/* ========================================================================
   ChatGPT-Style Layout — chatgpt-layout.css
   Palette: Sidebar #171717 | Main #212121 | Hover #262626 | Border #2A2A2A
   Text: Primary #ECECEC | Secondary #A1A1AA | Muted #6B7280
   ======================================================================== */

/* ── Body Reset ── */
.cg-body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: var(--fs-base);
  color: hsl(var(--text-primary));
  background: hsl(var(--bg-primary));
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── App Container ── */
.cg-app {
  display: flex;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: hsl(var(--bg-primary));
}

.cg-app--no-sidebar .cg-main { width: 100%; }

/* ========================================================================
   SIDEBAR — 260px, #171717
   ======================================================================== */
.cg-sidebar {
  width: 260px;
  min-width: 260px;
  height: 100vh;
  background: hsl(var(--bg-secondary));
  border-right: 1px solid hsl(var(--border-color));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform var(--transition-fast);
  z-index: 100;
}

/* ── Logo — 16px / 600 ── */
.cg-sidebar-logo {
  padding: 16px 18px 8px;
}

.cg-sidebar-logo a {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: hsl(var(--text-primary));
  text-decoration: none;
  letter-spacing: -0.01em;
}

.cg-sidebar-logo a:hover { color: #fff; }

/* ── New Chat Button — 36px height ── */
.cg-sidebar-newchat {
  padding: 0 12px;
  margin: 8px 0;
}

.cg-btn-newchat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  height: 36px;
  padding: 0 var(--space-3);
  border: 1px solid hsl(var(--border-color));
  border-radius: var(--radius-md);
  background: hsl(var(--bg-primary));
  color: hsl(var(--text-primary));
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.cg-btn-newchat:hover,
.cg-btn-newchat:focus {
  background: hsl(var(--bg-hover));
  color: hsl(var(--text-primary));
  outline: none;
}

.cg-btn-newchat:active {
  transform: scale(0.98);
}

/* ── Nav Items — My Memories, Shared Twins ── */
.cg-sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: 4px 8px 0;
}

.cg-sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  height: 36px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  color: hsl(var(--text-secondary));
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  text-decoration: none !important;
  transition: background var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  margin-bottom: 2px;
}

.cg-sidebar-item:hover {
  background: hsl(var(--bg-hover));
  color: hsl(var(--text-primary));
  text-decoration: none !important;
}

.cg-sidebar-item:active {
  background: #e5e7eb;
  transform: scale(0.98);
}

.cg-sidebar-item.active {
  background: hsl(var(--bg-hover));
  color: hsl(var(--text-primary));
  font-weight: var(--fw-medium);
}

.cg-sidebar-badge {
  margin-left: auto;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: hsl(var(--text-secondary));
}

.cg-sidebar-badge--notify {
  background: #3b82f6;
  color: #fff;
  padding: 1px 6px;
  border-radius: 10px;
  font-size: 10px;
}

/* ── Submenu ── */
.cg-sidebar-submenu-wrapper {
  display: flex;
  flex-direction: column;
}

.cg-sidebar-submenu {
  display: flex !important; /* Keep Shared Twins always visible */
  flex-direction: column;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
}

.cg-chat-item {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  color: hsl(var(--text-secondary));
  text-decoration: none;
  border-radius: var(--radius-md);
  margin-bottom: 2px;
  transition: all var(--transition-fast);
  font-size: var(--fs-base) !important;
  gap: var(--space-2);
}

.cg-chat-item-avatar-wrapper {
  position: relative;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.cg-chat-item-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

.cg-chat-item-avatar-wrapper.venn {
  width: 32px;
  height: 24px;
}

.venn-img {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid #ffffff;
  object-fit: cover;
}

.user-venn {
  top: 0;
  left: 0;
  z-index: 1;
}

.twin-venn {
  bottom: 0;
  right: 0;
  z-index: 2;
}

.cg-chat-item.active {
  background: hsl(var(--bg-hover));
  color: hsl(var(--text-primary));
  font-weight: var(--fw-semibold);
}

.cg-chat-item-initials {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: hsl(var(--bg-secondary));
  color: hsl(var(--text-secondary));
  border-radius: 50%;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
}

.cg-chat-item-initials.tiny {
  width: 18px;
  height: 18px;
  font-size: 8px;
  position: absolute;
  bottom: 0;
  right: 0;
}
.cg-sidebar-submenu-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  height: 32px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  color: hsl(var(--text-secondary));
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  text-decoration: none !important;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
}

.cg-sidebar-submenu-item:hover,
.cg-sidebar-submenu-item.active {
  background: hsl(var(--bg-hover));
  color: hsl(var(--text-primary));
  font-weight: var(--fw-medium);
}

.submenu-chevron {
  transition: transform 0.2s ease;
}

.cg-sidebar-item.open .submenu-chevron {
  transform: rotate(180deg);
}

.cg-sidebar-avatar.tiny {
  width: 18px;
  height: 18px;
  font-size: 8px;
}

.cg-sidebar-avatar .avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cg-sidebar-avatar .avatar-initials {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

/* ── Divider ── */
.cg-sidebar-divider {
  height: 1px;
  margin: var(--space-3) var(--space-3);
  background: hsl(var(--border-color));
}

/* ── Section Label — YOUR CHATS ── */
.cg-sidebar-label,
.chatgpt-section-title,
.cg-sidebar-section-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: hsl(var(--text-secondary));
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0 var(--space-3);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

/* ── Chat List (scrollable) ── */
.cg-sidebar-chats {
  flex: 1;
  overflow-y: auto;
  padding: 0 8px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.06) transparent;
}

.cg-sidebar-chats::-webkit-scrollbar { width: 4px; }
.cg-sidebar-chats::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
}

.cg-sidebar-chats-empty {
  padding: 8px 12px;
  color: #6b7280;
  font-size: 13px;
}

/* Chat items — 32px height */
.cg-chat-item,
.chatgpt-conversation {
  display: flex;
  align-items: center;
  height: 34px;
  padding: 0 12px;
  margin-bottom: 2px;
  border-radius: 6px;
  color: #4b5563;
  font-size: 13px;
  text-decoration: none !important;
  cursor: pointer;
  transition: background 0.12s ease;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cg-chat-item:hover,
.chatgpt-conversation:hover {
  background: #ececec;
  color: #111827;
}

.cg-chat-item.active,
.chatgpt-conversation.active {
  background: hsl(var(--bg-hover));
  color: hsl(var(--text-primary));
  text-decoration: none !important;
}

/* ── Spacer ── */
.cg-sidebar-spacer { flex: 1; }

/* ── Profile (sidebar bottom) ── */
.cg-sidebar-profile {
  position: relative;
  padding: var(--space-2) var(--space-2) var(--space-3);
  border-top: 1px solid hsl(var(--border-color));
}

.cg-sidebar-profile-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px;
  border: none;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  transition: background 0.15s ease;
  text-align: left;
}

.cg-sidebar-profile-btn:hover { background: hsl(var(--bg-hover)); }

.cg-sidebar-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: hsl(var(--bg-secondary));
  color: hsl(var(--text-primary));
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}

.cg-sidebar-profile-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.cg-sidebar-profile-name {
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  color: hsl(var(--text-primary));
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cg-sidebar-profile-archetype {
  font-size: var(--fs-sm);
  color: hsl(var(--text-secondary));
  line-height: 1.2;
}

/* ── Profile Popover Menu ── */
.cg-sidebar-profile-menu {
  position: absolute;
  bottom: 100%;
  left: var(--space-2);
  right: var(--space-2);
  background: hsl(var(--bg-primary));
  border: 1px solid hsl(var(--border-color));
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  padding: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: all var(--transition-fast);
  z-index: 200;
}

.cg-sidebar-profile-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(-4px);
}

.cg-profile-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: hsl(var(--text-primary));
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  text-decoration: none !important;
  transition: all var(--transition-fast);
}

.cg-profile-menu-item:hover,
.cg-profile-menu-item:focus {
  background: #f1f5f9;
  color: #111827;
  text-decoration: none !important;
  outline: none;
}

.cg-profile-menu-item:active {
  background: #e2e8f0;
  transform: scale(0.98);
}

.cg-profile-menu-divider {
  height: 1px;
  margin: 4px 8px;
  background: #f1f5f9;
}

.cg-profile-menu-item--logout { color: #dc2626; }
.cg-profile-menu-item--logout:hover { background: #fef2f2; color: #b91c1c; text-decoration: none !important; }

/* ========================================================================
   MAIN CONTENT AREA
   ======================================================================== */
.cg-main {
  flex: 1;
  min-height: 100vh;
  overflow-y: auto;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 40px 20px;
}

.cg-main--chat {
  /* Chat page handles its own scroll regions (sidebar + message list). */
  overflow: hidden;
  align-items: stretch;
  justify-content: stretch;
  padding: 0;
}

/* ── Sidebar Toggle (mobile) ── */
.cg-sidebar-toggle {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 90;
  background: transparent;
  border: none;
  color: #a1a1aa;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  transition: background 0.15s ease;
  display: none;
}

.cg-sidebar-toggle:hover { background: #262626; color: #fff; }

/* ========================================================================
   FOCUS STATES (keyboard)
   ======================================================================== */
.cg-btn-newchat:focus-visible,
.cg-sidebar-item:focus-visible,
.cg-chat-item:focus-visible,
.chatgpt-conversation:focus-visible,
.cg-sidebar-profile-btn:focus-visible,
.cg-profile-menu-item:focus-visible,
.cg-sidebar-toggle:focus-visible {
  outline: 2px solid rgba(236, 236, 236, 0.35);
  outline-offset: 2px;
}

/* ========================================================================
   RESPONSIVE
   ======================================================================== */
@media (max-width: 768px) {
  .cg-sidebar {
    position: fixed;
    top: 0; left: 0;
    transform: translateX(-100%);
    z-index: 200;
    box-shadow: 4px 0 24px rgba(0,0,0,0.3);
  }

  .cg-sidebar.cg-sidebar--open { transform: translateX(0); }
  .cg-sidebar-toggle { display: block; }
  .cg-main { width: 100%; height: 100vh; overflow-y: auto; overflow-x: hidden; }
  .cg-main--chat { overflow: hidden; }
}

@media (max-width: 480px) {
  .cg-sidebar { width: 100%; min-width: 100%; }
}

/* ========================================================================
   OVERRIDE old site styles
   ======================================================================== */
.cg-body .site-header,
.cg-body .site-footer,
.cg-body .site-shell { display: none !important; }

.cg-body .site-main,
.cg-body .site-main--fluid {
  padding: 0 !important;
  margin: 0 !important;
  max-width: none !important;
  min-height: auto !important;
}