:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #101828;
  --subtle: #475467;
  --line: #d0d5dd;
  --accent: #0066cc;
  --accent-dark: #0055aa;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Helvetica Neue", sans-serif;
  background: radial-gradient(circle at top, #eaf2ff 0, var(--bg) 45%);
  color: var(--text);
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(720px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 20px rgba(16, 24, 40, 0.06);
}

.card.wide {
  width: min(1080px, 100%);
}

h1 {
  margin: 0 0 10px;
}

.hint {
  margin: 0 0 16px;
  color: var(--subtle);
}

.loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  color: var(--subtle);
}

.spinner {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid #c9d3e6;
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}

.hidden {
  display: none;
}

.row {
  display: flex;
  gap: 10px;
}

.import-row {
  align-items: center;
  margin-top: 10px;
}

.hint-inline {
  color: var(--subtle);
  font-size: 14px;
}

.type-options {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.type-options label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--subtle);
}

input {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 16px;
  padding: 10px 12px;
}

textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 16px;
  padding: 10px 12px;
  resize: vertical;
  font-family: inherit;
}

select {
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 16px;
  padding: 10px 12px;
  background: #fff;
}

button,
.button-link {
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  padding: 10px 14px;
  text-decoration: none;
}

button:hover,
.button-link:hover {
  background: var(--accent-dark);
}

.user-list {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: #f8fafc;
}

.user-chip button {
  font-size: 13px;
  padding: 4px 8px;
}

.user-overflow {
  width: 100%;
}

.user-overflow details {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fafc;
  padding: 8px 10px;
}

.user-overflow summary {
  cursor: pointer;
  color: var(--subtle);
}

.overflow-list {
  margin-top: 8px;
}

.actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.small-links {
  margin-top: 12px;
  display: flex;
  gap: 12px;
}

.small-links a {
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
}

.small-links a:hover {
  text-decoration: underline;
}

.lang-corner {
  position: fixed;
  top: 6px;
  right: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  z-index: 1000;
  box-shadow: 0 4px 14px rgba(16, 24, 40, 0.08);
}

.lang-corner-label {
  color: var(--subtle);
  font-size: 12px;
}

.lang-corner-select {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 4px 8px;
  font-size: 12px;
}

.stack-form {
  display: grid;
  gap: 8px;
}

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 16px 0;
}

.table-wrap {
  overflow-x: auto;
}

.table-wrap.scrollable-rows {
  max-height: 520px;
  overflow-y: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 10px;
  vertical-align: top;
}

td small {
  color: var(--subtle);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 720px) {
  .row {
    flex-direction: column;
  }

  .actions {
    justify-content: stretch;
  }

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

details summary {
  cursor: pointer;
  color: var(--accent);
}

pre {
  margin: 8px 0 0;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--subtle);
}

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