:root {
  color-scheme: light;
  --color-primary: #8f4f62;
  --color-primary-dark: #754052;
  --color-primary-soft: #f3e7ea;
  --color-background: #f7f3f4;
  --color-surface: #ffffff;
  --color-text: #272124;
  --color-subtext: #756a6e;
  --color-border: #e5dadd;
  --color-error: #b42332;
  --color-error-background: #fff1f2;
  --radius: 16px;
  --radius-small: 10px;
  --shadow: 0 4px 16px rgba(50, 35, 40, 0.08);
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
}

html {
  box-sizing: border-box;
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

body {
  min-height: 100%;
  margin: 0;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

#memberApp {
  width: 100%;
  max-width: 420px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  padding:
    max(var(--spacing-md), env(safe-area-inset-top))
    max(var(--spacing-md), env(safe-area-inset-right))
    max(var(--spacing-lg), env(safe-area-inset-bottom))
    max(var(--spacing-md), env(safe-area-inset-left));
}

.member-header {
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.member-header__eyebrow,
.section-heading__label {
  margin: 0;
  color: var(--color-primary);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.member-header h1 {
  margin: var(--spacing-xs) 0 0;
  color: var(--color-primary);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.status-message {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-surface);
  box-shadow: var(--shadow);
  text-align: center;
}

.loading-indicator {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: loading-spin 0.8s linear infinite;
}

.error-message {
  display: block;
  border-color: var(--color-error);
  background-color: var(--color-error-background);
  color: var(--color-error);
}

.link-description {
  margin: 0 0 var(--spacing-md);
  color: var(--color-subtext);
}

.form-field {
  margin-bottom: var(--spacing-md);
}

.form-field label,
.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

.form-field input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background-color: var(--color-surface);
  color: var(--color-text);
  font: inherit;
}

.form-field input:focus {
  border-color: var(--color-primary);
  outline: 2px solid var(--color-primary-soft);
  outline-offset: 1px;
}

.birthday-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-sm);
}

.birthday-fields label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--spacing-sm);
  align-items: center;
  margin: 0;
}

.form-error {
  margin: 0 0 var(--spacing-md);
  color: var(--color-error);
}

#linkSubmitButton {
  width: 100%;
  min-height: 48px;
  padding: 12px var(--spacing-md);
  border: 0;
  border-radius: var(--radius-small);
  background-color: var(--color-primary);
  color: #ffffff;
  font: inherit;
  font-weight: 700;
}

#linkSubmitButton:disabled {
  cursor: wait;
  opacity: 0.6;
}

.member-section {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-lg);
  border: 1px solid rgba(229, 218, 221, 0.7);
  border-radius: var(--radius);
  background-color: var(--color-surface);
  box-shadow: var(--shadow);
}

.section-heading {
  margin-bottom: var(--spacing-md);
}

.section-heading h2 {
  margin: var(--spacing-xs) 0 0;
  font-size: 1.125rem;
  line-height: 1.35;
}

.member-section dl {
  display: grid;
  gap: 0;
  margin: 0;
}

.member-section dl > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--spacing-md);
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.member-section dl > div:last-child {
  border-bottom: 0;
}

.member-section dt {
  color: var(--color-subtext);
}

.member-section dd {
  min-width: 0;
  margin: 0;
  font-weight: 700;
  text-align: right;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.current-point-card {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-md);
  border-radius: var(--radius-small);
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
  color: #ffffff;
  text-align: center;
}

.current-point-card__label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  opacity: 0.9;
}

.current-point-card__value {
  margin: var(--spacing-xs) 0 0;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

#currentPoint {
  font-size: clamp(2.5rem, 13vw, 3.6rem);
  font-weight: 700;
}

.point-unit {
  margin-left: var(--spacing-xs);
  font-size: 1rem;
  font-weight: 700;
}

.point-unit--small {
  color: var(--color-subtext);
  font-size: 0.75rem;
}

.point-summary {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-sm) !important;
}

.point-summary > div {
  display: block !important;
  padding: var(--spacing-md) !important;
  border: 0 !important;
  border-radius: var(--radius-small);
  background-color: var(--color-background);
  text-align: center;
}

.point-summary dt,
.point-summary dd {
  text-align: center;
}

.point-summary dd {
  margin-top: var(--spacing-xs);
  color: var(--color-primary);
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
}

.empty-message {
  margin: 0;
  padding: var(--spacing-md);
  border-radius: var(--radius-small);
  background-color: var(--color-background);
  color: var(--color-subtext);
  text-align: center;
}

.history-table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  min-width: 360px;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 0.82rem;
}

caption {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

th {
  padding: var(--spacing-sm);
  background-color: var(--color-background);
  color: var(--color-subtext);
  font-weight: 600;
  text-align: left;
}

th:first-child {
  width: 28%;
}

th:nth-child(2) {
  width: 15%;
}

th:nth-child(3) {
  width: 22%;
}

td {
  padding: 10px var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  overflow-wrap: anywhere;
  vertical-align: top;
}

td:nth-child(3) {
  color: var(--color-primary);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.member-footer {
  padding: var(--spacing-md) 0;
  color: var(--color-subtext);
  font-size: 0.75rem;
  text-align: center;
}

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

@media (prefers-reduced-motion: reduce) {
  .loading-indicator {
    animation: none;
  }
}

@media (min-width: 480px) {
  #memberApp {
    padding-right: var(--spacing-lg);
    padding-left: var(--spacing-lg);
  }

  .member-section {
    margin-bottom: var(--spacing-lg);
  }
}