/* ═══════════════════════════════════════════════════════════════════════════
   3a-impeccable-2026.css
   Refinement layer for the forum surfaces:
     - sidebar shell (action bar, search, filters, scroll, resizer)
     - sidebar topic-list rows (.topic-card and variants)
     - forum landing welcome panel + welcome modal
   Theme-aware via tokens. 44px+ touch targets on mobile. No side-stripe
   accents, no gradient text, no decorative glassmorphism.
   Loaded after 3-components.css so it can refine the 2026 redesign layer
   without rewriting it. Realm-scoped rules (html[data-realm=…]) keep
   authority on their scope through specificity.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Tokens ─────────────────────────────────────────────────────────────── */
:root {
  --imp-row-radius: 10px;
  --imp-row-pad-y: 10px;
  --imp-row-pad-x: 12px;
  --imp-avatar-size: 44px;

  --imp-row-bg-rest: transparent;
  --imp-row-bg-hover: var(--surface-hover, rgba(0, 0, 0, 0.04));
  --imp-row-border-rest: transparent;
  --imp-row-border-hover: var(--border-subtle, rgba(0, 0, 0, 0.08));
  --imp-row-active-bg: color-mix(in srgb, var(--accent-primary) 9%, transparent);
  --imp-row-active-border: color-mix(in srgb, var(--accent-primary) 38%, transparent);

  --imp-cta-bg: var(--accent-primary);
  --imp-cta-fg: #14210f;
  --imp-cta-shadow:
    0 1px 2px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 color-mix(in srgb, white 18%, transparent);
  --imp-cta-shadow-hover:
    0 4px 12px color-mix(in srgb, var(--accent-primary) 26%, transparent),
    inset 0 1px 0 color-mix(in srgb, white 22%, transparent);

  --imp-focus-ring: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 28%, transparent);

  --imp-noir-tint: rgba(124, 58, 237, 0.07);
  --imp-noir-tint-hover: rgba(124, 58, 237, 0.13);
  --imp-noir-border: color-mix(in srgb, #7c3aed 26%, transparent);
  --imp-werewolf-tint: rgba(229, 62, 62, 0.06);
  --imp-werewolf-tint-hover: rgba(229, 62, 62, 0.12);
  --imp-werewolf-border: color-mix(in srgb, #e53e3e 26%, transparent);
}

[data-theme="deep-ether"] {
  --imp-row-bg-hover: rgba(99, 140, 230, 0.10);
  --imp-row-border-hover: rgba(99, 140, 230, 0.18);
  --imp-cta-bg: #2563eb;
  --imp-cta-fg: #f0f7ff;
  --imp-cta-shadow:
    0 1px 2px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.16);
  --imp-cta-shadow-hover:
    0 4px 14px rgba(37, 99, 235, 0.40),
    inset 0 1px 0 rgba(255, 255, 255, 0.20);
}

[data-theme="grey"] {
  --imp-cta-bg: linear-gradient(
    180deg,
    color-mix(in srgb, var(--text-main) 84%, transparent) 0%,
    color-mix(in srgb, var(--text-main) 70%, transparent) 100%
  );
  --imp-cta-fg: var(--bg-surface);
  --imp-cta-shadow:
    0 1px 2px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);
  --imp-cta-shadow-hover:
    0 4px 12px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

[data-theme="light-ether"] {
  --imp-row-bg-hover: rgba(29, 29, 31, 0.04);
  --imp-row-border-hover: rgba(29, 29, 31, 0.08);
}

/* ═════════════════════════════════════════════════════════════════════════
   SIDEBAR SHELL
   ═════════════════════════════════════════════════════════════════════════ */

/* Surface — quieter background, theme-aware scroll */
.sidebar {
  scrollbar-color: color-mix(in srgb, var(--text-muted) 25%, transparent) transparent;
  scrollbar-width: thin;
}
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--text-muted) 22%, transparent);
  border-radius: 99px;
  border: 2px solid var(--bg-surface-alt);
}
.sidebar::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--accent-primary) 40%, transparent);
}

/* Action bar — sticky, restrained surface */
.sidebar-action-bar {
  padding: 10px;
  gap: 8px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg-surface) 86%, transparent);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.sidebar-action-bar:focus-within {
  border-color: color-mix(in srgb, var(--accent-primary) 55%, transparent);
  box-shadow: var(--imp-focus-ring);
}

/* CTA Nouveau Sujet — accent token, restrained shadow */
.sidebar-action-bar .btn-create-topic {
  flex: 1;
  height: 36px;
  border-radius: 999px;
  background: var(--imp-cta-bg) !important;
  color: var(--imp-cta-fg) !important;
  border: 1px solid color-mix(in srgb, var(--accent-primary) 50%, transparent);
  box-shadow: var(--imp-cta-shadow);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: -0.005em;
  transition:
    transform 0.15s ease,
    box-shadow 0.18s ease,
    filter 0.15s ease;
}
.sidebar-action-bar .btn-create-topic:hover {
  transform: translateY(-1px);
  box-shadow: var(--imp-cta-shadow-hover);
  filter: brightness(1.04);
}
.sidebar-action-bar .btn-create-topic:focus-visible {
  outline: none;
  box-shadow: var(--imp-cta-shadow), var(--imp-focus-ring);
}
.sidebar-action-bar .btn-create-topic:active {
  transform: translateY(0);
  filter: brightness(0.97);
}
.sidebar-action-bar .btn-create-topic.forum-banned {
  background: var(--bg-surface-alt) !important;
  color: var(--text-muted) !important;
  border-color: var(--border-color);
  box-shadow: none;
  filter: none;
}

/* Search button — ghost, accent-aware */
.sidebar-action-bar .sidebar-search-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}
.sidebar-action-bar .sidebar-search-btn:hover {
  background: color-mix(in srgb, var(--accent-primary) 8%, transparent);
  color: var(--accent-text, var(--accent-primary));
  border-color: color-mix(in srgb, var(--accent-primary) 30%, transparent);
}
.sidebar-action-bar .sidebar-search-btn.active,
.sidebar-action-bar .sidebar-search-btn[aria-expanded="true"] {
  background: color-mix(in srgb, var(--accent-primary) 12%, transparent);
  color: var(--accent-text, var(--accent-primary));
  border-color: color-mix(in srgb, var(--accent-primary) 40%, transparent);
}
.sidebar-action-bar .sidebar-search-btn:focus-visible {
  outline: none;
  box-shadow: var(--imp-focus-ring);
}

/* Filter pills (Tout / Populaires / Moi) */
.sidebar-filter-tabs .filter-btn {
  height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}
.sidebar-filter-tabs .filter-btn:hover {
  background: var(--surface-hover);
  color: var(--text-main);
}
.sidebar-filter-tabs .filter-btn.active {
  background: color-mix(in srgb, var(--accent-primary) 14%, transparent);
  color: var(--accent-text, var(--accent-primary));
  border-color: color-mix(in srgb, var(--accent-primary) 35%, transparent);
}
.sidebar-filter-tabs .filter-btn:focus-visible {
  outline: none;
  box-shadow: var(--imp-focus-ring);
}
.sidebar-filter-close {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.sidebar-filter-close:hover {
  background: var(--surface-hover);
  color: var(--text-main);
}

/* Search input — accent-aware focus */
.sidebar-search-wrap .sidebar-search-input {
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  padding-left: 36px;
  padding-right: 36px;
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 13px;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
}
.sidebar-search-wrap .sidebar-search-input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent-primary) 55%, transparent);
  box-shadow: var(--imp-focus-ring);
}

/* Resizer — invisible until interaction */
.sidebar-resizer {
  background: transparent;
  transition: background 0.18s ease;
}
.sidebar-resizer:hover,
.sidebar-resizer.active {
  background: color-mix(in srgb, var(--accent-primary) 35%, transparent);
}

/* ═════════════════════════════════════════════════════════════════════════
   TOPIC-LIST ROWS
   Refined hierarchy. No side-stripe accents. No infinite glow animation.
   ═════════════════════════════════════════════════════════════════════════ */

#sidebar-topics {
  padding: 4px 6px 24px;
}

/* Base row */
.sidebar .topic-card {
  padding: var(--imp-row-pad-y) var(--imp-row-pad-x) !important;
  margin-bottom: 2px;
  gap: 12px !important;
  border-radius: var(--imp-row-radius);
  background: var(--imp-row-bg-rest);
  border: 1px solid var(--imp-row-border-rest);
  box-shadow: none;
  transition:
    background 0.14s ease,
    border-color 0.14s ease,
    box-shadow 0.16s ease;
}
.sidebar .topic-card:hover {
  background: var(--imp-row-bg-hover);
  border-color: var(--imp-row-border-hover);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

/* Active row — calm, no infinite glow, no side stripes */
.sidebar .topic-card.active {
  background: var(--imp-row-active-bg);
  border-color: var(--imp-row-active-border);
  box-shadow: none;
  animation: none;
}
.sidebar .topic-card.active::before,
.sidebar .topic-card.active::after {
  display: none !important;
  animation: none !important;
}
.sidebar .topic-card.active .topic-card-title {
  color: var(--text-main) !important;
  font-weight: 700 !important;
}
.sidebar .topic-card:hover .topic-card-title {
  color: var(--text-main) !important;
}

/* Avatar — thin border, no scale on hover */
.sidebar .topic-card .topic-author-avatar {
  width: var(--imp-avatar-size) !important;
  height: var(--imp-avatar-size) !important;
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  transition: border-color 0.16s ease;
  box-shadow: none !important;
}
.sidebar .topic-card:hover .topic-author-avatar {
  transform: none !important;
  border-color: color-mix(in srgb, var(--accent-primary) 35%, transparent);
}

/* Title — clear hierarchy, 2-line clamp */
.sidebar .topic-card .topic-card-title {
  font-size: 14.5px !important;
  font-weight: 600 !important;
  line-height: 1.35 !important;
  color: var(--text-main) !important;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: break-word;
  background: none !important;
  -webkit-text-fill-color: initial !important;
}

/* Meta line — tight rhythm */
.sidebar .topic-card .topic-card-meta-line {
  font-size: 12px !important;
  color: var(--text-muted) !important;
  margin-top: 2px;
  gap: 6px;
}
.sidebar .topic-card .topic-meta-sep {
  opacity: 0.4;
  font-size: 9px;
}
.sidebar .topic-card .reply-count-inline {
  font-size: 12px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* HOT — warm tint, no side stripe */
.sidebar .topic-card.hot {
  background: linear-gradient(
    180deg,
    rgba(255, 107, 53, 0.06) 0%,
    rgba(255, 107, 53, 0.02) 100%
  ) !important;
  border: 1px solid rgba(255, 107, 53, 0.22) !important;
  box-shadow: none !important;
}
.sidebar .topic-card.hot:hover {
  background: linear-gradient(
    180deg,
    rgba(255, 107, 53, 0.10) 0%,
    rgba(255, 107, 53, 0.04) 100%
  ) !important;
  border-color: rgba(255, 107, 53, 0.38) !important;
}

/* PINNED — subtle accent tint, no side stripe */
.sidebar .topic-card.pinned {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--accent-primary) 6%, transparent) 0%,
    color-mix(in srgb, var(--accent-primary) 1%, transparent) 100%
  );
  border-color: color-mix(in srgb, var(--accent-primary) 24%, transparent);
}

/* DELETED — full danger-tinted border, no side stripe */
.sidebar .topic-card.topic-deleted {
  border: 1px solid color-mix(in srgb, var(--accent-danger) 30%, transparent) !important;
  background: color-mix(in srgb, var(--accent-danger) 4%, transparent) !important;
  opacity: 0.62;
}
.sidebar .topic-card.topic-deleted:hover {
  opacity: 0.85;
  border-color: color-mix(in srgb, var(--accent-danger) 45%, transparent) !important;
}

/* NOIR — full violet tint, no side stripe */
.sidebar .topic-card.topic-noir {
  border: 1px solid var(--imp-noir-border) !important;
  background: linear-gradient(180deg, var(--imp-noir-tint) 0%, transparent 70%) !important;
}
.sidebar .topic-card.topic-noir:hover {
  background: linear-gradient(180deg, var(--imp-noir-tint-hover) 0%, transparent 70%) !important;
  border-color: color-mix(in srgb, #7c3aed 40%, transparent) !important;
  box-shadow: none !important;
}

/* WEREWOLF — full red tint, no side stripe */
.sidebar .topic-card.topic-werewolf {
  border: 1px solid var(--imp-werewolf-border) !important;
  background: linear-gradient(180deg, var(--imp-werewolf-tint) 0%, transparent 70%) !important;
}
.sidebar .topic-card.topic-werewolf:hover {
  background: linear-gradient(180deg, var(--imp-werewolf-tint-hover) 0%, transparent 70%) !important;
  border-color: color-mix(in srgb, #e53e3e 40%, transparent) !important;
}

/* FLAME RISING / BOOSTED — keep warm bg, drop side-stripe override */
.sidebar .topic-card.topic-flame-rising:not(.hot):not(.topic-noir):not(.topic-werewolf):not(.topic-deleted) {
  border-color: rgba(255, 146, 84, 0.18) !important;
  border-left-color: rgba(255, 146, 84, 0.18) !important;
  background-image: linear-gradient(
    90deg,
    rgba(255, 146, 84, 0.05) 0%,
    rgba(255, 146, 84, 0.01) 30%,
    transparent 60%
  );
}
.sidebar .topic-card.topic-flame-boosted:not(.hot):not(.topic-noir):not(.topic-werewolf):not(.topic-deleted) {
  border-color: rgba(255, 146, 84, 0.32) !important;
  border-left-color: rgba(255, 146, 84, 0.32) !important;
  background-image: linear-gradient(
    90deg,
    rgba(255, 146, 84, 0.10) 0%,
    rgba(255, 146, 84, 0.03) 30%,
    transparent 60%
  );
}

/* Focus ring for keyboard nav */
.sidebar .topic-card:focus-visible {
  outline: none;
  box-shadow: var(--imp-focus-ring);
  border-color: color-mix(in srgb, var(--accent-primary) 50%, transparent);
}

/* Press feedback — subtler, desktop-only */
@media (hover: hover) and (pointer: fine) {
  .sidebar .topic-card:active {
    transform: scale(0.995);
    transition: transform 0.08s ease;
  }
}

/* ═════════════════════════════════════════════════════════════════════════
   FORUM LANDING — Welcome panel
   ═════════════════════════════════════════════════════════════════════════ */

.welcome-panel {
  max-width: 480px;
  padding: 56px 32px 40px;
}

/* Solid color in place of gradient text — accent-text token is theme-aware */
.welcome-accent,
html[data-realm][data-theme] .welcome-accent {
  background: none !important;
  -webkit-background-clip: initial !important;
  -webkit-text-fill-color: var(--accent-text, var(--accent-primary)) !important;
  background-clip: initial !important;
  color: var(--accent-text, var(--accent-primary)) !important;
}

/* Ring — accent-driven, theme-adaptive */
.welcome-img-ring {
  width: 168px;
  height: 168px;
  border-radius: 24px;
  padding: 3px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent-primary) 28%, transparent) 0%,
    color-mix(in srgb, var(--accent-primary) 4%, transparent) 60%,
    color-mix(in srgb, var(--accent-primary) 18%, transparent) 100%
  );
  box-shadow: 0 16px 40px -16px color-mix(in srgb, var(--accent-primary) 30%, transparent);
}
.welcome-hero-img {
  border-radius: 21px;
}
.welcome-visual {
  margin-bottom: 24px;
}

/* Typography — tighter hierarchy */
.welcome-title {
  font-size: clamp(1.5rem, 2.4vw, 1.875rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 12px;
  font-weight: 700;
}
.welcome-subtitle {
  font-size: 0.9375rem;
  line-height: 1.55;
  margin: 0 auto 28px;
  max-width: 360px;
  color: var(--text-muted);
}

/* CTA — accent token, restrained motion */
.welcome-cta {
  height: 44px;
  padding: 0 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 999px;
  background: var(--imp-cta-bg) !important;
  color: var(--imp-cta-fg) !important;
  box-shadow: var(--imp-cta-shadow) !important;
  transition:
    transform 0.18s cubic-bezier(0.22, 1, 0.36, 1),
    filter 0.18s ease,
    box-shadow 0.18s ease;
}
.welcome-cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
  box-shadow: var(--imp-cta-shadow-hover) !important;
}
.welcome-cta:focus-visible {
  outline: none;
  box-shadow: var(--imp-cta-shadow), var(--imp-focus-ring) !important;
}
.welcome-cta:active {
  transform: translateY(0) scale(0.985);
}

/* Footer — proper rhythm, classic-mode chip */
.welcome-footer {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.welcome-hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
  opacity: 0.85;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.welcome-hint i {
  font-size: 11px;
  opacity: 0.65;
}

/* "Passer en mode classique" — chip ghost button */
.welcome-mode-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  height: 32px;
  font-size: 0.8125rem;
  font-family: inherit;
  font-weight: 500;
  text-decoration: none;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}
.welcome-mode-toggle:hover {
  color: var(--text-main);
  background: var(--surface-hover);
  border-color: var(--border-color);
}
.welcome-mode-toggle:focus-visible {
  outline: none;
  box-shadow: var(--imp-focus-ring);
}
.welcome-mode-toggle i {
  font-size: 11px;
  opacity: 0.7;
}

.welcome-contact {
  margin: 4px 0 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  opacity: 0.55;
}
.welcome-contact a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}
.welcome-contact a:hover {
  color: var(--text-main);
  text-decoration: underline;
}

/* ═════════════════════════════════════════════════════════════════════════
   WELCOME MODAL — refined
   ═════════════════════════════════════════════════════════════════════════ */

dialog#welcome-modal.native-modal {
  max-width: 440px;
  padding: 32px 28px 24px;
  border-radius: 18px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-main);
  box-shadow:
    0 32px 80px -20px rgba(0, 0, 0, 0.4),
    0 0 0 1px var(--border-subtle);
}
dialog#welcome-modal.native-modal::backdrop {
  background: rgba(8, 12, 18, 0.5);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
dialog#welcome-modal .modal-header-img {
  width: 120px;
  height: 120px;
  margin: 0 auto 16px;
  display: block;
}
dialog#welcome-modal .modal-title {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin: 0 0 8px;
}
dialog#welcome-modal .modal-subtitle {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0 0 20px;
}
dialog#welcome-modal .modal-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 24px;
}
dialog#welcome-modal .modal-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--text-muted);
}
dialog#welcome-modal .modal-feature-icon {
  flex-shrink: 0;
  margin-top: 2px;
  width: 22px;
  text-align: center;
  font-size: 14px;
  color: var(--accent-text, var(--accent-primary));
}
dialog#welcome-modal .modal-feature-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
dialog#welcome-modal .modal-feature-text {
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.875rem;
}
dialog#welcome-modal .modal-feature-desc {
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.4;
}
dialog#welcome-modal form button[type="submit"] {
  width: 100%;
  height: 44px;
  border-radius: 12px;
  background: var(--imp-cta-bg);
  color: var(--imp-cta-fg);
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  box-shadow: var(--imp-cta-shadow);
  transition: filter 0.15s ease, transform 0.15s ease, box-shadow 0.18s ease;
}
dialog#welcome-modal form button[type="submit"]:hover {
  filter: brightness(1.04);
  transform: translateY(-1px);
  box-shadow: var(--imp-cta-shadow-hover);
}
dialog#welcome-modal form button[type="submit"]:focus-visible {
  outline: none;
  box-shadow: var(--imp-cta-shadow), var(--imp-focus-ring);
}
dialog#welcome-modal .modal-footer-note {
  margin: 12px 0 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  opacity: 0.75;
}

/* ═════════════════════════════════════════════════════════════════════════
   MOBILE — denser rhythm, edge-to-edge rows, 44px+ targets
   ═════════════════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  .sidebar .topic-card {
    padding: 12px !important;
    gap: 12px !important;
    min-height: 64px;
    border-radius: 0;
    border-top: none !important;
    border-left: none !important;
    border-right: none !important;
    border-bottom: 1px solid var(--border-subtle) !important;
    margin-bottom: 0;
    background-image: none !important;
  }
  .sidebar .topic-card:hover {
    background: var(--surface-hover) !important;
    box-shadow: none !important;
  }
  .sidebar .topic-card.active {
    background: var(--imp-row-active-bg) !important;
    border-bottom-color: var(--imp-row-active-border) !important;
    box-shadow: none !important;
  }
  .sidebar .topic-card.hot {
    background: rgba(255, 107, 53, 0.06) !important;
    border-bottom-color: rgba(255, 107, 53, 0.30) !important;
  }
  .sidebar .topic-card.pinned {
    background: color-mix(in srgb, var(--accent-primary) 6%, transparent) !important;
    border-bottom-color: color-mix(in srgb, var(--accent-primary) 28%, transparent) !important;
  }
  .sidebar .topic-card.topic-deleted {
    background: color-mix(in srgb, var(--accent-danger) 4%, transparent) !important;
    border-bottom-color: color-mix(in srgb, var(--accent-danger) 30%, transparent) !important;
  }
  .sidebar .topic-card.topic-noir {
    background: var(--imp-noir-tint) !important;
    border-bottom-color: var(--imp-noir-border) !important;
  }
  .sidebar .topic-card.topic-werewolf {
    background: var(--imp-werewolf-tint) !important;
    border-bottom-color: var(--imp-werewolf-border) !important;
  }
  .sidebar .topic-card .topic-author-avatar {
    width: 40px !important;
    height: 40px !important;
  }
  .sidebar .topic-card .topic-card-title {
    font-size: 14px !important;
    line-height: 1.35 !important;
  }
  .sidebar .topic-card .topic-card-meta-line {
    font-size: 11.5px !important;
  }

  #sidebar-topics {
    padding: 0;
  }

  .welcome-panel {
    padding: 32px 20px 28px;
  }
  .welcome-img-ring {
    width: 132px;
    height: 132px;
    border-radius: 22px;
  }
  .welcome-title {
    font-size: 1.375rem;
  }
  .welcome-subtitle {
    font-size: 0.875rem;
  }

  dialog#welcome-modal.native-modal {
    max-width: calc(100vw - 24px);
    padding: 24px 20px 20px;
  }
  dialog#welcome-modal .modal-header-img {
    width: 88px;
    height: 88px;
  }
}

/* ═════════════════════════════════════════════════════════════════════════
   REDUCED MOTION
   ═════════════════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  .sidebar .topic-card,
  .sidebar .topic-card *,
  .welcome-cta,
  .welcome-mode-toggle,
  .sidebar-action-bar .btn-create-topic,
  .sidebar-action-bar .sidebar-search-btn,
  dialog#welcome-modal form button[type="submit"] {
    transition-duration: 0.01ms !important;
    animation: none !important;
  }
  .sidebar .topic-card:active,
  .welcome-cta:active,
  .sidebar-action-bar .btn-create-topic:active,
  dialog#welcome-modal form button[type="submit"]:hover {
    transform: none !important;
  }
}