:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-alt: #1d2330;
  --border: #32384a;
  --text: #e8ebf4;
  --muted: #aeb7ca;
  --accent: #6ea8fe;
  --accent-2: #79d5c7;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at top, #1d2435 0%, var(--bg) 52%);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.5;
}

.page-wrap {
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 32px 0 42px;
}
.page-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  margin-bottom: 6px;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}
.subtitle,
.help-text,
.empty-state {
  color: var(--muted);
}
.subtitle {
  margin-bottom: 0;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid #5f8dce;
  border-radius: 9px;
  background: linear-gradient(135deg, #2c4f86, #3f67a2);
  color: #f7fbff;
  cursor: pointer;
  font: inherit;
  font-weight: 650;
  text-decoration: none;
}
.button:hover,
button:hover {
  border-color: #9bc0ff;
  filter: brightness(1.08);
}
.button.secondary {
  border-color: var(--border);
  background: var(--panel-alt);
  color: var(--text);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.dataset-card,
.editor-panel {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(145deg, var(--panel), #141820);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.24);
}
.specialty-section {
  margin-top: 26px;
}
.specialty-heading {
  color: var(--accent-2);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}
.dataset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.dataset-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 7px 10px;
  padding: 10px 11px;
}
.dataset-card h3 {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.3;
}
.dataset-card button {
  min-height: 34px;
  padding: 6px 10px;
  font-size: 0.84rem;
}
.copy-status {
  flex-basis: 100%;
  margin-top: -2px;
  color: var(--accent-2);
  font-size: 0.78rem;
}
.copy-status:empty {
  display: none;
}

.editor-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.6fr);
  gap: 18px;
  margin-top: 25px;
}
.editor-panel {
  padding: 18px;
}
.dataset-list {
  display: grid;
  gap: 8px;
}
.dataset-list button {
  justify-content: flex-start;
  border-color: var(--border);
  background: var(--panel-alt);
  color: var(--text);
  text-align: left;
}
.dataset-list button.selected {
  border-color: var(--accent-2);
  background: #20383b;
}
.editor-panel h2 {
  margin-bottom: 8px;
  font-size: 1.25rem;
}
label {
  display: block;
  margin: 16px 0 6px;
  font-weight: 650;
}
input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 11px;
  background: #101523;
  color: var(--text);
  font: inherit;
}
textarea {
  min-height: 330px;
  resize: vertical;
  line-height: 1.5;
}
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.form-message {
  min-height: 1.5em;
  margin: 12px 0 0;
  color: var(--accent-2);
}
.danger {
  border-color: #a95c6b !important;
  background: #552c37 !important;
}

@media (max-width: 720px) {
  .page-header,
  .intro {
    align-items: stretch;
    flex-direction: column;
  }
  .editor-layout {
    grid-template-columns: 1fr;
  }
  .page-header .actions,
  .intro .actions {
    width: 100%;
  }
  .page-header .button,
  .intro .button {
    flex: 1;
  }
}