:root {
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-2: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --faint: rgba(255, 255, 255, 0.55);
  --border: rgba(255, 255, 255, 0.14);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  --focus: rgba(120, 182, 255, 0.75);
  --danger: #ff4d6d;
  --success: #31d0aa;
  --accent: #78b6ff;
  --radius: 18px;
  --radius-sm: 12px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans", "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f6ff;
    --panel: rgba(15, 23, 42, 0.05);
    --panel-2: rgba(15, 23, 42, 0.08);
    --text: rgba(15, 23, 42, 0.92);
    --muted: rgba(15, 23, 42, 0.75);
    --faint: rgba(15, 23, 42, 0.6);
    --border: rgba(15, 23, 42, 0.12);
    --shadow: 0 18px 55px rgba(15, 23, 42, 0.18);
  }
}

/* 全局基础：统一字体/背景/滚动与选择体验 */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 20% 0%, rgba(120, 182, 255, 0.24), transparent 60%),
    radial-gradient(900px 600px at 90% 20%, rgba(49, 208, 170, 0.18), transparent 55%), var(--bg);
  color: var(--text);
}

::selection {
  background: rgba(120, 182, 255, 0.35);
}

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

.page {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 18px;
  padding: 22px;
  max-width: 1120px;
  margin: 0 auto;
}

/* 顶部摘要 */
.header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 18px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.header__amount {
  font-size: 28px;
  font-weight: 750;
  letter-spacing: 0.2px;
}

.header__merchant {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.header__meta {
  text-align: right;
}

.header__metaKey {
  font-size: 12px;
  color: var(--faint);
}

.header__metaVal {
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* 主布局：桌面左右分栏，移动端上下堆叠 */
.main {
  display: grid;
  grid-template-columns: 1.06fr 1fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 920px) {
  .main {
    grid-template-columns: 1fr;
  }
}

.cardPanel,
.formPanel {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

/* 卡片预览：3D 翻转 */
.card {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 22px;
  position: relative;
  perspective: 1200px;
  transform-style: preserve-3d;
}

.card__front,
.card__back {
  position: absolute;
  inset: 0;
  border-radius: 22px;
  overflow: hidden;
  padding: 18px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: radial-gradient(900px 480px at 20% 0%, rgba(120, 182, 255, 0.28), transparent 65%),
    radial-gradient(900px 520px at 90% 40%, rgba(49, 208, 170, 0.18), transparent 55%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  transition: transform 520ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.card__back {
  transform: rotateY(180deg);
}

.card.is-flipped .card__front {
  transform: rotateY(180deg);
}

.card.is-flipped .card__back {
  transform: rotateY(360deg);
}

.card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.card__brand {
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.88);
}

.card__chip {
  width: 46px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.12));
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.12);
}

.card__number {
  font-size: clamp(18px, 2.2vw, 24px);
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: rgba(255, 255, 255, 0.95);
  padding: 6px 0;
}

.card__bottom {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: end;
}

.card__label {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.75);
}

.card__value {
  margin-top: 6px;
  font-size: 14px;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.95);
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card__mag {
  height: 42px;
  margin-top: 14px;
  background: rgba(0, 0, 0, 0.35);
}

.card__cvcWrap {
  margin-top: 16px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  align-items: center;
}

.card__cvcLabel {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.8);
}

.card__cvcVal {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.95);
}

.panelNote {
  margin-top: 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(255, 255, 255, 0.22);
  padding: 12px 12px;
  background: rgba(255, 255, 255, 0.04);
}

.panelNote__title {
  font-weight: 700;
  font-size: 13px;
}

.panelNote__text {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.55;
}

/* 表单：统一字段间距、聚焦态、错误态 */
.form {
  display: grid;
  gap: 14px;
}

.formPanel__title {
  font-size: 16px;
  font-weight: 780;
  letter-spacing: 0.2px;
}

.formPanel__subtitle {
  margin-top: 6px;
  font-size: 12px;
  color: var(--faint);
  line-height: 1.5;
}

.form__summary {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 77, 109, 0.35);
  background: rgba(255, 77, 109, 0.12);
  color: var(--text);
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.55;
}

.form__liveNotice {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(120, 182, 255, 0.32);
  background: rgba(120, 182, 255, 0.12);
  color: var(--text);
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.55;
}

.form__summary ul {
  margin: 8px 0 0;
  padding-left: 18px;
}

.form__summary a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.form__input.is-invalid {
  border-color: rgba(255, 77, 109, 0.65);
  box-shadow: 0 0 0 4px rgba(255, 77, 109, 0.15);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 520px) {
  .form__row {
    grid-template-columns: 1fr;
  }
}

.form__field {
  display: grid;
  gap: 6px;
}

.form__label {
  font-size: 13px;
  color: var(--muted);
}

.form__control {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.form__input {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 12px 12px;
  outline: none;
  font-size: 14px;
  letter-spacing: 0.02em;
  transition: border-color 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.form__textarea {
  resize: vertical;
  min-height: 88px;
}

.form__input:focus {
  border-color: rgba(120, 182, 255, 0.6);
  box-shadow: 0 0 0 4px rgba(120, 182, 255, 0.18);
}

.form__input[readonly] {
  opacity: 0.85;
  cursor: not-allowed;
}

.form__suffix {
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
  user-select: none;
}

.form__help {
  font-size: 12px;
  color: var(--faint);
  line-height: 1.45;
}

.form__error {
  min-height: 18px;
  font-size: 12px;
  color: var(--danger);
  line-height: 1.45;
}

.form__status {
  min-height: 20px;
  font-size: 13px;
  color: var(--muted);
}

.form__status.is-success {
  color: var(--success);
}

.form__status.is-error {
  color: var(--danger);
}

/* 主按钮：加载态/禁用态 */
.button {
  width: 100%;
  border: 0;
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 760;
  color: #0b1220;
  background: linear-gradient(135deg, rgba(120, 182, 255, 1), rgba(49, 208, 170, 1));
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: transform 120ms ease, filter 120ms ease, opacity 120ms ease;
}

.button:hover {
  filter: brightness(1.05);
}

.button:active {
  transform: translateY(1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.7;
  filter: saturate(0.9);
}

.button__spinner {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 2px solid rgba(11, 18, 32, 0.3);
  border-top-color: rgba(11, 18, 32, 0.9);
  display: none;
  animation: spin 800ms linear infinite;
}

.button.is-loading .button__spinner {
  display: inline-block;
}

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

.footer {
  padding: 10px 0 0;
}

.footer__text {
  text-align: center;
  font-size: 12px;
  color: var(--faint);
}