/**
 * css/components/loader.css
 * ============================================================
 * A LEGEND 2：Page Loader
 * ============================================================
 *
 * 役割：
 * - template-parts/components/loader.php が出力するページローダーの表示を定義します。
 * - 色、影、角丸、フォントはDesign Token / CSS変数に接続し、独自固定デザインにしません。
 * - fade / curtain / minimal の各タイプはclassだけで切り替えます。
 */

.aleg2-loader {
	position: fixed;
	inset: 0;
	/*
	 * Loaderは初期表示演出の最前面レイヤーです。
	 * fallbackもAdult Gateより高い値にして、tokens.cssの読み込みに失敗した場合でも
	 * Adult Gate警告画面がLoaderを追い抜かないようにします。
	 */
	z-index: var(--aleg2-z-loader, 1000000);
	display: grid;
	place-items: center;
	min-width: 100vw;
	min-height: 100vh;
	overflow: hidden;
	color: var(--aleg2-color-text, #ffffff);
	font-family: var(--aleg2-font-family-base, system-ui, sans-serif);
	background: var(--aleg2-color-bg, #050505);
	isolation: isolate;
	pointer-events: auto;
	visibility: visible;
	opacity: 1;
	transition:
		opacity var(--aleg2-motion-normal, 420ms) var(--aleg2-ease-standard, ease),
		visibility var(--aleg2-motion-normal, 420ms) var(--aleg2-ease-standard, ease);
}

.aleg2-loader.is-leaving {
	opacity: 0;
	pointer-events: none;
}

.aleg2-loader.is-hidden {
	display: none;
	visibility: hidden;
	opacity: 0;
	pointer-events: none;
}

.aleg2-loader__backdrop {
	position: absolute;
	inset: 0;
	z-index: -3;
	background:
		radial-gradient(circle at 50% 28%, color-mix(in srgb, var(--aleg2-color-primary, #8ee6ff) 18%, transparent), transparent 34%),
		radial-gradient(circle at 50% 72%, color-mix(in srgb, var(--aleg2-color-secondary, #b68cff) 16%, transparent), transparent 38%),
		linear-gradient(135deg, var(--aleg2-color-bg, #050505), var(--aleg2-color-surface, #111111));
}

.aleg2-loader__backdrop::after {
	position: absolute;
	inset: 0;
	content: "";
	background:
		linear-gradient(90deg, transparent, color-mix(in srgb, var(--aleg2-color-border, #ffffff) 8%, transparent), transparent),
		repeating-linear-gradient(0deg, color-mix(in srgb, var(--aleg2-color-text, #ffffff) 4%, transparent) 0 1px, transparent 1px 10px);
	mix-blend-mode: screen;
	opacity: 0.18;
}

.aleg2-loader__curtain {
	position: absolute;
	inset: 0;
	z-index: -2;
	pointer-events: none;
}

.aleg2-loader__inner {
	display: grid;
	gap: clamp(14px, 2vw, 24px);
	place-items: center;
	width: min(86vw, 420px);
	padding: clamp(24px, 4vw, 48px);
	text-align: center;
	transform: translateY(0);
	transition:
		transform var(--aleg2-motion-normal, 420ms) var(--aleg2-ease-standard, ease),
		opacity var(--aleg2-motion-normal, 420ms) var(--aleg2-ease-standard, ease);
}

.aleg2-loader.is-leaving .aleg2-loader__inner {
	transform: translateY(10px);
	opacity: 0;
}

.aleg2-loader__brand {
	display: inline-grid;
	place-items: center;
	max-width: min(260px, 72vw);
}

.aleg2-loader__logo {
	display: inline-grid;
	place-items: center;
	max-width: min(220px, 64vw);
}

.aleg2-loader__logo-img {
	display: block;
	width: auto;
	max-width: min(220px, 64vw);
	max-height: clamp(42px, 9vw, 86px);
	object-fit: contain;
	filter: drop-shadow(0 0 18px color-mix(in srgb, var(--aleg2-color-primary, #8ee6ff) 28%, transparent));
}

.aleg2-loader__site-name {
	display: inline-block;
	color: var(--aleg2-color-text, #ffffff);
	font-size: clamp(1.2rem, 4vw, 2.2rem);
	font-weight: 800;
	letter-spacing: 0.16em;
	line-height: 1.15;
	text-transform: uppercase;
	text-shadow: 0 0 22px color-mix(in srgb, var(--aleg2-color-primary, #8ee6ff) 35%, transparent);
}

.aleg2-loader__mark {
	position: relative;
	width: 72px;
	height: 72px;
	border: 1px solid color-mix(in srgb, var(--aleg2-color-border, #ffffff) 72%, transparent);
	border-radius: 50%;
	box-shadow: var(--aleg2-shadow-glow-primary, 0 0 28px rgba(142, 230, 255, 0.24));
}

.aleg2-loader__mark::before,
.aleg2-loader__mark::after {
	position: absolute;
	content: "";
	border-radius: 50%;
}

.aleg2-loader__mark::before {
	inset: -2px;
	border: 2px solid transparent;
	border-top-color: var(--aleg2-color-primary, #8ee6ff);
	border-right-color: var(--aleg2-color-secondary, #b68cff);
	animation: aleg2-loader-spin 1.25s linear infinite;
}

.aleg2-loader__mark::after {
	inset: 18px;
	background: linear-gradient(135deg, var(--aleg2-color-primary, #8ee6ff), var(--aleg2-color-secondary, #b68cff));
	box-shadow: var(--aleg2-shadow-glow-primary, 0 0 28px rgba(142, 230, 255, 0.32));
}

.aleg2-loader__dot {
	position: absolute;
	inset: 50% auto auto 50%;
	width: 7px;
	height: 7px;
	background: var(--aleg2-color-link-hover, var(--aleg2-color-primary, #8ee6ff));
	border-radius: 999px;
	box-shadow: 0 0 18px currentColor;
	transform: translate(-50%, -50%);
}

.aleg2-loader__text {
	margin: 0;
	color: var(--aleg2-color-text-muted, rgba(255, 255, 255, 0.7));
	font-size: var(--aleg2-font-size-xs, 0.75rem);
	font-weight: 800;
	letter-spacing: var(--aleg2-letter-spacing-wider, 0.18em);
	line-height: 1.4;
	text-transform: uppercase;
}

/* curtain：幕演出はCSS側で完結させ、JSはis-leavingを付けるだけにします。 */
.aleg2-loader--curtain .aleg2-loader__curtain::before,
.aleg2-loader--curtain .aleg2-loader__curtain::after {
	position: absolute;
	inset-block: 0;
	width: 50%;
	content: "";
	background:
		linear-gradient(135deg, color-mix(in srgb, var(--aleg2-color-surface, #111111) 94%, var(--aleg2-color-primary, #8ee6ff)), var(--aleg2-color-bg, #050505));
	box-shadow: 0 0 42px color-mix(in srgb, var(--aleg2-color-primary, #8ee6ff) 18%, transparent);
	transition: transform var(--aleg2-motion-slow, 900ms) var(--aleg2-ease-standard, ease);
}

.aleg2-loader--curtain .aleg2-loader__curtain::before {
	left: 0;
}

.aleg2-loader--curtain .aleg2-loader__curtain::after {
	right: 0;
}

.aleg2-loader--curtain.is-leaving {
	opacity: 1;
}

.aleg2-loader--curtain.is-leaving .aleg2-loader__curtain::before {
	transform: translateX(-100%);
}

.aleg2-loader--curtain.is-leaving .aleg2-loader__curtain::after {
	transform: translateX(100%);
}

.aleg2-loader--curtain.is-leaving .aleg2-loader__backdrop,
.aleg2-loader--curtain.is-leaving .aleg2-loader__inner {
	opacity: 0;
}

/* minimal：小さく軽い表示にします。 */
.aleg2-loader--minimal .aleg2-loader__mark {
	width: 52px;
	height: 52px;
	border-radius: var(--aleg2-radius-full, 999px);
}

.aleg2-loader--minimal .aleg2-loader__mark::after,
.aleg2-loader--minimal .aleg2-loader__dot {
	display: none;
}

.aleg2-loader--minimal .aleg2-loader__text {
	font-size: 0.68rem;
}

@keyframes aleg2-loader-spin {
	to {
		transform: rotate(360deg);
	}
}

@media (prefers-reduced-motion: reduce) {
	.aleg2-loader,
	.aleg2-loader *,
	.aleg2-loader *::before,
	.aleg2-loader *::after {
		animation: none !important;
		transition-duration: 1ms !important;
	}
}

@media print {
	.aleg2-loader {
		display: none !important;
	}
}