@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ===== THEME VARIABLES ===== */
.dn-chatbot {
  /* Dark theme (default) */
  --dn-bg: #0a0b0f;
  --dn-panel-main: #0f1318;
  --dn-panel-exc: #15120f;
  --dn-border: #1a2230;
  --dn-border-exc: #2a2218;
  --dn-accent: #5b9fd4;
  --dn-accent-exc: #d4a84b;
  --dn-text: #c8dae8;
  --dn-text-exc: #d4c8a8;
  --dn-user-bubble: #1a2c3e;
  --dn-user-bubble-exc: #3e2c1a;
  --dn-ai-bubble: #141c26;
  --dn-ai-bubble-exc: #1e1a14;
  --dn-input-bg: #152030;
  --dn-input-border: #1e3045;
  --dn-input-bg-exc: #201a12;
  --dn-input-border-exc: #352a18;
  --dn-topbar-bg: #0a0b0f;
  --dn-sidebar-bg: #111115;
  --dn-modal-bg: #141418;
  --dn-text-muted: #666;
  --dn-text-subtle: #888;
  --dn-text-dim: #444;
  --dn-hover: rgba(255,255,255,.05);
  --dn-empty-main: #1e3a4e;
  --dn-empty-exc: #4e3a1e;
  --dn-font-size: 14px;
}

.dn-chatbot.dn-light {
  --dn-bg: #f5f5f5;
  --dn-panel-main: #ffffff;
  --dn-panel-exc: #fffbf2;
  --dn-border: #d4dbe4;
  --dn-border-exc: #e0d4b8;
  --dn-text: #1a2530;
  --dn-text-exc: #3a2e18;
  --dn-user-bubble: #dce8f4;
  --dn-user-bubble-exc: #f4e8d0;
  --dn-ai-bubble: #eef3f8;
  --dn-ai-bubble-exc: #f8f3e8;
  --dn-input-bg: #eef3f8;
  --dn-input-border: #c4d4e4;
  --dn-input-bg-exc: #f8f3e8;
  --dn-input-border-exc: #e4d4b8;
  --dn-topbar-bg: #ffffff;
  --dn-sidebar-bg: #fafafa;
  --dn-modal-bg: #ffffff;
  --dn-text-muted: #888;
  --dn-text-subtle: #666;
  --dn-text-dim: #bbb;
  --dn-hover: rgba(0,0,0,.04);
  --dn-empty-main: #c4d8e8;
  --dn-empty-exc: #e8d8c0;
}

/* ===== BASE ===== */
.dn-chatbot {
  box-sizing: border-box;
  font-family: 'IBM Plex Sans', -apple-system, sans-serif;
  background: var(--dn-bg);
  color: var(--dn-text);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 600px;
  position: relative;
  font-size: var(--dn-font-size);
  border: 1px solid var(--dn-border);
}
.dn-chatbot.dn-fullscreen {
  position: fixed !important;
  inset: 0 !important;
  z-index: 99999 !important;
  height: 100vh !important;
  width: 100vw !important;
  border-radius: 0 !important;
  border: none !important;
}
.dn-chatbot *, .dn-chatbot *::before, .dn-chatbot *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== TOPBAR ===== */
.dn-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 16px; border-bottom: 1px solid var(--dn-border);
  height: 48px; gap: 8px; background: var(--dn-topbar-bg); flex-shrink: 0;
}
.dn-topbar-left, .dn-topbar-right { display: flex; align-items: center; gap: 8px; }
.dn-topbar-title {
  font-family: 'JetBrains Mono', monospace; font-size: 13px;
  color: var(--dn-text-muted); letter-spacing: .08em; font-weight: 700;
}
.dn-topbar-logo { width: 28px; height: 28px; border-radius: 6px; }
.dn-badge {
  font-size: 9px; color: var(--dn-text-dim); padding: 2px 6px;
  border: 1px solid var(--dn-border); border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
}
.dn-bot-name-badge { color: var(--dn-accent); border-color: var(--dn-accent); opacity: .7; }
.dn-chatbot .dn-topbar .dn-btn-top {
  background: #1a1a1e !important; border: 1.5px solid #3a3a42 !important;
  color: #fff !important; padding: 7px 10px; border-radius: 10px;
  font-size: 12px; cursor: pointer; font-family: 'IBM Plex Sans', sans-serif;
  transition: all .2s; white-space: nowrap;
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 36px; height: 36px;
}
.dn-chatbot .dn-topbar .dn-btn-top:hover { background: #2a2a30 !important; border-color: #505058 !important; }
.dn-chatbot .dn-topbar .dn-btn-top svg { stroke: #fff !important; fill: none !important; color: #fff !important; }

/* ===== HISTORY SIDEBAR ===== */
.dn-history-sidebar {
  display: none; position: absolute; top: 0; left: 0; width: 300px; height: 100%;
  background: var(--dn-sidebar-bg); border-right: 1px solid var(--dn-border);
  z-index: 90; flex-direction: column;
}
.dn-history-sidebar.open { display: flex; }
.dn-history-sidebar.pinned {
  position: relative; flex-shrink: 0;
}
.dn-history-header {
  padding: 14px 16px; border-bottom: 1px solid var(--dn-border);
  display: flex; justify-content: space-between; align-items: center;
}
.dn-history-header h3 { font-size: 14px; color: var(--dn-text-subtle); font-family: 'JetBrains Mono', monospace; margin: 0; }
.dn-history-close {
  background: #1a1a1e; border: 1px solid #3a3a42; color: #fff; font-size: 14px;
  cursor: pointer; padding: 4px 8px; border-radius: 6px; transition: all .15s;
}
.dn-history-close:hover { background: #3a1515; border-color: #882222; color: #ff6666; }
.dn-history-pin-btn {
  background: #1a1a1e; border: 1px solid #3a3a42; color: #fff; font-size: 13px;
  cursor: pointer; padding: 4px 8px; border-radius: 6px; transition: all .15s;
}
.dn-history-pin-btn:hover { background: #2a2a30; border-color: #505058; }
.dn-history-pin-btn.active { background: #1a2a3a; border-color: var(--dn-accent); color: var(--dn-accent); }
.dn-history-search {
  width: 100%; background: var(--dn-panel-main); border: 1px solid var(--dn-border);
  color: var(--dn-text); padding: 7px 10px; border-radius: 6px; font-size: 12px; outline: none;
  font-family: 'IBM Plex Sans', sans-serif;
}
.dn-history-list { flex: 1; overflow-y: auto; padding: 8px; }
.dn-history-item {
  padding: 10px 12px; border-radius: 8px; cursor: pointer; margin-bottom: 4px;
  transition: background .2s; position: relative;
}
.dn-history-item:hover { background: var(--dn-hover); }
.dn-history-item.active { background: rgba(91,159,212,.15); }
.dn-history-item.pinned-item { border-left: 2px solid var(--dn-accent); }
.dn-history-item-title {
  font-size: 13px; color: var(--dn-text); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; padding-right: 50px;
}
.dn-history-item-date { font-size: 10px; color: var(--dn-text-dim); margin-top: 2px; font-family: 'IBM Plex Mono', monospace; }
.dn-history-item-actions {
  position: absolute; top: 8px; right: 6px; display: flex; gap: 2px;
}
.dn-history-item:hover .dn-history-item-actions { opacity: 1; }
.dn-history-item.pinned-item .dn-history-item-actions { opacity: 1; }
.dn-history-action-btn {
  background: #1a1a1e; border: 1px solid #3a3a42; color: #fff; font-size: 11px;
  cursor: pointer; padding: 3px 6px; border-radius: 5px; transition: all .15s;
  display: inline-flex; align-items: center; justify-content: center;
}
.dn-history-action-btn:hover { background: #2a2a30; border-color: #505058; }
.dn-history-action-btn.del-btn:hover { background: #3a1515; border-color: #882222; color: #ff6666; }
.dn-history-actions { padding: 12px; border-top: 1px solid var(--dn-border); }
.dn-btn-del {
  width: 100%; background: #1a1a1e; color: #ff6666; border: 1.5px solid #3a2222;
  padding: 8px; border-radius: 8px; font-size: 12px; cursor: pointer; margin-top: 6px;
  transition: all .2s;
}
.dn-btn-del:hover { background: #2a1515; border-color: #882222; }

/* ===== NAVIGATOR ===== */
.dn-nav-overlay {
  display: none; position: absolute; inset: 0; background: rgba(0,0,0,.6);
  z-index: 95; justify-content: center; align-items: center;
}
.dn-nav-overlay.open { display: flex; }
.dn-nav-panel {
  background: var(--dn-modal-bg); border: 1px solid var(--dn-border);
  border-radius: 12px; width: 700px; max-width: 92%; max-height: 80%;
  display: flex; flex-direction: column; overflow: hidden;
}
.dn-nav-header { padding: 12px 16px; border-bottom: 1px solid var(--dn-border); display: flex; gap: 8px; align-items: center; }
.dn-nav-header input {
  flex: 1; background: var(--dn-panel-main); border: 1px solid var(--dn-border);
  color: var(--dn-text); padding: 8px 12px; border-radius: 8px; font-size: 13px; outline: none;
}
.dn-nav-close { background: none; border: none; color: var(--dn-text-muted); font-size: 18px; cursor: pointer; }
.dn-nav-body { display: flex; flex: 1; overflow: hidden; }
.dn-nav-col { flex: 1; overflow-y: auto; padding: 8px; }
.dn-nav-col:first-child { border-right: 1px solid var(--dn-border); }
.dn-nav-col-title {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 700;
  padding: 6px 8px; margin-bottom: 4px; border-radius: 4px; text-align: center;
}
.dn-nav-item {
  padding: 6px 10px; border-radius: 6px; cursor: pointer; margin-bottom: 2px;
  font-size: 12px; line-height: 1.4; transition: background .15s; display: flex; gap: 6px;
}
.dn-nav-item:hover { background: var(--dn-hover); }
.dn-nav-item-role { font-size: 10px; font-weight: 700; flex-shrink: 0; }
.dn-nav-item-text { color: var(--dn-text-subtle); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dn-nav-item mark { background: rgba(212,168,75,.3); color: var(--dn-text); border-radius: 2px; }

/* ===== CONTENT WRAPPER (sidebar + panels) ===== */
.dn-content {
  display: flex; flex: 1; min-height: 0; position: relative; overflow: hidden;
}

/* ===== PANELS ===== */
.dn-panels { display: flex; flex: 1; gap: 2px; padding: 8px; overflow: hidden; min-height: 0; min-width: 0; }
.dn-panel {
  display: flex; flex-direction: column; border-radius: 10px; overflow: hidden;
  border: 1px solid var(--dn-border); min-width: 0; flex: 1;
}
.dn-panel-main { background: var(--dn-panel-main); }
.dn-panel-exc { background: var(--dn-panel-exc); border-color: var(--dn-border-exc); }
.dn-panel-header {
  padding: 8px 16px; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--dn-border); flex-shrink: 0;
}
.dn-panel-title {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 700; color: var(--dn-accent);
}
.dn-panel-title-exc { color: var(--dn-accent-exc); }
.dn-btn-clear {
  background: #1a1a1e !important; border: 1.5px solid #3a3a42 !important; color: #fff !important;
  padding: 5px 12px; border-radius: 8px; font-size: 10px; cursor: pointer;
  font-family: 'JetBrains Mono', monospace; transition: all .2s;
}
.dn-btn-clear:hover { background: #2a2a30 !important; border-color: #505058 !important; }

/* ===== MESSAGES ===== */
.dn-messages {
  flex: 1; overflow-y: auto; overflow-x: hidden; padding: 16px;
  display: flex; flex-direction: column; gap: 10px; min-width: 0;
}
.dn-messages::-webkit-scrollbar { width: 4px; }
.dn-messages::-webkit-scrollbar-track { background: transparent; }
.dn-messages::-webkit-scrollbar-thumb { background: var(--dn-border); border-radius: 2px; }

.dn-empty-state {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-size: 13px; text-align: center; line-height: 1.8;
  font-family: 'JetBrains Mono', monospace; color: var(--dn-empty-main);
}
.dn-empty-exc { color: var(--dn-empty-exc); }
.dn-suggested-prompts { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; max-width: 400px; }
.dn-suggested-btn {
  background: var(--dn-hover); border: 1px solid var(--dn-border);
  color: var(--dn-text-subtle); padding: 10px 16px; border-radius: 10px;
  font-size: 13px; cursor: pointer; text-align: left; transition: all .2s;
  font-family: 'IBM Plex Sans', sans-serif;
}
.dn-suggested-btn:hover { border-color: var(--dn-accent); color: var(--dn-text); }

.dn-msg { display: flex; position: relative; min-width: 0; }
.dn-msg-user { align-self: flex-end; max-width: 88%; }
.dn-msg-ai { align-self: flex-start; width: 100%; }
.dn-msg-bubble {
  padding: 10px 14px; border-radius: 14px; line-height: 1.6;
  word-break: break-word; overflow-wrap: anywhere; font-size: var(--dn-font-size);
  min-width: 0; overflow: hidden;
}
.dn-msg-user .dn-msg-bubble { background: var(--dn-user-bubble); color: var(--dn-text); border-bottom-right-radius: 4px; }
.dn-msg-ai .dn-msg-bubble { background: var(--dn-ai-bubble); color: var(--dn-text); border-bottom-left-radius: 4px; }
.dn-panel-exc .dn-msg-user .dn-msg-bubble { background: var(--dn-user-bubble-exc); color: var(--dn-text-exc); }
.dn-panel-exc .dn-msg-ai .dn-msg-bubble { background: var(--dn-ai-bubble-exc); color: var(--dn-text-exc); }

/* Markdown in bubbles */
.dn-msg-bubble p { margin: 0 0 8px 0; }
.dn-msg-bubble p:last-child { margin-bottom: 0; }
.dn-msg-bubble strong { font-weight: 600; }
.dn-msg-bubble code { background: rgba(128,128,128,.15); padding: 1px 5px; border-radius: 3px; font-family: 'IBM Plex Mono', monospace; font-size: .9em; }
.dn-msg-bubble pre { background: rgba(0,0,0,.2); padding: 10px 12px; border-radius: 6px; overflow-x: auto; margin: 8px 0; }
.dn-msg-bubble pre code { background: none; padding: 0; font-size: 12px; line-height: 1.5; }
.dn-msg-bubble ul, .dn-msg-bubble ol { margin: 6px 0; padding-left: 20px; }
.dn-msg-bubble li { margin-bottom: 4px; }
.dn-msg-bubble blockquote { border-left: 3px solid var(--dn-border); padding-left: 12px; margin: 8px 0; color: var(--dn-text-subtle); }
.dn-msg-bubble h1, .dn-msg-bubble h2, .dn-msg-bubble h3 { margin: 10px 0 6px 0; font-size: 1em; font-weight: 700; }
.dn-msg-bubble a { color: var(--dn-accent); }
.dn-msg-bubble table { border-collapse: collapse; margin: 8px 0; font-size: 13px; }
.dn-msg-bubble th, .dn-msg-bubble td { border: 1px solid var(--dn-border); padding: 4px 8px; }

/* MSG ACTIONS */
.dn-msg-actions { display: flex; gap: 4px; margin-top: 4px; opacity: 0; transition: opacity .2s; }
.dn-msg:hover .dn-msg-actions { opacity: 1; }
.dn-msg-action-btn {
  background: #1a1a1e !important; border: 1.5px solid #3a3a42 !important; color: #fff !important;
  padding: 4px 7px; border-radius: 6px; font-size: 11px; cursor: pointer;
  font-family: 'IBM Plex Mono', monospace; transition: all .15s;
  display: inline-flex; align-items: center; justify-content: center;
}
.dn-msg-action-btn:hover { background: #2a2a30 !important; border-color: #505058 !important; }
.dn-msg-del-btn:hover { background: #3a1515 !important; border-color: #882222 !important; color: #ff6666 !important; }
.dn-msg-action-btn svg { stroke: #fff !important; fill: none !important; color: #fff !important; }
.dn-btn-top svg, .dn-msg-action-btn svg { vertical-align: middle; stroke: #fff !important; fill: none !important; color: #fff !important; }
.dn-chatbot .dn-btn-attach svg { vertical-align: middle; stroke: #fff !important; fill: none !important; color: #fff !important; }

/* ===== STREAMING ===== */
.dn-stream-cursor {
  display: inline-block; width: 2px; height: 1em; vertical-align: text-bottom;
  margin-left: 2px; animation: dn-cursor-blink .8s ease-in-out infinite;
  background: var(--dn-accent);
}
@keyframes dn-cursor-blink { 0%,100%{opacity:0} 50%{opacity:1} }
.dn-stream-thinking {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px;
  border-radius: 8px; font-size: 12px; animation: dn-thinking-pulse 1.5s ease-in-out infinite;
  color: var(--dn-accent); background: rgba(91,159,212,.08);
}
@keyframes dn-thinking-pulse { 0%,100%{opacity:.5} 50%{opacity:1} }
.dn-stream-word { display: inline; animation: dn-word-fade .3s ease-out forwards; }
@keyframes dn-word-fade { from{opacity:0;filter:blur(2px)} to{opacity:1;filter:blur(0)} }
.dn-stream-done .dn-stream-cursor { animation: dn-cursor-fadeout .4s ease-out forwards; }
@keyframes dn-cursor-fadeout { to{opacity:0} }

/* TYPING DOTS */
.dn-typing { display: flex; gap: 4px; padding: 8px 14px; align-self: flex-start; }
.dn-typing-dot {
  width: 6px; height: 6px; border-radius: 50%; background: #ffffff;
  opacity: .4; animation: dn-dot-blink 1.2s ease-in-out infinite;
}
.dn-typing-dot:nth-child(2) { animation-delay: .2s; }
.dn-typing-dot:nth-child(3) { animation-delay: .4s; }
@keyframes dn-dot-blink { 0%,100%{opacity:.2;transform:scale(.8)} 50%{opacity:.7;transform:scale(1.1)} }

/* ===== INPUT AREA ===== */
.dn-input-wrap { display: flex; flex-direction: column; flex-shrink: 0; }
.dn-btn-new-chat {
  background: #1a1a1e !important; border: 1.5px solid #3a3a42 !important; color: #fff !important;
  font-size: 16px; cursor: pointer; padding: 4px 8px; margin: 2px 0 0 12px;
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: 8px; transition: all .2s; font-family: 'JetBrains Mono', monospace; font-weight: 700;
}
.dn-btn-new-chat:hover { background: #2a2a30 !important; border-color: #505058 !important; }
.dn-input-area {
  padding: 10px 12px; display: flex; gap: 8px; align-items: flex-end;
  border-top: 1px solid var(--dn-border); flex-shrink: 0;
}
.dn-textarea {
  width: 100%; min-height: 40px; max-height: 400px; resize: vertical;
  border-radius: 10px; padding: 10px 14px; font-size: var(--dn-font-size);
  font-family: 'IBM Plex Sans', sans-serif; line-height: 1.5; outline: none;
  background: var(--dn-input-bg); border: 1px solid var(--dn-input-border); color: var(--dn-text);
}
.dn-textarea:focus { border-color: var(--dn-accent); }
.dn-textarea::placeholder { color: var(--dn-text-dim); }
.dn-panel-exc .dn-textarea { background: var(--dn-input-bg-exc); border-color: var(--dn-input-border-exc); color: var(--dn-text-exc); }
.dn-panel-exc .dn-textarea:focus { border-color: var(--dn-accent-exc); }

.dn-btn-attach {
  background: #1a1a1e !important; border: 1.5px solid #3a3a42 !important; color: #fff !important;
  width: 38px; height: 38px; border-radius: 8px; cursor: pointer; font-size: 16px;
  display: flex; align-items: center; justify-content: center; transition: all .2s; flex-shrink: 0;
}
.dn-btn-attach:hover { background: #2a2a30 !important; border-color: #505058 !important; }
.dn-btn-attach svg { stroke: #fff !important; fill: none !important; color: #fff !important; }
.dn-btn-send {
  border: 1.5px solid #3a3a42 !important; width: 38px; height: 38px; border-radius: 8px; font-size: 16px; font-weight: 700;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all .2s; flex-shrink: 0; background: #1a1a1e !important; color: #fff !important;
  font-family: 'JetBrains Mono', monospace;
}
.dn-btn-send:hover { background: #2a2a30 !important; border-color: #505058 !important; }
.dn-btn-send-exc { background: #1a1a1e !important; border-color: #3a3a42 !important; }
.dn-btn-send:disabled { opacity: .3; cursor: default; }
.dn-btn-send.dn-is-stop { background: #8a2a2a !important; border: 1px solid #aa3333 !important; color: #ff8888 !important; }

.dn-attached-file {
  display: flex; align-items: center; gap: 6px; padding: 4px 10px;
  background: var(--dn-hover); border-radius: 6px; font-size: 11px; color: var(--dn-text-subtle); margin-bottom: 6px;
}
.dn-attached-file .dn-remove-file { background: none; border: none; color: var(--dn-text-muted); cursor: pointer; font-size: 14px; }

/* ===== EDIT MODE ===== */
.dn-edit-textarea {
  width: 100%; background: rgba(0,0,0,.15); border: 1px solid var(--dn-border);
  color: inherit; padding: 8px 10px; border-radius: 8px; font-size: var(--dn-font-size);
  font-family: 'IBM Plex Sans', sans-serif; line-height: 1.5; resize: vertical; min-height: 40px; outline: none;
}
.dn-edit-actions { display: flex; gap: 6px; margin-top: 6px; }
.dn-edit-btn {
  padding: 5px 14px; border-radius: 6px; font-size: 11px; cursor: pointer;
  border: 1.5px solid #3a3a42 !important; background: #1a1a1e !important; color: #fff !important;
  font-family: 'IBM Plex Sans', sans-serif; font-weight: 600; transition: all .15s;
}
.dn-edit-btn:hover { background: #2a2a30 !important; border-color: #505058 !important; }
.dn-edit-btn-save { border-color: var(--dn-accent) !important; }
.dn-edit-btn-regen { border-color: var(--dn-accent-exc) !important; }
.dn-edit-btn-cancel { opacity: .7; }

/* ===== RESIZER ===== */
.dn-resizer {
  width: 8px; cursor: col-resize; background: transparent; display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
  transition: background .2s; border-radius: 4px; margin: 0 -3px; z-index: 5;
}
.dn-resizer:hover, .dn-resizer.active { background: var(--dn-hover); }
.dn-resizer::after { content: ''; width: 2px; height: 40px; background: var(--dn-border); border-radius: 1px; }

/* ===== TOKEN COUNTER ===== */
.dn-token-counter {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: var(--dn-text-dim);
  padding: 2px 8px; display: flex; justify-content: center; flex-shrink: 0;
}

/* ===== TOAST ===== */
.dn-toast {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--dn-modal-bg); color: var(--dn-text); padding: 8px 18px;
  border-radius: 8px; font-size: 12px; z-index: 200; opacity: 0;
  transition: opacity .3s; pointer-events: none; border: 1px solid var(--dn-border);
}
.dn-toast.show { opacity: 1; }

/* ===== WELCOME MESSAGE ===== */
.dn-welcome-msg {
  padding: 10px 14px; border-radius: 14px; border-bottom-left-radius: 4px;
  background: var(--dn-ai-bubble); color: var(--dn-text); line-height: 1.6;
  font-size: var(--dn-font-size); align-self: flex-start; max-width: 90%;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 700px) {
  .dn-panels { flex-direction: column; }
  .dn-history-sidebar { width: 260px; }
  .dn-topbar-title { display: none; }
  .dn-resizer { display: none !important; }
  .dn-nav-panel { width: 95%; }
}

/* Web Search Toggle */
.dn-btn-web-search{background:none;border:1px solid var(--dn-border);color:var(--dn-text-dim);border-radius:6px;padding:4px 6px;cursor:pointer;transition:all .2s;}
.dn-btn-web-search:hover{border-color:var(--dn-accent);color:var(--dn-accent);}
.dn-btn-web-search.active{background:var(--dn-accent);color:#fff;border-color:var(--dn-accent);}

/* Stream thinking indicator */
.dn-stream-thinking{color:var(--dn-text-dim);font-style:italic;animation:dn-pulse 1.5s ease-in-out infinite;}
@keyframes dn-pulse{0%,100%{opacity:.4}50%{opacity:1}}