/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d0d0f;
  --bg2: #141416;
  --bg3: #1c1c1f;
  --bg4: #252528;
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.14);
  --text: #e8e8ec;
  --text-muted: #6b6b80;
  --text-dim: #9999b0;
  --accent: #7c6aff;
  --accent-glow: rgba(124,106,255,0.25);
  --accent-soft: rgba(124,106,255,0.12);
  --user-bubble: #1e1c30;
  --ai-bubble: transparent;
  --sidebar-w: 260px;
  --radius: 14px;
  --radius-sm: 8px;
  --font: 'Sora', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --transition: 0.18s cubic-bezier(0.4,0,0.2,1);
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  overflow: hidden;
}

/* ===== LAYOUT ===== */
body { display: flex; height: 100vh; }

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  transition: transform var(--transition), min-width var(--transition), width var(--transition);
  overflow: hidden;
  gap: 0; /* remove any space between flex items */
  margin: 0;
}

.sidebar.collapsed {
  transform: translateX(calc(-1 * var(--sidebar-w)));
  min-width: 0;
  width: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
}

.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  overflow: hidden;
  margin-right: 1rem;
}
.logo-icon img {
  width: 130%;
  height: 130%;
  object-fit: contain;
}

.welcome-icon img {
  width: 90%;
  height: 90%;
  object-fit: contain;
}

.logo-text {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.3px;
  color: var(--text);
}

.donate-btn{
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 3px 5px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  cursor: pointer;
}


.donate-options{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-top:15px;
}

.donate-link{
  display:block;
  padding:10px;
  border-radius:8px;
  background:#111;
  text-decoration:none;
  color:white;
  text-align:center;
}


.new-chat-btn {
  width: 30px; height: 30px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.new-chat-btn:hover { border-color: var(--border-hover); color: var(--text); background: var(--bg3); }

.sidebar-section-label {
  padding: 16px 16px 6px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
}

.chat-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--bg4) transparent;
}

.chat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-dim);
  font-size: 13.5px;
  transition: all var(--transition);
  gap: 8px;
}
.chat-item:hover { background: var(--bg3); color: var(--text); }
.chat-item.active { background: var(--accent-soft); color: var(--accent); }
.chat-item-title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-item-del {
  opacity: 0; width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  border: none; background: transparent;
  color: var(--text-muted); cursor: pointer;
  border-radius: 4px; font-size: 14px;
  transition: all var(--transition);
  flex-shrink: 0;
}
.chat-item:hover .chat-item-del { opacity: 1; }
.chat-item-del:hover { color: #ff5f5f; background: rgba(255,95,95,0.1); }

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding-top: 6px;
  padding-right: 12px;
  padding-left: 12px;
  padding-bottom: 6px; /* explicit, no shorthand ambiguity */
}

.model-selector {
  position: relative;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-dim);
  transition: all var(--transition);
  user-select: none;
}
.model-selector:hover { border-color: var(--border-hover); color: var(--text); }
.model-dot { width: 8px; height: 8px; border-radius: 50%; background: #4ade80; flex-shrink: 0; box-shadow: 0 0 6px rgba(74,222,128,0.5); }
#modelLabel { flex: 1; font-size: 12px; font-family: var(--mono); }

.model-dropdown {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 0; right: 0;
  background: var(--bg3);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: none;
  z-index: 100;
  box-shadow: 0 -10px 30px rgba(0,0,0,0.4);
}
.model-dropdown.open { display: block; }
.model-option {
  padding: 9px 14px;
  font-size: 12.5px;
  font-family: var(--mono);
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
}
.model-option:hover { background: var(--bg4); color: var(--text); }
.model-option.active { color: var(--accent); background: var(--accent-soft); }

/* ===== MAIN ===== */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: var(--bg);
}

/* ===== TOPBAR ===== */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: relative;
  z-index: 10;
}

.sidebar-toggle {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}
.sidebar-toggle:hover { border-color: var(--border-hover); color: var(--text); background: var(--bg3); }

.topbar-title {
  flex: 1;
  font-size: 14px;
  color: var(--text-dim);
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.clear-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.clear-btn:hover { border-color: rgba(255,95,95,0.4); color: #ff5f5f; background: rgba(255,95,95,0.08); }

/* ===== MESSAGES ===== */
.messages-container {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--bg4) transparent;
}

/* ===== WELCOME ===== */
.welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: 60px 24px 40px;
  text-align: center;
  animation: fadeUp 0.5s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.welcome-icon {
  width: 110px; height: 110px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  margin-bottom: 24px;
}

.welcome-title {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--text);
  margin-bottom: 8px;
}

.welcome-sub {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.suggestion-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  max-width: 560px;
  width: 100%;
}

.suggestion-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
  color: var(--text-dim);
  font-size: 13.5px;
  font-family: var(--font);
  transition: all var(--transition);
  line-height: 1.4;
}
.suggestion-card:hover { border-color: rgba(124,106,255,0.35); background: var(--accent-soft); color: var(--text); transform: translateY(-1px); }
.suggestion-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

/* ===== MESSAGES ===== */
.messages {
  padding: 24px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 820px;
  margin: 0 auto;
  width: 100%;
}

.message {
  display: flex;
  flex-direction: column;
  animation: fadeUp 0.25s ease;
}

.message.user { align-items: flex-end; }
.message.assistant { align-items: flex-start; }

.message-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  max-width: 85%;
}
.message.user .message-row { flex-direction: row-reverse; }
.message.assistant .message-row { flex-direction: row; }

.avatar {
  width: 30px; height: 30px;
  border-radius: 9px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  font-weight: 600;
  margin-top: 2px;
}
.avatar.user { color: #fff; }
.avatar.assistant { color: var(--accent); }

.bubble {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14.5px;
  line-height: 1.7;
  word-break: break-word;
}

.message.user .bubble {
  background: var(--user-bubble);
  border: 1px solid rgba(124,106,255,0.2);
  border-radius: var(--radius) var(--radius) 4px var(--radius);
  color: var(--text);
}

.message.assistant .bubble {
  background: transparent;
  color: var(--text);
  padding-left: 0;
  padding-right: 0;
}

/* Markdown-ish styling inside assistant bubbles */
.bubble p { margin: 0 0 10px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  color: #d4a5ff;
}
.bubble pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 12px 0;
  position: relative;
}
.bubble pre code {
  background: none;
  border: none;
  padding: 0;
  color: #c9d1d9;
  font-size: 13px;
  line-height: 1.6;
}
.bubble ul, .bubble ol { padding-left: 20px; margin: 8px 0; }
.bubble li { margin: 4px 0; }
.bubble strong { color: #fff; font-weight: 600; }
.bubble h1, .bubble h2, .bubble h3 {
  color: var(--text);
  font-weight: 600;
  margin: 16px 0 8px;
  letter-spacing: -0.3px;
}
.bubble h1 { font-size: 20px; }
.bubble h2 { font-size: 17px; }
.bubble h3 { font-size: 15px; }
.bubble hr { border: none; border-top: 1px solid var(--border); margin: 14px 0; }
.bubble blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  margin: 10px 0;
  color: var(--text-dim);
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
}
.typing-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: typingBounce 1.2s infinite;
  opacity: 0.7;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-5px); opacity: 1; }
}

/* Message actions */
.msg-actions {
  display: flex;
  gap: 6px;
  padding: 6px 0 4px;
  opacity: 0;
  transition: opacity var(--transition);
}
.message.assistant:hover .msg-actions { opacity: 1; }
.msg-action-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 4px 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 11.5px;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}
.msg-action-btn:hover { border-color: var(--border-hover); color: var(--text); }

/* ===== INPUT AREA ===== */
.input-area {
  padding: 14px 20px 18px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.input-wrapper {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.input-wrapper:focus-within {
  border-color: rgba(124,106,255,0.45);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.user-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 14.5px;
  line-height: 1.6;
  resize: none;
  max-height: 200px;
  overflow-y: auto;
  scrollbar-width: thin;
}
.user-input::placeholder { color: var(--text-muted); }

.send-btn {
  width: 34px; height: 34px;
  background: var(--accent);
  border: none;
  border-radius: 9px;
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  opacity: 0.4;
}
.send-btn:not(:disabled) { opacity: 1; }
.send-btn:not(:disabled):hover { background: #9280ff; transform: scale(1.05); }
.send-btn:disabled { cursor: not-allowed; }

.input-disclaimer {
  max-width: 820px;
  margin: 8px auto 0;
  font-size: 11.5px;
  color: var(--text-muted);
  text-align: center;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 99px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .sidebar { position: fixed; z-index: 50; left: 0; top: 0; bottom: 0; transform: translateX(-100%); }
  .sidebar.mobile-open { transform: translateX(0); }
  .suggestion-grid { grid-template-columns: 1fr; }
}

/* ===== SETTINGS MODAL ===== */
/* Modal overlay */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  display: none;              /* hidden by default */
  align-items: center;        /* vertical centering */
  justify-content: center;    /* horizontal centering */
  z-index: 200;
}

/* Modal box */
.modal-content {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 520px;
  max-width: 95%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: fadeUp 0.25s ease;
}


.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.modal-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.close-btn {
  font-size: 20px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
}
.close-btn:hover { color: var(--accent); }

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.settings-btn {
  width: 30px; height: 30px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 1rem;
}

.setting-item label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
}

.setting-item input, .setting-item select {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  transition: all var(--transition);
}
.setting-item input:focus, .setting-item select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}

#saveSettingsBtn {
  padding: 8px 14px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 13px;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}
#saveSettingsBtn:hover { background: #9280ff; transform: scale(1.03); }

/* System prompt textarea */
.setting-item textarea {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  transition: all var(--transition);
  width: 100%;
}
.setting-item textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.label-hint {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 6px;
}

/* Trigger list */
.trigger-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}

.trigger-row {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}
.trigger-row:focus-within { border-color: rgba(124,106,255,0.45); }

.trigger-row-top {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

.trigger-row input, .trigger-row select {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 12px;
  font-family: var(--mono);
  transition: all var(--transition);
}
.trigger-row input:focus, .trigger-row select:focus {
  outline: none;
  border-color: var(--accent);
}
.trigger-row input.trigger-match { flex: 1; }
.trigger-row select.trigger-type { flex: 0 0 84px; }

/* JS action - code editor */
.trigger-action {
  width: 100%;
  background: #090909 !important;
  border: none !important;
  border-radius: 0 !important;
  color: #b0bec5 !important;
  font-family: var(--mono) !important;
  font-size: 12px !important;
  line-height: 1.6;
  padding: 10px 12px !important;
  resize: vertical;
  min-height: 76px;
  display: block;
  outline: none !important;
  box-shadow: none !important;
}
.trigger-action::placeholder { color: #333; }

.trigger-del-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 4px;
  transition: all var(--transition);
  flex-shrink: 0;
}
.trigger-del-btn:hover { color: #ff5f5f; background: rgba(255,95,95,0.1); }

.add-trigger-btn {
  background: transparent;
  border: 1px dashed var(--border-hover);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--font);
  padding: 7px 12px;
  cursor: pointer;
  width: 100%;
  transition: all var(--transition);
}
.add-trigger-btn:hover { border-color: var(--accent); color: var(--accent); }

/* JS run button inside code blocks */
.run-js-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(124,106,255,0.3);
  border-radius: 6px;
  color: var(--accent);
  font-size: 11px;
  font-family: var(--mono);
  padding: 3px 8px;
  cursor: pointer;
  transition: all var(--transition);
}
.run-js-btn:hover { background: var(--accent); color: #fff; }

.js-output {
  margin-top: 8px;
  background: #0a0a0c;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: #c9d1d9;
  white-space: pre-wrap;
  word-break: break-all;
}
.js-output.error { border-left-color: #ff5f5f; color: #ff9999; }
.js-output.success { border-left-color: #4ade80; }

/* Trigger fired toast */
.trigger-toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg3);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text);
  z-index: 999;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  animation: fadeUp 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  display: flex;
  gap: 8px;
  align-items: center;
}
.trigger-toast-icon { color: var(--accent); font-size: 15px; }
.trigger-toast-error { border-color: rgba(255,95,95,0.4); }
.trigger-toast-error .trigger-toast-icon { color: #ff5f5f; }

/* JS label above action textarea */
.trigger-row-bottom {
  position: relative;
}
.trigger-js-label {
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 10px;
  font-family: var(--mono);
  color: var(--text-muted);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  pointer-events: none;
  letter-spacing: 0.5px;
  opacity: 0.7;
}

@keyframes fadeOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(6px); }
}
/* ===== PLAYGROUND ===== */
.playground-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.playground-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

.playground-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 300;
  padding: 16px;
}
.playground-modal.open { display: flex; animation: fadeUp 0.22s ease; }

.playground-inner {
  background: var(--bg2);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius);
  width: 100%;
  max-width: 1400px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
}

.playground-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
  flex-shrink: 0;
}

.playground-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.2px;
}

.playground-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pg-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 12.5px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.pg-btn:hover { background: #9280ff; transform: scale(1.03); }

.pg-btn-ghost {
  background: var(--bg4);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.pg-btn-ghost:hover { background: var(--bg3); color: var(--text); transform: none; }

.pg-close-btn {
  width: 28px; height: 28px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  line-height: 1;
}
.pg-close-btn:hover { color: #ff5f5f; border-color: rgba(255,95,95,0.4); background: rgba(255,95,95,0.08); }

.playground-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* ---- Editors ---- */
.pg-editors {
  width: 42%;
  min-width: 220px;
  max-width: 65%;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  overflow: hidden;
  resize: none;
  position: relative;
}

.pg-pane {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 40px;
  overflow: hidden;
  transition: flex var(--transition);
}
.pg-pane.collapsed { flex: 0 0 34px; }

.pg-pane-label {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  font-size: 11.5px;
  font-weight: 500;
  font-family: var(--mono);
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  flex-shrink: 0;
  user-select: none;
}

.pg-lang-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.pg-pane-toggle {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0 2px;
  transition: color var(--transition);
}
.pg-pane-toggle:hover { color: var(--text); }

.pg-editor {
  flex: 1;
  background: #0a0a0c;
  color: #c9d1d9;
  border: none;
  outline: none;
  resize: none;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  tab-size: 2;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--bg4) transparent;
  width: 100%;
}
.pg-pane.collapsed .pg-editor { display: none; }
.pg-editor::placeholder { color: #2a2a35; }

.pg-resizer {
  height: 4px;
  background: var(--border);
  cursor: row-resize;
  flex-shrink: 0;
  transition: background var(--transition);
}
.pg-resizer:hover, .pg-resizer.dragging { background: var(--accent); }

/* ---- Preview ---- */
.pg-preview-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
}

.pg-preview-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 14px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  font-size: 11.5px;
  font-family: var(--mono);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.pg-preview-controls {
  display: flex;
  gap: 4px;
}

.pg-device-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  font-size: 10px;
  padding: 3px 6px;
  cursor: pointer;
  transition: all var(--transition);
}
.pg-device-btn:hover { border-color: var(--border-hover); color: var(--text); }
.pg-device-btn.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

.pg-preview-wrap {
  flex: 1;
  display: flex;
  justify-content: center;
  background: #e8e8ec;
  overflow: auto;
  padding: 0;
  transition: background var(--transition);
}

#pgPreview {
  flex: 1;
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
  transition: width var(--transition);
  display: block;
}

/* ===== HORIZONTAL RESIZE HANDLE between editors and preview ===== */
.pg-col-resizer {
  width: 5px;
  cursor: col-resize;
  background: var(--border);
  flex-shrink: 0;
  transition: background var(--transition);
}
.pg-col-resizer:hover, .pg-col-resizer.dragging { background: var(--accent); }

/* ===== PLAYGROUND AI PANEL ===== */

.pg-ai-toggle-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg4);
  color: var(--text-dim);
  font-size: 12.5px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.pg-ai-toggle-btn:hover,
.pg-ai-toggle-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.pg-ai-panel {
  width: 0;
  min-width: 0;
  max-width: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--bg2);
  border-right: 0px solid var(--border);
  transition: width 0.25s cubic-bezier(0.4,0,0.2,1),
              min-width 0.25s cubic-bezier(0.4,0,0.2,1),
              max-width 0.25s cubic-bezier(0.4,0,0.2,1),
              border-right-width 0.25s;
  flex-shrink: 0;
}

.pg-ai-panel.open {
  width: 300px;
  min-width: 240px;
  max-width: 380px;
  border-right-width: 1px;
}

.pg-ai-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
  flex-shrink: 0;
}

.pg-ai-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.3px;
}

.pg-ai-clear-btn {
  font-size: 11px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-muted);
  padding: 3px 8px;
  cursor: pointer;
  transition: all var(--transition);
}
.pg-ai-clear-btn:hover { color: #ff5f5f; border-color: rgba(255,95,95,0.4); }

.pg-ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--bg4) transparent;
}

.pg-ai-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 8px;
  gap: 10px;
  animation: fadeUp 0.35s ease;
}

.pg-ai-welcome-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid rgba(124,106,255,0.3);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.pg-ai-welcome p {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

.pg-ai-suggestions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  width: 100%;
}

.pg-ai-suggestion {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 11px;
  font-family: var(--font);
  padding: 7px 8px;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition);
  line-height: 1.4;
}
.pg-ai-suggestion:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* AI message bubbles */
.pg-msg {
  display: flex;
  flex-direction: column;
  gap: 3px;
  animation: fadeUp 0.2s ease;
}

.pg-msg-role {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  padding: 0 2px;
}

.pg-msg.pg-msg-user .pg-msg-role { color: var(--text-muted); text-align: right; }
.pg-msg.pg-msg-assistant .pg-msg-role { color: var(--accent); }

.pg-msg-bubble {
  padding: 9px 11px;
  border-radius: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  word-break: break-word;
}

.pg-msg-user .pg-msg-bubble {
  background: var(--user-bubble);
  border: 1px solid var(--border);
  border-radius: 10px 10px 4px 10px;
  color: var(--text);
  align-self: flex-end;
  max-width: 90%;
  margin-left: auto;
}

.pg-msg-assistant .pg-msg-bubble {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px 10px 10px 4px;
  color: var(--text);
  max-width: 100%;
}

.pg-msg-assistant .pg-msg-bubble p { margin: 0 0 4px; font-size: 12px; }
.pg-msg-assistant .pg-msg-bubble code {
  background: var(--bg);
  border-radius: 4px;
  padding: 1px 4px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
}

/* Code applied badge */
.pg-applied-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 6px;
  padding: 4px 8px;
  border-radius: 5px;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.3);
  color: #4ade80;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.pg-applied-badge:hover { background: rgba(74,222,128,0.2); }

/* Typing indicator */
.pg-typing {
  display: flex;
  gap: 4px;
  padding: 10px 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px 10px 10px 4px;
  width: fit-content;
}
.pg-typing span {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: pgBounce 1.2s infinite ease-in-out;
}
.pg-typing span:nth-child(2) { animation-delay: 0.2s; }
.pg-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes pgBounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-5px); opacity: 1; }
}

/* AI Input */
.pg-ai-input-area {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 10px 10px;
  border-top: 1px solid var(--border);
  background: var(--bg3);
  flex-shrink: 0;
}

.pg-ai-input {
  flex: 1;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 12.5px;
  padding: 8px 10px;
  resize: none;
  outline: none;
  min-height: 36px;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.5;
  transition: border-color var(--transition);
  scrollbar-width: thin;
}
.pg-ai-input:focus { border-color: var(--accent); }
.pg-ai-input::placeholder { color: var(--text-muted); }

.pg-ai-send {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}
.pg-ai-send:disabled { background: var(--bg4); color: var(--text-muted); cursor: not-allowed; }

.pg-ai-send:not(:disabled):hover { background: #9280ff; transform: scale(1.06); }