* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f4f5f7;
  color: #1a1a1a;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: #1a1a2e;
  color: #fff;
}

.nav-brand {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  font-size: 1.1rem;
}

.nav-links a {
  color: #cfd2e0;
  text-decoration: none;
  margin-left: 16px;
}

.nav-links a:hover {
  color: #fff;
}

.nav-logout-form {
  display: inline;
  margin-left: 16px;
}

.nav-logout {
  background: none;
  border: 1px solid #4b4fd1;
  color: #cfd2e0;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
}

.nav-logout:hover {
  color: #fff;
  border-color: #fff;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.page-header {
  margin-bottom: 28px;
}

.page-header h1 {
  margin: 0 0 4px;
  font-size: 1.6rem;
}

.page-subtitle {
  margin: 0;
  color: #666a80;
}

.empty-state {
  padding: 40px;
  text-align: center;
  color: #666a80;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.dashboard-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  padding: 20px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.dashboard-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.dashboard-card-body h2 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: #1a1a2e;
}

.dashboard-card-body p {
  margin: 0;
  font-size: 0.9rem;
  color: #666a80;
  line-height: 1.4;
}

.dashboard-card-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #4b4fd1;
  background: #eef0fd;
  padding: 4px 10px;
  border-radius: 999px;
}

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

.data-table th,
.data-table td {
  padding: 8px 12px;
  border-bottom: 1px solid #e5e5e5;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th {
  background: #eceef4;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 340px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.login-card h1 {
  margin: 0 0 4px;
  font-size: 1.4rem;
}

.login-card label {
  margin-top: 16px;
  margin-bottom: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #444861;
}

.login-card input {
  padding: 10px 12px;
  border: 1px solid #d7d9e4;
  border-radius: 6px;
  font-size: 0.95rem;
}

.login-card input:focus {
  outline: none;
  border-color: #4b4fd1;
}

.login-card button {
  margin-top: 24px;
  padding: 10px 12px;
  border: none;
  border-radius: 6px;
  background: #1a1a2e;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.login-card button:hover {
  background: #2a2a45;
}

.login-error {
  margin-top: 12px;
  padding: 8px 12px;
  border-radius: 6px;
  background: #fdecec;
  color: #b3261e;
  font-size: 0.85rem;
}