:root {
  --blue: #2D6CDF;
  --blue-d: #1E4FA8;
  --blue-l: #4B85F6;
  --orange: #FF8A3D;
  --bg: #F4F6FA;
  --line: #E6EBF2;
  --txt: #1A2233;
  --sub: #6B7488;
  --ok: #22C3A6;
  --warn: #FFB020;
  --danger: #FF4D4F;
  --chip: #EAF1FE;
  --side-bg: #111827;
  --side-hover: #1F2937;
  --side-active: #2D6CDF;
  --card-shadow: 0 4px 18px rgba(16, 30, 68, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  background: var(--bg);
  color: var(--txt);
  -webkit-font-smoothing: antialiased;
}

.app { display: flex; flex-direction: column; height: 100vh; }
.app.hidden { display: none; }

/* Login gate */
.login-screen {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0E1B3C 0%, #1C3A75 55%, #2D6CDF 100%);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}
.login-card {
  width: 380px; background: #fff; border-radius: 18px;
  padding: 34px 34px 24px; box-shadow: 0 24px 70px rgba(8, 20, 50, .38);
  animation: loginPop .35s ease;
}
@keyframes loginPop { from { opacity: 0; transform: translateY(12px) scale(.98); } to { opacity: 1; transform: none; } }
.login-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.login-brand .mark { width: 42px; height: 42px; border-radius: 11px; font-size: 20px; }
.login-title { font-size: 19px; font-weight: 800; color: var(--txt); }
.login-sub { font-size: 12px; color: var(--sub); margin-top: 3px; }
.login-form { display: flex; flex-direction: column; gap: 8px; }
.login-label { font-size: 13px; color: var(--sub); font-weight: 600; margin-top: 6px; }
.login-input {
  border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px;
  font-size: 15px; font-family: inherit; outline: none; transition: .15s; background: #FAFBFE;
}
.login-input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(45,108,223,.12); background: #fff; }
.login-error { color: var(--danger); font-size: 13px; font-weight: 600; margin-top: 4px; }
.login-btn {
  margin-top: 18px; border: 0; background: var(--blue); color: #fff; font-weight: 700;
  font-size: 16px; letter-spacing: 4px; padding: 13px; border-radius: 10px; cursor: pointer;
  font-family: inherit; transition: .15s;
}
.login-btn:hover { background: var(--blue-d); }
.login-tip { margin-top: 16px; font-size: 12px; color: var(--sub); text-align: center; }
.login-provider {
  margin-top: 10px; font-size: 13px; font-weight: 700; color: var(--blue-d);
  text-align: center; letter-spacing: .5px;
}
.login-foot { position: absolute; bottom: 22px; font-size: 12px; color: rgba(255,255,255,.6); }

/* Header */
header {
  height: 56px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  padding: 0 22px;
  gap: 14px;
  flex: 0 0 auto;
}
.logo, .logo-side {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 16px; color: var(--txt);
}
.mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--orange));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800;
}
.badge {
  background: var(--chip); color: var(--blue); font-size: 12px; font-weight: 600;
  padding: 4px 10px; border-radius: 20px;
}
.spacer { flex: 1; }
.ai-pill {
  display: flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, #EAF1FE, #FFF1E6);
  border: 1px solid var(--line); padding: 5px 12px; border-radius: 20px;
  font-size: 13px; font-weight: 600; color: var(--blue-d);
}
.ai-pill .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 0 3px rgba(34, 195, 166, .18);
}
.user { display: flex; align-items: center; gap: 8px; color: var(--sub); font-size: 13px; }
.user .av {
  width: 28px; height: 28px; border-radius: 50%; background: var(--blue); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700;
}

/* Body */
.body { flex: 1; display: flex; min-height: 0; }

aside {
  width: 220px;
  background: var(--side-bg);
  color: #fff;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  padding: 16px 0 20px;
}
.logo-side { padding: 0 20px 18px; color: #fff; border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 10px; }
.logo-side .mark { background: linear-gradient(135deg, var(--blue-l), var(--orange)); }
.nav-title { font-size: 11px; color: #9CA3AF; letter-spacing: 1px; padding: 12px 20px 8px; text-transform: uppercase; }

nav { display: flex; flex-direction: column; gap: 2px; padding: 0 10px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  border: 0; background: transparent; color: #D1D5DB;
  padding: 11px 14px; border-radius: 8px; font-size: 14px;
  cursor: pointer; text-align: left; font-family: inherit; transition: .15s;
}
.nav-item .ic { width: 20px; text-align: center; font-size: 16px; }
.nav-item:hover { background: var(--side-hover); color: #fff; }
.nav-item.active { background: var(--side-active); color: #fff; font-weight: 600; }

main { flex: 1; padding: 22px 28px; overflow: auto; }
.crumb { font-size: 13px; color: var(--sub); margin-bottom: 14px; }
.crumb b { color: var(--txt); }

/* Card */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--card-shadow);
}
.card h3 { font-size: 16px; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; }
.card h3 .tag {
  font-size: 11px; background: var(--chip); color: var(--blue);
  padding: 3px 10px; border-radius: 20px; font-weight: 600;
}
.card .hint { font-size: 13px; color: var(--sub); margin-bottom: 18px; line-height: 1.6; }

/* Dashboard */
.dashboard-title { font-size: 20px; font-weight: 700; margin-bottom: 18px; }
.stats { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-bottom: 18px; }
.stat-card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; box-shadow: var(--card-shadow); display: flex; align-items: center; gap: 12px;
}
.stat-icon {
  width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; background: #F3F6FB;
}
.stat-icon.blue { color: var(--blue); background: #EAF1FE; }
.stat-icon.green { color: var(--ok); background: #E7FAF6; }
.stat-icon.red { color: var(--danger); background: #FFF0F0; }
.stat-icon.orange { color: var(--orange); background: #FFF4E8; }
.stat-icon.gray { color: var(--sub); background: #F3F6FB; }
.stat-main { flex: 1; }
.stat-label { font-size: 12px; color: var(--sub); margin-bottom: 4px; }
.stat-value { font-size: 22px; font-weight: 700; color: var(--txt); }

.big-card { display: flex; gap: 18px; margin-bottom: 18px; }
.big-card .left { flex: 1; }
.big-card .right { flex: 1; }
.amount-box {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 28px; box-shadow: var(--card-shadow); text-align: center;
}
.amount-label { font-size: 13px; color: var(--sub); margin-bottom: 8px; }
.amount-value { font-size: 42px; font-weight: 700; color: var(--blue); }
.amount-unit { font-size: 16px; color: var(--sub); margin-left: 4px; }

.chart-box {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 20px; box-shadow: var(--card-shadow);
}
.chart-box h4 { font-size: 14px; margin-bottom: 14px; }
.chart-box canvas { width: 100%; height: 180px; }

/* Quick entries */
.quick-title { font-size: 16px; font-weight: 700; margin-bottom: 14px; }
.grid9 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.g9 {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; cursor: pointer; transition: .15s; box-shadow: var(--card-shadow);
}
.g9:hover { transform: translateY(-2px); border-color: var(--blue); }
.g9 .ic { font-size: 24px; margin-bottom: 8px; }
.g9 .t { font-weight: 700; font-size: 14px; margin-bottom: 4px; }
.g9 .d { font-size: 12px; color: var(--sub); line-height: 1.5; }

/* Inputs */
.search { display: flex; gap: 10px; max-width: 700px; }
.search input, .chat-input input {
  flex: 1; border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px;
  font-size: 15px; font-family: inherit; outline: none; transition: .15s;
}
.search input:focus, .chat-input input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(45,108,223,.12); }
.btn {
  border: 0; background: var(--blue); color: #fff; font-weight: 600; font-size: 14px;
  padding: 12px 22px; border-radius: 10px; cursor: pointer; font-family: inherit; transition: .15s;
}
.btn:hover { background: var(--blue-d); }
.btn:disabled { opacity: .6; cursor: default; }
.btn.ghost { background: #fff; color: var(--blue); border: 1.5px solid var(--blue); }
.btn.sm { padding: 8px 14px; font-size: 13px; }

/* Results */
.result { margin-top: 16px; display: none; }
.result.show { display: block; animation: fade .3s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.intent {
  display: inline-flex; align-items: center; gap: 8px; background: #F0F7FF; border: 1px solid #D6E6FF;
  color: var(--blue-d); font-size: 13px; font-weight: 600; padding: 8px 14px; border-radius: 10px; margin-bottom: 14px;
}
.intent .spark { color: var(--orange); }
.cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.cat { background: var(--chip); color: var(--blue-d); font-weight: 600; font-size: 13px; padding: 7px 14px; border-radius: 20px; }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.product-card {
  border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: #fff; position: relative; overflow: hidden;
}
.thumb {
  height: 160px;
  border-radius: 9px;
  background: #F4F6FA;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.thumb img { width: 100%; height: 100%; object-fit: contain; }
.thumb .emoji { font-size: 48px; }

.product-card .thumb { height: 120px; margin-bottom: 10px; }
.product-card .thumb .emoji { font-size: 36px; }
.product-card .thumb .emoji { font-size: 36px; }
.product-card .nm { font-size: 13px; font-weight: 600; line-height: 1.4; height: 38px; overflow: hidden; }
.product-card .meta { font-size: 12px; color: var(--sub); margin-top: 6px; }
.product-card .price { color: var(--orange); font-weight: 700; margin-top: 6px; font-size: 14px; }
.product-card .match {
  position: absolute; top: 10px; right: 10px; background: var(--ok); color: #fff; font-size: 11px;
  padding: 2px 8px; border-radius: 10px;
}
.product-card .supplier { font-size: 11px; color: var(--sub); margin-top: 4px; }

.spec-line {
  display: inline-flex; align-items: center; gap: 8px; background: #FFF7EF; border: 1px solid #FFE0C4;
  color: #B5581A; font-weight: 600; font-size: 13px; padding: 8px 14px; border-radius: 10px; margin-bottom: 14px;
}

/* Form fields */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; max-width: 800px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 12px; color: var(--sub); font-weight: 600; }
.field .val {
  border: 1px solid var(--line); border-radius: 9px; padding: 11px 13px; font-size: 14px; background: #FAFBFE;
  min-height: 42px; display: flex; align-items: center;
}
.field.filled .val { border-color: #BFE9DE; background: #F2FCF9; color: var(--txt); font-weight: 600; }
.field.filled .val::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ok); margin-right: 8px; flex: 0 0 auto; }
.field.empty .val { color: #B9C0CE; border-style: dashed; }
.field.locked .val { background: #EEF3FF; color: var(--blue-d); font-weight: 700; border-color: #C9DBFF; }
.complete-row { margin-top: 18px; display: flex; align-items: center; gap: 14px; }

/* Audit */
.audit-list { display: flex; flex-direction: column; gap: 10px; max-width: 700px; }
.audit-item { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; }
.audit-icon { font-size: 18px; }
.audit-icon.ok { color: var(--ok); }
.audit-icon.fail { color: var(--danger); }
.audit-icon.warn { color: var(--warn); }
.audit-text { flex: 1; font-size: 14px; }
.audit-status { font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 20px; }
.audit-status.ok { background: #E7FAF6; color: var(--ok); }
.audit-status.fail { background: #FFF0F0; color: var(--danger); }
.audit-status.warn { background: #FFF9E6; color: #B58A00; }

/* Compare table */
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: 13px; }
.compare-table th { color: var(--sub); font-weight: 600; background: #FAFBFE; }
.compare-table tr.recommended { background: #F2FCF9; }
.compare-table .tag { font-size: 11px; background: var(--ok); color: #fff; padding: 2px 8px; border-radius: 10px; }
.compare-table .price { color: var(--orange); font-weight: 700; }
.compare-table .diff.up { color: var(--danger); }
.compare-table .diff.down { color: var(--ok); }

/* Chatbot */
.chat { display: flex; flex-direction: column; height: 520px; border: 1px solid var(--line); border-radius: 12px; background: #fff; overflow: hidden; }
.chat-messages { flex: 1; padding: 18px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; }
.chat-bubble { max-width: 70%; padding: 12px 14px; border-radius: 12px; font-size: 14px; line-height: 1.5; }
.chat-bubble.user { align-self: flex-end; background: var(--blue); color: #fff; border-bottom-right-radius: 4px; }
.chat-bubble.bot { align-self: flex-start; background: #F3F6FB; color: var(--txt); border-bottom-left-radius: 4px; }
.chat-input { display: flex; gap: 10px; padding: 14px; border-top: 1px solid var(--line); background: #FAFBFE; }
.chat-input input { border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; font-size: 14px; }
.chat-input .btn { padding: 10px 20px; }
.loading { display: none; align-items: center; gap: 10px; color: var(--blue-d); font-size: 13px; font-weight: 600; margin-top: 14px; }
.loading.show { display: flex; }
.spinner { width: 16px; height: 16px; border: 2.5px solid #CBD8F5; border-top-color: var(--blue); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.before-after { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.before, .after { border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.before { background: #FAFBFE; border-left: 4px solid #E5E7EB; }
.after { background: #F2FCF9; border-left: 4px solid var(--ok); }
.before h4, .after h4 { font-size: 13px; color: var(--sub); margin-bottom: 10px; }
.raw-title { font-size: 14px; color: #6B7280; font-weight: 600; line-height: 1.5; }