:root {
  --bg: #10131a;
  --panel: #171c26;
  --card: #1f2633;
  --text: #e6ecff;
  --muted: #98a2bd;
  --accent: #6ea8fe;
  --line: #2c3446;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  min-height: 100dvh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", "Noto Sans KR", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

/* ===== Fixed viewport (PC) ===== */
.stage {
  position: relative;
  width: 100vw;
  height: 100dvh;
  min-height: 100dvh;
  overflow: hidden;
  background: radial-gradient(circle at top, #111a2a 0%, var(--bg) 34%, #070b12 100%);
}

.viewport {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1480px;
  height: 920px;
  will-change: transform;
}

/* ===== App layout ===== */
.app {
  width: 1480px;
  height: 920px;
  display: grid;
  grid-template-columns: 360px minmax(420px, 1fr) 320px;
  gap: 16px;
  padding: 16px;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  overflow-y: auto;
  padding-right: 6px;
  scrollbar-gutter: stable;
}

/* scrollbar (optional, subtle) */
.panel::-webkit-scrollbar {
  width: 10px;
}

.panel::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
}

h1 {
  margin: 0 0 4px;
  font-size: 1.6rem;
}

h2 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--accent);
}

.card {
  background: linear-gradient(180deg, rgba(35, 44, 61, 0.98) 0%, rgba(28, 35, 48, 0.98) 100%);
  border: 1px solid rgba(74, 90, 120, 0.55);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
}

label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  color: #b2bedc;
}

input,
select,
button {
  width: 100%;
  margin-top: 6px;
  border-radius: 12px;
  border: 1px solid rgba(76, 91, 122, 0.6);
  background: #111722;
  color: var(--text);
  padding: 10px 12px;
  font-size: 0.95rem;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease, transform 0.16s ease;
}

input:not([type=range]),
select,
button {
  min-height: 46px;
}

input:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: none;
  border-color: rgba(110, 168, 254, 0.9);
  box-shadow: 0 0 0 3px rgba(110, 168, 254, 0.16);
}

button {
  cursor: pointer;
  background: linear-gradient(180deg, #1f2d46 0%, #19253a 100%);
  font-weight: 700;
}

button:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.actions {
  display: flex;
  gap: 10px;
}

.actions button {
  flex: 1;
}

.settings-card,
.keybind-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-guide {
  margin: -2px 0 4px;
  color: #9aa8ca;
  font-size: 0.84rem;
  line-height: 1.45;
}

.row-inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.row-inline input {
  width: auto;
  margin: 0;
}

.board-wrap {
  display: flex;
  justify-content: center;
  align-items: stretch;
  min-width: 0;
  min-height: 0;
}

.board-stage {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 18px;
}

.play-stats {
  width: 172px;
  flex: 0 0 172px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(79, 98, 132, 0.56);
  background: linear-gradient(180deg, rgba(16, 24, 37, 0.94) 0%, rgba(11, 17, 28, 0.98) 100%);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.22);
}

.play-stats-head {
  margin-bottom: 2px;
  color: #7ea7f8;
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.play-stat-item {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(76, 91, 122, 0.46);
  background: linear-gradient(180deg, rgba(19, 28, 43, 0.92) 0%, rgba(14, 21, 33, 0.98) 100%);
}

.play-stat-label {
  color: #90a2c8;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.play-stat-value {
  color: #eef4ff;
  font-size: 1.42rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
}

#gameCanvas {
  width: 560px;
  height: 840px;
  background: #0a0f18;
  border: 1px solid var(--line);
  border-radius: 12px;
}

ul {
  margin: 6px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

li {
  margin: 3px 0;
}

.muted {
  margin: 6px 0 10px;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.35;
}

.sep {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 10px 0;
}

/* ===== Keybind editor ===== */
.keybind-editor {
  display: grid;
  gap: 8px;
}

.keybind-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 74px;
  gap: 8px;
  align-items: center;
  border: 1px solid rgba(76, 91, 122, 0.56);
  border-radius: 12px;
  padding: 8px 10px;
  background: linear-gradient(180deg, rgba(15, 22, 35, 0.9) 0%, rgba(17, 23, 34, 0.96) 100%);
}

.keybind-row .label {
  color: var(--text);
  font-size: 0.9rem;
  margin: 0;
  min-width: 0;
}

.keybind-top {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.keybind-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: #eef3ff;
  letter-spacing: -0.01em;
}

.keybind-current {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  min-width: 0;
}

.keybind-current-label {
  display: none;
}

.keybind-row .key,
.keybind-row .key-code {
  display: inline-flex;
  align-items: center;
  min-height: 23px;
  max-width: 100%;
  padding: 0 8px;
  border-radius: 999px;
  border: 1px solid rgba(76, 91, 122, 0.66);
  background: rgba(111, 137, 187, 0.07);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.74rem;
  line-height: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.keybind-row .key {
  color: #eef3ff;
  font-weight: 800;
}

.keybind-row .key-code {
  color: #9eaccd;
}

.keybind-change-btn {
  margin-top: 0;
  min-height: 38px;
  padding: 0 8px;
  font-size: 0.84rem;
}

/* ===== Overlay ===== */
.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.60);
  color: #f0f4ff;
  font-size: 18px;
  text-align: center;
  padding: 24px;
  z-index: 1000;
  white-space: pre-line;
}

.hidden {
  display: none;
}


/* ===== HANDLING (TETR.IO-like) ===== */
.handling {
  margin-top: 10px;
}

.handling-title {
  margin: 10px 0 8px;
}

.handling-row {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #111722;
  margin-bottom: 8px;
}

.handling-left {
  display: grid;
  gap: 8px;
}

.handling-name {
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--accent);
  font-size: 0.92rem;
}

.handling-right {
  display: grid;
  justify-items: end;
  gap: 6px;
}

.handling-meta {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: var(--text);
  font-weight: 700;
}

.sdfX {
  margin-left: 4px;
  color: var(--muted);
}

/* range slider should not have padding (thumb reaches both ends) */
input[type=range] {
  padding: 0;
  border: none;
  background: transparent;
  height: 20px;
}

/* two boards layout */
.boards {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  justify-content: center;
}

/* VS-only elements are hidden in solo */
body.solo .vs-only {
  display: none !important;
}

/* bot field card */
.bot-field canvas {
  width: 100%;
  height: auto;
  display: block;
}


/* solo-only controls: 혼자 모드에서만 표시 */
.solo-only {
  display: none !important;
}

body.solo .solo-only {
  display: block !important;
}


/* mode-based visibility */
.mode-4wide-only,
.mode-4wide-bot-only,
.mode-classic-only {
  display: none !important;
}

body.mode-4wide .mode-4wide-only {
  display: block !important;
}

body.mode-4wide.play-bot .mode-4wide-bot-only {
  display: block !important;
}

body.mode-classic .mode-classic-only {
  display: block !important;
}


.gravity-fixed-only {
  display: none !important;
}

body.gravity-fixed .gravity-fixed-only {
  display: block !important;
}

.bot-field {
  display: none !important;
}


/* ===== Touch controls (mobile / tablet) ===== */
.touch-controls {
  display: none;
}

.touch-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.touch-row {
  display: flex;
  gap: 10px;
  pointer-events: none;
}

.touch-btn {
  width: 72px;
  min-width: 72px;
  height: 72px;
  border-radius: 18px;
  border: 1px solid rgba(110, 168, 254, 0.28);
  background: rgba(17, 23, 34, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  pointer-events: auto;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  padding: 0;
}

.touch-btn:active,
.touch-btn.is-active {
  transform: translateY(1px) scale(0.98);
  border-color: var(--accent);
  background: rgba(35, 49, 75, 0.92);
}

.touch-btn .emoji {
  font-size: 1.42rem;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.touch-btn.spin180 .emoji {
  font-size: 1.02rem;
}

.touch-btn.move-btn .emoji {
  font-size: 1.9rem;
}

.touch-btn.rotate-btn .emoji {
  font-size: 1.42rem;
}

.touch-btn.hold .emoji {
  font-size: 1.3rem;
}

.touch-btn .label {
  font-size: 0.58rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #c7d4fb;
  opacity: 0.92;
  font-weight: 800;
}

.touch-btn.hard .emoji {
  font-size: 1.6rem;
  filter: saturate(1.15) brightness(1.08);
}

.touch-btn.soft .emoji {
  font-size: 1.56rem;
}

.touch-btn.hold {
  width: 72px;
  min-width: 72px;
}

.touch-btn.move-btn {
  width: 82px;
  min-width: 82px;
}

.touch-btn.rotate-btn,
.touch-btn.soft,
.touch-btn.hard,
.touch-btn.hold {
  width: 68px;
  min-width: 68px;
}



@media (max-width: 1100px),
(pointer: coarse) {
  body.mobile-ui .touch-controls {
    grid-row: 3;
    position: static;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 12px;
    width: min(360px, calc(100vw - 16px));
    margin: 0 auto;
    padding: 0;
    z-index: auto;
    pointer-events: auto;
  }

  .desktop-ad-slot {
    width: 160px;
    min-height: 300px;
    margin-top: 14px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow: hidden;
  }

  body.mobile-ui .desktop-ad-slot {
    display: none !important;
  }

  body.mobile-ui .touch-group,
  body.mobile-ui .touch-row {
    pointer-events: auto;
  }

  body.mobile-ui .touch-btn {
    pointer-events: auto;
  }

  body.desktop-quick-ui .touch-controls {
    display: none !important;
  }
}

@media (max-width: 720px) {
  body.mobile-ui .touch-controls {
    width: min(344px, calc(100vw - 14px));
    gap: 8px;
  }

  body.mobile-ui .touch-btn {
    width: 58px;
    min-width: 58px;
    height: 62px;
    border-radius: 16px;
  }

  body.mobile-ui .touch-btn.move-btn {
    width: 72px;
    min-width: 72px;
  }

  body.mobile-ui .touch-btn.rotate-btn,
  body.mobile-ui .touch-btn.soft,
  body.mobile-ui .touch-btn.hard,
  body.mobile-ui .touch-btn.hold {
    width: 58px;
    min-width: 58px;
  }

  body.mobile-ui .touch-btn .emoji {
    font-size: 1.28rem;
  }

  body.mobile-ui .touch-btn.move-btn .emoji {
    font-size: 1.72rem;
  }

  body.mobile-ui .touch-btn.spin180 .emoji {
    font-size: 0.98rem;
  }

  body.mobile-ui .touch-btn.hard .emoji {
    font-size: 1.38rem;
  }

  body.mobile-ui .touch-btn .label {
    font-size: 0.52rem;
  }
}


/* ===== Mobile / tablet cleanup ===== */
@media (max-width: 1100px),
(pointer: coarse) {
  .keybind-card {
    display: none !important;
  }
}


/* ===== Mobile layout tuning ===== */
body.mobile-ui .viewport {
  width: min(430px, 100vw);
  height: 900px;
}

body.mobile-ui .app {
  width: min(430px, 100vw);
  height: 900px;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto auto;
  align-content: start;
  justify-items: center;
  gap: 14px;
  padding: 10px 0 12px;
}

body.mobile-ui .panel.left {
  position: static;
  width: min(382px, calc(100vw - 16px));
  max-width: calc(100vw - 16px);
  z-index: 30;
  gap: 8px;
  overflow: visible;
  padding-right: 0;
  justify-self: center;
}

body.mobile-ui .panel.right {
  display: none !important;
}

body.mobile-ui .board-wrap {
  position: relative;
  left: auto;
  top: auto;
  grid-row: 2;
  width: min(336px, calc(100vw - 24px));
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0;
  pointer-events: auto;
  transform: none;
  margin-top: 8px;
}

body.mobile-ui #gameCanvas {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
}

body.mobile-ui h1 {
  display: none;
}

body.mobile-ui .panel.left .card {
  padding: 12px;
  border-radius: 14px;
  background: rgba(31, 38, 51, 0.94);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

body.mobile-ui .panel.left h2 {
  font-size: 1.04rem;
  margin: 0 0 10px;
}

body.mobile-ui .panel.left .handling-title {
  margin: 8px 0 6px;
}

body.mobile-ui .panel.left label {
  font-size: 0.88rem;
  margin-bottom: 8px;
}

body.mobile-ui .panel.left input,
body.mobile-ui .panel.left select,
body.mobile-ui .panel.left button {
  font-size: 0.92rem;
  padding: 9px;
  border-radius: 10px;
}

body.mobile-ui .panel.left .handling-row {
  grid-template-columns: 1fr 64px;
  gap: 10px;
  padding: 9px;
  border-radius: 10px;
}

body.mobile-ui .panel.left .handling-name {
  font-size: 0.96rem;
}

body.mobile-ui .panel.left .handling-meta {
  font-size: 0.82rem;
}

body.mobile-ui .panel.left .actions {
  gap: 8px;
}

body.mobile-ui .panel.left .muted {
  font-size: 0.78rem;
  margin: 8px 0 0;
  line-height: 1.35;
}

body.mobile-ui .panel.left input[type="range"] {
  margin-top: 2px;
}

@media (max-width: 100px) {
  body.mobile-ui .viewport {
    width: min(390px, 100vw);
    height: 860px;
  }

  body.mobile-ui .app {
    width: min(390px, 100vw);
    height: 860px;
    padding-bottom: 160px;
  }

  body.mobile-ui .panel.left {
    width: min(348px, calc(100vw - 14px));
    max-width: calc(100vw - 14px);
  }

  body.mobile-ui .board-wrap {
    width: 300px;
    height: 450px;
  }

  body.mobile-ui #gameCanvas {
    width: 300px;
    height: 450px;
  }
}

/* ===== Mobile settings collapse ===== */
.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.keys-title {
  margin-bottom: 2px;
}

.settings-toggle {
  display: none;
  width: auto;
  min-width: 52px;
  margin-top: 0;
  padding: 5px 8px;
  font-size: 0.72rem;
  border-radius: 999px;
  background: rgba(17, 23, 34, 0.88);
}

body.mobile-ui .settings-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 58px;
}

body.mobile-ui .settings-card {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

body.mobile-ui .settings-card.is-collapsed {
  width: 100%;
  max-width: 100%;
}

body.mobile-ui .settings-card.is-collapsed>label:not(.mode-label),
body.mobile-ui .settings-card.is-collapsed>.gravity-fixed-only,
body.mobile-ui .settings-card.is-collapsed>.hidden,
body.mobile-ui .settings-card.is-collapsed>.handling,
body.mobile-ui .settings-card.is-collapsed>.muted {
  display: none !important;
}

body.mobile-ui .settings-card.is-collapsed .actions {
  margin-top: 6px;
}

body.mobile-ui .settings-card.is-collapsed .actions button {
  padding: 8px 6px;
}

body.mobile-ui .settings-card.is-collapsed .mode-label {
  margin-bottom: 4px;
}

body.mobile-ui .settings-card.is-collapsed .settings-head h2 {
  margin-bottom: 0;
}


body.mobile-ui.mobile-settings-open .settings-card {
  max-height: 350px;
  overflow-y: auto;
}

body.mobile-ui.mobile-settings-open .settings-card::-webkit-scrollbar {
  width: 8px;
}

body.mobile-ui.mobile-settings-open .settings-card::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

body.mobile-ui.mobile-settings-open .board-wrap {
  width: min(320px, calc(100vw - 32px));
}

body.mobile-ui.mobile-settings-open #gameCanvas {
  width: 100%;
  height: 100%;
}

@media (max-width: 100px) {
  body.mobile-ui.mobile-settings-open .settings-card {
    max-height: 320px;
  }

  body.mobile-ui.mobile-settings-open .board-wrap {
    width: min(290px, calc(100vw - 30px));
  }

  body.mobile-ui.mobile-settings-open #gameCanvas {
    width: 100%;
    height: 100%;
  }
}


/* mobile slider usability */
body.mobile-ui .panel.left .handling-left {
  min-width: 0;
}

body.mobile-ui .panel.left .handling-left input[type="range"],
body.mobile-ui .panel.left>.settings-card>label input[type="range"] {
  width: 100%;
  min-width: 0;
  display: block;
}

body.mobile-ui .panel.left .handling-left,
body.mobile-ui .panel.left>.settings-card>label {
  overflow: visible;
}

body.mobile-ui .panel.left input[type="range"]::-webkit-slider-runnable-track {
  height: 8px;
}

body.mobile-ui .panel.left input[type="range"]::-webkit-slider-thumb {
  margin-top: -4px;
}

body.mobile-ui .panel.left input[type="range"]::-moz-range-track {
  height: 8px;
}

body.mobile-ui .panel.left input[type="range"]::-moz-range-thumb {
  height: 16px;
  width: 16px;
}


/* mobile slider final fix */
body.mobile-ui .panel.left input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100% !important;
  min-width: 0;
  display: block;
  margin-top: 4px;
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

body.mobile-ui .panel.left input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #d9d9d9;
}

body.mobile-ui .panel.left input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #1e88e5;
  border: 0;
  margin-top: -5px;
}

body.mobile-ui .panel.left input[type="range"]::-moz-range-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #d9d9d9;
}

body.mobile-ui .panel.left input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #1e88e5;
  border: 0;
}




/* ===== Contact ===== */
.site-contact {
  position: fixed;
  left: 50%;
  bottom: max(14px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 1200;
}

body.desktop-quick-ui .site-contact {
  left: auto;
  right: 26px;
  bottom: 22px;
  transform: none;
  z-index: 1100;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 10px 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(14, 21, 33, 0.92) 0%, rgba(11, 16, 26, 0.96) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(110, 168, 254, 0.26);
  color: var(--text);
  text-decoration: none;
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.34);
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease, box-shadow 0.16s ease;
}

.contact-link:hover {
  transform: translateY(-1px);
  border-color: rgba(110, 168, 254, 0.5);
  background: linear-gradient(180deg, rgba(16, 25, 38, 0.96) 0%, rgba(12, 18, 29, 1) 100%);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.38);
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: rgba(110, 168, 254, 0.12);
  color: #dce9ff;
  font-size: 1rem;
  flex: 0 0 auto;
}

.contact-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.contact-title {
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.contact-desc {
  font-size: 0.76rem;
  color: #92a3c9;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(110, 168, 254, 0.14);
  color: #dce6ff;
  font-size: 0.84rem;
  font-weight: 700;
  white-space: nowrap;
}

@media (max-width: 1100px),
(pointer: coarse) {
  .site-contact {
    bottom: calc(env(safe-area-inset-bottom) + 152px);
    z-index: 1350;
  }

  .contact-link {
    gap: 10px;
    min-height: 50px;
    padding: 9px 12px;
    border-radius: 16px;
  }

  .contact-icon {
    width: 30px;
    height: 30px;
    border-radius: 10px;
  }

  .contact-desc {
    display: none;
  }

  .contact-email {
    padding: 0 10px;
    font-size: 0.76rem;
  }
}

@media (max-width: 430px) {
  .contact-link {
    gap: 8px;
    padding: 8px 10px;
  }

  .contact-title {
    font-size: 0.82rem;
  }

  .contact-email {
    font-size: 0.69rem;
    padding: 0 8px;
  }
}


.board-shell {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-system-row,
.mobile-system-btn {
  display: none;
}

/* ===== Desktop usability ===== */
@media (min-width: 1101px) and (pointer: fine) {

  .panel.left,
  .panel.right {
    padding-bottom: 88px;
  }

  .panel.right {
    overflow: hidden;
  }

  .settings-card {
    min-height: calc(100% - 4px);
  }

  .keybind-card {
    min-height: 0;
    height: 100%;
    overflow: hidden;
    gap: 6px;
  }

  .keybind-editor {
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
  }

  .keybind-editor::-webkit-scrollbar {
    width: 8px;
  }

  .keybind-editor::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.10);
    border-radius: 999px;
  }

  .settings-card .actions {
    margin-top: auto;
    padding-top: 10px;
  }
}

@media (max-width: 1100px),
(pointer: coarse) {
  .keybind-row {
    grid-template-columns: minmax(0, 1fr) 78px;
    padding: 9px;
  }

  .keybind-name {
    font-size: 0.9rem;
  }

  .keybind-row .key,
  .keybind-row .key-code {
    font-size: 0.72rem;
  }
}




/* ===== Desktop quick bar / play-first layout ===== */
@media (min-width: 1101px) and (pointer: fine) {
  body.desktop-quick-ui .app {
    position: relative;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto 1fr;
    gap: 18px 0;
    padding: 18px 20px 16px;
  }

  body.desktop-quick-ui .panel.left {
    display: none !important;
  }

  body.desktop-quick-ui .mobile-topbar {
    display: grid;
    grid-column: 1;
    grid-row: 1;
    grid-template-columns: 56px minmax(0, 1fr) 56px;
    align-items: center;
    gap: 12px;
    width: min(560px, calc(100% - 24px));
    justify-self: center;
    position: relative;
    z-index: 45;
  }

  body.desktop-quick-ui .mobile-topbar-btn {
    width: 100%;
    min-width: 0;
    min-height: 50px;
    margin: 0;
    padding: 0 12px;
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(24, 35, 54, 0.98) 0%, rgba(17, 24, 37, 0.98) 100%);
    border: 1px solid rgba(90, 112, 152, 0.55);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.24);
    color: #e8efff;
    font-weight: 800;
  }

  body.desktop-quick-ui .mobile-icon-btn {
    font-size: 1.2rem;
    padding: 0;
  }

  body.desktop-quick-ui .mobile-mode-switch {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    width: 100%;
    min-width: 0;
    min-height: 50px;
    padding: 4px;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(18, 27, 42, 0.96) 0%, rgba(12, 19, 31, 0.96) 100%);
    border: 1px solid rgba(90, 112, 152, 0.55);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.24);
  }

  body.desktop-quick-ui .mobile-mode-switch.is-hidden {
    visibility: hidden;
  }

  body.desktop-quick-ui .mobile-mode-chip {
    flex: 1 1 0;
    min-width: 0;
    min-height: 42px;
    margin: 0;
    padding: 0 10px;
    border-radius: 12px;
    border: 1px solid transparent;
    background: transparent;
    color: #c8d6f4;
    font-size: 0.92rem;
    font-weight: 900;
    letter-spacing: -0.01em;
    box-shadow: none;
  }

  body.desktop-quick-ui .mobile-mode-chip.is-active {
    background: linear-gradient(180deg, rgba(46, 71, 116, 0.94) 0%, rgba(33, 51, 86, 0.94) 100%);
    border-color: rgba(110, 168, 254, 0.34);
    color: #f2f7ff;
  }

  body.desktop-quick-ui .mobile-sheet {
    display: none;
    position: absolute;
    top: 84px;
    left: 50%;
    transform: translateX(-50%);
    width: min(760px, calc(100% - 24px));
    z-index: 60;
    pointer-events: none;
  }

  body.desktop-quick-ui.mobile-mode-sheet-open .mobile-mode-sheet,
  body.desktop-quick-ui.mobile-handling-sheet-open .mobile-handling-sheet {
    display: block;
    pointer-events: auto;
  }

  body.desktop-quick-ui .mobile-mode-sheet .mobile-sheet-card {
    width: 232px;
    margin-right: auto;
  }

  body.desktop-quick-ui .mobile-handling-sheet .mobile-sheet-card {
    width: 392px;
    margin-left: auto;
  }

  body.desktop-quick-ui .mobile-sheet-card {
    background: linear-gradient(180deg, rgba(31, 38, 51, 0.98) 0%, rgba(22, 29, 41, 0.98) 100%);
    border: 1px solid rgba(85, 102, 138, 0.58);
    border-radius: 18px;
    padding: 14px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
    max-height: min(720px, calc(100vh - 140px));
    overflow-y: auto;
  }

  body.desktop-quick-ui .mobile-sheet-card::-webkit-scrollbar {
    width: 8px;
  }

  body.desktop-quick-ui .mobile-sheet-card::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
  }

  body.desktop-quick-ui .mobile-sheet-title {
    margin: 0 0 10px;
    color: var(--accent);
    font-size: 0.98rem;
    font-weight: 900;
    letter-spacing: 0.02em;
  }

  body.desktop-quick-ui .mobile-sheet label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.8rem;
    font-weight: 700;
    color: #b8c5e1;
  }

  body.desktop-quick-ui .mobile-sheet select,
  body.desktop-quick-ui .mobile-sheet input {
    font-size: 0.9rem;
    padding: 9px 10px;
    border-radius: 11px;
  }

  body.desktop-quick-ui .mobile-handling-sheet .handling-row {
    grid-template-columns: 1fr 64px;
    gap: 8px;
    padding: 9px;
    margin-bottom: 8px;
  }

  body.desktop-quick-ui .mobile-handling-sheet .handling-name {
    font-size: 0.9rem;
  }

  body.desktop-quick-ui .mobile-handling-sheet .handling-meta {
    font-size: 0.8rem;
  }

  body.desktop-quick-ui .mobile-handling-sheet input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100% !important;
    min-width: 0;
    display: block;
    margin-top: 4px;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  body.desktop-quick-ui .mobile-handling-sheet input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    background: #d9d9d9;
  }

  body.desktop-quick-ui .mobile-handling-sheet input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #1e88e5;
    border: 0;
    margin-top: -5px;
  }

  body.desktop-quick-ui .mobile-handling-sheet input[type="range"]::-moz-range-track {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    background: #d9d9d9;
  }

  body.desktop-quick-ui .mobile-handling-sheet input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #1e88e5;
    border: 0;
  }

  body.desktop-quick-ui .board-wrap {
    grid-column: 1;
    grid-row: 2;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 0;
    margin-top: 4px;
    min-width: 0;
    width: 100%;
    padding-bottom: 0;
  }

  body.desktop-quick-ui {
    --desktop-board-canvas-w: 464px;
    --desktop-board-canvas-h: 696px;
    --desktop-stats-w: 122px;
    --desktop-stats-gap: 26px;
  }

  body.desktop-quick-ui .board-stage {
    position: relative;
    width: 100%;
    min-height: var(--desktop-board-canvas-h);
    align-items: flex-start;
    justify-content: center;
    gap: 0;
  }

  body.desktop-quick-ui .board-shell {
    width: auto;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
  }

  body.desktop-quick-ui #gameCanvas {
    width: var(--desktop-board-canvas-w);
    height: var(--desktop-board-canvas-h);
  }

  body.desktop-quick-ui .play-stats {
    position: absolute;
    left: calc(50% + (var(--desktop-board-canvas-w) / 2) + var(--desktop-stats-gap));
    top: 88px;
    width: var(--desktop-stats-w);
    flex: 0 0 var(--desktop-stats-w);
    display: flex;
    gap: 8px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    z-index: 2;
  }

  body.desktop-quick-ui .panel.right {
    display: none !important;
  }

  body.desktop-quick-ui .mobile-system-row {
    display: none !important;
  }

  body.desktop-quick-ui .desktop-keybind-sheet-section {
    display: block;
    margin-top: 14px;
  }

  body.desktop-quick-ui .desktop-sheet-divider {
    height: 1px;
    margin: 2px 0 12px;
    background: linear-gradient(90deg, rgba(85, 102, 138, 0) 0%, rgba(85, 102, 138, 0.72) 18%, rgba(85, 102, 138, 0.72) 82%, rgba(85, 102, 138, 0) 100%);
  }

  body.desktop-quick-ui .desktop-keybind-guide {
    margin-bottom: 10px;
  }

  body.desktop-quick-ui #desktopKeybindSheetHost .keybind-card {
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
    gap: 8px;
  }

  body.desktop-quick-ui #desktopKeybindSheetHost .keys-title,
  body.desktop-quick-ui #desktopKeybindSheetHost .key-guide {
    display: none;
  }

  body.desktop-quick-ui #desktopKeybindSheetHost .keybind-editor {
    display: grid;
    gap: 8px;
    padding-right: 4px;
  }

  body.desktop-quick-ui #desktopKeybindSheetHost .keybind-row {
    grid-template-columns: minmax(0, 1fr) 70px;
    padding: 8px 9px;
    gap: 8px;
    border-radius: 12px;
  }

  body.desktop-quick-ui #desktopKeybindSheetHost .keybind-name {
    font-size: 0.9rem;
  }

  body.desktop-quick-ui #desktopKeybindSheetHost .keybind-row .key,
  body.desktop-quick-ui #desktopKeybindSheetHost .keybind-row .key-code {
    font-size: 0.72rem;
  }

  body.desktop-quick-ui #desktopKeybindSheetHost .keybind-change-btn {
    min-height: 36px;
    font-size: 0.82rem;
  }
}


/* ===== Mobile top bar / quick menus ===== */
.mobile-topbar,
.mobile-sheet,
.mobile-mode-switch,
.mobile-bottom-start {
  display: none;
}

.desktop-keybind-sheet-section {
  display: none;
}

@media (max-width: 1100px),
(pointer: coarse) {
  body.mobile-ui .panel.left {
    display: none !important;
  }

  body.mobile-ui .mobile-topbar {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) 52px;
    align-items: center;
    gap: 10px;
    width: min(360px, calc(100vw - 16px));
    justify-self: center;
    position: relative;
    z-index: 45;
  }

  body.mobile-ui .mobile-topbar-btn {
    width: 100%;
    min-width: 0;
    min-height: 48px;
    margin: 0;
    padding: 0 12px;
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(24, 35, 54, 0.98) 0%, rgba(17, 24, 37, 0.98) 100%);
    border: 1px solid rgba(90, 112, 152, 0.55);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.24);
    color: #e8efff;
    font-weight: 800;
  }

  body.mobile-ui .mobile-icon-btn {
    font-size: 1.18rem;
    padding: 0;
  }

  body.mobile-ui .mobile-sheet {
    display: none;
    position: absolute;
    top: 64px;
    z-index: 60;
    pointer-events: none;
  }

  body.mobile-ui.mobile-mode-sheet-open .mobile-mode-sheet,
  body.mobile-ui.mobile-handling-sheet-open .mobile-handling-sheet {
    display: block;
    pointer-events: auto;
  }

  body.mobile-ui .mobile-mode-sheet {
    left: 8px;
    width: min(220px, calc(100vw - 28px));
  }

  body.mobile-ui .mobile-handling-sheet {
    right: 8px;
    width: min(252px, calc(100vw - 28px));
  }

  body.mobile-ui .mobile-sheet-card {
    background: linear-gradient(180deg, rgba(31, 38, 51, 0.98) 0%, rgba(22, 29, 41, 0.98) 100%);
    border: 1px solid rgba(85, 102, 138, 0.58);
    border-radius: 18px;
    padding: 14px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
    max-height: 320px;
    overflow-y: auto;
  }

  body.mobile-ui .mobile-sheet-card::-webkit-scrollbar {
    width: 8px;
  }

  body.mobile-ui .mobile-sheet-card::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
  }

  body.mobile-ui .mobile-sheet-title {
    margin: 0 0 10px;
    color: var(--accent);
    font-size: 0.96rem;
    font-weight: 900;
    letter-spacing: 0.02em;
  }

  body.mobile-ui .mobile-sheet label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.84rem;
    font-weight: 700;
    color: #b8c5e1;
  }

  body.mobile-ui .mobile-sheet select,
  body.mobile-ui .mobile-sheet input {
    font-size: 0.88rem;
    padding: 9px 10px;
    border-radius: 11px;
  }

  body.mobile-ui .mobile-handling-sheet .handling-row {
    grid-template-columns: 1fr 58px;
    gap: 8px;
    padding: 8px;
    margin-bottom: 7px;
  }

  body.mobile-ui .mobile-handling-sheet .handling-name {
    font-size: 0.88rem;
  }

  body.mobile-ui .mobile-handling-sheet .handling-meta {
    font-size: 0.78rem;
  }

  body.mobile-ui .mobile-handling-sheet input[type="range"] {
    margin-top: 3px;
  }


  body.mobile-ui .mobile-handling-sheet .handling-left,
  body.mobile-ui .mobile-handling-sheet label {
    min-width: 0;
    overflow: visible;
  }

  body.mobile-ui .mobile-handling-sheet input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100% !important;
    min-width: 0;
    display: block;
    margin-top: 4px;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  body.mobile-ui .mobile-handling-sheet input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    background: #d9d9d9;
  }

  body.mobile-ui .mobile-handling-sheet input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #1e88e5;
    border: 0;
    margin-top: -5px;
  }

  body.mobile-ui .mobile-handling-sheet input[type="range"]::-moz-range-track {
    width: 100%;
    height: 8px;
    border-radius: 999px;
    background: #d9d9d9;
  }

  body.mobile-ui .mobile-handling-sheet input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #1e88e5;
    border: 0;
  }

  body.mobile-ui .app {
    position: relative;
    grid-template-rows: auto auto;
    padding-top: 10px;
  }

  body.mobile-ui .board-wrap {
    grid-row: 2;
    width: min(360px, calc(100vw - 18px));
    margin-top: 18px;
  }

  body.mobile-ui .mobile-mode-switch {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    width: 100%;
    min-width: 0;
    min-height: 48px;
    padding: 4px;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(18, 27, 42, 0.96) 0%, rgba(12, 19, 31, 0.96) 100%);
    border: 1px solid rgba(90, 112, 152, 0.55);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.24);
  }

  body.mobile-ui .mobile-mode-switch.is-hidden {
    visibility: hidden;
  }

  body.mobile-ui .mobile-mode-chip {
    flex: 1 1 0;
    min-width: 0;
    min-height: 40px;
    margin: 0;
    padding: 0 8px;
    border-radius: 12px;
    border: 1px solid transparent;
    background: transparent;
    color: #c8d6f4;
    font-size: 0.88rem;
    font-weight: 900;
    letter-spacing: -0.01em;
    box-shadow: none;
  }

  body.mobile-ui .mobile-mode-chip.is-active {
    background: linear-gradient(180deg, rgba(46, 71, 116, 0.94) 0%, rgba(33, 51, 86, 0.94) 100%);
    border-color: rgba(110, 168, 254, 0.34);
    color: #f2f7ff;
  }

  body.mobile-ui .mobile-system-row {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr) 88px;
    gap: 8px;
    width: 100%;
    margin: 8px auto 0;
  }

  body.mobile-ui .mobile-system-btn,
  body.mobile-ui .mobile-bottom-start {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 42px;
    margin: 0;
    padding: 0 12px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(24, 35, 54, 0.98) 0%, rgba(17, 24, 37, 0.98) 100%);
    border: 1px solid rgba(90, 112, 152, 0.55);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.24);
    color: #edf3ff;
    font-size: 0.82rem;
    font-weight: 900;
    letter-spacing: 0.02em;
  }

  body.mobile-ui .mobile-system-btn .icon,
  body.mobile-ui .mobile-bottom-start .icon {
    font-size: 0.96rem;
    line-height: 1;
  }

  body.mobile-ui .mobile-system-btn .text,
  body.mobile-ui .mobile-bottom-start .text {
    line-height: 1;
    white-space: nowrap;
  }

  body.mobile-ui .mobile-bottom-start {
    min-width: 0;
    width: 100%;
  }

  body.mobile-ui .mobile-system-side {
    min-width: 0;
    padding: 0 10px;
  }
}


@media (max-width: 380px) {
  body.mobile-ui .mobile-topbar {
    width: min(344px, calc(100vw - 14px));
    grid-template-columns: 48px minmax(0, 1fr) 48px;
    gap: 8px;
  }

  body.mobile-ui .mobile-topbar-btn {
    min-height: 44px;
    border-radius: 13px;
  }

  body.mobile-ui .mobile-mode-switch {
    min-height: 44px;
    border-radius: 14px;
  }

  body.mobile-ui .mobile-mode-chip {
    min-height: 36px;
    font-size: 0.82rem;
    padding: 0 6px;
  }

  body.mobile-ui .mobile-mode-sheet {
    width: min(204px, calc(100vw - 22px));
  }

  body.mobile-ui .mobile-handling-sheet {
    width: min(232px, calc(100vw - 22px));
  }

  body.mobile-ui .mobile-sheet-card {
    max-height: 300px;
    padding: 12px;
  }

  body.mobile-ui .board-wrap {
    width: min(312px, calc(100vw - 14px));
    margin-top: 24px;
  }

  body.mobile-ui .mobile-system-row {
    grid-template-columns: 76px minmax(0, 1fr) 76px;
    gap: 6px;
    margin-top: 10px;
  }

  body.mobile-ui .mobile-system-btn,
  body.mobile-ui .mobile-bottom-start {
    min-height: 40px;
    padding: 0 9px;
    font-size: 0.74rem;
  }
}



@media (max-width: 1100px) and (pointer: coarse) and (max-height: 520px) {
  body.mobile-ui .app {
    gap: 10px;
    padding-top: 8px;
    padding-bottom: 8px;
  }

  body.mobile-ui .mobile-topbar {
    width: min(332px, calc(100vw - 14px));
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    gap: 8px;
  }

  body.mobile-ui .mobile-topbar-btn {
    min-height: 44px;
    border-radius: 13px;
  }

  body.mobile-ui .mobile-mode-switch {
    min-height: 44px;
    border-radius: 14px;
  }

  body.mobile-ui .mobile-mode-chip {
    min-height: 36px;
    font-size: 0.82rem;
    padding: 0 6px;
  }

  body.mobile-ui .board-wrap {
    width: min(312px, calc(100vw - 18px));
    margin-top: 14px;
  }

  body.mobile-ui .mobile-system-row {
    grid-template-columns: 74px minmax(0, 1fr) 74px;
    gap: 6px;
    margin-top: 10px;
  }

  body.mobile-ui .mobile-system-btn,
  body.mobile-ui .mobile-bottom-start {
    min-height: 38px;
    font-size: 0.72rem;
    padding: 0 8px;
  }

  body.mobile-ui .touch-controls {
    width: min(332px, calc(100vw - 14px));
    gap: 8px;
  }

  body.mobile-ui .touch-btn {
    width: 54px;
    min-width: 54px;
    height: 58px;
    border-radius: 15px;
  }

  body.mobile-ui .touch-btn.move-btn {
    width: 70px;
    min-width: 70px;
  }

  body.mobile-ui .touch-btn.rotate-btn,
  body.mobile-ui .touch-btn.soft,
  body.mobile-ui .touch-btn.hard,
  body.mobile-ui .touch-btn.hold {
    width: 54px;
    min-width: 54px;
  }

  body.mobile-ui .touch-btn .emoji {
    font-size: 1.18rem;
  }

  body.mobile-ui .touch-btn.move-btn .emoji {
    font-size: 1.54rem;
  }

  body.mobile-ui .touch-btn.spin180 .emoji {
    font-size: 0.92rem;
  }

  body.mobile-ui .touch-btn .label {
    font-size: 0.5rem;
  }
}

@media (max-width: 1100px),
(pointer: coarse) {
  body.mobile-ui .site-contact {
    display: none !important;
  }

  body.mobile-ui .board-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  body.mobile-ui .board-stage {
    width: 100%;
    display: flex;
    justify-content: center;
  }

  body.mobile-ui .play-stats {
    display: none !important;
  }

  body.mobile-ui .board-shell {
    width: 100%;
    aspect-ratio: 560 / 840;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}


@media (min-width: 1101px) and (pointer: fine) and (max-width: 1320px) {
  body.desktop-quick-ui {
    --desktop-board-canvas-w: 448px;
    --desktop-board-canvas-h: 672px;
    --desktop-stats-w: 112px;
    --desktop-stats-gap: 20px;
  }

  body.desktop-quick-ui .play-stats {
    top: 82px;
  }

  body.desktop-quick-ui .play-stat-item {
    padding: 8px 9px;
  }

  body.desktop-quick-ui .play-stat-value {
    font-size: 1.08rem;
  }
}


/* ===== Mobile fixed-ratio final guard ===== */
@media (max-width: 1100px),
(pointer: coarse) {
  body.mobile-ui {
    --mobile-design-w: 390px;
    --mobile-design-h: 640px;
    --mobile-topbar-w: 298px;
    --mobile-board-w: 272px;
    --mobile-system-w: 278px;
    --mobile-touch-w: 278px;
    --mobile-shell-gap: 10px;
  }

  body.mobile-ui .viewport {
    width: var(--mobile-design-w) !important;
    height: var(--mobile-design-h) !important;
  }

  body.mobile-ui .app {
    width: var(--mobile-design-w) !important;
    height: var(--mobile-design-h) !important;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    align-content: start;
    justify-items: center;
    gap: var(--mobile-shell-gap);
    padding: 10px 0 8px;
  }

  body.mobile-ui .mobile-topbar {
    width: var(--mobile-topbar-w) !important;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    gap: 8px;
  }

  body.mobile-ui .mobile-topbar-btn {
    min-height: 44px;
    border-radius: 12px;
    padding: 0 8px;
  }

  body.mobile-ui .mobile-mode-switch {
    min-height: 44px;
    border-radius: 14px;
    padding: 3px;
  }

  body.mobile-ui .mobile-mode-chip {
    min-height: 36px;
    font-size: 0.8rem;
    padding: 0 6px;
  }

  body.mobile-ui .mobile-sheet {
    top: 58px;
  }

  body.mobile-ui .mobile-mode-sheet {
    left: calc((var(--mobile-design-w) - var(--mobile-topbar-w)) / 2);
    width: 214px;
  }

  body.mobile-ui .mobile-handling-sheet {
    right: calc((var(--mobile-design-w) - var(--mobile-topbar-w)) / 2);
    width: 242px;
  }

  body.mobile-ui .mobile-sheet-card {
    max-height: 290px;
    padding: 12px;
  }

  body.mobile-ui .board-wrap {
    width: var(--mobile-board-w) !important;
    margin-top: 4px !important;
    gap: 0;
  }

  body.mobile-ui .board-stage {
    width: 100%;
    min-height: 0;
  }

  body.mobile-ui .board-shell {
    width: 100%;
    aspect-ratio: 560 / 840;
  }

  body.mobile-ui #gameCanvas {
    width: 100% !important;
    height: 100% !important;
  }

  body.mobile-ui .mobile-system-row {
    width: var(--mobile-system-w) !important;
    grid-template-columns: 68px minmax(0, 1fr) 68px;
    gap: 8px;
    margin-top: 14px;
  }

  body.mobile-ui .mobile-system-btn,
  body.mobile-ui .mobile-bottom-start {
    min-height: 40px;
    padding: 0 8px;
    font-size: 0.74rem;
    border-radius: 999px;
  }

  body.mobile-ui .mobile-system-btn .icon,
  body.mobile-ui .mobile-bottom-start .icon {
    font-size: 0.9rem;
  }

  body.mobile-ui .touch-controls {
    width: var(--mobile-touch-w) !important;
    display: grid !important;
    grid-template-columns: 54px 54px 48px 48px 48px;
    grid-template-rows: 56px 56px;
    justify-content: center;
    justify-items: center;
    align-items: center;
    gap: 8px 6px;
    margin: 12px auto 0;
  }

  body.mobile-ui .touch-group,
  body.mobile-ui .touch-row {
    display: contents;
    gap: 0;
  }

  body.mobile-ui .touch-btn {
    width: 48px !important;
    min-width: 48px !important;
    height: 56px;
    border-radius: 15px;
  }

  body.mobile-ui .touch-btn.move-btn {
    width: 54px !important;
    min-width: 54px !important;
  }

  body.mobile-ui .touch-btn.rotate-btn,
  body.mobile-ui .touch-btn.soft,
  body.mobile-ui .touch-btn.hard,
  body.mobile-ui .touch-btn.hold {
    width: 48px !important;
    min-width: 48px !important;
  }

  body.mobile-ui .touch-btn[data-action="rotateCCW"] {
    grid-column: 3;
    grid-row: 1;
  }

  body.mobile-ui .touch-btn[data-action="rotateCW"] {
    grid-column: 4;
    grid-row: 1;
  }

  body.mobile-ui .touch-btn[data-action="rotate180"] {
    grid-column: 5;
    grid-row: 1;
  }

  body.mobile-ui .touch-btn[data-action="moveLeft"] {
    grid-column: 1;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="moveRight"] {
    grid-column: 2;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="softDrop"] {
    grid-column: 3;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="hardDrop"] {
    grid-column: 4;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="hold"] {
    grid-column: 5;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn .emoji {
    font-size: 1.08rem;
  }

  body.mobile-ui .touch-btn.move-btn .emoji {
    font-size: 1.34rem;
  }

  body.mobile-ui .touch-btn.spin180 .emoji {
    font-size: 0.86rem;
  }

  body.mobile-ui .touch-btn .label {
    font-size: 0.46rem;
  }
}


/* ===== Mobile ultra-small guard: prevent control bunching ===== */
@media (max-width: 0px),
(max-height: 0px) {
  body.mobile-ui {
    --mobile-system-w: 286px;
    --mobile-touch-layout-w: 286px;
  }

  body.mobile-ui .mobile-system-row {
    width: var(--mobile-system-w) !important;
    grid-template-columns: 68px minmax(0, 1fr) 68px;
    gap: 5px;
    margin-top: 14px;
  }

  body.mobile-ui .mobile-system-btn,
  body.mobile-ui .mobile-bottom-start {
    min-height: 40px;
    font-size: 0.72rem;
    padding: 0 8px;
  }

  body.mobile-ui .touch-controls {
    width: var(--mobile-touch-layout-w) !important;
    display: grid !important;
    grid-template-columns: 60px 60px 46px 46px 46px;
    grid-template-rows: 54px 54px;
    justify-content: center;
    justify-items: center;
    align-items: center;
    gap: 6px 5px;
    margin: 12px auto 0;
  }

  body.mobile-ui .touch-group,
  body.mobile-ui .touch-row {
    display: contents;
  }

  body.mobile-ui .touch-btn {
    width: 46px !important;
    min-width: 46px !important;
    height: 54px !important;
    border-radius: 14px;
  }

  body.mobile-ui .touch-btn.move-btn {
    width: 60px !important;
    min-width: 60px !important;
  }

  body.mobile-ui .touch-btn[data-action="rotateCCW"] {
    grid-column: 3;
    grid-row: 1;
  }

  body.mobile-ui .touch-btn[data-action="rotateCW"] {
    grid-column: 4;
    grid-row: 1;
  }

  body.mobile-ui .touch-btn[data-action="rotate180"] {
    grid-column: 5;
    grid-row: 1;
  }

  body.mobile-ui .touch-btn[data-action="moveLeft"] {
    grid-column: 1;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="moveRight"] {
    grid-column: 2;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="softDrop"] {
    grid-column: 3;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="hardDrop"] {
    grid-column: 4;
    grid-row: 2;
  }

  body.mobile-ui .touch-btn[data-action="hold"] {
    grid-column: 5;
    grid-row: 2;
  }
}

@media (max-width: 0px),
(max-height: 0px) {
  body.mobile-ui {
    --mobile-topbar-w: 298px;
    --mobile-board-w: 286px;
    --mobile-system-w: 278px;
    --mobile-touch-layout-w: 294px;
  }

  body.mobile-ui .mobile-topbar {
    width: var(--mobile-topbar-w) !important;
    grid-template-columns: 42px minmax(0, 1fr) 42px;
    gap: 6px;
  }

  body.mobile-ui .mobile-topbar-btn {
    min-height: 42px;
  }

  body.mobile-ui .mobile-mode-switch {
    min-height: 42px;
  }

  body.mobile-ui .mobile-mode-chip {
    min-height: 34px;
    font-size: 0.76rem;
  }

  body.mobile-ui .board-wrap {
    width: var(--mobile-board-w) !important;
    margin-top: 4px !important;
  }

  body.mobile-ui .mobile-system-row {
    width: var(--mobile-system-w) !important;
    grid-template-columns: 64px minmax(0, 1fr) 64px;
    gap: 5px;
    margin-top: 14px;
  }

  body.mobile-ui .mobile-system-btn,
  body.mobile-ui .mobile-bottom-start {
    min-height: 38px;
    font-size: 0.64rem;
    padding: 0 6px;
  }

  body.mobile-ui .touch-controls {
    width: var(--mobile-touch-layout-w) !important;
    grid-template-columns: 56px 56px 44px 44px 44px;
    grid-template-rows: 50px 50px;
    gap: 5px 4px;
    margin-top: 6px;
  }

  body.mobile-ui .touch-btn {
    width: 44px !important;
    min-width: 44px !important;
    height: 50px !important;
    border-radius: 14px;
  }

  body.mobile-ui .touch-btn.move-btn {
    width: 60px !important;
    min-width: 60px !important;
  }

  body.mobile-ui .touch-btn .emoji {
    font-size: 1rem;
  }

  body.mobile-ui .touch-btn.move-btn .emoji {
    font-size: 1.32rem;
  }

  body.mobile-ui .touch-btn.spin180 .emoji {
    font-size: 0.82rem;
  }

  body.mobile-ui .touch-btn .label {
    font-size: 0.42rem;
  }
}

/* ===== Mobile fixed-ratio lock (0.3.92) ===== */
@media (max-width: 1100px),
(pointer: coarse) {
  body.mobile-ui {
    --mobile-design-w: 390px;
    --mobile-design-h: 736px;
    --mobile-topbar-w: 302px;
    --mobile-board-w: 300px;
    --mobile-system-w: 300px;
    --mobile-touch-w: 300px;
    --mobile-shell-gap: 12px;
  }

  body.mobile-ui .viewport {
    width: var(--mobile-design-w) !important;
    height: var(--mobile-design-h) !important;
  }

  body.mobile-ui .app {
    width: var(--mobile-design-w) !important;
    height: var(--mobile-design-h) !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: auto auto auto !important;
    align-content: start !important;
    justify-items: center !important;
    gap: var(--mobile-shell-gap) !important;
    padding: 12px 0 10px !important;
  }

  body.mobile-ui .mobile-topbar {
    width: var(--mobile-topbar-w) !important;
    grid-template-columns: 44px minmax(0, 1fr) 44px !important;
    gap: 8px !important;
  }

  body.mobile-ui .mobile-topbar-btn {
    min-height: 44px !important;
    border-radius: 12px !important;
    padding: 0 8px !important;
  }

  body.mobile-ui .mobile-mode-switch {
    min-height: 44px !important;
    border-radius: 14px !important;
    padding: 3px !important;
  }

  body.mobile-ui .mobile-mode-chip {
    min-height: 36px !important;
    font-size: 0.8rem !important;
    padding: 0 6px !important;
  }

  body.mobile-ui .mobile-sheet {
    top: 58px !important;
  }

  body.mobile-ui .mobile-mode-sheet {
    left: calc((var(--mobile-design-w) - var(--mobile-topbar-w)) / 2) !important;
    width: 214px !important;
  }

  body.mobile-ui .mobile-handling-sheet {
    right: calc((var(--mobile-design-w) - var(--mobile-topbar-w)) / 2) !important;
    width: 242px !important;
  }

  body.mobile-ui .board-wrap {
    width: var(--mobile-board-w) !important;
    margin-top: 2px !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    gap: 0 !important;
  }

  body.mobile-ui .board-stage,
  body.mobile-ui .board-shell {
    width: 100% !important;
  }

  body.mobile-ui .board-shell {
    aspect-ratio: 560 / 840 !important;
  }

  body.mobile-ui #gameCanvas {
    width: 100% !important;
    height: 100% !important;
  }

  body.mobile-ui .mobile-system-row {
    width: var(--mobile-system-w) !important;
    grid-template-columns: 76px minmax(0, 1fr) 76px !important;
    gap: 8px !important;
    margin-top: 16px !important;
  }

  body.mobile-ui .mobile-system-btn,
  body.mobile-ui .mobile-bottom-start {
    min-height: 40px !important;
    padding: 0 8px !important;
    font-size: 0.74rem !important;
    border-radius: 999px !important;
  }

  body.mobile-ui .mobile-system-side {
    padding: 0 8px !important;
  }

  body.mobile-ui .touch-controls {
    width: var(--mobile-touch-w) !important;
    display: grid !important;
    grid-template-columns: 58px 58px 52px 52px 52px !important;
    grid-template-rows: 58px 58px !important;
    justify-content: center !important;
    justify-items: center !important;
    align-items: center !important;
    gap: 10px 7px !important;
    margin: 14px auto 0 !important;
    padding: 0 !important;
  }

  body.mobile-ui .touch-group,
  body.mobile-ui .touch-row {
    display: contents !important;
    gap: 0 !important;
  }

  body.mobile-ui .touch-btn {
    width: 52px !important;
    min-width: 52px !important;
    height: 58px !important;
    border-radius: 15px !important;
  }

  body.mobile-ui .touch-btn.move-btn {
    width: 58px !important;
    min-width: 58px !important;
  }

  body.mobile-ui .touch-btn .emoji {
    font-size: 1.08rem !important;
  }

  body.mobile-ui .touch-btn.move-btn .emoji {
    font-size: 1.36rem !important;
  }

  body.mobile-ui .touch-btn.spin180 .emoji {
    font-size: 0.86rem !important;
  }

  body.mobile-ui .touch-btn .label {
    font-size: 0.46rem !important;
  }
}