:root {
  --play-screen-height: 700px;
  --play-screen-fit-height: min(var(--play-screen-height), calc(100vh - 12px));
  --bg-top: #eff6ff;
  --bg-bottom: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --surface-accent: #ecfeff;
  --ink: #0f172a;
  --muted: #5b6473;
  --line: #d6deea;
  --line-strong: #9db3cc;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: #ccfbf1;
  --warning: #ca8a04;
  --danger: #b91c1c;
  --success: #166534;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 10px 24px rgba(15, 23, 42, 0.06);
  --fullscreen-play-top-offset: clamp(34px, 5vh, 58px);
}

@supports (height: 100dvh) {
  :root {
    --play-screen-fit-height: min(var(--play-screen-height), calc(100dvh - 12px));
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "BIZ UDPGothic", "Yu Gothic UI", "Hiragino Kaku Gothic ProN", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.09), transparent 24%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

body.is-app-fullscreen[data-phase="playing"] {
  width: 100vw;
  height: 100dvh;
  min-height: 100dvh;
  overflow: hidden;
}

body.is-app-fullscreen[data-phase="playing"] #appRoot {
  width: 100vw;
  height: 100dvh;
  overflow: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select {
  font: inherit;
}

.hidden {
  display: none !important;
}

.fullscreen-guard {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
  cursor: pointer;
}

.fullscreen-guard-card {
  width: min(520px, 92vw);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.92);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
  text-align: center;
}

.fullscreen-guard-kicker {
  display: block;
  margin-bottom: 10px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #99f6e4;
}

.fullscreen-guard-card strong {
  display: block;
  font-size: clamp(1.7rem, 5vw, 2.8rem);
  line-height: 1.2;
}

.fullscreen-guard-card span:last-child {
  display: block;
  margin-top: 14px;
  color: #dbeafe;
  font-weight: 700;
}

.muted {
  color: var(--muted);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(214, 222, 234, 0.9);
}

.topbar h1 {
  margin: 0;
  font-size: 1.15rem;
}

.top-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.floating-status {
  position: fixed;
  top: 12px;
  right: 14px;
  z-index: 30;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
}

.portal-end-btn {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 80;
  max-width: min(360px, calc(100vw - 32px));
  min-height: 42px;
  padding: 10px 16px;
  border: 2px solid #0f172a;
  border-radius: 8px;
  background: #ffcc33;
  color: #0f172a;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.16);
  font-weight: 900;
  line-height: 1.25;
  cursor: pointer;
}

.portal-end-btn:hover {
  background: #ffe28a;
}

.layout,
.admin-main,
.ranking-main {
  width: min(1180px, 94vw);
  margin: 16px auto 36px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  padding: 18px;
}

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

.section-header h2,
.card h2,
.card h3 {
  margin: 0;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-card {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(236, 254, 255, 0.92)),
    var(--surface);
  box-shadow: var(--shadow);
}

.hero-card h2 {
  font-size: 1.5rem;
  line-height: 1.35;
}

.hero-copy {
  margin: 10px 0 0;
  line-height: 1.8;
  color: var(--muted);
}

.hero-side {
  display: grid;
  gap: 14px;
  align-content: start;
}

.hero-meta {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

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

.hero-meta div,
.mini-stats div {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}

.hero-meta dt,
.mini-stats dt {
  font-size: 0.75rem;
  color: var(--muted);
}

.hero-meta dd,
.mini-stats dd {
  margin: 6px 0 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.phase-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.phase-chip {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.phase-chip.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.system-note {
  margin: 0;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(15, 118, 110, 0.08);
  border: 1px solid rgba(15, 118, 110, 0.18);
  color: #134e4a;
  line-height: 1.6;
}

.badge,
.session-badge,
.pill {
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
}

.badge.connected {
  background: #d1fae5;
  color: #065f46;
}

.badge.connecting {
  background: #ffedd5;
  color: #9a3412;
}

.badge.disconnected {
  background: #fee2e2;
  color: #991b1b;
}

.badge.local {
  background: #dbeafe;
  color: #1d4ed8;
}

.session-badge {
  background: rgba(15, 118, 110, 0.09);
  color: var(--accent-strong);
}

.inline-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr)) auto;
  gap: 10px;
  align-items: end;
}

.form-item {
  display: grid;
  gap: 4px;
}

.form-item label {
  font-size: 0.85rem;
  color: var(--muted);
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  background: #fff;
  color: var(--ink);
}

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: 10px;
  padding: 11px 16px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.08s ease, opacity 0.12s ease, background-color 0.12s ease;
}

button:hover,
.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-secondary {
  background: #e2e8f0;
  color: #0f172a;
}

.btn-danger {
  background: #ef4444;
  color: #fff;
}

.btn-danger:hover {
  background: #dc2626;
}

.inline-actions {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.waiting-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 12px;
}

.play-hidden-data {
  display: none;
}

.emphasis-box {
  background: linear-gradient(135deg, rgba(236, 254, 255, 0.8), rgba(255, 255, 255, 0.95));
  border: 1px solid rgba(15, 118, 110, 0.16);
  border-radius: 14px;
  padding: 14px;
}

.waiting-message {
  margin: 0 0 8px;
  font-size: 1.2rem;
  font-weight: 700;
}

.waiting-sub {
  margin: 0;
  color: var(--muted);
}

.mini-stats {
  margin: 0;
  display: grid;
  gap: 10px;
}

.game-head {
  display: grid;
  grid-template-columns: minmax(170px, 220px) minmax(0, 1fr) minmax(170px, 220px);
  gap: 10px;
  align-items: stretch;
}

.kpi {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
  padding: 12px;
}

.kpi.focus {
  background: linear-gradient(135deg, rgba(204, 251, 241, 0.9), rgba(255, 255, 255, 0.95));
}

.time-kpi {
  transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.time-kpi[data-level="warning"] {
  background: linear-gradient(135deg, rgba(255, 237, 213, 0.94), rgba(255, 255, 255, 0.98));
  border-color: rgba(217, 119, 6, 0.28);
  box-shadow: 0 0 0 1px rgba(245, 158, 11, 0.08);
}

.kpi .label {
  font-size: 0.84rem;
  color: var(--muted);
}

.kpi .value {
  margin-top: 6px;
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1;
}

.time-kpi[data-level="warning"] .value {
  color: #d97706;
}

.time-kpi[data-level="danger"] {
  background: linear-gradient(135deg, rgba(254, 226, 226, 0.96), rgba(255, 255, 255, 0.98));
  border-color: rgba(220, 38, 38, 0.26);
  box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.08);
}

.time-kpi[data-level="danger"] .value {
  color: #dc2626;
}

.combo-kpi {
  position: relative;
  overflow: hidden;
  text-align: right;
}

.combo-kpi .label {
  text-align: right;
}

.combo-value {
  display: inline-block;
  transition: color 0.18s ease, font-size 0.18s ease, transform 0.18s ease, text-shadow 0.18s ease;
}

.combo-effect-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.combo-particle {
  position: absolute;
  width: var(--size);
  height: var(--size);
  left: 0;
  top: 0;
  opacity: 0;
  animation: combo-particle-burst 760ms ease-out forwards;
}

.combo-particle--saved {
  background: radial-gradient(circle, rgba(240, 253, 244, 0.98) 0%, rgba(34, 197, 94, 0.86) 58%, rgba(34, 197, 94, 0) 72%);
  border-radius: 999px;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.46);
}

.combo-particle--lost {
  background: radial-gradient(circle, rgba(254, 242, 242, 0.98) 0%, rgba(239, 68, 68, 0.9) 56%, rgba(239, 68, 68, 0) 72%);
  border-radius: 999px;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.42);
}

.combo-kpi[data-lock="true"] {
  background: linear-gradient(135deg, rgba(254, 240, 138, 0.92), rgba(255, 255, 255, 0.98));
  border-color: rgba(245, 158, 11, 0.42);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.12), 0 0 24px rgba(245, 158, 11, 0.16);
}

.combo-kpi[data-lock="true"] .combo-value {
  background: none !important;
  -webkit-background-clip: border-box;
  background-clip: border-box;
  color: #92400e !important;
  text-shadow: 0 0 10px rgba(245, 158, 11, 0.18);
  animation: none !important;
}

.combo-kpi[data-feedback="saved"] {
  background: linear-gradient(135deg, rgba(220, 252, 231, 0.96), rgba(255, 255, 255, 0.98));
  border-color: rgba(34, 197, 94, 0.45);
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.14), 0 0 26px rgba(34, 197, 94, 0.18);
}

.combo-kpi[data-feedback="saved"] .combo-value {
  background: none !important;
  -webkit-background-clip: border-box;
  background-clip: border-box;
  color: #15803d !important;
  text-shadow: 0 0 14px rgba(34, 197, 94, 0.28);
  animation: none !important;
}

.combo-kpi[data-feedback="lost"] {
  background: linear-gradient(135deg, rgba(254, 226, 226, 0.96), rgba(255, 255, 255, 0.98));
  border-color: rgba(239, 68, 68, 0.46);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.14), 0 0 26px rgba(239, 68, 68, 0.18);
}

.combo-kpi[data-feedback="lost"] .combo-value {
  background: none !important;
  -webkit-background-clip: border-box;
  background-clip: border-box;
  color: #dc2626 !important;
  text-shadow: 0 0 14px rgba(239, 68, 68, 0.24);
  animation: none !important;
}

.combo-kpi[data-tier="1"] .combo-value {
  color: #d97706;
  font-size: 1.75rem;
}

.combo-kpi[data-tier="2"] .combo-value {
  color: #db2777;
  font-size: 1.95rem;
  transform: scale(1.04);
}

.combo-kpi[data-tier="3"] .combo-value {
  color: #2563eb;
  font-size: 2.2rem;
  transform: scale(1.08);
  text-shadow: 0 0 12px rgba(37, 99, 235, 0.22);
}

.combo-kpi[data-tier="4"] .combo-value {
  font-size: 2.65rem;
  transform: scale(1.12);
  background: linear-gradient(90deg, #ef4444, #f59e0b, #10b981, #3b82f6, #a855f7, #ef4444);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: combo-rainbow 2s linear infinite;
}

.prompt-box {
  position: relative;
  min-width: 0;
  margin-top: 0;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #fbfdff, #f4f8fc);
  text-align: center;
  display: grid;
  gap: 4px;
  overflow: hidden;
}

.prompt-text {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  margin: 0;
  font-size: 1.42rem;
  font-weight: 800;
  line-height: 1.35;
  overflow: hidden;
  white-space: nowrap;
}

.prompt-subline {
  margin-top: 0;
}

.prompt-line {
  margin: 0;
  line-height: 1.35;
  word-break: break-word;
}

.prompt-reading,
.prompt-romaji {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.prompt-typed,
.prompt-flash,
.prompt-current {
  display: inline;
}

.prompt-reading {
  font-size: 1.14rem;
}

.prompt-romaji {
  font-size: 1.02rem;
  font-family: "Cascadia Mono", "Consolas", monospace;
}

.prompt-typed {
  color: #94a3b8;
}

.prompt-flash {
  color: #15803d;
  font-weight: 800;
}

.prompt-current {
  color: #d97706;
  font-weight: 800;
}

.prompt-current[data-state="idle"] {
  color: #d97706;
}

.prompt-current[data-state="done"] {
  color: #94a3b8;
}

.prompt-remaining {
  color: #334155;
}

.prompt-reading {
  margin: 0;
  color: #334155;
}

.prompt-effect-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 3;
}

.prompt-particle {
  position: absolute;
  width: var(--size);
  height: var(--size);
  left: 0;
  top: 0;
  opacity: 0;
  animation: prompt-particle-burst 620ms ease-out forwards;
}

.prompt-particle--shard {
  background: linear-gradient(135deg, #dcfce7, #86efac);
  border-radius: 1px;
}

.prompt-particle--spark {
  background: radial-gradient(circle, #f0fdf4 0%, #22c55e 58%, rgba(34, 197, 94, 0) 70%);
  border-radius: 999px;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.4);
}

.prompt-particle--clear {
  background: linear-gradient(135deg, rgba(241, 245, 249, 0.96), rgba(203, 213, 225, 0.72));
  border-radius: 999px;
  box-shadow: 0 0 10px rgba(226, 232, 240, 0.55);
}

.miss-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 2px;
  background: rgba(255, 255, 255, 0.8);
}

.miss-kana,
.miss-romaji {
  color: #dc2626;
  font-weight: 900;
  line-height: 1.05;
}

.miss-kana {
  font-size: clamp(2.1rem, 3vw, 2.8rem);
}

.miss-romaji {
  font-size: clamp(1.5rem, 2vw, 2rem);
  font-family: "Cascadia Mono", "Consolas", monospace;
  text-transform: lowercase;
}

.miss-romaji-typed {
  color: #94a3b8;
}

.miss-romaji-rest,
.miss-romaji-sep {
  color: #dc2626;
}

.miss-help {
  color: #991b1b;
  font-size: 0.8rem;
  font-weight: 700;
}

.prompt-box.miss-active .prompt-text,
.prompt-box.miss-active .prompt-line {
  opacity: 0.16;
}

.guide-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.next-keys {
  margin: 0;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  padding: 10px 12px;
  color: var(--muted);
}

.stats-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(6, minmax(120px, 1fr));
  gap: 8px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 10px;
}

.stat dt {
  font-size: 0.78rem;
  color: var(--muted);
}

.stat dd {
  margin: 5px 0 0;
  font-size: 1.18rem;
  font-weight: 800;
}

.keyboard-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1200 / 520;
  min-height: 332px;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.98), rgba(226, 232, 240, 0.94)),
    linear-gradient(180deg, #f8fafc, #eef2f7);
}

.keyboard-base {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  opacity: 0.4;
  pointer-events: none;
}

.play-sprite-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
}

.keyboard-grid {
  position: absolute;
  inset: 0;
  z-index: 2;
}

.finger-arrow-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
  overflow: visible;
}

.key {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 0;
  border-radius: 10px;
  border: 1px solid #cbd5e1;
  background: rgba(255, 255, 255, 0.9);
  color: #334155;
  text-align: center;
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-weight: 700;
  font-size: clamp(0.88rem, 1.24vw, 1.14rem);
  box-shadow: inset 0 -2px 0 rgba(148, 163, 184, 0.18);
  transition: transform 0.08s ease, background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.key-label {
  position: relative;
  z-index: 1;
}

.key-home-base .key-label {
  visibility: hidden;
}

.key-home-base.key-next,
.key-home-base.key-next-alert,
.key-home-base.key-active,
.key-home-base.key-miss,
.key-home-base.key-miss-lock {
  z-index: 2 !important;
}

.key-space {
  font-size: clamp(1rem, 1.28vw, 1.2rem);
}

.key-next {
  background: #fef3c7;
  border-color: #f59e0b;
  color: #7c3aed;
  z-index: 6;
  transform: translateY(-1px);
}

.key-next .key-label {
  color: #7c3aed;
  font-size: 1.34em;
  font-weight: 900;
  text-shadow: 0 0 14px rgba(124, 58, 237, 0.24);
}

.key-next-alert {
  border-width: 3px;
  font-weight: 900;
  font-size: 1.08em;
  z-index: 7;
  transform: translateY(-2px) scale(1.06);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.14), 0 0 18px rgba(245, 158, 11, 0.34);
  animation: key-next-alert 420ms ease-in-out infinite;
}

.key-next-alert .key-label {
  color: #6d28d9;
  font-size: 1.44em;
}

.key-active {
  background: #bbf7d0;
  border-color: #15803d;
  color: #14532d;
}

.key-miss {
  background: #fecaca;
  border-color: #b91c1c;
  color: #7f1d1d;
}

.key-miss-lock {
  background: #fecaca;
  border-color: #b91c1c;
  color: #7f1d1d;
  border-width: 3px;
  font-weight: 900;
  box-shadow: 0 0 0 2px rgba(220, 38, 38, 0.12), 0 0 16px rgba(220, 38, 38, 0.35);
}

.hands-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.62;
  pointer-events: none;
  z-index: 3;
}

.home-row-label-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 4;
}

.home-row-label {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  color: #334155;
  text-align: center;
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-weight: 700;
  font-size: clamp(0.88rem, 1.24vw, 1.14rem);
  line-height: 1;
  text-shadow: 0 0 1px rgba(255, 255, 255, 0.25);
}

.hand-anchor-layer {
  opacity: 0;
  transition: opacity 0.14s ease;
}

.hand-anchor-layer.visible {
  opacity: 1;
}

.hand-anchor {
  fill: rgba(239, 68, 68, 0.16);
  stroke: rgba(220, 38, 38, 0.95);
  stroke-width: 2;
}

.finger-dots {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 6;
}

.next-key-overlay {
  position: absolute;
  transform: translate(-50%, -54%);
  pointer-events: none;
  z-index: 10;
}

.next-key-overlay-label {
  display: inline-block;
  color: #6d28d9;
  font-size: clamp(1.5rem, 3vw, 2.7rem);
  line-height: 1;
  font-weight: 950;
  letter-spacing: 0.02em;
  text-shadow:
    0 0 14px rgba(255, 255, 255, 0.95),
    0 0 22px rgba(196, 181, 253, 0.9),
    0 0 34px rgba(124, 58, 237, 0.55);
  -webkit-text-stroke: 1.4px rgba(255, 255, 255, 0.9);
}

.next-key-overlay-label.space {
  font-size: clamp(1rem, 1.9vw, 1.5rem);
  letter-spacing: 0.08em;
}

.next-key-overlay.alert .next-key-overlay-label {
  color: #5b21b6;
  font-size: clamp(1.75rem, 3.45vw, 3.1rem);
  text-shadow:
    0 0 18px rgba(255, 255, 255, 0.98),
    0 0 28px rgba(216, 180, 254, 0.95),
    0 0 42px rgba(124, 58, 237, 0.72);
  animation: next-key-overlay-pulse 460ms ease-in-out infinite;
}

.next-key-overlay.alert .next-key-overlay-label.space {
  font-size: clamp(1.12rem, 2.1vw, 1.72rem);
}

.finger-dot {
  position: absolute;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  width: 10px;
  height: 10px;
  border: 1.5px solid rgba(148, 163, 184, 0.58);
  background: rgba(241, 245, 249, 0.6);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.24);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease, border-color 0.12s ease;
}

.finger-dot.active {
  background: #fde68a;
  border-color: #f59e0b;
  transform: translate(-50%, -50%) scale(1.28);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.16), 0 0 14px rgba(245, 158, 11, 0.34);
}

.layout-debug-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 11;
  pointer-events: none;
}

.layout-debug-panel {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 12;
  min-width: 260px;
  max-width: min(34vw, 420px);
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(59, 130, 246, 0.28);
  background: rgba(15, 23, 42, 0.82);
  color: #e2e8f0;
  font: 700 12px/1.45 "Cascadia Mono", "Consolas", monospace;
  white-space: pre-wrap;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.22);
}

.finger-arrow-track,
.finger-arrow-flow {
  fill: none;
  stroke-linecap: round;
}

.finger-arrow-track {
  stroke: rgba(220, 38, 38, 0.6);
  stroke-width: 10;
  filter: drop-shadow(0 0 10px rgba(220, 38, 38, 0.24));
}

.finger-arrow-flow {
  stroke: rgba(254, 226, 226, 0.92);
  stroke-width: 10;
  stroke-dasharray: 56 200;
  animation: finger-arrow-flow 840ms linear infinite;
}

.finger-arrow-origin {
  fill: rgba(220, 38, 38, 0.36);
}

.finger-arrow-target {
  fill: rgba(254, 226, 226, 0.42);
  stroke: rgba(220, 38, 38, 0.72);
  stroke-width: 2.5;
}

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

body[data-phase="playing"] .hero-card {
  display: none;
}

body[data-phase="auth"] .hero-card {
  display: none;
}

body[data-phase="result"] .hero-card {
  display: none;
}

body[data-phase="auth"] .student-layout {
  width: min(520px, 94vw);
  min-height: calc(100vh - 120px);
  align-content: center;
}

body[data-phase="playing"] .student-layout {
  width: min(1380px, calc(100vw - 4px));
  grid-template-columns: minmax(0, 1fr) 280px;
  grid-template-rows: auto minmax(0, 1fr);
  height: var(--play-screen-fit-height);
  gap: 6px;
  margin-top: 2px;
  margin-bottom: 2px;
}

body.is-app-fullscreen[data-phase="playing"] .student-layout {
  width: min(1380px, calc(100vw - 16px));
  height: min(var(--play-screen-height), calc(100dvh - var(--fullscreen-play-top-offset) - 16px));
  margin-top: var(--fullscreen-play-top-offset);
  margin-bottom: 0;
}

body[data-phase="playing"] #gamePanel,
body[data-phase="playing"] #keyboardPanel,
body[data-phase="playing"] #chatPanel {
  padding: 8px 10px;
}

body[data-phase="playing"] #gamePanel,
body[data-phase="playing"] #keyboardPanel {
  border-color: #050706;
  border-radius: 6px;
  background:
    linear-gradient(0deg, rgba(5, 7, 6, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5, 7, 6, 0.03) 1px, transparent 1px),
    #f4f0de;
  background-size: 26px 26px, 26px 26px, auto;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.28);
}

body[data-phase="playing"] #gamePanel {
  grid-column: 1;
  grid-row: 1;
}

body[data-phase="playing"] #keyboardPanel {
  grid-column: 1;
  grid-row: 2;
}

body[data-phase="playing"] #chatPanel {
  grid-column: 2;
  grid-row: 1 / span 2;
  min-height: 0;
  display: flex;
  margin-bottom: 58px;
  padding: 0;
  overflow: hidden;
  color: #f8fff9;
  background:
    linear-gradient(0deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(145deg, #050706 0%, #111812 58%, #092618 100%);
  background-size: 28px 28px, 28px 28px, auto;
  border: 4px solid #050706;
  border-radius: 6px;
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.42);
}

body[data-phase="playing"] .game-head {
  grid-template-columns: minmax(160px, 205px) minmax(0, 1fr) minmax(160px, 205px);
  margin-bottom: 4px;
}

body[data-phase="playing"] .kpi {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 8px 12px 10px;
  color: #f8fff9;
  border: 1px solid #050706;
  border-radius: 6px;
  background:
    linear-gradient(0deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(135deg, #052514 0%, #064326 58%, #0a1710 100%);
  background-size: 20px 20px, 20px 20px, auto;
  box-shadow:
    inset 0 0 0 3px #050706,
    5px 5px 0 rgba(0, 0, 0, 0.38);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

body[data-phase="playing"] .kpi::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -24px;
  right: -18px;
  width: 58px;
  height: 120px;
  background: #14e878;
  border: 4px solid #050706;
  transform: skewX(-18deg) rotate(8deg);
  opacity: 0.92;
}

body[data-phase="playing"] .time-kpi,
body[data-phase="playing"] .combo-kpi {
  text-align: center;
}

body[data-phase="playing"] .kpi .label {
  position: relative;
  z-index: 1;
  width: 100%;
  margin: 0 0 6px;
  color: #9dffd0;
  font-size: 0.92rem;
  font-weight: 1000;
  line-height: 1;
  text-align: center;
  transform: translateY(-2px);
}

body[data-phase="playing"] .time-kpi .value,
body[data-phase="playing"] .combo-kpi .value {
  position: relative;
  z-index: 1;
  width: 100%;
  color: #ffffff;
  text-align: center;
  font-size: clamp(3rem, 4.35vw, 4.1rem);
  line-height: 0.86;
  margin-top: 0;
  text-shadow:
    2px 2px 0 #050706,
    0 0 18px rgba(20, 232, 120, 0.32);
}

body[data-phase="playing"] .time-kpi .value {
  font-size: clamp(2.84rem, 4.12vw, 3.9rem);
}

body[data-phase="playing"] .combo-kpi .combo-value {
  color: #ffd84f;
}

body[data-phase="playing"] .time-kpi[data-level="warning"] {
  background:
    linear-gradient(0deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(135deg, #372905 0%, #63520f 58%, #0a1710 100%);
}

body[data-phase="playing"] .time-kpi[data-level="warning"]::before {
  background: #ffd84f;
}

body[data-phase="playing"] .time-kpi[data-level="warning"] .value {
  color: #ffd84f;
}

body[data-phase="playing"] .time-kpi[data-level="danger"] {
  background:
    linear-gradient(0deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(135deg, #370610 0%, #6f1020 58%, #0a1710 100%);
}

body[data-phase="playing"] .time-kpi[data-level="danger"]::before {
  background: #ff3659;
}

body[data-phase="playing"] .time-kpi[data-level="danger"] .value {
  color: #ffffff;
}

body[data-phase="playing"] .combo-kpi[data-tier="1"] .combo-value {
  font-size: clamp(3.15rem, 4.55vw, 4.28rem);
}

body[data-phase="playing"] .combo-kpi[data-tier="2"] .combo-value {
  font-size: clamp(3.3rem, 4.78vw, 4.52rem);
}

body[data-phase="playing"] .combo-kpi[data-tier="3"] .combo-value {
  font-size: clamp(3.48rem, 5.05vw, 4.82rem);
}

body[data-phase="playing"] .combo-kpi[data-tier="4"] .combo-value {
  font-size: clamp(3.72rem, 5.35vw, 5.15rem);
}

body[data-phase="playing"] .prompt-box {
  border: 1px solid #050706;
  border-radius: 6px;
  background:
    linear-gradient(90deg, rgba(20, 232, 120, 0.14), transparent 46%),
    linear-gradient(0deg, rgba(5, 7, 6, 0.035) 1px, transparent 1px),
    #f4f0de;
  background-size: auto, 22px 22px, auto;
  box-shadow:
    inset 0 0 0 3px #050706,
    5px 5px 0 rgba(0, 0, 0, 0.28);
  padding: 12px 10px;
  gap: 2px;
}

body[data-phase="playing"] .prompt-text {
  color: #111111;
  font-size: clamp(1.34rem, 1.82vw, 1.82rem);
  line-height: 1.28;
}

body[data-phase="playing"] .prompt-reading {
  color: #0d4a2a;
  font-size: clamp(1.08rem, 1.2vw, 1.22rem);
}

body[data-phase="playing"] .prompt-romaji {
  color: #0f172a;
  font-size: clamp(1rem, 1.08vw, 1.08rem);
}

body.miss-shake #appRoot {
  animation: screen-shake 380ms linear;
}

body[data-phase="playing"] #keyboardPanel {
  display: flex;
  min-height: 0;
  align-items: stretch;
}

body[data-phase="playing"] .keyboard-stage {
  flex: 1;
  width: auto;
  max-width: 100%;
  min-height: 0;
  height: 100%;
  margin: 0 auto;
  border-color: #050706;
  border-radius: 6px;
  box-shadow:
    inset 0 0 0 3px rgba(5, 7, 6, 0.22),
    5px 5px 0 rgba(0, 0, 0, 0.22);
}

.chat-panel-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 0;
  background:
    linear-gradient(112deg, rgba(20, 232, 120, 0.16), transparent 42%),
    rgba(5, 7, 6, 0.86);
}

.chat-panel-inner::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(157, 255, 208, 0.34);
  pointer-events: none;
}

.chat-panel-header {
  position: relative;
  z-index: 1;
  padding: 14px 14px 12px;
  border-bottom: 4px solid #050706;
  background: #f4f0de;
  color: #111111;
}

.chat-panel-header .eyebrow {
  display: inline-block;
  width: fit-content;
  margin: 0 0 8px;
  padding: 5px 8px;
  color: #ffffff;
  background: #050706;
  border-left: 6px solid #14e878;
  font-size: 0.72rem;
  font-weight: 1000;
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
}

.chat-panel-header h3 {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 1000;
  line-height: 1;
}

.chat-list {
  position: relative;
  z-index: 1;
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 12px 16px;
  scrollbar-color: #14e878 #050706;
}

.chat-list::-webkit-scrollbar {
  width: 10px;
}

.chat-list::-webkit-scrollbar-track {
  background: #050706;
}

.chat-list::-webkit-scrollbar-thumb {
  background: #14e878;
  border: 3px solid #050706;
}

.chat-message {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 100%;
  animation: chat-message-pop 180ms ease-out;
}

.chat-message--self {
  align-items: flex-end;
  padding-left: 20px;
}

.chat-message--other {
  align-items: flex-start;
  padding-right: 20px;
}

.chat-name {
  max-width: 100%;
  padding: 0 2px;
  color: #9dffd0;
  font-size: 0.74rem;
  font-weight: 1000;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.chat-message--self .chat-name {
  color: #ffd84f;
  text-align: right;
}

.chat-message--other .chat-name {
  color: #9dffd0;
  text-align: left;
}

.chat-bubble {
  position: relative;
  z-index: 0;
  isolation: isolate;
  --chat-bubble-fill: #f4f0de;
  --chat-bubble-bg: var(--chat-bubble-fill);
  --chat-bubble-shape: polygon(0 10px, 20px 8px, 7px 0, 58px 11px, calc(100% - 16px) 6px, 100% 16px, calc(100% - 11px) 100%, 18px 100%, 0 calc(100% - 10px));
  max-width: calc(100% - 8px);
  padding: 13px 14px 10px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #111111;
  font-size: 0.9rem;
  font-weight: 900;
  line-height: 1.45;
  word-break: break-word;
  filter: drop-shadow(5px 5px 0 rgba(0, 0, 0, 0.42));
}

.chat-bubble::before,
.chat-bubble::after {
  content: "";
  position: absolute;
  width: auto;
  height: auto;
  pointer-events: none;
  -webkit-clip-path: var(--chat-bubble-shape);
  clip-path: var(--chat-bubble-shape);
}

.chat-bubble::before {
  inset: 0;
  z-index: -2;
  background: #050706;
}

.chat-bubble::after {
  inset: 3px;
  z-index: -1;
  background: var(--chat-bubble-bg);
}

.chat-message--self .chat-bubble {
  --chat-bubble-fill: #ffffff;
  --chat-bubble-bg:
    linear-gradient(100deg, rgba(255, 216, 79, 0.36), transparent 58%),
    var(--chat-bubble-fill);
  --chat-bubble-shape: polygon(100% 10px, calc(100% - 20px) 8px, calc(100% - 7px) 0, calc(100% - 58px) 11px, 16px 6px, 0 16px, 11px 100%, calc(100% - 18px) 100%, 100% calc(100% - 10px));
}

.chat-message--other .chat-bubble {
  --chat-bubble-fill: #f4f0de;
  --chat-bubble-bg:
    linear-gradient(102deg, rgba(20, 232, 120, 0.24), transparent 48%),
    var(--chat-bubble-fill);
}

.chat-message--achievement .chat-bubble {
  --chat-bubble-fill: #ffffff;
  --chat-bubble-bg:
    linear-gradient(102deg, rgba(20, 232, 120, 0.44), transparent 58%),
    var(--chat-bubble-fill);
  color: #063d22;
}

.chat-message--critical-miss .chat-bubble {
  --chat-bubble-fill: #ffffff;
  --chat-bubble-bg:
    linear-gradient(102deg, rgba(255, 54, 89, 0.24), transparent 58%),
    var(--chat-bubble-fill);
  color: #8a1024;
}

.chat-message--achievement-max .chat-bubble {
  --chat-bubble-fill: #ffffff;
  --chat-bubble-bg:
    linear-gradient(90deg, rgba(239, 68, 68, 0.16), rgba(245, 158, 11, 0.18), rgba(16, 185, 129, 0.2), rgba(59, 130, 246, 0.16), rgba(168, 85, 247, 0.16), rgba(239, 68, 68, 0.16)),
    var(--chat-bubble-fill);
  color: #111111;
  text-shadow: 0 0 10px rgba(168, 85, 247, 0.18);
}

.chat-message--achievement-max .chat-bubble::after {
  background-size: 240% 100%;
  animation: combo-rainbow 2.2s linear infinite;
}

body[data-phase="result"] #appRoot,
body[data-phase="result"] .layout,
body[data-phase="result"] .student-layout {
  width: 100vw !important;
  max-width: 100vw !important;
  min-width: 0;
  margin: 0 !important;
  padding: 0;
}

body[data-phase="result"] .student-layout {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  height: var(--play-screen-fit-height);
  gap: 0;
}

body[data-phase="result"] .result-stage {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
}

body[data-phase="result"] #resultPanel {
  padding: 0;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  background: #060a14;
  border-color: rgba(0, 255, 255, 0.14);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.46);
}

.ready-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(2, 6, 23, 0.58);
  backdrop-filter: blur(2px);
}

.ready-inner {
  position: relative;
  width: min(100%, 1200px);
  text-align: center;
}

.ready-title {
  margin: 0;
  color: rgba(248, 250, 252, 0.98);
  font-size: clamp(5rem, 18vw, 15rem);
  font-weight: 900;
  letter-spacing: 0.12em;
  line-height: 0.9;
  text-shadow: 0 0 28px rgba(255, 255, 255, 0.16), 0 0 64px rgba(59, 130, 246, 0.12);
  animation: ready-pulse 1.15s ease-in-out infinite;
}

.ready-hint {
  margin-top: 18px;
  color: rgba(226, 232, 240, 0.94);
  font-size: clamp(1rem, 2.4vw, 1.8rem);
  font-weight: 700;
  letter-spacing: 0.22em;
}

.ready-option {
  position: fixed;
  left: 22px;
  bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.48);
  border: 1px solid rgba(226, 232, 240, 0.18);
  color: rgba(241, 245, 249, 0.96);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: left;
  backdrop-filter: blur(4px);
  z-index: 81;
}

.ready-option-input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: #22c55e;
}

.ready-session-bar {
  position: fixed;
  top: 18px;
  right: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: calc(100vw - 44px);
  z-index: 82;
}

.ready-auth-identity {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(226, 232, 240, 0.26);
  background: rgba(15, 23, 42, 0.62);
  color: rgba(241, 245, 249, 0.96);
  font-size: 0.84rem;
  font-weight: 700;
  backdrop-filter: blur(2px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: min(52vw, 360px);
}

.ready-logout-btn {
  position: static;
  border-radius: 999px;
  padding: 8px 14px;
  border: 1px solid rgba(226, 232, 240, 0.36);
  background: rgba(15, 23, 42, 0.62);
  color: #f8fafc;
  font-size: 0.88rem;
  font-weight: 800;
  backdrop-filter: blur(2px);
}

.ready-auth-panel {
  position: fixed;
  left: 22px;
  bottom: 68px;
  width: min(760px, calc(100vw - 44px));
  display: grid;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.62);
  border: 1px solid rgba(226, 232, 240, 0.2);
  color: rgba(241, 245, 249, 0.96);
  backdrop-filter: blur(4px);
  z-index: 81;
}

.ready-auth-configured,
.ready-auth-setup {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.ready-auth-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(226, 232, 240, 0.95);
}

.ready-auth-input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.ready-auth-input-row input {
  min-width: 220px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.52);
  background: rgba(15, 23, 42, 0.82);
  color: #f8fafc;
}

.ready-auth-hint {
  margin: 0;
  font-size: 0.84rem;
  color: rgba(226, 232, 240, 0.88);
}

.outside-auth-card {
  width: min(420px, 100%);
  margin: 28px auto 0;
  padding: 20px;
}

.outside-auth-card .section-header {
  justify-content: center;
  margin-bottom: 10px;
  text-align: center;
}

.outside-auth-card .section-header h2 {
  font-size: 1.28rem;
}

.outside-auth-step {
  display: grid;
  gap: 12px;
}

.outside-auth-form {
  display: grid;
  gap: 10px;
}

.outside-auth-form button,
.outside-auth-actions button {
  width: 100%;
}

.outside-auth-session-card {
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
}

.outside-auth-session-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.outside-auth-session-value {
  display: block;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
  font-family: "Cascadia Mono", "Consolas", monospace;
}

.outside-auth-actions {
  display: grid;
  gap: 8px;
}

.outside-auth-target {
  margin: 0;
  color: #334155;
  font-weight: 700;
  text-align: center;
}

.result-panel-actions,
.admin-controls,
.ranking-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.result-stage {
  position: relative;
  height: 100%;
  min-height: 0;
  aspect-ratio: 1350 / 700;
  overflow: hidden;
  border-radius: 18px;
  background: #0a0e1a;
  box-shadow:
    inset 0 0 0 1px rgba(0, 255, 255, 0.12),
    0 26px 64px rgba(0, 0, 0, 0.42);
}

.result-bg-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.result-intro,
.result-confetti-layer {
  position: absolute;
  inset: 0;
}

.result-sprite-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.result-intro {
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at center, rgba(10, 14, 26, 0.6), rgba(10, 14, 26, 0.94)),
    rgba(10, 14, 26, 0.92);
  transition: opacity 0.36s ease, transform 0.36s ease;
}

.result-intro.is-exit {
  opacity: 0;
  transform: scale(1.04);
}

.result-intro-text {
  font-size: clamp(5.8rem, 19vw, 12rem);
  font-weight: 900;
  letter-spacing: 0.18em;
  color: #ffcc00;
  text-shadow:
    0 0 10px rgba(255, 204, 0, 0.48),
    0 0 32px rgba(255, 204, 0, 0.28),
    0 0 72px rgba(0, 255, 255, 0.22);
  animation: result-intro-pulse 1s ease-in-out infinite;
}

.result-confetti-layer {
  z-index: 4;
  pointer-events: none;
  overflow: hidden;
}

.result-shell {
  position: relative;
  z-index: 3;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.34s ease, transform 0.34s ease;
}

.result-shell.is-live {
  opacity: 1;
  transform: translateY(0);
}

.result-hud-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.result-overlay {
  position: absolute;
  right: 34px;
  bottom: 22px;
  z-index: 6;
  display: grid;
  justify-items: end;
  gap: 10px;
  width: min(56%, 720px);
}

.result-info {
  display: grid;
  gap: 4px;
  justify-items: end;
  min-height: 2.4em;
  color: rgba(230, 246, 255, 0.88);
  font-size: 0.88rem;
  font-weight: 700;
  text-align: right;
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.16);
}

.result-info:empty {
  display: none;
}

.result-auth-panel {
  display: grid;
  gap: 8px;
  justify-items: start;
  width: min(100%, 620px);
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(0, 255, 255, 0.22);
  background: rgba(8, 14, 30, 0.64);
  box-shadow: 0 0 22px rgba(0, 255, 255, 0.1);
}

.result-auth-floating {
  position: absolute;
  left: 44px;
  bottom: 40px;
  z-index: 8;
  width: min(58%, 720px);
}

.result-auth-configured,
.result-auth-setup {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
}

.result-auth-label {
  font-size: 0.82rem;
  color: rgba(220, 244, 255, 0.92);
  font-weight: 700;
}

.result-auth-input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-start;
  width: 100%;
}

.result-auth-input-row input {
  width: min(260px, 72vw);
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(255, 255, 255, 0.96);
}

.result-auth-hint {
  margin: 0;
  font-size: 0.78rem;
  color: rgba(196, 250, 255, 0.9);
  text-align: left;
}

.result-panel-actions {
  display: flex;
  justify-content: flex-end;
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.result-panel-actions.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.result-panel-actions--outside-replay {
  position: fixed;
  left: 22px;
  bottom: 18px;
  right: auto;
  justify-content: flex-start;
  z-index: 9;
}

.result-panel-actions--outside-replay .btn-secondary,
.result-panel-actions--outside-replay button {
  min-width: 180px;
}

.result-panel-actions .btn,
.result-panel-actions button {
  border-radius: 14px;
  padding: 10px 16px;
  border: 1px solid rgba(0, 255, 255, 0.22);
  box-shadow: 0 0 22px rgba(0, 255, 255, 0.08);
}

.result-panel-actions .btn-primary {
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.24), rgba(0, 255, 255, 0.12));
  color: #dffcff;
}

.result-panel-actions .btn-secondary {
  background: rgba(10, 14, 26, 0.74);
  color: #d7ecff;
}

.result-hud-bg-details path {
  fill: none;
}

.result-speed-lines path {
  fill: none;
  stroke-linecap: round;
  filter: url(#resultGlowCyan);
}

.result-speed-lines .cyan {
  stroke: rgba(0, 255, 255, 0.68);
}

.result-speed-lines .pink {
  stroke: rgba(255, 51, 102, 0.62);
}

.result-speed-lines .trail-1 { stroke-width: 7; opacity: 0.6; }
.result-speed-lines .trail-2 { stroke-width: 12; opacity: 0.48; }
.result-speed-lines .trail-3 { stroke-width: 5; opacity: 0.38; }
.result-speed-lines .trail-4 { stroke-width: 9; opacity: 0.42; }
.result-speed-lines .trail-5 { stroke-width: 6; opacity: 0.34; }
.result-speed-lines .trail-6 { stroke-width: 4; opacity: 0.3; }
.result-speed-lines .trail-7 { stroke-width: 8; opacity: 0.3; }

.hud-chip {
  fill: rgba(10, 14, 26, 0.34);
  fill-opacity: 0.2;
  stroke-width: 2.4;
}

.hud-chip.cyan {
  stroke: rgba(0, 255, 255, 0.88);
  filter: url(#resultGlowCyan);
}

.hud-chip.gold {
  stroke: rgba(255, 204, 0, 0.88);
  filter: url(#resultGlowGold);
}

.hud-chip-text {
  fill: #e6fbff;
  font-family: Arial, "Segoe UI", sans-serif;
  font-size: 24px;
  font-weight: 700;
  text-anchor: middle;
  letter-spacing: 0.04em;
  filter: url(#resultGlowCyan);
}

.result-rank-letter,
.result-rank-text,
.result-score-label,
.result-score-value,
.result-rank-sub-label,
.result-class-rank-value,
.result-speed-value,
.result-metric-label,
.result-metric-value,
.result-metric-icon,
.result-combo-label,
.result-combo-value {
  font-family: Arial, "Segoe UI", sans-serif;
}

.result-rank-letter {
  fill: url(#resultGoldFill);
  font-size: 72px;
  font-weight: 900;
  filter: url(#resultGlowGold);
}

.result-rank-text {
  fill: url(#resultGoldFill);
  font-size: 48px;
  font-weight: 900;
  letter-spacing: 0.03em;
  filter: url(#resultGlowGold);
}

.result-score-plate {
  fill: rgba(16, 22, 42, 0.26);
  fill-opacity: 0.2;
  stroke: rgba(255, 204, 0, 0.9);
  stroke-width: 3;
  filter: url(#resultGlowGold);
}

.result-score-core {
  fill: rgba(255, 204, 0, 0.06);
  stroke: rgba(255, 204, 0, 0.48);
  stroke-width: 2;
  filter: url(#resultGlowGold);
}

.result-score-label {
  fill: rgba(255, 243, 173, 0.96);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0.18em;
  filter: url(#resultGlowGold);
}

.result-score-value {
  fill: url(#resultGoldFill);
  font-size: 84px;
  font-weight: 900;
  letter-spacing: 0.03em;
  font-variant-numeric: tabular-nums;
  filter: url(#resultGlowGold);
}

.result-rank-sub-label {
  fill: rgba(217, 245, 255, 0.86);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.18em;
  filter: url(#resultGlowCyan);
}

.result-class-rank-value {
  fill: rgba(0, 255, 255, 0.94);
  font-size: 62px;
  font-weight: 900;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  filter: url(#resultGlowCyan);
}

.result-class-rank-value.is-settled {
  filter: brightness(1.08);
}

.result-speed-group {
  opacity: 0.94;
  transition: opacity 0.22s ease, transform 0.22s ease, filter 0.22s ease;
}

.result-speed-value {
  fill: rgba(196, 250, 255, 0.9);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  filter: url(#resultGlowCyan);
}

.result-score-value.is-rolling,
.result-metric-value.is-rolling,
.result-combo-value.is-rolling {
  animation: none;
  filter: none;
}

.result-score-value.is-score-settled {
  animation: result-score-sparkle 1.65s ease-in-out infinite;
}

.result-hud-score,
.result-rank-group,
.result-speed-group,
.result-hud-head,
.result-hud-emblem,
.result-metric-group,
.result-combo-group {
  opacity: 0.92;
  transition: opacity 0.22s ease, transform 0.22s ease, filter 0.22s ease;
}

.result-shell.is-live .result-hud-head,
.result-shell.is-live .result-hud-emblem,
.result-shell.is-live .result-hud-score,
.result-shell.is-live .result-rank-group,
.result-shell.is-live .result-speed-group {
  opacity: 1;
}

.result-metric-group,
.result-combo-group,
.result-rank-group,
.result-speed-group {
  opacity: 0.44;
}

.result-metric-group.is-live,
.result-combo-group.is-live,
.result-rank-group.is-live,
.result-speed-group.is-live {
  opacity: 0.96;
}

.result-metric-group.is-hot,
.result-combo-group.is-hot,
.result-rank-group.is-hot,
.result-hud-score.is-hot,
.result-hud-score.is-score-live {
  filter: saturate(1.2) brightness(1.08);
}

.result-metric-group.is-value-settled,
.result-combo-group.is-value-settled,
.result-rank-group.is-value-settled {
  opacity: 1;
}

.result-metric-panel,
.result-combo-panel {
  fill: rgba(14, 22, 38, 0.26);
  fill-opacity: 0.2;
  stroke-width: 2.2;
}

.result-metric-panel--green {
  stroke: rgba(0, 255, 153, 0.92);
  filter: url(#resultGlowGreen);
}

.result-metric-panel--red {
  stroke: rgba(255, 51, 102, 0.92);
  filter: url(#resultGlowRed);
}

.result-metric-panel--blue {
  stroke: rgba(0, 255, 255, 0.92);
  filter: url(#resultGlowCyan);
}

.result-metric-panel--grey {
  stroke: rgba(214, 232, 245, 0.8);
  filter: url(#resultGlowCyan);
}

.result-combo-panel {
  stroke: rgba(255, 204, 0, 0.94);
  filter: url(#resultGlowGold);
}

.result-metric-icon {
  font-size: 34px;
  font-weight: 900;
}

.result-metric-icon--green,
.result-metric-value--green {
  fill: #00ff99;
  filter: url(#resultGlowGreen);
}

.result-metric-icon--red,
.result-metric-value--red {
  fill: #ff3366;
  filter: url(#resultGlowRed);
}

.result-metric-icon--blue,
.result-metric-value--blue {
  fill: #8defff;
  filter: url(#resultGlowCyan);
}

.result-metric-icon--grey,
.result-metric-value--grey {
  fill: #e9f6ff;
  filter: url(#resultGlowCyan);
}

.result-metric-label {
  fill: rgba(224, 244, 255, 0.88);
  font-size: 22px;
  font-weight: 700;
}

.result-metric-value {
  font-size: 44px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.result-metric-value.is-settled,
.result-combo-value.is-settled {
  filter: brightness(1.08);
}

.result-combo-label {
  fill: rgba(255, 225, 154, 0.98);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0.04em;
  filter: url(#resultGlowGold);
}

.result-combo-icon {
  fill: rgba(255, 204, 0, 0.98);
  font-family: Arial, "Segoe UI", sans-serif;
  font-size: 32px;
  font-weight: 900;
  filter: url(#resultGlowGold);
}

.result-combo-value {
  fill: url(#resultGoldFill);
  font-size: 64px;
  font-weight: 900;
  letter-spacing: 0.03em;
  font-variant-numeric: tabular-nums;
  filter: url(#resultGlowGold);
}

.result-hud-score.is-score-live .result-score-value:not(.is-rolling) {
  animation: result-score-sparkle 1.65s ease-in-out infinite;
}

.result-heat-ticks path {
  stroke: rgba(255, 255, 255, 0.24);
  stroke-width: 1;
}

.result-flame-polys path {
  fill: rgba(255, 153, 0, 0.82);
  filter: url(#resultGlowGold);
}

.result-confetti {
  position: absolute;
  width: var(--size);
  height: calc(var(--size) * 0.58);
  border-radius: 3px;
  opacity: 0;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.34);
  animation: result-confetti-fall var(--duration) ease-in var(--delay) forwards;
}

.result-confetti--spark {
  width: calc(var(--size) * 0.56);
  height: calc(var(--size) * 0.56);
  border-radius: 999px;
  filter: brightness(1.12);
}

.class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.duration-field {
  display: inline-grid;
  gap: 6px;
  font-weight: 700;
  color: var(--ink);
}

.duration-field span {
  font-size: 0.82rem;
  color: var(--muted);
}

.duration-control-group {
  display: inline-grid;
  gap: 8px;
  align-items: start;
}

.duration-input-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: stretch;
  gap: 6px;
}

.duration-field input {
  width: 96px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  text-align: center;
  font-weight: 800;
}

.duration-stepper {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 4px;
}

.duration-step-btn {
  min-width: 34px;
  width: 34px;
  height: 20px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: #334155;
  font-size: 0.72rem;
  line-height: 1;
}

.duration-step-btn:hover {
  background: #f1f5f9;
}

.duration-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.duration-preset-btn {
  padding: 7px 10px;
  border-radius: 10px;
  font-size: 0.84rem;
}

.start-mode-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.admin-select-field {
  min-width: 360px;
}

.admin-multi-select {
  width: min(620px, 90vw);
  min-width: 320px;
  min-height: 160px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 8px;
  font-size: 0.88rem;
  line-height: 1.45;
  font-family: "Cascadia Mono", "Consolas", "BIZ UDPGothic", sans-serif;
}

.admin-multi-select option {
  padding: 3px 4px;
}

.attendance-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.attendance-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.attendance-board-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248,250,252,0.98));
  box-shadow: var(--shadow-soft);
}

.attendance-board {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.attendance-board th,
.attendance-board td {
  border: 1px solid rgba(214, 222, 234, 0.88);
  text-align: center;
}

.attendance-board thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  min-width: 26px;
  height: 28px;
  padding: 4px 3px;
  background: #f8fbff;
  font-size: 0.74rem;
  font-weight: 800;
}

.attendance-board tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  width: 42px;
  min-width: 42px;
  padding: 6px 4px;
  background: #f8fbff;
  font-size: 0.86rem;
  font-weight: 900;
}

.attendance-cell {
  width: 26px;
  min-width: 26px;
  height: 26px;
  padding: 0;
  background: #fff;
}

.seat-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.14);
}

.seat-dot--offline {
  background: #cbd5e1;
}

.seat-dot--standby {
  background: #fb923c;
  box-shadow: 0 0 10px rgba(251, 146, 60, 0.28), inset 0 0 0 1px rgba(154, 52, 18, 0.18);
}

.seat-dot--playing {
  background: #22c55e;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.34), inset 0 0 0 1px rgba(20, 83, 45, 0.18);
}

.attendance-note {
  margin: 10px 0 0;
}

.class-card {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
  padding: 14px;
}

.class-card header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.class-card h3 {
  margin: 0;
  font-size: 1.15rem;
}

.pill {
  border: 1px solid var(--line);
}

.pill.idle {
  background: #e2e8f0;
  color: #334155;
}

.pill.running {
  background: #dcfce7;
  color: #14532d;
  border-color: #22c55e;
}

.pill.ended {
  background: #fee2e2;
  color: #7f1d1d;
  border-color: #f87171;
}

.class-state-text {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.class-metrics {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.class-metrics div {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: var(--surface-soft);
}

.class-metrics dt {
  font-size: 0.76rem;
  color: var(--muted);
}

.class-metrics dd {
  margin: 4px 0 0;
  font-size: 1.15rem;
  font-weight: 800;
}

.admin-log {
  max-height: 260px;
  overflow: auto;
  border-radius: 12px;
  background: #0f172a;
  color: #dbeafe;
  padding: 12px;
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-size: 0.8rem;
  line-height: 1.6;
}

.admin-ranking-grid {
  display: grid;
  gap: 12px;
}

.admin-ranking-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.admin-ranking-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.admin-ranking-tab {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #334155;
  padding: 6px 12px;
  font-size: 0.84rem;
  font-weight: 700;
}

.admin-ranking-tab.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.admin-ranking-actions .btn-secondary.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.admin-ranking-block {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: rgba(248, 250, 252, 0.92);
}

.admin-ranking-block h3,
.admin-class-best-card h4 {
  margin: 0 0 8px;
}

.admin-ranking-table-wrap {
  overflow: auto;
}

.admin-ranking-table {
  min-width: 560px;
}

.admin-class-best-list {
  display: grid;
  gap: 10px;
}

.admin-class-best-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: #fff;
}

.admin-ranking-table--compact th,
.admin-ranking-table--compact td {
  padding: 8px 8px;
}

.ranking-table {
  width: 100%;
  border-collapse: collapse;
}

.ranking-table th,
.ranking-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.ranking-table th {
  background: #f8fafc;
  font-size: 0.86rem;
}

@media (max-width: 1100px) and (min-width: 981px) {
  body[data-phase="playing"] .student-layout {
    grid-template-columns: minmax(0, 1fr) 220px;
  }

  body[data-phase="playing"] .game-head {
    grid-template-columns: minmax(135px, 150px) minmax(0, 1fr) minmax(135px, 150px);
  }
}

@media (max-width: 980px) {
  .topbar,
  .hero-card,
  .waiting-grid,
  .guide-grid {
    grid-template-columns: 1fr;
  }

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

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

  .inline-form {
    grid-template-columns: 1fr;
  }

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

  body[data-phase="playing"] .student-layout {
    grid-template-columns: 1fr;
    height: auto;
  }

  body[data-phase="playing"] #gamePanel,
  body[data-phase="playing"] #keyboardPanel,
  body[data-phase="playing"] #chatPanel {
    grid-column: 1;
  }

  body[data-phase="playing"] #chatPanel {
    grid-row: auto;
    min-height: 180px;
  }

  body[data-phase="result"] .student-layout {
    height: auto;
  }

  .result-overlay {
    right: 18px;
    left: 46%;
    width: auto;
  }

  .result-auth-floating {
    left: 18px;
    right: 18px;
    bottom: 20px;
    top: auto;
    width: auto;
  }

  .ready-auth-panel {
    left: 18px;
    right: 18px;
    width: auto;
  }

  .outside-auth-card {
    width: min(440px, calc(100vw - 32px));
  }

  body[data-phase="playing"] .keyboard-stage {
    min-height: 260px;
    height: auto;
  }
}

@media (max-width: 720px) {
  .layout,
  .admin-main,
  .ranking-main {
    width: min(96vw, 720px);
  }

  .card {
    padding: 14px;
  }

  .floating-status {
    top: 8px;
    right: 8px;
  }

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

  .result-overlay {
    left: 18px;
    right: 18px;
    justify-items: stretch;
  }

  .ready-auth-panel {
    left: 12px;
    right: 12px;
    bottom: 56px;
  }

  .ready-session-bar {
    top: 12px;
    right: 12px;
    gap: 8px;
    max-width: calc(100vw - 24px);
  }

  .ready-auth-identity {
    max-width: min(58vw, 240px);
    font-size: 0.78rem;
    padding: 7px 10px;
  }

  .outside-auth-card {
    margin-top: 16px;
    padding: 16px;
  }

  .result-auth-floating {
    left: 18px;
    right: 18px;
    bottom: 14px;
    top: auto;
    width: auto;
  }

  .result-intro-text {
    font-size: clamp(4rem, 18vw, 8rem);
  }

  .key {
    font-size: 0.8rem;
  }

  body[data-phase="playing"] .game-head {
    grid-template-columns: 1fr;
  }

  body[data-phase="playing"] .keyboard-stage {
    min-height: 220px;
  }

}

@keyframes combo-rainbow {
  0% { background-position: 0% 50%; }
  100% { background-position: 220% 50%; }
}

@keyframes chat-message-pop {
  0% {
    opacity: 0;
    transform: translateY(10px) scale(0.96);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes result-intro-pulse {
  0%, 100% {
    opacity: 0.88;
    transform: scale(0.985);
  }
  50% {
    opacity: 1;
    transform: scale(1.02);
  }
}

@keyframes slot-roll-drift {
  0% {
    transform: translateY(-8%);
  }
  100% {
    transform: translateY(8%);
  }
}

@keyframes result-score-sparkle {
  0%, 100% {
    color: #fde68a;
    text-shadow:
      0 0 18px rgba(250, 204, 21, 0.24),
      0 0 42px rgba(250, 204, 21, 0.16),
      0 0 72px rgba(255, 255, 255, 0.08);
    filter: saturate(1) brightness(1);
  }
  25% {
    color: #fff7cc;
    text-shadow:
      0 0 22px rgba(250, 204, 21, 0.3),
      0 0 54px rgba(255, 255, 255, 0.16),
      0 0 86px rgba(250, 204, 21, 0.18);
    filter: saturate(1.08) brightness(1.04);
  }
  50% {
    color: #fef08a;
    text-shadow:
      0 0 26px rgba(250, 204, 21, 0.34),
      0 0 62px rgba(250, 204, 21, 0.22),
      0 0 96px rgba(255, 255, 255, 0.18);
    filter: saturate(1.16) brightness(1.08);
  }
  75% {
    color: #fff3b0;
    text-shadow:
      0 0 24px rgba(253, 224, 71, 0.3),
      0 0 56px rgba(255, 255, 255, 0.16),
      0 0 84px rgba(253, 224, 71, 0.18);
    filter: saturate(1.1) brightness(1.05);
  }
}

@keyframes prompt-particle-burst {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(0.15) rotate(var(--rot));
  }
}

@keyframes screen-shake {
  0%, 100% { transform: translate3d(0, 0, 0); }
  16% { transform: translate3d(-14px, 4px, 0); }
  32% { transform: translate3d(12px, -6px, 0); }
  48% { transform: translate3d(-10px, 5px, 0); }
  64% { transform: translate3d(9px, -4px, 0); }
  80% { transform: translate3d(-6px, 3px, 0); }
}

@keyframes key-next-alert {
  0%, 100% {
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.14), 0 0 18px rgba(245, 158, 11, 0.34);
    filter: saturate(1);
  }
  50% {
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.24), 0 0 26px rgba(245, 158, 11, 0.48);
    filter: saturate(1.12);
  }
}

@keyframes ready-pulse {
  0%, 100% {
    opacity: 0.84;
    transform: scale(0.985);
  }
  50% {
    opacity: 1;
    transform: scale(1.015);
  }
}

@keyframes next-key-overlay-pulse {
  0%, 100% {
    transform: scale(1);
    filter: saturate(1);
  }
  50% {
    transform: scale(1.08);
    filter: saturate(1.12);
  }
}

@keyframes finger-arrow-flow {
  0% {
    stroke-dashoffset: 0;
    opacity: 0.2;
  }
  50% {
    opacity: 0.96;
  }
  100% {
    stroke-dashoffset: -256;
    opacity: 0.24;
  }
}

@keyframes combo-particle-burst {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(0.24) rotate(var(--rot));
  }
}

@keyframes result-confetti-fall {
  0% {
    opacity: 0;
    transform: translate3d(0, -24px, 0) rotate(var(--rot-start)) scale(0.84);
  }
  8% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--dx), var(--dy), 0) rotate(var(--rot-end)) scale(1);
  }
}

@media (max-width: 520px) {
  .hero-meta,
  .hero-meta.compact {
    grid-template-columns: 1fr;
  }

  .result-panel-actions,
  .admin-controls,
  .ranking-controls,
  .inline-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .result-panel-actions--outside-replay {
    left: 14px;
    right: 14px;
    bottom: 12px;
  }

  .admin-select-field,
  .admin-multi-select {
    min-width: 0;
    width: 100%;
  }
}

/* ---- 単独版: ニックネーム変更 UI ---- */
#currentPlayerChip {
  cursor: pointer;
  text-decoration: underline dotted;
}

.chat-message--self .chat-name {
  cursor: pointer;
  text-decoration: underline dotted;
}