:root {
  --bg: #f6f8fb;
  --paper: #ffffff;
  --ink: #13213a;
  --muted: #5f6f8a;
  --line: #d9e0ef;
  --brand: #1e4db7;
  --brand-2: #0f8f8f;
  --danger: #b02a37;
  --ok: #137333;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Times New Roman", Times, serif;
  color: var(--ink);
  background:
    radial-gradient(1100px 450px at 15% -10%, #dbe7ff 0%, transparent 70%),
    radial-gradient(800px 400px at 95% 5%, #d6f3f3 0%, transparent 70%),
    var(--bg);
}

.page {
  width: min(1400px, 100% - 32px);
  margin: 24px auto 56px;
  display: grid;
  gap: 16px;
}

.hero {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, #eef3ff 0%, #ffffff 60%, #f2fbfb 100%);
}

.hero-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 2.4vw, 2.15rem);
}

.hero p {
  margin: 0;
  color: var(--muted);
}

.admin-link {
  white-space: nowrap;
  border: 1px solid #89a2d7;
  color: #20345f;
  padding: 8px 14px;
  border-radius: 10px;
  text-decoration: none;
  background: #fff;
  font-weight: 600;
}

.hidden {
  display: none !important;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 1.4rem;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

#lastSaved {
  color: var(--muted);
  font-size: 0.92rem;
}

.grid {
  display: grid;
  gap: 12px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid .full {
  grid-column: 1 / -1;
}

label {
  display: grid;
  gap: 6px;
  color: #1f2e4a;
  font-size: 0.98rem;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid #c6d0e5;
  border-radius: 10px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: #fff;
}

textarea {
  resize: vertical;
  line-height: 1.45;
}

input:focus,
textarea:focus,
button:focus-visible,
select:focus {
  outline: 2px solid #5b86e5;
  outline-offset: 2px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.btn {
  appearance: none;
  border: 1px solid #274ea6;
  background: #e8f0ff;
  color: #153068;
  border-radius: 10px;
  padding: 9px 14px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: 150ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(0.97);
}

.btn:disabled {
  opacity: 0.6;
  cursor: wait;
  transform: none;
}

.btn.primary {
  background: linear-gradient(120deg, #1e4db7 0%, #0f8f8f 100%);
  color: #fff;
  border-color: transparent;
}

.btn.secondary {
  background: #fff;
  border-color: #9eb0d7;
  color: #20345f;
}

.sections {
  display: grid;
  gap: 16px;
}

.chapter-block {
  border: 1px solid #cad6ef;
  border-radius: 14px;
  padding: 12px;
  background: #fcfdff;
}

.chapter-title {
  margin: 0 0 10px;
  font-size: 1.2rem;
  color: #182b52;
}

.section-card {
  border: 1px dashed #b4c2df;
  border-radius: 14px;
  padding: 14px;
  background: #fbfcff;
  margin-bottom: 12px;
}

.section-card:last-child {
  margin-bottom: 0;
}

.section-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.section-title {
  margin: 0;
  font-size: 1.15rem;
}

.section-subtitle {
  margin: 3px 0 0;
  color: #5e6f8d;
  font-size: 0.9rem;
}

.status {
  border: 1px solid #a4b4d8;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.84rem;
  color: #334b7d;
  background: #eef3ff;
}

.status.running {
  border-color: #caa256;
  color: #805400;
  background: #fff7e8;
}

.status.done {
  border-color: #89c99b;
  color: #145f2a;
  background: #ecf8ef;
}

.status.warn {
  border-color: #d18d94;
  color: #81242e;
  background: #fdeff1;
}

.two-col {
  margin-top: 10px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 12px;
}

.two-col h4,
.qudit-box h4 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.references {
  margin: 0;
  padding-left: 22px;
  color: #1f3157;
}

.references li {
  margin-bottom: 6px;
  line-height: 1.35;
}

.figures {
  display: grid;
  gap: 8px;
}

.figure-item {
  border: 1px solid #d6dfef;
  border-radius: 10px;
  background: #fff;
  padding: 8px;
}

.figure-item img {
  width: 100%;
  max-height: 180px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid #dae2f1;
}

.figure-item .caption {
  margin-top: 6px;
  font-size: 0.92rem;
  color: #22365f;
}

.figure-item a {
  color: #1e4db7;
  text-decoration: none;
  word-break: break-all;
  font-size: 0.88rem;
}

.qudit-box {
  margin-top: 12px;
  border-top: 1px solid #dbe2f0;
  padding-top: 10px;
}

.qudit-summary {
  margin: 0 0 8px;
  color: #22365d;
}

.qudit-issues {
  margin: 0 0 10px;
  padding-left: 20px;
  color: #7a2430;
}

.qudit-rewrite {
  margin-top: 8px;
}

.refs {
  min-height: 36px;
  color: #32476e;
}

.refs .empty {
  color: var(--muted);
  font-style: italic;
}

.refs ol {
  margin: 0;
  padding-left: 22px;
}

.refs li {
  margin-bottom: 8px;
  line-height: 1.4;
}

.sidebar-card p {
  margin: 0 0 8px;
  color: #2f4268;
}

@media (max-width: 1024px) {
  .grid.two,
  .two-col {
    grid-template-columns: 1fr;
  }

  .hero-head {
    flex-direction: column;
  }
}

@media (max-width: 760px) {
  .page {
    width: min(1400px, 100% - 18px);
    margin-top: 16px;
  }
}