:root {
  color-scheme: dark;
  --bg: #07111f;
  --surface: rgba(8, 15, 28, 0.9);
  --surface-2: #0f172a;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --border: rgba(148, 163, 184, 0.2);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background: radial-gradient(circle at top, #12243d 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 8px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 12px;
  font-weight: 600;
}

.title-wrap h1 {
  margin: 0 0 8px;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.title-wrap p {
  margin: 0;
  color: var(--muted);
  max-width: 700px;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 20px 40px;
  display: grid;
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 15px 45px rgba(2, 8, 23, 0.35);
}

.button-row,
.field-row,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.field-row { margin-top: 14px; }

label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--muted);
  flex: 1;
  min-width: 220px;
}

input,
select,
textarea {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
}

textarea {
  width: 100%;
  min-height: 320px;
  resize: vertical;
  line-height: 1.6;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.button-row .btn,
.action-row .btn {
  flex: 1 1 140px;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white; }
.btn.secondary { background: rgba(56, 189, 248, 0.15); color: var(--accent); }
.btn.ghost { background: rgba(255, 255, 255, 0.06); color: var(--text); }

.status {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(56, 189, 248, 0.1);
  color: #bae6fd;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.status.error {
  background: rgba(248, 113, 113, 0.14);
  color: #fecaca;
  border-color: rgba(248, 113, 113, 0.2);
}

.workspace-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.workspace-header h2 { margin: 0; }

.tips-card ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

@media (max-width: 700px) {
  .workspace-header { flex-direction: column; align-items: flex-start; }
  .container { padding: 16px 14px 30px; }
  .card { padding: 16px; }
  .button-row,
  .action-row,
  .field-row { flex-direction: column; }
  .button-row .btn,
  .action-row .btn {
    width: 100%;
    flex: 1 1 auto;
  }
  label { min-width: 0; }
  textarea { min-height: 260px; }
}