/* ==========================================================================
   Nova AI — Design tokens
   ========================================================================== */
:root {
  /* Backgrounds */
  --bg-deep: #0F172A;
  --bg-panel: #111827;
  --bg-panel-2: #151f32;
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-strong: rgba(255, 255, 255, 0.07);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-strong: rgba(255, 255, 255, 0.14);

  /* Brand */
  --primary: #3B82F6;
  --secondary: #06B6D4;
  --accent: #8B5CF6;
  --success: #22C55E;

  /* Text */
  --text-hi: #FFFFFF;
  --text-lo: #CBD5E1;
  --text-muted: #7C8AA5;

  /* Gradients */
  --grad-brand: linear-gradient(135deg, var(--primary), var(--accent));
  --grad-hover: linear-gradient(135deg, #4c8bfb, #9d6ffb);
  --grad-text: linear-gradient(135deg, #7EB8FF, #C4A6FF);

  /* Shape / motion */
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 18px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 0.18s;
  --t: 0.3s;

  --sidebar-w: 268px;
  --sidebar-w-collapsed: 76px;
  --panel-w: 300px;
}

body.light {
  --bg-deep: #EEF1F8;
  --bg-panel: #FFFFFF;
  --bg-panel-2: #F5F7FC;
  --bg-glass: rgba(15, 23, 42, 0.03);
  --bg-glass-strong: rgba(15, 23, 42, 0.05);
  --border-glass: rgba(15, 23, 42, 0.08);
  --border-glass-strong: rgba(15, 23, 42, 0.14);
  --text-hi: #0F172A;
  --text-lo: #3B4A66;
  --text-muted: #7C8AA5;
}

/* ==========================================================================
   Reset & base
   ========================================================================== */
* { box-sizing: border-box; margin: 0; padding: 0; }

html { color-scheme: dark; }
body.light { color-scheme: light; }

body {
  font-family: "Poppins", "Segoe UI", sans-serif;
  background: var(--bg-deep);
  color: var(--text-lo);
  overflow: hidden;
  height: 100vh;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

button, input, textarea { font-family: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

::selection { background: var(--accent); color: white; }

/* Custom scrollbar */
* { scrollbar-width: thin; scrollbar-color: var(--border-glass-strong) transparent; }
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--border-glass-strong); border-radius: 10px; }
*::-webkit-scrollbar-thumb:hover { background: var(--primary); }

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

/* ==========================================================================
   Ambient background
   ========================================================================== */
.ambient { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  animation: float 18s ease-in-out infinite;
}
.blob-1 { width: 480px; height: 480px; background: var(--primary); top: -120px; left: -100px; }
.blob-2 { width: 420px; height: 420px; background: var(--accent); bottom: -140px; right: -80px; animation-delay: -6s; }
.blob-3 { width: 340px; height: 340px; background: var(--secondary); top: 45%; left: 55%; animation-delay: -12s; }

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.08); }
  66% { transform: translate(-30px, 25px) scale(0.95); }
}

#particles { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.5; }

/* ==========================================================================
   Loading screen
   ========================================================================== */
.loading-screen {
  position: fixed; inset: 0; z-index: 100;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 22px;
  background: var(--bg-deep);
  transition: opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}
.loading-screen.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.loading-logo { position: relative; width: 84px; height: 84px; display: flex; align-items: center; justify-content: center; }
.loading-logo i { font-size: 30px; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.loading-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--primary);
  border-right-color: var(--accent);
  animation: spin 1.4s linear infinite;
}
.loading-ring:nth-child(2) { inset: 12px; animation-duration: 1s; animation-direction: reverse; border-top-color: var(--secondary); border-right-color: transparent; border-left-color: var(--accent); }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { color: var(--text-muted); font-size: 14px; letter-spacing: 0.02em; }

/* ==========================================================================
   App shell
   ========================================================================== */
.app { position: relative; z-index: 1; display: flex; height: 100vh; }

/* ==========================================================================
   Sidebar
   ========================================================================== */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  display: flex; flex-direction: column;
  background: var(--bg-panel);
  border-right: 1px solid var(--border-glass);
  padding: 18px 14px;
  gap: 18px;
  transition: width var(--t) var(--ease), transform var(--t) var(--ease);
  overflow: hidden;
  position: relative;
  z-index: 20;
}

.sidebar.collapsed { width: var(--sidebar-w-collapsed); }
.sidebar.collapsed .label,
.sidebar.collapsed .sidebar-heading,
.sidebar.collapsed .brand-name { opacity: 0; width: 0; }
.sidebar.collapsed .sidebar-toggle i { transform: rotate(180deg); }
.sidebar.collapsed .new-chat-btn { justify-content: center; }

.sidebar-top { display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 10px; overflow: hidden; }
.brand-mark {
  width: 36px; height: 36px; border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-brand);
  color: white; font-size: 16px;
  box-shadow: 0 0 22px rgba(139, 92, 246, 0.55);
  flex-shrink: 0;
  animation: pulse-glow 3.5s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 16px rgba(139, 92, 246, 0.4); }
  50% { box-shadow: 0 0 28px rgba(59, 130, 246, 0.65); }
}
.brand-name { font-weight: 700; font-size: 16px; color: var(--text-hi); white-space: nowrap; transition: opacity var(--t-fast), width var(--t-fast); }
.brand-name em { font-style: normal; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }

.icon-btn {
  width: 36px; height: 36px; border-radius: var(--r-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-lo);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; position: relative;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--bg-glass-strong); color: var(--text-hi); border-color: var(--border-glass); }
.icon-btn:active { transform: scale(0.92); }
.icon-btn i { transition: transform var(--t) var(--ease); }

.new-chat-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border: none; border-radius: var(--r-md);
  background: var(--grad-brand);
  color: white; font-weight: 600; font-size: 14px;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(59, 130, 246, 0.35);
  transition: transform var(--t-fast), box-shadow var(--t-fast), filter var(--t-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.new-chat-btn:hover { filter: brightness(1.1); box-shadow: 0 6px 24px rgba(139, 92, 246, 0.45); transform: translateY(-1px); }
.new-chat-btn:active { transform: translateY(0) scale(0.98); }

.sidebar-section { display: flex; flex-direction: column; gap: 4px; }
.sidebar-heading { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); padding: 4px 10px; white-space: nowrap; transition: opacity var(--t-fast); }

.nav-list { display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--r-sm);
  font-size: 14px; color: var(--text-lo);
  white-space: nowrap; overflow: hidden;
  transition: background var(--t-fast), color var(--t-fast), padding-left var(--t-fast);
  position: relative;
}
.nav-item i { width: 18px; text-align: center; flex-shrink: 0; font-size: 15px; }
.nav-item .label { transition: opacity var(--t-fast); }
.nav-item:hover { background: var(--bg-glass-strong); color: var(--text-hi); padding-left: 16px; }
.nav-item.active {
  color: var(--text-hi);
  background: linear-gradient(90deg, rgba(59,130,246,0.18), rgba(139,92,246,0.08));
  box-shadow: inset 2px 0 0 var(--primary);
}
.history-item .label { overflow: hidden; text-overflow: ellipsis; }

.chat-history-list { flex: 1; overflow-y: auto; min-height: 0; }

.sidebar-bottom { border-top: 1px solid var(--border-glass); padding-top: 10px; }

/* Collapsed tooltip */
.sidebar.collapsed .nav-item { justify-content: center; }
.sidebar.collapsed [data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute; left: calc(100% + 12px); top: 50%; transform: translateY(-50%);
  background: var(--bg-panel-2); border: 1px solid var(--border-glass-strong);
  padding: 6px 10px; border-radius: 8px; font-size: 12px; color: var(--text-hi);
  white-space: nowrap; z-index: 50; box-shadow: 0 8px 20px rgba(0,0,0,0.35);
  animation: fade-in var(--t-fast) var(--ease);
}

@keyframes fade-in { from { opacity: 0; transform: translateY(-50%) translateX(-4px); } to { opacity: 1; transform: translateY(-50%) translateX(0); } }

/* ==========================================================================
   Main column
   ========================================================================== */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

/* ==========================================================================
   Topbar
   ========================================================================== */
.topbar {
  position: sticky; top: 0; z-index: 15;
  display: flex; align-items: center; gap: 14px;
  padding: 14px 24px;
  background: var(--bg-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-glass);
}

.mobile-menu-btn { display: none; }

.search-bar {
  flex: 1; max-width: 420px;
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px;
  border-radius: 999px;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.search-bar:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18); }
.search-bar i { color: var(--text-muted); font-size: 13px; }
.search-bar input { flex: 1; background: none; border: none; outline: none; font-size: 13.5px; color: var(--text-hi); }
.search-bar input::placeholder { color: var(--text-muted); }
.search-bar kbd { font-size: 11px; color: var(--text-muted); border: 1px solid var(--border-glass-strong); padding: 2px 6px; border-radius: 6px; font-family: "JetBrains Mono", monospace; }

.topbar-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }

.ai-status { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text-lo); padding: 0 10px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6); animation: ping 2s infinite; }
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.55); }
  70% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.badge {
  position: absolute; top: 2px; right: 2px;
  min-width: 15px; height: 15px; border-radius: 50%;
  background: var(--accent); color: white; font-size: 9.5px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--bg-panel);
}

/* Dropdowns */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute; top: calc(100% + 10px); right: 0;
  width: 300px;
  background: var(--bg-panel-2);
  border: 1px solid var(--border-glass-strong);
  border-radius: var(--r-md);
  box-shadow: 0 20px 45px rgba(0,0,0,0.4);
  padding: 10px;
  opacity: 0; visibility: hidden; transform: translateY(-8px) scale(0.98);
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), visibility var(--t-fast);
  z-index: 40;
}
.dropdown-menu.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.dropdown-title { font-size: 12px; color: var(--text-muted); padding: 6px 8px 10px; text-transform: uppercase; letter-spacing: 0.06em; }
.dropdown-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 9px 8px; border-radius: 10px; font-size: 12.5px;
  cursor: pointer; transition: background var(--t-fast);
}
.dropdown-item:hover { background: var(--bg-glass-strong); }
.dropdown-item strong { display: block; color: var(--text-hi); font-size: 13px; font-weight: 600; }
.dropdown-item span { display: block; color: var(--text-muted); font-size: 11px; margin-top: 2px; }
.dropdown-item.simple { align-items: center; color: var(--text-lo); }
.dropdown-item.simple i { width: 16px; text-align: center; }
.accent-success { color: var(--success); margin-top: 2px; }
.accent-secondary { color: var(--secondary); margin-top: 2px; }
.accent-primary { color: var(--primary); margin-top: 2px; }

.profile-summary { display: flex; align-items: center; gap: 10px; padding: 8px; border-bottom: 1px solid var(--border-glass); margin-bottom: 6px; }
.profile-summary strong { display: block; color: var(--text-hi); font-size: 13px; }
.profile-summary span { font-size: 11px; color: var(--text-muted); }

.profile-btn {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-glass-strong); border: 1px solid var(--border-glass);
  border-radius: 999px; padding: 4px 10px 4px 4px;
  cursor: pointer; transition: border-color var(--t-fast);
}
.profile-btn:hover { border-color: var(--border-glass-strong); }
.profile-btn i { font-size: 10px; color: var(--text-muted); }

.avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--grad-brand);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 11.5px; font-weight: 700;
  flex-shrink: 0;
}

/* ==========================================================================
   Workspace
   ========================================================================== */
.workspace { flex: 1; display: flex; min-height: 0; }

/* ==========================================================================
   Chat area
   ========================================================================== */
.chat-area { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.chat-scroll { flex: 1; overflow-y: auto; padding: 32px 24px 12px; }

.welcome { max-width: 720px; margin: 4vh auto 0; text-align: center; animation: rise-in 0.6s var(--ease); }
@keyframes rise-in { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.welcome-logo {
  width: 64px; height: 64px; margin: 0 auto 20px;
  border-radius: 20px;
  background: var(--grad-brand);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; color: white;
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.45);
  animation: pulse-glow 3.5s ease-in-out infinite;
}
.welcome h1 { font-size: 28px; font-weight: 700; color: var(--text-hi); margin-bottom: 8px; letter-spacing: -0.01em; }
.welcome > p { font-size: 14.5px; color: var(--text-muted); margin-bottom: 32px; }

.prompt-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; text-align: left; }
.prompt-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 16px; border-radius: var(--r-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
  cursor: pointer; color: var(--text-lo);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast), background var(--t-fast);
  text-align: left;
}
.prompt-card:hover { transform: translateY(-3px); border-color: var(--border-glass-strong); background: var(--bg-glass-strong); }
.prompt-card i { color: var(--primary); font-size: 16px; }
.prompt-title { font-size: 13.5px; font-weight: 600; color: var(--text-hi); }
.prompt-sub { font-size: 12px; color: var(--text-muted); }

/* Messages */
.messages { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 22px; padding-bottom: 8px; }

.msg-row { display: flex; gap: 12px; animation: msg-in 0.35s var(--ease); }
@keyframes msg-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.msg-row.user { flex-direction: row-reverse; }

.msg-avatar {
  width: 32px; height: 32px; border-radius: 9px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 13px;
  margin-top: 2px;
}
.msg-row.ai .msg-avatar { background: var(--grad-brand); color: white; }
.msg-row.user .msg-avatar { background: var(--bg-glass-strong); color: var(--text-hi); border: 1px solid var(--border-glass); }

.msg-body { max-width: 78%; display: flex; flex-direction: column; gap: 6px; }
.msg-row.user .msg-body { align-items: flex-end; }

.msg-bubble {
  padding: 12px 16px; border-radius: var(--r-md);
  font-size: 14.5px; line-height: 1.6;
  border: 1px solid var(--border-glass);
}
.msg-row.ai .msg-bubble { background: var(--bg-glass); color: var(--text-lo); border-bottom-left-radius: 4px; }
.msg-row.user .msg-bubble { background: var(--grad-brand); color: white; border: none; border-bottom-right-radius: 4px; }

.msg-meta { display: flex; align-items: center; gap: 10px; font-size: 11px; color: var(--text-muted); padding: 0 4px; }
.msg-actions { display: flex; gap: 4px; opacity: 0; transition: opacity var(--t-fast); }
.msg-row:hover .msg-actions { opacity: 1; }
.msg-actions button {
  width: 24px; height: 24px; border-radius: 7px; border: none; background: transparent;
  color: var(--text-muted); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 11px;
  transition: background var(--t-fast), color var(--t-fast);
}
.msg-actions button:hover { background: var(--bg-glass-strong); color: var(--text-hi); }
.msg-actions button.liked { color: var(--success); }
.msg-actions button.disliked { color: #f87171; }

.typing-bubble { display: flex; gap: 4px; padding: 14px 16px; }
.typing-bubble span { width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted); animation: bounce 1.2s infinite ease-in-out; }
.typing-bubble span:nth-child(2) { animation-delay: 0.15s; }
.typing-bubble span:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce { 0%, 60%, 100% { transform: translateY(0); opacity: 0.5; } 30% { transform: translateY(-5px); opacity: 1; } }

/* ==========================================================================
   Input section
   ========================================================================== */
.input-section { padding: 10px 24px 20px; }

.input-shell {
  max-width: 760px; margin: 0 auto;
  display: flex; align-items: flex-end; gap: 8px;
  padding: 10px 10px 10px 14px;
  border-radius: var(--r-lg);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass-strong);
  backdrop-filter: blur(14px);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.input-shell:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.14); }

#userInput {
  flex: 1; background: none; border: none; outline: none; resize: none;
  font-size: 14.5px; color: var(--text-hi); line-height: 1.5;
  max-height: 260px; padding: 8px 4px;
}
#userInput::placeholder { color: var(--text-muted); }

.input-actions { display: flex; align-items: center; gap: 4px; }
.char-counter { font-size: 10.5px; color: var(--text-muted); font-family: "JetBrains Mono", monospace; margin-right: 4px; white-space: nowrap; }

.send-btn, .stop-btn {
  width: 36px; height: 36px; border-radius: var(--r-sm); border: none;
  background: var(--grad-brand); color: white; cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
  transition: transform var(--t-fast), filter var(--t-fast), opacity var(--t-fast);
  flex-shrink: 0;
}
.send-btn:hover { filter: brightness(1.12); transform: translateY(-1px); }
.send-btn:active { transform: scale(0.92); }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; filter: none; transform: none; }
.stop-btn { background: #ef4444; }

.input-hint { text-align: center; font-size: 11px; color: var(--text-muted); margin-top: 10px; }

/* ==========================================================================
   Right info panel
   ========================================================================== */
.info-panel {
  width: var(--panel-w); flex-shrink: 0;
  border-left: 1px solid var(--border-glass);
  background: var(--bg-panel);
  padding: 18px; display: flex; flex-direction: column; gap: 14px;
  overflow-y: auto;
  transition: width var(--t) var(--ease), padding var(--t) var(--ease), opacity var(--t) var(--ease);
}
.info-panel.collapsed { width: 0; padding: 18px 0; opacity: 0; border-left-color: transparent; }

.info-panel-header { display: flex; align-items: center; justify-content: space-between; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); }

.info-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--r-md);
  padding: 14px;
}
.info-card-title { font-size: 12.5px; font-weight: 600; color: var(--text-hi); margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.info-card-sub { font-size: 11px; color: var(--text-muted); margin-top: 6px; display: block; }
.info-card-text { font-size: 12px; color: var(--text-lo); line-height: 1.6; }

.model-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
  background: linear-gradient(90deg, rgba(59,130,246,0.18), rgba(139,92,246,0.18));
  color: var(--text-hi); border: 1px solid var(--border-glass-strong);
}
.model-pill i { color: var(--secondary); }

.progress-track { height: 6px; border-radius: 4px; background: var(--bg-glass-strong); overflow: hidden; }
.progress-fill { height: 100%; border-radius: 4px; background: var(--grad-brand); position: relative; overflow: hidden; transition: width var(--t) var(--ease); }
.progress-fill::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  animation: shimmer 2.2s infinite;
}
@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

.stat-row { display: flex; align-items: center; justify-content: space-between; font-size: 12.5px; padding: 6px 0; border-bottom: 1px dashed var(--border-glass); }
.stat-row:last-child { border-bottom: none; padding-bottom: 0; }
.stat-row strong { color: var(--text-hi); }

.file-row { display: flex; align-items: center; gap: 10px; font-size: 12.5px; padding: 7px 0; color: var(--text-lo); }
.file-row i { color: var(--secondary); width: 16px; text-align: center; }

.tip-card { background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(139,92,246,0.1)); }
.tip-card kbd { background: var(--bg-glass-strong); border: 1px solid var(--border-glass-strong); border-radius: 5px; padding: 1px 5px; font-size: 10.5px; font-family: "JetBrains Mono", monospace; }

/* ==========================================================================
   Toasts
   ========================================================================== */
.toast-stack { position: fixed; bottom: 24px; right: 24px; z-index: 90; display: flex; flex-direction: column; gap: 10px; }
.toast {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-radius: var(--r-md);
  background: var(--bg-panel-2); border: 1px solid var(--border-glass-strong);
  box-shadow: 0 12px 30px rgba(0,0,0,0.35);
  font-size: 13px; color: var(--text-hi);
  animation: toast-in 0.3s var(--ease);
  min-width: 240px;
}
.toast.hide { animation: toast-out 0.3s var(--ease) forwards; }
.toast i { color: var(--success); }
.toast.error i { color: #f87171; }
@keyframes toast-in { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { to { opacity: 0; transform: translateX(40px); } }

/* ==========================================================================
   Modal
   ========================================================================== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 95;
  background: rgba(4, 8, 20, 0.6); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: opacity var(--t) var(--ease), visibility var(--t);
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal {
  width: min(420px, 90vw);
  background: var(--bg-panel-2);
  border: 1px solid var(--border-glass-strong);
  border-radius: var(--r-lg);
  padding: 28px;
  position: relative;
  transform: scale(0.94) translateY(10px);
  transition: transform var(--t) var(--ease);
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal h3 { color: var(--text-hi); margin-bottom: 10px; font-size: 17px; }
.modal p { font-size: 13.5px; color: var(--text-lo); line-height: 1.6; }
.modal-close { position: absolute; top: 14px; right: 14px; }

/* ==========================================================================
   Image Generator page
   ========================================================================== */
.imagegen-area { flex: 1; overflow-y: auto; padding: 32px 24px 48px; }

.imagegen-header { display: flex; align-items: center; gap: 16px; max-width: 900px; margin: 0 auto 26px; }
.imagegen-header-icon {
  width: 52px; height: 52px; border-radius: var(--r-md); flex-shrink: 0;
  background: var(--grad-brand); color: white;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.4);
}
.imagegen-header h1 { font-size: 22px; font-weight: 700; color: var(--text-hi); margin-bottom: 2px; }
.imagegen-header p { font-size: 13px; color: var(--text-muted); }

.imagegen-controls {
  max-width: 900px; margin: 0 auto 32px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--r-lg);
  padding: 18px;
  backdrop-filter: blur(14px);
}
.imagegen-controls textarea {
  width: 100%; background: none; border: none; outline: none; resize: none;
  font-size: 14.5px; color: var(--text-hi); font-family: inherit; line-height: 1.5;
  padding-bottom: 14px; border-bottom: 1px solid var(--border-glass);
}
.imagegen-controls textarea::placeholder { color: var(--text-muted); }

.imagegen-options { display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-top: 14px; }
.option-group { display: flex; flex-direction: column; gap: 6px; }
.option-group label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }

.option-group select {
  background: var(--bg-glass-strong); border: 1px solid var(--border-glass-strong);
  color: var(--text-hi); border-radius: var(--r-sm); padding: 8px 12px; font-size: 13px;
  outline: none; cursor: pointer; min-width: 190px;
}

.ratio-picker { display: flex; gap: 6px; }
.ratio-btn {
  padding: 8px 12px; border-radius: var(--r-sm); border: 1px solid var(--border-glass-strong);
  background: var(--bg-glass-strong); color: var(--text-lo); font-size: 12.5px; cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.ratio-btn:hover { color: var(--text-hi); }
.ratio-btn.active { background: var(--grad-brand); color: white; border-color: transparent; }

.generate-btn {
  margin-left: auto;
  display: flex; align-items: center; gap: 10px;
  padding: 11px 22px; border: none; border-radius: var(--r-md);
  background: var(--grad-brand); color: white; font-weight: 600; font-size: 14px;
  cursor: pointer; box-shadow: 0 4px 18px rgba(59, 130, 246, 0.35);
  transition: transform var(--t-fast), filter var(--t-fast);
}
.generate-btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
.generate-btn:active { transform: translateY(0) scale(0.98); }

.imagegen-results {
  max-width: 1100px; margin: 0 auto;
  --ig-navy: #0B1220;
  --ig-purple: #7C5CFF;
  --ig-blue: #4F8CFF;
  --ig-cyan: #00D4FF;
}

/* Empty state — animated gradient + dashed glowing border */
.imagegen-empty {
  position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  padding: 70px 24px;
  border-radius: 24px;
  border: 1.5px dashed rgba(124, 92, 255, 0.35);
  background:
    radial-gradient(ellipse at 30% 20%, rgba(124, 92, 255, 0.12), transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(0, 212, 255, 0.09), transparent 60%),
    var(--ig-navy);
  overflow: hidden;
  text-align: center;
  transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}
.imagegen-empty::before {
  content: "";
  position: absolute; inset: -40%;
  background: radial-gradient(circle at 50% 50%, rgba(124, 92, 255, 0.18), transparent 55%);
  animation: ig-float 10s ease-in-out infinite;
  pointer-events: none;
}
.imagegen-empty:hover {
  border-color: rgba(124, 92, 255, 0.6);
  box-shadow: 0 0 40px rgba(124, 92, 255, 0.18);
  transform: translateY(-2px);
}
.imagegen-empty i, .imagegen-empty p { position: relative; z-index: 1; }
.imagegen-empty i {
  font-size: 38px;
  background: linear-gradient(135deg, var(--ig-purple), var(--ig-cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  opacity: 0.9;
}
.imagegen-empty p { font-size: 14px; color: rgba(255, 255, 255, 0.55); }

@keyframes ig-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(3%, -4%) scale(1.08); }
}
@keyframes ig-fade-in {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes ig-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.image-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 22px;
}

.image-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  animation: ig-fade-in 0.5s ease both;
}
.image-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 92, 255, 0.4);
  box-shadow: 0 16px 48px rgba(124, 92, 255, 0.25), 0 0 0 1px rgba(124, 92, 255, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.image-card-frame {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--ig-navy);
  overflow: hidden;
  border-radius: 20px 20px 0 0;
}
.image-card-frame::before {
  content: "";
  position: absolute; inset: -50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(124, 92, 255, 0.25), transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(0, 212, 255, 0.18), transparent 50%);
  animation: ig-float 12s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}
.image-card-frame img {
  position: relative; z-index: 1;
  width: 100%; height: 100%; object-fit: cover; display: block;
  opacity: 0;
  transition: opacity 0.5s ease, transform 0.35s ease;
}
.image-card:not(.loading):not(.error) .image-card-frame img {
  opacity: 1;
  animation: ig-fade-in 0.6s ease;
}
.image-card:hover .image-card-frame img { transform: scale(1.02); }
.image-card.loading .image-card-frame img { opacity: 0; }

.image-skeleton {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; color: rgba(255, 255, 255, 0.6); font-size: 22px;
  opacity: 0; transition: opacity 0.3s ease;
  background: linear-gradient(110deg, rgba(255, 255, 255, 0.02) 8%, rgba(255, 255, 255, 0.09) 18%, rgba(255, 255, 255, 0.02) 33%);
  background-size: 200% 100%;
}
.image-card.loading .image-skeleton {
  opacity: 1;
  animation: ig-shimmer 1.6s linear infinite;
}
.image-card.error .image-skeleton { opacity: 1; animation: none; background: none; color: #ff8a8a; }
.image-skeleton span { font-size: 12px; color: rgba(255, 255, 255, 0.45); }

.image-card-footer {
  position: relative; z-index: 1;
  padding: 14px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.image-card-prompt { font-size: 12.5px; color: rgba(255, 255, 255, 0.6); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.image-card-actions { display: flex; gap: 6px; flex-shrink: 0; }
.image-card-actions .icon-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.image-card-actions .icon-btn:hover {
  background: linear-gradient(135deg, var(--ig-purple), var(--ig-blue));
  border-color: transparent;
  color: white;
  transform: translateY(-1px);
}

@media (max-width: 640px) {
  .image-grid { grid-template-columns: 1fr; }
  .imagegen-empty { padding: 48px 18px; }
}

/* ==========================================================================
   Project Builder page — full multi-file project workspace
   ========================================================================== */
.codegen-area {
  flex: 1; overflow-y: auto;
  padding: 40px 32px 56px;
  --cg-bg: #0B1020;
  --cg-card: rgba(255, 255, 255, 0.05);
  --cg-accent: #7C5CFF;
  --cg-blue: #4F8CFF;
  --cg-cyan: #00D4FF;
  font-family: "Inter", "Poppins", sans-serif;
}

.codegen-header {
  display: flex; align-items: center; gap: 18px;
  max-width: 1040px; margin: 0 auto 32px;
}
.codegen-header-icon {
  width: 56px; height: 56px; border-radius: 16px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--cg-accent), var(--cg-blue));
  color: white;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  box-shadow: 0 0 32px rgba(124, 92, 255, 0.45);
}
.codegen-header-text { flex: 1; min-width: 0; }
.codegen-header h1 { font-size: 26px; font-weight: 800; color: var(--text-hi); margin-bottom: 4px; letter-spacing: -0.01em; }
.codegen-header p { font-size: 14.5px; color: var(--text-muted); }

.how-it-works-btn {
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
  padding: 10px 16px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-lo); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.how-it-works-btn:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(124, 92, 255, 0.4); transform: translateY(-1px); }
.how-it-works-btn i { color: var(--cg-accent); }

/* ── Input card ─────────────────────────────────────────────────────── */
.codegen-input-card {
  max-width: 1040px; margin: 0 auto 40px;
  position: relative;
  background: var(--cg-card);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 28px 28px 24px;
  border: 1px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
  transition: box-shadow 0.35s ease, transform 0.35s ease;
}
.codegen-input-card::before {
  content: ""; position: absolute; inset: 0; border-radius: 24px; padding: 1px;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.6), rgba(0, 212, 255, 0.25), transparent 70%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.codegen-input-card:hover {
  box-shadow: 0 12px 56px rgba(124, 92, 255, 0.18);
  transform: translateY(-2px);
}

.codegen-input-label {
  display: block; font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 10px;
}

.codegen-input-card textarea {
  width: 100%; min-height: 88px; resize: vertical;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.25);
  padding: 16px 18px;
  font-size: 15px; color: var(--text-hi); font-family: inherit; line-height: 1.6;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.codegen-input-card textarea:focus {
  border-color: var(--cg-accent);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.25), 0 0 0 3px rgba(124, 92, 255, 0.18);
}
.codegen-input-card textarea::placeholder { color: var(--text-muted); }

.codegen-examples { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.example-chip {
  padding: 7px 14px; border-radius: 999px; font-size: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-lo); cursor: pointer;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}
.example-chip:hover { background: rgba(124, 92, 255, 0.12); border-color: rgba(124, 92, 255, 0.4); color: var(--text-hi); }

.codegen-input-footer {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: 16px; margin-top: 22px; padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.codegen-input-left { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.codegen-input-right { display: flex; align-items: center; gap: 12px; }

.codegen-input-left .option-group select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px; padding: 9px 14px; font-size: 13.5px; color: var(--text-hi);
  cursor: pointer; outline: none; min-width: 150px;
  transition: border-color 0.25s ease;
}
.codegen-input-left .option-group select:hover { border-color: rgba(124, 92, 255, 0.4); }

.comments-toggle input { accent-color: var(--cg-accent); }

.char-counter { font-size: 11.5px; color: var(--text-muted); font-family: "JetBrains Mono", monospace; white-space: nowrap; }

.clear-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-lo); font-size: 13.5px; font-weight: 500; cursor: pointer;
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.clear-btn:hover { background: rgba(255, 99, 99, 0.1); border-color: rgba(255, 99, 99, 0.4); color: #ff9d9d; transform: translateY(-1px); }

.codegen-input-right .generate-btn {
  position: relative; overflow: hidden;
  display: flex; align-items: center; gap: 10px;
  padding: 12px 26px; border: none; border-radius: 12px;
  background: linear-gradient(135deg, var(--cg-accent), var(--cg-blue));
  color: white; font-weight: 600; font-size: 14.5px; cursor: pointer;
  box-shadow: 0 6px 24px rgba(124, 92, 255, 0.4);
  transition: transform 0.28s ease, box-shadow 0.28s ease, filter 0.28s ease;
}
.codegen-input-right .generate-btn:hover { filter: brightness(1.1); transform: translateY(-2px); box-shadow: 0 10px 32px rgba(124, 92, 255, 0.5); }
.codegen-input-right .generate-btn:active { transform: translateY(0) scale(0.98); }
.codegen-input-right .generate-btn::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(circle, rgba(255,255,255,0.35) 0%, transparent 60%);
  opacity: 0; transform: scale(0.4); transition: opacity 0.5s ease, transform 0.5s ease;
}
.codegen-input-right .generate-btn:active::after { opacity: 1; transform: scale(1.4); transition: 0s; }

.codegen-input-right .stop-btn { width: 46px; height: 46px; border-radius: 12px; background: #ef4444; }

/* ── Generated project workspace ──────────────────────────────────────── */
.codegen-output-wrap { max-width: 1040px; margin: 0 auto 40px; }

.codegen-empty {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 76px 24px; text-align: center;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    radial-gradient(ellipse at 30% 20%, rgba(124, 92, 255, 0.08), transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(0, 212, 255, 0.06), transparent 60%),
    var(--cg-bg);
  animation: fade-in 0.5s ease;
}
.codegen-empty i {
  font-size: 40px; margin-bottom: 4px;
  background: linear-gradient(135deg, var(--cg-accent), var(--cg-cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  opacity: 0.9;
}
.codegen-empty p { font-size: 15px; color: var(--text-hi); font-weight: 600; }
.codegen-empty span { font-size: 13px; color: var(--text-muted); }

/* Project workspace shell */
.pb-workspace {
  border-radius: 24px; overflow: hidden;
  background: var(--cg-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
  animation: fade-in 0.4s ease;
  position: relative;
}
.pb-workspace.pb-fullscreen {
  position: fixed; inset: 24px; z-index: 200; max-width: none;
}
.pb-workspace.pb-loading::after {
  content: ""; position: absolute; inset: 0; z-index: 5;
  background: linear-gradient(90deg, transparent, rgba(124, 92, 255, 0.08), transparent);
  animation: shimmer 1.4s infinite;
  pointer-events: none;
}

.pb-toolbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: sticky; top: 0; z-index: 3;
}
.pb-project-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.pb-project-name { font-size: 14.5px; font-weight: 700; color: var(--text-hi); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pb-project-desc { font-size: 12px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pb-toolbar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; flex-wrap: wrap; }

.pb-view-toggle {
  display: flex; padding: 3px; border-radius: 10px;
  background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.09);
}
.pb-view-btn {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 13px; border-radius: 8px; border: none; background: transparent;
  color: var(--text-muted); font-size: 12.5px; font-weight: 600; cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
}
.pb-view-btn.active { background: linear-gradient(135deg, var(--cg-accent), var(--cg-blue)); color: white; }
.pb-view-btn:not(.active):hover { color: var(--text-hi); }

.pb-body { display: flex; max-height: 560px; min-height: 320px; }
.pb-workspace.pb-fullscreen .pb-body { max-height: calc(100vh - 130px); }

.pb-file-tabs {
  flex-shrink: 0; width: 190px; overflow-y: auto;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.015);
  padding: 8px;
  display: flex; flex-direction: column; gap: 4px;
}
.pb-file-tab {
  display: block; width: 100%; text-align: left;
  padding: 9px 12px; border-radius: 9px; border: none;
  background: transparent; color: var(--text-muted);
  font-size: 12.5px; font-family: "JetBrains Mono", monospace;
  cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}
.pb-file-tab:hover { background: rgba(255, 255, 255, 0.05); color: var(--text-hi); }
.pb-file-tab.active { background: rgba(124, 92, 255, 0.18); color: var(--text-hi); box-shadow: inset 2px 0 0 var(--cg-accent); }

.pb-file-view { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.pb-file-header {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.pb-file-name { font-size: 12.5px; font-weight: 600; color: var(--text-hi); font-family: "JetBrains Mono", monospace; }
.pb-file-actions { display: flex; gap: 6px; margin-left: auto; }

.pb-preview-pane { flex: 1; position: relative; background: white; }
#pbPreviewFrame { width: 100%; height: 100%; min-height: 320px; border: none; display: block; }
.pb-preview-unavailable {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  background: var(--cg-bg); color: var(--text-muted); text-align: center; padding: 24px;
}
.pb-preview-unavailable i { font-size: 28px; color: var(--text-muted); }
.pb-preview-unavailable p { color: var(--text-hi); font-size: 14px; font-weight: 600; }
.pb-preview-unavailable span { font-size: 12.5px; }

.pb-explain-modal { width: min(560px, 92vw); }
.pb-explain-modal h3 { display: flex; align-items: center; gap: 10px; }
.pb-explain-body {
  margin-top: 6px; max-height: 55vh; overflow-y: auto;
  font-size: 13.5px; line-height: 1.7; color: var(--text-lo);
  white-space: pre-wrap;
}

.code-block {
  border-radius: 24px; overflow: hidden;
  background: var(--cg-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
  animation: fade-in 0.4s ease;
  position: relative;
  transition: all 0.35s ease;
}
.code-block.fullscreen {
  position: fixed; inset: 24px; z-index: 200; max-width: none;
}
.code-block.loading::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(90deg, transparent, rgba(124, 92, 255, 0.08), transparent);
  animation: shimmer 1.4s infinite;
  pointer-events: none;
}

.code-block-header {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: sticky; top: 0; z-index: 2;
}
.code-block-title { font-size: 13.5px; font-weight: 700; color: var(--text-hi); }
.code-lang-badge {
  font-size: 11px; font-weight: 600; padding: 4px 12px; border-radius: 999px;
  background: linear-gradient(90deg, rgba(124, 92, 255, 0.25), rgba(0, 212, 255, 0.2));
  color: white; font-family: "JetBrains Mono", monospace;
}
.code-block-actions { display: flex; gap: 6px; margin-left: auto; }

.code-toolbar-btn {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 13px; border-radius: 9px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-lo); font-size: 12px; font-weight: 500; cursor: pointer;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.code-toolbar-btn.icon-only { padding: 7px 10px; }
.code-toolbar-btn:hover { background: rgba(124, 92, 255, 0.15); border-color: rgba(124, 92, 255, 0.4); color: var(--text-hi); transform: translateY(-1px); }

.code-editor { display: flex; max-height: 560px; overflow: auto; flex: 1; }
.code-block.fullscreen .code-editor { max-height: calc(100vh - 130px); }

.code-linenumbers {
  flex-shrink: 0; user-select: none; text-align: right;
  padding: 16px 12px 16px 16px;
  font-family: "JetBrains Mono", monospace; font-size: 13px; line-height: 1.7;
  color: rgba(255, 255, 255, 0.25);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.015);
}
.code-linenumbers span { display: block; }

.code-block pre, .pb-file-view pre { margin: 0; padding: 16px 20px; overflow-x: auto; flex: 1; }
.code-block code, .pb-file-view code {
  font-family: "JetBrains Mono", monospace;
  font-size: 13.5px; line-height: 1.7; color: #d7e2ff;
  white-space: pre;
}

/* ── Quick action cards ─────────────────────────────────────────────── */
.quick-actions-grid {
  max-width: 1040px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.quick-action-card {
  position: relative;
  display: flex; align-items: center; gap: 14px;
  padding: 18px; border-radius: 18px; text-align: left;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  cursor: pointer; overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.quick-action-card::before {
  content: ""; position: absolute; inset: 0; border-radius: 18px; padding: 1px;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.5), transparent 60%);
  opacity: 0; transition: opacity 0.3s ease;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.quick-action-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 92, 255, 0.3);
  box-shadow: 0 12px 32px rgba(124, 92, 255, 0.2);
}
.quick-action-card:hover::before { opacity: 1; }

.qa-icon {
  width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 16px; color: white;
}
.qa-icon-blue { background: linear-gradient(135deg, #4F8CFF, #2C5FE0); }
.qa-icon-purple { background: linear-gradient(135deg, #7C5CFF, #A66CFF); }
.qa-icon-green { background: linear-gradient(135deg, #22C55E, #0FA968); }
.qa-icon-orange { background: linear-gradient(135deg, #FB923C, #EA6C1D); }

.qa-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; flex: 1; }
.qa-text strong { font-size: 13.5px; color: var(--text-hi); font-weight: 700; }
.qa-text span { font-size: 11.5px; color: var(--text-muted); }

.qa-arrow { font-size: 12px; color: var(--text-muted); flex-shrink: 0; transition: transform 0.3s ease, color 0.3s ease; }
.quick-action-card:hover .qa-arrow { transform: translateX(4px); color: var(--cg-accent); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

@media (max-width: 900px) {
  .quick-actions-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .codegen-area { padding: 24px 16px 40px; }
  .codegen-header { flex-wrap: wrap; }
  .how-it-works-btn { order: 3; width: 100%; justify-content: center; }
  .codegen-input-card { padding: 20px 18px; }
  .codegen-input-footer { flex-direction: column; align-items: stretch; }
  .codegen-input-right { justify-content: stretch; }
  .codegen-input-right .generate-btn { flex: 1; justify-content: center; }
  .quick-actions-grid { grid-template-columns: 1fr; }
  .code-block.fullscreen { inset: 12px; }
  .pb-body { flex-direction: column; max-height: none; }
  .pb-file-tabs { width: 100%; flex-direction: row; overflow-x: auto; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .pb-file-tab { white-space: nowrap; flex-shrink: 0; }
  .pb-toolbar { flex-direction: column; align-items: stretch; }
  .pb-toolbar-actions { margin-left: 0; justify-content: space-between; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1180px) {
  .info-panel { display: none; }
}

@media (max-width: 860px) {
  .sidebar {
    position: fixed; top: 0; left: 0; height: 100vh;
    transform: translateX(-100%);
    box-shadow: 20px 0 50px rgba(0,0,0,0.4);
  }
  .sidebar.mobile-open { transform: translateX(0); }
  .sidebar.collapsed { width: var(--sidebar-w); }
  .sidebar.collapsed .label, .sidebar.collapsed .sidebar-heading, .sidebar.collapsed .brand-name { opacity: 1; width: auto; }
  .mobile-menu-btn { display: flex; }
  .sidebar-toggle { display: none; }
  .prompt-cards { grid-template-columns: 1fr; }
  .search-bar kbd { display: none; }
  .topbar { padding: 12px 16px; }
  .chat-scroll { padding: 20px 14px 12px; }
  .input-section { padding: 8px 14px 16px; }
  .msg-body { max-width: 88%; }
  .imagegen-area { padding: 20px 14px 32px; }
  .generate-btn { margin-left: 0; width: 100%; justify-content: center; }
  .option-group select { min-width: 0; width: 100%; }
}

@media (max-width: 860px) {
  .sidebar-backdrop {
    position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 19;
    opacity: 0; visibility: hidden; transition: opacity var(--t), visibility var(--t);
  }
  .sidebar-backdrop.show { opacity: 1; visibility: visible; }
}

/* ==========================================================================
   Markdown rendering inside chat bubbles (fixes raw **/### symbols)
   ========================================================================== */
.msg-bubble h1, .msg-bubble h2, .msg-bubble h3, .msg-bubble h4 {
  color: var(--text-hi); font-weight: 700; line-height: 1.3;
  margin: 14px 0 8px;
}
.msg-bubble h1:first-child, .msg-bubble h2:first-child,
.msg-bubble h3:first-child, .msg-bubble h4:first-child { margin-top: 0; }
.msg-bubble h1 { font-size: 19px; }
.msg-bubble h2 { font-size: 16.5px; }
.msg-bubble h3 { font-size: 14.5px; }
.msg-bubble h4 { font-size: 13.5px; }

.msg-bubble p { margin: 0 0 12px; }
.msg-bubble p:last-child { margin-bottom: 0; }

.msg-bubble ul, .msg-bubble ol { margin: 4px 0 12px 22px; display: flex; flex-direction: column; gap: 4px; }
.msg-bubble li { line-height: 1.55; }
.msg-bubble li > ul, .msg-bubble li > ol { margin-top: 4px; margin-bottom: 0; }

.msg-bubble strong { color: var(--text-hi); font-weight: 700; }
.msg-bubble em { color: var(--text-hi); }

.msg-bubble a { color: var(--secondary); text-decoration: underline; text-underline-offset: 2px; }

.msg-bubble code {
  background: rgba(255,255,255,0.09);
  border-radius: 5px; padding: 1px 6px;
  font-family: "JetBrains Mono", monospace; font-size: 0.88em;
}
.msg-bubble pre {
  background: #0a0f1c; border: 1px solid var(--border-glass);
  border-radius: 10px; padding: 14px; overflow-x: auto; margin: 8px 0 12px;
}
.msg-bubble pre code { background: none; padding: 0; font-size: 12.5px; line-height: 1.6; }

.msg-bubble blockquote {
  border-left: 3px solid var(--border-glass-strong);
  padding: 2px 14px; margin: 8px 0 12px; color: var(--text-muted);
}

.msg-bubble table { border-collapse: collapse; width: 100%; margin: 8px 0 12px; font-size: 13px; }
.msg-bubble th, .msg-bubble td { border: 1px solid var(--border-glass-strong); padding: 6px 10px; text-align: left; }
.msg-bubble th { background: var(--bg-glass-strong); color: var(--text-hi); font-weight: 600; }

.msg-bubble hr { border: none; border-top: 1px solid var(--border-glass); margin: 14px 0; }

/* Streaming cursor shown at the end of partial AI output */
.stream-cursor {
  display: inline-block; width: 2px; height: 1em; margin-left: 2px;
  background: var(--primary); vertical-align: text-bottom;
  animation: stream-blink 0.9s steps(1) infinite;
}
@keyframes stream-blink { 50% { opacity: 0; } }

.typing-bubble-wrap { padding: 8px 6px; }
/* ==========================================================================
   Auth pages (login / register / forgot password)
   ========================================================================== */
.auth-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.auth-card {
  position: relative; z-index: 1;
  width: 100%; max-width: 380px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--r-lg);
  padding: 36px 32px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

.auth-brand {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-bottom: 26px;
}
.auth-brand .brand-mark {
  width: 38px; height: 38px; border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-brand); color: white; font-size: 16px;
  box-shadow: 0 0 22px rgba(139, 92, 246, 0.5);
}
.auth-brand span {
  font-weight: 700; font-size: 17px; color: var(--text-hi);
}
.auth-brand span em { font-style: normal; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }

.auth-card h1 {
  font-size: 21px; font-weight: 700; color: var(--text-hi);
  text-align: center; margin-bottom: 6px;
}
.auth-subtitle {
  text-align: center; font-size: 13px; color: var(--text-muted);
  margin-bottom: 24px;
}

.auth-card form { display: flex; flex-direction: column; gap: 12px; }

.auth-card input[type="text"],
.auth-card input[type="email"],
.auth-card input[type="password"] {
  width: 100%;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass-strong);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  font-size: 14px; font-family: inherit;
  color: var(--text-hi);
  outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.auth-card input::placeholder { color: var(--text-muted); }
.auth-card input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.auth-card button[type="submit"] {
  margin-top: 6px;
  padding: 12px; border: none; border-radius: var(--r-sm);
  background: var(--grad-brand); color: white; font-weight: 600; font-size: 14px;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(59, 130, 246, 0.35);
  transition: transform var(--t-fast), filter var(--t-fast);
}
.auth-card button[type="submit"]:hover { filter: brightness(1.1); transform: translateY(-1px); }
.auth-card button[type="submit"]:active { transform: translateY(0) scale(0.98); }

.auth-links {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  margin-top: 18px; font-size: 13px;
}
.auth-links a { color: var(--secondary); transition: color var(--t-fast); }
.auth-links a:hover { color: var(--primary); }

.auth-message {
  margin-top: 14px; text-align: center; font-size: 13px;
  min-height: 18px;
}
.auth-message.error { color: #f87171; }
.auth-message.success { color: var(--success); }

/* ==========================================================================
   Emoji picker
   ========================================================================== */
.emoji-wrap { position: relative; }

.emoji-picker {
  position: absolute; bottom: calc(100% + 10px); right: 0;
  width: 260px; max-height: 220px; overflow-y: auto;
  background: var(--bg-panel-2);
  border: 1px solid var(--border-glass-strong);
  border-radius: var(--r-md);
  padding: 10px;
  box-shadow: 0 20px 45px rgba(0,0,0,0.4);
  opacity: 0; visibility: hidden; transform: translateY(8px) scale(0.98);
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), visibility var(--t-fast);
  z-index: 40;
}
.emoji-picker.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }

.emoji-grid {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px;
}
.emoji-grid button {
  background: none; border: none; cursor: pointer;
  font-size: 18px; padding: 6px; border-radius: 8px;
  transition: background var(--t-fast);
}
.emoji-grid button:hover { background: var(--bg-glass-strong); }

/* ==========================================================================
   File attachments (chat input + sent messages)
   ========================================================================== */
.attached-files-bar {
  max-width: 760px; margin: 0 auto 10px;
  display: flex; flex-wrap: wrap; gap: 8px;
}

.file-chip {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px 7px 12px; border-radius: 999px;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass-strong);
  font-size: 12.5px; color: var(--text-hi);
  animation: msg-in 0.25s var(--ease);
}
.file-chip i { color: var(--secondary); font-size: 12px; }
.file-chip-name { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-chip-trunc {
  font-size: 10px; color: var(--text-muted);
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  padding: 1px 6px; border-radius: 999px;
}
.file-chip-remove {
  width: 18px; height: 18px; border-radius: 50%; border: none;
  background: var(--bg-glass); color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 10px; flex-shrink: 0;
  transition: background var(--t-fast), color var(--t-fast);
}
.file-chip-remove:hover { background: #f87171; color: white; }

.msg-file-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.msg-file-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; font-size: 11.5px;
  background: rgba(255,255,255,0.15); color: white;
}
.msg-file-tag i { font-size: 10px; }

/* ==========================================================================
   File Analyzer page
   ========================================================================== */
.fileanalyzer-area { flex: 1; overflow-y: auto; padding: 32px 24px 48px; }

.fileanalyzer-header { display: flex; align-items: center; gap: 16px; max-width: 900px; margin: 0 auto 26px; }
.fileanalyzer-header-icon {
  width: 52px; height: 52px; border-radius: var(--r-md); flex-shrink: 0;
  background: var(--grad-brand); color: white;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.4);
}
.fileanalyzer-header h1 { font-size: 22px; font-weight: 700; color: var(--text-hi); margin-bottom: 2px; }
.fileanalyzer-header p { font-size: 13px; color: var(--text-muted); }

.fileanalyzer-dropzone {
  max-width: 900px; margin: 0 auto 18px;
  border: 2px dashed var(--border-glass-strong);
  border-radius: var(--r-lg);
  padding: 40px 20px;
  text-align: center; cursor: pointer;
  background: var(--bg-glass);
  transition: border-color var(--t-fast), background var(--t-fast);
}
.fileanalyzer-dropzone:hover, .fileanalyzer-dropzone.dragover {
  border-color: var(--primary);
  background: var(--bg-glass-strong);
}
.fileanalyzer-dropzone i { font-size: 30px; color: var(--primary); margin-bottom: 10px; }
.fileanalyzer-dropzone p { font-size: 14px; color: var(--text-hi); margin-bottom: 4px; }
.fileanalyzer-dropzone span { font-size: 12px; color: var(--text-muted); }

.fileanalyzer-file-info {
  max-width: 900px; margin: 0 auto 18px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--r-lg);
  padding: 16px;
}
.fileanalyzer-file-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.fileanalyzer-file-meta i { font-size: 20px; color: var(--secondary); }
.fileanalyzer-file-meta > div { flex: 1; min-width: 0; }
.fa-filename { font-size: 13.5px; font-weight: 600; color: var(--text-hi); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fa-filesize { font-size: 11.5px; color: var(--text-muted); }

.fileanalyzer-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.fa-action-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 14px; border-radius: var(--r-sm);
  background: var(--bg-glass-strong); border: 1px solid var(--border-glass-strong);
  color: var(--text-lo); font-size: 12.5px; cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.fa-action-btn:hover { color: var(--text-hi); }
.fa-action-btn.active { background: var(--grad-brand); color: white; border-color: transparent; }

.fileanalyzer-question { display: flex; gap: 8px; }
.fileanalyzer-question input {
  flex: 1; background: var(--bg-glass-strong); border: 1px solid var(--border-glass-strong);
  border-radius: var(--r-sm); padding: 10px 14px; color: var(--text-hi); font-size: 13px; outline: none;
}
.fileanalyzer-question input::placeholder { color: var(--text-muted); }
.fileanalyzer-question input:focus { border-color: var(--primary); }
.fileanalyzer-question .generate-btn { padding: 10px 18px; }

.fileanalyzer-output-wrap { max-width: 900px; margin: 0 auto; }

.fileanalyzer-empty {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 60px 20px; color: var(--text-muted); text-align: center;
}
.fileanalyzer-empty i { font-size: 34px; opacity: 0.5; }
.fileanalyzer-empty p { font-size: 13.5px; }

.fileanalyzer-result {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--r-lg); overflow: hidden; animation: msg-in 0.4s var(--ease);
}
.fileanalyzer-result-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--border-glass);
  font-size: 13px; font-weight: 600; color: var(--text-hi);
}
.fileanalyzer-result-body { padding: 18px 20px; font-size: 14px; line-height: 1.7; color: var(--text-lo); }
.fileanalyzer-result-body h1, .fileanalyzer-result-body h2, .fileanalyzer-result-body h3 { color: var(--text-hi); margin: 14px 0 8px; }
.fileanalyzer-result-body p { margin-bottom: 10px; }
.fileanalyzer-result-body ul, .fileanalyzer-result-body ol { margin: 0 0 10px 20px; }
.fileanalyzer-result-body li { margin-bottom: 4px; }
.fileanalyzer-result-body code { background: rgba(255,255,255,0.09); border-radius: 5px; padding: 1px 6px; font-family: "JetBrains Mono", monospace; font-size: 0.88em; }
.fileanalyzer-result-body pre { background: #0a0f1c; border: 1px solid var(--border-glass); border-radius: 10px; padding: 14px; overflow-x: auto; margin: 8px 0 12px; }
.fileanalyzer-result-body pre code { background: none; padding: 0; font-size: 12.5px; }
.fileanalyzer-result-body table { border-collapse: collapse; width: 100%; margin: 8px 0 12px; font-size: 13px; }
.fileanalyzer-result-body th, .fileanalyzer-result-body td { border: 1px solid var(--border-glass-strong); padding: 6px 10px; text-align: left; }
.fileanalyzer-result-body th { background: var(--bg-glass-strong); color: var(--text-hi); }

@media (max-width: 860px) {
  .fileanalyzer-area { padding: 20px 14px 32px; }
  .fileanalyzer-question { flex-direction: column; }
  .fileanalyzer-question .generate-btn { width: 100%; justify-content: center; }
}