/* ==========================================================================
   模拟支付网关 UI —— pay.html / admin.html 共用样式
   设计语言：温暖咖啡棕 × 乳白 × 状态绿；克制、清晰、大金额
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --bg: #F6EEE2;
  --panel: #FFFCF6;
  --panel-2: #FBF3E6;
  --ink: #2E2117;
  --ink-soft: #6B584A;
  --ink-faint: #8C7660;

  --line: #EADDC8;
  --line-strong: #D9C6A8;

  --brown: #5C4033;
  --brown-dark: #43301F;
  --brown-soft: #8A6A52;
  --brown-tint: #F1E5D2;

  --amber: #9A5B12;
  --amber-bg: #FBEFDA;
  --amber-line: #EFD9AE;

  --green: #2E6B44;
  --green-bg: #E4F1E6;
  --green-line: #C6DFC9;

  --red: #A63A2B;
  --red-bg: #F8E8E2;
  --red-line: #EBCBC0;

  --focus: #8C5A2B;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 12px 32px rgba(78, 52, 31, 0.10);

  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

/* ---------- 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body.page-pay {
  background:
    radial-gradient(1100px 480px at 50% -12%, #FCF3E3 0%, rgba(252, 243, 227, 0) 70%),
    var(--bg);
}

h1, h2, h3, h4 {
  font-weight: 700;
  color: var(--brown-dark);
  line-height: 1.35;
}

a {
  color: var(--brown);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

::selection {
  background: var(--brown-tint);
}

/* ---------- 工具类 ---------- */
.is-hidden {
  display: none !important;
}

.muted {
  color: var(--ink-soft);
}

.small {
  font-size: 12.5px;
}

.mono {
  font-family: var(--mono);
  font-size: 0.92em;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.num {
  font-variant-numeric: tabular-nums;
}

.num-warn {
  color: var(--amber);
  font-weight: 700;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -56px;
  z-index: 50;
  background: var(--brown-dark);
  color: #FFF6E8;
  padding: 10px 16px;
  border-radius: 10px;
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ---------- 顶栏 / 页脚 ---------- */
.topbar {
  background: linear-gradient(135deg, #4A3221 0%, #5C4033 70%, #6A4A38 100%);
  color: #F7EAD7;
  border-bottom: 3px solid #3B281A;
}

.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 16.5px;
  letter-spacing: 0.02em;
}

.brand svg {
  color: #E8C89B;
  flex: none;
}

.topbar-side {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pagefoot {
  text-align: center;
  padding: 18px 16px 30px;
  color: var(--ink-faint);
  font-size: 12.5px;
}

.pagefoot p {
  margin: 0;
}

/* ---------- 徽章 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 11px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  border: 1px solid transparent;
  line-height: 1.6;
  white-space: nowrap;
}

.badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.badge-mock {
  background: var(--amber-bg);
  color: var(--amber);
  border-color: var(--amber-line);
}

.badge-warn {
  background: var(--amber-bg);
  color: var(--amber);
  border-color: var(--amber-line);
}

.badge-ok {
  background: var(--green-bg);
  color: var(--green);
  border-color: var(--green-line);
}

.badge-off {
  background: #EFE8DC;
  color: var(--ink-soft);
  border-color: var(--line-strong);
}

.badge-info {
  background: var(--brown-tint);
  color: var(--brown);
  border-color: var(--line-strong);
}

.badge-error {
  background: var(--red-bg);
  color: var(--red);
  border-color: var(--red-line);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1.5px solid transparent;
  border-radius: 12px;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  line-height: 1.4;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease,
    border-color 0.15s ease, transform 0.05s ease;
}

.btn:active:not([disabled]) {
  transform: translateY(1px);
}

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--brown);
  border-color: var(--brown-dark);
  color: #FFF8EE;
}

.btn-primary:not([disabled]):hover {
  background: #4E3524;
}

.btn-outline {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--brown);
}

.btn-outline:not([disabled]):hover {
  background: var(--brown-tint);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--brown);
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 6px 10px;
}

.btn-ghost:not([disabled]):hover {
  background: var(--brown-tint);
}

.btn-danger {
  background: transparent;
  border-color: var(--red-line);
  color: var(--red);
}

.btn-danger:not([disabled]):hover {
  background: var(--red-bg);
}

.btn-on-dark {
  background: rgba(255, 246, 232, 0.12);
  border-color: rgba(247, 234, 215, 0.45);
  color: #F7EAD7;
}

.btn-on-dark:not([disabled]):hover {
  background: rgba(255, 246, 232, 0.22);
}

.btn-xl {
  width: 100%;
  padding: 15px 22px;
  font-size: 17px;
  border-radius: 14px;
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 5px 12px;
  font-size: 13px;
  border-radius: 9px;
}

/* ---------- 面板 ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.panel h2 {
  font-size: 18px;
  margin: 0 0 4px;
}

.panel h3 {
  font-size: 15px;
  margin: 18px 0 8px;
}

.panel-sub {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--ink-faint);
}

/* ---------- 提示条 ---------- */
.alert {
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13.5px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--ink-soft);
  margin: 12px 0 0;
  overflow-wrap: anywhere;
}

.alert-error {
  background: var(--red-bg);
  border-color: var(--red-line);
  color: var(--red);
}

.alert-warn {
  background: var(--amber-bg);
  border-color: var(--amber-line);
  color: var(--amber);
}

.alert-ok {
  background: var(--green-bg);
  border-color: var(--green-line);
  color: var(--green);
}

.alert-info {
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--ink-soft);
}

/* ---------- 表单 ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field > label,
.field-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"] {
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #FFFFFF;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  min-width: 0;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="number"] {
  font-variant-numeric: tabular-nums;
}

input:focus {
  border-color: var(--brown-soft);
  box-shadow: 0 0 0 3px rgba(140, 90, 43, 0.18);
  outline: none;
}

input[readonly] {
  background: var(--panel-2);
  color: var(--ink-faint);
}

.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.form-row .field {
  flex: 1 1 180px;
}

.form-row .field-narrow {
  flex: 0 1 140px;
}

/* ---------- 状态块（加载 / 空 / 错误） ---------- */
.state-block {
  padding: 26px 14px;
  text-align: center;
  color: var(--ink-faint);
  font-size: 14px;
}

.state-text {
  text-align: center;
  color: var(--ink-faint);
  font-size: 14px;
  margin: 2px 0 0;
}

.state-block .retry-space {
  margin-top: 12px;
}

.spinner {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 3px solid var(--line-strong);
  border-top-color: var(--brown);
  animation: spin 0.8s linear infinite;
  margin: 0 auto 10px;
}

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

/* ==========================================================================
   付款页 pay.html
   ========================================================================== */
.pay-main {
  max-width: 470px;
  margin: 26px auto 44px;
  padding: 0 14px;
}

.pay-panel {
  padding: 26px 22px 24px;
  text-align: center;
}

.pay-head {
  display: flex;
  justify-content: center;
  margin-bottom: 4px;
}

.pay-seller {
  font-size: 13.5px;
  color: var(--ink-faint);
  margin: 14px 0 2px;
  letter-spacing: 0.06em;
}

.pay-subject {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink-soft);
  margin: 0 0 8px;
  overflow-wrap: anywhere;
}

.pay-amount {
  margin: 6px 0 2px;
  color: var(--brown-dark);
  white-space: nowrap;
}

.pay-cur {
  font-size: 24px;
  font-weight: 700;
  margin-right: 3px;
  vertical-align: 14px;
}

.pay-amount-num {
  font-size: clamp(46px, 13vw, 62px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}

.pay-refunded {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 2px 0 0;
}

.pay-meta {
  margin: 18px 0 4px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  display: grid;
  gap: 8px;
  text-align: left;
}

.pay-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  font-size: 13.5px;
}

.pay-meta-row dt {
  color: var(--ink-faint);
  flex: none;
}

.pay-meta-row dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
  overflow-wrap: anywhere;
}

.pay-actions {
  margin-top: 18px;
}

.pay-hint {
  font-size: 12.5px;
  color: var(--ink-faint);
  margin: 10px 0 0;
}

/* 结果态 */
.pay-result {
  padding: 10px 0 4px;
}

.result-icon {
  width: 74px;
  height: 74px;
  border-radius: 50%;
  margin: 8px auto 14px;
  display: none;
  align-items: center;
  justify-content: center;
}

.pay-result.is-ok .result-icon-ok,
.pay-result.is-warn .result-icon-warn,
.pay-result.is-off .result-icon-off {
  display: flex;
}

.result-icon-ok {
  background: var(--green-bg);
  border: 2px solid var(--green-line);
  color: var(--green);
}

.result-icon-warn {
  background: var(--red-bg);
  border: 2px solid var(--red-line);
  color: var(--red);
}

.result-icon-off {
  background: #EFE8DC;
  border: 2px solid var(--line-strong);
  color: var(--ink-soft);
}

.pay-result h2 {
  font-size: 21px;
  margin: 0 0 6px;
}

.pay-result p {
  margin: 0;
  font-size: 13.5px;
}

/* 错误面板 */
.pay-error-title {
  font-size: 19px;
  margin: 0 0 6px;
}

#pay-error .btn {
  margin-top: 14px;
}

/* ==========================================================================
   管理页 admin.html
   ========================================================================== */
.auth-wrap {
  min-height: calc(100vh - 240px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 14px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  padding: 30px 26px 26px;
}

.auth-card h1 {
  font-size: 21px;
  margin: 0 0 6px;
}

.auth-card .lead {
  margin: 0 0 18px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.auth-card .field {
  margin-bottom: 6px;
}

.auth-foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  font-size: 12px;
  color: var(--ink-faint);
}

.dash {
  max-width: 1100px;
  margin: 20px auto 44px;
  padding: 0 16px;
  display: grid;
  gap: 18px;
}

.section-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 6px;
}

/* 日期筛选 */
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin: 10px 0 6px;
}

.filter-bar .field {
  flex: 0 1 180px;
}

.filter-note {
  font-size: 12.5px;
  color: var(--ink-faint);
  margin: 6px 0 0;
}

/* 统计卡片 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.stat-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 15px;
}

.stat-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-faint);
}

.stat-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--brown-dark);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
  margin-top: 2px;
  overflow-wrap: anywhere;
}

.stat-value-small {
  font-size: 20px;
}

.stat-card-ok .stat-value {
  color: var(--green);
}

.stat-card-warn .stat-value {
  color: var(--amber);
}

.stat-card-error .stat-value {
  color: var(--red);
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #FFFDF8;
  -webkit-overflow-scrolling: touch;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.table-wrap th {
  text-align: left;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-faint);
  background: var(--panel-2);
  padding: 10px 12px;
  border-bottom: 1.5px solid var(--line);
  white-space: nowrap;
}

.table-wrap td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  vertical-align: top;
}

.table-wrap tbody tr:last-child td {
  border-bottom: none;
}

.table-wrap .num-cell {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.table-note {
  font-size: 12.5px;
  color: var(--ink-faint);
  margin: 8px 2px 0;
}

.cell-clip {
  display: block;
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bar-track {
  margin-top: 5px;
  height: 5px;
  border-radius: 3px;
  background: var(--brown-tint);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--brown-soft);
}

.link-sm {
  font-size: 12px;
  color: var(--brown);
}

/* 演示付款结果 */
.demo-result {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-top: 16px;
  padding: 16px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.qr-col {
  flex: 0 0 auto;
  text-align: center;
}

.qr-box {
  width: 184px;
  padding: 10px;
  background: #FFFFFF;
  border: 1.5px solid var(--line-strong);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.qr-box img {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  border-radius: 6px;
}

.qr-col .small {
  margin: 8px 0 0;
  color: var(--ink-faint);
}

.demo-info {
  flex: 1 1 280px;
  min-width: 260px;
}

.kv-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
}

.kv-row:last-of-type {
  border-bottom: none;
}

.kv-row .k {
  color: var(--ink-faint);
  flex: none;
  font-weight: 600;
}

.kv-row .v {
  text-align: right;
  overflow-wrap: anywhere;
  font-weight: 600;
}

.kv-row .v a {
  font-weight: 600;
}

.demo-status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* 退款子表单 */
.refund-box {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1.5px dashed var(--line-strong);
}

.refund-box h4 {
  margin: 0 0 4px;
  font-size: 14px;
}

.refund-box .note {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--ink-faint);
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .panel {
    padding: 18px 15px;
  }

  .topbar-inner {
    padding: 10px 12px;
  }

  .brand {
    font-size: 15px;
  }

  .filter-bar,
  .form-row {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-bar .field,
  .form-row .field,
  .form-row .field-narrow {
    flex: 1 1 auto;
  }

  .form-row .btn,
  .filter-bar .btn {
    width: 100%;
  }

  .demo-result {
    flex-direction: column;
    align-items: center;
  }

  .demo-info {
    width: 100%;
    min-width: 0;
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pay-main {
    margin-top: 16px;
  }
}

@media (max-width: 380px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .btn,
  input,
  .skip-link {
    transition: none;
  }

  .spinner {
    animation-duration: 2.4s;
  }
}