:root {
  color-scheme: dark;
  --bg: #0f172a;
  --bg-top: #1e293b;
  --panel: #111827;
  --panel-2: #1f2937;
  --accent: #38bdf8;
  --accent-2: #fb7185;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --surface-gradient-start: rgba(17, 24, 39, 0.96);
  --surface-gradient-end: rgba(15, 23, 42, 0.96);
  --surface-border: rgba(56, 189, 248, 0.2);
  --surface-shadow: 0 10px 28px rgba(0, 0, 0, 0.24);
  --card-overlay: rgba(31, 41, 55, 0.9);
  --soft-panel: rgba(15, 23, 42, 0.5);
  --soft-border: rgba(148, 163, 184, 0.22);
  --field-border: rgba(148, 163, 184, 0.3);
  --ghost-bg: rgba(148, 163, 184, 0.2);
  --ghost-border: rgba(148, 163, 184, 0.35);
  --keypad-bg: rgba(148, 163, 184, 0.16);
  --keypad-border: rgba(148, 163, 184, 0.3);
  --keypad-accent-bg: rgba(56, 189, 248, 0.18);
  --keypad-accent-border: rgba(56, 189, 248, 0.35);
  --ad-bg: rgba(15, 23, 42, 0.36);
  --ad-border: rgba(148, 163, 184, 0.32);
  --ad-muted: rgba(148, 163, 184, 0.86);
  --overlay-bg: rgba(2, 6, 23, 0.76);
  --badge-bg: rgba(56, 189, 248, 0.16);
}

:root[data-theme='light'] {
  color-scheme: light;
  --bg: #dfe8f1;
  --bg-top: #cfdbe8;
  --panel: #eef3f8;
  --panel-2: #e5ecf4;
  --accent: #0284c7;
  --accent-2: #db2777;
  --text: #1f2937;
  --muted: #5f6b7a;
  --surface-gradient-start: rgba(245, 248, 252, 0.97);
  --surface-gradient-end: rgba(232, 239, 247, 0.97);
  --surface-border: rgba(2, 132, 199, 0.22);
  --surface-shadow: 0 10px 24px rgba(15, 23, 42, 0.1);
  --card-overlay: rgba(228, 236, 245, 0.92);
  --soft-panel: rgba(224, 232, 242, 0.85);
  --soft-border: rgba(120, 136, 158, 0.32);
  --field-border: rgba(120, 136, 158, 0.34);
  --ghost-bg: rgba(120, 136, 158, 0.16);
  --ghost-border: rgba(120, 136, 158, 0.32);
  --keypad-bg: rgba(120, 136, 158, 0.14);
  --keypad-border: rgba(120, 136, 158, 0.3);
  --keypad-accent-bg: rgba(2, 132, 199, 0.14);
  --keypad-accent-border: rgba(2, 132, 199, 0.3);
  --ad-bg: rgba(224, 232, 242, 0.78);
  --ad-border: rgba(120, 136, 158, 0.34);
  --ad-muted: rgba(95, 107, 122, 0.92);
  --overlay-bg: rgba(77, 94, 118, 0.44);
  --badge-bg: rgba(2, 132, 199, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  -webkit-text-size-adjust: 100%;
  background: radial-gradient(circle at top, var(--bg-top), var(--bg));
  color: var(--text);
}

.app-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(12px, 3.5vw, 24px);
}

.topbar,
.setup-card,
.controls-card,
.history-card,
.score-card,
.summary-card {
  background: linear-gradient(135deg, var(--surface-gradient-start), var(--surface-gradient-end));
  border: 1px solid var(--surface-border);
  border-radius: 18px;
  padding: 18px;
  margin-bottom: 14px;
  box-shadow: var(--surface-shadow);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-left: auto;
}

.topbar-help {
  white-space: nowrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  font-size: 2rem;
  line-height: 1;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25));
}

.brand-copy {
  min-width: 0;
}

.brand-name {
  margin: 0;
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-tagline {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.score-choice,
.player-name-row label,
.entry-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.entry-field input {
  font-size: 1.05rem;
}

.score-keypad {
  display: grid;
  grid-template-columns: repeat(3, minmax(54px, 1fr));
  gap: 8px;
  margin-top: 10px;
  margin-bottom: 6px;
}

.keypad-btn {
  padding: 10px 8px;
  background: var(--keypad-bg);
  border: 1px solid var(--keypad-border);
  color: var(--text);
  font-weight: 700;
  min-height: 46px;
}

.keypad-zero {
  grid-column: 2;
}

.keypad-delete {
  background: var(--keypad-accent-bg);
  border-color: var(--keypad-accent-border);
}

.keypad-btn:hover {
  background: rgba(56, 189, 248, 0.2);
}

.action-stack {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.action-card {
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  padding: 12px;
  background: var(--soft-panel);
}

.action-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.score-choice span,
.player-name-row span,
.entry-field span {
  color: var(--muted);
  font-size: 0.9rem;
}

input,
select,
button {
  border-radius: 10px;
  border: 1px solid var(--field-border);
  font: inherit;
}

input,
select {
  padding: 11px 12px;
  background: var(--panel-2);
  color: var(--text);
}

button {
  padding: 11px 16px;
  min-height: 44px;
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: white;
  cursor: pointer;
  font-weight: 700;
}

textarea {
  padding: 11px 12px;
  background: var(--panel-2);
  color: var(--text);
  border-radius: 10px;
  border: 1px solid var(--field-border);
  font: inherit;
}
button.secondary {
  background: linear-gradient(135deg, var(--accent-2), #be185d);
}

button.ghost {
  background: var(--ghost-bg);
  border-color: var(--ghost-border);
  color: var(--text);
}

#bustButton {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}
#recordScoreButton {
  background: linear-gradient(135deg, var(--accent), #2563eb);
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.primary-actions {
  margin-top: 14px;
  display: flex;
  gap: 10px;
  flex-wrap: nowrap;
}

.primary-actions > * {
  flex: 1;
}

.session-actions {
  margin-top: 8px;
}

.player-name-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 8px;
  align-items: end;
}

.player-swap-control {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 2px;
}

.swap-inline-btn {
  width: 42px;
  min-width: 42px;
  min-height: 42px;
  height: 42px;
  padding: 0;
  border-radius: 999px;
  font-size: 1.05rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.setup-help {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.game-options-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

.setup-validation {
  margin: 0 0 12px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(251, 113, 133, 0.35);
  background: rgba(244, 63, 94, 0.12);
  color: #fecaca;
  font-size: 0.92rem;
}

.setup-context-hint {
  margin: -4px 0 12px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(56, 189, 248, 0.26);
  background: rgba(56, 189, 248, 0.08);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.35;
}

.setup-match-summary {
  margin: 0 0 10px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--soft-border);
  background: var(--soft-panel);
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.35;
}

.advanced-setup-panel {
  margin-bottom: 12px;
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  background: var(--soft-panel);
  overflow: hidden;
}

.advanced-setup-summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 12px;
  color: #cbd5e1;
  font-size: 0.92rem;
}

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

.advanced-setup-content {
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  padding: 12px;
}

.advanced-options-row {
  margin-bottom: 8px;
}

input.invalid {
  border-color: rgba(251, 113, 133, 0.7);
  box-shadow: 0 0 0 1px rgba(251, 113, 133, 0.35);
}

.profiles-manager {
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  background: var(--soft-panel);
  margin-bottom: 12px;
  overflow: hidden;
}

.profiles-manager-summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: #cbd5e1;
  font-size: 0.92rem;
}

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

.profiles-count {
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 999px;
  padding: 2px 8px;
}

#profilesManager {
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  padding: 12px;
}

.profiles-manager-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.profiles-manager-header h3 {
  margin: 0;
  font-size: 1rem;
}

.profiles-manager-help,
.profiles-empty-state {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.profiles-backup-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.profiles-backup-row button {
  min-height: 38px;
}

.profiles-manager-message {
  margin: 8px 0 0;
  font-size: 0.9rem;
  color: #bfdbfe;
}

.profiles-manager-message.error {
  color: #fecaca;
}

.profiles-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.profile-list-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  border: 1px solid var(--soft-border);
  border-radius: 10px;
  padding: 8px 10px;
  background: var(--card-overlay);
}

.profile-name-block {
  width: 100%;
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.profile-name-text {
  overflow-wrap: anywhere;
}

.profile-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.profile-actions button {
  min-height: 36px;
}

.profile-inline-editor {
  display: flex;
  flex: 1;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.profile-rename-input {
  flex: 1;
  min-width: 120px;
  padding: 7px 8px;
}

.profile-inline-confirm {
  width: 100%;
  margin-top: 6px;
  border: 1px solid rgba(251, 113, 133, 0.35);
  border-radius: 8px;
  padding: 8px;
  background: rgba(244, 63, 94, 0.12);
}

.profile-inline-confirm span {
  color: #fecaca;
  font-size: 0.9rem;
}

.profile-inline-confirm .button-row {
  margin-top: 8px;
}

.profile-remove {
  padding: 6px 10px;
  font-size: 0.85rem;
}

.profiles-clear-confirm {
  margin-top: 10px;
  padding: 10px;
  border: 1px solid rgba(251, 113, 133, 0.35);
  border-radius: 10px;
  background: rgba(244, 63, 94, 0.12);
}

.profiles-clear-confirm span {
  color: #fecaca;
  font-size: 0.92rem;
}

.ad-slot {
  margin-top: 12px;
  border: 1px dashed var(--ad-border);
  border-radius: 10px;
  background: var(--ad-bg);
  padding: 8px;
}

.ad-slot-header {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ad-muted);
  margin-bottom: 6px;
}

.ad-slot-body {
  width: 100%;
  min-height: 56px;
  max-height: min(44vh, 360px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow: auto;
}

.ad-slot-body > * {
  max-width: 100%;
}

.ad-slot-body .adsbygoogle {
  display: block;
  width: 100%;
}

.ad-slot-body img,
.ad-slot-body iframe,
.ad-slot-body video,
.ad-slot-body canvas {
  max-width: 100%;
  height: auto;
  border: 0;
}

.ad-slot-placeholder {
  color: var(--ad-muted);
  font-size: 0.82rem;
}

.ad-slot-inplay {
  margin-top: 14px;
}

.ad-slot-setup .ad-slot-body,
.ad-slot-inplay .ad-slot-body {
  max-height: min(42vh, 340px);
}

.ad-slot-summary {
  margin-top: 10px;
}

.ad-slot-starter {
  margin-top: 12px;
}

.ad-slot-starter .ad-slot-body {
  max-height: min(34vh, 300px);
}

.scoreboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

.score-card {
  background: linear-gradient(135deg, var(--surface-gradient-start), var(--surface-gradient-end));
  border: 1px solid var(--soft-border);
  border-radius: 16px;
  padding: 16px;
}

.score-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.6);
  transform: translateY(-1px);
}

.score-card.inactive {
  opacity: 0.86;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.badge {
  font-size: 0.75rem;
  border-radius: 999px;
  padding: 4px 8px;
  background: var(--badge-bg);
  color: var(--accent);
}

.stats-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.stat-pill {
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--ghost-bg);
  color: var(--text);
  font-size: 0.85rem;
}

.score-value {
  font-size: 3rem;
  font-weight: 700;
  margin-top: 8px;
}

.turn-banner {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fde68a;
  letter-spacing: 0.02em;
}

.system-hint {
  margin-top: 8px;
  padding: 8px 10px;
  background: rgba(248, 113, 113, 0.16);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: #fecaca;
  border-radius: 10px;
  font-size: 0.92rem;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.16);
  animation: hintPop 180ms ease-out;
}

.session-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.95rem;
}

.checkout-hint {
  color: #bfdbfe;
  background: rgba(37, 99, 235, 0.14);
  border: 1px solid rgba(96, 165, 250, 0.26);
  padding: 10px 12px;
  border-radius: 10px;
}

.hidden {
  display: none;
}

.session-shell {
  display: block;
  animation: fadeIn 180ms ease-out;
}

.session-shell.hidden,
.setup-card.hidden {
  display: none;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes hintPop {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.session-only.hidden {
  display: none;
}

.checkout-label {
  font-weight: 700;
  margin-bottom: 6px;
}

.checkout-list {
  list-style: disc;
  margin: 0;
  padding-left: 20px;
}

.checkout-item {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.checkout-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #cbd5e1;
  background: rgba(148, 163, 184, 0.16);
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 999px;
  padding: 3px 7px;
}

.checkout-item.popular {
  color: #fef08a;
}

.checkout-list li {
  margin-bottom: 4px;
}

.reset-confirm {
  margin-top: 12px;
  padding: 12px;
  border-radius: 10px;
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(251, 113, 133, 0.35);
}

.checkout-darts-row {
  align-items: center;
}

.field-label {
  color: var(--muted);
  font-size: 0.88rem;
}

.checkout-darts-row input {
  width: 110px;
}

.history-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.summary-card {
  background: linear-gradient(135deg, var(--surface-gradient-start), var(--surface-gradient-end));
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: var(--surface-shadow);
  width: min(100%, 860px);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}

.starter-modal {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
  background: var(--overlay-bg);
  backdrop-filter: blur(6px);
  overflow-y: auto;
}

.starter-modal.hidden,
.summary-overlay.hidden {
  display: none;
}

.starter-modal-card {
  width: min(100%, 360px);
  background: linear-gradient(135deg, var(--surface-gradient-start), var(--surface-gradient-end));
  border: 1px solid var(--surface-border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: var(--surface-shadow);
  margin-top: 8px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}

.starter-modal-card h3 {
  margin-bottom: 6px;
}

.starter-modal-card p {
  color: var(--muted);
  margin-bottom: 16px;
}

.round-advance-warning {
  margin: 0 0 14px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(251, 113, 133, 0.35);
  background: rgba(244, 63, 94, 0.12);
  color: #fecaca;
  font-size: 0.9rem;
  line-height: 1.35;
}

.help-modal-card {
  width: min(100%, 500px);
}

.help-section {
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  background: var(--soft-panel);
  overflow: hidden;
  margin-bottom: 10px;
}

.help-section:last-of-type {
  margin-bottom: 16px;
}

.help-section-summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 14px;
  font-weight: 700;
  color: var(--text);
}

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

.help-section[open] .help-section-summary {
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
}

.help-section-body {
  padding: 12px 14px 4px;
}

.help-section-body .help-list {
  margin: 0 0 12px;
}

.help-list {
  margin: 0 0 14px;
  padding-left: 20px;
  display: grid;
  gap: 8px;
  color: var(--muted);
  line-height: 1.4;
}

.help-list li {
  margin: 0;
}

.help-list strong {
  color: var(--text);
}

.starter-actions {
  justify-content: center;
  margin-top: 8px;
}

.starter-modal-card .ad-slot {
  margin-bottom: 0;
}

.summary-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
  background: var(--overlay-bg);
  backdrop-filter: blur(6px);
  overflow-y: auto;
}

.summary-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 16px;
  position: sticky;
  bottom: 0;
  padding-top: 10px;
  background: linear-gradient(180deg, transparent, var(--surface-gradient-end) 35%);
}

.summary-session-stats {
  margin-bottom: 12px;
}

.ad-slot-summary .ad-slot-body {
  max-height: min(38vh, 340px);
  overflow: auto;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.summary-panel {
  background: var(--card-overlay);
  border-radius: 12px;
  padding: 12px;
}

.summary-panel h4 {
  margin-top: 0;
}

.summary-panel p {
  margin: 0 0 8px;
  color: var(--text);
}

.history-card li {
  background: var(--card-overlay);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--text);
  font-size: 0.95rem;
}

.app-footer {
  margin-top: 8px;
  margin-bottom: 4px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--soft-border);
  background: var(--soft-panel);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.app-footer-meta {
  min-width: 0;
}

.app-footer-title {
  margin: 0;
  color: var(--text);
  font-size: 0.92rem;
}

.app-footer-copy {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.app-footer-warning {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.theme-toggle {
  width: 36px;
  min-width: 36px;
  min-height: 36px;
  height: 36px;
  padding: 0;
  border-radius: 999px;
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

body.modal-open {
  overflow: hidden;
}

.storage-warning-overlay {
  position: fixed;
  inset: 0;
  z-index: 1300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(7, 10, 19, 0.82);
  backdrop-filter: blur(4px);
}

.storage-warning-overlay.hidden {
  display: none;
}

.storage-warning-card {
  width: min(100%, 560px);
  padding: 18px;
  border-radius: 14px;
  border: 1px solid rgba(251, 113, 133, 0.42);
  background: linear-gradient(135deg, var(--surface-gradient-start), var(--surface-gradient-end));
  box-shadow: var(--surface-shadow);
}

.storage-warning-card h3 {
  margin-bottom: 10px;
  color: #fecaca;
}

.storage-warning-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.storage-warning-card p + p {
  margin-top: 8px;
}

.storage-warning-card strong {
  color: var(--text);
}

.storage-warning-card .starter-actions {
  justify-content: flex-end;
  margin-top: 14px;
}

@media (max-width: 640px) {
  .app-shell {
    padding: 12px;
  }

  .topbar,
  .setup-card,
  .controls-card,
  .history-card,
  .score-card,
  .summary-card {
    border-radius: 14px;
    padding: 14px;
    margin-bottom: 10px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-actions {
    justify-content: flex-end;
  }

  .player-name-row,
  .game-options-row,
  .scoreboard,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .player-swap-control {
    align-items: center;
    padding: 0;
  }

  .profiles-manager-header,
  .profiles-manager-summary,
  .card-header {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .profiles-backup-row button {
    width: 100%;
  }

  .score-value {
    font-size: clamp(2.2rem, 11vw, 2.8rem);
  }

  .entry-field input,
  input,
  select,
  button {
    font-size: 0.98rem;
  }

  .primary-actions,
  .session-actions,
  .summary-actions {
    flex-wrap: wrap;
  }

  .primary-actions > *,
  .session-actions > *,
  .summary-actions > * {
    flex: 1 1 calc(50% - 8px);
    min-width: 130px;
  }

  .score-keypad {
    gap: 10px;
  }

  .keypad-btn {
    min-height: 52px;
    font-size: 1.05rem;
  }

  .storage-warning-overlay {
    align-items: flex-start;
    padding: 10px;
    overflow-y: auto;
  }

  .storage-warning-card {
    width: 100%;
    margin-top: 8px;
    padding: 14px;
  }

  .storage-warning-card .starter-actions {
    justify-content: stretch;
  }

  .storage-warning-card .starter-actions button {
    width: 100%;
  }

  .profile-name-block,
  .profile-inline-editor,
  .profile-actions {
    align-items: stretch;
  }

  .profile-name-block,
  .profile-actions {
    flex-direction: column;
  }

  .profile-actions button,
  .profile-inline-editor button {
    width: 100%;
  }

  .profile-rename-input {
    min-width: 0;
    width: 100%;
  }

  .checkout-darts-row {
    flex-wrap: wrap;
  }

  .checkout-darts-row input,
  .checkout-darts-row button {
    width: 100%;
  }

  .summary-overlay,
  .starter-modal {
    align-items: flex-start;
    padding: 10px;
    overflow-y: auto;
  }

  .summary-card,
  .starter-modal-card {
    width: 100%;
    margin-top: 8px;
  }

  .app-footer {
    padding: 10px 12px;
    align-items: flex-start;
  }

  .app-footer-title {
    font-size: 0.88rem;
  }

  .app-footer-copy {
    font-size: 0.76rem;
  }

  .app-footer-warning {
    font-size: 0.74rem;
  }

  .theme-toggle {
    margin-left: auto;
  }

  .ad-slot {
    padding: 7px;
  }

  .ad-slot-body {
    min-height: 52px;
  }
}

@media (max-width: 430px) {
  .brand-mark {
    font-size: 1.6rem;
  }

  .brand-name {
    font-size: 1.35rem;
  }

  .brand-tagline {
    font-size: 0.74rem;
  }

  .turn-banner {
    font-size: 0.98rem;
  }

  .stat-pill {
    font-size: 0.8rem;
  }

  .history-card li {
    font-size: 0.9rem;
  }
}

.summary-intro {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  padding: 12px;
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  background: var(--soft-panel);
}

.summary-intro > div:first-child {
  min-width: 0;
}

.summary-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.summary-recap {
  margin: 6px 0 0;
  color: var(--text);
  line-height: 1.5;
}

.summary-recap-actions {
  margin-top: 0;
  align-self: flex-start;
}

.summary-comparison {
  margin-bottom: 12px;
  padding: 12px;
  border: 1px solid var(--soft-border);
  border-radius: 12px;
  background: var(--soft-panel);
}

.summary-comparison-body {
  display: grid;
  gap: 12px;
}

.summary-comparison-row {
  display: grid;
  gap: 8px;
}

.summary-comparison-label {
  margin: 0;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 700;
}

.summary-comparison-bars {
  display: grid;
  gap: 8px;
}

.summary-comparison-bar {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.summary-comparison-bar-label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.summary-comparison-track {
  width: 100%;
  min-width: 0;
  height: 12px;
  border-radius: 999px;
  background: var(--ghost-bg);
  overflow: hidden;
}

.summary-comparison-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent), #2563eb);
}

.summary-comparison-bar.second .summary-comparison-fill {
  background: linear-gradient(135deg, var(--accent-2), #be185d);
}

.summary-comparison-value {
  color: var(--text);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  min-width: 44px;
  text-align: right;
}

.profile-meta {
  width: 100%;
  display: grid;
  gap: 10px;
  margin-top: 2px;
}

.profile-note-field {
  display: grid;
  gap: 6px;
}

.profile-note-field span {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.profile-note-input {
  min-height: 72px;
  resize: vertical;
}

.profile-history-block {
  border: 1px solid var(--soft-border);
  border-radius: 10px;
  background: var(--soft-panel);
  padding: 10px;
}

.profile-history-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.profile-history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.profile-history-list li {
  border: 1px solid var(--soft-border);
  border-radius: 8px;
  padding: 8px 10px;
  background: var(--card-overlay);
}

.profile-history-list strong {
  display: block;
  margin-bottom: 4px;
}

.profile-history-date {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.76rem;
}

.profile-history-list p {
  margin: 0;
  color: var(--text);
  font-size: 0.88rem;
  line-height: 1.4;
}

.profile-history-empty {
  color: var(--muted);
  font-size: 0.88rem;
}

#profilesManager {
  max-height: none;
  overflow: visible;
  overscroll-behavior: auto;
}

.setup-profile-status {
  margin: 0 0 12px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(56, 189, 248, 0.24);
  background: rgba(56, 189, 248, 0.08);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.4;
}

.profile-list-item {
  overflow: hidden;
}

.profile-item-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
}

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

.profile-item-summary-main {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.profile-summary-copy {
  color: var(--muted);
  font-size: 0.82rem;
}

.profile-summary-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.profile-summary-badge {
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--soft-border);
  background: var(--ghost-bg);
  color: var(--text);
  font-size: 0.76rem;
  white-space: nowrap;
}

.profile-item-body {
  display: grid;
  gap: 12px;
  padding: 0 12px 12px;
}

.profile-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
}

.profile-stat-card {
  border: 1px solid var(--soft-border);
  border-radius: 10px;
  background: var(--soft-panel);
  padding: 8px 10px;
}

.profile-stat-label {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.profile-stat-value {
  color: var(--text);
  font-size: 1rem;
}

.profile-history-item {
  display: grid;
  gap: 6px;
}

.profile-history-actions {
  display: flex;
  justify-content: flex-end;
}

.profile-history-delete {
  min-height: 34px;
  padding: 6px 10px;
  font-size: 0.82rem;
}

/* Usability overrides: improve contrast and control clarity in setup/profile panels. */
.advanced-setup-summary,
.profiles-manager-summary {
  color: var(--text);
  font-weight: 700;
  line-height: 1.35;
}

.advanced-setup-summary,
.profiles-manager-summary,
.profile-item-summary {
  background: color-mix(in srgb, var(--panel-2) 72%, transparent);
}

.advanced-setup-panel[open] .advanced-setup-summary,
.profiles-manager[open] .profiles-manager-summary,
.profile-list-item[open] .profile-item-summary {
  border-bottom: 1px solid var(--soft-border);
}

.advanced-setup-content,
#profilesManager {
  background: color-mix(in srgb, var(--soft-panel) 88%, transparent);
}

.setup-help,
.setup-context-hint,
.setup-profile-status,
.profiles-manager-help,
.profiles-empty-state,
.profile-summary-copy,
.profile-history-date,
.profile-note-field span,
.profile-stat-label {
  color: color-mix(in srgb, var(--muted) 92%, var(--text) 8%);
}

.profile-note-input,
.profile-rename-input,
input,
select,
textarea {
  border-color: color-mix(in srgb, var(--field-border) 80%, var(--text) 20%);
}

input::placeholder,
textarea::placeholder {
  color: color-mix(in srgb, var(--muted) 92%, var(--text) 8%);
}

button.ghost {
  background: color-mix(in srgb, var(--ghost-bg) 88%, transparent);
  border-color: color-mix(in srgb, var(--ghost-border) 84%, var(--text) 16%);
  color: var(--text);
}

.profile-summary-badge,
.profiles-count {
  border-color: color-mix(in srgb, var(--soft-border) 76%, var(--text) 24%);
}

.advanced-setup-summary:focus-visible,
.profiles-manager-summary:focus-visible,
.profile-item-summary:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 85%, white 15%);
  outline-offset: 2px;
}

:root[data-theme='light'] .advanced-setup-panel,
:root[data-theme='light'] .profiles-manager,
:root[data-theme='light'] .profile-list-item {
  border-color: color-mix(in srgb, var(--soft-border) 68%, #64748b 32%);
}

:root[data-theme='light'] .advanced-setup-summary,
:root[data-theme='light'] .profiles-manager-summary,
:root[data-theme='light'] .profile-item-summary {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.18));
}

:root[data-theme='light'] .setup-context-hint,
:root[data-theme='light'] .setup-profile-status {
  border-color: rgba(2, 132, 199, 0.34);
  background: rgba(2, 132, 199, 0.1);
  color: #334155;
}

:root[data-theme='light'] .profile-note-input,
:root[data-theme='light'] input,
:root[data-theme='light'] select,
:root[data-theme='light'] textarea {
  background: rgba(255, 255, 255, 0.62);
}

:root[data-theme='light'] .profiles-manager-message {
  color: #1d4ed8;
}

:root[data-theme='light'] .profile-inline-confirm span,
:root[data-theme='light'] .profiles-clear-confirm span,
:root[data-theme='light'] .setup-validation,
:root[data-theme='light'] .round-advance-warning {
  color: #9f1239;
}

/* Keep mobile topbar responsive behavior deterministic after base topbar rules. */
@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-actions {
    justify-content: flex-end;
  }
}

.profile-controls {
  display: grid;
  gap: 10px;
}

.profile-actions-row {
  margin-top: 0;
}

.profile-merge-select {
  width: 100%;
}

.profile-list-item[open] .profile-item-summary {
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
}

.profile-list-item[open] .profile-summary-badge:first-child {
  border-color: rgba(56, 189, 248, 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;
  }
}