/* ==========================================================================
   animations.css — Keyframes, Scroll-Reveals, Transitions
   ========================================================================== */

/* --------------------------------------------------------------------------
   Keyframes
   -------------------------------------------------------------------------- */

@keyframes fadeUp {
	from {
		opacity: 0;
		transform: translateY(20px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes fadeIn {
	from { opacity: 0; }
	to   { opacity: 1; }
}

@keyframes scaleIn {
	from {
		opacity: 0;
		transform: scale(0.96);
	}
	to {
		opacity: 1;
		transform: scale(1);
	}
}

@keyframes slideInRight {
	from {
		opacity: 0;
		transform: translateX(24px);
	}
	to {
		opacity: 1;
		transform: translateX(0);
	}
}

@keyframes linePulse {
	0%, 100% { opacity: 1; }
	50%       { opacity: 0.4; }
}

/* Hero-Video Fade-In */
@keyframes heroBgReveal {
	from { opacity: 0; }
	to   { opacity: 1; }
}

/* --------------------------------------------------------------------------
   Scroll-Reveal System (via IntersectionObserver in main.js)
   -------------------------------------------------------------------------- */

/* Initial hidden state */
.reveal {
	opacity: 0;
	transform: translateY(20px);
	transition: opacity var(--duration-slow) var(--ease-out),
	            transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
	opacity: 1;
	transform: translateY(0);
}

/* Stagger Delays */
.reveal--delay-1 { transition-delay: 100ms; }
.reveal--delay-2 { transition-delay: 200ms; }
.reveal--delay-3 { transition-delay: 300ms; }
.reveal--delay-4 { transition-delay: 400ms; }
.reveal--delay-5 { transition-delay: 500ms; }

/* Varianten */
.reveal--fade {
	transform: none;
}

.reveal--scale {
	transform: scale(0.97);
}

.reveal--scale.is-visible {
	transform: scale(1);
}

.reveal--left {
	transform: translateX(-20px);
}

.reveal--left.is-visible {
	transform: translateX(0);
}

.reveal--right {
	transform: translateX(20px);
}

.reveal--right.is-visible {
	transform: translateX(0);
}

/* --------------------------------------------------------------------------
   Hero Animations (Page Load)
   -------------------------------------------------------------------------- */

.hero__video,
.hero__image {
	animation: heroBgReveal 1.2s var(--ease-out) both;
}

.hero__content {
	animation: fadeUp 0.9s var(--ease-out) 0.3s both;
}

.hero__overline {
	animation: fadeUp 0.7s var(--ease-out) 0.1s both;
}

.hero__headline {
	animation: fadeUp 0.9s var(--ease-out) 0.25s both;
}

.hero__sub {
	animation: fadeUp 0.8s var(--ease-out) 0.4s both;
}

.hero__cta {
	animation: fadeUp 0.7s var(--ease-out) 0.55s both;
}

.hero__scroll-indicator {
	animation: fadeIn 1s var(--ease-out) 1.2s both;
}

/* --------------------------------------------------------------------------
   Hover Micro-Interactions
   -------------------------------------------------------------------------- */

/* Underline-Grow (für Text-Links) */
.hover-underline {
	position: relative;
	display: inline-block;
}

.hover-underline::after {
	content: '';
	position: absolute;
	bottom: -2px;
	left: 0;
	right: 0;
	height: 1px;
	background-color: currentColor;
	transform: scaleX(0);
	transform-origin: right;
	transition: transform var(--duration-base) var(--ease);
}

.hover-underline:hover::after {
	transform: scaleX(1);
	transform-origin: left;
}

/* --------------------------------------------------------------------------
   Loading Skeleton (für async Inhalte)
   -------------------------------------------------------------------------- */

.skeleton {
	background: linear-gradient(
		90deg,
		var(--color-surface-alt) 25%,
		var(--color-canvas) 50%,
		var(--color-surface-alt) 75%
	);
	background-size: 200% 100%;
	animation: skeletonShimmer 1.5s infinite;
	border-radius: var(--radius-sm);
}

@keyframes skeletonShimmer {
	0%   { background-position: 200% 0; }
	100% { background-position: -200% 0; }
}

/* --------------------------------------------------------------------------
   Scroll-Arrow (Hero)
   -------------------------------------------------------------------------- */

@keyframes scrollBounce {
	0%, 100% { transform: translateY(0); }
	50%       { transform: translateY(6px); }
}

.scroll-indicator {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--space-2);
	color: var(--color-text-dim);
	font-size: var(--text-xs);
	letter-spacing: 0.1em;
	text-transform: uppercase;
}

.scroll-indicator__arrow {
	width: 20px;
	height: 20px;
	animation: scrollBounce 2s var(--ease) infinite;
}

/* --------------------------------------------------------------------------
   Cart Toast
   -------------------------------------------------------------------------- */

.cart-toast {
	position: fixed;
	bottom: var(--space-8);
	left: 50%;
	transform: translateX(-50%) translateY(16px);
	display: flex;
	align-items: center;
	gap: var(--space-3);
	background: var(--color-navy);
	color: var(--color-text-light);
	padding: var(--space-3) var(--space-5);
	border-radius: var(--radius-md);
	font-size: var(--text-sm);
	font-weight: 500;
	box-shadow: var(--shadow-lg);
	z-index: 9999;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
	white-space: nowrap;
}

.cart-toast.is-active {
	opacity: 1;
	transform: translateX(-50%) translateY(0);
	pointer-events: auto;
}

.cart-toast__link {
	color: var(--color-cyan);
	text-decoration: none;
	font-weight: 600;
	padding-left: var(--space-3);
	margin-left: var(--space-1);
	border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.cart-toast__link:hover {
	opacity: 0.8;
}

@media (prefers-reduced-motion: reduce) {
	.cart-toast {
		transition: opacity 0.1s;
		transform: translateX(-50%);
	}
}