/* Motion Lab 样式 —— 浅色主题，蓝色主调，绿/黄/红状态色（对齐 ARC 原型） */
:root {
  /* 主色：蓝 */
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-900: #1e3a8a;
  /* 中性：slate */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  /* 状态：绿 / 琥珀 / 红 / 紫 */
  --green-50: #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-600: #16a34a;
  --green-700: #15803d;
  --amber-50: #fffbeb;
  --amber-100: #fef3c7;
  --amber-200: #fde68a;
  --amber-600: #d97706;
  --amber-700: #b45309;
  --red-50: #fef2f2;
  --red-100: #fee2e2;
  --red-200: #fecaca;
  --red-600: #dc2626;
  --red-700: #b91c1c;
  --purple-50: #faf5ff;
  --purple-600: #9333ea;
  /* 圆角/阴影 */
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, .08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--slate-50);
  color: var(--slate-900);
  font-size: 14px;
  line-height: 1.6;
}

a { color: var(--blue-600); text-decoration: none; }
a:hover { color: var(--blue-700); }

/* ===== 布局 ===== */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: #fff;
  border-right: 1px solid var(--slate-200);
  padding: 20px 14px;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex; flex-direction: column;
}
.sidebar .brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 17px; font-weight: 700; color: var(--slate-900);
  padding: 6px 10px; margin-bottom: 24px;
}
.sidebar .brand .logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px;
}
.sidebar nav { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 8px;
  color: var(--slate-600); font-weight: 500; transition: all .15s;
}
.sidebar nav a:hover { background: var(--slate-100); color: var(--slate-900); }
.sidebar nav a.active { background: var(--blue-50); color: var(--blue-700); font-weight: 600; }
.sidebar nav a .icon { width: 18px; text-align: center; }
.sidebar .side-foot { padding: 12px 8px; border-top: 1px solid var(--slate-200); font-size: 12px; color: var(--slate-400); }

.main { margin-left: 220px; flex: 1; padding: 24px 28px; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}
.topbar h1 { font-size: 22px; font-weight: 700; }
.topbar .user { display: flex; align-items: center; gap: 10px; color: var(--slate-600); }
.topbar .avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--blue-100); color: var(--blue-700);
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}

/* ===== 卡片 ===== */
.card {
  background: #fff; border: 1px solid var(--slate-200);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.card + .card { margin-top: 16px; }
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; color: var(--slate-800); }
.card-title .sub { font-size: 12px; font-weight: 400; color: var(--slate-400); margin-left: 8px; }

/* ===== 统计卡网格 ===== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat {
  background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow);
}
.stat .label { font-size: 13px; color: var(--slate-500); }
.stat .value { font-size: 28px; font-weight: 700; margin-top: 4px; color: var(--slate-900); }
.stat .delta { font-size: 12px; color: var(--slate-400); margin-top: 4px; }
.stat .delta.up { color: var(--green-600); }
.stat .delta.down { color: var(--red-600); }

/* ===== 网格 ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 1000px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* ===== 表格 ===== */
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left; font-size: 12px; font-weight: 600; color: var(--slate-500);
  padding: 10px 12px; border-bottom: 1px solid var(--slate-200); text-transform: uppercase; letter-spacing: .03em;
}
td { padding: 12px; border-bottom: 1px solid var(--slate-100); color: var(--slate-700); }
tr:hover td { background: var(--slate-50); }
tr:last-child td { border-bottom: none; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px; border-radius: 8px; border: 1px solid transparent;
  font-size: 14px; font-weight: 500; cursor: pointer; transition: all .15s;
}
.btn-primary { background: var(--blue-600); color: #fff; }
.btn-primary:hover { background: var(--blue-700); }
.btn-outline { background: #fff; border-color: var(--slate-300); color: var(--slate-700); }
.btn-outline:hover { background: var(--slate-50); }
.btn-ghost { background: transparent; color: var(--slate-600); }
.btn-ghost:hover { background: var(--slate-100); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-danger { background: var(--red-600); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ===== 表单 ===== */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 500; color: var(--slate-700); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--slate-300);
  border-radius: 8px; font-size: 14px; color: var(--slate-900);
  background: #fff; transition: border .15s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px var(--blue-100);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }

/* ===== 徽章 / 状态标签 ===== */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.badge-green { background: var(--green-100); color: var(--green-700); }
.badge-amber { background: var(--amber-100); color: var(--amber-700); }
.badge-red { background: var(--red-100); color: var(--red-700); }
.badge-blue { background: var(--blue-100); color: var(--blue-700); }
.badge-slate { background: var(--slate-100); color: var(--slate-600); }
.badge-purple { background: var(--purple-50); color: var(--purple-600); }

/* ===== 进度条 ===== */
.progress { height: 8px; background: var(--slate-100); border-radius: 999px; overflow: hidden; }
.progress .bar { height: 100%; background: var(--blue-500); border-radius: 999px; transition: width .3s; }
.progress .bar.green { background: var(--green-600); }
.progress .bar.amber { background: var(--amber-600); }
.progress .bar.red { background: var(--red-600); }

/* ===== 登录页 ===== */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 50%, #e0e7ff 100%);
  padding: 20px;
}
.login-card {
  width: 380px; background: #fff; border-radius: 16px; padding: 36px;
  box-shadow: 0 10px 40px rgba(15, 23, 42, .12);
}
.login-card .brand { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.login-card .brand .logo {
  width: 42px; height: 42px; border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px;
}
.login-card .brand h1 { font-size: 20px; font-weight: 700; }
.login-card .subtitle { color: var(--slate-500); font-size: 14px; margin-bottom: 28px; }
.login-card .btn { width: 100%; justify-content: center; padding: 11px; font-size: 15px; }
.login-error { background: var(--red-50); color: var(--red-700); border: 1px solid var(--red-200); padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; display: none; }

/* ===== 提示 / 空状态 ===== */
.empty { text-align: center; padding: 48px 20px; color: var(--slate-400); }
.empty .icon { font-size: 40px; margin-bottom: 12px; }

/* ===== 上传区 ===== */
.dropzone {
  border: 2px dashed var(--slate-300); border-radius: var(--radius);
  padding: 48px 20px; text-align: center; color: var(--slate-500);
  cursor: pointer; transition: all .2s;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--blue-500); background: var(--blue-50); color: var(--blue-700); }

/* ===== 列表项 ===== */
.list-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 4px; border-bottom: 1px solid var(--slate-100);
}
.list-item:last-child { border-bottom: none; }

/* ===== 图表容器 ===== */
.chart-box { position: relative; height: 260px; }

/* ===== 指标面板 ===== */
.metric { padding: 14px; border-radius: 8px; border: 1px solid var(--slate-200); }
.metric .m-label { font-size: 12px; color: var(--slate-500); }
.metric .m-value { font-size: 20px; font-weight: 700; margin-top: 2px; }
.metric .m-note { font-size: 12px; margin-top: 4px; }
.metric.good { background: var(--green-50); border-color: var(--green-200); }
.metric.warn { background: var(--amber-50); border-color: var(--amber-200); }
.metric.bad { background: var(--red-50); border-color: var(--red-200); }

.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.text-sm { font-size: 13px; }
.text-slate-500 { color: var(--slate-500); }
.text-slate-400 { color: var(--slate-400); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }

/* ===== 模态框 ===== */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(15, 23, 42, .5); z-index: 100;
  align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.show { display: flex; }
.modal {
  background: #fff; border-radius: 14px; width: 100%; max-width: 560px;
  max-height: 90vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(15, 23, 42, .3);
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; border-bottom: 1px solid var(--slate-200);
  font-size: 16px; font-weight: 600;
}
.modal-close { cursor: pointer; color: var(--slate-400); font-size: 20px; border: none; background: none; }
.modal-close:hover { color: var(--slate-600); }
.modal-body { padding: 22px; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 10px;
  padding: 16px 22px; border-top: 1px solid var(--slate-200);
}

/* ===== Toast ===== */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 200;
  background: var(--slate-900); color: #fff; padding: 12px 18px;
  border-radius: 8px; font-size: 14px; box-shadow: var(--shadow-md);
  opacity: 0; transform: translateY(-8px); transition: all .25s;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--red-600); }

/* ===== 批次综合分析 ===== */
.summary-box { background: var(--slate-50); border-left: 3px solid var(--blue-500); padding: 14px 18px; border-radius: 8px; line-height: 1.7; color: var(--slate-700); }
.summary-box p { margin: 0 0 8px; }
.summary-box p:last-child { margin-bottom: 0; }
.sub-title { font-size: 13px; font-weight: 600; color: var(--slate-600); margin-bottom: 8px; }
.unit { font-size: 14px; font-weight: 400; color: var(--slate-400); margin-left: 2px; }
.mb-4 { margin-bottom: 4px; }
.mb-8 { margin-bottom: 8px; }