/* ─── Welcome onboarding modal (research §1.2) ─── */

#onboarding-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--s-4);
}
.onb-backdrop {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30,58,138,0.95), rgba(15,23,42,0.97));
}
.onb-card {
  position: relative;
  background: var(--c-surface);
  border-radius: var(--r-lg);
  max-width: 720px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  box-shadow: 0 40px 120px rgba(0,0,0,0.5);
  animation: onb-pop var(--t-normal) var(--e-out);
}
@keyframes onb-pop {
  from { transform: scale(0.95) translateY(20px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.onb-head {
  padding: var(--s-6) var(--s-7) var(--s-5);
  text-align: center;
  border-bottom: 1px solid var(--c-border);
  background: linear-gradient(135deg, var(--c-primary-soft), transparent 80%);
}
.onb-logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--c-primary);
  color: #fff;
  font-size: 32px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--s-3);
  box-shadow: 0 8px 20px rgba(30,58,138,0.3);
}
.onb-head h2 {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.onb-subtitle {
  color: var(--c-text-muted);
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  margin: 0;
}

.onb-body {
  padding: var(--s-5) var(--s-7) var(--s-6);
}

.onb-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-3);
}
.onb-option {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: var(--c-surface);
  border: 2px solid var(--c-border);
  border-radius: var(--r-lg);
  cursor: pointer;
  text-align: left;
  transition: border-color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  font-family: inherit;
}
.onb-option:hover {
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30,58,138,0.12);
}
.onb-option.is-selected {
  border-color: var(--c-primary);
  background: var(--c-primary-soft);
}
.onb-option-ico {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}
.onb-option-body { flex: 1; min-width: 0; }
.onb-option-body strong {
  display: block;
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--c-text);
  line-height: 1.2;
  margin-bottom: 2px;
}
.onb-option-body span {
  font-size: var(--fs-xs);
  color: var(--c-text-muted);
}

.onb-footer {
  margin-top: var(--s-5);
  padding-top: var(--s-4);
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-3);
}
.onb-skip-hint {
  font-size: var(--fs-xs);
  color: var(--c-text-light);
}

@media (max-width: 640px) {
  .onb-card { max-height: 100vh; border-radius: var(--r); }
  .onb-head { padding: var(--s-5) var(--s-4) var(--s-4); }
  .onb-body { padding: var(--s-4); }
  .onb-grid { grid-template-columns: 1fr; }
  .onb-footer { flex-direction: column; align-items: stretch; }
  .onb-footer .btn { width: 100%; }
}