:root {
  --ink: #1f1f1f;
  --muted: #6f6e69;
  --line: #e6e5df;
  --page: #f6f5f1;
  --card: #ffffff;
  --accent: #2a78d6;
  --note-bg: #eef4fc;
  --note-border: #b7d1f3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.45;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

header h1 {
  margin: 0 0 20px;
  font-size: 1.8rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 1rem;
  font-weight: 600;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.control-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.filters-column {
  width: calc(100% / 3);
  min-width: 280px;
}

.note {
  background: var(--note-bg);
  border-color: var(--note-border);
  border-left: 4px solid var(--accent);
}

.note-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.note-title::before {
  content: "i";
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  font-style: italic;
  font-family: Georgia, serif;
}

.note-text {
  margin: 0;
  font-size: 0.9rem;
}

.filters-column .controls {
  grid-template-columns: 1fr;
  gap: 12px;
}

.row-third-two-thirds {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 16px;
  align-items: start;
}

.row-third-two-thirds > * {
  width: auto;
  min-width: 0;
}

.row-third-two-thirds > .card,
.row-third-two-thirds > .filters-column > .card:last-child {
  margin-bottom: 0;
}

@media (max-width: 700px) {
  .filters-column {
    width: 100%;
    min-width: 0;
  }

  .row-third-two-thirds {
    grid-template-columns: 1fr;
  }
}

.section {
  margin-top: 28px;
}

.section-controls {
  margin-bottom: 12px;
  max-width: 320px;
}

.tabs {
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.tabs .tab,
.tabs .tab:last-child,
.tabs .tab:hover {
  flex: 0 0 auto;
  padding: 10px 18px !important;
  border: none !important;
  border-bottom: 3px solid transparent !important;
  background: transparent !important;
  color: var(--muted);
  font-weight: 600;
}

.tabs .tab:hover {
  color: var(--ink);
}

.tabs .tab.tab--selected,
.tabs .tab:last-child.tab--selected {
  border-bottom: 3px solid var(--accent) !important;
  color: var(--ink);
}