body {
  font-family: system-ui, sans-serif;
  margin: 0;
  background: #f5f6f8;
  color: #1f2937;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: #111827;
  color: white;
}

header a {
  color: white;
}

main {
  padding: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid #e5e7eb;
}

th {
  background: #f3f4f6;
}

.warn {
  color: #b91c1c;
  font-weight: 600;
}

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: #111827;
}

.login-box {
  background: white;
  padding: 32px;
  border-radius: 8px;
  width: 300px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-box label {
  display: flex;
  flex-direction: column;
  font-size: 14px;
  gap: 4px;
}

.login-box input {
  padding: 8px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
}

.login-box button {
  padding: 10px;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.error {
  color: #b91c1c;
  font-size: 14px;
}

.chat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bubble {
  max-width: 60%;
  padding: 10px 14px;
  border-radius: 10px;
  background: white;
}

.bubble.out {
  align-self: flex-end;
  background: #dcfce7;
}

.bubble.in {
  align-self: flex-start;
  background: white;
}

.meta {
  font-size: 11px;
  color: #6b7280;
  margin-bottom: 4px;
}

h2, h3 {
  margin-top: 32px;
}

.periods {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.periods a {
  padding: 6px 14px;
  border-radius: 6px;
  background: white;
  color: #1f2937;
  text-decoration: none;
  font-size: 13px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.periods a.active {
  background: #2563eb;
  color: white;
}

.cards {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.card {
  background: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  padding: 16px 20px;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card strong {
  font-size: 24px;
}

.card span {
  font-size: 13px;
  color: #6b7280;
}