:root {
  color-scheme: light dark;
  --bg: #f6f7f5;
  --panel: #ffffff;
  --panel-soft: #eef3f1;
  --text: #17211d;
  --muted: #66736d;
  --line: #d7ded9;
  --accent: #137c6b;
  --accent-strong: #0b5f52;
  --danger: #a33b3b;
  --ok: #146c43;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.upload-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.upload-fatal {
  margin: 16px auto;
  width: min(1180px, calc(100% - 32px));
  border: 1px solid var(--danger);
  border-radius: 6px;
  background: color-mix(in srgb, var(--panel) 88%, var(--danger) 12%);
  color: var(--danger);
  padding: 12px;
  font-weight: 700;
}

.upload-header {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}

.home-link {
  display: inline-flex;
  min-height: 38px;
  width: fit-content;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--line));
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 82%, var(--panel));
  color: #fff;
  font-weight: 700;
  padding: 8px 12px;
  text-decoration: none;
}

.home-link:hover {
  filter: brightness(0.94);
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lede {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.upload-workspace {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
  gap: 22px;
  align-items: start;
}

.upload-column {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-heading h2 {
  font-size: 22px;
}

.section-heading p,
.limits,
.status-text {
  color: var(--muted);
  font-size: 14px;
}

.picker-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.picker-input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
  pointer-events: none;
}

.picker-button,
.submit-button {
  display: inline-flex;
  min-height: 44px;
  width: 100%;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.picker-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.picker-button--file {
  background: transparent;
  color: var(--accent);
}

.picker-button:focus-visible,
.submit-button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent);
  outline-offset: 2px;
}

.limits {
  margin: 14px 0 18px;
}

.tree-panel {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.tree-title {
  margin-bottom: 10px;
  font-weight: 700;
}

.file-tree {
  max-height: 520px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-soft);
  padding: 12px;
  font-size: 14px;
}

.file-tree.empty {
  color: var(--muted);
}

.file-tree ul {
  margin: 0;
  padding-left: 18px;
}

.file-tree li {
  margin: 4px 0;
}

.relative-paths {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.relative-paths-title {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.relative-path {
  margin: 4px 0;
  word-break: break-word;
}

.upload-form {
  display: grid;
  gap: 18px;
}

fieldset {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 16px 0 0;
  border: 0;
  border-top: 1px solid var(--line);
}

legend {
  padding: 0 0 8px;
  font-weight: 800;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: color-mix(in srgb, var(--panel) 96%, var(--accent) 4%);
  color: var(--text);
  font: inherit;
  font-size: 15px;
  padding: 10px 11px;
}

textarea,
label:has(textarea) {
  grid-column: 1 / -1;
}

.progress-area {
  display: grid;
  gap: 8px;
}

.progress-bar {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.progress-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 180ms ease;
}

.submit-button {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
}

.submit-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.result-box {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
  background: var(--panel-soft);
  color: var(--ok);
  font-weight: 700;
  word-break: break-word;
}

.result-box.error {
  color: var(--danger);
}

.result-box.warning {
  color: #8a5b00;
}

@media (max-width: 860px) {
  .upload-workspace,
  fieldset {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: grid;
    align-items: start;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111512;
    --panel: #191f1b;
    --panel-soft: #121815;
    --text: #eef5f1;
    --muted: #9fb0a8;
    --line: #2e3a34;
    --accent: #4bc4a8;
    --accent-strong: #2aa88f;
    --danger: #ff8f8f;
    --ok: #83e0b3;
  }

  .result-box.warning {
    color: #ffd166;
  }
}