/* Single-page onboarding, using the shared evening palette and family artwork. */
.bth-onboarding { position: relative; min-height: 100dvh; background: var(--bth-paper); }
.bth-onboarding-main { position: relative; z-index: 1; width: min(100%, 560px); margin: auto; padding: calc(20px + env(safe-area-inset-top, 0px)) max(20px, env(safe-area-inset-right, 0px)) calc(28px + env(safe-area-inset-bottom, 0px)) max(20px, env(safe-area-inset-left, 0px)); }
.bth-onboarding-header .bth-kit-brand { margin-bottom: 28px; }
.bth-onboarding-header h1 { margin: 0 0 10px; font-size: 34px; line-height: 1.15; letter-spacing: -.025em; }
.bth-onboarding-header p { margin: 0 0 24px; color: var(--bth-muted); font-size: 15px; }
.bth-onboarding-fields { border: 0; padding: 0; margin: 0; min-width: 0; }
.bth-onboarding-child { padding: 16px; margin-bottom: 12px; border: 1px solid var(--bth-line); border-radius: 16px; background: var(--bth-surface); }
.bth-onboarding-child-top { display: flex; align-items: center; gap: 12px; }
.bth-onboarding-avatar { flex: 0 0 64px; display: grid; justify-items: center; padding: 0; border: 0; background: transparent; color: var(--bth-plum); cursor: pointer; }
.bth-onboarding-avatar .bth-family-portrait { width: 52px; height: 52px; }
.bth-onboarding-avatar span { font-size: 12px; margin-top: 3px; }
.bth-onboarding-field { flex: 1; min-width: 0; }
.bth-onboarding label { display: block; font-size: 14px; font-weight: 600; }
.bth-onboarding-field label { margin-bottom: 6px; }
.bth-onboarding :is(input, select) { min-width: 0; width: 100%; min-height: 48px; padding: 10px 12px; border: 1px solid var(--bth-line-strong); border-radius: 10px; background: var(--bth-paper); color: var(--bth-ink); font: inherit; font-size: 16px; }
.bth-onboarding :is(input, select)[aria-invalid="true"] { border-color: var(--bth-danger); }
.bth-onboarding :is(button, input, select, summary) { touch-action: manipulation; scroll-margin-block: 24px; }
.bth-onboarding :is(button, input, select):disabled { opacity: .55; cursor: not-allowed; }
.bth-onboarding :is(button, summary, label, h1, p) { overflow-wrap: anywhere; }
.bth-onboarding-remove { display: flex; align-items: center; justify-content: center; flex: 0 0 48px; min-height: 48px; border: 0; background: transparent; color: var(--bth-muted); cursor: pointer; }
.bth-onboarding-remove svg { width: 20px; }
.bth-onboarding-age { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 20px 0 12px; }
.bth-onboarding-age select { width: auto; max-width: 72%; }
.bth-onboarding-gender { border-top: 1px solid var(--bth-line); }
.bth-onboarding-gender summary { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 48px; list-style: none; cursor: pointer; font-size: 13px; color: var(--bth-muted); }
.bth-onboarding-gender summary::-webkit-details-marker { display: none; }
.bth-onboarding-gender summary svg { flex: 0 0 18px; width: 18px; }
.bth-onboarding-gender[open] summary svg { transform: rotate(180deg); }
.bth-onboarding-gender label { margin: 0 0 10px; font-size: 13px; font-weight: 400; color: var(--bth-muted); }
.bth-onboarding-avatar-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 14px; }
.bth-onboarding-avatar-heading button { display: grid; place-items: center; min-width: 48px; min-height: 48px; border: 0; background: transparent; color: var(--bth-muted); cursor: pointer; }
.bth-onboarding-avatar-options { display: grid; grid-template-columns: repeat(4, minmax(48px, 1fr)); gap: 8px; }
.bth-onboarding-avatar-options button { display: grid; place-items: center; min-height: 56px; padding: 4px; border: 1px solid var(--bth-line); border-radius: 12px; background: var(--bth-paper); cursor: pointer; }
.bth-onboarding-avatar-options [aria-pressed="true"] { border-color: var(--bth-plum); box-shadow: inset 0 0 0 1px var(--bth-plum); background: var(--bth-plum-soft); }
.bth-onboarding-avatar-art { width: 48px; height: 48px; }
.bth-onboarding-add { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; min-height: 48px; border: 1px dashed var(--bth-line-strong); border-radius: 12px; background: transparent; color: var(--bth-plum); font: inherit; font-size: 14px; cursor: pointer; }
.bth-onboarding-add svg { width: 18px; }
.bth-onboarding-hint { margin: 10px 0 22px; color: var(--bth-muted); font-size: 12px; text-align: center; }
.bth-onboarding-language { display: grid; gap: 10px; padding-top: 18px; border-top: 1px solid var(--bth-line); }
.bth-onboarding-language label { display: flex; align-items: center; gap: 8px; }
.bth-onboarding-language svg { width: 18px; flex: 0 0 18px; color: var(--bth-plum); }
.bth-onboarding .bth-onboarding-submit { width: 100%; min-height: 54px; margin-top: 24px; }
.bth-onboarding-error { margin: 12px 0; color: var(--bth-danger); font-size: 14px; }
.bth-onboarding .bth-ambient-stars { position: fixed; inset: 0; pointer-events: none; overflow: hidden; }
.bth-onboarding .bth-ambient-star { position: absolute; left: var(--x); top: var(--y); width: 13px; color: #e8c36d; opacity: .45; animation: bth-home-drift 14s ease-in-out infinite; }
.bth-onboarding .bth-ambient-star:nth-child(1) { --x: 88%; --y: 5%; }
.bth-onboarding .bth-ambient-star:nth-child(2) { --x: 6%; --y: 26%; }
.bth-onboarding .bth-ambient-star:nth-child(3) { --x: 95%; --y: 48%; }
.bth-onboarding .bth-ambient-star:nth-child(4) { --x: 10%; --y: 80%; }
.bth-onboarding .bth-ambient-star:nth-child(5) { --x: 85%; --y: 88%; }
.bth-onboarding .bth-ambient-star:nth-child(6) { --x: 48%; --y: 96%; }
.bth-onboarding .is-paused .bth-ambient-star { animation-play-state: paused; }
.bth-onboarding:has(input:focus, select:focus) .bth-ambient-stars { visibility: hidden; }
@media (min-width: 600px) {
    .bth-onboarding-main { padding-top: 36px; padding-bottom: 48px; }
    .bth-onboarding-header h1 { font-size: 40px; }
    .bth-onboarding-child { padding: 20px; }
    .bth-onboarding-language { grid-template-columns: 1fr 150px; align-items: center; }
}
@media (max-width: 350px) {
    .bth-onboarding-main { padding-inline: 16px; }
    .bth-onboarding-header h1 { font-size: 30px; }
    .bth-onboarding-child { padding: 12px; }
    .bth-onboarding-child-top { gap: 8px; flex-wrap: wrap; }
    .bth-onboarding-child-top:has(.bth-onboarding-remove) .bth-onboarding-field { order: 3; flex-basis: 100%; }
    .bth-onboarding-remove { margin-left: auto; }
}
@media (prefers-reduced-motion: reduce) { .bth-onboarding .bth-ambient-star { animation: none; } }