/* ==========================================================================
   Life OS — sign-in screen, choice dialogs, sync badge
   ========================================================================== */
body.auth-locked { overflow: hidden; }
body.auth-locked .app { visibility: hidden; }
.auth {
  position: fixed; inset: 0; z-index: 600; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  background: var(--bg); animation: page-in 0.4s var(--ease) both; overflow-y: auto;
}
.auth.leaving { opacity: 0; transition: opacity 0.25s; }
.auth-panel { display: flex; align-items: center; justify-content: center; padding: 40px 24px; }
.auth-card { width: 100%; max-width: 400px; }
.auth-brand { display: flex; align-items: center; gap: 11px; margin-bottom: 36px; }
.auth-title { font-size: 32px; font-weight: 600; letter-spacing: -0.035em; line-height: 1.1; }
.auth-sub { color: var(--text-2); margin: 8px 0 24px; font-size: 15px; }
.auth-tabs { margin-bottom: 18px; }
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-field { position: relative; display: block; }
.auth-field > svg { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--text-3); pointer-events: none; }
.auth-field .input { height: 52px; padding-left: 46px; border-radius: 16px; font-size: 16px; background: var(--surface); }
.auth-field input[type='password'], .auth-field input[name='password'] { padding-right: 48px; }
.auth-eye { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; color: var(--text-3); }
.auth-eye:hover { background: var(--surface-3); color: var(--text); }
.auth-form .btn.lg { height: 52px; border-radius: 16px; margin-top: 4px; }
.auth-msg { display: flex; gap: 10px; align-items: flex-start; padding: 11px 14px; border-radius: 14px; font-size: 13.5px; }
.auth-msg.bad { background: var(--bad-soft); color: var(--bad); }
.auth-msg.good { background: var(--good-soft); color: var(--good); }
.auth-msg svg { flex-shrink: 0; margin-top: 1px; }
.auth-links { display: flex; justify-content: center; margin-top: 16px; min-height: 20px; }
.auth-local { display: flex; flex-direction: column; align-items: center; gap: 2px; margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); }
.auth-check { width: 72px; height: 72px; border-radius: 24px; background: var(--accent-soft); color: var(--accent-text); display: grid; place-items: center; margin: 8px 0 24px; }
.auth-art { background: #121411; color: #f1f3ec; margin: 16px 16px 16px 0; border-radius: 32px; display: flex; align-items: flex-end; padding: 48px; position: relative; overflow: hidden; }
.auth-art::before { content: ''; position: absolute; width: 520px; height: 520px; right: -160px; top: -160px; border-radius: 50%; background: radial-gradient(circle, rgba(212, 245, 91, 0.22), transparent 65%); }
.auth-art-inner { position: relative; max-width: 440px; }
.auth-mark { width: 96px; height: 96px; border-radius: 30px; background: var(--accent); color: #121411; display: grid; place-items: center; margin-bottom: 32px; }
.auth-art h2 { font-size: 40px; line-height: 1.05; letter-spacing: -0.04em; font-weight: 600; margin-bottom: 28px; }
.auth-art ul { list-style: none; padding: 0; margin: 0 0 32px; display: flex; flex-direction: column; gap: 14px; font-size: 16px; color: #d8dcd0; }
.auth-art li { display: flex; align-items: center; gap: 12px; }
.auth-art li svg { color: var(--accent); }
.auth-art p { color: #9ea396; font-size: 13.5px; display: flex; align-items: center; gap: 8px; }
@media (max-width: 900px) {
  .auth { grid-template-columns: 1fr; }
  .auth-art { display: none; }
  .auth-panel { align-items: flex-start; padding: calc(32px + env(safe-area-inset-top)) 20px calc(24px + env(safe-area-inset-bottom)); }
  .auth-title { font-size: 28px; }
}

.spinner { width: 20px; height: 20px; border-radius: 50%; border: 2.5px solid currentColor; border-right-color: transparent; animation: spin 0.7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
button:disabled { opacity: 0.75; pointer-events: none; }

.choice-list { display: flex; flex-direction: column; gap: 10px; }
.choice-opt { display: flex; align-items: center; gap: 14px; padding: 14px; border-radius: 18px; background: var(--surface-2); border: 1px solid var(--border); text-align: left; transition: border-color 0.15s, transform 0.15s var(--ease); }
.choice-opt:hover { border-color: var(--border-2); }
.choice-opt:active { transform: scale(0.98); }
.choice-opt.primary { background: var(--accent-soft); border-color: var(--accent-2); }
.choice-opt.primary .sheet-ic { background: var(--accent); border-color: var(--accent-2); color: var(--accent-ink); }
.choice-opt > svg:last-child { color: var(--text-3); flex-shrink: 0; }
.choice-title { display: block; font-weight: 600; }
.choice-sub { display: block; font-size: 12.5px; color: var(--text-3); margin-top: 2px; }

.sync-btn.is-synced { color: var(--good); }
.sync-btn.is-error { color: var(--bad); }
.sync-btn.is-offline { color: var(--warn); }
.sync-btn.is-syncing svg, .sync-btn.is-pending svg { animation: sync-pulse 1.1s ease-in-out infinite; }
@keyframes sync-pulse { 50% { opacity: 0.35; transform: translateY(-1px); } }
code { font-family: var(--mono); font-size: 0.9em; background: var(--surface-3); padding: 1px 6px; border-radius: 6px; }