/* ══════════════════════════════════════════
   ZENITH — Styles
   ══════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; height: 100%; font-family: Inter, system-ui, -apple-system, sans-serif; }

body {
  background: #f4f4f5;
  color: #111;
  -webkit-font-smoothing: antialiased;
}

/* ── Dark Mode ─────────────────────────── */
html.dark body { background: #0a0a0a; color: #f0f0f0; }

html.dark .sidebar {
  background: rgba(14,14,14,0.98);
  border-right-color: rgba(255,255,255,0.07);
}
html.dark .sidebar-header { border-bottom-color: rgba(255,255,255,0.06); }
html.dark .brand-name { color: #f0f0f0; }
html.dark .section-label { color: #555; }
html.dark .nav-item { color: #aaa; }
html.dark .nav-item:hover { background: rgba(255,255,255,0.06); color: #f0f0f0; }
html.dark .nav-item.active { background: #f0f0f0; color: #111; }
html.dark .btn-new-chat { background: rgba(255,255,255,0.05); color: #f0f0f0; }
html.dark .btn-new-chat:hover { background: rgba(255,255,255,0.09); }
html.dark .btn-icon { color: #888; }
html.dark .btn-icon:hover { background: rgba(255,255,255,0.08); color: #f0f0f0; }
html.dark .sidebar-user { border-top-color: rgba(255,255,255,0.07); }
html.dark .user-dn { color: #f0f0f0; }
html.dark .user-un { color: #555; }
html.dark .avatar-fallback { background: #222; }
html.dark .main-area { background: rgba(10,10,10,0.97); }
html.dark .messages-area::-webkit-scrollbar-thumb { background: #333; }
html.dark .empty-state { color: #aaa; }
html.dark .empty-state p { color: #555; }
html.dark .z-icon { background: #222; }
html.dark .msg-bubble { background: #e8e8e8; color: #111; }
html.dark .ai-avatar { background: #222; border: 1px solid rgba(255,255,255,0.15); }
html.dark .ai-name { color: #f0f0f0; }
html.dark .ai-text { color: #d0d0d0; }
html.dark .ai-text strong { color: #f0f0f0; }
html.dark .ai-text code { background: #1e1e1e; color: #d0d0d0; }
html.dark .ai-text pre { background: #161616; border: 1px solid #2a2a2a; }
html.dark .input-area { background: rgba(10,10,10,0.97); }
html.dark .input-wrap { background: transparent; border-color: transparent; }
html.dark .input-wrap:focus-within { border-color: transparent; }
html.dark #chat-input { color: #f0f0f0; }
html.dark #chat-input::placeholder { color: #555; }
html.dark .input-note { color: #444; }
html.dark .activity-panel { background: rgba(20,20,20,0.95); border-color: rgba(255,255,255,0.07); }
html.dark .activity-left span:last-child { color: #aaa; }
html.dark .pulse-ring { background: #f0f0f0; }
html.dark .pulse-ring::before { border-color: #f0f0f0; }
html.dark .activity-body { background: transparent; }
html.dark .act-item { color: #aaa; }
html.dark .glass { background: rgba(20,20,20,0.97); border-color: rgba(255,255,255,0.08); box-shadow: 0 24px 60px rgba(0,0,0,0.5); }
html.dark .modal h3 { color: #f0f0f0; }
html.dark .modal p { color: #888; }
html.dark .modal-input { background: #1c1c1c; border-color: #333; color: #f0f0f0; }
html.dark .modal-input:focus { border-color: #666; }
html.dark .btn-secondary { background: #2a2a2a; color: #aaa; }
html.dark .btn-secondary:hover { background: #333; }
html.dark .ai-status-card { background: #111; border-color: rgba(255,255,255,0.06); }
html.dark .ai-status-label { color: #aaa; }
html.dark .ai-model-name { color: #666; }
html.dark .ai-fallback-badge { background: #1e1e1e; color: #555; }
html.dark .ai-fallback-badge.active { background: rgba(34,197,94,0.15); color: #22c55e; }
html.dark .chat-item:hover { background: rgba(255,255,255,0.05); }
html.dark .chat-item.active { background: rgba(255,255,255,0.07); }
html.dark .chat-sel { color: #aaa; }
html.dark .chat-item.active .chat-sel { color: #f0f0f0; }
html.dark .act-btn:hover { background: #333; color: #f0f0f0; }
html.dark .landing-bg { background: linear-gradient(180deg, #0a0a0a 0%, #111 60%, #000 100%); }
html.dark .landing-card { background: rgba(20,20,20,0.97); }
html.dark .landing-card h1 { color: #f0f0f0; }
html.dark .landing-card p { color: #888; }
html.dark .btn-primary { background: #f0f0f0; color: #111; }
html.dark .settings-page { color: #f0f0f0; }
html.dark .settings-header p { color: #888; }
html.dark .settings-section { border-color: rgba(255,255,255,0.07); }
html.dark .settings-label { color: #888; }
html.dark .settings-opt { background: #1c1c1c; color: #aaa; border-color: #2a2a2a; }
html.dark .settings-opt:hover { background: #252525; }
html.dark .settings-opt.active { background: #f0f0f0; color: #111; border-color: #f0f0f0; }
html.dark .msg-act-btn { color: #555; }
html.dark .msg-act-btn:hover { color: #aaa; background: rgba(255,255,255,0.06); }
html.dark .msg-act-btn.liked { color: #60a5fa; }
html.dark .msg-more-popup { background: #1c1c1c; border-color: #333; }
html.dark .more-row { color: #aaa; border-bottom-color: #2a2a2a; }
html.dark .more-row span:first-child { color: #555; }
html.dark .paste-chip { background: #1e1e1e; border-color: #333; color: #aaa; }
html.dark .plus-menu { background: #1c1c1c; border-color: #333; }
html.dark .plus-item { color: #aaa; }
html.dark .plus-item:hover { background: rgba(255,255,255,0.06); }
html.dark .mode-chip { background: #1e1e1e; color: #aaa; border-color: #333; }
html.dark .btn-plus { color: #888; }
html.dark .btn-plus:hover { background: rgba(255,255,255,0.08); }
html.dark .stop-note { color: #888; }

/* ── Hidden ──────────────────────────── */
.hidden { display: none !important; }

/* ── Z Icon ───────────────────────────── */
.z-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: #111;
  color: #fff;
  display: grid; place-items: center;
  font-size: 1.3rem; font-weight: 800;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.z-icon.sm  { width: 32px; height: 32px; border-radius: 10px; font-size: 0.9rem; }
.z-icon.lg  { width: 64px; height: 64px; border-radius: 20px; font-size: 1.8rem; margin: 0 auto 20px; }

/* ── Buttons ──────────────────────────── */
button { cursor: pointer; border: none; background: none; font: inherit; outline: none; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px;
  background: #111; color: #fff;
  border-radius: 14px;
  font-size: 0.95rem; font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  margin-top: 32px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(0,0,0,0.22); }

.btn-primary-sm {
  padding: 10px 20px;
  background: #111; color: #fff;
  border-radius: 10px;
  font-size: 0.875rem; font-weight: 600;
  transition: opacity 0.15s;
}
.btn-primary-sm:hover { opacity: 0.8; }

.btn-secondary {
  padding: 10px 20px;
  background: #f3f4f6; color: #374151;
  border-radius: 10px;
  font-size: 0.875rem; font-weight: 500;
  transition: background 0.15s;
}
.btn-secondary:hover { background: #e5e7eb; }

.btn-danger {
  padding: 10px 20px;
  background: #fee2e2; color: #dc2626;
  border-radius: 10px;
  font-size: 0.875rem; font-weight: 600;
  transition: background 0.15s;
}
.btn-danger:hover { background: #fecaca; }

.btn-icon {
  display: grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: 8px;
  color: #6b7280;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.btn-icon:hover { background: #f3f4f6; color: #111; }

/* ── Landing ──────────────────────────── */
.landing-shell {
  min-height: 100vh;
  display: grid; place-items: center;
  position: relative;
}
.landing-bg {
  position: fixed; inset: 0; z-index: -1;
  background: linear-gradient(180deg, #fff 0%, #e8e8e8 45%, #111 100%);
}
.landing-bg::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 10%, rgba(255,255,255,0.3) 0%, transparent 40%),
    radial-gradient(circle at 80% 90%, rgba(0,0,0,0.2) 0%, transparent 35%);
}
.landing-center { padding: 40px 20px; width: 100%; display: grid; place-items: center; }
.landing-card {
  width: min(520px, 100%);
  background: rgba(255,255,255,0.92);
  border-radius: 32px;
  padding: 52px 48px;
  box-shadow: 0 40px 100px rgba(0,0,0,0.14);
  backdrop-filter: blur(20px);
}
.landing-logo { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
.z-label { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.22em; color: #6b7280; }
.landing-card h1 { margin: 0; font-size: clamp(2.4rem, 4vw, 3.6rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1.05; }
.landing-card p  { margin: 20px 0 0; color: #4b5563; line-height: 1.75; font-size: 1rem; }

/* ── Main Menu ────────────────────────── */
@keyframes mmFloat1 {
  0%, 100% { transform: translateX(0) translateY(0) scale(1); }
  33%  { transform: translateX(-40px) translateY(-30px) scale(1.05); }
  66%  { transform: translateX(30px) translateY(20px) scale(0.97); }
}
@keyframes mmFloat2 {
  0%, 100% { transform: translateX(0) translateY(0) scale(1); }
  33%  { transform: translateX(50px) translateY(20px) scale(1.03); }
  66%  { transform: translateX(-20px) translateY(-40px) scale(1.06); }
}
@keyframes mmFloat3 {
  0%, 100% { transform: translateX(0) translateY(0) scale(1); }
  50%  { transform: translateX(-30px) translateY(40px) scale(1.04); }
}
@keyframes mmFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes mmAvatarPop {
  from { opacity: 0; transform: scale(0.8); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes cursorBlink {
  0%, 100% { opacity: 1; } 50% { opacity: 0; }
}

.main-menu-shell {
  position: fixed; inset: 0; z-index: 500;
  display: grid; place-items: center;
  background: #f8f8f8;
  overflow: hidden;
}
html.dark .main-menu-shell { background: #0a0a0a; }

#mm-bg {
  position: absolute; inset: 0; pointer-events: none;
}

.mm-orb {
  position: absolute;
  border-radius: 50%;
}
.mm-orb1 {
  width: 60vw; height: 60vw; max-width: 700px; max-height: 700px;
  background: radial-gradient(circle, rgba(0,0,0,0.04) 0%, transparent 70%);
  top: -20%; left: -10%;
  animation: mmFloat1 12s ease-in-out infinite;
}
.mm-orb2 {
  width: 50vw; height: 50vw; max-width: 600px; max-height: 600px;
  background: radial-gradient(circle, rgba(0,0,0,0.03) 0%, transparent 70%);
  bottom: -15%; right: -10%;
  animation: mmFloat2 15s ease-in-out infinite;
}
.mm-orb3 {
  width: 40vw; height: 40vw; max-width: 500px; max-height: 500px;
  background: radial-gradient(circle, rgba(0,0,0,0.02) 0%, transparent 70%);
  top: 30%; right: 20%;
  animation: mmFloat3 10s ease-in-out infinite;
}
html.dark .mm-orb1 { background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%); }
html.dark .mm-orb2 { background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%); }
html.dark .mm-orb3 { background: radial-gradient(circle, rgba(255,255,255,0.02) 0%, transparent 70%); }

.mm-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
html.dark .mm-grid {
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
}

.mm-content {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
  text-align: center;
  padding: 40px 24px;
  animation: mmFadeIn 0.7s cubic-bezier(0.22,1,0.36,1) both;
}

.mm-avatar-wrap {
  width: 80px; height: 80px;
  border-radius: 50%;
  position: relative;
  background: #e5e7eb;
  animation: mmAvatarPop 0.6s cubic-bezier(0.22,1,0.36,1) 0.2s both;
}
html.dark .mm-avatar-wrap { background: #222; }

.mm-avatar-fallback {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: #111;
  color: #fff;
  display: grid; place-items: center;
  font-size: 2rem; font-weight: 800;
}
html.dark .mm-avatar-fallback { background: #333; }

.mm-online-dot {
  position: absolute; bottom: 4px; right: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #22c55e;
  border: 2px solid #f8f8f8;
  box-shadow: 0 0 6px rgba(34,197,94,0.6);
}
html.dark .mm-online-dot { border-color: #0a0a0a; }

.mm-username {
  font-size: 0.9rem; font-weight: 600; color: #6b7280;
  letter-spacing: 0.02em;
}
html.dark .mm-username { color: #666; }

.mm-title {
  margin: 0;
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #111;
  min-height: 1.3em;
}
html.dark .mm-title { color: #f0f0f0; }

.mm-cursor {
  display: inline;
  animation: cursorBlink 0.9s step-end infinite;
  margin-left: 2px;
  color: #111;
}
html.dark .mm-cursor { color: #f0f0f0; }

.mm-sub {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: #6b7280;
}
html.dark .mm-sub { color: #666; }

.btn-enter {
  margin-top: 8px;
  padding: 12px 32px;
  background: transparent;
  border: 1.5px solid rgba(0,0,0,0.18);
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #374151;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.18s, box-shadow 0.18s;
  letter-spacing: 0.02em;
}
.btn-enter:hover {
  background: rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}
html.dark .btn-enter {
  border-color: rgba(255,255,255,0.15);
  color: #aaa;
}
html.dark .btn-enter:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.3);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

/* ── App Shell ────────────────────────── */
.app-shell {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar ──────────────────────────── */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid #e5e7eb;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* Collapsed: icons only */
.sidebar.collapsed { width: 60px; }
.sidebar.collapsed .sidebar-text { display: none !important; }
.sidebar.collapsed .sidebar-brand { justify-content: center; }
.sidebar.collapsed .sidebar-header { justify-content: center; padding: 16px 0 12px; }
.sidebar.collapsed .btn-new-chat { justify-content: center; padding: 10px; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 10px; }
.sidebar.collapsed .sidebar-user { justify-content: center; }
.sidebar.collapsed .user-meta { display: none; }
.sidebar.collapsed .btn-logout { display: none; }
.sidebar.collapsed .ai-status-card .ai-status-meta,
.sidebar.collapsed .ai-status-card .ai-fallback-row { display: none; }
.sidebar.collapsed .section-label { text-align: center; padding: 8px 0 4px; font-size: 0.55rem; }

/* Expand button visible when collapsed — show on left edge */
.sidebar.collapsed #btn-collapse {
  position: relative;
}

/* Floating reopen button shown when sidebar is fully collapsed */
#btn-sidebar-reopen {
  display: none;
  position: fixed;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 200;
  width: 36px; height: 36px;
  border-radius: 12px;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  box-shadow: 0 4px 14px rgba(0,0,0,0.12);
  cursor: pointer;
  align-items: center; justify-content: center;
  transition: background 0.2s, box-shadow 0.2s;
}
#btn-sidebar-reopen:hover { background: #f0f0f0; box-shadow: 0 4px 18px rgba(0,0,0,0.18); }
html.dark #btn-sidebar-reopen { background: #1e1e1e; border-color: #333; }
html.dark #btn-sidebar-reopen:hover { background: rgba(255,255,255,0.1); }
body.sidebar-collapsed #btn-sidebar-reopen { display: flex; }

.sidebar-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 14px 12px;
  border-bottom: 1px solid #f3f4f6;
}
.sidebar-brand { display: flex; align-items: center; gap: 10px; overflow: hidden; }
.brand-name {
  font-size: 0.95rem; font-weight: 700; letter-spacing: -0.01em;
  white-space: nowrap; overflow: hidden;
}

.sidebar-top { padding: 12px 12px 4px; }
.btn-new-chat {
  width: 100%;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: #f9fafb;
  border-radius: 10px;
  font-size: 0.875rem; font-weight: 500; color: #111;
  transition: background 0.15s;
  white-space: nowrap;
}
.btn-new-chat:hover { background: #f3f4f6; }

.sidebar-nav, .sidebar-section { padding: 4px 8px; }
.section-label {
  font-size: 0.68rem; font-weight: 600; letter-spacing: 0.1em;
  color: #9ca3af; padding: 10px 8px 4px;
  white-space: nowrap;
}
.nav-item {
  width: 100%;
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.875rem; font-weight: 500; color: #374151;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  overflow: hidden;
}
.nav-item:hover         { background: #f3f4f6; color: #111; }
.nav-item.active        { background: #111; color: #fff; }
.nav-item.active:hover  { background: #222; }
.nav-item svg           { flex-shrink: 0; }

/* Recent chats */
.sidebar-recent { flex: 1; overflow-y: auto; padding: 0 8px; min-height: 0; }
.sidebar-recent::-webkit-scrollbar { width: 4px; }
.sidebar-recent::-webkit-scrollbar-thumb { background: #e5e7eb; border-radius: 4px; }

#recent-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }

.chat-item {
  display: flex; align-items: center;
  border-radius: 8px;
  overflow: hidden;
  transition: background 0.13s;
  position: relative;
}
.chat-item:hover { background: #f3f4f6; }
.chat-item.active { background: #f3f4f6; }

.chat-sel {
  flex: 1; min-width: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px;
  font-size: 0.83rem; color: #374151; font-weight: 500;
  text-align: left;
  overflow: hidden;
}
.chat-sel span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-sel svg  { flex-shrink: 0; color: #9ca3af; }
.chat-item.active .chat-sel { color: #111; }

.chat-acts {
  display: flex; gap: 2px; padding-right: 6px;
  opacity: 0;
  transition: opacity 0.13s;
}
.chat-item:hover .chat-acts { opacity: 1; }

.act-btn {
  display: grid; place-items: center;
  width: 26px; height: 26px;
  border-radius: 6px;
  color: #9ca3af;
  transition: background 0.13s, color 0.13s;
}
.act-btn:hover { background: #e5e7eb; color: #111; }

/* User section */
.sidebar-user {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid #f3f4f6;
  overflow: hidden;
}
.user-avatar-wrap {
  width: 36px; height: 36px; flex-shrink: 0; position: relative;
}
.user-avatar-wrap img {
  width: 36px; height: 36px;
  border-radius: 50%;
  object-fit: cover;
}
.avatar-fallback {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: #111; color: #fff;
  display: grid; place-items: center;
  font-size: 0.9rem; font-weight: 700;
  flex-shrink: 0;
}
.user-meta { flex: 1; min-width: 0; }
.user-dn { font-size: 0.85rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-un { font-size: 0.75rem; color: #9ca3af; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Main Area ────────────────────────── */
.main-area {
  flex: 1;
  display: flex; flex-direction: column;
  overflow: hidden;
  background: #f9fafb;
}

.panel { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

/* ── Settings Page ────────────────────── */
.settings-page {
  flex: 1; overflow-y: auto;
  padding: 40px 40px 60px;
  max-width: 640px;
  width: 100%;
  align-self: center;
}
.settings-header { margin-bottom: 36px; }
.settings-header h2 { margin: 0 0 8px; font-size: 1.5rem; font-weight: 800; letter-spacing: -0.02em; }
.settings-header p { margin: 0; color: #6b7280; font-size: 0.95rem; }
.settings-section {
  border-top: 1px solid #e5e7eb;
  padding: 28px 0;
}
.settings-label {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: #9ca3af;
  margin-bottom: 14px;
}
.settings-options { display: flex; gap: 10px; flex-wrap: wrap; }
.settings-opt {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: #f9fafb;
  border: 1.5px solid #e5e7eb;
  border-radius: 10px;
  font-size: 0.875rem; font-weight: 500;
  color: #374151;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.settings-opt:hover { background: #f3f4f6; border-color: #d1d5db; }
.settings-opt.active { background: #111; color: #fff; border-color: #111; }
.opt-flag { font-size: 1.1rem; }

/* ── Messages ─────────────────────────── */
.messages-area {
  flex: 1;
  overflow-y: auto;
  padding: 32px 0 16px;
  display: flex; flex-direction: column;
  gap: 4px;
}
.messages-area::-webkit-scrollbar { width: 5px; }
.messages-area::-webkit-scrollbar-thumb { background: #e5e7eb; border-radius: 4px; }

.empty-state {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 40px 20px;
  color: #374151;
}
.empty-state h2 { margin: 0 0 10px; font-size: 1.5rem; font-weight: 700; }
.empty-state p  { margin: 0; color: #9ca3af; font-size: 0.95rem; }

/* Messages */
.msg { padding: 4px 28px; max-width: 780px; width: 100%; margin: 0 auto; }

.msg-user { display: flex; justify-content: flex-end; }
.msg-bubble {
  max-width: 72%;
  background: #111; color: #fff;
  padding: 12px 16px;
  border-radius: 18px 18px 4px 18px;
  font-size: 1rem; line-height: 1.6;
  word-break: break-word;
}

.msg-ai { display: flex; align-items: flex-start; gap: 14px; }
.ai-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: #111; color: #fff;
  border: 1.5px solid rgba(0,0,0,0.2);
  display: grid; place-items: center;
  font-size: 0.85rem; font-weight: 800;
  flex-shrink: 0; margin-top: 2px;
}
.msg-content { flex: 1; min-width: 0; }
.ai-name { font-size: 0.8rem; font-weight: 700; color: #111; margin-bottom: 6px; letter-spacing: 0.01em; }
.ai-text { font-size: 1rem; line-height: 1.75; color: #1f2937; }
.ai-text p { margin: 0 0 10px; }
.ai-text p:last-child { margin-bottom: 0; }
.ai-text strong { font-weight: 700; color: #111; }
.ai-text code {
  font-family: 'JetBrains Mono', 'Fira Code', Menlo, monospace;
  background: #f3f4f6;
  color: #111;
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 0.85em;
}
.ai-text pre {
  background: #f8f8f8;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 10px 0;
}
.ai-text pre code { background: none; padding: 0; font-size: 0.85rem; }

.stop-note {
  margin-top: 8px;
  font-size: 0.82rem;
  color: #9ca3af;
  font-style: italic;
}

/* ── Paste Chips ──────────────────────── */
.paste-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.82rem; font-weight: 500; color: #374151;
}
.chip-lines { color: #9ca3af; }

/* ── Message Actions ──────────────────── */
.msg-actions {
  display: flex; align-items: center; gap: 2px;
  margin-top: 8px;
  flex-wrap: wrap;
}
.msg-act-btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.78rem; font-weight: 500;
  color: #9ca3af;
  transition: color 0.15s, background 0.15s;
}
.msg-act-btn:hover { color: #374151; background: #f3f4f6; }
.msg-act-btn.liked { color: #3b82f6; }

.msg-act-more-wrap { position: relative; }
.msg-more-popup {
  position: absolute; bottom: calc(100% + 6px); left: 0;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 8px 0;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  z-index: 100;
  min-width: 180px;
  white-space: nowrap;
}
.more-row {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 6px 14px;
  font-size: 0.8rem;
  color: #374151;
  border-bottom: 1px solid #f3f4f6;
}
.more-row:last-child { border-bottom: none; }
.more-row span:first-child { color: #9ca3af; font-weight: 500; }

/* ── Activity Panel ───────────────────── */
.activity-panel {
  margin: 0 28px 12px;
  max-width: 780px;
  width: calc(100% - 56px);
  align-self: center;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(0,0,0,0.07);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.activity-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
}
.activity-left { display: flex; align-items: center; gap: 10px; }
.activity-left span:last-child { font-size: 0.85rem; font-weight: 500; color: #374151; }

.pulse-ring {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #111;
  position: relative;
  flex-shrink: 0;
}
.pulse-ring::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid #111;
  opacity: 0.4;
  animation: pulse 1.4s ease-out infinite;
}
@keyframes pulse {
  0%   { transform: scale(0.9); opacity: 0.5; }
  70%  { transform: scale(1.4); opacity: 0; }
  100% { transform: scale(0.9); opacity: 0; }
}

.activity-chevron { transition: transform 0.2s ease; }
.activity-chevron.flipped { transform: rotate(180deg); }

.activity-body { display: none; padding: 0 14px 12px; }
.activity-body.open { display: block; }

.act-group { margin-bottom: 10px; }
.act-group:last-child { margin-bottom: 0; }
.act-phase {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; margin-bottom: 4px;
}
.act-phase.thinking { color: #6366f1; }
.act-phase.working  { color: #f59e0b; }
.act-phase.actions  { color: #10b981; }
.act-phase.finished { color: #111; }
.act-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: #374151; padding: 2px 0;
}
.act-item svg { color: #10b981; flex-shrink: 0; }

/* ── Input Area ───────────────────────── */
.plus-menu-wrap { position: relative; display: inline-block; margin: 0 28px 4px; align-self: flex-start; }
.btn-plus {
  display: grid; place-items: center;
  width: 28px; height: 28px;
  border-radius: 8px;
  color: #6b7280;
  border: 1px solid #e5e7eb;
  transition: background 0.15s, color 0.15s;
}
.btn-plus:hover { background: #f3f4f6; color: #111; }

.plus-menu {
  position: absolute; bottom: calc(100% + 8px); left: 0;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  z-index: 200;
  min-width: 170px;
}
.plus-item {
  width: 100%;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.85rem; font-weight: 500; color: #374151;
  transition: background 0.13s;
}
.plus-item:hover { background: #f3f4f6; }
.plus-item span:last-child { margin-left: auto; }
.plus-check { font-size: 0.8rem; color: #10b981; font-weight: 700; }

.mode-chips {
  display: flex; gap: 6px; flex-wrap: wrap;
  padding: 0 28px 4px;
  max-width: 836px; width: 100%; align-self: center;
}
.mode-chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 20px;
  font-size: 0.78rem; font-weight: 500; color: #166534;
}
.mode-chip button {
  background: none; border: none; cursor: pointer;
  color: #16a34a; font-size: 0.85rem; line-height: 1;
  padding: 0 0 0 2px;
}

.input-area {
  padding: 4px 28px 20px;
  background: #f9fafb;
  max-width: 836px;
  width: 100%;
  align-self: center;
  display: flex; flex-direction: column;
}
/* ── Orbiting light around chat input ── */
@keyframes ziOrbit {
  to { transform: translate(-50%,-50%) rotate(360deg); }
}
.input-glow-wrap {
  position: relative;
  border-radius: 18px;
  padding: 2px;
  overflow: hidden;
  background: transparent;
}
.input-glow-wrap::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 200%; height: 200%;
  transform: translate(-50%,-50%) rotate(0deg);
  background: conic-gradient(from 0deg, transparent 310deg, #a855f7 340deg, #e879f9 348deg, #38bdf8 355deg, transparent 360deg);
  animation: ziOrbit 2.2s linear infinite;
  z-index: 0;
}
.input-glow-inner {
  position: relative;
  z-index: 1;
  border-radius: 16px;
  background: #fff;
  overflow: hidden;
}
html.dark .input-glow-inner { background: #1c1c1c; }

.input-wrap {
  display: flex; align-items: flex-end; gap: 8px;
  background: transparent;
  border: none;
  border-radius: 16px;
  padding: 10px 10px 10px 16px;
  box-shadow: none;
  transition: none;
}
.input-wrap:focus-within {
  border-color: transparent;
  box-shadow: none;
}
#chat-input {
  flex: 1;
  resize: none;
  border: none;
  outline: none;
  font: inherit;
  font-size: 1rem;
  color: #111;
  background: transparent;
  line-height: 1.6;
  max-height: 200px;
  overflow-y: auto;
}
#chat-input::placeholder { color: #9ca3af; }
.input-btns { display: flex; align-items: center; gap: 4px; }
.btn-send {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: #111; color: #fff;
  transition: opacity 0.15s, transform 0.15s, background 0.15s;
}
.btn-send:hover { opacity: 0.85; transform: scale(1.05); }
.btn-send.btn-stop { background: #ef4444; }
.btn-send.btn-stop:hover { background: #dc2626; opacity: 1; }
.input-note { margin: 8px 0 0; font-size: 0.75rem; color: #9ca3af; text-align: center; }

/* ── AFK Overlay ──────────────────────── */
.afk-overlay {
  position: fixed; inset: 0; z-index: 900;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(16px);
  display: grid; place-items: center;
  padding: 20px;
}
.afk-card {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(24px);
  border-radius: 24px;
  padding: 48px 40px;
  text-align: center;
  display: flex; flex-direction: column; gap: 16px; align-items: center;
  box-shadow: 0 32px 80px rgba(0,0,0,0.2);
  max-width: 380px; width: 100%;
}
html.dark .afk-card { background: rgba(20,20,20,0.97); }
.afk-icon { font-size: 2.8rem; line-height: 1; }
.afk-card h3 { margin: 0; font-size: 1.2rem; font-weight: 800; letter-spacing: -0.02em; }
html.dark .afk-card h3 { color: #f0f0f0; }
.btn-afk-continue {
  padding: 12px 28px;
  background: #111; color: #fff;
  border-radius: 12px;
  font-size: 0.9rem; font-weight: 600;
  transition: opacity 0.15s, transform 0.15s;
}
.btn-afk-continue:hover { opacity: 0.85; transform: translateY(-1px); }
html.dark .btn-afk-continue { background: #f0f0f0; color: #111; }

/* ── Community Modal ──────────────────── */
.modal-icon.discord-icon {
  background: #5865f2;
  color: #fff;
}
.btn-discord {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 24px;
  background: #5865f2; color: #fff;
  border-radius: 12px;
  font-size: 0.9rem; font-weight: 700;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.15s;
  width: 100%;
}
.btn-discord:hover { opacity: 0.9; transform: translateY(-1px); }

/* ── Modals ───────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(6px);
  display: grid; place-items: center;
  padding: 20px;
}
.modal {
  width: min(400px, 100%);
  border-radius: 20px;
  padding: 32px;
  display: flex; flex-direction: column; gap: 18px;
  transform: scale(0.92); opacity: 0;
  transition: transform 0.22s cubic-bezier(0.34,1.56,0.64,1), opacity 0.18s ease;
}
.modal.in  { transform: scale(1); opacity: 1; }
.modal.out { transform: scale(0.92); opacity: 0; }

.glass {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 24px 60px rgba(0,0,0,0.16);
}

.modal-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: #f3f4f6;
  display: grid; place-items: center;
  color: #374151;
}
.modal-icon.danger { background: #fee2e2; color: #dc2626; }

.modal h3 { margin: 0; font-size: 1.05rem; font-weight: 700; }
.modal p  { margin: 0; font-size: 0.9rem; color: #6b7280; line-height: 1.6; }

.modal-input {
  width: 100%;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 10px 14px;
  font: inherit;
  font-size: 0.9rem;
  color: #111;
  outline: none;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.modal-input:focus { border-color: #111; box-shadow: 0 0 0 3px rgba(0,0,0,0.07); }

.modal-actions { display: flex; justify-content: flex-end; gap: 8px; }

/* ── Scrollbar global ─────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #e5e7eb; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #d1d5db; }

/* ── AI Status Component ──────────────── */
.ai-status-card {
  margin: 2px 0 4px;
  padding: 10px 10px 8px;
  background: #f9fafb;
  border-radius: 10px;
  border: 1px solid #f3f4f6;
  display: flex; flex-direction: column; gap: 7px;
  transition: background 0.15s;
}
.ai-status-row { display: flex; align-items: center; gap: 8px; }
.ai-status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: #d1d5db;
  transition: background 0.3s, box-shadow 0.3s;
}
.ai-status-dot.online  { background: #22c55e; box-shadow: 0 0 6px rgba(34,197,94,0.55); }
.ai-status-dot.offline { background: #ef4444; box-shadow: 0 0 6px rgba(239,68,68,0.45); }
.ai-status-dot.checking {
  background: #f59e0b;
  box-shadow: 0 0 6px rgba(245,158,11,0.45);
  animation: pulseAmber 1.4s ease-in-out infinite;
}
@keyframes pulseAmber { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.ai-status-label { font-size: 0.78rem; font-weight: 600; color: #374151; white-space: nowrap; }
.ai-status-meta { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

.ai-meta-chip {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 7px;
  background: #111; color: #fff;
  border-radius: 20px;
  white-space: nowrap; flex-shrink: 0;
}
.ai-model-name {
  font-size: 0.72rem; color: #6b7280; font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 110px;
}
.ai-fallback-row { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.ai-fallback-badge {
  font-size: 0.64rem; font-weight: 500;
  padding: 1px 6px;
  background: #f3f4f6;
  color: #9ca3af;
  border-radius: 20px;
  white-space: nowrap;
}
.ai-fallback-badge.active { background: #dcfce7; color: #16a34a; }

/* ── Responsive ───────────────────────── */
@media (max-width: 640px) {
  .landing-card { padding: 36px 28px; }
  .msg { padding: 4px 16px; }
  .input-area { padding: 4px 16px 16px; }
  .plus-menu-wrap { margin-left: 16px; }
  .mode-chips { padding: 0 16px 4px; }
  .activity-panel { margin: 0 16px 10px; width: calc(100% - 32px); }
  .settings-page { padding: 24px 20px 40px; }
}