/**
 * Scientific archive page (SAEE2/22.html design)
 * Scoped under .sa-page — brand colors #005B9A / #C9A34E
 */

.sa-page {
	--sa-primary: #005B9A;
	--sa-primary-dark: #004578;
	--sa-gold: #C9A34E;
	--sa-gold-light: #f3e5ab;
	--sa-bg: #f4f7fc;
	--sa-white: #ffffff;
	--sa-text: #0b1a33;
	--sa-muted: #5a6d86;
	--sa-border: #e2e8f0;
	--sa-shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.06);
	--sa-shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
	--sa-radius: 16px;
	--sa-transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
	background: var(--sa-bg);
	color: var(--sa-text);
	line-height: 1.8;
	padding-bottom: 40px;
}

.sa-page .container {
	max-width: 1340px;
	margin: 0 auto;
	padding: 0 20px;
}

.sa-page a {
	text-decoration: none;
	color: var(--sa-primary);
}

.sa-page a:hover {
	color: var(--sa-gold);
}

.sa-btn {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 8px 20px;
	border-radius: 40px;
	font-weight: 700;
	font-size: 0.9rem;
	border: none;
	cursor: pointer;
	transition: all var(--sa-transition);
	font-family: inherit;
	line-height: 1.4;
}

.sa-btn-primary {
	background: var(--sa-primary);
	color: #fff !important;
}

.sa-btn-primary:hover {
	background: var(--sa-primary-dark);
	transform: translateY(-2px);
	box-shadow: 0 8px 25px rgba(0, 91, 154, 0.3);
	color: #fff !important;
}

.sa-btn-outline {
	background: transparent;
	border: 2px solid var(--sa-border);
	color: var(--sa-text) !important;
}

.sa-btn-outline:hover {
	background: var(--sa-primary);
	color: #fff !important;
	border-color: var(--sa-primary);
}

.sa-btn-sm {
	padding: 4px 14px;
	font-size: 0.75rem;
	border-radius: 30px;
}

.sa-form-control {
	padding: 12px 20px;
	border-radius: 60px;
	border: 2px solid var(--sa-border);
	background: var(--sa-white);
	font-family: inherit;
	font-size: 1rem;
	width: 100%;
	transition: border 0.3s;
	color: var(--sa-text);
}

.sa-form-control:focus {
	outline: none;
	border-color: var(--sa-gold);
	box-shadow: 0 0 0 4px rgba(201, 163, 78, 0.15);
}

.sa-form-select {
	padding: 10px 14px;
	border-radius: 10px;
	border: 1px solid var(--sa-border);
	background: var(--sa-white);
	font-family: inherit;
	font-size: 0.9rem;
	width: 100%;
	color: var(--sa-text);
}

/* Breadcrumb */
.sa-breadcrumb {
	background: var(--sa-white);
	padding: 12px 0;
	border-bottom: 1px solid var(--sa-border);
	font-size: 0.9rem;
}

.sa-breadcrumb ol {
	list-style: none;
	display: flex;
	gap: 8px;
	margin: 0;
	padding: 0;
	flex-wrap: wrap;
}

.sa-breadcrumb ol li::after {
	content: '›';
	margin-right: 8px;
	color: var(--sa-muted);
}

.sa-breadcrumb ol li:last-child::after {
	display: none;
}

.sa-breadcrumb a {
	color: var(--sa-muted);
}

.sa-breadcrumb a:hover {
	color: var(--sa-primary);
}

/* Hero */
.sa-hero {
	background: var(--sa-primary);
	color: #fff;
	padding: 40px 0 50px;
	border-radius: var(--sa-radius);
	margin: 20px auto 30px;
	text-align: center;
	max-width: 1340px;
	width: calc(100% - 40px);
}

.sa-hero h1 {
	font-size: 2.6rem;
	font-weight: 900;
	margin: 0;
	color: #fff;
}

.sa-hero p {
	font-size: 1.1rem;
	opacity: 0.9;
	max-width: 700px;
	margin: 10px auto 0;
	color: #fff;
}

.sa-hero-stats {
	display: flex;
	justify-content: center;
	gap: 40px;
	flex-wrap: wrap;
	margin-top: 25px;
}

.sa-stat-number {
	font-size: 2rem;
	font-weight: 900;
	display: block;
	color: var(--sa-gold);
}

.sa-stat-label {
	font-size: 0.9rem;
	opacity: 0.85;
}

/* Search & filters */
.sa-search-section {
	background: var(--sa-white);
	padding: 25px 0;
	border-radius: var(--sa-radius);
	box-shadow: var(--sa-shadow-sm);
	margin: 0 auto 30px;
	max-width: 1340px;
	width: calc(100% - 40px);
}

.sa-search-input-group {
	display: flex;
	gap: 12px;
}

.sa-search-input-group .sa-form-control {
	flex: 1;
}

.sa-filter-bar {
	background: var(--sa-bg);
	padding: 20px;
	border-radius: 12px;
	margin-top: 15px;
}

.sa-filter-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
	gap: 15px;
	align-items: end;
}

.sa-filter-group {
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.sa-filter-group label {
	font-size: 0.8rem;
	font-weight: 600;
	color: var(--sa-muted);
}

.sa-filter-actions {
	display: flex;
	gap: 10px;
	align-items: center;
	flex-wrap: wrap;
}

.sa-filter-actions .sa-btn {
	flex: 1;
	justify-content: center;
}

.sa-active-filters {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: 15px;
	padding-top: 15px;
	border-top: 1px solid var(--sa-border);
	align-items: center;
}

.sa-filter-chip {
	background: var(--sa-primary);
	color: #fff;
	padding: 4px 14px;
	border-radius: 30px;
	font-size: 0.8rem;
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

/* Results */
.sa-results-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: 15px;
	margin: 25px 0 20px;
}

.sa-results-count strong {
	color: var(--sa-primary);
	font-size: 1.2rem;
}

.sa-results-controls {
	display: flex;
	gap: 15px;
	align-items: center;
	flex-wrap: wrap;
}

.sa-per-page {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 0.9rem;
}

.sa-per-page .sa-form-select {
	width: auto;
	padding: 6px 12px;
}

.sa-view-switcher .sa-btn {
	padding: 6px 12px;
	border: 1px solid var(--sa-border);
	background: var(--sa-white);
	border-radius: 6px;
	color: var(--sa-text) !important;
}

.sa-view-switcher .sa-btn.active {
	background: var(--sa-primary);
	color: #fff !important;
	border-color: var(--sa-primary);
}

.sa-articles-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
	gap: 25px;
}

.sa-articles-grid.is-list {
	grid-template-columns: 1fr;
}

.sa-articles-grid.is-compact {
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.sa-article-card {
	background: var(--sa-white);
	border-radius: var(--sa-radius);
	padding: 22px 25px;
	border: 1px solid var(--sa-border);
	box-shadow: var(--sa-shadow-sm);
	transition: all var(--sa-transition);
}

.sa-article-card:hover {
	transform: translateY(-6px);
	box-shadow: var(--sa-shadow-md);
}

.sa-card-badge {
	display: flex;
	justify-content: space-between;
	margin-bottom: 10px;
	flex-wrap: wrap;
	gap: 5px;
}

.sa-badge-type {
	font-size: 0.65rem;
	background: var(--sa-gold);
	color: #fff;
	padding: 2px 14px;
	border-radius: 30px;
	font-weight: 700;
}

.sa-badge-doi {
	font-size: 0.65rem;
	color: var(--sa-muted);
}

.sa-article-title {
	font-size: 1.1rem;
	font-weight: 700;
	margin: 0 0 5px;
	line-height: 1.5;
}

.sa-article-title a {
	color: var(--sa-text);
}

.sa-article-title a:hover {
	color: var(--sa-primary);
}

.sa-article-authors {
	font-size: 0.9rem;
	color: var(--sa-muted);
	margin-bottom: 8px;
}

.sa-article-meta {
	display: flex;
	gap: 15px;
	font-size: 0.75rem;
	color: var(--sa-muted);
	margin-bottom: 12px;
	flex-wrap: wrap;
}

.sa-article-meta i {
	color: var(--sa-gold);
	width: 16px;
}

.sa-article-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
}

.sa-empty {
	text-align: center;
	padding: 40px 20px;
	color: var(--sa-muted);
	background: var(--sa-white);
	border-radius: var(--sa-radius);
}

/* Sidebar */
.sa-sidebar-section {
	margin: 40px 0;
}

.sa-sidebar-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
	gap: 25px;
}

.sa-sidebar-box {
	background: var(--sa-white);
	border-radius: var(--sa-radius);
	padding: 20px 24px;
	border: 1px solid var(--sa-border);
	box-shadow: var(--sa-shadow-sm);
}

.sa-sidebar-box h3 {
	font-size: 1.1rem;
	border-bottom: 2px solid var(--sa-border);
	padding-bottom: 10px;
	margin: 0 0 15px;
	display: flex;
	align-items: center;
	gap: 10px;
}

.sa-sidebar-box h3 i {
	color: var(--sa-gold);
}

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

.sa-sidebar-list li {
	padding: 10px 0;
	border-bottom: 1px solid var(--sa-border);
}

.sa-sidebar-list li:last-child {
	border: none;
}

.sa-sidebar-list li a {
	color: var(--sa-text);
	font-weight: 600;
	display: block;
}

.sa-sidebar-list li a:hover {
	color: var(--sa-primary);
}

.sa-meta-info,
.sa-authors {
	font-size: 0.75rem;
	color: var(--sa-muted);
	display: block;
}

.sa-authors {
	font-size: 0.8rem;
}

.sa-empty-item {
	color: var(--sa-muted);
	font-size: 0.9rem;
}

/* Timeline */
.sa-timeline-section {
	background: var(--sa-bg);
	padding: 40px 0;
	border-radius: var(--sa-radius);
	margin: 30px auto;
	max-width: 1340px;
	width: calc(100% - 40px);
}

.sa-section-title {
	font-size: 2rem;
	font-weight: 800;
	position: relative;
	margin: 0 0 25px;
}

.sa-section-title::after {
	content: '';
	display: block;
	width: 60px;
	height: 4px;
	background: var(--sa-gold);
	margin-top: 8px;
	border-radius: 4px;
}

.sa-timeline-year {
	margin-bottom: 30px;
}

.sa-year-label {
	font-size: 1.4rem;
	font-weight: 800;
	border-right: 4px solid var(--sa-gold);
	padding-right: 15px;
	margin: 0 0 15px;
	color: var(--sa-primary);
}

.sa-timeline-issues {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	gap: 15px;
}

.sa-timeline-issue {
	display: flex;
	gap: 12px;
	align-items: center;
	background: var(--sa-white);
	padding: 12px 16px;
	border-radius: 12px;
	border: 1px solid var(--sa-border);
	transition: all var(--sa-transition);
	color: inherit;
}

.sa-timeline-issue:hover {
	transform: translateX(-5px);
	box-shadow: var(--sa-shadow-sm);
	color: inherit;
}

.sa-issue-cover-mini {
	width: 50px;
	height: 60px;
	background: var(--sa-bg);
	border-radius: 6px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--sa-muted);
	font-size: 1.5rem;
	flex-shrink: 0;
	overflow: hidden;
}

.sa-issue-cover-mini img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.sa-issue-info-mini {
	font-size: 0.9rem;
	color: var(--sa-text);
	font-weight: 700;
}

.sa-issue-date,
.sa-issue-count {
	font-size: 0.75rem;
	color: var(--sa-muted);
	display: block;
	font-weight: 400;
}

/* Authors */
.sa-authors-section {
	padding: 30px 0;
}

.sa-authors-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
	gap: 20px;
	margin-top: 20px;
}

.sa-author-card {
	text-align: center;
	background: var(--sa-white);
	padding: 20px 15px;
	border-radius: var(--sa-radius);
	border: 1px solid var(--sa-border);
	transition: all var(--sa-transition);
}

.sa-author-card:hover {
	transform: translateY(-5px);
	box-shadow: var(--sa-shadow-sm);
}

.sa-avatar {
	width: 60px;
	height: 60px;
	border-radius: 50%;
	background: var(--sa-primary);
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 1.5rem;
	font-weight: 900;
	margin: 0 auto 10px;
}

.sa-author-card h3 {
	font-size: 0.95rem;
	margin: 0;
}

.sa-affil {
	font-size: 0.75rem;
	color: var(--sa-muted);
	margin-top: 4px;
}

.sa-author-count {
	font-size: 0.8rem;
	color: var(--sa-gold);
	margin-top: 5px;
}

/* Modal */
.sa-modal-overlay {
	display: none;
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, 0.5);
	z-index: 9999;
	justify-content: center;
	align-items: center;
	padding: 20px;
}

.sa-modal-overlay.is-open {
	display: flex;
}

.sa-modal-content {
	background: var(--sa-white);
	border-radius: var(--sa-radius);
	max-width: 700px;
	width: 100%;
	max-height: 80vh;
	overflow-y: auto;
	padding: 30px 35px;
	position: relative;
	box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.sa-modal-close {
	position: absolute;
	top: 15px;
	left: 20px;
	background: none;
	border: none;
	font-size: 1.5rem;
	cursor: pointer;
	color: var(--sa-muted);
}

.sa-modal-abstract {
	margin: 15px 0;
	padding: 15px;
	background: var(--sa-bg);
	border-radius: 8px;
	line-height: 1.8;
}

.sa-modal-keywords {
	font-size: 0.9rem;
	color: var(--sa-muted);
}

.sa-modal-read {
	margin-top: 15px;
}

/* Pagination */
.sa-pagination-wrapper {
	display: flex;
	justify-content: center;
	margin: 30px 0 20px;
}

.sa-pagination {
	display: flex;
	gap: 5px;
	list-style: none;
	padding: 0;
	margin: 0;
	flex-wrap: wrap;
	justify-content: center;
}

.sa-pagination li a,
.sa-pagination li span {
	display: block;
	padding: 8px 16px;
	border-radius: 8px;
	border: 1px solid var(--sa-border);
	color: var(--sa-text);
	transition: all 0.2s;
	background: var(--sa-white);
}

.sa-pagination li a:hover {
	background: var(--sa-primary);
	color: #fff;
	border-color: var(--sa-primary);
}

.sa-pagination li.active span {
	background: var(--sa-primary);
	color: #fff;
	border-color: var(--sa-primary);
}

.sa-pagination li.disabled span {
	opacity: 0.5;
	cursor: not-allowed;
}

@media (max-width: 768px) {
	.sa-hero h1 {
		font-size: 1.8rem;
	}

	.sa-hero-stats {
		gap: 20px;
	}

	.sa-filter-grid {
		grid-template-columns: 1fr;
	}

	.sa-search-input-group {
		flex-direction: column;
	}

	.sa-articles-grid {
		grid-template-columns: 1fr;
	}

	.sa-results-header {
		flex-direction: column;
		align-items: stretch;
	}

	.sa-filter-actions {
		flex-direction: column;
	}

	.sa-filter-actions .sa-btn {
		width: 100%;
	}

	.sa-sidebar-grid {
		grid-template-columns: 1fr;
	}

	.sa-timeline-issues {
		grid-template-columns: 1fr;
	}

	.sa-authors-grid {
		grid-template-columns: 1fr 1fr;
	}
}

@media (max-width: 480px) {
	.sa-hero h1 {
		font-size: 1.4rem;
	}

	.sa-stat-number {
		font-size: 1.2rem;
	}

	.sa-authors-grid {
		grid-template-columns: 1fr;
	}
}