:root {
  --bg: #eef4fb;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --border: #d7e2ef;
  --text: #12263a;
  --muted: #556676;
  --primary: #2563eb;
  --primary-strong: #1d4ed8;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --radius: 18px;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #eef4fb 0%, #f8fbff 100%);
  min-height: 100vh;
  color: var(--text);
}

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

a:hover {
  color: var(--primary-strong);
  text-decoration: underline;
}

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 2.5vw, 2.4rem);
  letter-spacing: -0.04em;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  margin-bottom: 16px;
}

.topbar-brand a {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

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

.topbar-nav a {
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 12px;
  background: transparent;
  transition: color .18s ease, background-color .18s ease;
}

.topbar-nav a:hover {
  color: var(--text);
  background: rgba(37, 99, 235, 0.08);
}

@media (max-width: 760px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-nav {
    justify-content: flex-start;
  }
}

.page-header p {
  margin: 0;
  color: var(--muted);
  max-width: 680px;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.form-section {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.form-section:last-of-type {
  border-bottom: none;
  margin-bottom: 28px;
  padding-bottom: 0;
}

.form-section-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 16px 0;
}

.form-section-subtitle {
  font-size: 0.88rem;
  color: var(--muted);
  margin: 2px 0 0 0;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-start;
  padding-top: 8px;
}

.form-actions .button {
  min-width: 140px;
}

.form-actions .button-primary {
  flex: 1;
  min-width: 180px;
}

@media (max-width: 480px) {
  .form-actions {
    flex-direction: column;
  }

  .form-actions .button {
    width: 100%;
  }
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-group label {
  font-size: 0.95rem;
  color: var(--muted);
}

input[type="text"], input[type="email"], input[type="password"], input[type="date"], select, textarea {
  width: 100%;
  min-height: 48px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  font-size: 1rem;
  transition: border-color .18s ease, box-shadow .18s ease;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

button, input[type="submit"], .button {
  border: none;
  border-radius: 14px;
  padding: 14px 20px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .18s ease, background-color .18s ease, box-shadow .18s ease;
}

button:hover, input[type="submit"]:hover, .button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background-color: var(--primary);
  color: #fff;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.14);
}

.button-secondary {
  background-color: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.button-secondary:hover {
  background-color: #f5f8ff;
}

.table-card {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

th, td {
  text-align: left;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

th {
  background: #f8fbff;
  color: var(--muted);
  font-size: .88rem;
  letter-spacing: .05em;
  text-transform: uppercase;
}

tbody tr:hover {
  background: #f5f8ff;
}

.metric-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
  margin-bottom: 24px;
}

.metric-card {
  padding: 24px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.08), #fff);
  border: 1px solid rgba(37, 99, 235, .14);
}

.metric-card .metric-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.metric-card .metric-value {
  margin: 12px 0 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
}

.page-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
}

.page-link:hover {
  text-decoration: none;
}

.subtle-text {
  color: var(--muted);
}

@media (max-width: 660px) {
  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }
}