/**
 * Home Page — Hero Section (Premium)
 *
 * Cinematic hero with gradient title, animated CTA,
 * floating magazine, and staggered blur-reveal animations.
 *
 * Architecture:
 *   .home-hero__book       → outer: fadeUp + idle float
 *   .home-hero__book-tilt  → inner: JS parallax (--rx / --ry)
 *   .home-hero__book-img   → image, no clipping
 *
 * Dependencies: home-base.css, child theme design tokens
 */

/* ============================================
   LAYOUT
   ============================================ */

.home-hero {
	position: relative;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	justify-content: center;
	min-height: 100vh;
	min-height: 100dvh;
	padding: var(--spacing-3xl) 0 5rem;
	--section-bg: var(--color-bg-primary);
}

.home-hero__container {
	position: relative;
	z-index: 2;
}

/* ============================================
   GRADIENT BACKGROUND — Custom PNG
   ============================================ */

.home-hero__gradient {
	position: absolute;
	inset: 0;
	z-index: 0;
	background: url('../../images/gradient-bg4.png') center center / cover no-repeat;
	opacity: 0.90 !important;
	pointer-events: none;
}

[data-theme="light"] .home-hero__gradient {
	opacity: 0.6;
}

/* ============================================
   ANIMATED KEYWORD RIBBON
   ============================================ */

.home-hero__ribbon {
	position: absolute;
	inset: 0;
	z-index: 1;
	pointer-events: none;
	overflow: hidden;
	opacity: 0;
	transition: opacity 1.5s ease 0.8s;
}

.home-hero.home-hero--ribbon-visible .home-hero__ribbon {
	opacity: 1;
}

.home-hero__ribbon-svg {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
}

.home-hero__ribbon-text {
	font-size: 1rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	fill: rgba(255, 255, 255, 0.07);
}

[data-theme="light"] .home-hero__ribbon-text {
	fill: rgba(0, 0, 0, 0.12);
}


/* ============================================
   KICKER — Small label above title
   ============================================ */

.home-hero__top {
	margin-bottom: 3rem;
}

.home-hero__kicker {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	font-size: 0.75rem;
	font-weight: 600;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--color-accent);
	margin-bottom: 1.25rem;
}

.home-hero__kicker-line {
	display: inline-block;
	width: 32px;
	height: 2px;
	background: linear-gradient(90deg, var(--color-accent), transparent);
	border-radius: 2px;
}

/* ============================================
   TITLE — Gradient accent on <em>
   ============================================ */

.home-hero__title {
	font-size: clamp(2.6rem, 6vw, 4.5rem);
	font-weight: 800;
	line-height: 1.06;
	letter-spacing: -0.025em;
	max-width: 700px;
	margin: 0;
	color: var(--color-text-primary);
}

.home-hero__title em {
	font-style: normal;
	background: linear-gradient(135deg, #60a5fa, #a78bfa, #f0553d);
	background-size: 200% auto;
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
	animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
	0%, 100% { background-position: 0% center; }
	50%      { background-position: 100% center; }
}

/* ============================================
   MIDDLE ROW — Magazine + Aside text
   ============================================ */

.home-hero__row {
	display: grid;
	grid-template-columns: auto auto;
	grid-template-rows: auto auto;
	justify-content: center;
	column-gap: 4rem;
	row-gap: 1.5rem;
}

/* --- Magazine --- */

.home-hero__book {
	grid-column: 1;
	grid-row: 1 / 3;
	width: min(420px, 80vw);
}

.home-hero__book-tilt {
	transform: perspective(1000px)
		rotateX(var(--rx, 0deg))
		rotateY(var(--ry, 0deg));
	transition: transform 0.15s ease-out;
	will-change: transform;
}

.home-hero__book-img {
	display: block;
	width: 100%;
	height: auto;
	filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.35));
}

[data-theme="light"] .home-hero__book-img {
	filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.15));
}

/* --- Aside text --- */

.home-hero__aside {
	grid-column: 2;
	grid-row: 1;
	max-width: 440px;
	display: flex;
	align-items: stretch;
	align-self: start;
	gap: 0.75rem;
	margin-top: 20px;
}

.home-hero__aside-card {
	padding: 1rem 1.25rem;
	border-radius: 14px;
	box-shadow:
		inset 0 1px 0 rgba(255, 255, 255, 0.08),
		0 4px 24px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .home-hero__aside-card {
	background: rgba(255, 255, 255, 0.15);
	border-color: rgba(255, 255, 255, 0.5);
	box-shadow:
		inset 0 1px 0 rgba(255, 255, 255, 0.6),
		0 4px 24px rgba(0, 0, 0, 0.06);
}

.home-hero__aside-line {
	flex-shrink: 0;
	width: 3px;
	min-height: 100%;
	border-radius: 3px;
	background: linear-gradient(180deg, #60a5fa, #a78bfa, #f0553d);
}

.home-hero__text {
	font-size: var(--font-size-base);
	line-height: 1.4;
	color: var(--color-text-secondary);
	margin: 0;
}

[data-theme="light"] .home-hero__text {
	color: var(--color-text-primary);
}

/* ============================================
   CTA — Gradient button with glow + arrow
   ============================================ */

.home-hero__cta {
	grid-column: 2;
	grid-row: 2;
	display: flex;
	justify-self: center;
	align-self: start;
}

.home-hero__button {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 0.75rem;
	padding: 1.2rem 3rem;
	background: linear-gradient(135deg, #2caff8 0%, #1d8cd4 100%);
	color: #ffffff;
	font-size: var(--font-size-base);
	font-weight: 500;
	letter-spacing: 0.02em;
	text-decoration: none;
	border: 1.5px solid rgba(255, 255, 255, 0.35);
	border-radius: 100px;
	cursor: pointer;
	overflow: hidden;
	transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
	            box-shadow 0.35s ease,
	            background 0.35s ease;
	box-shadow:
		0 8px 30px -8px rgba(44, 175, 248, 0.35),
		inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* Shimmer sweep on hover */
.home-hero__button::after {
	content: '';
	position: absolute;
	top: 0;
	left: -100%;
	width: 100%;
	height: 100%;
	background: linear-gradient(
		120deg,
		transparent 30%,
		rgba(255, 255, 255, 0.25) 50%,
		transparent 70%
	);
	transition: left 0.6s ease;
	pointer-events: none;
}

.home-hero__button:hover::after {
	left: 100%;
}

.home-hero__button:hover {
	transform: translateY(-3px) scale(1.03);
	box-shadow:
		0 16px 40px -8px rgba(44, 175, 248, 0.5),
		0 0 60px -10px rgba(44, 175, 248, 0.3),
		inset 0 1px 0 rgba(255, 255, 255, 0.2);
	color: #ffffff;
}

.home-hero__button:active {
	transform: translateY(-1px) scale(1);
}

.home-hero__button i {
	font-size: 0.85em;
	transition: transform 0.3s ease;
}

.home-hero__button:hover i {
	transform: translateX(4px);
}

.home-hero__button:focus-visible {
	outline: 2px solid var(--color-text-primary);
	outline-offset: 3px;
}

/* ============================================
   CINEMATIC REVEAL ANIMATIONS
   Blur + translateY + opacity, staggered per element.
   ============================================ */

.home-hero .home-reveal {
	opacity: 0;
	transform: translateY(2rem);
	filter: blur(6px);
}

.home-hero .home-reveal.home-reveal--visible {
	animation: heroReveal 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Stagger */
.home-hero__kicker.home-reveal--visible  { animation-delay: 0s; }
.home-hero__title.home-reveal--visible   { animation-delay: 0.12s; }
.home-hero__book.home-reveal--visible    { animation-delay: 0.3s; }
.home-hero__aside.home-reveal--visible   { animation-delay: 0.5s; }
.home-hero__cta.home-reveal--visible     { animation-delay: 0.65s; }

@keyframes heroReveal {
	from {
		opacity: 0;
		transform: translateY(2rem);
		filter: blur(6px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
		filter: blur(0);
	}
}

/* ============================================
   IDLE FLOAT — Magazine
   ============================================ */

.home-hero__book.home-reveal--visible {
	animation:
		heroReveal 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards,
		heroFloat 5s ease-in-out 1.2s infinite;
}

@keyframes heroFloat {
	0%, 100% { transform: translateY(0); }
	50%      { transform: translateY(-12px); }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 720px) {
	.home-hero__row {
		grid-template-columns: 1fr;
		grid-template-rows: auto auto auto;
		text-align: center;
		justify-items: center;
	}

	.home-hero__book {
		grid-column: 1;
		grid-row: 1;
	}

	.home-hero__aside {
		grid-column: 1;
		grid-row: 2;
		max-width: 380px;
		justify-content: center;
	}

	.home-hero__cta {
		grid-column: 1;
		grid-row: 3;
	}

	.home-hero__aside-line {
		display: none;
	}

	.home-hero__top {
		text-align: center;
	}

	.home-hero__kicker {
		justify-content: center;
	}

	.home-hero__ribbon-text {
		font-size: 0.75rem;
	}
}

@media (min-width: 768px) {
	.home-hero__book {
		width: min(460px, 45vw);
	}

	.home-hero__text {
		font-size: var(--font-size-lg);
	}
}

@media (min-width: 1024px) {
	.home-hero__book {
		width: 500px;
	}
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
	.home-hero .home-reveal {
		opacity: 1;
		transform: none;
		filter: none;
	}

	.home-hero .home-reveal.home-reveal--visible {
		animation: none;
	}

	.home-hero__book.home-reveal--visible {
		animation: none;
	}

	.home-hero__book-tilt {
		transition: none;
	}

	.home-hero__title em {
		animation: none;
	}

	.home-hero__button::after {
		display: none;
	}

	.home-hero__ribbon {
		transition: none;
		opacity: 1;
	}
}