:root {
  color-scheme: light;
  --background-color: #ffffff;
  --surface-color: #e5e7eb;
  --surface-elevated-color: #f8fafc;
  --text-color: #0f172a;
  --muted-text-color: #475569;
  --border-color: #cbd5f5;
  --accent-color: #1d4ed8;
  --link-color: #0f62fe;
  --table-header-bg: #dbeafe;
  --table-row-hover: rgba(29, 78, 216, 0.12);
  --input-background: #ffffff;
  --focus-ring-color: #f97316;
  --error-color: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --background-color: #0b1120;
    --surface-color: #1f2937;
    --surface-elevated-color: #111827;
    --text-color: #f8fafc;
    --muted-text-color: #cbd5f5;
    --border-color: #3f4c68;
    --accent-color: #38bdf8;
    --link-color: #60a5fa;
    --table-header-bg: #1e293b;
    --table-row-hover: rgba(56, 189, 248, 0.18);
    --input-background: #111827;
    --focus-ring-color: #fbbf24;
    --error-color: #f87171;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Tahoma, sans-serif;
  line-height: 1.5;
  background-color: var(--background-color);
  color: var(--text-color);
}

a {
  color: var(--link-color);
}

a:hover,
a:focus {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus-ring-color);
  outline-offset: 2px;
}

nav {
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0 16px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

nav li {
  margin: 0;
}

nav a {
  display: inline-block;
  padding: 12px 4px;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
}

nav a[aria-current="page"] {
  border-bottom: 3px solid var(--accent-color);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.filters {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

select,
input[type="text"] {
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--input-background);
  color: var(--text-color);
  font-size: 15px;
  min-width: 160px;
}

select:focus,
input[type="text"]:focus {
  border-color: var(--accent-color);
}

#loading {
  margin: 24px 0;
  font-size: 18px;
  color: var(--muted-text-color);
}

#error {
  color: var(--error-color);
}

.error {
  color: var(--error-color);
}

#resultsInfo {
  margin-bottom: 12px;
  font-weight: 600;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--surface-elevated-color);
  border: 1px solid var(--border-color);
}

.data-table th,
.data-table td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
}

.data-table th {
  background-color: var(--table-header-bg);
}

.data-table tbody tr:hover {
  background-color: var(--table-row-hover);
}

.data-table th[scope="row"] {
  background-color: var(--surface-color);
  font-weight: 700;
}

.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
  .filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
  }

  select,
  input[type="text"] {
    min-height: 44px;
    font-size: 16px;
  }

  .data-table th,
  .data-table td {
    font-size: 14px;
    padding: 8px;
  }
}