:root {
  color-scheme: light;
  --share-bg: #f4f1ea;
  --share-surface: rgba(255, 255, 255, 0.88);
  --share-surface-strong: #ffffff;
  --share-line: rgba(24, 24, 24, 0.12);
  --share-text: #111111;
  --share-text-soft: #4a4a4a;
  --share-muted: #777777;
  --share-accent: #111111;
  --share-accent-ink: #ffffff;
  --share-shadow: 0 24px 72px rgba(28, 18, 5, 0.12);
  --share-font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --share-bg: #101112;
  --share-surface: rgba(20, 21, 24, 0.92);
  --share-surface-strong: #18191c;
  --share-line: rgba(255, 255, 255, 0.1);
  --share-text: #f5f5f5;
  --share-text-soft: #d9d9d9;
  --share-muted: #9e9fa3;
  --share-accent: #f5f5f5;
  --share-accent-ink: #111111;
  --share-shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
}

.conversation-share-dialog [hidden],
.conversation-share-lightbox[hidden],
body.share-page [hidden],
.share-lightbox[hidden] {
  display: none !important;
}

.conversation-share-dialog {
  width: min(1100px, 100%);
  max-height: min(820px, calc(100dvh - 36px));
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
}

.conversation-share-layout {
  display: grid;
  min-height: 0;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
}

.conversation-share-form {
  display: grid;
  align-content: start;
  gap: 14px;
  min-height: 0;
  padding: 18px;
  background: color-mix(in srgb, var(--surface-soft, #f6f6f6) 86%, transparent);
  border-right: 1px solid var(--line, #dedede);
  overflow-y: auto;
}

.conversation-share-target {
  display: grid;
  gap: 5px;
  padding: 14px;
  background: var(--surface, #fff);
  border: 1px solid var(--line, #dedede);
  border-radius: 12px;
}

.conversation-share-target strong {
  font-size: 15px;
}

.conversation-share-target small,
.conversation-share-helper,
.conversation-share-public-hint {
  color: var(--muted, #666);
  font-size: 11px;
  line-height: 1.6;
}

.conversation-share-fieldset,
.conversation-share-current,
.conversation-share-preview-pane {
  display: grid;
  gap: 10px;
  padding: 14px;
  background: var(--surface, #fff);
  border: 1px solid var(--line, #dedede);
  border-radius: 12px;
}

.conversation-share-fieldset {
  align-content: start;
}

.conversation-share-fieldset > strong,
.conversation-share-current strong,
.conversation-share-preview-pane > strong {
  font-size: 13px;
}

.conversation-share-option-list {
  display: grid;
  gap: 8px;
}

.conversation-share-option {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  background: var(--surface-soft, #f6f6f6);
  border: 1px solid var(--line, #dedede);
  border-radius: 10px;
}

.conversation-share-option > span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
}

.conversation-share-option small {
  color: var(--muted, #666);
  font-size: 11px;
  line-height: 1.55;
}

.conversation-share-option input {
  margin: 0;
}

.conversation-share-select {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  color: var(--text, #111);
  background: var(--surface, #fff);
  border: 1px solid var(--line-strong, #bdbdbd);
  border-radius: 10px;
}

.conversation-share-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  background: var(--surface-soft, #f6f6f6);
  border: 1px solid var(--line, #dedede);
  border-radius: 10px;
}

.conversation-share-checkbox input {
  margin-top: 2px;
}

.conversation-share-checkbox span {
  display: grid;
  gap: 3px;
  font-size: 12px;
  font-weight: 600;
}

.conversation-share-checkbox small {
  color: var(--muted, #666);
  font-size: 11px;
  line-height: 1.55;
}

.conversation-share-form-error {
  margin: 0;
  padding: 10px 12px;
  color: var(--danger, #b42318);
  background: rgba(180, 35, 24, 0.08);
  border: 1px solid rgba(180, 35, 24, 0.15);
  border-radius: 10px;
  font-size: 12px;
}

.conversation-share-preview-pane {
  min-height: 0;
  padding: 18px;
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow: hidden;
}

.conversation-share-preview-top {
  display: grid;
  gap: 12px;
}

.conversation-share-current-status {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: var(--surface-soft, #f6f6f6);
  border: 1px solid var(--line, #dedede);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.conversation-share-current small {
  color: var(--muted, #666);
  font-size: 11px;
}

.conversation-share-link {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  color: var(--text, #111);
  background: var(--surface-soft, #f6f6f6);
  border: 1px solid var(--line, #dedede);
  border-radius: 10px;
  font-size: 12px;
}

.conversation-share-preview-empty {
  display: grid;
  min-height: 220px;
  place-items: center;
  gap: 8px;
  padding: 28px;
  color: var(--muted, #666);
  text-align: center;
  background: color-mix(in srgb, var(--surface-soft, #f6f6f6) 92%, transparent);
  border: 1px dashed var(--line, #dedede);
  border-radius: 14px;
}

.conversation-share-preview-empty strong {
  color: var(--text, #111);
  font-size: 14px;
}

.conversation-share-preview-empty p,
.conversation-share-omitted-note {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
}

.conversation-share-omitted-note {
  padding: 10px 12px;
  color: var(--text-soft, #3f3f3f);
  background: color-mix(in srgb, var(--surface-soft, #f6f6f6) 88%, transparent);
  border: 1px solid var(--line, #dedede);
  border-radius: 10px;
}

.conversation-share-preview-stream {
  display: grid;
  gap: 14px;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
}

.conversation-share-message {
  display: grid;
  gap: 12px;
  padding: 16px;
  background: var(--surface, #fff);
  border: 1px solid var(--line, #dedede);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.04);
}

.conversation-share-message.user {
  background: color-mix(in srgb, var(--surface-soft, #f6f6f6) 90%, transparent);
}

.conversation-share-message-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.conversation-share-message-header > span {
  display: grid;
  gap: 4px;
}

.conversation-share-message-header strong {
  font-size: 13px;
}

.conversation-share-message-header small {
  color: var(--muted, #666);
  font-size: 11px;
}

.conversation-share-copy-text,
.share-copy-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 12px;
  color: var(--text, #111);
  background: var(--surface-soft, #f6f6f6);
  border: 1px solid var(--line, #dedede);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.conversation-share-copy-text .icon {
  width: 14px;
  height: 14px;
}

.conversation-share-message-body > p,
.share-message-body > p {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.conversation-share-message-body,
.share-message-body {
  overflow-wrap: anywhere;
}

.conversation-share-message-body pre,
.conversation-share-message-body table,
.share-message-body pre,
.share-message-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

.conversation-share-image-grid,
.share-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.conversation-share-image-card,
.share-image-card {
  display: grid;
  gap: 8px;
  padding: 10px;
  color: inherit;
  text-align: left;
  background: var(--surface-soft, #f6f6f6);
  border: 1px solid var(--line, #dedede);
  border-radius: 12px;
}

.conversation-share-image-card img,
.share-image-frame img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--surface-strong, #fff);
  border-radius: 10px;
}

.conversation-share-image-card span:last-child,
.share-image-card strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
}

.conversation-share-footer {
  justify-content: space-between !important;
}

.conversation-share-footer-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.conversation-share-footer-note {
  color: var(--muted, #666);
  font-size: 11px;
  line-height: 1.6;
}

.conversation-share-revoke-confirmation {
  display: grid;
  gap: 8px;
  padding: 12px 14px;
  background: rgba(180, 35, 24, 0.06);
  border: 1px solid rgba(180, 35, 24, 0.16);
  border-radius: 12px;
}

.conversation-share-revoke-confirmation strong {
  font-size: 12px;
  color: var(--danger, #b42318);
}

.conversation-share-revoke-confirmation p {
  margin: 0;
  color: var(--text-soft, #3f3f3f);
  font-size: 12px;
  line-height: 1.6;
}

.conversation-share-revoke-confirmation-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.conversation-share-revoke-confirmation-actions #conversation-share-revoke-confirm-button {
  color: var(--danger, #b42318);
  background: var(--surface, #fff);
}

.conversation-share-footer button#conversation-share-copy-button,
.conversation-share-footer button#conversation-share-revoke-button {
  color: var(--text, #111);
  background: var(--surface, #fff);
}

.conversation-share-footer button#conversation-share-revoke-button {
  color: var(--danger, #b42318);
}

.conversation-share-lightbox,
.share-lightbox {
  position: fixed;
  z-index: 140;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.8);
}

.share-lightbox.open {
  display: flex;
}

.conversation-share-lightbox.open {
  display: flex;
}

.conversation-share-lightbox img,
.share-lightbox img {
  display: block;
  width: auto;
  max-width: min(1200px, 100%);
  max-height: calc(100dvh - 72px);
  border-radius: 16px;
  box-shadow: var(--share-shadow);
}

.conversation-share-lightbox-close,
.share-lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  min-height: 40px;
  padding: 0 14px;
  color: #fff;
  background: rgba(17, 17, 17, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
}

body.share-page {
  min-height: 100dvh;
  margin: 0;
  color: var(--share-text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.62), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.24), transparent 30%),
    var(--share-bg);
  font-family: var(--share-font);
}

.share-shell {
  display: grid;
  gap: 18px;
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.share-hero,
.share-meta,
.share-state-card,
.share-message {
  background: var(--share-surface);
  border: 1px solid var(--share-line);
  box-shadow: var(--share-shadow);
  backdrop-filter: blur(18px);
}

.share-hero {
  display: grid;
  gap: 14px;
  padding: 28px;
  border-radius: 24px;
}

.share-kicker {
  display: inline-flex;
  width: fit-content;
  padding: 4px 10px;
  border: 1px solid var(--share-line);
  border-radius: 999px;
  color: var(--share-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.share-hero h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.12;
}

.share-hero p {
  max-width: 720px;
  margin: 0;
  color: var(--share-text-soft);
  font-size: 14px;
  line-height: 1.7;
}

.share-hero-actions,
.share-state-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.share-primary-action,
.share-secondary-action {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.share-primary-action {
  color: var(--share-accent-ink);
  background: var(--share-accent);
  border: 1px solid var(--share-accent);
}

.share-secondary-action {
  color: var(--share-text);
  background: transparent;
  border: 1px solid var(--share-line);
}

.share-meta {
  display: grid;
  gap: 8px;
  padding: 18px 22px;
  border-radius: 18px;
}

.share-meta span {
  font-size: 12px;
  font-weight: 600;
}

.share-meta small {
  color: var(--share-muted);
  font-size: 11px;
  line-height: 1.7;
}

.share-state-card {
  display: grid;
  gap: 10px;
  padding: 20px 22px;
  border-radius: 18px;
}

.share-state-card strong {
  font-size: 16px;
}

.share-state-card p {
  margin: 0;
  color: var(--share-text-soft);
  line-height: 1.7;
}

.share-loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-self: center;
  padding: 10px 14px;
  color: var(--share-text-soft);
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid var(--share-line);
  border-radius: 999px;
  font-size: 12px;
}

.share-loading span {
  width: 7px;
  height: 7px;
  background: currentColor;
  border-radius: 50%;
  animation: share-loading-bounce 1.2s ease-in-out infinite;
}

.share-loading span:nth-child(2) {
  animation-delay: .16s;
}

.share-loading span:nth-child(3) {
  animation-delay: .32s;
}

.share-stream {
  display: grid;
  gap: 16px;
}

.share-message {
  display: grid;
  gap: 14px;
  padding: 20px;
  border-radius: 20px;
}

.share-message.user {
  background: color-mix(in srgb, var(--share-surface) 90%, rgba(255, 255, 255, 0.3));
}

.share-message-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.share-message-header > span {
  display: grid;
  gap: 4px;
}

.share-message-header strong {
  font-size: 14px;
}

.share-message-header small {
  color: var(--share-muted);
  font-size: 11px;
}

.share-message-body {
  color: var(--share-text-soft);
  font-size: 14px;
  line-height: 1.75;
}

.share-image-card {
  padding: 12px;
  border-radius: 16px;
}

.share-image-frame {
  position: relative;
  display: block;
}

.share-image-zoom {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 4px 8px;
  color: #fff;
  background: rgba(17, 17, 17, 0.68);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
}

@keyframes share-loading-bounce {
  0%, 80%, 100% { transform: scale(.7); opacity: .5; }
  40% { transform: scale(1); opacity: 1; }
}

@media (max-width: 760px) {
  .conversation-share-layout {
    display: block;
    overflow-y: auto;
  }

  .conversation-share-form,
  .conversation-share-preview-pane,
  .conversation-share-preview-stream {
    overflow: visible;
  }

  .conversation-share-form {
    border-right: 0;
    border-bottom: 1px solid var(--line, #dedede);
  }

  .conversation-share-footer {
    align-items: stretch !important;
    flex-direction: column;
  }

  .conversation-share-footer-actions {
    justify-content: stretch;
  }

  .conversation-share-footer-actions > button {
    flex: 1;
  }

  .share-shell {
    width: min(100% - 24px, 1080px);
    padding-top: 20px;
  }

  .share-hero,
  .share-meta,
  .share-state-card,
  .share-message {
    padding-left: 18px;
    padding-right: 18px;
  }

  .share-image-grid,
  .conversation-share-image-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .share-hero-actions,
  .share-state-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .share-image-grid,
  .conversation-share-image-grid {
    grid-template-columns: 1fr;
  }
}