:root {
  --app-bg: #edf2f7;
  --app-surface: #ffffff;
  --app-surface-soft: rgba(255, 255, 255, 0.82);
  --app-ink: #0f172a;
  --app-muted: #64748b;
  --app-brand-1: #0f766e;
  --app-brand-2: #2563eb;
  --app-brand-3: #7c3aed;
  --app-radius: 1.25rem;
}

html, body {
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.10), transparent 22%),
    linear-gradient(180deg, #f8fafc 0%, var(--app-bg) 100%);
  color: var(--app-ink);
}

.app-shell {
  min-height: 100vh;
}

.app-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 45%, #0f766e 100%);
  color: #fff;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.20);
}

.app-kicker {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.72rem;
  opacity: 0.82;
  margin-bottom: 0.35rem;
}

.app-title {
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.app-subtitle {
  color: rgba(255, 255, 255, 0.82);
  max-width: 44rem;
}

.app-toplink {
  border-radius: 999px;
}

.app-action-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--app-radius);
  background: var(--app-surface);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
  min-height: 100%;
}

.app-action-card:hover,
.app-action-card:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12) !important;
}

.app-action-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 8px;
  background: linear-gradient(180deg, var(--app-brand-2), var(--app-brand-1));
}

.tone-primary::before { background: linear-gradient(180deg, #2563eb, #0f766e); }
.tone-success::before { background: linear-gradient(180deg, #16a34a, #0f766e); }
.tone-warning::before { background: linear-gradient(180deg, #f59e0b, #ea580c); }
.tone-info::before { background: linear-gradient(180deg, #0ea5e9, #2563eb); }
.tone-danger::before { background: linear-gradient(180deg, #ef4444, #be123c); }
.tone-secondary::before { background: linear-gradient(180deg, #475569, #0f172a); }

.app-card-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: var(--app-muted);
  margin-bottom: 0.25rem;
}

.app-card-arrow {
  color: var(--app-brand-2);
  font-size: 2rem;
  line-height: 1;
  font-weight: 300;
}

.app-meta-badge {
  color: #0f172a !important;
}

.app-panel {
  background: var(--app-surface-soft);
  backdrop-filter: blur(10px);
  border-radius: var(--app-radius);
}

.form-control,
.form-select,
.btn {
  border-radius: 0.95rem;
}

.form-label {
  font-weight: 600;
  color: #1e293b;
}

.help-text {
  color: var(--app-muted);
  font-size: 0.92rem;
}

.position-map {
  overflow: hidden;
  border-radius: 1rem;
}

.position-map td {
  width: 33.333%;
  min-width: 6rem;
  text-align: center;
  vertical-align: middle;
  padding: 1rem 0.5rem;
  background: rgba(255, 255, 255, 0.8);
}

.position-cell.selected {
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.18), rgba(34, 197, 94, 0.10));
  box-shadow: inset 0 0 0 2px rgba(34, 197, 94, 0.55);
}

.cell-code {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.cell-label {
  font-size: 0.78rem;
  color: var(--app-muted);
}

.summary-grid {
  display: grid;
  gap: 0.75rem;
}

.summary-item {
  background: rgba(15, 23, 42, 0.03);
  border-radius: 1rem;
  padding: 0.85rem 1rem;
}

.summary-item .label {
  display: block;
  color: var(--app-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}

.summary-item .value {
  font-weight: 700;
  font-size: 1rem;
  word-break: break-word;
}

.table-modern {
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border-radius: 1rem;
}

.table-modern thead th {
  background: #0f172a;
  color: #fff;
  border: 0;
}

.table-modern tbody tr:nth-child(even) {
  background: rgba(37, 99, 235, 0.04);
}

.badge-soft {
  background: rgba(37, 99, 235, 0.10);
  color: #1d4ed8;
}

@media (max-width: 575.98px) {
  .app-title {
    font-size: 1.9rem;
  }

  .app-hero .btn {
    width: 100%;
    margin-top: 0.35rem;
  }

  .position-map td {
    padding: 0.85rem 0.25rem;
  }
}