/* ------------------------------------------------------------------ */
/* 暖屿 · 响应式与可达性                                               */
/* ------------------------------------------------------------------ */

@media (max-width: 960px) {
  .app-shell {
    padding: 8px;
    gap: 0;
  }

  .app-main {
    width: 100%;
    gap: 8px;
    padding-bottom: 66px;
  }

  .sidebar {
    position: fixed;
    z-index: 100;
    top: 8px;
    bottom: 8px;
    left: 8px;
    width: min(284px, calc(100vw - 22px));
    transform: translateX(calc(-100% - 20px));
    transition: transform 0.38s var(--ease-out);
    box-shadow: 24px 0 70px -36px rgba(66, 42, 30, 0.65);
  }

  body.sidebar-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-scrim {
    position: fixed;
    z-index: 90;
    inset: 0;
    display: block;
    border: 0;
    background: rgba(57, 39, 30, 0.32);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    backdrop-filter: blur(4px);
  }

  body.sidebar-open .sidebar-scrim {
    opacity: 1;
    pointer-events: auto;
  }

  body.sidebar-open {
    overflow: hidden;
  }

  .menu-btn {
    display: inline-grid !important;
  }

  .topbar {
    min-height: 62px;
    padding: 9px 12px;
    border-radius: 19px;
  }

  .topbar-crumb h1 {
    font-size: 15px;
  }

  .model-quick select {
    width: 145px;
  }

  .view-root {
    border-radius: 20px;
  }

  .page {
    padding: 4px 12px 30px;
  }

  .page-chat {
    padding: 0 2px 4px;
  }

  .page-head {
    padding-top: 16px;
  }

  .mobile-nav {
    position: fixed;
    z-index: 50;
    right: 10px;
    bottom: calc(9px + env(safe-area-inset-bottom));
    left: 10px;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1px;
    height: 56px;
    padding: 5px;
    border: 1px solid rgba(234, 219, 201, 0.9);
    border-radius: 19px;
    background: rgba(255, 251, 245, 0.94);
    box-shadow: 0 18px 40px -24px rgba(74, 46, 33, 0.6);
    backdrop-filter: blur(18px);
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    border-radius: 13px;
    color: var(--muted);
    font-size: 8.5px;
    font-weight: 500;
    transition: background 0.2s, color 0.2s;
  }

  .mobile-nav-item .icon {
    width: 17px;
    height: 17px;
  }

  .mobile-nav-item.is-active {
    background: var(--accent-wash);
    color: var(--accent-deep);
    font-weight: 600;
  }

  .welcome-page {
    height: 100%;
    padding-bottom: 40px;
  }

  .chat-scroll {
    scroll-padding-bottom: 10px;
  }
}

@media (max-width: 760px) {
  .topbar-actions {
    gap: 5px;
  }

  .model-quick {
    display: none;
  }

  .status-pill,
  .token-pill {
    height: 32px;
    padding: 0 10px;
    font-size: 10px;
  }

  .topbar-actions > .icon-btn {
    width: 33px;
    height: 33px;
  }

  .page-head {
    gap: 12px;
    padding: 13px 2px 18px;
  }

  .page-title {
    font-size: 31px;
  }

  .page-lede {
    font-size: 12px;
    line-height: 1.75;
  }

  .page-actions .btn {
    min-height: 35px;
    padding-inline: 12px;
    font-size: 11.5px;
  }

  .welcome-page {
    padding: 2px 10px 35px;
  }

  .welcome-title {
    font-size: 38px;
  }

  .welcome-actions .btn {
    flex: 1;
  }

  .welcome-feature {
    padding: 17px;
  }

  .archive-overview-strip {
    gap: 6px;
  }

  .overview-item {
    padding: 10px;
  }

  .overview-copy strong {
    font-size: 16px;
  }

  .import-section {
    margin-top: 20px;
  }

  .import-section-head {
    flex-wrap: wrap;
    gap: 8px;
  }

  .import-section-head .text-link {
    width: 100%;
    padding-left: 4px;
  }

  .settings-layout {
    gap: 12px;
  }

  .settings-card-head {
    flex-wrap: wrap;
  }

  .settings-status-chip {
    order: 2;
  }

  .token-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .settings-side {
    gap: 9px;
  }

  .about-card {
    gap: 13px;
    padding: 18px;
  }

  .about-art {
    width: 55px;
    height: 55px;
    flex-basis: 55px;
    border-radius: 17px;
  }

  .inline-brand-sun {
    top: 10px;
    right: 10px;
    width: 22px;
    height: 22px;
  }

  .inline-brand-sea {
    width: 70px;
    height: 20px;
    bottom: 6px;
  }

  .journal-toolbar {
    padding: 10px;
  }

  .journal-note {
    font-size: 8.5px;
  }

  .plugin-card-head {
    gap: 8px;
  }

  .plugin-icon {
    width: 34px;
    height: 34px;
    flex-basis: 34px;
  }

  .plugin-title-line h2 {
    font-size: 17px;
  }

  .status-panel {
    width: min(360px, calc(100vw - 12px));
  }

  .chat-head-actions .status-toggle-btn span {
    display: none;
  }

  .chat-head-actions .status-toggle-btn {
    width: 31px;
    padding: 0;
  }
}

@media (max-width: 520px) {
  .app-shell {
    padding: 6px;
  }

  .topbar {
    min-height: 57px;
    border-radius: 17px;
    padding: 8px 9px;
  }

  .topbar-crumb .crumb-kicker {
    display: none;
  }

  .topbar-crumb h1 {
    font-size: 14px;
  }

  .topbar-leading {
    gap: 7px;
  }

  .status-pill {
    padding-inline: 9px;
  }

  .token-pill {
    width: 32px;
    padding: 0;
    justify-content: center;
  }

  .token-pill #token-hud-text {
    display: none;
  }

  .topbar-actions > .icon-btn {
    display: none;
  }

  .topbar-actions {
    gap: 4px;
  }

  .mobile-nav {
    right: 7px;
    left: 7px;
    bottom: calc(7px + env(safe-area-inset-bottom));
    height: 54px;
  }

  .mobile-nav-item {
    font-size: 8px;
  }

  .mobile-nav-item .icon {
    width: 16px;
    height: 16px;
  }

  .page {
    padding: 2px 8px 22px;
  }

  .page-chat {
    padding: 0 0 2px;
  }

  .page-head {
    padding-inline: 3px;
  }

  .page-title {
    font-size: 28px;
  }

  .page-actions .btn {
    min-height: 33px;
  }

  .page-actions {
    gap: 5px;
  }

  .archive-overview-strip {
    grid-template-columns: 1fr 1fr;
    margin-bottom: 11px;
  }

  .overview-item {
    padding: 8px 9px;
    gap: 7px;
  }

  .overview-icon {
    width: 29px;
    height: 29px;
    border-radius: 9px;
  }

  .overview-icon .icon {
    width: 14px;
    height: 14px;
  }

  .overview-copy strong {
    font-size: 14px;
  }

  .overview-copy span {
    font-size: 8.5px;
  }

  .archive-card {
    min-height: 250px;
    border-radius: 20px;
  }

  .archive-card-title {
    font-size: 20px;
  }

  .archive-card-foot {
    gap: 8px;
  }

  .archive-card-actions .icon-btn {
    width: 29px;
    height: 29px;
  }

  .archive-card-actions .icon-btn .icon {
    width: 14px;
    height: 14px;
  }

  .archive-card-actions .btn {
    min-height: 31px;
    padding-inline: 10px;
    font-size: 9.5px;
  }

  .welcome-hero {
    border-radius: 22px;
    padding: 22px 17px;
  }

  .welcome-title {
    font-size: 32px;
  }

  .welcome-lede {
    margin-top: 18px;
    font-size: 12px;
    line-height: 1.85;
  }

  .welcome-actions {
    margin-top: 22px;
    gap: 7px;
  }

  .welcome-actions .btn {
    min-height: 42px;
    font-size: 12px;
  }

  .welcome-art {
    min-height: 220px;
  }

  .welcome-features {
    gap: 7px;
    margin-top: 10px;
  }

  .welcome-feature {
    border-radius: 17px;
  }

  .create-form-actions {
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .create-form-actions .btn {
    width: 100%;
  }

  .form-card {
    border-radius: 20px;
    padding: 16px;
  }

  .form-card-head h2 {
    font-size: 19px;
  }

  .step-number {
    width: 28px;
    height: 28px;
    flex-basis: 28px;
  }

  .choice-grid {
    grid-template-columns: 1fr;
  }

  .persona-card,
  .worldbook-card {
    border-radius: 20px;
  }

  .import-section {
    border-radius: 20px;
    padding: 15px;
  }

  .import-section-head h2 {
    font-size: 20px;
  }

  .section-index {
    display: none;
  }

  .entry-editor-card {
    border-radius: 14px;
  }

  .entry-editor-controls {
    margin-left: 0;
  }

  .settings-card {
    border-radius: 20px;
  }

  .settings-card-head h2 {
    font-size: 20px;
  }

  .settings-card-head p:not(.eyebrow) {
    font-size: 10px;
  }

  .animation-choices {
    grid-template-columns: 1fr;
  }

  .token-stat-grid {
    gap: 6px;
  }

  .stat-card {
    padding: 11px;
  }

  .stat-value {
    font-size: 20px;
  }

  .storage-grid {
    grid-template-columns: 1fr;
  }

  .data-action-card .btn {
    margin-left: 0;
    width: 100%;
  }

  .about-card {
    align-items: center;
    flex-direction: column;
    text-align: center;
  }

  .journal-toolbar {
    gap: 8px;
  }

  .journal-stats {
    width: 100%;
    justify-content: space-between;
  }

  .log-row {
    padding: 11px 3px;
  }

  .log-message-line {
    display: block;
  }

  .log-event {
    display: block;
    margin-bottom: 1px;
  }

  .log-meta-line .log-dot,
  .log-meta-line > span:nth-child(3) {
    display: none;
  }

  .log-expand-hint {
    display: none;
  }

  .log-details {
    padding: 10px;
  }

  .error-facts {
    grid-template-columns: 64px 1fr;
  }

  .plugin-card-foot {
    align-items: flex-start;
    flex-direction: column;
  }

  .plugin-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .priority-layer:nth-child(2) {
    margin-left: 7px;
  }

  .priority-layer:nth-child(3) {
    margin-left: 14px;
  }

  .worldbook-card {
    padding: 17px;
  }

  .worldbook-card-foot .btn {
    flex: 1;
  }

  .worldbook-card-foot .btn span {
    font-size: 9px;
  }

  .status-pill #ai-status-text {
    max-width: 39px;
    overflow: hidden;
    white-space: nowrap;
  }

  .status-panel {
    top: 4px;
    right: 4px;
    bottom: 4px;
    width: calc(100vw - 8px);
    border-radius: 20px;
    padding: 13px;
  }

  .chat-head {
    gap: 7px;
    padding-top: 5px;
  }

  .chat-title {
    font-size: 22px;
  }

  .chat-meta-chip:nth-last-child(-n + 2) {
    display: none;
  }

  .chat-head-actions .end-chapter-btn span {
    display: none;
  }

  .chat-head-actions .end-chapter-btn {
    width: 31px;
    padding: 0;
  }

  .chat-head-actions .btn {
    min-height: 30px;
  }

  .message-body {
    max-width: calc(100% - 39px);
  }

  .bubble {
    padding: 9px 11px;
    font-size: 13px;
  }

  .rich-text {
    font-size: 13px;
  }

  .chat-error-copy small {
    font-size: 8px;
  }

  .composer-help {
    max-width: 55%;
  }

  .composer-hint {
    font-size: 7.2px;
  }

  .starter-chip {
    font-size: 8.5px;
    padding: 4px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  .art-sun,
  .art-cloud,
  .emoji-tail,
  .anim-gradient .rich-text,
  .anim-glow .rich-text {
    animation: none !important;
  }
}

@media (hover: none) {
  .message-actions {
    opacity: 1;
  }

  .participant-row .icon-btn {
    opacity: 1;
  }
}