:root {
  --color-primary: #ff7a00;
  --color-primary-dark: #cc6200;
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --transition: 0.2s ease;
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    'Helvetica Neue', sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-text);
  scroll-padding-top: 96px;
}

button,
input,
textarea {
  font-family: inherit;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 16px 16px 32px;
  gap: 16px;
  max-width: 480px;
  margin: 0 auto;
}

.app-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 5;
  padding: 8px 0 10px;
}

.app-header h1 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
}

.role-control {
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.role-select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 1rem;
  background: #fff;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background: #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 4px;
  gap: 4px;
  position: sticky;
  top: 76px;
  z-index: 4;
}

.tab-button {
  border: none;
  border-radius: calc(var(--radius-lg) - 4px);
  padding: 12px;
  font-size: 1rem;
  font-weight: 600;
  background: transparent;
  transition: background var(--transition), color var(--transition),
    transform var(--transition);
}

.tab-button.active,
.tab-button[aria-selected='true'] {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(255, 122, 0, 0.25);
}

.tab-button:active {
  transform: scale(0.98);
}

.tab-button.disabled {
  opacity: 0.45;
  pointer-events: none;
}

main {
  flex: 1;
}

.tab-panel.hidden {
  display: none;
}

.list-header {
  align-items: baseline;
  justify-content: space-between;
}

.list-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

.hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.queue-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.history-section {
  margin-top: 32px;
}

.queue-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
}

.history-entry {
  background: #f1f5f9;
  border-color: #cbd5f5;
  color: var(--color-muted);
  box-shadow: none;
}

.history-entry .party-size {
  color: #475569;
}

.history-entry .option-tag {
  background: rgba(148, 163, 184, 0.2);
  color: #475569;
}

.history-entry .memo-text {
  color: inherit;
}

.history-entry .meta {
  color: inherit;
}

.history-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.queue-edit-button {
  border: none;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  font-size: 1.05rem;
  cursor: pointer;
  padding: 4px;
  color: var(--color-muted);
  transition: color var(--transition), transform var(--transition);
}

.queue-edit-button:hover,
.queue-edit-button:focus {
  color: var(--color-primary);
}

.queue-edit-button:active {
  transform: scale(0.9);
}

.queue-edit-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.queue-edit-button i {
  pointer-events: none;
}

.party-size {
  font-size: 1.5rem;
  font-weight: 700;
}

.options {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.8rem;
}

.option-tag {
  padding: 4px 8px;
  background: rgba(255, 122, 0, 0.12);
  color: var(--color-primary);
  border-radius: 999px;
  font-weight: 600;
}

.meta {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.memo-text {
  margin: 0;
  font-weight: bold;
  color: #b45309;
}

.allergy-text {
  color: #b45309;
  font-weight: 600;
}

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

.register-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-bottom: calc(140px + env(safe-area-inset-bottom));
}

.form-actions {
  bottom: env(safe-area-inset-bottom, 0px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 8px;
  background: linear-gradient(
    180deg,
    rgba(248, 250, 252, 0) 0%,
    var(--color-surface) 32%,
    var(--color-surface) 100%
  );
  z-index: 1;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

fieldset {
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

legend {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 5px;
}

.details-toggle {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  font-weight: 700;
  cursor: pointer;
  transition: border var(--transition), box-shadow var(--transition),
    transform var(--transition), background var(--transition);
}

.details-toggle.expanded {
  background: #fff7ed;
  border-color: var(--color-primary);
  box-shadow: 0 6px 18px rgba(255, 122, 0, 0.18);
}

.details-toggle i {
  transition: transform var(--transition);
}

.details-toggle.expanded i {
  transform: rotate(180deg);
}

.details-content {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
  scroll-margin-bottom: 160px;
}

.toggle-group {
  display: grid;
  gap: 8px;
}

.party-size-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: minmax(48px, auto);
}

.not-arrived-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.toggle,
.switch,
.secondary-button {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  background: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition),
    border var(--transition), box-shadow var(--transition), transform var(--transition);
}

.toggle:active,
.switch:active,
.secondary-button:active {
  transform: scale(0.97);
}

.toggle.active,
.switch.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 6px 18px rgba(255, 122, 0, 0.3);
}

.switch-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.primary-button,
.seated-button {
  border: none;
  border-radius: var(--radius-lg);
  padding: 16px;
  font-size: 1.05rem;
  font-weight: 700;
  background: var(--color-primary);
  color: #ffffff;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition),
    box-shadow var(--transition);
  box-shadow: 0 8px 22px rgba(255, 122, 0, 0.35);
}

.primary-button:active,
.seated-button:active {
  transform: scale(0.97);
}

.primary-button:disabled,
.seated-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

.seated-button {
  padding: 10px 14px;
  font-size: 0.95rem;
}

.restore-button {
  background: #e2e8f0;
  color: #1e293b;
  box-shadow: 0 4px 12px rgba(148, 163, 184, 0.2);
}

.restore-button:hover,
.restore-button:focus-visible {
  background: #cbd5f5;
}

.danger-button {
  border: none;
  border-radius: var(--radius-lg);
  padding: 14px;
  font-size: 1rem;
  font-weight: 700;
  background: #dc2626;
  color: #ffffff;
  cursor: pointer;
  width: 100%;
  outline: none;
  transition: background var(--transition), transform var(--transition),
    opacity var(--transition), box-shadow var(--transition);
  box-shadow: 0 6px 18px rgba(220, 38, 38, 0.25);
}

.danger-button:hover,
.danger-button:focus-visible {
  background: #b91c1c;
}

.danger-button:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.6);
  outline-offset: 2px;
}

.danger-button:active {
  transform: scale(0.97);
}

.danger-button:disabled {
  background: #fca5a5;
  color: #ffffff;
  cursor: not-allowed;
  opacity: 0.75;
  box-shadow: none;
}

.clear-history-button {
  margin-top: 24px;
}

.memo-label {
  font-weight: 600;
}

.memo {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 1rem;
}

.memo {
  resize: vertical;
  min-height: 96px;
}

.memo:focus {
  outline: 2px solid rgba(255, 122, 0, 0.35);
}

.allergy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.allergy-option {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  transition: border var(--transition), box-shadow var(--transition),
    transform var(--transition), background var(--transition);
}

.allergy-option:hover {
  border-color: var(--color-primary);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
  transform: translateY(-1px);
}

.allergy-option:active {
  transform: translateY(0);
}

.allergy-option input[type="checkbox"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.allergy-check {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  transition: border var(--transition), background var(--transition),
    box-shadow var(--transition);
}

.allergy-check::after {
  content: "";
  width: 10px;
  height: 6px;
  border: 2px solid transparent;
  border-left-color: #ffffff;
  border-bottom-color: #ffffff;
  transform: rotate(-45deg) scale(0.6);
  transition: transform var(--transition), opacity var(--transition);
  opacity: 0;
}

.allergy-option input[type="checkbox"]:focus-visible + .allergy-check {
  box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.25);
}

.allergy-option input[type="checkbox"]:checked + .allergy-check {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.allergy-option input[type="checkbox"]:checked + .allergy-check::after {
  opacity: 1;
  transform: rotate(-45deg) scale(1);
}

.allergy-name {
  font-weight: 600;
}

.secondary-button {
  background: var(--color-surface);
  font-size: 0.95rem;
}

.secondary-button:hover,
.secondary-button:focus {
  background: rgba(15, 23, 42, 0.05);
}

.hidden {
  display: none !important;
}

.not-arrived-hint {
  margin: -4px 0 0;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.number-picker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  display: grid;
  place-items: flex-end center;
  padding: 24px;
  z-index: 10;
}

.number-picker-overlay.hidden {
  display: none;
}

.number-picker {
  width: min(100%, 420px);
  background: #ffffff;
  border-radius: 24px 24px 0 0;
  padding: 20px 20px 32px;
  box-shadow: 0 -12px 32px rgba(15, 23, 42, 0.2);
  max-height: 80vh;
  overflow-y: auto;
}

.number-picker-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.number-picker-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.icon-button {
  border: none;
  background: transparent;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
}

.number-picker-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.number-picker-option {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 0;
  background: var(--color-surface);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  transition: background var(--transition), color var(--transition),
    border var(--transition), transform var(--transition);
}

.number-picker-option:active {
  transform: scale(0.97);
}

.number-picker-option:hover,
.number-picker-option:focus {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: rgba(15, 23, 42, 0.9);
  color: #fff;
  padding: 14px 20px;
  border-radius: 999px;
  font-weight: 600;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 20;
  pointer-events: none;
  max-width: 90vw;
  white-space: nowrap;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

@media (min-width: 768px) {
  .app {
    padding: 32px;
    max-width: 80%;
  }

  .queue-item {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .queue-item > *:first-child {
    flex: 1;
  }
}