:root {
  --bg: #0e1116;
  --bg-soft: #131822;
  --panel: #161c27;
  --panel-2: #1b2331;
  --border: #242e3e;
  --text: #e7ecf3;
  --text-2: #9aa7b8;
  --text-3: #64748b;
  --accent: #4f8cff;
  --accent-2: #22d3ee;
  --green: #34d399;
  --red: #f87171;
  --amber: #fbbf24;
  --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

.app { display: flex; height: 100vh; }

/* Sidebar */
.sidebar {
  width: 232px; flex-shrink: 0;
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 20px 14px;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 6px 22px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px; color: #fff;
}
.brand-name { font-weight: 600; font-size: 15px; }
.brand-sub { font-size: 11px; color: var(--text-3); margin-top: 2px; }

nav { display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 11px 14px; border: none; border-radius: 9px;
  background: transparent; color: var(--text-2); font-size: 14px; cursor: pointer;
  text-align: left; transition: all .15s;
}
.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item.active { background: var(--panel-2); color: #fff; font-weight: 600; box-shadow: inset 2px 0 0 var(--accent); }
.badge {
  background: var(--red); color: #fff; font-size: 11px; border-radius: 99px;
  padding: 1px 7px; font-weight: 600;
}
.hidden { display: none !important; }

.sidebar-foot { margin-top: auto; padding: 14px 6px 0; border-top: 1px solid var(--border); }
.mode-chip {
  display: inline-block; padding: 3px 10px; border-radius: 99px; font-size: 12px;
  background: var(--panel-2); color: var(--accent-2); border: 1px solid var(--border);
}
.mode-chip.mock { color: var(--amber); }
.mode-chip.real { color: var(--green); }
.sync-info { margin-top: 8px; font-size: 12px; color: var(--text-3); }

/* Main */
.main { flex: 1; overflow-y: auto; padding: 28px 32px; }
.view { display: none; }
.view.active { display: block; }
.view-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 20px; }
.view-head h1 { font-size: 22px; font-weight: 700; }
.sub { color: var(--text-3); margin-top: 4px; font-size: 13px; }

/* Panels & cards */
.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; margin-bottom: 18px;
}
.panel-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.panel-head h2 { font-size: 15px; font-weight: 600; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.chart { width: 100%; height: 300px; }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.kpi-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px;
}
.kpi-label { font-size: 12px; color: var(--text-3); }
.kpi-value { font-size: 24px; font-weight: 700; margin-top: 6px; font-variant-numeric: tabular-nums; }
.kpi-value .unit { font-size: 13px; color: var(--text-3); font-weight: 400; margin-left: 2px; }
.kpi-delta { font-size: 12px; margin-top: 6px; }
.delta-up { color: var(--red); }
.delta-down { color: var(--green); }
.delta-flat { color: var(--text-3); }

/* Buttons & inputs */
.btn {
  padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border);
  font-size: 13px; cursor: pointer; transition: all .15s;
}
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.1); }
.btn.ghost { background: transparent; color: var(--text-2); }
.btn.ghost:hover { background: var(--panel-2); color: var(--text); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; margin-top: 14px; }
.select {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 10px; font-size: 13px; outline: none;
}
.period-switch { display: flex; gap: 4px; background: var(--panel); border: 1px solid var(--border); border-radius: 9px; padding: 3px; }
.pbtn {
  border: none; background: transparent; color: var(--text-3); padding: 6px 14px;
  border-radius: 7px; cursor: pointer; font-size: 13px;
}
.pbtn.active { background: var(--panel-2); color: #fff; }

/* Table */
.table { width: 100%; border-collapse: collapse; }
.table th {
  text-align: left; font-size: 12px; color: var(--text-3); font-weight: 500;
  padding: 8px 10px; border-bottom: 1px solid var(--border);
}
.table td { padding: 10px; border-bottom: 1px solid #1d2533; font-variant-numeric: tabular-nums; }
.table tr:last-child td { border-bottom: none; }
.table .num { text-align: right; }
.table .dim-name { font-weight: 500; }
.chip {
  display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 11px;
}
.chip.good { background: rgba(52,211,153,.12); color: var(--green); }
.chip.warn { background: rgba(251,191,36,.12); color: var(--amber); }
.chip.bad { background: rgba(248,113,113,.12); color: var(--red); }
.chip.info { background: rgba(79,140,255,.12); color: var(--accent); }

/* Alerts */
.alert-list { display: flex; flex-direction: column; gap: 10px; }
.alert-list.large { margin-bottom: 18px; }
.alert-card {
  background: var(--panel); border: 1px solid var(--border); border-left-width: 3px;
  border-radius: 10px; padding: 13px 15px;
}
.alert-card.danger { border-left-color: var(--red); }
.alert-card.warning { border-left-color: var(--amber); }
.alert-title { font-weight: 600; font-size: 14px; }
.alert-detail { color: var(--text-2); margin-top: 5px; font-size: 13px; line-height: 1.6; }
.alert-meta { color: var(--text-3); font-size: 11px; margin-top: 6px; }
.alert-empty { color: var(--text-3); text-align: center; padding: 24px 0; }

.suggestion-list { display: flex; flex-direction: column; gap: 10px; }
.suggestion-card {
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px;
  background: var(--panel-2);
}
.suggestion-action { font-weight: 600; color: var(--accent-2); font-size: 13px; }
.suggestion-target { font-weight: 600; }
.suggestion-reason { color: var(--text-2); margin-top: 5px; font-size: 13px; line-height: 1.6; }

/* Chat */
.chat-view { display: none; height: 100%; flex-direction: column; }
.chat-view.active { display: flex; }
.chat-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.chat-body {
  flex: 1; overflow-y: auto; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; min-height: 380px;
}
.chat-empty { color: var(--text-3); text-align: center; padding-top: 60px; }
.chat-empty-title { font-size: 15px; margin-bottom: 16px; }
.q-chip {
  display: inline-block; margin: 5px; padding: 8px 14px; border-radius: 99px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text-2);
  cursor: pointer; font-size: 13px;
}
.q-chip:hover { color: #fff; border-color: var(--accent); }
.msg { margin-bottom: 16px; display: flex; }
.msg.user { justify-content: flex-end; }
.msg-avatar {
  width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 13px;
}
.msg.user .msg-avatar { background: var(--accent); color: #fff; order: 2; margin-left: 10px; }
.msg.ai .msg-avatar { background: var(--panel-2); border: 1px solid var(--border); color: var(--accent-2); margin-right: 10px; }
.msg-bubble {
  max-width: 78%; padding: 11px 15px; border-radius: 12px; line-height: 1.7; font-size: 14px;
}
.msg.user .msg-bubble { background: var(--accent); color: #fff; border-top-right-radius: 3px; }
.msg.ai .msg-bubble { background: var(--panel-2); border: 1px solid var(--border); border-top-left-radius: 3px; }
.msg-bubble pre {
  background: #0b0e13; padding: 10px; border-radius: 8px; overflow-x: auto; margin: 8px 0;
}
.msg-bubble code { font-family: "SF Mono", Menlo, monospace; font-size: 12px; }
.msg-bubble ul, .msg-bubble ol { padding-left: 20px; margin: 6px 0; }
.msg-meta { font-size: 11px; color: var(--text-3); margin-top: 5px; }
.typing::after {
  content: "…"; animation: blink 1s infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.chat-input-wrap {
  display: flex; gap: 10px; align-items: flex-end;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px; margin-top: 12px;
}
.chat-input-wrap textarea {
  flex: 1; background: transparent; border: none; outline: none; color: var(--text);
  font-size: 14px; resize: none; font-family: inherit; padding: 6px 4px; max-height: 120px;
}

/* Setup */
.kv-list { display: flex; flex-direction: column; gap: 9px; margin-bottom: 14px; }
.kv { display: flex; justify-content: space-between; gap: 20px; font-size: 13px; }
.kv .k { color: var(--text-3); flex-shrink: 0; }
.kv .v { text-align: right; word-break: break-all; }
.kv .v.ok { color: var(--green); }
.kv .v.no { color: var(--red); }
.url-box {
  margin-top: 12px; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px; font-size: 12px; word-break: break-all;
  color: var(--accent-2);
}
.tip { color: var(--text-3); font-size: 12px; margin-top: 10px; }

/* Toast */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 11px 20px; border-radius: 10px; font-size: 13px; z-index: 99;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}

/* Login */
.login-overlay {
  position: fixed; inset: 0; background: rgba(8,10,14,.88); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center; z-index: 200;
}
.login-card {
  width: 320px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 30px 26px; text-align: center;
}
.login-title { font-size: 18px; font-weight: 700; }
.login-sub { color: var(--text-3); font-size: 13px; margin: 8px 0 18px; }
.login-card input {
  width: 100%; padding: 10px 12px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 14px; outline: none;
}
.login-btn { width: 100%; margin-top: 12px; }
.login-error { color: var(--red); font-size: 12px; margin-top: 10px; }

@media (max-width: 1100px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}