:root {
  --text: #1a1a1a;
  --muted: #5f6368;
  --border: #c9c9c9;
  --header: #eceff1;
  --accent: #1a5fb4;
  --error: #b3261e;
  --background: #ffffff;
  --panel: #f6f7f8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--background);
  line-height: 1.45;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.topbar h1 { margin: 0; font-size: 20px; }
.brand { display: flex; align-items: center; gap: 12px; }
.logo { height: 40px; width: auto; max-width: 180px; object-fit: contain; }
.session { font-size: 14px; color: var(--muted); }

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

.card {
  max-width: 520px;
  margin: 48px auto;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.card h2 { margin-top: 0; }

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

button {
  font: inherit;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  cursor: pointer;
}
button.link { border: none; background: none; color: var(--accent); padding: 0 0 0 8px; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  padding: 12px;
  background: var(--panel);
  border-radius: 8px;
}
.toolbar label { display: flex; flex-direction: column; font-size: 13px; color: var(--muted); gap: 4px; }
.toolbar select, .toolbar input {
  font: inherit;
  color: var(--text);
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 180px;
  max-width: 100%;
}
.toolbar .buttons { display: flex; gap: 8px; }

h2.category { font-size: 18px; margin: 28px 0 8px; }

details { margin: 8px 0 16px; }
summary { cursor: pointer; font-weight: 600; padding: 4px 0; }

.table_wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; margin-top: 6px; }
th, td { border: 1px solid var(--border); padding: 5px 8px; text-align: left; vertical-align: top; }
th { background: var(--header); white-space: nowrap; }
td.center, th.center { text-align: center; }

.footer { max-width: 1200px; margin: 32px auto; padding: 0 16px; font-size: 13px; color: var(--muted); }
.footer a, a { color: var(--accent); }

@media (max-width: 600px) {
  .toolbar label, .toolbar select, .toolbar input { width: 100%; min-width: 0; }
}