/* ============================================================
   Research Publications – Public Stylesheet
   ============================================================ */

/* ── Google Font: Outfit ────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;700&display=swap');

/* ── CSS custom properties ──────────────────────────────────── */
:root {
	--rp-accent:        #2563eb;
	--rp-accent-light:  #dbeafe;
	--rp-accent-hover:  #1d4ed8;
	--rp-card-bg:       #ffffff;
	--rp-border-radius: 12px;
	--rp-shadow:        0 2px 12px rgba(0, 0, 0, 0.07);
	--rp-shadow-hover:  0 6px 24px rgba(0, 0, 0, 0.12);
	--rp-text:          #1e293b;
	--rp-text-muted:    #64748b;
	--rp-filter-bg:     #f8fafc;
	--rp-filter-border: #e2e8f0;
	--rp-tag-method-bg: #f1f5f9;
	--rp-tag-method-clr:#475569;
	--rp-gap:           1.5rem;
	--rp-transition:    0.2s ease;
}

/* ── Wrapper ────────────────────────────────────────────────── */
.rp-wrapper {
	position: relative;
	font-family: 'Outfit', sans-serif;
	font-weight: 300;
	color: var(--rp-text);
}

/* Ensure Outfit 300 cascades to all child text elements */
.rp-wrapper *,
.rp-wrapper input,
.rp-wrapper select,
.rp-wrapper button,
.rp-wrapper textarea {
	font-family: 'Outfit', sans-serif;
}

/* ── Filter Bar ─────────────────────────────────────────────── */
.rp-filters {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem 1rem;
	align-items: flex-end;
	background: var(--rp-filter-bg);
	border: 1px solid var(--rp-filter-border);
	border-radius: var(--rp-border-radius);
	padding: 1.25rem 1.5rem;
	margin-bottom: 1.5rem;
}

.rp-filter-group {
	display: flex;
	flex-direction: column;
	gap: 0.3rem;
	flex: 1 1 180px;
	min-width: 0;
}

.rp-filter-group label {
	font-size: 0.75rem;
	font-weight: 300;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	color: var(--rp-text-muted);
}

.rp-filter-select {
	appearance: none;
	-webkit-appearance: none;
	background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 0.75rem center;
	border: 1px solid var(--rp-filter-border);
	border-radius: 8px;
	padding: 0.5rem 2rem 0.5rem 0.75rem;
	font-family: 'Outfit', sans-serif;
	font-size: 0.9rem;
	font-weight: 300;
	color: var(--rp-text);
	cursor: pointer;
	transition: border-color var(--rp-transition), box-shadow var(--rp-transition);
	width: 100%;
}

.rp-filter-select:focus {
	outline: none;
	border-color: var(--rp-accent);
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.rp-filter-select:hover {
	border-color: var(--rp-accent);
}

/* Reset button */
.rp-reset-group {
	flex: 0 0 auto;
	justify-content: flex-end;
}

.rp-reset-btn {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	background: transparent;
	border: 1.5px solid var(--rp-accent);
	border-radius: 8px;
	color: var(--rp-accent);
	cursor: pointer;
	font-family: 'Outfit', sans-serif;
	font-size: 16px;
	font-weight: 700;
	padding: 0.5rem 1rem;
	transition: background var(--rp-transition), color var(--rp-transition);
	white-space: nowrap;
}

.rp-reset-btn:hover {
	background: var(--rp-accent);
	color: #ffffff !important;
	border-color: var(--rp-accent);
}

.rp-reset-btn:hover .dashicons,
.rp-reset-btn:hover * {
	color: #ffffff !important;
}

.rp-reset-btn .dashicons {
	font-size: 1rem;
	line-height: 1;
	width: 1rem;
	height: 1rem;
}

/* ── Results count ──────────────────────────────────────────── */
.rp-results-count {
	font-size: 0.85rem;
	color: var(--rp-text-muted);
	margin-bottom: 1rem;
	font-style: italic;
}

/* ── Loading overlay ────────────────────────────────────────── */
.rp-loading {
	display: none;
	position: absolute;
	inset: 0;
	background: rgba(255, 255, 255, 0.7);
	z-index: 10;
	align-items: center;
	justify-content: center;
}

.rp-loading.is-visible {
	display: flex;
}

.rp-spinner {
	width: 36px;
	height: 36px;
	border: 3px solid var(--rp-filter-border);
	border-top-color: var(--rp-accent);
	border-radius: 50%;
	animation: rp-spin 0.7s linear infinite;
}

@keyframes rp-spin {
	to { transform: rotate(360deg); }
}

/* ── Grid (single-column full-width rows) ───────────────────── */
.rp-grid {
	display: flex;
	flex-direction: column;
	gap: var(--rp-gap);
}

/* ── Card ───────────────────────────────────────────────────── */
.rp-card {
	display: flex;
	width: 100%;
}

.rp-card-inner {
	background: var(--rp-card-bg);
	border-radius: var(--rp-border-radius);
	box-shadow: var(--rp-shadow);
	padding: 1.25rem 1.75rem;
	display: flex;
	flex-direction: column;
	gap: 0.65rem;
	width: 100%;
	transition: box-shadow var(--rp-transition), transform var(--rp-transition);
}

.rp-card-inner:hover {
	box-shadow: var(--rp-shadow-hover);
	transform: translateY(-1px);
}

/* Year tag pill — neutral/slate tone to distinguish from field blue */
.rp-tag--year {
	background: #e2e8f0;
	color: #334155;
}

/* Citation text — Outfit 300 */
.rp-citation {
	margin: 0;
	font-family: 'Outfit', sans-serif;
	font-size: 0.9rem;
	font-weight: 300;
	line-height: 1.65;
	color: var(--rp-text);
}

.rp-citation em {
	font-style: italic;
}

/* Meta row — link icon sits inline at the start, next to Field group */
.rp-meta {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-start;
	gap: 0.75rem;
}

/* Link icon lives inside .rp-meta now, as first child */
.rp-link-wrap {
	display: flex;
	align-items: center;
	flex-shrink: 0;
}

.rp-tags {
	display: inline-flex;
	flex-direction: column;
	gap: 0.35rem;
}

/* Label above the tag group */
.rp-tags-label {
	font-size: 0.68rem;
	font-weight: 700;
	letter-spacing: 0.07em;
	text-transform: uppercase;
	color: var(--rp-text-muted);
	margin-bottom: 0.1rem;
}

/* Tag group wrapper — groups label + pills together */
.rp-tag-group {
	display: inline-flex;
	flex-direction: column;
	gap: 0.3rem;
}

.rp-tag-pills {
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem;
}

.rp-tag {
	display: inline-block;
	font-size: 0.72rem;
	font-weight: 600;
	padding: 0.2rem 0.6rem;
	border-radius: 20px;
	line-height: 1.4;
	white-space: nowrap;
}

/* Field tag: coloured background */
.rp-tag--field {
	background: var(--rp-accent);
	color: #fff;
}

/* Method tag: subtle grey */
.rp-tag--method {
	background: var(--rp-tag-method-bg);
	color: var(--rp-tag-method-clr);
}

/* Link icon */
.rp-link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	color: var(--rp-accent);
	background: var(--rp-accent-light);
	transition: background var(--rp-transition), color var(--rp-transition);
	text-decoration: none;
	flex-shrink: 0;
}

.rp-link:hover {
	background: var(--rp-accent);
	color: #ffffff !important;
}

.rp-link:hover .rp-link-icon {
	stroke: #ffffff;
}

.rp-link-icon {
	width: 18px;
	height: 18px;
	flex-shrink: 0;
}

/* Screen-reader only helper */
.screen-reader-text {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* No results */
.rp-no-results {
	text-align: center;
	color: var(--rp-text-muted);
	font-size: 1rem;
	padding: 3rem 0;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 580px) {
	.rp-filters {
		flex-direction: column;
		gap: 0.75rem;
	}

	.rp-filter-group {
		flex: 1 1 100%;
	}

	.rp-reset-group {
		align-items: flex-start;
	}
}

/* ── Pagination ─────────────────────────────────────────────── */
.rp-pagination {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: center;
	gap: 0.4rem;
	margin-top: 2rem;
	padding-top: 1.5rem;
	border-top: 1px solid var(--rp-filter-border);
}

/* Shared base for all page buttons */
.rp-page-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 2.4rem;
	height: 2.4rem;
	padding: 0 0.75rem;
	border: 1.5px solid var(--rp-filter-border);
	border-radius: 8px;
	background: #fff;
	color: var(--rp-text);
	font-size: 0.9rem;
	font-weight: 500;
	cursor: pointer;
	transition: background var(--rp-transition), border-color var(--rp-transition), color var(--rp-transition);
	line-height: 1;
	white-space: nowrap;
}

.rp-page-btn:hover:not(:disabled) {
	background: var(--rp-accent-light);
	border-color: var(--rp-accent);
	color: var(--rp-accent);
}

/* Active page number */
.rp-page-btn.rp-page-active {
	background: var(--rp-accent);
	border-color: var(--rp-accent);
	color: #ffffff !important;
	cursor: default;
	font-weight: 700;
}

/* Disabled state (Prev on page 1 / Next on last page) */
.rp-page-btn.rp-page-disabled,
.rp-page-btn:disabled {
	opacity: 0.38;
	cursor: not-allowed;
	pointer-events: none;
}

/* Prev / Next get slightly wider padding for the text */
.rp-page-prev,
.rp-page-next {
	padding: 0 1rem;
	font-weight: 600;
}

/* Ellipsis spacer */
.rp-page-ellipsis {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 2rem;
	color: var(--rp-text-muted);
	font-size: 0.9rem;
	user-select: none;
}

@media (max-width: 480px) {
	.rp-page-prev,
	.rp-page-next {
		padding: 0 0.6rem;
		font-size: 0.8rem;
	}
	.rp-page-btn {
		min-width: 2rem;
		height: 2rem;
		font-size: 0.8rem;
	}
}