:root {
  --accent: #0b79d0;
  --accent-2: #0b5fa8;
  --muted: #6b7280;
  --bg: #f4f6f9;
  --card: #ffffff;
  --success: #16a34a;
  --danger: #ef4444;
  --glass: rgba(255, 255, 255, 0.7);
}
* {
  box-sizing: border-box;
}
body {
  font-family:
    Inter,
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial;
  margin: 0;
  background: linear-gradient(180deg, #f6f8fb 0%, #eef3f8 100%);
  color: #0f172a;
}
.site-header {
  background: transparent;
  padding: 10px 0;
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(6px);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.03);
}
.main-nav {
  display: flex;
  gap: 12px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}
.main-nav a {
  color: var(--accent-2);
  text-decoration: none;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 8px;
}
.container {
  max-width: 1100px;
  margin: 20px auto;
  padding: 0 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  color: #fff;
  padding: 8px 12px;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition:
    transform 0.08s ease,
    box-shadow 0.08s;
}
.btn:active {
  transform: translateY(1px);
}
.btn.secondary {
  background: transparent;
  color: var(--accent-2);
  border: 1px solid rgba(11, 121, 208, 0.08);
}
.table-card {
  padding: 12px;
  border-radius: 12px;
  background: var(--card);
  box-shadow: 0 6px 18px rgba(12, 20, 30, 0.04);
}
table {
  width: 100%;
  border-collapse: collapse;
  background: transparent;
}
th,
td {
  padding: 12px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  text-align: left;
}
.card {
  background: var(--card);
  padding: 14px;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(12, 20, 30, 0.04);
}
.row {
  display: flex;
  gap: 16px;
  align-items: center;
}
.spacer {
  flex: 1;
}
.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: #eef2ff;
  color: var(--accent-2);
}
.muted {
  color: var(--muted);
}
.form-input,
input[type="text"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  background: #fff;
}
.form-row {
  display: flex;
  gap: 12px;
}
.form-row > * {
  flex: 1;
}
.small {
  font-size: 13px;
}

/* toast */
.toast-wrap {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  min-width: 220px;
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  box-shadow: 0 6px 18px rgba(12, 20, 30, 0.08);
}
.toast.success {
  background: var(--success);
}
.toast.error {
  background: var(--danger);
}
.toast.info {
  background: var(--accent-2);
}

/* modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 70;
}
.modal {
  background: var(--card);
  padding: 18px;
  border-radius: 12px;
  max-width: 720px;
  width: 96%;
}

@media (max-width: 600px) {
  .main-nav {
    flex-wrap: wrap;
  }
}