:root {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: #0f172a;
  background-color: #f1f5f9;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #e0f2fe, #f8fafc 55%);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.card {
  background: #fff;
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
}

h1 {
  margin-top: 0;
  letter-spacing: -0.025em;
}

form {
  display: grid;
  gap: 16px;
}

label {
  font-weight: 600;
  font-size: 0.9rem;
}

input, select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #cbd5f5;
  font-size: 1rem;
}

button {
  padding: 12px 16px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(120deg, #2563eb, #7c3aed);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.35);
}

.notice {
  padding: 12px 16px;
  border-radius: 12px;
  background: #ecfccb;
  color: #3f6212;
  font-size: 0.95rem;
}

.error {
  background: #fee2e2;
  color: #991b1b;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 12px 10px;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.95rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge.success {
  background: rgba(16, 185, 129, 0.16);
  color: #065f46;
}

.badge.warning {
  background: rgba(245, 158, 11, 0.16);
  color: #92400e;
}

nav {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

nav a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}