/**
 * Cart Preview Shadow DOM Styles
 *
 * These styles are injected into the Shadow DOM for full encapsulation.
 * Mobile-first approach: Base styles target mobile, enhanced for larger screens.
 *
 * @package EDD\Cart\Preview
 */

@use "../../../scss/variables/mixins" as mixins;
@use "~@wordpress/base-styles/breakpoints" as breakpoints;
@use "./keyframes" as *;

// ============================================================================
// CSS Custom Properties (Variables)
// ============================================================================
// These are exposed for theme/user customization. Define them at :host level
// with sensible defaults, then reference them throughout the stylesheet.

:host {
	// Typography - allow font-family to inherit from site
	--edd-cart-preview-font-family: inherit;
	--edd-cart-preview-font-size-base: 16px;
	--edd-cart-preview-font-size-small: 14px;
	--edd-cart-preview-font-size-medium: 15px;
	--edd-cart-preview-font-size-large: 18px;
	--edd-cart-preview-font-size-xlarge: 20px;
	--edd-cart-preview-line-height: 1.5;

	// Colors - UI
	--edd-cart-preview-color-text: #333;
	--edd-cart-preview-color-text-muted: #666;
	--edd-cart-preview-color-danger: #cc1818;
	--edd-cart-preview-color-danger-light: #cc181819; // 10% opacity
	--edd-cart-preview-color-danger-lighter: #cc18184d; // 30% opacity
	--edd-cart-preview-color-border: #e0e0e0;
	--edd-cart-preview-color-background: #ffffff;
	--edd-cart-preview-color-background-dimmed: #ffffff80; // 50% opacity
	--edd-cart-preview-color-backdrop: #00000080; // 50% opacity
	--edd-cart-preview-color-message: #0073aa;
	--edd-cart-preview-color-message-light: #0073aa19; // 10% opacity
	--edd-cart-preview-color-link: var(--edd-cart-preview-color-text);
	--edd-cart-preview-color-link-hover: var(--edd-cart-preview-color-primary-hover);

	// Layout
	--edd-cart-preview-border-radius: 4px;
	--edd-cart-preview-dialog-width: 400px;
	--edd-cart-preview-spacing-sm: 12px;
	--edd-cart-preview-spacing-md: 16px;
	--edd-cart-preview-spacing-lg: 24px;
	--edd-cart-preview-spacing-xl: 48px;

	// Shadows
	--edd-cart-preview-shadow-dialog: -2px 0 8px #0000001a; // 10% opacity
	--edd-cart-preview-shadow-button: 0 4px 12px #00000026; // 15% opacity

	// Direction context
	direction: inherit;
}

// ============================================================================
// Internal SCSS Variables
// ============================================================================
// These are for internal use only and not exposed for customization

$z-index-overlay: 999999;
$transition-speed: 0.4s;
$mobile-top-offset: 90px; // Space visible above mobile dialog

// Mixins
@mixin transition($property: all, $duration: $transition-speed) {
	transition: $property $duration ease;
}

@mixin button-reset {
	background: transparent;
	border: none;
	cursor: pointer;
	padding: 0;
}

// ============================================================================
// Shadow DOM Base Styles
// ============================================================================
// Apply base styles to root containers to establish consistent baseline
// while allowing intentional inheritance (like font-family)

.cart-preview__dialog,
.cart-preview__button--trigger {
	// Typography - inherit font-family from site, control sizes
	font-family: var(--edd-cart-preview-font-family);
	font-size: var(--edd-cart-preview-font-size-base);
	line-height: var(--edd-cart-preview-line-height);
	font-weight: 400;
	font-style: normal;
	text-align: left;
	text-transform: none;
	letter-spacing: normal;
	word-spacing: normal;
	color: var(--edd-cart-preview-color-text);
	text-decoration: none;
	text-shadow: none;

	a {
		color: var(--edd-cart-preview-color-link);
		text-decoration: none;

		&:hover {
			color: var(--edd-cart-preview-color-link-hover);
		}
	}
}

// Ensure all elements use border-box
* {
	box-sizing: border-box;
}

// Native HTML5 dialog element
.cart-preview__dialog {
	// Reset default dialog styles (applies to all screen sizes)
	border: none;
	padding: 0;
	margin: 0;
	max-width: none;
	max-height: none;

	// Closed state - respect native display: none
	// (don't override display when closed)

	// Open state - now we can override the display and position
	&[open] {
		// MOBILE FIRST: Bottom slideout panel
		position: fixed;
		bottom: 0;
		left: 0;
		right: 0;
		top: $mobile-top-offset; // Leaves space above so users can see content behind
		margin: 0;

		width: 100%;
		height: auto;
		max-height: calc(100vh - #{$mobile-top-offset});

		// Visual styling - mobile
		background: var(--edd-cart-preview-color-background);
		box-shadow: 0 -2px 8px #0000001a; // 10% opacity
		border-radius: var(--edd-cart-preview-spacing-sm) var(--edd-cart-preview-spacing-sm) 0 0;

		// Layout
		display: flex;
		flex-direction: column;

		// Start off-screen at bottom, then slide up
		transform: translateY(100%);
		animation: slideUp $transition-speed ease forwards;

		// MEDIUM SCREENS AND UP (782px+): Right slideout panel
		@media ( min-width: breakpoints.$break-medium ) {
			// Change to right slideout positioning
			top: 0;
			right: 0;
			bottom: 0;
			left: auto; // Override mobile left: 0

			max-width: var(--edd-cart-preview-dialog-width);
			height: 100%;
			max-height: none;

			// Visual styling - desktop
			box-shadow: var(--edd-cart-preview-shadow-dialog);
			border-radius: var(--edd-cart-preview-spacing-sm) 0 0 var(--edd-cart-preview-spacing-sm);

			// Start off-screen to the right, then slide in
			transform: translateX(100%);
			animation: slideIn $transition-speed ease forwards;
		}
	}

	// Closing state - trigger exit animations
	&.closing {
		// MOBILE: Slide down animation
		animation: slideDown $transition-speed ease forwards;

		// MEDIUM SCREENS AND UP: Slide out to right animation
		@media ( min-width: breakpoints.$break-medium ) {
			animation: slideOut $transition-speed ease forwards;
		}
	}

	// Native backdrop
	&::backdrop {
		background: var(--edd-cart-preview-color-backdrop);
		@include transition(opacity);
	}
}

// ============================================================================
// RTL Support for Desktop View
// ============================================================================

// RTL: Dialog positioning and styling
@media ( min-width: breakpoints.$break-medium ) {
	:host([dir="rtl"]) .cart-preview__dialog[open] {
		// Mirror positioning - panel on left side
		left: 0;
		right: auto;

		// Flip rounded corners to right side (away from screen edge)
		border-radius: 0 var(--edd-cart-preview-spacing-md) var(--edd-cart-preview-spacing-md) 0;

		// Flip shadow to right side
		box-shadow: 2px 0 8px #0000001a; // 10% opacity

		// Start animation from left side
		transform: translateX(-100%);
		animation: slideInRTL $transition-speed ease forwards;
	}

	// RTL: Closing animation slides out to left
	:host([dir="rtl"]) .cart-preview__dialog.closing {
		animation: slideOutRTL $transition-speed ease forwards;
	}
}

.cart-preview__header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: var(--edd-cart-preview-spacing-md);
	border-bottom: 1px solid var(--edd-cart-preview-color-border);
	flex-shrink: 0; // Prevent header from shrinking when content is scrollable

	@media ( min-width: breakpoints.$break-medium ) {
		padding: var(--edd-cart-preview-spacing-lg);
	}
}

.cart-preview__title {
	margin: 0;
	font-size: var(--edd-cart-preview-font-size-large);
	font-weight: 600;

	@media ( min-width: breakpoints.$break-medium ) {
		font-size: var(--edd-cart-preview-font-size-xlarge);
	}
}

.cart-preview__close {
	@include button-reset;
	font-size: 24px;
	line-height: 1;
	padding: 0.5rem;
	color: var(--edd-cart-preview-color-text-muted);
	@include transition(color, 0.2s);

	svg {
		width: 24px;
		height: 24px;
		display: block;
	}

	.screen-reader-text {
		@include mixins.screen-reader-text;
	}

	&:hover,
	&:focus {
		color: var(--edd-cart-preview-color-text);
	}

	&:focus {
		outline: 2px solid var(--edd-cart-preview-color-primary);
		outline-offset: 2px;
	}
}

.cart-preview__content {
	flex: 1;
	overflow-y: auto;
	overflow-x: hidden;
	padding: var(--edd-cart-preview-spacing-md);
	// Ensure smooth scrolling on touch devices
	-webkit-overflow-scrolling: touch;
	display: flex;
	flex-direction: column;
	position: relative;

	@media ( min-width: breakpoints.$break-medium ) {
		padding: var(--edd-cart-preview-spacing-lg);
	}
}

.cart-preview__scroll-indicator {
	position: fixed;
	bottom: calc(60px + var(--edd-cart-preview-spacing-md)); // Above footer height
	left: 50%;
	transform: translateX(-50%);
	display: flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	background: var(--edd-cart-preview-color-background);
	border: 1px solid var(--edd-cart-preview-color-border);
	border-radius: 50%;
	box-shadow: 0 2px 8px #00000014; // 8% opacity
	pointer-events: none;
	z-index: 10;
	animation: bounce 2s infinite;

	@media ( min-width: breakpoints.$break-medium ) {
		bottom: calc(60px + var(--edd-cart-preview-spacing-lg)); // Above footer height
	}
}

.cart-preview__scroll-indicator-icon {
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--edd-cart-preview-color-text-muted);

	svg {
		width: 20px;
		height: 20px;
		display: block;
	}
}

.cart-preview__loading {
	display: flex;
	align-items: center;
	justify-content: center;
	padding: var(--edd-cart-preview-spacing-lg);
	color: var(--edd-cart-preview-color-text-muted);
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: 999999;
	background: var(--edd-cart-preview-color-background-dimmed);

	@media ( min-width: breakpoints.$break-medium ) {
		padding: var(--edd-cart-preview-spacing-xl) var(--edd-cart-preview-spacing-lg);
	}
}

.cart-preview__error {
	padding: var(--edd-cart-preview-spacing-md);
	margin-bottom: var(--edd-cart-preview-spacing-md);
	background: var(--edd-cart-preview-color-danger-light);
	border: 1px solid var(--edd-cart-preview-color-danger-lighter);
	color: var(--edd-cart-preview-color-danger);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--edd-cart-preview-spacing-md);

	&--dismiss {
		@include button-reset;
		font-size: 20px;
		line-height: 1;
		padding: 0 0.5rem;
	}
}

.cart-preview__empty {
	text-align: center;
	padding: var(--edd-cart-preview-spacing-lg);
	color: var(--edd-cart-preview-color-text-muted);

	@media ( min-width: breakpoints.$break-medium ) {
		padding: var(--edd-cart-preview-spacing-xl) var(--edd-cart-preview-spacing-lg);
	}
}

.cart-preview__items {
	display: flex;
	flex-direction: column;
	gap: var(--edd-cart-preview-spacing-lg);
	flex-grow: 1;

	&-list {
		display: flex;
		flex-direction: column;
		gap: var(--edd-cart-preview-spacing-md);
	}
}

.cart-preview__item {
	display: flex;
	gap: var(--edd-cart-preview-spacing-md);
	padding: var(--edd-cart-preview-spacing-md);
	border: 1px solid var(--edd-cart-preview-color-border);
	border-radius: var(--edd-cart-preview-border-radius);
	flex-wrap: wrap;

	&__messages {
		flex-basis: 100%;
		display: flex;
		flex-direction: column;
		margin-top: 8px;
		overflow-x: hidden;
		word-wrap: break-word;
		font-size: var(--edd-cart-preview-font-size-small);
		color: var(--edd-cart-preview-color-text-muted);
		line-height: 1.5;
	}

	&__message {
		font-style: italic;
		padding: 6px 10px;
		background-color: var(--edd-cart-preview-color-message-light);
		border-left: 3px solid var(--edd-cart-preview-color-message);

		&--error {
			border-left-color: var(--edd-cart-preview-color-danger);
			background-color: var(--edd-cart-preview-color-danger-light);
		}
	}
}

.cart-preview__item-fees {
	font-size: var(--edd-cart-preview-font-size-small);
	color: var(--edd-cart-preview-color-text-muted);
	margin-left: var(--edd-cart-preview-spacing-md);
}

.cart-preview__item-image {
	width: 60px;
	height: 60px;
	object-fit: cover;
	border-radius: var(--edd-cart-preview-border-radius);
	flex-shrink: 0; // Prevent image from shrinking on narrow screens
}

.cart-preview__item-details {
	flex: 1;
	min-width: 0; // Allow text to truncate properly
}

.cart-preview__item-name {
	font-weight: 600;
	margin: 0 0 0.5rem 0;
	font-size: var(--edd-cart-preview-font-size-medium);
	// Handle long product names on mobile
	overflow-wrap: break-word;
	word-wrap: break-word;
}

.cart-preview__item-price {
	color: var(--edd-cart-preview-color-text-muted);
	font-size: var(--edd-cart-preview-font-size-small);
}

.cart-preview__item-quantity {
	margin-top: 0.5rem;
}

.cart-preview__item-remove {
	@include button-reset;
	color: #999;
	font-size: 20px;
	line-height: 1;
	padding: 0.25rem 0.5rem;
	flex-shrink: 0;
	@include transition(color, 0.2s);
	align-self: center;

	svg {
		width: 20px;
		height: 20px;
		display: block;
	}

	.screen-reader-text {
		@include mixins.screen-reader-text;
	}

	&:hover,
	&:focus {
		color: var(--edd-cart-preview-color-danger);
	}

	&:focus {
		outline: 2px solid var(--edd-cart-preview-color-primary);
		outline-offset: 2px;
	}
}

.cart-preview__summary {
	border-top: 2px solid var(--edd-cart-preview-color-border);
	padding-top: var(--edd-cart-preview-spacing-lg);
	margin-top: auto;
	display: flex;
	flex-direction: column;
	gap: var(--edd-cart-preview-spacing-md);

	&--taxes {
		font-size: 13px;
		font-style: italic;
		color: var(--edd-cart-preview-color-text-muted);
		margin: 0;
	}

	&-row {
		display: flex;
		justify-content: space-between;
		margin: 0;
		font-size: var(--edd-cart-preview-font-size-small);

		@media ( min-width: breakpoints.$break-medium ) {
			font-size: var(--edd-cart-preview-font-size-base);
		}
	}

	&-label {
		font-weight: 600;
	}
}

.cart-preview__footer {
	padding: var(--edd-cart-preview-spacing-md);
	border-top: 1px solid var(--edd-cart-preview-color-border);
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 0.75rem;
	flex-shrink: 0; // Prevent footer from shrinking when content is scrollable

	@media ( min-width: breakpoints.$break-medium ) {
		padding: var(--edd-cart-preview-spacing-lg);
	}
}

.cart-preview__button {
	padding: 0.75rem var(--edd-cart-preview-spacing-md);
	border: none;
	border-radius: var(--edd-cart-preview-border-radius);
	font-size: var(--edd-cart-preview-font-size-medium);
	font-weight: 600;
	cursor: pointer;
	@include transition(all, 0.2s);
	text-align: center;
	text-decoration: none;
	display: block;

	@media ( min-width: breakpoints.$break-medium ) {
		padding: 0.75rem var(--edd-cart-preview-spacing-lg);
		font-size: var(--edd-cart-preview-font-size-base);
	}

	&:focus {
		outline: 2px solid var(--edd-cart-preview-color-primary);
		outline-offset: 2px;
	}

	&.cart-preview__button--primary {
		background: var(--edd-cart-preview-color-primary);
		color: var(--edd-cart-preview-color-primary-text);
		flex-grow: 1;

		&:hover,
		&:focus {
			background: var(--edd-cart-preview-color-primary-hover);
			color: var(--edd-cart-preview-color-primary-text);
		}
	}

	&.cart-preview__button--secondary {
		background: transparent;
		color: var(--edd-cart-preview-color-primary);
		border: 1px solid var(--edd-cart-preview-color-primary);

		&:hover,
		&:focus {
			background: #f0f0f0;
		}
	}
}

.cart-preview__spinner {
	@include mixins.edd-spinner(20px, #f3f3f3, #666, 2px);
}

.screen-reader-text {
	@include mixins.screen-reader-text;
}

// Floating cart button
.cart-preview__button--trigger {
	position: fixed;
	bottom: 20px;
	left: 20px;
	width: 60px;
	height: 60px;
	border-radius: 50%;
	background: var(--edd-cart-preview-color-background);
	border: none;
	box-shadow: var(--edd-cart-preview-shadow-button);
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 999998;
	@include transition(all, 0.2s);

	@media ( min-width: breakpoints.$break-medium ) {
		width: 80px;
		height: 80px;
	}

	svg {
		width: 28px;
		height: 28px;
		stroke: var(--edd-cart-preview-color-text);
		color: var(--edd-cart-preview-color-text);

		@media ( min-width: breakpoints.$break-medium ) {
			width: 32px;
			height: 32px;
		}
	}

	&--small {
		width: 48px;
		height: 48px;

		svg {
			width: 20px;
			height: 20px;
		}
	}

	&--right {
		right: 20px;
		left: auto;
	}

	&:hover {
		box-shadow: 0 6px 16px #00000033; // 20% opacity
		transform: scale(1.05);
	}

	&:focus {
		outline: 2px solid var(--edd-cart-preview-color-primary);
		outline-offset: 2px;
	}

	:host([dir="rtl"]) & {
		left: auto;
		right: 20px;
	}
}

.cart-preview__quantity-control {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	border: 1px solid var(--edd-cart-preview-color-border);
	border-radius: var(--edd-cart-preview-border-radius);
	padding: 4px;
}

.cart-preview__quantity-button {
	width: 28px;
	height: 28px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: none;
	border: none;
	cursor: pointer;
	font-size: var(--edd-cart-preview-font-size-base);
	color: var(--edd-cart-preview-color-text);
	border-radius: 3px;
	@include transition(all, 0.2s);

	svg {
		width: 16px;
		height: 16px;
	}

	.screen-reader-text {
		@include mixins.screen-reader-text;
	}

	&:hover:not(:disabled) {
		background: #f3f4f6;
		color: var(--edd-cart-preview-color-text);
	}

	&:disabled {
		opacity: 0.4;
		cursor: not-allowed;
	}

	// Accessible focus indicator
	&:focus {
		outline: 2px solid var(--edd-cart-preview-color-primary);
		outline-offset: 2px;
	}
}

.cart-preview__quantity-display {
	min-width: 2ch;
	text-align: center;
	font-size: var(--edd-cart-preview-font-size-small);
	font-weight: 500;
	color: var(--edd-cart-preview-color-text);
}

// Hidden utility class - doubled for specificity
.hidden.hidden {
	display: none;
}