/* ============================================
   QuantBot - 量化交易平台 UI v4.0
   美学方向：深空科技 + 翡翠绿 accent + 玻璃态
   ============================================ */

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

:root {
  --bg: #070b14;
  --bg-grad-1: #0a1020;
  --bg-grad-2: #0d1426;
  --card: rgba(20, 28, 46, 0.65);
  --card-solid: #141c2e;
  --card-hover: rgba(30, 42, 66, 0.8);
  --primary: #00e6a8;
  --primary-dark: #00c490;
  --primary-glow: rgba(0, 230, 168, 0.35);
  --primary-subtle: rgba(0, 230, 168, 0.08);
  --red: #ff5c7a;
  --red-subtle: rgba(255, 92, 122, 0.12);
  --green: #2ed573;
  --green-subtle: rgba(46, 213, 115, 0.12);
  --yellow: #ffb347;
  --yellow-subtle: rgba(255, 179, 71, 0.12);
  --text: #eaf0fa;
  --text-secondary: #6b7a99;
  --text-dim: #4a5a7a;
  --border: rgba(50, 70, 110, 0.4);
  --border-bright: rgba(0, 230, 168, 0.2);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(0, 230, 168, 0.1);
}

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

body {
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* 全局背景氛围 */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 800px 600px at 10% -10%, rgba(0, 230, 168, 0.06), transparent),
    radial-gradient(ellipse 600px 400px at 90% 110%, rgba(100, 120, 255, 0.04), transparent),
    linear-gradient(180deg, var(--bg-grad-1), var(--bg-grad-2));
  z-index: -1;
  pointer-events: none;
}

/* ========== 登录/注册页 ========== */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  animation: fadeIn 0.6s ease;
}

.auth-card {
  background: var(--card);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 36px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.6;
}

.logo {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo span {
  background: linear-gradient(135deg, var(--primary), #00bfff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}

.tabs {
  display: flex;
  margin-bottom: 24px;
  background: rgba(10, 16, 32, 0.5);
  border-radius: 10px;
  padding: 4px;
  border: 1px solid var(--border);
}

.tab {
  flex: 1;
  text-align: center;
  padding: 10px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: 7px;
  transition: all 0.3s ease;
}

.tab.active {
  color: var(--primary);
  background: var(--primary-subtle);
  box-shadow: 0 0 12px rgba(0, 230, 168, 0.15);
}

.input {
  width: 100%;
  padding: 13px 16px;
  margin-bottom: 14px;
  background: rgba(10, 16, 32, 0.6);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.25s ease;
}

.input::placeholder { color: var(--text-dim); }

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
  background: rgba(10, 16, 32, 0.8);
}

.btn {
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #00231a;
  font-weight: 700;
  cursor: pointer;
  font-size: 15px;
  font-family: inherit;
  transition: all 0.25s ease;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn:hover::after { left: 100%; }

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--primary-glow);
}

.btn:active { transform: translateY(0); }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-danger {
  background: linear-gradient(135deg, var(--red), #e63956);
  color: #fff;
}
.btn-danger:hover { box-shadow: 0 8px 24px rgba(255, 92, 122, 0.35); }

.btn-success {
  background: linear-gradient(135deg, var(--green), #27c46b);
  color: #002814;
}
.btn-success:hover { box-shadow: 0 8px 24px rgba(46, 213, 115, 0.35); }

.btn-sm {
  padding: 7px 14px;
  font-size: 12px;
  width: auto;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 8px;
  font-weight: 500;
}
.btn-sm:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-subtle);
}

.error {
  color: var(--red);
  margin-top: 16px;
  font-size: 13px;
  text-align: center;
  padding: 10px;
  background: var(--red-subtle);
  border-radius: 8px;
  border: 1px solid rgba(255, 92, 122, 0.2);
}

/* ========== 主应用框架 ========== */
.app { display: block; animation: fadeIn 0.5s ease; }

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 32px;
  background: var(--card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header .logo {
  font-size: 22px;
  margin-bottom: 0;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-secondary);
  font-size: 13px;
}

.user-info #current-user {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-info #current-user::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary-glow);
}

.main {
  max-width: 1400px;
  margin: 32px auto;
  padding: 0 24px;
}

.card {
  background: var(--card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 20px;
  position: relative;
  transition: border-color 0.3s ease;
}

.card:hover { border-color: var(--border-bright); }

.card h2 {
  margin: 0 0 20px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.2px;
}

.card h2::before {
  content: '';
  display: inline-block;
  width: 3px; height: 18px;
  background: linear-gradient(180deg, var(--primary), transparent);
  border-radius: 2px;
}

label {
  display: block;
  margin: 16px 0 6px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
}

label input[type="checkbox"] {
  margin-right: 6px;
  accent-color: var(--primary);
  vertical-align: middle;
}

.status-text {
  margin-top: 16px;
  padding: 10px 14px;
  color: var(--text-secondary);
  font-size: 13px;
  background: rgba(10, 16, 32, 0.4);
  border-radius: 8px;
  border: 1px solid var(--border);
  min-height: 40px;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
}

/* ========== 机器人状态条 ========== */
.status-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.status-bar > span {
  color: var(--text-secondary);
  font-size: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(10, 16, 32, 0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all 0.3s ease;
}

.status-bar > span:hover {
  border-color: var(--border-bright);
  background: rgba(10, 16, 32, 0.6);
}

.status-bar b {
  color: var(--text);
  font-size: 17px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}

/* ========== 日志框 ========== */
.log-box {
  background: rgba(5, 8, 16, 0.6);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  max-height: 340px;
  overflow: auto;
  font-size: 12px;
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  color: var(--text-secondary);
  white-space: pre-wrap;
  line-height: 1.6;
}

.log-box::-webkit-scrollbar { width: 6px; }
.log-box::-webkit-scrollbar-track { background: transparent; }
.log-box::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ========== 导航栏 ========== */
.nav {
  display: flex;
  gap: 4px;
}
.nav-item {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.25s ease;
  letter-spacing: 0.2px;
}
.nav-item:hover {
  color: var(--text);
  background: rgba(255,255,255,0.04);
}
.nav-item.active {
  color: var(--primary);
  background: var(--primary-subtle);
}

/* ========== 告警横幅 ========== */
#alerts-banner { margin-bottom: 16px; }
.alert {
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: slideIn 0.3s ease;
}
.alert::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.alert-danger {
  background: var(--red-subtle);
  color: var(--red);
  border: 1px solid rgba(255, 92, 122, 0.2);
}
.alert-danger::before { background: var(--red); box-shadow: 0 0 8px var(--red); }
.alert-warning {
  background: var(--yellow-subtle);
  color: var(--yellow);
  border: 1px solid rgba(255, 179, 71, 0.2);
}
.alert-warning::before { background: var(--yellow); box-shadow: 0 0 8px var(--yellow); }
.alert-success {
  background: var(--green-subtle);
  color: var(--green);
  border: 1px solid rgba(46, 213, 115, 0.2);
}
.alert-success::before { background: var(--green); box-shadow: 0 0 8px var(--green); }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ========== 核心数据卡片网格 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0.4;
}
.stat-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.stat-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  font-weight: 600;
}
.stat-value {
  font-size: 24px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text);
  letter-spacing: -0.5px;
}
.stat-value.positive { color: var(--green); }
.stat-value.negative { color: var(--red); }
.stat-sub {
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}
.tag-sandbox {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--yellow-subtle);
  color: var(--yellow);
  font-weight: 600;
  font-size: 10px;
}
.tag-live {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--red-subtle);
  color: var(--red);
  font-weight: 600;
  font-size: 10px;
}

/* ========== 机器人控制条 ========== */
.bot-control {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.bot-status {
  display: flex;
  align-items: center;
  gap: 10px;
}
.status-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
}
.status-dot.running {
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
  animation: pulse 2s infinite;
}
.status-dot.stopped {
  background: var(--red);
  box-shadow: 0 0 8px rgba(255, 92, 122, 0.4);
}
#bot-status-text {
  font-size: 15px;
  font-weight: 600;
}
.bot-meta {
  font-size: 12px;
  color: var(--text-dim);
  margin-left: 8px;
}
.bot-actions .btn {
  width: auto;
  padding: 10px 24px;
}

/* ========== 迷你统计 ========== */
.mini-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.mini-stat {
  background: rgba(10, 16, 32, 0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  text-align: center;
  transition: all 0.3s ease;
}
.mini-stat:hover {
  border-color: var(--border-bright);
  background: rgba(10, 16, 32, 0.6);
}
.mini-val {
  font-size: 20px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--primary);
}
.mini-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========== 持仓/交易列表 ========== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  border-radius: 11px;
  background: var(--primary-subtle);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}
.pos-list, .trade-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.pos-item, .trade-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  background: rgba(10, 16, 32, 0.4);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all 0.2s ease;
}
.pos-item:hover, .trade-item:hover {
  border-color: var(--border-bright);
  background: rgba(10, 16, 32, 0.6);
}
.pos-sym, .trade-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.pos-name, .trade-sym {
  font-weight: 600;
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
}
.pos-info, .trade-mid {
  display: flex;
  gap: 20px;
  font-size: 12px;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
}
.pos-pnl, .trade-pnl {
  font-weight: 700;
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  min-width: 80px;
  text-align: right;
}
.trade-time {
  color: var(--text-dim);
}
.side-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.side-long {
  background: rgba(46, 213, 115, 0.12);
  color: var(--green);
  border: 1px solid rgba(46, 213, 115, 0.2);
}
.side-short {
  background: rgba(255, 92, 122, 0.12);
  color: var(--red);
  border: 1px solid rgba(255, 92, 122, 0.2);
}
.strat-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(100, 120, 255, 0.1);
  color: #8a9bff;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid rgba(100, 120, 255, 0.15);
}
.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-dim);
  font-size: 13px;
}
.ok-text { color: var(--green); font-weight: 500; }

/* ========== 表格（持仓/交易详情页） ========== */
.table-wrap {
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 700px;
}
th {
  padding: 12px 14px;
  text-align: left;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 16, 32, 0.5);
  white-space: nowrap;
}
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  transition: background 0.2s ease;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(0, 230, 168, 0.03); }
.empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 48px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
}
.positive { color: var(--green); font-weight: 600; }
.negative { color: var(--red); font-weight: 600; }
.table-wrap::-webkit-scrollbar { height: 6px; }
.table-wrap::-webkit-scrollbar-track { background: transparent; }
.table-wrap::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ========== 动画 ========== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ========== 响应式 ========== */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .mini-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .header { padding: 12px 14px; flex-wrap: wrap; gap: 10px; }
  .nav { order: 3; width: 100%; justify-content: center; overflow-x: auto; }
  .main { padding: 0 12px; margin: 16px auto; max-width: 100%; }
  .card { padding: 18px; border-radius: 14px; }
  .auth-card { padding: 28px 22px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-value { font-size: 18px; }
  .mini-stats { grid-template-columns: 1fr 1fr; gap: 8px; }
  .bot-control { flex-direction: column; gap: 14px; align-items: flex-start; }
  .bot-actions { width: 100%; }
  .bot-actions .btn { width: 100%; }
  .pos-info, .trade-mid { flex-direction: column; gap: 4px; }
  table { font-size: 12px; }
  th, td { padding: 10px 12px; }
}