:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #1d2a35;
  --muted: #5b6b7b;
  --border: #d5dde6;
  --accent: #0b6bcb;
  --danger: #a12e2e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(180deg, #edf3fb 0%, #f8fafd 45%, #f4f7fb 100%);
  color: var(--text);
  padding: 20px;
}

.topbar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.topbar h1 {
  margin: 0;
  font-size: 28px;
}

.topbar p {
  margin: 6px 0 0;
  color: var(--muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.stat-card h2 {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-card strong {
  display: block;
  margin-top: 6px;
  font-size: 30px;
  color: var(--accent);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 16px;
}

.panel h2 {
  margin-top: 0;
  font-size: 18px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.form-grid textarea {
  min-height: 70px;
  grid-column: 1 / -1;
}

input,
select,
textarea,
button {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
}

textarea {
  resize: vertical;
}

button {
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  border-color: var(--accent);
}

button:hover {
  opacity: 0.92;
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 8px;
  text-align: left;
  vertical-align: top;
  font-size: 13px;
}

th {
  background: #f5f8fc;
}

.inline-form {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.inline-form .mini {
  width: 130px;
}

.item-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.item-list li {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  display: grid;
  gap: 8px;
}

.item-list p {
  margin: 6px 0;
  color: var(--muted);
  font-size: 13px;
}

.item-list small {
  color: var(--muted);
}

@media (max-width: 1120px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  body {
    padding: 12px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .topbar h1 {
    font-size: 24px;
  }
}