:root {
  --paper: #f3f5f4;
  --surface: #ffffff;
  --ink: #1c2a33;
  --muted: #5b6a73;
  --line: #d8dfe2;
  --accent: #1d6a8c;
  --accent-dark: #16536e;
  --accent-soft: #e1eef4;
  --amber-soft: #f1e8d3;
  --amber-ink: #6b4d12;
  --danger: #a33b2f;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

.page { max-width: 980px; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }

h1 { margin: 0; font-size: 1.75rem; font-weight: 650; letter-spacing: -0.01em; }
.sub { margin: 0.35rem 0 0; color: var(--muted); max-width: 60ch; }

.top {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 1rem; margin-bottom: 1.75rem;
}

/* Buttons and links */
.btn {
  display: inline-block; padding: 0.5rem 0.95rem; border: 0; border-radius: var(--radius);
  background: var(--accent); color: #fff; font: inherit; font-weight: 600;
  text-decoration: none; cursor: pointer;
}
.btn:hover { background: var(--accent-dark); }
.link {
  background: none; border: 0; padding: 0.25rem 0; font: inherit;
  color: var(--accent); cursor: pointer; text-decoration: underline;
}
:focus-visible { outline: 3px solid #7fb4cc; outline-offset: 2px; }

/* Filters */
.filters {
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; align-items: center;
  padding: 1rem 1.1rem; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
}
.group { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; }
.group-label { color: var(--muted); font-size: 0.9rem; margin-right: 0.2rem; }
.chip {
  padding: 0.3rem 0.8rem; border: 1px solid var(--line); border-radius: 999px;
  background: var(--surface); color: var(--ink); font: inherit; font-size: 0.92rem; cursor: pointer;
}
.chip:hover { border-color: var(--accent); }
.chip.is-on { background: var(--accent); border-color: var(--accent); color: #fff; }
#q {
  flex: 1 1 14rem; min-width: 12rem; padding: 0.45rem 0.7rem;
  border: 1px solid var(--line); border-radius: var(--radius); font: inherit;
}

.count { margin: 1rem 0 0.5rem; color: var(--muted); font-size: 0.92rem; }

/* Table */
.table-wrap {
  overflow-x: auto; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
}
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.8rem 1rem; text-align: left; vertical-align: middle; }
thead th { border-bottom: 1px solid var(--line); font-size: 0.9rem; font-weight: 600; color: var(--muted); }
th button {
  background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer;
}
th button:hover { color: var(--ink); }
th[aria-sort="ascending"] button::after { content: " \2191"; }
th[aria-sort="descending"] button::after { content: " \2193"; }
tbody tr + tr td { border-top: 1px solid var(--line); }
tbody tr[hidden] { display: none; }
tbody tr:hover { background: #f8fafb; }
.date { font-weight: 600; white-space: nowrap; font-variant-numeric: tabular-nums; }
.note { color: var(--muted); }
.size-col { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.act { text-align: right; }

.tag {
  display: inline-block; padding: 0.1rem 0.6rem; border-radius: 999px;
  font-size: 0.85rem; font-weight: 600; background: #e8ecee; color: var(--ink);
}
.tag-mri { background: var(--accent-soft); color: var(--accent-dark); }
.tag-xray { background: var(--amber-soft); color: var(--amber-ink); }

.empty { margin: 2rem 0; color: var(--muted); text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* Login */
.login {
  max-width: 24rem; margin: 12vh auto 0; padding: 2rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
.login h1 { font-size: 1.5rem; }
.login form { margin-top: 1.5rem; display: grid; gap: 0.6rem; }
.login label { font-weight: 600; }
.login input {
  padding: 0.6rem 0.75rem; border: 1px solid var(--line); border-radius: var(--radius); font: inherit;
}
.login .btn { margin-top: 0.5rem; }
.error { margin: 0; color: var(--danger); }

@media (max-width: 640px) {
  .size-col { display: none; }
  th, td { padding: 0.7rem 0.6rem; }
  .top { flex-direction: column; }
}