/* A shared history shell for the composer and saved reading chats. */
.chat-layout { min-height: 100dvh; }
.chat-shell { display: flex; min-width: 0; align-items: stretch; }
.history-panel { width: 248px; flex: 0 0 248px; padding: 24px 12px; border-right: 1px solid color-mix(in srgb, var(--border) 65%, transparent); background: linear-gradient(165deg, color-mix(in srgb, var(--accent) 4%, var(--bg)), var(--bg) 55%); position: sticky; top: 0; height: calc(100dvh - 72px); overflow-y: auto; }
.history-heading { padding: 0 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 16px; }
.history-heading h2 { margin: 4px 0 0; font-size: 1.125rem; letter-spacing: -.02em; }
.history-close, .history-delete, .history-more, .chat-history-toggle, .chat-skip, #chat-skip, .chat-new-link, .history-new { min-height: 44px; border: 0; border-radius: 12px; padding: 8px 12px; color: var(--text); background: var(--raised); font: inherit; font-size: .875rem; text-decoration: none; }
.history-eyebrow { color: var(--muted); font-size: .625rem; letter-spacing: .12em; text-transform: uppercase; }
.history-new { display: flex; align-items: center; gap: 8px; margin: 20px 0; padding: 10px 12px; border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent); background: color-mix(in srgb, var(--accent) 8%, var(--bg)); color: var(--accent); transition: background 160ms ease, border-color 160ms ease; }
.history-new:hover { background: color-mix(in srgb, var(--accent) 14%, var(--bg)); border-color: var(--accent); }
.history-new-icon { font-size: 1.125rem; line-height: 1; }
.history-new-arrow { margin-left: auto; opacity: .6; }
.history-list { padding: 0; margin: 0; list-style: none; }
.history-item { position: relative; margin-bottom: 4px; }
.history-link { display: flex; min-width: 0; flex-direction: column; gap: 3px; padding: 10px 42px 10px 12px; border: 1px solid transparent; border-radius: 10px; color: var(--text); text-decoration: none; font-size: .8125rem; transition: background 160ms ease, border-color 160ms ease; }
.history-link:hover { background: color-mix(in srgb, var(--raised) 55%, transparent); }
.history-link.is-current { background: color-mix(in srgb, var(--accent) 9%, var(--bg)); border-color: color-mix(in srgb, var(--accent) 20%, transparent); box-shadow: inset 2px 0 var(--accent); }
.history-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.history-meta { color: var(--muted); font-size: .6875rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.history-delete { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); display: grid; place-items: center; background: transparent; color: var(--muted); min-width: 32px; min-height: 32px; width: 32px; height: 32px; padding: 7px; border-radius: 8px; transition: color 160ms ease, background 160ms ease; }
.history-delete svg { width: 16px; height: 16px; }
.history-delete:hover, .history-delete:focus-visible { background: var(--danger-bg); color: var(--danger); }
.history-status { font-size: .8125rem; color: var(--muted); padding: 0 12px; line-height: 1.6; }
.history-status:empty { display: none; }
.history-more { width: 100%; }
.history-overlay, .history-close, .chat-history-toggle { display: none; }
.dashboard-page.chat-layout main { flex: 1; min-width: 0; }
.reading-page.chat-layout { height: var(--chat-viewport-height, 100dvh); display: flex; flex-direction: column; overflow: hidden; }
.reading-page.chat-layout .site-top-bar { flex-shrink: 0; }
.reading-page .chat-shell { flex: 1; min-height: 0; }
.reading-page .history-panel { position: static; height: auto; }
.reading-page.chat-layout main { display: flex; flex: 1; flex-direction: column; max-width: none; min-width: 0; min-height: 0; padding: 0; text-align: left; align-items: stretch; position: relative; overflow-y: auto; }
.chat-toolbar { display: flex; flex-shrink: 0; align-items: center; gap: 12px; padding: 12px 24px; border-bottom: 1px solid var(--border); }
.chat-toolbar h1 { flex: 1; min-width: 0; margin: 0; font-size: 1.125rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; letter-spacing: -.02em; }
.chat-new-link { display: inline-flex; align-items: center; }
.chat-scroll { flex: 1; min-height: min(180px, 35dvh); overflow-y: auto; overscroll-behavior: contain; scrollbar-gutter: stable; }
.chat-messages { max-width: 848px; margin: 0 auto; padding: 32px 24px 16px; }
.chat-message { margin-bottom: 32px; min-width: 0; }
.chat-message--user { display: flex; justify-content: flex-end; }
.chat-message--user .chat-text { max-width: 85%; padding: 16px 20px; border-radius: 20px 20px 4px 20px; background: var(--raised); white-space: pre-wrap; overflow-wrap: anywhere; }
.chat-author { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: .875rem; margin-bottom: 16px; }
.chat-author::before { content: '✦'; display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--border); border-radius: 50%; color: var(--accent); }
.chat-text { font-size: 1.0625rem; line-height: 1.65; overflow-wrap: anywhere; }
.chat-text p { margin: 0 0 16px; }
.chat-text p:last-child { margin-bottom: 0; }
.chat-text ul, .chat-text ol { padding-left: 24px; }
.chat-text h2, .chat-text h3 { font-size: 1.125rem; margin: 24px 0 12px; }
.chat-status, .chat-error, .chat-share { width: calc(100% - 48px); max-width: 800px; margin: 0 auto 24px; }
.chat-status { color: var(--muted); font-size: .875rem; }
.chat-status:empty { display: none; }
.chat-error { padding: 16px; border: 1px solid var(--danger); border-radius: 12px; color: var(--danger); background: var(--danger-bg); }
.chat-share { color: var(--muted); font-size: .8125rem; }
.chat-share p { margin: 0 0 12px; }
.chat-composer-wrap { flex-shrink: 0; width: 100%; max-width: 688px; align-self: center; padding: 16px 24px max(12px, env(safe-area-inset-bottom, 0px), var(--vk-inset-bottom, 0px)); background: var(--bg); }
.chat-composer { display: grid; grid-template-columns: minmax(0, 1fr) 44px; align-items: center; gap: 8px; padding: 8px; border: 1px solid var(--border); border-radius: 18px; background: var(--surface); box-shadow: 0 8px 28px rgb(0 0 0 / 12%); transition: border-color 160ms ease, box-shadow 160ms ease; }
.chat-composer:focus-within { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 8%, transparent); }
.chat-composer textarea { grid-column: 1; grid-row: 1; width: 100%; min-width: 0; color: var(--text); line-height: 1.5; min-height: 44px; max-height: min(160px, 24dvh); padding: 10px 12px; border: 0; border-radius: 12px; background: transparent; resize: none; overflow-y: auto; font-size: 1rem; }
.chat-composer button { min-width: 44px; min-height: 44px; border: 0; border-radius: 50%; font: inherit; font-size: 1.25rem; color: var(--on-accent); background: var(--accent); }
.chat-composer textarea:focus-visible { outline: none; }
#chat-send { display: grid; place-items: center; width: 44px; height: 44px; padding: 11px; border-radius: 14px; background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 75%, white), var(--accent)); box-shadow: inset 0 1px 0 rgb(255 255 255 / 25%); transition: background 160ms ease, box-shadow 160ms ease; }
#chat-send svg { width: 22px; height: 22px; }
#chat-send:not(:disabled):hover { background: var(--accent); box-shadow: 0 3px 14px color-mix(in srgb, var(--accent) 22%, transparent); }
.chat-composer button:disabled, #chat-send:disabled { background: var(--raised); color: var(--muted); cursor: not-allowed; }
.chat-composer-meta { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 8px; font-size: .8125rem; color: var(--muted); }
.chat-limit, .chat-context-note, .chat-disclaimer { font-size: .8125rem; color: var(--muted); margin: 0 0 8px; }
.chat-disclaimer { text-align: center; margin: 8px 0 0; }
.chat-jump { position: absolute; bottom: 200px; right: 24px; min-height: 44px; padding: 10px 16px; border: 1px solid var(--border); border-radius: 999px; background: var(--raised); color: var(--text); box-shadow: var(--shadow); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.chat-cards { display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; margin: 24px 0 32px; }
.chat-card { width: min(220px, 100%); text-align: center; }
.chat-card__stage { aspect-ratio: 2 / 3.4; perspective: 1000px; }
.chat-card__flip { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; transform: rotateY(180deg) translateY(12px); transition: transform 700ms cubic-bezier(.22,1,.36,1); transition-delay: var(--flip-delay, 0ms); }
.chat-card.is-revealed .chat-card__flip { transform: rotateY(0) translateY(0); }
.chat-card__front, .chat-card__back { position: absolute; inset: 0; padding: 8px; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); backface-visibility: hidden; -webkit-backface-visibility: hidden; box-shadow: var(--shadow); }
.chat-card__back { display: grid; place-items: center; transform: rotateY(180deg); background: radial-gradient(circle at center, rgb(216 190 134 / 10%), transparent 65%), var(--surface); }
.chat-card__back::before { content: ''; position: absolute; inset: 16px; border: 1px solid var(--accent); opacity: .4; border-radius: 12px; }
.chat-card__back::after { content: '✦'; display: grid; place-items: center; width: 64px; height: 64px; border: 1px solid var(--accent); border-radius: 50%; color: var(--accent); font-size: 2rem; }
.chat-card__image { height: 100%; width: 100%; border-radius: 12px; overflow: hidden; background: var(--raised); }
.chat-card__image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.chat-card--reversed img { transform: rotate(180deg); }
.chat-card__placeholder { height: 100%; display: grid; place-items: center; padding: 16px; font-size: .8125rem; color: var(--muted); }
.chat-card__caption { margin-top: 16px; }
.chat-card__position { margin: 0 0 8px; color: var(--muted); font-size: .8125rem; }
.chat-card__name { font-size: 1rem; margin: 0 0 8px; }
.chat-card__orientation { display: inline-block; color: var(--success); font-size: .8125rem; }
.chat-card--reversed .chat-card__orientation { color: var(--danger); }
.chat-spread-title { margin: 0 0 12px; font-size: 1.5rem; }
.chat-spread-desc { margin: 0; color: var(--muted); font-size: .9375rem; }
@media (max-width: 1023px) {
  .chat-layout .history-panel { position: fixed; inset: 0 auto 0 0; z-index: 50; width: min(320px, calc(100% - 32px)); height: 100dvh !important; padding-top: max(24px, env(safe-area-inset-top), var(--vk-inset-top, 0px)); transform: translateX(-105%); visibility: hidden; transition: transform 200ms ease, visibility 200ms; }
  .history-open .history-panel { transform: translateX(0); visibility: visible; }
  .history-open .history-overlay { display: block; position: fixed; inset: 0; z-index: 40; border: 0; background: rgb(0 0 0 / 55%); }
  .history-close, .chat-history-toggle { display: inline-flex; align-items: center; }
  .dashboard-page .chat-history-toggle { margin-bottom: 16px; }
}
@media (max-width: 480px) {
  .chat-toolbar { padding: 8px 16px; gap: 8px; flex-wrap: wrap; }
  .chat-toolbar h1 { order: 3; flex-basis: 100%; font-size: 1rem; }
  .chat-new-link { margin-left: auto; }
  .chat-messages { padding: 24px 16px 8px; }
  .chat-message--user .chat-text { max-width: 95%; padding: 12px 16px; }
  .chat-composer-wrap { padding-left: 16px; padding-right: 16px; }
  .chat-status, .chat-error, .chat-share { width: calc(100% - 32px); }
  .chat-cards { gap: 24px; }
}
@media (prefers-reduced-motion: reduce) { .chat-card__flip { transition: none; transform: none; } }

/* First message: spread selector inside the composer. */
.chat-composer--new { row-gap: 4px; }
.chat-composer-tools { display: contents; }
.chat-composer-tools #chat-send { grid-column: 2; grid-row: 1; align-self: center; }
.chat-composer--new #chat-send { grid-row: 1 / span 2; }
.spread-picker { grid-column: 1; grid-row: 2; position: relative; min-width: 0; max-width: 100%; }
.chat-composer .spread-picker-toggle { display: flex; align-items: center; gap: 10px; min-width: 0; max-width: 100%; padding: 8px 12px; border-radius: 12px; color: var(--muted); background: transparent; font-size: .875rem; text-align: left; }
#spread-picker-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-composer .spread-picker-toggle:hover, .chat-composer .spread-picker-toggle[aria-expanded="true"] { color: var(--text); background: var(--raised); }
.spread-picker-menu { position: absolute; z-index: 30; bottom: calc(100% + 16px); left: 0; width: min(420px, calc(100vw - 48px)); max-height: min(440px, calc(var(--chat-viewport-height, 100dvh) - 300px)); overflow-y: auto; overscroll-behavior: contain; padding: 6px; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); box-shadow: 0 16px 48px rgb(0 0 0 / 30%); }
.chat-composer .spread-picker-option { display: flex; flex-direction: column; gap: 6px; width: 100%; min-height: 64px; padding: 14px; border-radius: 14px; background: transparent; color: var(--text); text-align: left; font-size: .9375rem; }
.chat-composer .spread-picker-option:hover, .chat-composer .spread-picker-option:focus-visible, .chat-composer .spread-picker-option[aria-selected="true"] { background: var(--raised); }
.spread-picker-option__title { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-weight: 600; }
.spread-picker-option__badge { color: var(--accent); font-size: .8125rem; font-weight: 400; }
.spread-picker-option__description { color: var(--muted); font-size: .8125rem; line-height: 1.5; font-weight: 400; }
.chat-spread-hint { color: var(--muted); font-size: .8125rem; margin: 12px 0 0; }
.chat-welcome { max-width: 600px; margin: min(12vh, 100px) auto 32px; padding: 32px 24px; text-align: center; }
.chat-welcome__symbol { display: inline-grid; place-items: center; width: 64px; height: 64px; margin-bottom: 24px; border: 1px solid var(--border); border-radius: 20px; color: var(--accent); font-size: 2rem; }
.chat-welcome h2 { margin: 0 0 16px; font-size: clamp(1.75rem, 4vw, 2.5rem); letter-spacing: -.04em; }
.chat-welcome p { margin: 0; color: var(--muted); line-height: 1.65; }

/* Small, named icon actions for a saved reading. */
.chat-share .share-actions__btn { width: 40px; min-height: 40px; height: 40px; padding: 10px; margin-right: 6px; border-radius: 12px; border: 1px solid var(--border); color: var(--muted); background: transparent; transition: background 160ms ease, color 160ms ease, border-color 160ms ease; }
.chat-share .share-actions__btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.chat-share .share-actions__btn:hover { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); background: color-mix(in srgb, var(--accent) 8%, var(--bg)); }
#share-status:empty { display: none; }
@media (pointer: coarse) { .history-delete { min-width: 44px; min-height: 44px; width: 44px; height: 44px; right: 2px; } .history-link { padding-right: 48px; } .chat-share .share-actions__btn { width: 44px; height: 44px; } }