5dcde;--accent:#0f766e;--accent-fg:#fff;--error:#b42318}
@media (prefers-color-scheme:dark){:root{--bg:#111517;--fg:#e8eef0;--muted:#9aa8ac;--line:#2a3336;--accent:#2dd4bf;--accent-fg:#06201d;--error:#fda29b}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 16px 64px}
h1{margin:0 0 8px;font-size:28px}h2{margin:0;font-size:18px}
.lead{color:var(--muted);margin:0 0 24px}
section{margin-bottom:24px}
label{display:block;margin-bottom:8px;font-weight:600}
input[type=file]{display:block;width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;background:transparent;color:inherit;margin-bottom:12px}
button{font:inherit;padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:transparent;color:inherit;cursor:pointer}
button:hover:not(:disabled){border-color:var(--accent)}
button:disabled{opacity:.5;cursor:not-allowed}
#download-all{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
#status{margin:12px 0 0;min-height:1.5em;color:var(--muted)}
#status.error{color:var(--error)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;flex-wrap:wrap}
ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
li{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;flex-wrap:wrap}
li .name{flex:1;min-width:0;overflow-wrap:anywhere}
li .len{color:var(--muted);font-size:14px}
.foot{color:var(--muted);font-size:14px}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:12px}
h2{margin-bottom:12px}
li .wave{width:96px;height:28px;flex:none}
@media (max-width:480px){li .wave{order:5;width:100%;height:28px}}
select{font:inherit;padding:8px;border-radius:8px;border:1px solid var(--line);background:transparent;color:inherit}
li:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
li input[type=checkbox]{width:20px;height:20px;flex:none}