/* ============================================================
   DOM 3D 互动实验室 · 纯原生 DOM + CSS 3D + Pointer Events
   像素风 · 零 Canvas · 零引擎 · 零图片
   ============================================================ */

@font-face {
	font-family: 'Zpix';
	src: url('/onenight/fonts/zpix.woff2') format('woff2'),
	     url('/onenight/fonts/zpix.ttf') format('truetype');
	font-weight: normal;
	font-style: normal;
	font-display: swap;
}

*, *::before, *::after, input, button, select, textarea {
	font-family: 'Zpix', monospace, sans-serif !important;
	-webkit-font-smoothing: none;
	-moz-osx-font-smoothing: grayscale;
	text-rendering: pixelated;
	box-sizing: border-box;
}

:root{
	--bg:      #0a0a12;
	--panel:   #131322;
	--panel2:  #1a1a2e;
	--line:    #2c2c48;
	--txt:     #dfe3f5;
	--dim:     #7d82a3;
	--green:   #3ddc84;
	--pink:    #ff4d8d;
	--cyan:    #4dd8ff;
	--yellow:  #ffd84d;
	--purple:  #a78bfa;
	--red:     #ff6b6b;
}

html, body{
	margin: 0;
	width: 100%;
	height: 100%;
	overflow: hidden;
	background: var(--bg);
	color: var(--txt);
	font-family: 'Zpix', monospace, sans-serif;
}

/* ==================== 整体布局 ==================== */
body{
	display: grid;
	grid-template-rows: auto auto 1fr auto;
	height: 100dvh;
}

/* ==================== 顶部状态条 ==================== */
.topbar{
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 10px 16px;
	background: linear-gradient(180deg, #141424, #0e0e1a);
	border-bottom: 2px solid var(--line);
	z-index: 30;
}
.logo{
	font-size: 18px;
	font-weight: 700;
	letter-spacing: 1px;
	color: #fff;
	text-shadow: 2px 2px 0 rgba(61,220,132,.35);
}
.logo-sub{
	font-size: 11px;
	color: var(--dim);
	margin-top: 2px;
}
.topbar-right{ display: flex; gap: 8px; }
.badge{
	font-size: 11px;
	padding: 4px 8px;
	border: 1px solid var(--line);
	background: var(--panel);
	color: var(--dim);
	box-shadow: 3px 3px 0 rgba(0,0,0,.45);
	white-space: nowrap;
}
.badge#badgeFps{ color: var(--green); }
.badge#badgePtr{ color: var(--cyan); }
.badge.warn{ color: var(--yellow); }

/* ==================== 页签导航 ==================== */
.tab-nav{
	display: flex;
	align-items: flex-end;
	gap: 4px;
	padding: 0 10px;
	background: #0e0e1a;
	border-bottom: 2px solid var(--line);
	overflow-x: auto;
	flex-shrink: 0;
	z-index: 20;
}
.tab-btn{
	flex: 1 1 auto;
	min-width: 86px;
	height: 34px;
	border: 1px solid var(--line);
	border-bottom: none;
	background: #10101e;
	color: var(--dim);
	font-size: 13px;
	font-weight: 700;
	cursor: pointer;
	opacity: .6;
	transition: all .15s ease;
	user-select: none;
}
.tab-btn:hover{ opacity: .9; }
.tab-btn.active{
	height: 40px;
	opacity: 1;
	background: var(--bg);
	color: #fff;
	border: 2px solid var(--green);
	border-bottom: 2px solid var(--bg);
	margin-bottom: -2px;
	box-shadow: 0 -3px 0 rgba(61,220,132,.25);
}

/* ==================== 内容区 ==================== */
.content{
	position: relative;
	overflow: hidden;
}
.demo-pane{
	position: absolute;
	inset: 0;
	display: none;
	flex-direction: column;
	padding: 12px 16px 16px;
	gap: 10px;
	overflow-y: auto;
	overflow-x: hidden;
}
.demo-pane.active{ display: flex; }

.demo-bar{
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	flex-wrap: wrap;
}
.demo-title{ font-size: 15px; font-weight: 700; color: #fff; }
.demo-title b{
	display: inline-block;
	color: var(--bg);
	background: var(--green);
	padding: 1px 7px;
	margin-right: 6px;
	box-shadow: 2px 2px 0 rgba(0,0,0,.5);
}
.demo-tags{ display: flex; gap: 6px; flex-wrap: wrap; }
.demo-tags span{
	font-size: 10px;
	color: var(--cyan);
	border: 1px solid rgba(77,216,255,.4);
	background: rgba(77,216,255,.08);
	padding: 2px 6px;
}
.demo-note{
	font-size: 12px;
	color: var(--dim);
	line-height: 1.7;
	background: var(--panel);
	border-left: 3px solid var(--purple);
	padding: 8px 12px;
}
.demo-note b{ color: var(--yellow); }

/* 舞台容器：所有互动区域统一 */
.stage-box{
	position: relative;
	flex: 1 1 auto;
	min-height: 260px;
	background:
		radial-gradient(120% 90% at 50% 0%, #1a1a30 0%, #0c0c18 70%);
	border: 2px solid var(--line);
	box-shadow: inset 0 0 40px rgba(0,0,0,.6);
	display: grid;
	place-items: center;
	overflow: hidden;
	user-select: none;
	-webkit-user-select: none;
	touch-action: none; /* 关键：禁止触摸滚动，交给 Pointer 手势 */
}

.hint{
	position: absolute;
	left: 0; right: 0; bottom: 10px;
	text-align: center;
	font-size: 11px;
	color: var(--dim);
	letter-spacing: 2px;
	pointer-events: none;
}

/* 数据读数条 */
.readout{
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}
.ro{
	font-size: 11px;
	color: var(--dim);
	border: 1px solid var(--line);
	background: var(--panel);
	padding: 4px 10px;
	box-shadow: 2px 2px 0 rgba(0,0,0,.4);
}
.ro b{ color: var(--green); font-weight: 700; }

/* ============================================================
   Demo ① 指针倾角 · 3D 翻牌
   ============================================================ */
.tilt-stage{ perspective: 800px; }
.tilt-card{
	width: 132px;
	height: 188px;
	transform-style: preserve-3d;   /* 让内层翻面共享同一 3D 上下文 */
	will-change: transform;
	position: relative;
}
.flip-inner{
	position: absolute;
	inset: 0;
	transform-style: preserve-3d;
	transition: transform .65s cubic-bezier(.4,.1,.2,1);
	transform: rotateY(0deg);
	cursor: pointer;
}
.flip-inner.is-flipped{ transform: rotateY(180deg); }

.face{
	position: absolute;
	inset: 0;
	backface-visibility: hidden;
	border: 2px solid #fff;
	border-radius: 4px;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 8px;
	overflow: hidden;
}
.face-back{
	background:
		repeating-linear-gradient(45deg, #1c1c2a 0 8px, #22223a 8px 16px);
}
.face-logo{
	font-size: 20px;
	font-weight: 700;
	color: #fff;
	letter-spacing: 4px;
	text-align: center;
	text-shadow: 2px 2px 0 #000;
}
.face-pattern{
	width: 60px; height: 60px;
	border: 2px dashed rgba(255,255,255,.35);
	border-radius: 4px;
}
.face-front{
	background: linear-gradient(160deg, #101018, #05050a);
	transform: rotateY(180deg);
}
.wolf-pixel{
	width: 65px; height: 65px;
	filter: drop-shadow(0 0 10px rgba(61,220,132,.55));
}
.face-role{
	font-size: 22px;
	font-weight: 700;
	color: var(--green);
	text-shadow: 2px 2px 0 #000;
}
.face-camp{
	font-size: 10px;
	color: var(--dim);
	letter-spacing: 1px;
}

/* ============================================================
   Demo ② 3D 旋转木马
   ============================================================ */
.carousel-stage{ perspective: 1000px; }
.carousel-scene{
	width: 100%;
	height: 100%;
	display: grid;
	place-items: center;
	perspective: 1000px;
}
.carousel-ring{
	position: relative;
	width: 0; height: 0;
	transform-style: preserve-3d;
	will-change: transform;
}
.car-item{
	position: absolute;
	left: -46px; top: -66px;   /* 卡片 92x132 居中 */
	width: 92px; height: 132px;
	transform-style: preserve-3d;
}
.car-inner{
	position: absolute;
	inset: 0;
	transform-style: preserve-3d;
}
.car-face{
	position: absolute;
	inset: 0;
	backface-visibility: hidden;
	border: 2px solid #fff;
	border-radius: 4px;
	display: grid;
	place-items: center;
	font-size: 34px;
	overflow: hidden;
}
/* 设计面（emoji）朝向观众可见 */
.car-face.car-front{
	transform: rotateY(0deg);
	background: linear-gradient(160deg, #1c1c30, #0b0b16);
	box-shadow: inset 0 0 24px rgba(77,216,255,.12);
}
/* 背对观众时显示 "?" 卡背 */
.car-face.car-back{
	transform: rotateY(180deg);
	background: repeating-linear-gradient(45deg, #1b1b2a 0 7px, #212138 7px 14px);
	color: #fff;
	font-size: 40px;
}
.car-item.active .car-face.car-front{
	border-color: var(--green);
	box-shadow: 0 0 18px rgba(61,220,132,.65), inset 0 0 24px rgba(61,220,132,.18);
}
.car-item.active .car-inner{ animation: car-pulse 1.2s ease-in-out infinite; }
@keyframes car-pulse{
	0%,100%{ transform: scale(1); }
	50%{ transform: scale(1.05); }
}

/* ============================================================
   Demo ③ 技能拖放吸附
   ============================================================ */
.snap-stage{
	display: flex;
	flex-direction: column;
	place-items: stretch;
	overflow: hidden;
}
.snap-title{
	text-align: center;
	font-size: 13px;
	color: var(--yellow);
	padding: 8px 0 2px;
	letter-spacing: 2px;
}
.snap-hand{
	display: flex;
	justify-content: center;
	gap: 14px;
	padding: 14px 0 10px;
}
.role-card{
	width: 92px;
	height: 118px;
	border: 2px solid #fff;
	border-radius: 4px;
	background: linear-gradient(160deg, #1d1d31, #0b0b16);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 6px;
	cursor: grab;
	touch-action: none;
	position: relative;
	transition: box-shadow .15s ease, filter .15s ease;
	box-shadow: 4px 4px 0 rgba(0,0,0,.5);
}
.role-card::after{
	content: "";
	position: absolute;
	inset: 4px;
	border: 1px dashed rgba(255,255,255,.18);
	pointer-events: none;
}
.role-card[data-role="强盗"]{ border-color: var(--pink); }
.role-card[data-role="捣蛋鬼"]{ border-color: var(--purple); }
.role-card[data-role="预言家"]{ border-color: var(--cyan); }
.role-emoji{ font-size: 30px; }
.role-name{ font-size: 14px; font-weight: 700; color: #fff; }
.role-desc{ font-size: 9px; color: var(--dim); }

.role-card.is-dragging{
	cursor: grabbing;
	z-index: 50;
	filter: brightness(1.35);
	box-shadow: 0 0 22px rgba(255,255,255,.4), 8px 8px 0 rgba(0,0,0,.5);
	transition: none;
}
.role-card.is-dragging::after{ border-color: var(--yellow); }

/* 槽位 */
.snap-slot-row{
	display: flex;
	justify-content: center;
	gap: 12px;
	padding: 4px 0 12px;
}
.slot{
	width: 96px;
	height: 122px;
	border: 2px dashed var(--line);
	border-radius: 4px;
	background: rgba(255,255,255,.02);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
	position: relative;
}
.slot-label{
	font-size: 11px;
	color: var(--dim);
	letter-spacing: 1px;
}
.slot.slot-hover{
	border-color: var(--green);
	border-style: solid;
	box-shadow: 0 0 12px rgba(61,220,132,.7), inset 0 0 16px rgba(61,220,132,.15);
	transform: scale(1.05);
	background: rgba(61,220,132,.06);
}
.slot.slot-hover .slot-label{ color: var(--green); }
.slot.has-card{ border-style: solid; border-color: rgba(255,255,255,.3); }
.slot .role-card{
	width: 84px;
	height: 104px;
	transform: scale(.88);
	margin: 0 auto;
}
.slot .slot-label{ position: absolute; bottom: 4px; font-size: 9px; }

/* 技能日志 */
.snap-log{
	flex: 1 1 auto;
	min-height: 46px;
	max-height: 84px;
	margin: 0 8px 10px;
	border: 1px solid var(--line);
	background: rgba(0,0,0,.45);
	overflow-y: auto;
	padding: 6px 10px;
	font-size: 11px;
	line-height: 1.8;
	text-align: left;
}
.snap-log .log-line{ color: var(--dim); animation: log-in .25s ease; }
.snap-log .log-line b{ color: var(--green); }
.snap-log .log-line.act{ color: var(--yellow); }
@keyframes log-in{
	from{ opacity: 0; transform: translateX(-6px); }
	to{ opacity: 1; transform: translateX(0); }
}

/* ============================================================
   Demo ④ 多点触控 3D 立方体
   ============================================================ */
.mt-stage{ perspective: 900px; }
.cube-wrap{ perspective: 900px; }
.cube{
	width: 116px;
	height: 116px;
	position: relative;
	transform-style: preserve-3d;
	will-change: transform;
}
.cube-face{
	position: absolute;
	inset: 0;
	border: 2px solid rgba(255,255,255,.85);
	display: grid;
	place-items: center;
	font-size: 44px;
	font-weight: 700;
	color: #fff;
	text-shadow: 2px 2px 0 rgba(0,0,0,.5);
	box-shadow: inset 0 0 26px rgba(0,0,0,.45);
}
.cube-1{ background: rgba(61,220,132,.85); transform: rotateY(0deg)   translateZ(58px); }
.cube-2{ background: rgba(77,216,255,.85); transform: rotateY(90deg)  translateZ(58px); }
.cube-3{ background: rgba(167,139,250,.85); transform: rotateY(180deg) translateZ(58px); }
.cube-4{ background: rgba(255,77,141,.85);  transform: rotateY(270deg) translateZ(58px); }
.cube-5{ background: rgba(255,216,77,.85);  transform: rotateX(90deg)  translateZ(58px); color:#241c00; }
.cube-6{ background: rgba(255,107,107,.85); transform: rotateX(-90deg) translateZ(58px); }

/* ============================================================
   Demo ⑤ 景深视差
   ============================================================ */
.para-scene{
	perspective: 900px;
	background: linear-gradient(180deg, #0a0f2a 0%, #131a3a 45%, #1b1430 100%);
	overflow: hidden;
}
.para-inner{
	position: absolute;
	inset: 0;
	perspective: 900px;
	transform-style: preserve-3d;
	will-change: transform;
}
.para-layer{
	position: absolute;
	inset: 0;
	transform-style: preserve-3d;
	will-change: transform;
	pointer-events: none;
}
.para-layer[data-layer="moon"]{ display: grid; place-items: center; }
.pix-moon{ width: 66px; height: 66px; filter: drop-shadow(0 0 16px rgba(255,216,77,.55)); }
.pix-heart{
	position: absolute;
	left: 50%; top: 46%;
	margin-left: -45px;
	width: 54px; height: 48px;
	filter: drop-shadow(0 0 8px rgba(255,77,141,.8));
}
.para-layer[data-layer="stars"] span{
	position: absolute;
	width: 9px; height: 9px;
	animation: twinkle 2.4s ease-in-out infinite;
}
.star.s1{ left: 12%; top: 18%; }
.star.s2{ left: 82%; top: 12%; animation-delay: .6s; }
.star.s3{ left: 68%; top: 30%; animation-delay: 1.1s; }
.star.s4{ left: 24%; top: 34%; animation-delay: 1.6s; }
.star.s5{ left: 46%; top: 10%; animation-delay: .3s; }
@keyframes twinkle{
	0%,100%{ opacity: .35; }
	50%{ opacity: 1; }
}
.para-layer[data-layer="hills"]{ display: flex; align-items: flex-end; }
.pix-hill{
	position: absolute;
	bottom: 0;
	background: #101a38;
	border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}
.hill-a{ left: -8%; width: 58%; height: 62%; background: #0e1834; }
.hill-b{ right: -10%; width: 66%; height: 74%; background: #141f40; }
.para-layer[data-layer="ground"]{
	background: linear-gradient(180deg, rgba(20,30,20,0) 0%, #0e1a12 30%, #0a140e 100%);
}
.pix-tree{
	position: absolute;
	bottom: 12%;
}
.t1{ left: 12%; }
.t2{ right: 16%; }
.pix-tree, .pix-heart, .pix-moon{ transform: translateZ(0); }

/* ============================================================
   Demo ⑥ 能力边界 + 压力测试
   ============================================================ */
.boundary-grid{
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 12px;
}
@media (max-width: 760px){
	.boundary-grid{ grid-template-columns: 1fr; }
}
.boundary-col{
	border: 2px solid var(--line);
	background: var(--panel);
	padding: 12px 14px;
}
.boundary-col.can{ border-color: rgba(61,220,132,.5); }
.boundary-col.cannot{ border-color: rgba(255,107,107,.5); }
.boundary-head{
	font-size: 13px;
	font-weight: 700;
	margin-bottom: 8px;
	padding-bottom: 6px;
	border-bottom: 1px dashed var(--line);
}
.boundary-col.can .boundary-head{ color: var(--green); }
.boundary-col.cannot .boundary-head{ color: var(--red); }
.boundary-col ul{
	margin: 0;
	padding-left: 18px;
	font-size: 11.5px;
	line-height: 2;
	color: var(--dim);
}
.boundary-col.can li::marker{ color: var(--green); }
.boundary-col.cannot li::marker{ color: var(--red); }

.stress-box{
	border: 2px solid var(--line);
	background: var(--panel);
	display: flex;
	flex-direction: column;
	gap: 10px;
	padding: 12px;
	flex: 1 1 auto;
	min-height: 200px;
}
.stress-title{ font-size: 13px; font-weight: 700; color: #fff; }
.stress-ctrl{ display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.stress-ctrl button{
	font-size: 12px;
	padding: 6px 14px;
	border: 2px solid var(--cyan);
	background: transparent;
	color: var(--cyan);
	cursor: pointer;
	transition: all .15s ease;
	box-shadow: 3px 3px 0 rgba(0,0,0,.45);
}
.stress-ctrl button:hover{ background: rgba(77,216,255,.15); }
.stress-ctrl button:active{ transform: translate(2px,2px); box-shadow: 1px 1px 0 rgba(0,0,0,.45); }
#btnStressClear{ border-color: var(--red); color: var(--red); }
#btnStressClear:hover{ background: rgba(255,107,107,.12); }
.stress-fps{
	margin-left: auto;
	font-size: 14px;
	font-weight: 700;
	color: var(--green);
}
.stress-fps.low{ color: var(--red); }
.stress-fps.mid{ color: var(--yellow); }
.stress-stage{
	flex: 1 1 auto;
	position: relative;
	min-height: 140px;
	border: 1px dashed var(--line);
	background: rgba(0,0,0,.35);
	overflow: hidden;
}
.stress-empty{
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	text-align: center;
	font-size: 12px;
	color: var(--dim);
	line-height: 1.9;
	padding: 0 20px;
}
.stress-card{
	position: absolute;
	width: 46px; height: 66px;
	perspective: 300px;
	will-change: transform;
}
.stress-inner{
	position: relative;
	width: 100%; height: 100%;
	transform-style: preserve-3d;
	transition: transform .8s ease;
}
.stress-inner.flip{ transform: rotateY(180deg); }
.stress-face{
	position: absolute;
	inset: 0;
	backface-visibility: hidden;
	border: 1px solid #fff;
	display: grid;
	place-items: center;
	font-size: 12px;
}
.stress-face.sf-back{
	background: repeating-linear-gradient(45deg, #1c1c2a 0 6px, #22223a 6px 12px);
	color: #fff;
}
.stress-face.sf-front{
	background: linear-gradient(160deg, #1e2a3a, #0b1220);
	transform: rotateY(180deg);
	font-size: 18px;
}

/* ==================== 页脚 ==================== */
.foot{
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 8px;
	padding: 8px 16px;
	border-top: 2px solid var(--line);
	background: #0e0e1a;
	font-size: 10px;
	color: var(--dim);
	flex-wrap: wrap;
}
.foot-api{ color: rgba(167,139,250,.8); }

/* 滚动条（像素风） */
::-webkit-scrollbar{ width: 8px; height: 8px; }
::-webkit-scrollbar-track{ background: #0c0c18; }
::-webkit-scrollbar-thumb{ background: #2c2c48; border: 1px solid #0c0c18; }