:root {
  color-scheme: light;
  font-family: "Segoe UI", "Microsoft JhengHei", Arial, sans-serif;
  background: #eef3f8;
  color: #1d2733;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(30, 87, 153, 0.12), rgba(30, 137, 115, 0.08)),
    #eef3f8;
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.panel {
  background: #ffffff;
  border: 1px solid #d8e1ea;
  border-radius: 8px;
  box-shadow: 0 16px 36px rgba(29, 39, 51, 0.08);
  padding: 28px;
}

.heading {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}

h1 {
  font-size: 28px;
  line-height: 1.2;
  margin: 0 0 8px;
  letter-spacing: 0;
}

p {
  margin: 0;
  color: #5c6b7a;
}

.badge {
  flex: 0 0 auto;
  border-radius: 999px;
  background: #e6edf5;
  color: #2c465f;
  padding: 7px 12px;
  font-size: 14px;
  font-weight: 700;
}

.badge[data-state="running"] {
  background: #fff0cf;
  color: #76520b;
}

.badge[data-state="done"] {
  background: #dff6eb;
  color: #12643a;
}

.badge[data-state="error"] {
  background: #ffe2e2;
  color: #9f2424;
}

.dropzone {
  display: grid;
  place-items: center;
  gap: 10px;
  min-height: 240px;
  border: 2px dashed #9bb0c3;
  border-radius: 8px;
  background: #f7fafc;
  text-align: center;
  cursor: pointer;
  padding: 28px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.dropzone.dragging {
  border-color: #227f6c;
  background: #eefaf6;
}

.dropzone input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.dropIcon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: #227f6c;
  color: #ffffff;
  font-size: 32px;
  line-height: 1;
}

.dropzone strong {
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: 18px;
}

.dropzone small {
  color: #718094;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0;
}

button,
.download {
  min-height: 42px;
  border-radius: 6px;
  border: 1px solid transparent;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

button {
  background: #1f6fb2;
  color: #ffffff;
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.download {
  background: #ffffff;
  color: #1f6fb2;
  border-color: #b7c8d8;
}

.download.disabled {
  pointer-events: none;
  color: #8a96a3;
  border-color: #d7e0e8;
  background: #f4f7fa;
}

.status {
  border-top: 1px solid #e2e8f0;
  padding-top: 18px;
}

.statusLine {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 24px;
  color: #33465a;
  font-weight: 700;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid #c8d5e2;
  border-top-color: #1f6fb2;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.hidden {
  display: none;
}

pre {
  min-height: 180px;
  max-height: 340px;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  border-radius: 8px;
  background: #111820;
  color: #d8e5ef;
  padding: 16px;
  font-family: Consolas, "Cascadia Mono", monospace;
  font-size: 13px;
  line-height: 1.5;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 20px, 960px);
    padding: 20px 0;
  }

  .panel {
    padding: 18px;
  }

  .heading {
    flex-direction: column;
  }

  h1 {
    font-size: 24px;
  }

  .actions {
    display: grid;
  }

  button,
  .download {
    width: 100%;
    text-align: center;
  }
}