:root {
  color-scheme: dark;
  --ink: #eefcff;
  --muted: #8fbcc3;
  --panel: rgba(8, 24, 31, 0.82);
  --line: #35f4dc;
  --board: #1e746f;
  --board-dark: #104b52;
  --accent: #39f5d0;
  --accent-2: #ff4fb8;
  --glow: rgba(57, 245, 208, 0.42);
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.34);
  --piece-font-family: "Tsukushi A Round Gothic", "Tsukushi B Round Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Yu Gothic", "Yu Gothic UI", "Arial Rounded MT Bold", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(rgba(57, 245, 208, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 245, 208, 0.055) 1px, transparent 1px),
    radial-gradient(circle at 18% 12%, rgba(57, 245, 208, 0.28), transparent 28rem),
    radial-gradient(circle at 84% 20%, rgba(255, 79, 184, 0.18), transparent 24rem),
    linear-gradient(135deg, #061116 0%, #0a1f29 48%, #071117 100%);
  background-size: 42px 42px, 42px 42px, auto, auto, auto;
  font-family: var(--piece-font-family);
  font-feature-settings: "palt" 1;
}

body.game-active {
  height: 100dvh;
  overflow: hidden;
}

button {
  font: inherit;
}

.app-shell {
  width: min(1440px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 18px;
  padding: 16px;
}

body.game-active .app-shell {
  height: 100dvh;
  min-height: 0;
  grid-template-columns: minmax(0, 1fr);
  overflow: hidden;
}

.play-area,
.record-panel {
  background: var(--panel);
  border: 1px solid rgba(57, 245, 208, 0.28);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.play-area {
  padding: 16px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.04), 0 0 46px rgba(57, 245, 208, 0.12);
}

body.game-active .play-area {
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

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

body.game-active .topbar {
  justify-content: flex-end;
  flex: 0 0 auto;
}

body.game-active .brand-block {
  display: none;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 0.78rem;
  font-family: var(--piece-font-family);
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
  text-shadow: 0 0 14px var(--glow);
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-family: var(--piece-font-family);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 0.95;
  color: #f6feff;
  text-shadow: 0 0 22px rgba(57, 245, 208, 0.34), 0 2px 0 rgba(255, 79, 184, 0.24);
}

h2 {
  font-family: var(--piece-font-family);
  font-size: 1rem;
  font-weight: 900;
}

.turn-panel {
  min-width: 128px;
  padding: 12px 14px;
  border: 1px solid rgba(57, 245, 208, 0.42);
  border-radius: 8px;
  background: rgba(4, 15, 21, 0.72);
  box-shadow: inset 0 0 18px rgba(57, 245, 208, 0.08), 0 0 22px rgba(57, 245, 208, 0.12);
}

.match-controls {
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
  gap: 10px;
}

.turn-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
}

.turn-panel strong {
  display: block;
  font-size: 1.45rem;
  color: var(--accent);
}

.resign-button {
  min-width: 82px;
  padding: 0 16px;
  border: 1px solid rgba(255, 79, 184, 0.72);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 79, 184, 0.28), rgba(255, 79, 184, 0.1));
  color: var(--ink);
  font-weight: 900;
  cursor: pointer;
}

.event-cutin {
  position: fixed;
  inset: 0;
  z-index: 18;
  display: grid;
  place-items: center;
  padding: 20px;
  pointer-events: none;
}

.event-cutin[hidden] {
  display: none;
}

.event-cutin-card {
  width: min(720px, calc(100vw - 32px));
  min-height: 166px;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  padding: 20px;
  border: 1px solid rgba(57, 245, 208, 0.7);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(57, 245, 208, 0.22), rgba(255, 79, 184, 0.18)),
    rgba(3, 14, 20, 0.9);
  box-shadow:
    inset 0 0 28px rgba(57, 245, 208, 0.12),
    0 0 48px rgba(57, 245, 208, 0.28),
    0 22px 70px rgba(0, 0, 0, 0.44);
  animation: cutinFlash 1.65s ease both;
}

.event-cutin-character {
  position: relative;
  width: 136px;
  height: 136px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(57, 245, 208, 0.72);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 24%, rgba(246, 254, 255, 0.9) 0 8%, transparent 9%),
    radial-gradient(circle at 38% 37%, rgba(255, 79, 184, 0.9) 0 4%, transparent 5%),
    radial-gradient(circle at 62% 37%, rgba(255, 79, 184, 0.9) 0 4%, transparent 5%),
    radial-gradient(circle at 50% 48%, rgba(57, 245, 208, 0.95) 0 23%, transparent 24%),
    linear-gradient(145deg, rgba(57, 245, 208, 0.22), rgba(255, 79, 184, 0.16));
  background-position: center;
  background-size: cover;
  box-shadow:
    inset 0 0 26px rgba(57, 245, 208, 0.18),
    0 0 34px rgba(255, 79, 184, 0.2);
}

.event-cutin-character::before,
.event-cutin-character::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.event-cutin-character::before {
  width: 90px;
  height: 54px;
  left: 23px;
  top: 70px;
  border-radius: 46px 46px 24px 24px;
  background: linear-gradient(135deg, rgba(57, 245, 208, 0.84), rgba(12, 158, 166, 0.5));
  box-shadow: 0 0 22px rgba(57, 245, 208, 0.28);
}

.event-cutin-character::after {
  width: 62px;
  height: 62px;
  left: 37px;
  top: 30px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 37% 42%, #061116 0 7%, transparent 8%),
    radial-gradient(circle at 63% 42%, #061116 0 7%, transparent 8%),
    linear-gradient(180deg, #eefcff, #9ffcf0);
  box-shadow:
    inset 0 -8px 18px rgba(57, 245, 208, 0.18),
    0 0 18px rgba(238, 252, 255, 0.26);
}

.event-cutin[data-image="custom"] .event-cutin-character::before,
.event-cutin[data-image="custom"] .event-cutin-character::after {
  display: none;
}

.event-cutin[data-image="custom"] .event-cutin-character {
  background-color: rgba(3, 14, 20, 0.42);
  background-repeat: no-repeat;
  background-position: center 42%;
  background-size: 150%;
  filter: saturate(1.08) contrast(1.04);
  animation: guideReady 1.65s ease both;
}

.event-cutin-mark {
  position: relative;
  z-index: 2;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  align-self: end;
  justify-self: start;
  margin: 0 0 8px 8px;
  border: 1px solid rgba(57, 245, 208, 0.72);
  border-radius: 50%;
  background: rgba(3, 14, 20, 0.78);
  color: var(--accent);
  font-size: 1.45rem;
  font-weight: 900;
  text-shadow: 0 0 18px rgba(57, 245, 208, 0.52);
}

.event-cutin-mood {
  position: absolute;
  right: 8px;
  bottom: 10px;
  z-index: 2;
  max-width: 82px;
  padding: 4px 8px;
  border: 1px solid rgba(57, 245, 208, 0.48);
  border-radius: 999px;
  background: rgba(3, 14, 20, 0.76);
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 900;
  text-transform: uppercase;
  box-shadow:
    inset 0 0 10px rgba(57, 245, 208, 0.08),
    0 0 18px rgba(57, 245, 208, 0.16);
}

.event-cutin-label {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.event-cutin strong,
.event-cutin span {
  display: block;
}

.event-cutin strong {
  color: #f6feff;
  font-size: clamp(2rem, 8vw, 4.2rem);
  line-height: 0.95;
  text-shadow: 0 0 24px rgba(57, 245, 208, 0.42);
}

.event-cutin div > span {
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
}

.event-cutin[data-event="check"] .event-cutin-card,
.event-cutin[data-event="checkmate"] .event-cutin-card,
.event-cutin[data-event="resign"] .event-cutin-card {
  border-color: rgba(255, 79, 184, 0.78);
  box-shadow:
    inset 0 0 28px rgba(255, 79, 184, 0.14),
    0 0 54px rgba(255, 79, 184, 0.3),
    0 22px 70px rgba(0, 0, 0, 0.44);
}

.event-cutin[data-event="check"] .event-cutin-mark,
.event-cutin[data-event="checkmate"] .event-cutin-mark,
.event-cutin[data-event="resign"] .event-cutin-mark {
  color: var(--accent-2);
  border-color: rgba(255, 79, 184, 0.82);
}

.event-cutin[data-image="placeholder"][data-mood="alert"] .event-cutin-character,
.event-cutin[data-image="placeholder"][data-mood="end"] .event-cutin-character {
  background:
    radial-gradient(circle at 50% 24%, rgba(246, 254, 255, 0.9) 0 8%, transparent 9%),
    radial-gradient(circle at 38% 37%, rgba(57, 245, 208, 0.9) 0 4%, transparent 5%),
    radial-gradient(circle at 62% 37%, rgba(57, 245, 208, 0.9) 0 4%, transparent 5%),
    radial-gradient(circle at 50% 48%, rgba(255, 79, 184, 0.92) 0 23%, transparent 24%),
    linear-gradient(145deg, rgba(255, 79, 184, 0.26), rgba(57, 245, 208, 0.12));
}

.event-cutin[data-image="placeholder"][data-mood="win"] .event-cutin-character,
.event-cutin[data-image="placeholder"][data-mood="spark"] .event-cutin-character {
  background:
    radial-gradient(circle at 30% 26%, rgba(255, 255, 255, 0.86) 0 5%, transparent 6%),
    radial-gradient(circle at 70% 22%, rgba(255, 255, 255, 0.72) 0 4%, transparent 5%),
    radial-gradient(circle at 50% 48%, rgba(255, 79, 184, 0.9) 0 22%, transparent 23%),
    linear-gradient(145deg, rgba(57, 245, 208, 0.22), rgba(255, 79, 184, 0.3));
}

.event-cutin[data-image="placeholder"][data-mood="hit"] .event-cutin-character {
  background:
    radial-gradient(circle at 50% 24%, rgba(246, 254, 255, 0.9) 0 8%, transparent 9%),
    radial-gradient(circle at 50% 48%, rgba(57, 245, 208, 0.92) 0 23%, transparent 24%),
    linear-gradient(145deg, rgba(57, 245, 208, 0.32), rgba(255, 79, 184, 0.12));
}

.event-cutin[data-image="custom"][data-mood="alert"] .event-cutin-character {
  background-position: center 36%;
  background-size: 168%;
  border-color: rgba(255, 79, 184, 0.88);
  filter: saturate(1.28) contrast(1.12) hue-rotate(-8deg);
  box-shadow:
    inset 0 0 24px rgba(255, 79, 184, 0.22),
    0 0 40px rgba(255, 79, 184, 0.34);
  animation: guideAlert 1.65s ease both;
}

.event-cutin[data-image="custom"][data-mood="win"] .event-cutin-character,
.event-cutin[data-image="custom"][data-mood="spark"] .event-cutin-character {
  background-position: center 38%;
  background-size: 158%;
  border-color: rgba(255, 237, 145, 0.86);
  filter: saturate(1.34) contrast(1.08) brightness(1.1);
  box-shadow:
    inset 0 0 26px rgba(255, 237, 145, 0.2),
    0 0 46px rgba(255, 237, 145, 0.26),
    0 0 34px rgba(57, 245, 208, 0.24);
  animation: guideSpark 1.65s ease both;
}

.event-cutin[data-image="custom"][data-mood="hit"] .event-cutin-character {
  background-position: 45% 41%;
  background-size: 174%;
  border-color: rgba(57, 245, 208, 0.9);
  filter: saturate(1.22) contrast(1.1);
  box-shadow:
    inset 0 0 24px rgba(57, 245, 208, 0.2),
    0 0 42px rgba(57, 245, 208, 0.34);
  animation: guideHit 1.65s ease both;
}

.event-cutin[data-image="custom"][data-mood="end"] .event-cutin-character {
  background-position: center 44%;
  background-size: 146%;
  border-color: rgba(170, 128, 255, 0.72);
  filter: saturate(0.88) contrast(1.04) brightness(0.86);
  box-shadow:
    inset 0 0 24px rgba(170, 128, 255, 0.16),
    0 0 36px rgba(170, 128, 255, 0.2);
  animation: guideEnd 1.65s ease both;
}

.event-cutin[data-image="custom"][data-mood="alert"] .event-cutin-mood,
.event-cutin[data-image="custom"][data-mood="end"] .event-cutin-mood {
  color: var(--accent-2);
  border-color: rgba(255, 79, 184, 0.72);
}

.event-cutin[data-image="custom"][data-mood="win"] .event-cutin-mood,
.event-cutin[data-image="custom"][data-mood="spark"] .event-cutin-mood {
  color: #ffe68d;
  border-color: rgba(255, 230, 141, 0.72);
}

@keyframes cutinFlash {
  0% {
    opacity: 0;
    transform: translateX(-28px) scale(0.96);
  }
  14%,
  76% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateX(28px) scale(0.98);
  }
}

@keyframes guideReady {
  0% {
    transform: translateY(8px) scale(0.92);
  }
  22%,
  78% {
    transform: translateY(0) scale(1);
  }
  100% {
    transform: translateY(-3px) scale(0.98);
  }
}

@keyframes guideAlert {
  0% {
    transform: translateX(-8px) scale(0.98) rotate(-3deg);
  }
  18% {
    transform: translateX(5px) scale(1.06) rotate(2deg);
  }
  34%,
  78% {
    transform: translateX(0) scale(1.02) rotate(0deg);
  }
  100% {
    transform: translateX(4px) scale(0.98);
  }
}

@keyframes guideSpark {
  0% {
    transform: scale(0.88) rotate(-4deg);
  }
  24% {
    transform: scale(1.09) rotate(3deg);
  }
  72% {
    transform: scale(1.03) rotate(0deg);
  }
  100% {
    transform: scale(0.98);
  }
}

@keyframes guideHit {
  0% {
    transform: translateX(-12px) scale(0.94);
  }
  18% {
    transform: translateX(8px) scale(1.08);
  }
  46%,
  78% {
    transform: translateX(0) scale(1.01);
  }
  100% {
    transform: translateX(4px) scale(0.98);
  }
}

@keyframes guideEnd {
  0% {
    transform: translateY(-4px) scale(1);
  }
  22%,
  78% {
    transform: translateY(3px) scale(0.98);
  }
  100% {
    transform: translateY(6px) scale(0.96);
  }
}

.start-dialog,
.promotion-dialog,
.end-dialog {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(1, 8, 12, 0.68);
  backdrop-filter: blur(10px);
  overflow: auto;
}

.start-dialog {
  align-items: start;
}

.promotion-dialog {
  display: block;
  padding: 0;
  background: transparent;
  backdrop-filter: none;
  overflow: visible;
}

.start-dialog[hidden],
.promotion-dialog[hidden],
.end-dialog[hidden] {
  display: none;
}

.start-card,
.promotion-card,
.end-card {
  width: min(420px, 100%);
  padding: 22px;
  border: 1px solid rgba(57, 245, 208, 0.48);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 79, 184, 0.14), transparent 48%),
    rgba(5, 18, 24, 0.94);
  box-shadow:
    0 0 36px rgba(57, 245, 208, 0.18),
    0 22px 70px rgba(0, 0, 0, 0.42);
}

.start-card {
  max-height: calc(100dvh - 40px);
  overflow: auto;
}

.promotion-card {
  position: fixed;
  left: var(--promotion-left, 50%);
  top: var(--promotion-top, 50%);
  width: min(260px, calc(100vw - 16px));
  padding: 14px;
}

.promotion-card .eyebrow {
  margin-bottom: 4px;
}

.start-title-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
}

.end-dialog {
  z-index: 22;
}

.end-card {
  max-height: calc(100dvh - 40px);
  overflow: auto;
}

.start-card h2,
.promotion-card h2,
.end-card h2 {
  font-size: clamp(1.8rem, 6vw, 3rem);
  line-height: 1;
  color: #f6feff;
  text-shadow: 0 0 18px rgba(57, 245, 208, 0.34);
}

.start-detail,
.promotion-detail,
.end-result {
  margin: 12px 0 18px;
  color: var(--muted);
}

.end-result {
  color: #f6feff;
  font-size: clamp(2rem, 10vw, 4.4rem);
  font-weight: 900;
  line-height: 1;
  text-shadow: 0 0 22px rgba(57, 245, 208, 0.34), 0 2px 0 rgba(255, 79, 184, 0.24);
}

.promotion-card h2 {
  font-size: 1.45rem;
}

.promotion-detail {
  margin: 8px 0 12px;
}

.mode-select {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}

.cpu-settings {
  width: 100%;
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

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

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

.strength-settings {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 16px;
}

.strength-settings[hidden] {
  display: none;
}

.time-settings {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 16px;
}

.bgm-settings {
  width: 100%;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 14px;
}

.mode-option,
.side-option,
.strength-option,
.time-option,
.bgm-option {
  min-height: 42px;
  border: 1px solid rgba(57, 245, 208, 0.42);
  border-radius: 6px;
  background: rgba(4, 15, 21, 0.68);
  color: var(--ink);
  cursor: pointer;
  font-weight: 800;
}

.mode-option.selected,
.side-option.selected,
.strength-option.selected,
.time-option.selected,
.bgm-option.selected {
  border-color: rgba(255, 79, 184, 0.72);
  background: linear-gradient(180deg, rgba(255, 79, 184, 0.28), rgba(255, 79, 184, 0.1));
}

.promotion-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.start-card button,
.promotion-actions button,
.end-card button {
  min-height: 46px;
  border: 1px solid rgba(57, 245, 208, 0.52);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(57, 245, 208, 0.2), rgba(57, 245, 208, 0.08));
  color: var(--ink);
  cursor: pointer;
  font-weight: 900;
}

#startBtn,
#promoteBtn,
#backToStartBtn {
  border-color: rgba(255, 79, 184, 0.72);
  background: linear-gradient(180deg, rgba(255, 79, 184, 0.28), rgba(255, 79, 184, 0.1));
}

#startBtn,
#backToStartBtn {
  width: 100%;
}

.copy-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}

.copy-kifu-btn {
  min-width: 0;
  border-color: rgba(255, 79, 184, 0.72);
  background: linear-gradient(180deg, rgba(255, 79, 184, 0.28), rgba(255, 79, 184, 0.1));
  white-space: nowrap;
}

.start-card .mode-option,
.start-card .side-option,
.start-card .strength-option,
.start-card .bgm-option {
  border-color: rgba(57, 245, 208, 0.42);
  background: rgba(4, 15, 21, 0.68);
}

.start-card .mode-option.selected,
.start-card .side-option.selected,
.start-card .strength-option.selected,
.start-card .bgm-option.selected {
  border-color: rgba(255, 79, 184, 0.72);
  background: linear-gradient(180deg, rgba(255, 79, 184, 0.28), rgba(255, 79, 184, 0.1));
}

.start-visual {
  flex: 0 0 auto;
  width: 82px;
  height: 82px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(57, 245, 208, 0.42);
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(circle at 50% 28%, rgba(246, 254, 255, 0.18), rgba(57, 245, 208, 0.08) 56%, rgba(5, 18, 24, 0.72));
  box-shadow:
    inset 0 0 24px rgba(57, 245, 208, 0.12),
    0 0 28px rgba(255, 79, 184, 0.18);
}

.start-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}


.game-layout {
  --board-wrap-size: min(calc((100vh - 360px) * 0.91), calc(100vw - 430px), 680px);
  --hand-tile-size: calc((var(--board-wrap-size) - 28px) / 9);
  --hand-row-gap: clamp(3px, 1.4vw, 8px);
  --player-hud-width: clamp(76px, 24vw, 118px);
  --hand-row-tile-size: min(
    var(--hand-tile-size),
    calc(
      (
        var(--board-wrap-size) - var(--player-hud-width) -
        var(--hand-row-gap) - var(--hand-row-gap) - var(--hand-row-gap) - var(--hand-row-gap) -
        var(--hand-row-gap) - var(--hand-row-gap) - var(--hand-row-gap)
      ) / 7
    )
  );
  display: grid;
  grid-template-columns: minmax(320px, var(--board-wrap-size));
  align-items: stretch;
  justify-content: center;
  gap: 12px;
}

body.game-active .game-layout {
  --board-wrap-size: min(calc((100dvh - 210px) * 10 / 13), calc(100vw - 64px), 680px);
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}

.side-panel {
  min-height: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0 0;
  border-top: 3px solid var(--accent);
  background: linear-gradient(180deg, rgba(57, 245, 208, 0.06), transparent 70%);
}

.side-panel.opponent {
  border-color: var(--accent-2);
}

.player-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--hand-row-gap);
}

.self-row {
  grid-template-columns: minmax(0, 1fr) auto;
}

.hand {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: var(--hand-row-tile-size);
  gap: var(--hand-row-gap);
  align-content: start;
  justify-content: start;
  height: var(--hand-row-tile-size);
  overflow-x: visible;
  overflow-y: visible;
}

.self-row .hand {
  justify-content: end;
}

.hand-chip {
  container-type: inline-size;
  position: relative;
  display: grid;
  place-items: center;
  width: var(--hand-row-tile-size);
  height: var(--hand-row-tile-size);
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 1px solid rgba(57, 245, 208, 0.34);
  border-radius: 6px;
  background:
    radial-gradient(circle at 50% 45%, rgba(57, 245, 208, 0.18), transparent 54%),
    rgba(4, 15, 21, 0.82);
  color: var(--ink);
  cursor: pointer;
  overflow: visible;
}

.hand-chip.selected {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.hand-chip:hover {
  background:
    radial-gradient(circle at 50% 45%, rgba(57, 245, 208, 0.28), transparent 58%),
    rgba(4, 15, 21, 0.92);
}

.piece.hand-piece {
  width: 100%;
  font-size: 48cqw;
}

.hand-count {
  position: absolute;
  right: -6px;
  bottom: -6px;
  z-index: 3;
  min-width: 26px;
  height: 26px;
  padding: 0 7px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: 999px;
  background: linear-gradient(180deg, #ff5ab6, #b90b69);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.34);
}

.actions {
  display: grid;
  grid-template-columns: 42px;
  justify-content: start;
  gap: 10px;
  margin-top: auto;
}

.start-card .actions {
  width: 100%;
  grid-template-columns: 76px 64px;
  margin-top: 0;
  margin-bottom: 14px;
}

.actions button {
  min-height: 42px;
  border: 1px solid rgba(57, 245, 208, 0.46);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(57, 245, 208, 0.18), rgba(57, 245, 208, 0.06));
  color: var(--ink);
  cursor: pointer;
  box-shadow: 0 0 18px rgba(57, 245, 208, 0.12);
}

.actions button:not(.icon-button) {
  width: 100%;
  min-width: 0;
  padding: 0 10px;
  white-space: nowrap;
}

.icon-button {
  width: 42px;
  font-size: 1.35rem;
}

#soundBtn {
  width: 76px;
  font-size: 0.78rem;
  letter-spacing: 0;
}

#bgmBtn {
  width: 64px;
  font-size: 0.78rem;
  letter-spacing: 0;
}

.board-wrap {
  order: 2;
  width: var(--board-wrap-size);
  min-width: 320px;
  margin: 0 auto;
}

.player-hud {
  display: flex;
  align-items: center;
  gap: 6px;
  width: var(--player-hud-width);
  height: var(--hand-row-tile-size);
  min-width: 0;
  padding: 4px 8px;
  border: 1px solid rgba(57, 245, 208, 0.48);
  border-radius: 8px;
  background: rgba(3, 12, 18, 0.86);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.04),
    0 10px 24px rgba(0, 0, 0, 0.34),
    0 0 18px rgba(57, 245, 208, 0.16);
  backdrop-filter: blur(8px);
  pointer-events: auto;
}

.self-hud {
  border-color: rgba(255, 79, 184, 0.56);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.04),
    0 10px 24px rgba(0, 0, 0, 0.34),
    0 0 18px rgba(255, 79, 184, 0.16);
}

.player-avatar {
  width: clamp(18px, calc(var(--hand-row-tile-size) - 8px), 42px);
  height: clamp(18px, calc(var(--hand-row-tile-size) - 8px), 42px);
  flex: 0 0 auto;
  border: 1px solid rgba(246, 254, 255, 0.5);
  border-radius: 6px;
  background:
    radial-gradient(circle at 50% 34%, rgba(246, 254, 255, 0.82) 0 18%, transparent 19%),
    radial-gradient(circle at 50% 72%, rgba(57, 245, 208, 0.72) 0 30%, transparent 31%),
    linear-gradient(135deg, rgba(57, 245, 208, 0.28), rgba(255, 79, 184, 0.2)),
    rgba(4, 15, 21, 0.92);
}

.player-clock {
  display: grid;
  gap: 1px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.player-clock span {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
}

.player-clock strong {
  color: #f6feff;
  font-size: clamp(0.72rem, calc(var(--hand-row-tile-size) * 0.32), 1.28rem);
  font-weight: 900;
  text-shadow: 0 0 12px rgba(57, 245, 208, 0.32);
}

.side-panel.opponent {
  order: 1;
}

.side-panel.player {
  order: 3;
}

.files {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  padding-right: 28px;
  color: var(--muted);
  font-family: var(--piece-font-family);
  font-feature-settings: "palt" 1;
  font-weight: 900;
  text-align: center;
}

.board-line {
  display: grid;
  grid-template-columns: 1fr 28px;
  gap: 0;
}

.ranks {
  display: grid;
  grid-template-rows: repeat(9, 1fr);
  align-items: center;
  justify-items: center;
  color: var(--muted);
  font-family: var(--piece-font-family);
  font-feature-settings: "palt" 1;
  font-weight: 900;
}

.board {
  aspect-ratio: 10 / 11;
  width: 100%;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  grid-template-rows: repeat(9, minmax(0, 1fr));
  border: 3px solid var(--line);
  background:
    radial-gradient(circle at center, rgba(57, 245, 208, 0.13), transparent 38%),
    linear-gradient(135deg, #21756f 0%, #1a615f 52%, #16474e 100%);
  box-shadow:
    inset 0 0 0 1px rgba(237, 255, 252, 0.16),
    inset 0 0 34px rgba(0, 0, 0, 0.18),
    0 0 32px rgba(57, 245, 208, 0.24),
    0 18px 30px rgba(0, 0, 0, 0.3);
}

.square {
  container-type: inline-size;
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 1px solid rgba(181, 255, 242, 0.28);
  background: transparent;
  cursor: pointer;
  overflow: visible;
}

.square:hover,
.square.legal {
  background: rgba(57, 245, 208, 0.16);
}

.square.selected {
  background: rgba(158, 226, 255, 0.1);
  box-shadow:
    inset 0 0 0 2px rgba(191, 239, 255, 0.7),
    inset 0 0 12px rgba(191, 239, 255, 0.14);
}

.square.last {
  background: rgba(191, 239, 255, 0.22);
}

.piece {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 104%;
  height: auto;
  aspect-ratio: 1;
  border: 0;
  background: transparent;
  color: #393939;
  display: grid;
  place-items: center;
  font-family: var(--piece-font-family);
  font-size: 48cqw;
  font-feature-settings: "palt" 1;
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.piece-shape {
  position: absolute;
  inset: 0;
  clip-path: polygon(50% 0, 84% 24%, 96% 100%, 4% 100%, 16% 24%);
  border-radius: 0;
  background: linear-gradient(135deg, #41464c 0%, #08090c 45%, #15191e 100%);
  box-shadow:
    inset 0 0 0 2px rgba(255, 255, 255, 0.08),
    inset 0 0 12px rgba(0, 0, 0, 0.42),
    0 2px 5px rgba(0, 0, 0, 0.42),
    0 0 10px rgba(57, 245, 208, 0.14);
}

.piece-shape::before {
  content: "";
  position: absolute;
  inset: 7%;
  clip-path: polygon(50% 0, 84% 24%, 96% 100%, 4% 100%, 16% 24%);
  border-radius: 0;
  background: linear-gradient(135deg, #ff2f9c 0%, #ff5ab6 48%, #b90b69 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 202, 232, 0.34);
}

.piece-shape::after {
  content: "";
  position: absolute;
  inset: 11%;
  clip-path: polygon(50% 0, 84% 24%, 96% 100%, 4% 100%, 16% 24%);
  border-radius: 0;
  background: linear-gradient(135deg, #22272d 0%, #030405 48%, #101418 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.piece-core {
  position: absolute;
  z-index: 1;
  inset: 17%;
  clip-path: polygon(50% 0, 84% 24%, 96% 100%, 4% 100%, 16% 24%);
  border-radius: 0;
  background:
    radial-gradient(circle at 28% 22%, rgba(255, 255, 255, 0.55), transparent 24%),
    linear-gradient(135deg, #a8fff7 0%, #39e8d4 48%, #0b9aa0 100%);
  box-shadow:
    inset 0 0 10px rgba(2, 40, 45, 0.36),
    0 0 8px rgba(57, 245, 208, 0.38);
}

.piece-text {
  position: relative;
  z-index: 2;
  transform: translateY(9%);
  filter: drop-shadow(0 1px 0 rgba(255, 255, 255, 0.34));
  text-shadow:
    0 0 1px rgba(0, 42, 45, 0.72),
    0 0 8px rgba(210, 255, 248, 0.86);
}

.piece.gote {
  transform: translate(-50%, -50%) rotate(180deg);
}

.hand-piece.self-hand-piece {
  transform: translate(-50%, -50%);
}

.hand-piece.opponent-hand-piece {
  transform: translate(-50%, -50%) rotate(180deg);
}

.board.view-gote .piece.sente {
  transform: translate(-50%, -50%) rotate(180deg);
}

.board.view-gote .piece.gote {
  transform: translate(-50%, -50%);
}

.piece.gote .piece-shape {
  background: linear-gradient(135deg, #24272e 0%, #05070a 46%, #11161a 100%);
}

.piece.promoted {
  color: #d90000;
}

.record-panel {
  border-radius: 8px;
  width: 100%;
  padding: 12px;
  overflow: hidden;
  margin: 0 0 12px;
}

.move-list {
  height: min(240px, 34vh);
  margin: 10px 0 0;
  padding-left: 28px;
  overflow: auto;
}

.move-list li {
  padding: 8px 4px;
  border-bottom: 1px solid rgba(57, 245, 208, 0.13);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 1080px) {
  .game-layout {
    --board-wrap-size: min(calc((100vh - 360px) * 0.91), calc(100vw - 64px), 680px);
  }

  body.game-active .game-layout {
    --board-wrap-size: min(calc((100dvh - 210px) * 10 / 13), calc(100vw - 48px), 680px);
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .move-list {
    height: 180px;
  }
}

@media (max-width: 760px) {
  .game-layout {
    --board-wrap-size: min(calc((100vh - 360px) * 0.91), calc(100vw - 56px));
  }

  body.game-active .game-layout {
    --board-wrap-size: min(calc((100dvh - 200px) * 10 / 13), calc(100vw - 40px));
  }

  .app-shell {
    padding: 12px;
  }

  body.game-active .app-shell {
    padding: 8px;
  }

  .play-area,
  .record-panel {
    padding: 14px;
  }

  body.game-active .play-area {
    padding: 10px;
    gap: 8px;
  }

  .topbar {
    align-items: flex-start;
  }

  body.game-active .topbar {
    align-items: stretch;
  }

  .match-controls {
    width: 100%;
  }

  .turn-panel {
    flex: 1 1 auto;
    min-width: 0;
    padding: 8px 10px;
  }

  .resign-button {
    min-width: 68px;
    padding: 0 10px;
  }

  .game-layout {
    grid-template-columns: 1fr;
  }

  .side-panel {
    min-height: auto;
    padding: 10px 0 0;
    border-left: 0;
    border-top: 3px solid var(--accent);
  }

  .side-panel.opponent {
    order: 1;
  }

  .board-wrap {
    order: 2;
    min-width: 0;
    width: min(var(--board-wrap-size), 100%);
  }

  .player-hud {
    gap: 4px;
    padding: 3px 6px;
  }

  .player-avatar {
    width: clamp(18px, calc(var(--hand-row-tile-size) - 8px), 30px);
    height: clamp(18px, calc(var(--hand-row-tile-size) - 8px), 30px);
  }

  .player-clock span {
    font-size: 0.6rem;
  }

  .player-clock strong {
    font-size: 1.05rem;
  }

  .side-panel.player {
    order: 3;
  }

  .hand {
    height: var(--hand-row-tile-size);
  }

  .hand-chip {
    width: var(--hand-row-tile-size);
    height: var(--hand-row-tile-size);
    min-height: 0;
  }

  .actions {
    grid-template-columns: 42px;
  }

  .start-card .actions {
    grid-template-columns: 76px 64px;
  }

  .start-card,
  .promotion-card,
  .end-card {
    padding: 14px;
  }

  .start-card h2,
  .promotion-card h2,
  .end-card h2 {
    font-size: clamp(1.45rem, 8vw, 2.2rem);
  }

  .start-detail,
  .promotion-detail,
  .end-result {
    margin: 8px 0 12px;
  }

  .mode-select,
  .cpu-settings {
    margin-bottom: 10px;
  }

  .start-title-row {
    gap: 10px;
  }

  .start-visual {
    width: 62px;
    height: 62px;
  }

  .move-list {
    height: 160px;
  }

  .actions button:not(.icon-button) {
    grid-column: 1 / -1;
  }

  .hand-count {
    right: -2px;
    bottom: -2px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 0.62rem;
  }

  .event-cutin-card {
    grid-template-columns: 86px minmax(0, 1fr);
    min-height: 118px;
    gap: 12px;
    padding: 14px;
  }

  .event-cutin-character {
    width: 78px;
    height: 78px;
  }

  .event-cutin-character::before {
    width: 52px;
    height: 32px;
    left: 13px;
    top: 40px;
  }

  .event-cutin-character::after {
    width: 38px;
    height: 38px;
    left: 20px;
    top: 17px;
  }

  .event-cutin-mark {
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
  }

  .event-cutin-mood {
    right: 4px;
    bottom: 6px;
    max-width: 52px;
    padding: 3px 5px;
    font-size: 0.5rem;
  }
}