:root {
  --bg-main: linear-gradient(135deg, #e7fbff 0%, #f2f9ff 56%, #e8f4ff 100%);
  --panel-bg: #ffffff;
  --text-main: #0b2337;
  --text-sub: #547086;
  --brand: #0284c7;
  --brand-2: #06b6d4;
  --danger: #dc2626;
  --success: #16a34a;
  --border: #cfe5f1;
  --shadow: 0 12px 32px rgba(3, 35, 65, 0.08);
  --radius-xl: 18px;
  --radius-lg: 12px;
  --radius-md: 10px;
  --ease-smooth: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text-main); }
body { background: #edf6fb; }

.login-page {
  min-height: 100vh;
  background: var(--bg-main);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.bg-bubble {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  filter: blur(70px);
  opacity: 0.25;
}

.bubble-a { right: -120px; top: -120px; background: #60a5fa; }
.bubble-b { left: -120px; bottom: -120px; background: #818cf8; }

.login-layout {
  width: 100%;
  max-width: 980px;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 24px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.login-layout-single {
  max-width: 560px;
  grid-template-columns: 1fr;
}

.login-card,
.wechat-card,
.panel,
.modal-dialog {
  background: var(--panel-bg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  transition: transform .22s var(--ease-smooth), box-shadow .22s var(--ease-smooth);
}

.login-card {
  padding: 42px;
}

.login-header h1 {
  margin: 0;
  font-size: 36px;
  line-height: 1.2;
  font-weight: 700;
}

.login-header h1 span {
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-header p {
  margin: 12px 0 24px;
  color: var(--text-sub);
}

.form-stack { display: grid; gap: 12px; }
.field-label { font-size: 14px; color: #374151; }
.input-wrap { position: relative; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 11px 12px;
  min-height: 42px;
  outline: none;
  font-size: 14px;
  background: #fff;
  transition: border-color .2s, box-shadow .2s, background-color .2s;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #67d6ff;
  box-shadow: 0 0 0 3px rgba(6, 182, 212, .18);
}

.btn {
  border: 1px solid #cfd8e6;
  border-radius: var(--radius-md);
  min-height: 42px;
  padding: 11px 14px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: #f2fbff;
  color: #0f3651;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: transform .16s var(--ease-smooth), box-shadow .16s var(--ease-smooth), filter .16s var(--ease-smooth), background-color .2s;
  will-change: transform;
}

.btn:hover {
  filter: none;
  background: #e6f6ff;
  border-color: #9bd3e8;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0) scale(0.99);
}

.btn:disabled {
  opacity: .6;
  cursor: not-allowed;
  transform: none;
}

.btn.loading {
  pointer-events: none;
  opacity: .8;
}

.btn.loading::after {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: spin .75s linear infinite;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  border-color: transparent;
  box-shadow: 0 10px 20px rgba(37, 99, 235, .25);
}

.btn-primary:hover {
  background: linear-gradient(90deg, #0369a1, #0891b2);
}

.btn-secondary {
  background: #dff6ff;
  color: #0369a1;
  border-color: #bae6fd;
}

.btn-secondary:hover {
  background: #cff0ff;
  border-color: #7dd3fc;
}

.btn-danger {
  background: #ffe4e6;
  color: #be123c;
  border-color: #fecdd3;
}

.btn-danger:hover {
  background: #fecdd3;
  border-color: #fda4af;
}

.btn-block { width: 100%; }

.form-msg {
  min-height: 20px;
  margin: 0;
  font-size: 13px;
  color: var(--text-sub);
}

.form-msg.error { color: #dc2626; }
.form-msg.success { color: #16a34a; }
.form-msg.info { color: #2563eb; }

.copyright { margin-top: 20px; font-size: 13px; color: #9ca3af; text-align: center; }

.wechat-card {
  padding: 26px;
  text-align: center;
}

.wechat-card h3 { margin: 0 0 8px; }
.wechat-card p { margin: 0 0 12px; color: var(--text-sub); }

.qrcode-wrap {
  margin: 0 auto 12px;
  width: 180px;
  height: 180px;
  border-radius: 16px;
  background: #f8fafc;
  display: grid;
  place-items: center;
  border: 1px solid #e2e8f0;
}

.qrcode-wrap img { width: 150px; height: 150px; object-fit: contain; }
.wechat-tip { font-size: 13px; color: #4b5563; }

.app-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% 0%, rgba(103, 214, 255, 0.24), transparent 34%),
    radial-gradient(circle at 92% 8%, rgba(125, 211, 252, 0.24), transparent 30%),
    linear-gradient(145deg, #eff8fc 0%, #e8f2f9 100%);
  padding: 20px;
}

.app-header {
  max-width: 1280px;
  margin: 0 auto 16px;
  padding: 20px;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, #ffffff 0%, #f2fbff 100%);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  box-shadow: var(--shadow);
  border: 1px solid #cde5f3;
}

.app-header h1 {
  margin: 0;
  font-size: 26px;
  color: #0b3a57;
  letter-spacing: 0.2px;
}

.app-header p { margin: 8px 0 0; color: var(--text-sub); font-size: 14px; }

.header-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.grid-two {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
}

.panel {
  padding: 22px;
  border: 1px solid #d2e7f3;
}

.config-main {
  max-width: 860px;
  margin: 0 auto;
}

.panel h2 {
  margin: 0 0 18px;
  font-size: 20px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.form-grid label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: #374151;
}

.full-row { grid-column: 1 / -1; }
.row-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.mode-card {
  padding: 12px;
  border: 1px solid #d2e7f3;
  border-radius: 12px;
  background: linear-gradient(180deg, #ffffff 0%, #f3fbff 100%);
}

.mode-title {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
}

.config-formula-item {
  display: none !important;
}

.result-box {
  min-height: 320px;
  border: 1px dashed #d1d5db;
  border-radius: 14px;
  padding: 14px;
  font-size: 14px;
  line-height: 1.6;
  background: #f9fafb;
  transition: border-color .2s, box-shadow .2s, background-color .2s;
}

.result-box:not(.empty) {
  border-style: solid;
  border-color: #9ddff5;
  box-shadow: inset 0 0 0 1px rgba(6, 182, 212, 0.07);
  background: linear-gradient(180deg, #f2fdff 0%, #ffffff 36%);
}

.result-box.result-updated {
  animation: resultPop .28s var(--ease-smooth);
}

.result-box.empty {
  color: #6b7280;
  display: grid;
  place-items: center;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.kv {
  background: #fff;
  border: 1px solid #d4e7f1;
  border-radius: 10px;
  padding: 10px;
  transition: transform .15s var(--ease-smooth), box-shadow .15s var(--ease-smooth), border-color .15s;
}

.kv:hover {
  transform: translateY(-1px);
  border-color: #8fd5eb;
  box-shadow: 0 6px 16px rgba(14, 165, 233, 0.09);
}

.kv strong { display: block; color: #111827; font-size: 16px; margin-top: 4px; }

.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  padding: 16px;
  z-index: 50;
}

.modal.hidden { display: none; }

.modal-dialog {
  width: min(760px, 100%);
  animation: modalIn .22s var(--ease-smooth);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid #e5e7eb;
}

.modal-body { padding: 16px 18px 20px; }

.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 0;
  background: #f3f4f6;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.toolbar input[type="text"] { min-width: 280px; flex: 1; }

.table-wrap {
  overflow: auto;
  border: 1px solid #d2e7f3;
  border-radius: 12px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background: #fff;
}

th, td {
  border-bottom: 1px solid #f1f5f9;
  padding: 10px;
  text-align: left;
  white-space: nowrap;
}

thead th {
  position: sticky;
  top: 0;
  background: #f8fafc;
  z-index: 1;
}

tr:hover td { background: #f9fbff; }

.tag-positive { color: #15803d; font-weight: 700; }
.tag-negative { color: #dc2626; font-weight: 700; }

.diff-preview {
  margin-top: 14px;
  border: 1px solid #dbeafe;
  background: #f8fbff;
  border-radius: 12px;
  padding: 12px;
}

.diff-preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.diff-preview.hidden { display: none; }

.diff-preview h3 {
  margin: 0;
  font-size: 14px;
}

.diff-preview-body {
  display: grid;
  gap: 6px;
}

.diff-row {
  font-size: 13px;
  color: #1f2937;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 6px 8px;
}

.field-changed {
  border-color: #f59e0b !important;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2) !important;
  background: #fffaf0;
}

.field-changed:focus {
  border-color: #f59e0b !important;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.24) !important;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes resultPop {
  from {
    transform: translateY(2px);
    opacity: 0.85;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 980px) {
  .login-layout { grid-template-columns: 1fr; max-width: 640px; }
  .grid-two { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .app-header { flex-direction: column; align-items: flex-start; }
}