:root {
  --bg: #0f1218;
  --surface: #171b24;
  --surface-2: #1e232e;
  --border: #2a303c;
  --text: #e6e9ef;
  --muted: #8b93a3;
  --accent: #4f8cff;
  --accent-hover: #3d7bf0;
  --ok: #35c07f;
  --err: #ff6b6b;
  --warn: #f0b429;
  --radius: 10px;
}

* { box-sizing: border-box; }

/* The UA stylesheet applies [hidden] { display: none } at the lowest
   specificity, so any class rule with an explicit `display` silently defeats
   it. Several elements toggled from JS are display: flex, which made
   el.hidden = true a no-op. This has to win over everything. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* ---------------------------------------------------------------- topbar */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--accent), #8f6bff);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-label {
  color: var(--muted);
  font-size: 13px;
}

/* ----------------------------------------------------------------- shell */

.shell {
  max-width: 760px;
  margin: 32px auto 64px;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

h1 { font-size: 20px; margin: 0 0 6px; letter-spacing: -0.01em; }
h2 { font-size: 16px; margin: 0; letter-spacing: -0.01em; }

.muted { color: var(--muted); }
.small { font-size: 13px; }

code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 13px;
}

pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.5;
}

/* ----------------------------------------------------------------- forms */

.stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 18px;
}

.stack label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

input[type="text"],
input[type="password"] {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
}

input:focus-visible,
.dropzone:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* --------------------------------------------------------------- buttons */

.btn {
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 9px 16px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}
.btn-ghost:hover:not(:disabled) { color: var(--text); border-color: #3a4150; }

.actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

/* -------------------------------------------------------------- dropzone */

.dropzone {
  margin-top: 18px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent);
  background: rgba(79, 140, 255, 0.06);
}

.dropzone-inner {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 14px;
}

.file-summary {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
}

.file-name {
  font-weight: 500;
  word-break: break-all;
}

/* -------------------------------------------------------------- progress */

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.progress {
  flex: 1;
  height: 6px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 0.15s ease;
}

/* -------------------------------------------------------- status / lists */

.status, .error, .notice {
  margin: 14px 0 0;
  font-size: 13.5px;
  border-radius: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.status.ok    { color: var(--ok);   border-color: rgba(53, 192, 127, 0.35); }
.status.err,
.error        { color: var(--err);  border-color: rgba(255, 107, 107, 0.35); }
.notice       { color: var(--warn); border-color: rgba(240, 180, 41, 0.35); }

.doc-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.doc-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
}

.doc-main { min-width: 0; }

.doc-title {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.doc-sub { color: var(--muted); font-size: 12.5px; }

.pill {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12.5px;
  color: var(--muted);
}

.badge {
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-pending  { background: rgba(240, 180, 41, 0.14);  color: var(--warn); }
.badge-uploaded { background: rgba(79, 140, 255, 0.14);  color: var(--accent); }
.badge-done     { background: rgba(53, 192, 127, 0.14);  color: var(--ok); }
.badge-failed   { background: rgba(255, 107, 107, 0.14); color: var(--err); }

@media (max-width: 560px) {
  .shell { margin-top: 20px; }
  .card { padding: 18px; }
  .actions { flex-direction: column; }
  .actions .btn { width: 100%; }
}