:root {
  --bg: #f4edde;
  --bg-deep: #eadcc1;
  --panel: rgba(255, 250, 240, 0.84);
  --panel-strong: rgba(255, 248, 235, 0.96);
  --accent: #b4823f;
  --accent-strong: #8e5f22;
  --accent-deep: #6d4314;
  --accent-soft: rgba(180, 130, 63, 0.14);
  --accent-glow: rgba(180, 130, 63, 0.28);
  --text: #352618;
  --muted: #7d6650;
  --line: rgba(100, 68, 34, 0.14);
  --shadow: 0 24px 80px rgba(70, 43, 14, 0.14);
  --shadow-soft: 0 14px 36px rgba(82, 53, 24, 0.12);
  --page-glow-soft: rgba(255, 255, 255, 0.9);
  --page-glow-accent: rgba(196, 153, 98, 0.18);
  --page-bg-start: #f8f1e3;
  --page-bg-end: #efe4cd;
  --canvas-glow: rgba(198, 153, 90, 0.1);
  --canvas-top-light: rgba(255, 255, 255, 0.8);
  --canvas-bg-start: rgba(255, 251, 244, 0.7);
  --canvas-bg-end: rgba(243, 236, 224, 0.86);
  --toast-bg-start: rgba(255, 248, 235, 0.96);
  --toast-bg-end: rgba(248, 234, 208, 0.98);
  --toast-shadow: 0 18px 42px rgba(101, 66, 28, 0.18);
  --overlay-bg: rgba(43, 28, 13, 0.3);
  --shell-start: rgba(255, 250, 243, 0.98);
  --shell-end: rgba(248, 238, 221, 0.98);
  --shell-border: rgba(116, 81, 39, 0.12);
  --rule-hero-glow: rgba(180, 130, 63, 0.12);
  --rule-hero-start: rgba(255, 250, 241, 0.95);
  --rule-hero-end: rgba(247, 237, 219, 0.98);
  --rule-card-bg: rgba(255, 252, 246, 0.9);
  --keycap-start: #fff8ea;
  --keycap-end: #efdfbf;
  --keycap-border: rgba(142, 95, 34, 0.18);
  --callout-start: rgba(180, 130, 63, 0.14);
  --callout-end: rgba(142, 95, 34, 0.08);
  --splash-radial: rgba(209, 165, 103, 0.18);
  --splash-bg-start: #2f1f14;
  --splash-bg-end: #191007;
  --splash-text: #fff6e9;
  --splash-glow: rgba(194, 149, 87, 0.28);
  --splash-muted-strong: rgba(255, 242, 224, 0.72);
  --splash-muted: rgba(255, 242, 224, 0.8);
  --progress-track: rgba(255, 244, 224, 0.12);
  --progress-start: #f0be77;
  --progress-end: #fff0d9;
  --button-text: #fff9f0;
  --button-shadow: 0 14px 32px rgba(129, 84, 31, 0.24);
  --button-shadow-hover: 0 18px 36px rgba(129, 84, 31, 0.28);
  --hover-border: rgba(142, 95, 34, 0.24);
  --accent-border: rgba(180, 130, 63, 0.24);
  --accent-ring: rgba(180, 130, 63, 0.14);
  --surface-elevated-start: rgba(255, 252, 247, 0.96);
  --surface-elevated-end: rgba(244, 234, 216, 0.94);
  --surface-muted-start: rgba(239, 231, 218, 0.94);
  --surface-muted-end: rgba(227, 217, 201, 0.94);
  --field-bg: rgba(255, 250, 242, 0.96);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at top left, var(--page-glow-soft), transparent 26%),
    radial-gradient(circle at 85% 22%, var(--page-glow-accent), transparent 22%),
    linear-gradient(180deg, var(--page-bg-start) 0%, var(--page-bg-end) 100%);
}

body.app-locked {
  overflow: hidden;
}

body.hints-hidden #hint-text {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.45;
}

button,
input {
  font: inherit;
}

button {
  border: none;
  cursor: pointer;
}

#ui {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 18px 24px 14px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 260px;
}

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.title {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.stats,
.controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.controls {
  flex: 1;
  min-width: 260px;
  flex-wrap: wrap;
}

.controls .secondary-button {
  min-width: 78px;
}

.controls .announcement-button {
  min-width: 94px;
}

.stat {
  min-width: 92px;
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(18px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.label {
  font-size: 12px;
  color: var(--muted);
}

.value {
  margin-top: 4px;
  font-size: 24px;
  font-weight: 800;
}

button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: var(--button-text);
  box-shadow: var(--button-shadow);
  transition:
    transform 0.2s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.2s ease,
    opacity 0.18s ease,
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease;
}

button:hover,
.secondary-button:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: var(--button-shadow-hover);
}

button:active,
.secondary-button:active {
  transform: translateY(1px) scale(0.985);
  transition-duration: 0.1s;
}

.secondary-button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.menu-button {
  min-width: 78px;
  padding: 0 16px;
}

.icon-button {
  width: 42px;
  min-width: 42px;
  padding: 0;
  font-size: 24px;
  line-height: 1;
  border-radius: 12px;
  background: linear-gradient(180deg, var(--surface-elevated-start), var(--surface-elevated-end));
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.icon-button:hover,
.secondary-button:hover,
.language-option:hover {
  border-color: var(--hover-border);
}

.hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

#canvas-container {
  position: relative;
  width: 100%;
  height: calc(100vh - 116px);
  min-height: 560px;
  background:
    radial-gradient(circle at 82% 12%, var(--canvas-glow), transparent 26%),
    radial-gradient(circle at 12% 16%, var(--canvas-top-light), transparent 22%),
    linear-gradient(180deg, var(--canvas-bg-start), var(--canvas-bg-end));
  overflow: hidden;
}

.competition-start-overlay {
  position: absolute;
  inset: 0;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 20%, var(--page-glow-accent), transparent 32%),
    linear-gradient(180deg, var(--overlay-bg), var(--overlay-bg));
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.competition-start-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.competition-start-card {
  width: min(460px, 100%);
  padding: 32px 28px;
  border-radius: 28px;
  text-align: center;
  background: linear-gradient(180deg, var(--shell-start), var(--shell-end));
  border: 1px solid var(--shell-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.competition-start-kicker {
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.competition-start-title {
  font-size: clamp(28px, 5vw, 38px);
  font-weight: 800;
  line-height: 1.02;
}

.competition-start-copy {
  margin: 14px 0 24px;
  color: var(--muted);
  line-height: 1.65;
}

.competition-start-card button {
  min-width: 132px;
}

#toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  z-index: 40;
  transform: translateX(-50%) translateY(14px);
  padding: 12px 18px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 240px;
  background: linear-gradient(135deg, var(--toast-bg-start), var(--toast-bg-end));
  color: var(--accent-deep);
  border: 1px solid var(--accent-border);
  box-shadow: var(--toast-shadow);
  font-weight: 700;
  letter-spacing: 0.01em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s ease, transform 0.24s ease, box-shadow 0.24s ease;
}

#toast::before {
  content: "";
  width: 12px;
  height: 12px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 0 6px var(--accent-ring);
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  box-shadow: var(--toast-shadow);
}

.hidden {
  display: none !important;
}

.overlay-backdrop,
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
}

.settings-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 24;
  width: min(420px, 100vw);
  padding: 24px;
  background: linear-gradient(180deg, var(--shell-start), var(--shell-end));
  border-left: 1px solid var(--shell-border);
  box-shadow: -24px 0 80px rgba(0, 0, 0, 0.16);
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transform: translateX(48px);
  transition:
    transform 0.34s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.26s ease;
}

.overlay-backdrop {
  z-index: 23;
}

.overlay-backdrop.open,
.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.settings-panel.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

.settings-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.settings-header,
.menu-frame,
.settings-section {
  opacity: 0;
  transform: translateX(18px);
  transition:
    transform 0.34s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.24s ease;
}

.settings-panel.open .settings-header,
.settings-panel.open .menu-frame,
.settings-panel.open .settings-section {
  opacity: 1;
  transform: translateX(0);
}

.settings-panel.open .settings-section:nth-of-type(1) {
  transition-delay: 0.04s;
}

.settings-panel.open .settings-section:nth-of-type(2) {
  transition-delay: 0.08s;
}

.settings-panel.open .settings-section:nth-of-type(3) {
  transition-delay: 0.12s;
}

.settings-panel.open .settings-section:nth-of-type(4) {
  transition-delay: 0.16s;
}

.settings-panel.open .menu-frame {
  transition-delay: 0.06s;
}

.settings-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.settings-title {
  font-size: 30px;
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.settings-section {
  margin-bottom: 22px;
  padding: 16px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  overflow: hidden;
}

.menu-frame {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    var(--shadow-soft);
}

.menu-nav-button,
.lobby-link {
  justify-content: space-between;
  width: 100%;
  min-height: 72px;
  padding: 16px 18px;
  border-radius: 18px;
  background: linear-gradient(180deg, var(--surface-elevated-start), var(--surface-elevated-end));
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 12px 24px rgba(0, 0, 0, 0.06);
  text-align: left;
  text-decoration: none;
}

.menu-nav-copy {
  display: grid;
  gap: 0;
}

.menu-nav-title {
  font-size: 18px;
  font-weight: 800;
}

.menu-nav-meta {
  display: none;
}

.menu-nav-arrow {
  font-size: 32px;
  line-height: 1;
  color: var(--accent);
}

.section-title {
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.section-copy {
  margin: 0 0 14px;
  color: var(--text);
  line-height: 1.55;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
}

.toggle-row + .toggle-row {
  border-top: 1px solid var(--line);
}

.toggle-title {
  font-weight: 700;
}

.toggle-row input[type="checkbox"] {
  width: 48px;
  height: 28px;
  appearance: none;
  position: relative;
  border-radius: 999px;
  background: var(--line);
  transition: background 0.18s ease;
}

.toggle-row input[type="checkbox"]::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--button-text);
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease;
}

.toggle-row input[type="checkbox"]:checked {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.toggle-row input[type="checkbox"]:checked::after {
  transform: translateX(18px);
}

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

.tone-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.tone-option,
.style-option {
  min-width: 0;
  background: linear-gradient(180deg, var(--surface-elevated-start), var(--surface-elevated-end));
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.tone-option.active,
.style-option.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: var(--button-text);
  border-color: transparent;
  box-shadow: var(--button-shadow);
}

.style-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.style-option {
  justify-content: flex-start;
  min-height: 56px;
  padding: 0 14px;
}

.theme-swatch {
  width: 18px;
  height: 18px;
  flex: none;
  border-radius: 50%;
  box-shadow:
    0 0 0 4px rgba(255, 255, 255, 0.58),
    0 0 0 5px rgba(70, 43, 14, 0.08);
}

.theme-label {
  font-weight: 700;
}

.theme-original {
  background: linear-gradient(135deg, #c79d5f, #8e5f22);
}

.theme-crimson {
  background: linear-gradient(135deg, #e45f57, #8c261f);
}

.theme-orange {
  background: linear-gradient(135deg, #f39a3f, #9a4f09);
}

.theme-green {
  background: linear-gradient(135deg, #5cbc73, #24683a);
}

.theme-cyan {
  background: linear-gradient(135deg, #37c5ca, #0f6c73);
}

.theme-blue {
  background: linear-gradient(135deg, #5e99f0, #224f9a);
}

.theme-violet {
  background: linear-gradient(135deg, #ac7cf0, #5d329f);
}

.language-option {
  min-width: 0;
  padding: 0 10px;
  background: linear-gradient(180deg, var(--surface-elevated-start), var(--surface-elevated-end));
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.language-option.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: var(--button-text);
  border-color: transparent;
  box-shadow: var(--button-shadow);
}

#modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 20px;
}

#modal.open .modal-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  position: relative;
  width: min(680px, calc(100vw - 32px));
  max-height: calc(100vh - 40px);
  overflow: auto;
  padding: 24px;
  border-radius: 24px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  transition:
    transform 0.32s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.22s ease;
}

#modal.open .modal-content {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.modal-title {
  font-size: 30px;
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin-bottom: 14px;
}

.modal-body {
  color: var(--text);
  line-height: 1.65;
}

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

.modal-body p:last-child {
  margin-bottom: 0;
}

.picker-layout {
  display: grid;
  gap: 14px;
}

.picker-card {
  padding: 16px;
  border-radius: 18px;
  background: var(--rule-card-bg);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82);
}

.picker-card-title {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 800;
}

.picker-card-copy {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.5;
}

.announcement-history-card .choice-button {
  margin-top: 4px;
}

.announcement-archive-list {
  display: grid;
  gap: 12px;
}

.announcement-archive-entry {
  padding: 16px 18px;
}

.announcement-archive-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
}

.announcement-archive-version {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.1;
}

.announcement-archive-date {
  flex-shrink: 0;
  padding: 7px 10px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--surface-muted-start), var(--surface-muted-end));
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.announcement-archive-copy {
  margin: 0;
  color: var(--text);
  line-height: 1.58;
}

.announcement-archive-details {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.announcement-archive-details summary {
  list-style: none;
}

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

.announcement-archive-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  color: var(--text);
  font-weight: 700;
  line-height: 1.3;
}

.announcement-archive-arrow {
  flex-shrink: 0;
  color: var(--accent);
  font-size: 22px;
  line-height: 1;
  transition: transform 0.22s ease;
}

.announcement-archive-details[open] .announcement-archive-arrow {
  transform: rotate(90deg);
}

.announcement-archive-detail-body {
  padding-top: 12px;
}

.announcement-archive-detail-body .modal-list {
  margin: 0;
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.result-stat-card {
  padding: 14px 15px;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--surface-muted-start), var(--surface-muted-end));
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78);
}

.result-stat-label {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.result-stat-value {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
}

.picker-grid-title {
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.choice-grid {
  display: grid;
  gap: 10px;
}

.choice-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.choice-grid.helper-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.edge-width-card {
  margin-top: 14px;
}

.choice-button {
  min-width: 0;
  background: linear-gradient(180deg, var(--surface-muted-start), var(--surface-muted-end));
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.choice-button.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: var(--button-text);
  border-color: transparent;
  box-shadow: var(--button-shadow);
}

.choice-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 132px));
  justify-content: flex-start;
}

.choice-button.compact {
  min-height: 38px;
  padding: 0 14px;
  border-radius: 12px;
  font-size: 14px;
}

.settings-stack {
  display: grid;
  gap: 12px;
}

.shortcuts-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.shortcut-row {
  height: 100%;
}

.shortcut-row .setting-row-head {
  align-items: center;
}

.shortcut-row .picker-card-title {
  margin-bottom: 0;
}

.shortcut-capture {
  width: 100%;
  min-height: 42px;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.preset-card .setting-state {
  max-width: 180px;
  text-align: center;
}

.setting-row-card {
  padding: 14px;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--surface-elevated-start), var(--surface-elevated-end));
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.setting-row-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.setting-state {
  flex: none;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.speed-card {
  margin-top: 14px;
}

.speed-editor {
  display: grid;
  gap: 12px;
}

.speed-inline {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
}

.speed-range {
  appearance: none;
  width: 100%;
  height: 6px;
  margin: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--surface-muted-start), var(--surface-muted-end));
}

.speed-range::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
}

.speed-range::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -7px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.72);
  background: var(--surface-elevated-start);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.speed-range::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
}

.speed-range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.72);
  background: var(--surface-elevated-start);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.speed-number {
  width: 96px;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--field-bg);
  color: var(--text);
  outline: none;
}

.speed-number:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-ring);
}

.speed-unit {
  color: var(--muted);
  font-weight: 700;
}

.about-layout {
  gap: 12px;
}

.about-card {
  display: grid;
  gap: 10px;
}

.about-copy {
  margin: 0;
  color: var(--text);
  line-height: 1.6;
}

.about-links {
  display: grid;
  gap: 10px;
}

.about-link-button {
  justify-content: flex-start;
  width: 100%;
}

.modal-list {
  margin: 0;
  padding-left: 18px;
}

.modal-list li + li {
  margin-top: 8px;
}

.rules-layout {
  display: grid;
  gap: 14px;
}

.rules-hero {
  padding: 16px 18px;
  border-radius: 18px;
  background:
    radial-gradient(circle at top right, var(--rule-hero-glow), transparent 36%),
    linear-gradient(180deg, var(--rule-hero-start), var(--rule-hero-end));
  border: 1px solid var(--accent-border);
  box-shadow: var(--shadow-soft);
}

.rules-hero strong {
  color: var(--accent-deep);
}

.rules-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.rule-card {
  padding: 14px 14px 15px;
  border-radius: 16px;
  background: var(--rule-card-bg);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82);
}

.rule-card-title {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.rule-card p {
  margin: 0;
}

.key-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.keycap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 34px;
  padding: 0 10px;
  border-radius: 12px;
  background: linear-gradient(180deg, var(--keycap-start), var(--keycap-end));
  border: 1px solid var(--keycap-border);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 6px 18px rgba(0, 0, 0, 0.08);
  color: var(--accent-deep);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

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

.rule-flow li {
  position: relative;
  padding-left: 22px;
}

.rule-flow li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 0 5px var(--accent-ring);
}

.rule-callout {
  padding: 14px 16px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--callout-start), var(--callout-end));
  border: 1px solid var(--accent-border);
  color: var(--accent-deep);
  font-weight: 700;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

.splash-screen {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 40%, var(--splash-radial), transparent 25%),
    linear-gradient(180deg, var(--splash-bg-start) 0%, var(--splash-bg-end) 100%);
  color: var(--splash-text);
}

.splash-glow {
  position: absolute;
  width: 58vw;
  height: 58vw;
  min-width: 320px;
  min-height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--splash-glow), transparent 65%);
  filter: blur(10px);
  opacity: 0.75;
}

.splash-content {
  position: relative;
  text-align: center;
  width: min(540px, calc(100vw - 40px));
  padding: 40px 28px;
}

.splash-brand,
.splash-title,
.splash-tagline,
.splash-loading,
.splash-progress,
.splash-enter {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.splash-screen .splash-brand {
  font-size: 14px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--splash-muted-strong);
}

.splash-screen .splash-title {
  margin-top: 16px;
  font-size: clamp(54px, 12vw, 112px);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.06em;
}

.splash-screen .splash-tagline {
  margin-top: 18px;
  font-size: 16px;
  color: var(--splash-muted);
}

.splash-progress {
  width: 100%;
  height: 7px;
  margin-top: 24px;
  border-radius: 999px;
  background: var(--progress-track);
  overflow: hidden;
}

.splash-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--progress-start), var(--progress-end));
  box-shadow: 0 0 22px var(--accent-glow);
}

.splash-loading {
  margin-top: 14px;
  color: var(--splash-muted);
}

.splash-enter {
  margin: 26px auto 0;
}

.splash-screen.active .splash-brand,
.splash-screen.active .splash-title,
.splash-screen.active .splash-tagline,
.splash-screen.active .splash-progress,
.splash-screen.active .splash-loading {
  opacity: 1;
  transform: translateY(0);
}

.splash-screen.active .splash-title {
  transition-delay: 0.12s;
}

.splash-screen.active .splash-tagline,
.splash-screen.active .splash-progress,
.splash-screen.active .splash-loading {
  transition-delay: 0.24s;
}

.splash-screen.active .splash-progress-bar {
  width: 100%;
  transition: width 1.9s ease;
}

.splash-screen.ready .splash-enter {
  opacity: 1;
  transform: translateY(0);
}

.splash-screen.leaving {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.42s ease;
}

@media (max-width: 860px) {
  #ui {
    padding: 18px 18px 12px;
  }

  .brand-block {
    width: 100%;
  }

  .stats,
  .controls {
    width: 100%;
  }

  #canvas-container {
    height: calc(100vh - 180px);
    min-height: 460px;
  }
}

@media (max-width: 640px) {
  .title {
    font-size: 34px;
  }

  .settings-panel {
    padding: 18px;
  }

  .language-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .style-grid {
    grid-template-columns: 1fr;
  }

  .choice-grid.two,
  .shortcuts-grid {
    grid-template-columns: 1fr;
  }

  .choice-grid.compact {
    grid-template-columns: 1fr 1fr;
  }

  .choice-grid.helper-grid {
    grid-template-columns: 1fr;
  }

  .setting-row-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .speed-inline {
    width: 100%;
  }

  .speed-number {
    width: 100%;
  }

  .rules-grid {
    grid-template-columns: 1fr;
  }

  .modal-content {
    padding: 20px;
    border-radius: 20px;
  }

  .modal-title {
    font-size: 26px;
  }

  .modal-actions {
    flex-direction: column-reverse;
  }

  .modal-actions button,
  .modal-actions .secondary-button {
    width: 100%;
  }

  #canvas-container {
    height: calc(100vh - 236px);
    min-height: 420px;
  }
}

button:focus-visible,
.secondary-button:focus-visible,
.icon-button:focus-visible,
.menu-nav-button:focus-visible,
.lobby-link:focus-visible,
.choice-button:focus-visible,
.language-option:focus-visible,
.style-option:focus-visible,
.tone-option:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.toggle-row input[type="checkbox"]:focus-visible {
  box-shadow: 0 0 0 3px var(--accent-ring);
}

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