/* Weird Dream 试玩入口：配色取自标题画面（夜空、亮着的门、青粉重影） */
:root {
	--sky-top: #0d0a24;
	--sky-mid: #472e6b;
	--sky-horizon: #f59e8f;
	--ground: #050a0d;
	--ink: #fff8eb;
	--dim: #b3a6d9;
	--cyan: #4dfff2;
	--pink: #ff59b3;
	--door: #ffdb99;
	--error: #ffb8ad;
	--mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "DejaVu Sans Mono", Menlo, Consolas, monospace;
	--sans: system-ui, -apple-system, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* hidden 属性必须永远生效，不被下面任何 display 规则盖掉 */
[hidden] { display: none !important; }

*, *::before, *::after { box-sizing: border-box; }

html, body {
	margin: 0;
	height: 100%;
	background: var(--ground);
	color: var(--ink);
	font-family: var(--sans);
}

/* 入口画面：夜空渐变到地平线，下方一片深色草原 */
#gate {
	position: fixed;
	inset: 0;
	overflow: auto;
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	align-items: center;
	padding: clamp(1.5rem, 6vw, 5rem);
	background:
		linear-gradient(to bottom, transparent 68%, var(--ground) 68.5%),
		linear-gradient(to bottom, var(--sky-top) 0%, var(--sky-mid) 48%, var(--sky-horizon) 68%);
}

/* 地平线上那扇亮着的门 */
.door {
	position: absolute;
	right: 18%;
	bottom: 32%;
	width: clamp(1.6rem, 3.4vw, 3rem);
	aspect-ratio: 1 / 2;
	background: var(--door);
	box-shadow: 0 0 2.5rem 0.6rem rgba(255, 219, 153, 0.35);
	pointer-events: none;
}

/* 半透明暗幕：文字落在地平线的亮色上也看得清 */
.panel {
	position: relative;
	width: min(100%, 28rem);
	padding: clamp(1.25rem, 3vw, 2rem);
	background: rgba(8, 6, 26, 0.78);
	border-left: 2px solid rgba(77, 255, 242, 0.35);
}

.title {
	position: relative;
	isolation: isolate; /* 让重影留在字后面、暗幕前面 */
	margin: 0 0 0.75rem;
	font-family: var(--mono);
	font-size: clamp(2rem, 9vw, 3.5rem);
	white-space: nowrap;
	font-weight: 400;
	line-height: 1;
	letter-spacing: 0.02em;
	color: var(--ink);
}

/* 青色、粉色两层重影，偶尔错开抖一下 */
.title::before,
.title::after {
	content: attr(data-text);
	position: absolute;
	inset: 0;
	opacity: 0.55;
	pointer-events: none;
	z-index: -1;
	animation: ghost 6s steps(1) infinite;
}
.title::before { color: var(--cyan); transform: translateX(-1px); }
.title::after { color: var(--pink); transform: translateX(1px); }

@keyframes ghost {
	0%, 92%, 100% { translate: 0 0; }
	93% { translate: -3px 1px; }
	95% { translate: 3px -1px; }
	97% { translate: -1px 0; }
}

.lead {
	margin: 0 0 1.5rem;
	color: var(--sky-horizon);
	font-size: 1.05rem;
}

.field-label {
	display: block;
	margin-bottom: 0.4rem;
	color: var(--dim);
	font-size: 0.85rem;
}

.field-row {
	display: flex;
	gap: 0.5rem;
}

input, button {
	font: inherit;
	font-size: 1rem;
	min-height: 2.75rem;
	border-radius: 0;
}

#password {
	flex: 1;
	min-width: 0;
	padding: 0 0.75rem;
	color: var(--ink);
	background: rgba(5, 4, 20, 0.7);
	border: 1px solid var(--dim);
}
#password[aria-invalid="true"] { border-color: var(--error); }

button {
	padding: 0 1.1rem;
	color: var(--sky-top);
	background: var(--ink);
	border: 1px solid var(--ink);
	cursor: pointer;
}
button:hover:not(:disabled) { background: var(--cyan); border-color: var(--cyan); }
button:disabled, input:disabled { opacity: 0.5; cursor: progress; }

:focus-visible {
	outline: 2px solid var(--cyan);
	outline-offset: 3px;
}

/* 加载进度：一条细线，不抢画面 */
progress {
	display: block;
	width: 100%;
	height: 3px;
	margin-top: 1rem;
	appearance: none;
	border: 0;
	background: rgba(158, 143, 199, 0.25);
	color: var(--cyan);
}
progress::-webkit-progress-bar { background: rgba(158, 143, 199, 0.25); }
progress::-webkit-progress-value { background: var(--cyan); }
progress::-moz-progress-bar { background: var(--cyan); }

#status {
	min-height: 1.5em;
	margin: 0.75rem 0 0;
	color: var(--dim);
	font-size: 0.9rem;
}
#status[data-state="error"] { color: var(--error); }

#start-button {
	display: block;
	width: 100%;
	margin-top: 1rem;
	min-height: 3.25rem;
	font-size: 1.15rem;
	letter-spacing: 0.1em;
	background: var(--door);
	border-color: var(--door);
	box-shadow: 0 0 1.5rem rgba(255, 219, 153, 0.35);
}

.note {
	margin: 2rem 0 0;
	color: var(--dim);
	font-size: 0.8rem;
	line-height: 1.7;
	word-break: keep-all; /* 中文只在标点处换行，不把词拆开 */
	overflow-wrap: anywhere;
}

/* 游戏画布：铺满整个视口 */
#canvas {
	position: fixed;
	inset: 0;
	display: block;
	width: 100vw;
	height: 100vh;
	height: 100dvh;
	background: #000;
	outline: none;
	touch-action: none;
}

/* 开始以后：只剩游戏画面 */
body.playing { overflow: hidden; }
body.playing #gate { display: none; }

/* 窄屏：表单贴顶 */
@media (max-width: 40rem) {
	#gate { align-items: start; }
}

@media (prefers-reduced-motion: reduce) {
	.title::before, .title::after { animation: none; }
}