:root {
  --bg: #111111;
  --surface: #191919;
  --surface2: #202020;
  --border: #2a2a2a;
  --border2: #323232;
  --border3: #444444;
  --text: #f0f0f0;
  --text2: #999999;
  --text3: #606060;
  --red: #d95f5f;
  --red-dim: rgba(217,95,95,.1);
  --amber: #d4a84b;
  --green: #7ecf9e;
  --blue: #809fff;
  --font: 'Geist', sans-serif;
  --mono: 'Geist Mono', monospace;
  --card-bg-a: rgba(28,28,28,0.90);
  --card-bg-b: rgba(16,16,16,0.96);
  --card-edge: rgba(255,255,255,0.07);
  --card-edge-top: rgba(255,255,255,0.13);
  --card-shadow: 0 16px 40px rgba(0,0,0,.50);
  --radius: 20px;
  --sidebar-w: 240px;
}

*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html,body { height:100%; overflow:hidden; background:#111111; color:var(--text); font-family:var(--font); -webkit-font-smoothing:antialiased; font-size:14px; }
::-webkit-scrollbar { width:3px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:2px; }

body::before {
  content:'';
  position:fixed;
  inset:0;
  background:
    radial-gradient(ellipse 70% 50% at 15% 10%, rgba(255,255,255,0.025), transparent 55%),
    radial-gradient(ellipse 50% 40% at 85% 90%, rgba(0,0,0,0.25), transparent 55%);
  pointer-events:none;
  z-index:0;
}

/* ── LAYOUT ── */
.layout { display:flex; height:100vh; overflow:hidden; position:relative; z-index:1; }

/* ── SIDEBAR ── */
.sidebar {
  width:var(--sidebar-w);
  min-width:var(--sidebar-w);
  background:linear-gradient(160deg, rgba(22,22,22,0.97) 0%, rgba(14,14,14,0.99) 100%);
  border-right:1px solid var(--card-edge);
  display:flex;
  flex-direction:column;
  padding:16px 12px;
  gap:6px;
  transition:transform 0.25s cubic-bezier(.25,1,.5,1), min-width 0.25s, width 0.25s;
  overflow:hidden;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
}
.sidebar.hidden { transform:translateX(-100%); width:0; min-width:0; padding:0; }

.sidebar-top { display:flex; flex-direction:column; gap:10px; margin-bottom:4px; }

.logo { font-family:var(--mono); font-size:14px; font-weight:500; letter-spacing:-.02em; padding:4px 4px 2px; display:flex; align-items:center; gap:2px; }
.logo-helm { color:var(--text); }
.logo-slash { color:var(--border3); margin:0 1px; }
.logo-ai { color:var(--blue); }

.new-chat-btn {
  background:linear-gradient(160deg, rgba(28,28,28,0.88), rgba(16,16,16,0.95));
  border:1px solid var(--card-edge);
  border-top-color:var(--card-edge-top);
  color:var(--text2);
  border-radius:12px;
  padding:8px 12px;
  font-size:12px;
  font-family:var(--font);
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:6px;
  transition:background .2s, color .2s, border-color .2s;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.04), 0 4px 14px rgba(0,0,0,.35);
}
.new-chat-btn:hover { background:linear-gradient(160deg, rgba(36,36,36,0.92), rgba(22,22,22,0.98)); color:var(--text); border-color:rgba(255,255,255,0.12); }

.sidebar-section-label { font-size:9px; font-family:var(--mono); letter-spacing:.08em; color:var(--text3); text-transform:uppercase; padding:8px 4px 3px; }

.ctx-loading, .ctx-empty { font-size:12px; color:var(--text3); padding:4px 4px; font-family:var(--mono); }

/* ── CHAT LIST ── */
.chat-list { display:flex; flex-direction:column; gap:1px; flex:1; overflow-y:auto; min-height:0; }

.chat-item {
  display:flex;
  align-items:center;
  gap:8px;
  padding:7px 8px;
  border-radius:10px;
  cursor:pointer;
  font-size:12px;
  color:var(--text2);
  transition:background .15s, color .15s;
  white-space:nowrap;
  overflow:hidden;
  position:relative;
  flex-shrink:0;
}
.chat-item:hover { background:rgba(255,255,255,.05); color:var(--text); }
.chat-item:hover .chat-item-actions { opacity:1; }
.chat-item.active { background:rgba(255,255,255,.06); color:var(--text); }
.chat-item i.fa-message { color:var(--text3); font-size:10px; flex-shrink:0; }
.chat-item-title { flex:1; overflow:hidden; text-overflow:ellipsis; }
.chat-item-actions { opacity:0; display:flex; align-items:center; gap:2px; transition:opacity .15s; flex-shrink:0; }
.chat-act-btn {
  width:20px; height:20px;
  border-radius:5px;
  border:none;
  background:transparent;
  color:var(--text3);
  font-size:9px;
  cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:background .15s, color .15s;
}
.chat-act-btn:hover { background:rgba(255,255,255,.08); color:var(--text); }
.chat-act-btn.del:hover { background:rgba(217,95,95,.15); color:var(--red); }

.chat-rename-input {
  flex:1;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:6px;
  color:var(--text);
  font-family:var(--font);
  font-size:12px;
  padding:2px 6px;
  outline:none;
}

/* ── CONTEXT PANEL ── */
.ctx-panel {
  border-top:1px solid var(--card-edge);
  padding-top:8px;
  flex-shrink:0;
}
.ctx-panel-toggle {
  display:flex;
  align-items:center;
  justify-content:space-between;
  cursor:pointer;
  padding:4px 4px;
  border-radius:8px;
  transition:background .15s;
}
.ctx-panel-toggle:hover { background:rgba(255,255,255,.04); }
.ctx-panel-toggle span { font-size:9px; font-family:var(--mono); letter-spacing:.08em; color:var(--text3); text-transform:uppercase; }
.ctx-panel-toggle i { font-size:9px; color:var(--text3); transition:transform .2s; }
.ctx-panel.open .ctx-panel-toggle i { transform:rotate(180deg); }
.ctx-panel-body { display:none; padding-top:6px; }
.ctx-panel.open .ctx-panel-body { display:block; }

.ctx-file {
  display:flex;
  gap:8px;
  align-items:flex-start;
  padding:7px 6px;
  border-radius:8px;
  transition:background .1s;
}
.ctx-file:hover { background:rgba(255,255,255,.04); }
.ctx-file i { color:var(--text3); font-size:10px; margin-top:2px; flex-shrink:0; }
.ctx-fname { font-size:11px; color:var(--text2); font-family:var(--mono); }
.ctx-preview { font-size:10px; color:var(--text3); margin-top:2px; line-height:1.4; overflow:hidden; display:-webkit-box; -webkit-box-orient:vertical; }

/* ── MAIN ── */
.main { flex:1; display:flex; flex-direction:column; overflow:hidden; position:relative; }

/* ── TOPBAR ── */
.topbar {
  display:flex;
  align-items:center;
  padding:10px 16px;
  border-bottom:1px solid var(--card-edge);
  gap:10px;
  flex-shrink:0;
  background:linear-gradient(180deg, rgba(18,18,18,0.95), rgba(14,14,14,0.85));
  backdrop-filter:blur(14px);
}
.sidebar-toggle { background:none; border:none; color:var(--text3); cursor:pointer; font-size:13px; padding:5px; border-radius:7px; transition:color .15s, background .15s; }
.sidebar-toggle:hover { color:var(--text); background:rgba(255,255,255,.05); }
.topbar-mid { flex:1; display:flex; justify-content:center; }
.model-pill {
  font-family:var(--mono);
  font-size:10px;
  color:var(--text3);
  background:rgba(255,255,255,.04);
  border:1px solid var(--card-edge);
  padding:3px 10px;
  border-radius:20px;
  cursor:default;
  transition:color .2s;
}
.model-pill:hover { color:var(--text2); }
.topbar-right { display:flex; align-items:center; }
.status-dot { width:6px; height:6px; border-radius:50%; background:var(--text3); transition:background .3s; }
.status-dot.online { background:var(--green); }
.status-dot.thinking { background:var(--amber); animation:pulse 1s infinite; }
.status-dot.error { background:var(--red); }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

/* ── EMPTY STATE ── */
.empty-state { flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; padding:40px 20px; }
.empty-icon { font-size:32px; color:var(--text3); margin-bottom:4px; }
.empty-title { font-size:20px; font-weight:700; letter-spacing:-.03em; color:var(--text); }
.empty-sub { font-size:12px; color:var(--text3); font-family:var(--mono); }
.empty-suggestions { display:flex; gap:8px; flex-wrap:wrap; justify-content:center; margin-top:14px; }
.suggestion-chip {
  background:linear-gradient(160deg, rgba(28,28,28,0.88), rgba(16,16,16,0.95));
  border:1px solid var(--card-edge);
  border-top-color:var(--card-edge-top);
  color:var(--text2);
  font-size:12px;
  padding:7px 14px;
  border-radius:20px;
  cursor:pointer;
  font-family:var(--font);
  transition:background .15s, color .15s, border-color .15s;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.suggestion-chip:hover { background:rgba(36,36,36,0.95); color:var(--text); border-color:rgba(255,255,255,.12); }

/* ── MESSAGES ── */
.messages { flex:1; overflow-y:auto; padding:24px 0 8px; display:flex; flex-direction:column; gap:2px; scroll-behavior:smooth; }

.msg { padding:6px 24px; max-width:100%; opacity:0; transform:translateY(8px); animation:msgIn .22s cubic-bezier(.25,1,.5,1) forwards; }
@keyframes msgIn { to { opacity:1; transform:translateY(0); } }

.msg-user { align-self:flex-end; max-width:68%; }
.msg-user .msg-content {
  background:linear-gradient(160deg, rgba(30,30,30,0.92), rgba(18,18,18,0.97));
  border:1px solid var(--card-edge);
  border-top-color:var(--card-edge-top);
  border-radius:16px 16px 4px 16px;
  padding:10px 14px;
  color:var(--text);
  line-height:1.6;
  white-space:pre-wrap;
  word-break:break-word;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05), 0 4px 16px rgba(0,0,0,.35);
  font-size:14px;
  position:relative;
}
.msg-user .msg-actions { display:flex; justify-content:flex-end; gap:4px; margin-top:4px; opacity:0; transition:opacity .15s; }
.msg-user:hover .msg-actions { opacity:1; }

.msg-ai { align-self:flex-start; width:100%; max-width:100%; }
.msg-header { display:flex; align-items:center; gap:8px; margin-bottom:5px; padding:0 2px; }
.msg-role-label { font-family:var(--mono); font-size:10px; color:var(--blue); letter-spacing:.05em; }
.msg-model { font-family:var(--mono); font-size:10px; color:transparent; transition:color .2s; }
.msg-ai:hover .msg-model { color:var(--text3); }
.msg-ai .msg-content { color:var(--text); line-height:1.7; word-break:break-word; font-size:14px; }
.msg-ai .msg-actions { display:flex; gap:4px; margin-top:8px; opacity:0; transition:opacity .15s; }
.msg-ai:hover .msg-actions { opacity:1; }

.msg-act-btn {
  display:flex; align-items:center; gap:4px;
  padding:4px 8px; border-radius:7px;
  border:1px solid var(--card-edge);
  background:rgba(255,255,255,.03);
  color:var(--text3);
  font-size:10px; font-family:var(--mono);
  cursor:pointer;
  transition:background .15s, color .15s, border-color .15s;
}
.msg-act-btn:hover { background:rgba(255,255,255,.07); color:var(--text2); border-color:rgba(255,255,255,.12); }
.msg-act-btn.del:hover { background:rgba(217,95,95,.12); color:var(--red); border-color:rgba(217,95,95,.2); }

.msg-edit-wrap { display:flex; flex-direction:column; gap:6px; }
.msg-edit-ta {
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  border-radius:10px;
  color:var(--text);
  font-family:var(--font);
  font-size:14px;
  padding:10px 12px;
  outline:none;
  resize:none;
  line-height:1.55;
}
.msg-edit-ta:focus { border-color:rgba(255,255,255,.22); }
.msg-edit-actions { display:flex; gap:6px; }
.msg-edit-save, .msg-edit-cancel {
  padding:5px 12px; border-radius:8px; font-size:12px; font-family:var(--font); cursor:pointer; border:none;
}
.msg-edit-save { background:var(--blue); color:#111; font-weight:600; }
.msg-edit-cancel { background:rgba(255,255,255,.06); color:var(--text2); border:1px solid var(--card-edge); }

/* ── CODE BLOCKS ── */
.msg-ai .msg-content pre {
  background:linear-gradient(160deg, rgba(22,22,22,0.95), rgba(12,12,12,0.98));
  border:1px solid var(--card-edge);
  border-top-color:var(--card-edge-top);
  border-radius:12px;
  padding:14px 16px;
  overflow-x:auto;
  margin:10px 0;
  font-family:var(--mono);
  font-size:12px;
  line-height:1.6;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.msg-ai .msg-content code { font-family:var(--mono); font-size:12px; background:rgba(255,255,255,.06); border:1px solid var(--card-edge); padding:1px 5px; border-radius:4px; }
.msg-ai .msg-content pre code { background:none; border:none; padding:0; }
.msg-ai .msg-content strong { color:var(--text); font-weight:600; }
.msg-ai .msg-content .md-heading { font-size:15px; font-weight:700; letter-spacing:-.02em; color:var(--text); margin:16px 0 6px; }

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }
.cursor-blink { animation:blink 1s infinite; color:var(--blue); }

/* ── INPUT ── */
.input-area {
  padding:10px 16px 14px;
  border-top:1px solid var(--card-edge);
  flex-shrink:0;
  background:linear-gradient(0deg, rgba(14,14,14,0.95), rgba(18,18,18,0.80));
  backdrop-filter:blur(14px);
}
.input-wrap {
  display:flex;
  align-items:flex-end;
  gap:8px;
  background:linear-gradient(160deg, rgba(28,28,28,0.88), rgba(16,16,16,0.95));
  border:1px solid var(--card-edge);
  border-top-color:var(--card-edge-top);
  border-radius:14px;
  padding:8px 10px;
  transition:border-color .15s;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04), 0 4px 16px rgba(0,0,0,.35);
}
.input-wrap:focus-within { border-color:rgba(255,255,255,.14); }
.prompt-input { flex:1; background:none; border:none; outline:none; color:var(--text); font-family:var(--font); font-size:14px; resize:none; max-height:200px; line-height:1.55; padding:2px 0; }
.prompt-input::placeholder { color:var(--text3); }
.send-btn {
  background:linear-gradient(160deg, rgba(128,159,255,.9), rgba(100,130,240,.85));
  border:none; color:#fff;
  width:30px; height:30px;
  border-radius:8px;
  cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  font-size:12px; flex-shrink:0;
  transition:opacity .15s, transform .15s;
  box-shadow:0 2px 10px rgba(128,159,255,.3);
}
.send-btn:hover { opacity:.9; transform:scale(1.05); }
.send-btn:disabled { opacity:.3; cursor:not-allowed; transform:none; }

.input-meta { display:flex; gap:12px; padding:5px 2px 0; font-family:var(--mono); font-size:10px; color:var(--text3); }

/* ── MOBILE ── */
@media (max-width:600px) {
  .sidebar { position:absolute; left:0; top:0; bottom:0; z-index:100; }
  .msg-user { max-width:88%; }
  .msg { padding:6px 14px; }
  body::before { display:none !important; }
  * { backdrop-filter:none !important; -webkit-backdrop-filter:none !important; }
}

/* ── CODE BLOCKS ── */
.code-block { margin: 10px 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--card-edge); border-top-color: var(--card-edge-top); }
.code-header { display:flex; align-items:center; justify-content:space-between; padding:7px 12px; background:rgba(255,255,255,.04); border-bottom:1px solid var(--card-edge); }
.code-lang { font-family:var(--mono); font-size:10px; color:var(--text3); text-transform:lowercase; }
.code-copy-btn { background:none; border:none; color:var(--text3); cursor:pointer; font-size:11px; padding:2px 4px; border-radius:4px; transition:color .15s, background .15s; }
.code-copy-btn:hover { color:var(--text2); background:rgba(255,255,255,.06); }
.code-block pre { margin:0; padding:14px 16px; background:linear-gradient(160deg,rgba(16,16,16,.98),rgba(10,10,10,.99)); }
.code-block pre code { background:none; border:none; padding:0; }

/* ── UPLOAD ── */
.upload-btn { background:none; border:none; color:var(--text3); cursor:pointer; font-size:13px; padding:5px; border-radius:7px; transition:color .15s, background .15s; flex-shrink:0; }
.upload-btn:hover { color:var(--text2); background:rgba(255,255,255,.05); }
.upload-preview { display:flex; align-items:center; gap:10px; padding:8px 10px; margin-bottom:6px; background:rgba(255,255,255,.03); border:1px solid var(--card-edge); border-radius:10px; }
.upload-preview-inner { display:flex; align-items:center; gap:8px; flex:1; }
.upload-fname { font-size:11px; font-family:var(--mono); color:var(--text2); }
.upload-clear { background:none; border:none; color:var(--text3); cursor:pointer; font-size:12px; padding:4px; border-radius:5px; transition:color .15s; flex-shrink:0; }
.upload-clear:hover { color:var(--red); }

/* ── SHORT MSG PADDING FIX ── */
.msg-user .msg-content { display:inline-block; }
.msg-user { display:flex; flex-direction:column; align-items:flex-end; }

/* ── TOOLBAR ── */
.input-toolbar { display:flex; align-items:center; gap:2px; padding-bottom:4px; border-bottom:1px solid var(--card-edge); margin-bottom:6px; }
.tool-btn { background:none; border:none; color:var(--text3); cursor:pointer; font-size:12px; padding:5px 7px; border-radius:7px; transition:color .15s, background .15s; }
.tool-btn:hover { color:var(--text2); background:rgba(255,255,255,.06); }
.tool-btn.active { color:var(--blue); background:rgba(128,159,255,.1); }

/* ── STOP BTN ── */
.stop-btn {
  background:rgba(217,95,95,.15); border:1px solid rgba(217,95,95,.25);
  color:var(--red); width:30px; height:30px; border-radius:8px;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  font-size:11px; flex-shrink:0; transition:background .15s;
}
.stop-btn:hover { background:rgba(217,95,95,.25); }

/* ── THINK BLOCK ── */
.think-block { margin-bottom:10px; border:1px solid var(--card-edge); border-radius:12px; overflow:hidden; }
.think-header {
  width:100%; background:rgba(255,255,255,.03); border:none;
  display:flex; align-items:center; gap:8px;
  padding:8px 12px; cursor:pointer; color:var(--text2);
  font-family:var(--mono); font-size:11px; text-align:left;
  transition:background .15s;
}
.think-header:hover { background:rgba(255,255,255,.06); }
.think-header.done { color:var(--text3); }
.think-spinner {
  width:8px; height:8px; border-radius:50%;
  border:1.5px solid var(--amber); border-top-color:transparent;
  animation:spin .7s linear infinite; flex-shrink:0;
}
.think-spinner.done { border:1.5px solid var(--green); border-top-color:var(--green); animation:none; }
@keyframes spin { to { transform:rotate(360deg); } }
.think-label { flex:1; }
.think-chevron { font-size:9px; color:var(--text3); transition:transform .2s; }
.think-body { padding:10px 14px; background:rgba(255,255,255,.01); max-height:300px; overflow-y:auto; }
.think-content { font-size:12px; color:var(--text3); line-height:1.6; font-family:var(--mono); white-space:pre-wrap; }

/* ── LOCATION LABEL ── */
.location-label { font-family:var(--mono); font-size:10px; color:var(--text3); margin-right:8px; }

/* ── META MODE ── */
#meta-mode { color:var(--blue); font-size:10px; }

/* ── MD LIST ITEMS ── */
.msg-ai .msg-content .md-li { padding-left:14px; position:relative; }
.msg-ai .msg-content .md-li::before { content:'·'; position:absolute; left:4px; color:var(--text3); }

/* ── REGEN BTN ── */
.regen-btn:hover { background:rgba(128,159,255,.1); color:var(--blue); border-color:rgba(128,159,255,.2); }

/* ── ICON BTN ── */
.icon-btn { background:none; border:none; color:var(--text3); cursor:pointer; font-size:13px; padding:5px; border-radius:7px; transition:color .15s, background .15s; }
.icon-btn:hover { color:var(--text); background:rgba(255,255,255,.05); }
.icon-btn.small { font-size:11px; padding:3px; }

/* ── INPUT WRAP TIGHTENED ── */
.input-wrap { flex-direction:column; padding:10px 12px; }
.input-wrap > .prompt-input { padding:0; }
.input-wrap .send-btn, .input-wrap .stop-btn { position:absolute; right:12px; bottom:10px; }
.input-wrap { position:relative; }