:root {
  color-scheme: dark;
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e8edf4;
  --muted: #9aa8bc;
  --accent: #4a9eff;
  --accent-hover: #5cabff;
  --accent-dim: #2a5a8a;
  --success: #3dd68c;
  --danger: #f87171;
  --on-accent: #fff;
  --card-active-bg: #152030;
  --overlay: rgba(0, 0, 0, 0.55);
  --notice-bg: rgba(154, 168, 188, 0.12);
  --tagline-bg: rgba(61, 214, 140, 0.12);
  --tagline-border: rgba(61, 214, 140, 0.45);
  --fab-shadow: 0 4px 16px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(74, 158, 255, 0.25);
  --fab-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.4), 0 3px 8px rgba(74, 158, 255, 0.35);
  --focus-ring: #fff;
  --radius: 8px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f6f9;
  --surface: #ffffff;
  --border: #d5dde8;
  --text: #1a2332;
  --muted: #5c6b80;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-dim: #93c5fd;
  --card-active-bg: #eef4ff;
  --overlay: rgba(15, 20, 25, 0.45);
  --notice-bg: rgba(92, 107, 128, 0.1);
  --tagline-bg: rgba(61, 214, 140, 0.14);
  --tagline-border: rgba(34, 160, 99, 0.45);
  --fab-shadow: 0 4px 16px rgba(15, 20, 25, 0.15), 0 2px 6px rgba(37, 99, 235, 0.2);
  --fab-shadow-hover: 0 6px 20px rgba(15, 20, 25, 0.2), 0 3px 8px rgba(37, 99, 235, 0.28);
  --focus-ring: #2563eb;
}

@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] {
    color-scheme: light;
    --bg: #f4f6f9;
    --surface: #ffffff;
    --border: #d5dde8;
    --text: #1a2332;
    --muted: #5c6b80;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-dim: #93c5fd;
    --card-active-bg: #eef4ff;
    --overlay: rgba(15, 20, 25, 0.45);
    --notice-bg: rgba(92, 107, 128, 0.1);
    --tagline-bg: rgba(61, 214, 140, 0.14);
    --tagline-border: rgba(34, 160, 99, 0.45);
    --fab-shadow: 0 4px 16px rgba(15, 20, 25, 0.15), 0 2px 6px rgba(37, 99, 235, 0.2);
    --fab-shadow-hover: 0 6px 20px rgba(15, 20, 25, 0.2), 0 3px 8px rgba(37, 99, 235, 0.28);
    --focus-ring: #2563eb;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.page {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 16px 96px;
}

.header-bar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.header-text {
  min-width: 0;
}

.theme-control {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  flex-shrink: 0;
}

.theme-icon-svg {
  width: 18px;
  height: 18px;
  display: block;
}

.theme-select {
  font-size: 0.8125rem;
  padding: 6px 28px 6px 10px;
  min-width: 5.5rem;
}

.header h1 {
  margin: 0 0 4px;
  font-size: 1.75rem;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 20px;
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.hint {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 8px 0 0;
}

.controls label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--muted);
}

select {
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.attendance-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.pill-btn {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 0.875rem;
}

.pill-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.stat {
  padding: 10px 12px;
  background: var(--bg);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 600;
}

.stat-value.positive {
  color: var(--success);
}

.stat-value.negative {
  color: var(--danger);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 2px;
}

.callout {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.callout strong {
  display: block;
  margin-bottom: 4px;
}

.progress-wrap {
  margin-top: 8px;
}

.progress-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.progress-bar {
  height: 12px;
  background: var(--bg);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  border: 1px solid var(--border);
}

.progress-seg {
  height: 100%;
  transition: width 0.2s ease;
}

.progress-seg.mvp {
  background: var(--accent);
}

.progress-seg.registry {
  background: var(--success);
}

.gift-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.gift-grid--3 {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.gift-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--bg);
  cursor: pointer;
  transition: border-color 0.15s;
}

.gift-card.enabled {
  border-color: var(--accent);
  background: var(--card-active-bg);
}

.gift-card.locked {
  opacity: 0.72;
}

.gift-card.locked .gift-amount {
  color: var(--muted);
}

.gift-card--readonly {
  cursor: pointer;
}

.gift-card--variable {
  cursor: default;
}

.gift-card-variable {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.gift-variable-label {
  font-weight: 600;
  color: var(--muted);
}

.gift-variable-input,
.modal-variable-amount input {
  width: 72px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
}

.gift-variable-input:focus,
.modal-variable-amount input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.gift-variable-input-row,
.modal-variable-amount .gift-variable-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 120px;
}

.gift-variable-prefix {
  font-weight: 600;
  color: var(--muted);
}

.gift-gap-hint {
  margin: 6px 0 0;
  font-size: 0.8125rem;
  color: var(--accent);
  line-height: 1.35;
}

.modal-variable-amount {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.modal-variable-amount label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 8px;
}

.gift-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.gift-card h3 {
  margin: 0 0 4px;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.gift-emoji {
  font-size: 1.25rem;
  line-height: 1;
}

.gift-amount {
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 4px;
  white-space: nowrap;
}

.gift-tagline {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0;
}

.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.toggle-wrap input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.toggle-wrap--disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.toggle-wrap--disabled input {
  cursor: not-allowed;
}

.collapsible summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
}

.collapsible summary::-webkit-details-marker {
  display: none;
}

.caret {
  display: inline-block;
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 6px solid var(--muted);
  transition: transform 0.15s ease;
  flex-shrink: 0;
}

.collapsible[open] .caret {
  transform: rotate(90deg);
}

.collapsible[open] summary {
  margin-bottom: 8px;
}

.collapsible-desc {
  margin: 0 0 12px;
}

dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  background: var(--surface);
  color: var(--text);
  max-width: 520px;
  width: calc(100% - 32px);
}

dialog::backdrop {
  background: var(--overlay);
}

.modal-inner {
  padding: 0;
  margin: 0;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  margin: 0;
  font-size: 1rem;
  padding-right: 12px;
}

.modal-tab-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px 0;
}

.modal-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.modal-amount {
  font-weight: 600;
  color: var(--accent);
  font-size: 1.375rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.cart-fab {
  position: fixed;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 40;
  width: 56px;
  height: 56px;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--fab-shadow);
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.cart-fab:hover {
  background: var(--accent-hover);
  box-shadow: var(--fab-shadow-hover);
  transform: translateY(-1px);
}

.cart-fab:active {
  transform: translateY(0);
}

.cart-fab:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

.cart-fab-icon {
  width: 24px;
  height: 24px;
  display: block;
  flex-shrink: 0;
}

.cart-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--bg);
  border: 2px solid var(--accent);
  color: var(--text);
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 18px;
  text-align: center;
}

.cart-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.cart-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}

.cart-list li:last-child {
  border-bottom: none;
}

.cart-list li span:last-child {
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

.cart-extra-cash {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.cart-extra-cash label {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 4px;
}

.cart-extra-cash > .hint {
  margin: 0 0 10px;
  font-size: 0.8125rem;
}

.cart-extra-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 160px;
}

.cart-extra-prefix {
  font-weight: 600;
  color: var(--text-muted);
}

.cart-extra-input-row input {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
}

.cart-extra-input-row input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.cart-extra-hint {
  margin-top: 8px;
  color: var(--accent);
  font-size: 0.8125rem;
}

.cart-perk-group {
  margin-bottom: 16px;
}

.cart-perk-group:last-child {
  margin-bottom: 0;
}

.cart-perk-group h4 {
  margin: 0 0 8px;
  font-size: 0.875rem;
  font-weight: 600;
}

.cart-perk-group ul {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

.cart-perk-group li {
  margin-bottom: 4px;
}

.cart-tier-note {
  margin: 0 0 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--surface-2, rgba(127, 127, 127, 0.08));
  font-size: 0.875rem;
  line-height: 1.45;
}

.cart-global-perks {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.cart-global-perks h4,
.cart-perk-groups-title {
  margin: 0 0 10px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.cart-global-perks ul {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

.cart-global-perk-label {
  font-weight: 600;
}

.cart-perk-groups-title {
  margin-top: 4px;
}

.modal-tabs button {
  padding: 6px 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
}

.modal-tabs button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

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

.modal-body.hidden {
  display: none;
}

.modal-body p {
  margin: 0 0 12px;
}

.modal-unlock-notice {
  margin: 0 0 12px;
  padding: 10px 12px;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--muted);
  background: var(--notice-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.modal-tagline {
  margin: 0 0 14px;
  padding: 10px 12px;
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.45;
  color: var(--success);
  background: var(--tagline-bg);
  border: 1px solid var(--tagline-border);
  border-radius: 6px;
}

.modal-benefits-label {
  margin: 16px 0 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.modal-benefits {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

.modal-benefits li {
  margin-bottom: 4px;
}

.modal-benefits li:last-child {
  margin-bottom: 0;
}

.modal-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.modal-body th,
.modal-body td {
  text-align: left;
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
}

.modal-body td:last-child {
  text-align: right;
}

.modal-footer {
  padding: 12px 20px 16px;
  border-top: 1px solid var(--border);
  text-align: right;
}

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

.btn-clear {
  color: var(--muted);
}

.btn-clear:not(:disabled):hover {
  color: var(--danger);
  border-color: var(--danger);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn {
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.error {
  color: var(--danger);
  padding: 24px;
}