/* Hero V4 — khí chất tiên hiệp, không hạt DOM / không filter hue trên poster */

/* Tràn full chiều ngang: bỏ nhánh 100cqi + track max-content (phần trăm trên slide dễ co → vệt đen hai bên). Dùng viewport flex + track display:contents như fallback bridge. */
body.ui-v4 .km-home--ui-v4 > .km-x4-hero-wrap {
	width: 100%;
	max-width: none;
	min-width: 0;
	margin-left: 0;
	margin-right: 0;
	box-sizing: border-box;
}

body.ui-v4 .km-x4-hero .km-hero-v3__viewport {
	display: flex;
	flex-direction: row;
	flex-wrap: nowrap;
	position: relative;
	z-index: 1;
	width: 100%;
	max-width: none;
	min-width: 0;
	/* Tránh giật: scroll-snap + scrollTo(smooth) đánh nhau; để JS căn pixel theo clientWidth */
	scroll-snap-type: none;
	scroll-behavior: auto;
	touch-action: pan-x;
}

body.ui-v4 .km-x4-hero .km-hero-v3__track {
	display: contents;
}

body.ui-v4 .km-x4-hero .km-hero-v3__slide {
	flex: 0 0 100%;
	min-width: 100%;
	max-width: none;
	width: auto;
	box-sizing: border-box;
	scroll-snap-align: none;
	scroll-snap-stop: normal;
}

/* Poster chéo: tam giác trên-trái = ½ trên ảnh, tam giác dưới-phải = ½ dưới ảnh (đường BL → TR) */
.ui-v4 .km-x4-hero .km-hero-v3__slide::before {
	content: none;
}

.ui-v4 .km-x4-hero .km-x4-hero__poster-split {
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	overflow: hidden;
	transform: translateZ(0);
	contain: paint;
}

.ui-v4 .km-x4-hero .km-x4-hero__poster-half {
	position: absolute;
	inset: 0;
	display: block;
	background-image: var(--km-hero-poster);
	background-repeat: no-repeat;
	/* Scale nhẹ — tránh giật layer khi cuộn; bỏ filter/will-change */
	transform: scale(1.04);
	transform-origin: center center;
	backface-visibility: hidden;
}

/* Hai tam giác chung cạnh huyền TR → BL (cùng poster, cover + top/bottom để khớp seam) */
.ui-v4 .km-x4-hero .km-x4-hero__poster-half--top {
	clip-path: polygon(0 0, 100% 0, 0 100%);
	background-size: cover;
	background-position: center top;
	box-shadow: 4px 4px 28px rgba(0, 0, 0, 0.22);
}

.ui-v4 .km-x4-hero .km-x4-hero__poster-half--bottom {
	clip-path: polygon(100% 0, 100% 100%, 0 100%);
	background-size: cover;
	background-position: center bottom;
	box-shadow: -3px -3px 32px rgba(0, 0, 0, 0.28);
}

/* Vạch sáng trùng góc cắt TR–BL (135deg ≈ vuông; banner rộng vẫn ổn hơn to top right) */
.ui-v4 .km-x4-hero .km-x4-hero__poster-split::after {
	content: "";
	position: absolute;
	inset: 0;
	z-index: 1;
	pointer-events: none;
	background: linear-gradient(
		135deg,
		transparent 0%,
		transparent calc(50% - 0.9px),
		rgba(253, 244, 255, 0.26) 50%,
		transparent calc(50% + 0.9px),
		transparent 100%
	);
	mix-blend-mode: screen;
	opacity: 0.72;
}

.ui-v4 .km-x4-hero-wrap {
	position: relative;
	margin-bottom: 0.65rem;
}

.ui-v4 .km-x4-hero-wrap__mist {
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	border-radius: 0 0 var(--v4-radius-lg) var(--v4-radius-lg);
	background:
		radial-gradient(ellipse 120% 90% at 50% 100%, var(--v4-pk-10), transparent 52%),
		radial-gradient(ellipse 80% 70% at 12% 20%, var(--v4-deep-12), transparent 48%),
		radial-gradient(ellipse 55% 50% at 92% 35%, var(--v4-vi-22), transparent 50%);
}

.ui-v4 .km-x4-hero-wrap__particles {
	display: none;
}

.ui-v4 .km-x4-hero {
	position: relative;
	z-index: 2;
	border-radius: 0 0 var(--v4-radius-lg) var(--v4-radius-lg);
	overflow: hidden;
	border: 1px solid var(--v4-border);
	border-top: none;
	box-shadow:
		0 0 0 1px var(--v4-hl-06),
		0 28px 72px rgba(8, 2, 22, 0.72),
		0 0 80px var(--v4-vi-18);
}

/* Viền sáng trên cùng — “khung” imperial, không dùng pattern lặp */
.ui-v4 .km-x4-hero::before {
	content: "";
	position: absolute;
	left: 0;
	right: 0;
	top: 0;
	height: 3px;
	z-index: 4;
	pointer-events: none;
	background: linear-gradient(
		90deg,
		transparent 0%,
		var(--v4-hl-25) 18%,
		var(--v4-pk-45) 50%,
		var(--v4-hl-25) 82%,
		transparent 100%
	);
	box-shadow: 0 0 24px var(--v4-hl-25);
}

/*
 * Dots nằm trong luồng → vùng dưới viewport không có poster (::before), chỉ nền đen.
 * Đặt absolute đáy hero + gradient mờ để dots nằm trên ảnh banner.
 */
.ui-v4 .km-x4-hero .km-hero-v3__dots-wrap {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: 5;
	display: flex;
	flex-wrap: wrap;
	gap: 0.45rem;
	justify-content: center;
	align-items: center;
	padding: 1.35rem 0 1rem;
	box-sizing: border-box;
	pointer-events: none;
	background: linear-gradient(
		to top,
		rgba(4, 2, 14, 0.82) 0%,
		rgba(4, 2, 14, 0.35) 42%,
		transparent 100%
	);
}

.ui-v4 .km-x4-hero .km-hero-v3__dots-wrap .km-hero-v3__dot {
	pointer-events: auto;
}

/* Quang hoàn mềm bên phải — dưới nội dung slide (viewport z-index cao hơn) */
.ui-v4 .km-x4-hero__rune {
	position: absolute;
	right: -2%;
	top: 50%;
	width: min(48vw, 420px);
	height: min(48vw, 420px);
	transform: translateY(-50%);
	pointer-events: none;
	z-index: 0;
	border-radius: 50%;
	opacity: 0.62;
	background:
		radial-gradient(circle at 50% 50%, var(--v4-hl-14) 0%, transparent 42%),
		radial-gradient(circle at 50% 50%, transparent 46%, var(--v4-vi-20) 47%, transparent 52%),
		radial-gradient(circle at 50% 50%, transparent 62%, var(--v4-pk-10) 63%, transparent 68%),
		radial-gradient(circle at 50% 50%, transparent 78%, var(--v4-hl-08) 79%, transparent 84%);
	filter: blur(0.65px);
}

.ui-v4 .km-x4-hero .km-hero-v3__slide::after {
	background:
		linear-gradient(
			90deg,
			rgba(4, 2, 14, 0.96) 0%,
			rgba(10, 5, 24, 0.78) 28%,
			rgba(18, 8, 32, 0.35) 55%,
			rgba(8, 4, 20, 0.5) 78%,
			rgba(4, 2, 12, 0.75) 100%
		),
		radial-gradient(ellipse 90% 85% at 0% 50%, rgba(0, 0, 0, 0.55) 0%, transparent 58%),
		radial-gradient(ellipse 65% 55% at 88% 28%, var(--v4-vi-38) 0%, transparent 52%),
		radial-gradient(ellipse 50% 45% at 70% 85%, var(--v4-pk-12) 0%, transparent 45%);
}

.ui-v4 .km-x4-hero .km-hero-v3__title {
	font-family: var(--v4-font-display);
	color: transparent;
	background: var(--v4-grad-text-display);
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
	filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.85)) drop-shadow(0 0 36px var(--v4-vi-38));
	letter-spacing: 0.02em;
}

.ui-v4 .km-x4-hero .km-hero-v3__subtitle {
	color: var(--v4-text-soft);
	text-shadow: 0 1px 12px rgba(0, 0, 0, 0.65);
}

.ui-v4 .km-x4-hero .km-hero-v3__pill--accent {
	background: var(--v4-deep-55);
	border: 1px solid var(--v4-border);
	color: var(--v4-gold);
	box-shadow: 0 0 16px var(--v4-hl-14);
}

.ui-v4 .km-x4-hero .km-hero-v3__chip {
	border-color: var(--v4-border);
	background: rgba(28, 14, 48, 0.72);
	backdrop-filter: blur(8px);
}

/* Nền gradient + animation: responsive.css (km-v4-cta-flow) — không set background ở đây để không ghi đè */
.ui-v4 .km-x4-hero .km-hero-v3__btn--primary {
	color: var(--v4-on-gradient);
	border: none;
	font-weight: 800;
	letter-spacing: 0.03em;
	text-shadow: var(--v4-on-gradient-shadow);
	box-shadow:
		0 4px 24px var(--v4-hl-35),
		0 0 0 1px rgba(255, 255, 255, 0.12) inset;
}

.ui-v4 .km-x4-hero .km-hero-v3__btn--primary svg {
	color: inherit;
	fill: currentColor;
	filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.6));
}

.ui-v4 .km-x4-hero .km-hero-v3__btn--ghost {
	border-color: var(--v4-hl-35);
	color: var(--v4-text-main);
	background: rgba(0, 0, 0, 0.35);
	backdrop-filter: blur(10px);
}

.ui-v4 .km-x4-hero .km-hero-v3__dot {
	-webkit-appearance: none;
	appearance: none;
	margin: 0;
	box-sizing: border-box;
	width: 8px;
	height: 8px;
	padding: 0;
	border: 2px solid var(--v4-hl-38);
	border-radius: 50%;
	background: rgba(12, 6, 24, 0.92);
	background-clip: padding-box;
	cursor: pointer;
	transition: width 0.25s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.ui-v4 .km-x4-hero .km-hero-v3__dot:hover,
.ui-v4 .km-x4-hero .km-hero-v3__dot:focus-visible {
	background: rgba(28, 14, 48, 0.95);
	border-color: var(--v4-hl-55);
	outline: none;
}

.ui-v4 .km-x4-hero .km-hero-v3__dot.is-active {
	width: 22px;
	height: 8px;
	border: 0;
	border-radius: 999px;
	background: linear-gradient(90deg, var(--v4-primary), var(--v4-secondary), var(--v4-fuchsia));
	box-shadow: 0 0 12px var(--v4-hl-40);
}

.ui-v4 .km-x4-hero .km-hero-v3__story-inner {
	border-color: var(--v4-hl-28);
	box-shadow:
		0 12px 40px rgba(0, 0, 0, 0.45),
		inset 0 1px 0 rgba(255, 255, 255, 0.06),
		0 0 0 1px var(--v4-vi-15);
}

@media (prefers-reduced-motion: reduce) {
	.ui-v4 .km-x4-hero-wrap__mist {
		animation: none !important;
	}

	.ui-v4 .km-x4-hero .km-x4-hero__poster-half {
		transform: none;
	}
}