:root {
  --bg: #f4f7fb;
  --bg-soft: #eef4fb;
  --card: #ffffff;
  --card-soft: #f8fbff;
  --line: #dbe5f0;
  --line-strong: #c7d4e3;
  --text: #0f172a;
  --text-soft: #334155;
  --muted: #64748b;
  --primary: #0f7ae5;
  --primary-dark: #0b63ba;
  --primary-soft: #e8f2ff;
  --success: #15803d;
  --success-bg: #dcfce7;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --danger: #b91c1c;
  --danger-bg: #fee2e2;
  --info: #1d4ed8;
  --info-bg: #dbeafe;
  --shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.06);
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Inter", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(circle at top left, #f9fbff 0%, var(--bg) 35%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px;
}

.page-head,
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.page-head {
  margin-bottom: 22px;
}

.brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 247, 251, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(219, 229, 240, 0.8);
  margin: -24px -24px 24px -24px;
  padding: 18px 24px;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  min-height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 1px 0 rgba(255,255,255,0.8) inset;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.btn:hover {
  background: #f8fbff;
  border-color: #b8c8da;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary {
  background: linear-gradient(180deg, #1890ff 0%, var(--primary) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 18px rgba(15, 122, 229, 0.18);
}

.btn.primary:hover {
  background: linear-gradient(180deg, #1184ec 0%, var(--primary-dark) 100%);
  color: #fff;
}

.btn.small {
  min-height: 34px;
  padding: 7px 11px;
  font-size: 13px;
  border-radius: 10px;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.card {
  background: linear-gradient(180deg, #ffffff 0%, #fcfdff 100%);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: #cfdceb;
}

.card h1,
.card h2,
.card h3 {
  margin-top: 0;
}

.card h1 {
  font-size: 30px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.card h2 {
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text);
}

.list-item {
  padding: 14px 15px;
  border-radius: 14px;
  border: 1px solid #e3ebf4;
  background: linear-gradient(180deg, #fafcff 0%, #f7fbff 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 7px;
  color: var(--text-soft);
}

input,
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

input::placeholder,
textarea::placeholder {
  color: #94a3b8;
}

input:focus,
textarea:focus,
select:focus {
  border-color: #8ebdf0;
  box-shadow: 0 0 0 4px rgba(15, 122, 229, 0.12);
  background: #ffffff;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.alert {
  padding: 13px 15px;
  border-radius: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
}

.alert.ok {
  background: var(--success-bg);
  color: var(--success);
  border-color: #b8e7c5;
}

.alert.err {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: #f4b8b8;
}

.badge {
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.01em;
}

.badge.success {
  background: var(--success-bg);
  color: var(--success);
}

.badge.warn {
  background: var(--warn-bg);
  color: var(--warn);
}

.badge.danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.badge.info {
  background: var(--info-bg);
  color: var(--info);
}

.stat {
  font-size: 30px;
  font-weight: 800;
  margin-top: 8px;
  letter-spacing: -0.03em;
  color: var(--text);
}

.table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  padding: 13px 14px;
  border-bottom: 1px solid #e6edf5;
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

th {
  font-size: 13px;
  color: var(--muted);
  font-weight: 800;
  background: #f8fbff;
}

tr:hover td {
  background: #fbfdff;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(circle at top, #ffffff 0%, #eef4fb 35%, #f5f7fb 100%);
}

.login-box {
  width: 100%;
  max-width: 430px;
  text-align: center;
}

.login-logo {
  max-width: 150px;
  margin: 0 auto 18px auto;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-box {
  width: 100%;
  max-width: 760px;
  max-height: 82vh;
  overflow-y: auto;
  background: #ffffff;
  border-radius: 22px;
  padding: 22px;
  border: 1px solid var(--line);
  box-shadow: 0 30px 70px rgba(0,0,0,0.18);
  text-align: left;
}

.modal-box h2 {
  margin: 0 0 10px 0;
  font-size: 25px;
  line-height: 1.15;
}

.modal-box h3 {
  margin-top: 18px;
  margin-bottom: 8px;
  font-size: 17px;
}

.modal-box p,
.modal-box li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-soft);
}

.modal-actions {
  margin-top: 22px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.modal-actions .btn {
  flex: 1 1 180px;
}

@media (max-width: 900px) {
  .container {
    padding: 18px;
  }

  .topbar {
    margin: -18px -18px 18px -18px;
    padding: 16px 18px;
  }

  .brand {
    font-size: 22px;
  }

  .card {
    padding: 18px;
  }

  .stat {
    font-size: 26px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 14px;
  }

  .topbar {
    margin: -14px -14px 16px -14px;
    padding: 14px;
  }

  .page-head {
    align-items: flex-start;
  }

  .actions {
    width: 100%;
  }

  .actions .btn {
    flex: 1 1 100%;
  }

  .btn {
    width: 100%;
  }

  .card {
    padding: 16px;
    border-radius: 16px;
  }

  .brand {
    font-size: 20px;
  }

  .modal-overlay {
    padding: 10px;
    align-items: flex-end;
  }

  .modal-box {
    max-width: 100%;
    max-height: 78vh;
    border-radius: 18px 18px 14px 14px;
    padding: 16px;
  }

  .modal-box h2 {
    font-size: 20px;
  }

  .modal-box h3 {
    font-size: 15px;
  }

  .modal-box p,
  .modal-box li {
    font-size: 13px;
    line-height: 1.5;
  }

  .modal-actions {
    flex-direction: column;
  }

  .modal-actions .btn {
    width: 100%;
  }

  .login-logo {
    max-width: 120px;
  }

  .table-wrap {
    border-radius: 12px;
  }
}

@media (max-width: 420px) {
  body {
    font-size: 15px;
  }

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

  .card h2 {
    font-size: 19px;
  }

  .stat {
    font-size: 24px;
  }

  .login-logo {
    max-width: 108px;
  }

  .modal-box {
    padding: 14px;
  }
}