:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #1c2128;
  --text: #e1e4e8;
  --muted: #8b949e;
  --accent: #0088ff;
  --accent2: #00aaff;
  --border: #30363d;
  --success: #2ea043;
  --warning: #d29922;
  --danger: #f85149;
  --sidebar-w: 220px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent2); }

/* Sidebar */
.sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: var(--sidebar-w); background: var(--bg2); border-right: 1px solid var(--border); padding: 20px 0; display: flex; flex-direction: column; z-index: 50; }
.sidebar-brand { padding: 0 20px 20px; font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; border-bottom: 1px solid var(--border); }
.sidebar-user { padding: 16px 20px; font-size: 0.9rem; border-bottom: 1px solid var(--border); }
.sidebar-user small { color: var(--muted); }
.sidebar-nav { list-style: none; flex: 1; padding: 8px 0; }
.sidebar-nav li a { display: block; padding: 8px 20px; color: var(--muted); font-size: 0.9rem; transition: all 0.15s; }
.sidebar-nav li a:hover { color: var(--text); background: var(--bg3); }
.sidebar-nav li a.active { color: var(--accent); border-left: 2px solid var(--accent); }
.sidebar-logout { padding: 12px 20px; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--border); }

/* Content */
.content { margin-left: var(--sidebar-w); padding: 32px; min-height: 100vh; }

/* Cards */
.card { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 24px; margin-bottom: 16px; }
.card h3 { margin-bottom: 12px; font-size: 1rem; }

/* Stats grid */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 20px; }
.stat-card .stat-value { font-size: 2rem; font-weight: 700; letter-spacing: -0.03em; }
.stat-card .stat-label { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 4px; }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 16px; text-align: left; border-bottom: 1px solid var(--border); }
th { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
td { font-size: 0.9rem; }
tr:hover td { background: var(--bg3); }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 6px; }
input, select, textarea { width: 100%; padding: 10px 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-size: 0.9rem; font-family: inherit; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 80px; }

/* Buttons */
.btn { display: inline-block; padding: 8px 20px; border: none; border-radius: 6px; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: all 0.15s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 0.8rem; }

/* Alerts */
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 0.9rem; }
.alert-info { background: rgba(0,136,255,0.1); border: 1px solid rgba(0,136,255,0.3); }
.alert-success { background: rgba(46,160,67,0.1); border: 1px solid rgba(46,160,67,0.3); }
.alert-error { background: rgba(248,81,73,0.1); border: 1px solid rgba(248,81,73,0.3); color: var(--danger); }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; }
.badge-active { background: rgba(46,160,67,0.15); color: var(--success); }
.badge-resolved { background: rgba(139,148,158,0.15); color: var(--muted); }
.badge-escalated { background: rgba(210,153,34,0.15); color: var(--warning); }
.badge-voice { background: rgba(0,136,255,0.15); color: var(--accent); }
.badge-sms { background: rgba(46,160,67,0.15); color: var(--success); }
.badge-mcp { background: rgba(210,153,34,0.15); color: var(--warning); }

/* Page header */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.page-header h1 { font-size: 1.5rem; font-weight: 700; }

/* Chat widget */
#chat-toggle { position: fixed; bottom: 24px; right: 24px; width: 48px; height: 48px; background: var(--accent); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; cursor: pointer; z-index: 100; box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
#chat-panel { position: fixed; bottom: 84px; right: 24px; width: 380px; max-height: 500px; background: var(--bg2); border: 1px solid var(--border); border-radius: 12px; display: flex; flex-direction: column; z-index: 100; box-shadow: 0 8px 24px rgba(0,0,0,0.4); overflow: hidden; }
.chat-hidden { display: none !important; }
.chat-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 0.9rem; }
.chat-header button { background: none; border: none; color: var(--muted); font-size: 1.2rem; cursor: pointer; }
#chat-messages { flex: 1; overflow-y: auto; padding: 16px; max-height: 350px; }
#chat-messages .msg { margin-bottom: 12px; font-size: 0.85rem; line-height: 1.5; }
#chat-messages .msg-user { color: var(--accent); }
#chat-messages .msg-ai { color: var(--text); }
#chat-form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
#chat-form input { flex: 1; }
#chat-form button { flex-shrink: 0; background: var(--accent); color: #fff; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-weight: 600; }

/* Login page */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; margin-left: 0; }
.login-box { background: var(--bg2); border: 1px solid var(--border); border-radius: 12px; padding: 40px; width: 360px; }
.login-box h1 { font-size: 1.3rem; margin-bottom: 24px; text-align: center; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .content { margin-left: 0; }
  #chat-panel { width: calc(100vw - 32px); right: 16px; }
}