/* 反应时间测试 — 沉浸式舞台 + 成绩侧栏 */

#fanyingceshiApp {
	--rt-ink: #0b2b2e;
	--rt-mint: #1faa8a;
	--rt-mint-deep: #0f7a62;
	--rt-coral: #e85d4c;
	--rt-amber: #d97706;
	--rt-sky: #e8f7f3;
	--rt-stage-idle: linear-gradient(145deg, #123a3f 0%, #0b2b2e 55%, #164a42 100%);
	--rt-stage-wait: linear-gradient(145deg, #7a1f28 0%, #5c1520 50%, #3d1018 100%);
	--rt-stage-ready: linear-gradient(145deg, #12b886 0%, #0f9b72 45%, #0b7a5a 100%);
	--rt-stage-early: linear-gradient(145deg, #b45309 0%, #92400e 55%, #78350f 100%);
	--rt-stage-result: linear-gradient(145deg, #0f766e 0%, #115e59 55%, #134e4a 100%);
}

.rt-nav {
	display: flex;
	gap: 0.5rem;
	margin-bottom: 1rem;
	padding: 0.25rem;
	background: #f1f5f4;
	border-radius: 0.75rem;
}

.rt-nav-btn {
	flex: 1;
	height: 2.5rem;
	border: 0;
	border-radius: 0.625rem;
	background: transparent;
	color: #64748b;
	font-size: 0.875rem;
	font-weight: 600;
	cursor: pointer;
	transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.rt-nav-btn.is-active {
	background: #fff;
	color: var(--rt-ink);
	box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

.rt-nav-btn:active {
	transform: scale(0.98);
}

.rt-shell {
	display: grid;
	gap: 1.25rem;
}

.rt-panel {
	display: none;
	min-width: 0;
}

.rt-panel.is-active {
	display: block;
	animation: rtPanelIn 0.28s ease;
}

@keyframes rtPanelIn {
	from {
		opacity: 0;
		transform: translateY(6px);
	}
	to {
		opacity: 1;
		transform: none;
	}
}

.rt-stage {
	position: relative;
	overflow: hidden;
	min-height: 280px;
	border-radius: 1.25rem;
	background: var(--rt-stage-idle);
	color: #fff;
	cursor: pointer;
	user-select: none;
	-webkit-tap-highlight-color: transparent;
	outline: none;
	transition: background 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
	box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.rt-stage:focus-visible {
	box-shadow: 0 0 0 3px rgba(31, 170, 138, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.rt-stage:active {
	transform: scale(0.995);
}

.rt-stage-glow {
	position: absolute;
	inset: -40% auto auto 50%;
	width: 70%;
	height: 70%;
	transform: translateX(-50%);
	border-radius: 50%;
	background: radial-gradient(circle, rgba(255, 255, 255, 0.16) 0%, transparent 68%);
	pointer-events: none;
	opacity: 0.7;
}

.rt-stage-inner {
	position: relative;
	z-index: 1;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	min-height: 280px;
	padding: 2rem 1.25rem;
	text-align: center;
}

.rt-eyebrow {
	margin: 0 0 0.5rem;
	font-size: 0.75rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	opacity: 0.72;
}

.rt-hint {
	margin: 0;
	font-size: clamp(1.75rem, 5vw, 2.5rem);
	font-weight: 800;
	line-height: 1.15;
	letter-spacing: -0.02em;
}

.rt-sub {
	margin: 0.75rem 0 0;
	max-width: 18rem;
	font-size: 0.9rem;
	line-height: 1.5;
	opacity: 0.82;
}

.rt-result {
	margin: 0.25rem 0 0;
	font-size: clamp(2.75rem, 10vw, 4.5rem);
	font-weight: 800;
	line-height: 1;
	font-variant-numeric: tabular-nums;
	letter-spacing: -0.03em;
}

.rt-rating {
	margin: 0.85rem 0 0;
	display: inline-flex;
	align-items: center;
	padding: 0.35rem 0.85rem;
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.16);
	font-size: 0.875rem;
	font-weight: 600;
}

.rt-stage.is-waiting {
	background: var(--rt-stage-wait);
}

.rt-stage.is-waiting .rt-stage-glow {
	animation: rtPulse 1.4s ease-in-out infinite;
}

.rt-stage.is-ready {
	background: var(--rt-stage-ready);
	animation: rtReadyFlash 0.35s ease;
}

.rt-stage.is-early {
	background: var(--rt-stage-early);
	animation: rtShake 0.4s ease;
}

.rt-stage.is-result {
	background: var(--rt-stage-result);
}

@keyframes rtPulse {
	0%, 100% { opacity: 0.35; transform: translateX(-50%) scale(0.92); }
	50% { opacity: 0.85; transform: translateX(-50%) scale(1.08); }
}

@keyframes rtReadyFlash {
	0% { filter: brightness(1.25); }
	100% { filter: brightness(1); }
}

@keyframes rtShake {
	0%, 100% { transform: translateX(0); }
	25% { transform: translateX(-6px); }
	75% { transform: translateX(6px); }
}

.rt-tip {
	margin: 0.85rem 0 0;
	font-size: 0.75rem;
	line-height: 1.6;
	color: #64748b;
}

.rt-stats-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 0.75rem;
}

.rt-stat {
	padding: 0.9rem 1rem;
	border: 1px solid #e2e8f0;
	border-radius: 0.9rem;
	background: linear-gradient(180deg, #f8fbfa 0%, #fff 100%);
}

.rt-stat-label {
	display: block;
	margin-bottom: 0.25rem;
	font-size: 0.75rem;
	color: #64748b;
}

.rt-stat-value {
	display: block;
	font-size: 1.35rem;
	font-weight: 800;
	color: var(--rt-ink);
	font-variant-numeric: tabular-nums;
	letter-spacing: -0.02em;
}

.rt-meter {
	position: relative;
	margin: 1.1rem 0 1.25rem;
}

.rt-meter-track {
	display: grid;
	grid-template-columns: 1.1fr 1fr 1.4fr 1.2fr;
	height: 0.55rem;
	overflow: hidden;
	border-radius: 999px;
	background: #e2e8f0;
}

.rt-meter-seg {
	display: block;
	height: 100%;
}

.rt-meter-elite { background: #0f9b72; }
.rt-meter-fast { background: #2dd4a0; }
.rt-meter-avg { background: #fbbf24; }
.rt-meter-slow { background: #f87171; }

.rt-meter-needle {
	position: absolute;
	top: calc(0.55rem / 2);
	left: 0;
	width: 0.7rem;
	height: 0.7rem;
	border-radius: 999px;
	background: var(--rt-ink);
	box-shadow: 0 0 0 3px #fff;
	transform: translate(-50%, -50%);
	transition: left 0.35s ease;
	opacity: 0;
	pointer-events: none;
	z-index: 1;
}

.rt-meter-needle.is-on {
	opacity: 1;
}

.rt-meter-labels {
	display: grid;
	grid-template-columns: 1.1fr 1fr 1.4fr 1.2fr;
	gap: 0.25rem;
	margin-top: 0.45rem;
	font-size: 0.65rem;
	color: #94a3b8;
	text-align: center;
}

.rt-history-head {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
	margin-bottom: 0.75rem;
}

.rt-btn {
	height: 2.25rem;
	padding: 0 0.9rem;
	border-radius: 0.65rem;
	font-size: 0.8125rem;
	font-weight: 600;
	cursor: pointer;
	transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, opacity 0.15s ease;
}

.rt-btn:disabled {
	opacity: 0.45;
	cursor: not-allowed;
}

.rt-btn-primary {
	background: var(--rt-mint);
	border: 1px solid var(--rt-mint-deep);
	color: #fff;
}

.rt-btn-primary:hover {
	background: var(--rt-mint-deep);
}

.rt-btn-ghost {
	background: #fff;
	border: 1px solid #d1d5db;
	color: #374151;
}

.rt-btn-ghost:not(:disabled):hover {
	background: #f8fafc;
	border-color: #94a3b8;
}

.rt-history {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	min-height: 2.5rem;
}

.rt-history-empty {
	margin: 0;
	font-size: 0.8125rem;
	color: #94a3b8;
}

.rt-chip {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	padding: 0.35rem 0.7rem;
	border-radius: 999px;
	background: var(--rt-sky);
	color: var(--rt-mint-deep);
	font-size: 0.8125rem;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
	animation: rtChipIn 0.28s ease;
}

.rt-chip span {
	font-size: 0.7rem;
	font-weight: 600;
	opacity: 0.7;
}

@keyframes rtChipIn {
	from {
		opacity: 0;
		transform: scale(0.9);
	}
	to {
		opacity: 1;
		transform: none;
	}
}

@media (min-width: 768px) {
	.rt-nav {
		display: none;
	}

	.rt-shell {
		grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.9fr);
		align-items: start;
	}

	.rt-panel,
	.rt-panel.is-active {
		display: block;
		animation: none;
	}

	.rt-stage,
	.rt-stage-inner {
		min-height: 360px;
	}

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

@media (min-width: 1024px) {
	.rt-stage,
	.rt-stage-inner {
		min-height: 400px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.rt-panel.is-active,
	.rt-stage.is-waiting .rt-stage-glow,
	.rt-stage.is-ready,
	.rt-stage.is-early,
	.rt-chip,
	.rt-meter-needle {
		animation: none;
		transition: none;
	}
}