/**
 * Sidebar Layout System
 * Sidebar patterns with content/sidebar splits (70/30, 75/25, 66/33)
 * Implements specifications from TECHTRONIC_DESIGN_SYSTEM.md Section 4
 *
 * @package Techtronic_Learning
 * @since 1.0.0
 */

/* ==========================================================================
   Base Sidebar Layout Container
   ========================================================================== */

.sidebar-layout {
	display: grid;
	gap: var(--grid-gutter);
	align-items: start;
}

/* ==========================================================================
   Sidebar Position Variants
   ========================================================================== */

/* Content Left (70%) / Sidebar Right (30%) */
.sidebar-layout--right {
	grid-template-columns: 7fr 3fr;
	grid-template-areas: "content sidebar";
}

.sidebar-layout--right .sidebar-layout__content {
	grid-area: content;
}

.sidebar-layout--right .sidebar-layout__sidebar {
	grid-area: sidebar;
}

/* Sidebar Left (30%) / Content Right (70%) */
.sidebar-layout--left {
	grid-template-columns: 3fr 7fr;
	grid-template-areas: "sidebar content";
}

.sidebar-layout--left .sidebar-layout__content {
	grid-area: content;
}

.sidebar-layout--left .sidebar-layout__sidebar {
	grid-area: sidebar;
}

/* ==========================================================================
   Split Ratio Variants
   ========================================================================== */

/* 75/25 Split (Wider content area) */
.sidebar-layout--75-25.sidebar-layout--right {
	grid-template-columns: 3fr 1fr;
}

.sidebar-layout--75-25.sidebar-layout--left {
	grid-template-columns: 1fr 3fr;
}

/* 66/33 Split (Standard two-thirds/one-third) */
.sidebar-layout--66-33.sidebar-layout--right {
	grid-template-columns: 2fr 1fr;
}

.sidebar-layout--66-33.sidebar-layout--left {
	grid-template-columns: 1fr 2fr;
}

/* 60/40 Split (More balanced) */
.sidebar-layout--60-40.sidebar-layout--right {
	grid-template-columns: 3fr 2fr;
}

.sidebar-layout--60-40.sidebar-layout--left {
	grid-template-columns: 2fr 3fr;
}

/* ==========================================================================
   Sidebar Content Area
   ========================================================================== */

.sidebar-layout__content {
	min-width: 0; /* Prevent grid blowout */
}

.sidebar-layout__sidebar {
	min-width: 0; /* Prevent grid blowout */
}

/* ==========================================================================
   Sticky Sidebar
   ========================================================================== */

.sidebar-layout__sidebar--sticky {
	position: sticky;
	top: calc(var(--navbar-height) + var(--spacing-lg));
	align-self: start;
	max-height: calc(100vh - var(--navbar-height) - var(--spacing-2xl));
	overflow-y: auto;
}

/* Smooth scroll */
.sidebar-layout__sidebar--sticky {
	scrollbar-width: thin;
	scrollbar-color: var(--gray-600) transparent;
}

.sidebar-layout__sidebar--sticky::-webkit-scrollbar {
	width: 6px;
}

.sidebar-layout__sidebar--sticky::-webkit-scrollbar-track {
	background: transparent;
}

.sidebar-layout__sidebar--sticky::-webkit-scrollbar-thumb {
	background: var(--gray-600);
	border-radius: var(--radius-full);
}

.sidebar-layout__sidebar--sticky::-webkit-scrollbar-thumb:hover {
	background: var(--gray-500);
}

/* ==========================================================================
   Sidebar Sections
   ========================================================================== */

.sidebar-section {
	background: var(--surface-1);
	border: 1px solid var(--gray-700);
	border-radius: var(--radius-md);
	padding: var(--spacing-lg);
	margin-bottom: var(--spacing-lg);
}

.sidebar-section:last-child {
	margin-bottom: 0;
}

/* Light sidebar section (on dark background) */
.sidebar-section--light {
	background: var(--surface-light-0);
	border-color: var(--gray-200);
}

/* ==========================================================================
   Sidebar Section Header
   ========================================================================== */

.sidebar-section__header {
	margin-bottom: var(--spacing-md);
	padding-bottom: var(--spacing-md-);
	border-bottom: 1px solid var(--gray-700);
}

.sidebar-section--light .sidebar-section__header {
	border-bottom-color: var(--gray-200);
}

.sidebar-section__title {
	font-family: var(--font-display);
	font-size: var(--text-lg);
	font-weight: var(--weight-semibold);
	color: var(--text-heading-dark);
	margin: 0;
}

.sidebar-section--light .sidebar-section__title {
	color: var(--text-heading-light);
}

/* ==========================================================================
   Sidebar Section Content
   ========================================================================== */

.sidebar-section__content {
	font-family: var(--font-body);
	font-size: var(--text-base);
	line-height: 1.7;
	color: var(--text-body-dark);
}

.sidebar-section--light .sidebar-section__content {
	color: var(--text-body-light);
}

/* ==========================================================================
   Sidebar Widget List
   ========================================================================== */

.sidebar-widget-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.sidebar-widget-list__item {
	padding: var(--spacing-md-) 0;
	border-bottom: 1px solid var(--gray-700);
}

.sidebar-section--light .sidebar-widget-list__item {
	border-bottom-color: var(--gray-200);
}

.sidebar-widget-list__item:last-child {
	border-bottom: none;
	padding-bottom: 0;
}

.sidebar-widget-list__item:first-child {
	padding-top: 0;
}

.sidebar-widget-list__link {
	font-family: var(--font-body);
	font-size: var(--text-base);
	color: var(--text-body-dark);
	text-decoration: none;
	transition: color 0.2s ease;

	display: flex;
	align-items: center;
	gap: var(--spacing-sm);
}

.sidebar-section--light .sidebar-widget-list__link {
	color: var(--text-body-light);
}

.sidebar-widget-list__link:hover {
	color: var(--primary-500);
}

.sidebar-section--light .sidebar-widget-list__link:hover {
	color: var(--primary-700);
}

/* With icon */
.sidebar-widget-list__link svg {
	width: 16px;
	height: 16px;
	flex-shrink: 0;
}

/* ==========================================================================
   Sidebar CTA (Call-to-Action Block)
   ========================================================================== */

.sidebar-cta {
	background: linear-gradient(135deg, var(--accent-700) 0%, var(--accent-800) 100%);
	border-radius: var(--radius-md);
	padding: var(--spacing-xl);
	text-align: center;
	color: var(--color-white);
	margin-bottom: var(--spacing-lg);
}

.sidebar-cta__title {
	font-family: var(--font-display);
	font-size: var(--text-xl);
	font-weight: var(--weight-bold);
	margin: 0 0 var(--spacing-md-) 0;
	color: var(--color-white);
}

.sidebar-cta__text {
	font-family: var(--font-body);
	font-size: var(--text-sm);
	line-height: 1.6;
	margin: 0 0 var(--spacing-lg) 0;
	color: var(--color-white);
	opacity: 0.95;
}

.sidebar-cta__button {
	background: var(--color-white);
	color: var(--accent-800);
	border: none;
	padding: var(--spacing-md-) var(--spacing-xl);
	border-radius: var(--radius-base);
	font-family: var(--font-display);
	font-size: var(--text-base);
	font-weight: var(--weight-semibold);
	cursor: pointer;
	transition: all 0.2s ease;
	text-decoration: none;
	display: inline-block;
}

.sidebar-cta__button:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Sidebar Navigation Menu
   ========================================================================== */

.sidebar-nav {
	list-style: none;
	margin: 0;
	padding: 0;
}

.sidebar-nav__item {
	margin-bottom: var(--spacing-xs);
}

.sidebar-nav__link {
	display: block;
	padding: var(--spacing-md-) var(--spacing-md);

	font-family: var(--font-body);
	font-size: var(--text-base);
	font-weight: var(--weight-regular);
	color: var(--text-body-dark);
	text-decoration: none;

	border-radius: var(--radius-base);
	transition: all 0.2s ease;
}

.sidebar-section--light .sidebar-nav__link {
	color: var(--text-body-light);
}

.sidebar-nav__link:hover {
	background: var(--surface-2);
	color: var(--primary-500);
}

.sidebar-section--light .sidebar-nav__link:hover {
	background: var(--gray-100);
	color: var(--primary-700);
}

.sidebar-nav__link--active {
	background: var(--surface-2);
	color: var(--primary-500);
	font-weight: var(--weight-medium);
}

.sidebar-section--light .sidebar-nav__link--active {
	background: var(--primary-100);
	color: var(--primary-800);
}

/* With icon */
.sidebar-nav__link {
	display: flex;
	align-items: center;
	gap: var(--spacing-md-);
}

.sidebar-nav__icon {
	width: 20px;
	height: 20px;
	flex-shrink: 0;
}

/* ==========================================================================
   Sidebar Divider
   ========================================================================== */

.sidebar-divider {
	height: 1px;
	background: var(--gray-700);
	border: none;
	margin: var(--spacing-lg) 0;
}

.sidebar-section--light .sidebar-divider {
	background: var(--gray-200);
}

/* ==========================================================================
   Responsive Behavior
   ========================================================================== */

/* Tablet (768px - 991px) */
@media (max-width: 991px) {
	/* Stack sidebar below content on tablet */
	.sidebar-layout--right,
	.sidebar-layout--left,
	.sidebar-layout--75-25,
	.sidebar-layout--66-33,
	.sidebar-layout--60-40 {
		grid-template-columns: 1fr;
		grid-template-areas:
			"content"
			"sidebar";
	}

	/* Disable sticky behavior on tablet */
	.sidebar-layout__sidebar--sticky {
		position: static;
		max-height: none;
		overflow-y: visible;
	}

	/* Add top spacing when sidebar is stacked */
	.sidebar-layout__sidebar {
		margin-top: var(--spacing-3xl);
	}
}

/* Mobile (< 768px) */
@media (max-width: 767px) {
	/* Reduce gap on mobile */
	.sidebar-layout {
		gap: var(--spacing-lg);
	}

	/* Reduce section padding on mobile */
	.sidebar-section {
		padding: var(--spacing-md);
	}

	/* Reduce CTA padding on mobile */
	.sidebar-cta {
		padding: var(--spacing-lg);
	}

	/* Smaller sidebar spacing */
	.sidebar-layout__sidebar {
		margin-top: var(--spacing-2xl);
	}
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
	/* Hide sidebar on print */
	.sidebar-layout__sidebar {
		display: none;
	}

	/* Make content full width */
	.sidebar-layout--right,
	.sidebar-layout--left {
		grid-template-columns: 1fr;
		grid-template-areas: "content";
	}
}

/* ==========================================================================
   Sidebar Utilities
   ========================================================================== */

/* Hide sidebar on mobile */
.sidebar--hide-mobile {
	display: block;
}

@media (max-width: 767px) {
	.sidebar--hide-mobile {
		display: none;
	}
}

/* Force sidebar order on mobile */
.sidebar--first-mobile {
	order: 0;
}

@media (max-width: 991px) {
	.sidebar--first-mobile {
		order: -1;
	}

	.sidebar-layout {
		display: flex;
		flex-direction: column;
	}
}