:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --panel: #fffdf9;
  --panel-strong: #ffffff;
  --text: #1f1a17;
  --muted: #75685d;
  --border: #d8cec3;
  --accent: #1f6f78;
  --accent-soft: #dff0f2;
  --danger: #9f2f2f;
  --danger-soft: #fbe4e2;
  --success: #256a3c;
  --success-soft: #dff4e5;
  --shadow: 0 18px 50px rgba(58, 43, 30, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(31, 111, 120, 0.12), transparent 32%),
    linear-gradient(180deg, #f8f6f1 0%, var(--bg) 100%);
}

a {
  color: inherit;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(216, 206, 195, 0.8);
  background: rgba(248, 246, 241, 0.88);
  backdrop-filter: blur(12px);
}

.nav-brand {
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.04em;
}

.nav-offset {
  padding: 2rem 1rem 4rem;
}

.footer {
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
}

.hero,
.admin-shell {
  width: min(1160px, 100%);
  margin: 0 auto;
}

.hero {
  padding: 3rem 1rem;
}

.admin-header,
.section-heading,
.card-header,
.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.admin-header {
  margin-bottom: 1.5rem;
}

.admin-intro,
.section-heading p,
.config-meta,
.result-meta {
  margin: 0;
  color: var(--muted);
}

.admin-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.secondary-link {
  text-decoration: none;
  color: var(--muted);
}

.admin-section {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.admin-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.admin-form {
  display: grid;
  gap: 1rem;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.95rem;
}

label span {
  font-weight: 600;
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel-strong);
  color: var(--text);
}

textarea {
  resize: vertical;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-top: 1.85rem;
}

.checkbox-field input {
  width: auto;
  margin: 0;
}

button {
  padding: 0.7rem 1rem;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  cursor: pointer;
}

.button-danger {
  background: var(--danger);
}

.status-pill,
.flash {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
}

.status-pill {
  padding: 0.35rem 0.75rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
}

.status-disabled {
  background: #ece7e2;
  color: var(--muted);
}

.flash {
  margin: 1rem 0 0;
  padding: 0.85rem 1rem;
  font-weight: 600;
}

.inline-flash {
  margin-top: 0;
}

.flash-error {
  background: var(--danger-soft);
  color: var(--danger);
}

.flash-success {
  background: var(--success-soft);
  color: var(--success);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.code-block {
  overflow-x: auto;
  margin: 0;
  padding: 1rem;
  border-radius: 14px;
  background: #f7f3ed;
  border: 1px solid rgba(216, 206, 195, 0.85);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.88rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.chunk-list {
  display: grid;
  gap: 1rem;
}

.chunk-card {
  display: grid;
  gap: 0.85rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--panel-strong);
}

.chunk-card h4 {
  margin: 0;
}

.embedding-preview {
  display: grid;
  gap: 0.35rem;
}

.embedding-preview code {
  overflow-x: auto;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.85rem;
}

@media (max-width: 720px) {
  .nav-offset {
    padding: 1.25rem 0.75rem 3rem;
  }

  .admin-header,
  .section-heading,
  .card-header,
  .form-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .form-actions {
    width: 100%;
  }

  .admin-links,
  .result-grid {
    width: 100%;
  }

  .admin-links,
  .result-grid {
    display: grid;
  }
}