*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0a0000;
  --surface:    #110000;
  --surface2:   #1a0000;
  --border:     #3a0000;
  --accent:     #cc0000;
  --accent-dim: #6b0000;
  --text:       #f0e0e0;
  --text-muted: #8a5555;
  --green:      #cc0000;
  --red:        #ff4444;
  --font-mono:  'JetBrains Mono', monospace;
  --font-ui:    'Inter', sans-serif;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--font-ui); font-size: 15px; line-height: 1.6; }
body { display: flex; overflow: hidden; }

/* ── Nuages Akatsuki en fond ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    radial-gradient(ellipse 120px 80px at 10% 20%, rgba(180,0,0,0.15) 0%, transparent 70%),
    radial-gradient(ellipse 160px 100px at 85% 15%, rgba(180,0,0,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 100px 70px at 50% 35%, rgba(180,0,0,0.1) 0%, transparent 70%),
    radial-gradient(ellipse 140px 90px at 20% 65%, rgba(180,0,0,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 180px 110px at 75% 70%, rgba(180,0,0,0.15) 0%, transparent 70%),
    radial-gradient(ellipse 120px 75px at 40% 85%, rgba(180,0,0,0.1) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Nuage SVG Akatsuki en watermark */
body::after {
  content: '';
  position: fixed;
  bottom: -80px;
  right: -80px;
  width: 500px;
  height: 500px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Ccircle cx='100' cy='100' r='90' fill='none' stroke='rgba(180,0,0,0.08)' stroke-width='3'/%3E%3Ccircle cx='100' cy='100' r='70' fill='none' stroke='rgba(180,0,0,0.06)' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.sidebar, .main { position: relative; z-index: 1; }

/* ── Sidebar ── */
.sidebar {
  width: 240px; min-width: 240px;
  background: rgba(17,0,0,0.95);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 16px 12px; gap: 8px;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.sidebar-header { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; padding: 0 4px; }
.logo { font-size: 20px; color: var(--accent); filter: drop-shadow(0 0 6px rgba(200,0,0,0.6)); }
.logo-img { width: 28px; height: 28px; object-fit: contain; border-radius: 50%; border: 1px solid var(--accent); filter: drop-shadow(0 0 4px rgba(200,0,0,0.5)); }
.logo-text { font-weight: 600; font-size: 15px; letter-spacing: 0.05em; color: var(--text); text-shadow: 0 0 10px rgba(200,0,0,0.4); }

/* Search */
.search-wrap { position: relative; }
#searchInput {
  width: 100%; background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-family: var(--font-ui);
  font-size: 13px; padding: 8px 10px; outline: none;
}
#searchInput:focus { border-color: var(--accent); box-shadow: 0 0 8px rgba(200,0,0,0.3); }
#searchInput::placeholder { color: var(--text-muted); }

.search-dropdown {
  display: none; position: absolute; top: calc(100% + 4px); left: 0; right: 0;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; z-index: 100; overflow: hidden;
  box-shadow: 0 8px 24px rgba(200,0,0,0.2);
}
.search-dropdown.open { display: block; }
.search-item { padding: 10px 12px; cursor: pointer; border-bottom: 1px solid var(--border); }
.search-item:last-child { border-bottom: none; }
.search-item:hover { background: var(--accent-dim); }
.search-conv { font-size: 12px; color: var(--accent); font-weight: 500; margin-bottom: 2px; }
.search-snippet { font-size: 12px; color: var(--text-muted); }
.search-empty { padding: 12px; font-size: 13px; color: var(--text-muted); text-align: center; }

/* New chat */
.new-chat-btn {
  background: var(--accent-dim); color: var(--text);
  border: 1px solid var(--accent); border-radius: 8px;
  padding: 8px 12px; font-family: var(--font-ui); font-size: 13px;
  cursor: pointer; transition: all 0.15s; text-align: left;
  box-shadow: 0 0 8px rgba(200,0,0,0.2);
}
.new-chat-btn:hover { background: var(--accent); box-shadow: 0 0 14px rgba(200,0,0,0.5); }

/* Section headers */
.sidebar-section {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-muted); padding: 4px 4px 0; margin-top: 6px;
}
.icon-btn {
  background: none; border: 1px solid var(--border); color: var(--text-muted);
  border-radius: 4px; width: 20px; height: 20px; cursor: pointer;
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  transition: all 0.15s;
}
.icon-btn:hover { background: var(--accent-dim); border-color: var(--accent); color: var(--text); }

/* Lists */
.sidebar-list { list-style: none; overflow-y: auto; }
.conv-list { flex: 1; }

.project-item, .conv-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 8px; border-radius: 6px; cursor: pointer;
  font-size: 13px; color: var(--text-muted);
  transition: all 0.12s; gap: 6px;
}
.project-item:hover, .conv-item:hover { background: var(--surface2); color: var(--text); }
.project-item.active, .conv-item.active { background: var(--accent-dim); color: var(--text); border-left: 2px solid var(--accent); }

.project-name, .conv-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.delete-btn {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 11px; padding: 2px 4px;
  border-radius: 4px; opacity: 0; transition: opacity 0.15s, color 0.15s; flex-shrink: 0;
}
.project-item:hover .delete-btn, .conv-item:hover .delete-btn { opacity: 1; }
.delete-btn:hover { color: var(--red); }
.conv-empty { font-size: 12px; color: var(--text-muted); padding: 8px; text-align: center; }

/* Footer */
.sidebar-footer {
  margin-top: auto; display: flex; align-items: center;
  gap: 8px; font-size: 12px; color: var(--text-muted); padding: 4px;
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.status-dot.online  { background: var(--accent); box-shadow: 0 0 6px rgba(200,0,0,0.8); }
.status-dot.offline { background: #555; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

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

.chat-header {
  padding: 14px 32px; border-bottom: 1px solid var(--border);
  font-size: 14px; font-weight: 500; color: var(--text-muted);
  background: rgba(17,0,0,0.9); min-height: 48px; display: flex; align-items: center;
  backdrop-filter: blur(10px);
}

.messages { flex: 1; overflow-y: auto; padding: 24px 0; scroll-behavior: smooth; }
.messages::-webkit-scrollbar { width: 6px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.welcome { text-align: center; padding: 80px 40px; color: var(--text-muted); }
.welcome h1 {
  font-size: 48px; font-weight: 700; letter-spacing: -1px; margin-bottom: 12px;
  background: linear-gradient(135deg, #ff4444, #cc0000, #880000);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 20px rgba(200,0,0,0.4));
}
.welcome p { font-size: 15px; line-height: 1.7; }

/* ── Messages ── */
.message { display: flex; gap: 14px; padding: 12px 32px; max-width: 860px; margin: 0 auto; width: 100%; }
.message.user  { flex-direction: row-reverse; }
.message.agent { flex-direction: row; }

.avatar {
  width: 32px; height: 32px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0; margin-top: 2px;
  border: 1px solid var(--border);
}
.message.user  .avatar { background: var(--accent-dim); border-color: var(--accent); box-shadow: 0 0 8px rgba(200,0,0,0.3); }
.message.agent .avatar { background: var(--surface2); }

.bubble {
  max-width: 75%; border-radius: 12px; padding: 12px 16px;
  font-size: 14.5px; line-height: 1.65;
}
.message.user  .bubble { background: var(--surface2); border: 1px solid var(--accent-dim); border-top-right-radius: 3px; }
.message.agent .bubble { background: rgba(17,0,0,0.8); border: 1px solid var(--border); border-top-left-radius: 3px; backdrop-filter: blur(5px); }

.bubble p { margin-bottom: 8px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble ul, .bubble ol { padding-left: 20px; margin-bottom: 8px; }
.bubble li { margin-bottom: 3px; }
.bubble code { font-family: var(--font-mono); font-size: 13px; background: #1a0000; padding: 2px 6px; border-radius: 4px; color: #ff6666; border: 1px solid #3a0000; }
.bubble pre { background: #0d0000; border: 1px solid var(--border); border-radius: 8px; padding: 14px; overflow-x: auto; margin: 10px 0; }
.bubble pre code { background: none; padding: 0; color: inherit; font-size: 13px; border: none; }
.bubble strong { color: var(--accent); font-weight: 600; }
.bubble h1, .bubble h2, .bubble h3 { color: var(--accent); margin: 12px 0 6px; }

.typing-indicator { display: flex; gap: 5px; align-items: center; padding: 4px 0; }
.typing-indicator span { width: 7px; height: 7px; background: var(--accent); border-radius: 50%; animation: bounce 1.2s infinite; box-shadow: 0 0 4px rgba(200,0,0,0.6); }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce { 0%, 60%, 100% { transform: translateY(0); } 30% { transform: translateY(-6px); } }

/* ── Input ── */
.input-bar {
  display: flex; align-items: flex-end; gap: 10px;
  padding: 16px 32px 24px; max-width: 860px; margin: 0 auto; width: 100%;
}
textarea {
  flex: 1; background: rgba(17,0,0,0.9); border: 1px solid var(--border);
  border-radius: 12px; color: var(--text); font-family: var(--font-ui);
  font-size: 14.5px; line-height: 1.5; padding: 12px 16px;
  resize: none; outline: none; max-height: 180px; overflow-y: auto;
  transition: border-color 0.15s, box-shadow 0.15s;
  backdrop-filter: blur(5px);
}
textarea:focus { border-color: var(--accent); box-shadow: 0 0 12px rgba(200,0,0,0.25); }
textarea::placeholder { color: var(--text-muted); }
#sendBtn {
  width: 42px; height: 42px; border-radius: 10px; background: var(--accent);
  border: none; color: white; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: all 0.15s;
  box-shadow: 0 0 12px rgba(200,0,0,0.4);
}
#sendBtn:hover  { background: #ff0000; box-shadow: 0 0 20px rgba(200,0,0,0.7); transform: scale(1.05); }
#sendBtn:active { transform: scale(0.95); }
#sendBtn:disabled { background: var(--border); cursor: not-allowed; box-shadow: none; }

@media (max-width: 640px) {
  .sidebar { display: none; }
  .message { padding: 12px 16px; }
  .input-bar { padding: 12px 16px 20px; }
  .bubble { max-width: 90%; }
}

#bgCanvas {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
.sidebar, .main { position: relative; z-index: 1; }