:root {
  --bg: #0f1117;
  --panel: #181b24;
  --panel2: #1f2330;
  --border: #2c3143;
  --text: #e8eaf0;
  --dim: #9aa1b5;
  --accent: #5eead4;
  --accent2: #2dd4bf;
  --err: #f87171;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.wrap { width: min(860px, 92vw); margin: 0 auto; flex: 1; }

.hdr { padding: 40px 0 8px; text-align: center; }
.hdr h1 { font-size: clamp(28px, 5vw, 42px); margin: 0 0 8px; letter-spacing: -0.5px; }
.hdr .arrow { color: var(--accent); }
.sub { color: var(--dim); margin: 0 auto; max-width: 56ch; }
.sub a { color: var(--accent); text-decoration: none; }
.sub a:hover { text-decoration: underline; }

.drop {
  margin: 26px 0 14px;
  border: 2px dashed var(--border);
  border-radius: 14px;
  background: var(--panel);
  padding: 34px 20px;
  text-align: center;
  transition: border-color .15s, background .15s;
}
.drop.over, .drop:hover { border-color: var(--accent2); background: var(--panel2); }
.drop-inner svg { color: var(--accent); }
.drop-inner p { margin: 10px 0 4px; }
.fname { color: var(--dim); font-size: 14px; }
.formats { font-size: 13px; letter-spacing: .2px; }

.linkbtn {
  background: none; border: none; padding: 0;
  color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline;
}

.btn {
  font: inherit; cursor: pointer;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  padding: 9px 18px;
  border-radius: 9px;
  transition: filter .12s;
}
.btn:hover:not(:disabled) { filter: brightness(1.2); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary {
  margin-top: 14px;
  background: linear-gradient(135deg, #14b8a6, #0d9488);
  border-color: transparent;
  color: #04211c;
  font-weight: 700;
  padding: 11px 26px;
}

.status { text-align: center; padding: 6px 0 2px; min-height: 48px; }
.msg { margin: 8px 0 0; color: var(--dim); font-size: 15px; }
.msg.error { color: var(--err); }
.dim { color: var(--dim); }

.bar {
  height: 6px; border-radius: 3px; background: var(--panel2);
  overflow: hidden; margin: 14px auto 0; max-width: 420px;
}
.bar i { display: block; height: 100%; width: 0; background: var(--accent2); transition: width .4s ease; }
.bar.indeterminate i { animation: slide 1.2s ease-in-out infinite alternate; }
@keyframes slide { from { margin-left: 0; } to { margin-left: 60%; } }

.out { margin: 18px 0 30px; }
.outbar { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.outbar .spacer { flex: 1; }
#statline { font-size: 13px; }

pre#result {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  max-height: 60vh;
  overflow: auto;
  font: 13.5px/1.55 ui-monospace, "Cascadia Code", Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.foot {
  border-top: 1px solid var(--border);
  padding: 18px 4vw 26px;
  text-align: center;
  color: var(--dim);
  font-size: 13px;
}
.foot a { color: var(--dim); }