/**
 * ECG Digital Library — Frontend Styles
 */

:root {
	--ecg-dl-primary: #1e5a8a;
	--ecg-dl-primary-dark: #16466d;
	--ecg-dl-accent: #2b7fc6;
	--ecg-dl-bg: #f6f8fa;
	--ecg-dl-surface: #ffffff;
	--ecg-dl-border: #e2e8f0;
	--ecg-dl-text: #1a2332;
	--ecg-dl-muted: #64748b;
	--ecg-dl-radius: 10px;
	--ecg-dl-shadow: 0 4px 20px rgba(30, 90, 138, 0.08);
	--ecg-dl-gap: 1.5rem;
	--ecg-dl-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, sans-serif;
}

.ecg-dl-library,
.ecg-dl-single,
.ecg-dl-archive {
	font-family: var(--ecg-dl-font);
	color: var(--ecg-dl-text);
}

/* Header */
.ecg-dl-library__header {
	margin-bottom: 2rem;
	text-align: center;
}

.ecg-dl-library__title {
	font-size: 2rem;
	font-weight: 700;
	color: var(--ecg-dl-primary);
	margin: 0 0 0.5rem;
}

.ecg-dl-library__subtitle {
	color: var(--ecg-dl-muted);
	margin: 0;
}

/* Filters */
.ecg-dl-filters {
	background: var(--ecg-dl-surface);
	border: 1px solid var(--ecg-dl-border);
	border-radius: var(--ecg-dl-radius);
	padding: 1.25rem;
	margin-bottom: var(--ecg-dl-gap);
	box-shadow: var(--ecg-dl-shadow);
}

.ecg-dl-filters__search {
	margin-bottom: 1rem;
}

.ecg-dl-filters__input {
	width: 100%;
	padding: 0.75rem 1rem;
	border: 1px solid var(--ecg-dl-border);
	border-radius: 8px;
	font-size: 1rem;
	transition: border-color 0.2s, box-shadow 0.2s;
}

.ecg-dl-filters__input:focus {
	outline: none;
	border-color: var(--ecg-dl-accent);
	box-shadow: 0 0 0 3px rgba(43, 127, 198, 0.15);
}

.ecg-dl-filters__controls {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
	gap: 1rem;
}

.ecg-dl-filters__group label {
	display: block;
	font-size: 0.8rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--ecg-dl-muted);
	margin-bottom: 0.35rem;
}

.ecg-dl-filters__select {
	width: 100%;
	padding: 0.6rem 0.75rem;
	border: 1px solid var(--ecg-dl-border);
	border-radius: 8px;
	background: var(--ecg-dl-surface);
	font-size: 0.95rem;
}

/* Grid */
.ecg-dl-library__grid {
	display: grid;
	gap: var(--ecg-dl-gap);
}

.ecg-dl-library__grid--cols-1 { grid-template-columns: 1fr; }
.ecg-dl-library__grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
.ecg-dl-library__grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
.ecg-dl-library__grid--cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 992px) {
	.ecg-dl-library__grid--cols-3,
	.ecg-dl-library__grid--cols-4 {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 600px) {
	.ecg-dl-library__grid--cols-2,
	.ecg-dl-library__grid--cols-3,
	.ecg-dl-library__grid--cols-4 {
		grid-template-columns: 1fr;
	}
}

/* Cards */
.ecg-dl-card {
	background: var(--ecg-dl-surface);
	border: 1px solid var(--ecg-dl-border);
	border-radius: var(--ecg-dl-radius);
	overflow: hidden;
	display: flex;
	flex-direction: column;
	transition: transform 0.2s, box-shadow 0.2s;
	box-shadow: var(--ecg-dl-shadow);
}

.ecg-dl-card:hover {
	transform: translateY(-3px);
	box-shadow: 0 8px 30px rgba(30, 90, 138, 0.12);
}

.ecg-dl-card__thumb {
	display: block;
	aspect-ratio: 3 / 4;
	overflow: hidden;
	background: var(--ecg-dl-bg);
}

.ecg-dl-card__thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.ecg-dl-card__thumb--placeholder {
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--ecg-dl-accent);
	font-size: 3rem;
}

.ecg-dl-card__thumb--placeholder-lg {
	min-height: 320px;
	background: var(--ecg-dl-bg);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 4rem;
	color: var(--ecg-dl-accent);
	border-radius: var(--ecg-dl-radius);
}

.ecg-dl-card__body {
	padding: 1.25rem;
	flex: 1;
	display: flex;
	flex-direction: column;
}

.ecg-dl-card__category {
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--ecg-dl-accent);
	margin-bottom: 0.5rem;
}

.ecg-dl-card__title {
	font-size: 1.1rem;
	margin: 0 0 0.5rem;
	line-height: 1.35;
}

.ecg-dl-card__title a {
	color: var(--ecg-dl-text);
	text-decoration: none;
}

.ecg-dl-card__title a:hover {
	color: var(--ecg-dl-primary);
}

.ecg-dl-card__author {
	font-size: 0.85rem;
	color: var(--ecg-dl-muted);
	margin: 0 0 0.5rem;
}

.ecg-dl-card__excerpt {
	font-size: 0.9rem;
	color: var(--ecg-dl-muted);
	margin: 0 0 0.75rem;
	flex: 1;
	line-height: 1.5;
}

.ecg-dl-card__tags {
	list-style: none;
	margin: 0 0 1rem;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem;
}

.ecg-dl-card__tags li {
	font-size: 0.75rem;
	background: var(--ecg-dl-bg);
	color: var(--ecg-dl-muted);
	padding: 0.2rem 0.55rem;
	border-radius: 4px;
}

.ecg-dl-card__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin-top: auto;
}

/* Buttons */
.ecg-dl-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.55rem 1rem;
	font-size: 0.875rem;
	font-weight: 600;
	border-radius: 6px;
	text-decoration: none;
	border: none;
	cursor: pointer;
	transition: background 0.2s, color 0.2s;
}

.ecg-dl-btn--primary {
	background: var(--ecg-dl-primary);
	color: #fff;
}

.ecg-dl-btn--primary:hover {
	background: var(--ecg-dl-primary-dark);
	color: #fff;
}

.ecg-dl-btn--secondary {
	background: var(--ecg-dl-accent);
	color: #fff;
}

.ecg-dl-btn--secondary:hover {
	background: var(--ecg-dl-primary);
	color: #fff;
}

.ecg-dl-btn--ghost {
	background: transparent;
	color: var(--ecg-dl-primary);
	border: 1px solid var(--ecg-dl-border);
}

.ecg-dl-btn--ghost:hover,
.ecg-dl-favorite-btn.is-active {
	background: var(--ecg-dl-bg);
	border-color: var(--ecg-dl-accent);
	color: var(--ecg-dl-primary);
}

.ecg-dl-badge--locked {
	font-size: 0.8rem;
	color: var(--ecg-dl-muted);
	padding: 0.4rem 0.75rem;
	background: var(--ecg-dl-bg);
	border-radius: 4px;
}

/* Pagination */
.ecg-dl-pagination {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 1rem;
	margin-top: 2rem;
}

.ecg-dl-pagination__btn {
	padding: 0.5rem 1.25rem;
	background: var(--ecg-dl-surface);
	border: 1px solid var(--ecg-dl-border);
	border-radius: 6px;
	cursor: pointer;
	font-weight: 600;
	color: var(--ecg-dl-primary);
}

.ecg-dl-pagination__btn:hover:not(:disabled) {
	background: var(--ecg-dl-primary);
	color: #fff;
	border-color: var(--ecg-dl-primary);
}

.ecg-dl-pagination__btn:disabled {
	opacity: 0.4;
	cursor: not-allowed;
}

.ecg-dl-library__empty {
	grid-column: 1 / -1;
	text-align: center;
	padding: 3rem;
	color: var(--ecg-dl-muted);
}

.ecg-dl-library.is-loading .ecg-dl-library__grid {
	opacity: 0.5;
	pointer-events: none;
}

/* Single */
.ecg-dl-single {
	max-width: 1100px;
	margin: 0 auto;
	padding: 2rem 1rem;
}

.ecg-dl-single__header {
	display: grid;
	grid-template-columns: 280px 1fr;
	gap: 2rem;
	margin-bottom: 2rem;
}

@media (max-width: 768px) {
	.ecg-dl-single__header {
		grid-template-columns: 1fr;
	}
}

.ecg-dl-single__category {
	display: inline-block;
	font-size: 0.8rem;
	font-weight: 600;
	text-transform: uppercase;
	color: var(--ecg-dl-accent);
	margin-bottom: 0.5rem;
}

.ecg-dl-single__title {
	font-size: 2rem;
	margin: 0 0 0.5rem;
	color: var(--ecg-dl-primary);
}

.ecg-dl-single__author,
.ecg-dl-single__date {
	color: var(--ecg-dl-muted);
	margin: 0.25rem 0;
}

.ecg-dl-single__stats {
	display: flex;
	gap: 1.5rem;
	margin: 1rem 0;
	font-size: 0.9rem;
	color: var(--ecg-dl-muted);
}

.ecg-dl-single__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	margin-bottom: 2rem;
}

.ecg-dl-single__content {
	display: grid;
	grid-template-columns: 1fr 300px;
	gap: 2rem;
}

@media (max-width: 900px) {
	.ecg-dl-single__content {
		grid-template-columns: 1fr;
	}
}

.ecg-dl-meta-list__row {
	display: grid;
	grid-template-columns: 120px 1fr;
	gap: 0.5rem;
	padding: 0.5rem 0;
	border-bottom: 1px solid var(--ecg-dl-border);
}

.ecg-dl-meta-list dt {
	font-weight: 600;
	font-size: 0.85rem;
	color: var(--ecg-dl-muted);
}

.ecg-dl-meta-list dd {
	margin: 0;
}

.ecg-dl-single__meta {
	background: var(--ecg-dl-bg);
	padding: 1.5rem;
	border-radius: var(--ecg-dl-radius);
}

/* PDF Viewer */
.ecg-dl-pdf-viewer {
	margin-top: 2rem;
	border: 1px solid var(--ecg-dl-border);
	border-radius: var(--ecg-dl-radius);
	overflow: hidden;
}

.ecg-dl-pdf-viewer iframe {
	width: 100%;
	min-height: 700px;
	border: none;
	display: block;
}

/* Share */
.ecg-dl-share {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	margin-top: 1rem;
}

.ecg-dl-share__link {
	color: var(--ecg-dl-accent);
	text-decoration: none;
	font-size: 0.9rem;
	font-weight: 600;
}

.ecg-dl-share__link:hover {
	text-decoration: underline;
}

/* Related */
.ecg-dl-related {
	margin-top: 3rem;
	padding-top: 2rem;
	border-top: 1px solid var(--ecg-dl-border);
}

.ecg-dl-related__title {
	font-size: 1.5rem;
	color: var(--ecg-dl-primary);
	margin-bottom: 1.5rem;
}

.ecg-dl-notice {
	padding: 1.25rem;
	border-radius: var(--ecg-dl-radius);
	margin-bottom: 1.5rem;
}

.ecg-dl-notice--warning {
	background: #fff8e6;
	border: 1px solid #f0d78c;
}

/* Archive */
.ecg-dl-archive {
	max-width: 1200px;
	margin: 0 auto;
	padding: 2rem 1rem;
}

.ecg-dl-archive__header {
	text-align: center;
	margin-bottom: 2rem;
}