/* ============================================================
   TFE INDIVIDUAL PAGE (tfe.php)
   Root class: .tfe-main
   ============================================================ */

.tfe-main {
	flex: 1;
	min-height: 0;
	overflow: hidden;
	padding: 0 var(--space-m) 0 var(--space-m);
}

/* Stacked article layout — fills main height */
.tfe-layout {
	display: flex;
	flex-direction: column;
	gap: var(--space-xl);
	width: 100%;
	height: 100%;
	min-height: 0;
}

/* Row 1: Author above Title (kept for backward compat, no longer used) */
.tfe-header-row {
	display: flex;
	flex-direction: column;
	gap: var(--space-3xs);
}

/* Two-column layout: left 40vw (info), right fills remaining (files) */
.tfe-content-row {
	display: grid;
	grid-template-columns: 40vw 1fr;
	gap: var(--space-xl);
	flex: 1;
	min-height: 0;
}
.tfe-left-column,
.tfe-right-column {
	display: flex;
	flex-direction: column;
	overflow-y: auto;
	min-width: 0;
	padding-top: var(--space-l);
	padding-bottom: var(--space-xl);
}

/* Left column: stacks author, title, meta, synopsis — scrolls independently */
.tfe-left-column {
	gap: var(--space-m);
	/* to space the edge of the text and the scrollbar */
	padding-right: 0.5ch;
}

/* Files container inside right column */
.tfe-files {
	display: flex;
	flex-direction: column;
	gap: var(--space-m);
}

.tfe-file-item {
	width: 100%;
	min-width: 0;
	overflow: hidden;
	border-radius: var(--radius);
}

.tfe-file-item:has(.pdf-embed-wrapper) {
	overflow: visible;
}

.tfe-file-item img {
	width: 100%;
	height: auto;
	display: block;
	border-radius: var(--radius);
	user-select: none;
	-webkit-user-drag: none;
}

.tfe-file-item embed,
.tfe-file-item video {
	width: 100%;
	max-width: 100%;
	display: block;
	border: none;
}

.tfe-file-item video {
	max-height: 500px;
}

.tfe-file-item embed,
.tfe-file-iframe {
	width: 100%;
	max-width: 100%;
	height: clamp(300px, 80vh, 700px);
	display: block;
	border: none;
}

.tfe-file-item figcaption {
	font-size: var(--step--2);
	color: var(--text-secondary);
	margin: var(--space-3xs) 0 0;
	font-style: italic;
}

/* Synopsis column wrapper (context note + synopsis) */
.tfe-synopsis-column {
	display: flex;
	flex-direction: column;
	gap: var(--space-xs);
}

/* Contextual note above synopsis */
.tfe-context-note {
	font-style: italic;
	font-size: var(--step--1);
	line-height: 1.6;
	color: var(--text-secondary);
	margin: 0;
	padding: var(--space-xs) var(--space-s);
	background: color-mix(in srgb, var(--accent-primary) 10%, var(--bg-primary));
	border-radius: var(--radius);
}

.tfe-synopsis-empty {
	/* placeholder to maintain grid column */
}

/* Author (p) — inline with title */
.tfe-author {
	font-family: var(--font-display);
	font-size: var(--step-1);
	font-weight: 400;
	color: var(--text-primary);
	margin: 0;
	line-height: 1.3;
}

/* Title (h1) — inherits global scale from base.css */
.tfe-title {
	margin: 0;
}

/* Metadata block */
.tfe-meta {
	display: flex;
	flex-direction: column;
	gap: var(--space-3xs);
	font-size: var(--step--1);
	line-height: 1.4;
	margin: 0;
}

/* Each metadata line */
.tfe-meta-item {
	margin: 0;
	font-weight: 700;
}

.tfe-meta-label {
	font-weight: 300;
}

.tfe-meta-item a {
	color: inherit;
	font-weight: 700;
	text-decoration: none;
}

.tfe-meta-item a:hover {
	color: var(--accent-primary);
}

/* Note field: align label to top, value in italics */
.tfe-meta-item.tfe-meta-note {
	align-items: start;
}

.tfe-note-value {
	font-style: italic;
}

/* Synopsis paragraph */
.tfe-synopsis-text {
	font-size: var(--step--1);
	line-height: 1.7;
	color: var(--text-primary);
	margin: 0;
}

/* Audio player */
.tfe-audio {
	width: 100%;
	margin: 0;
	display: block;
}

/* "Not available" and "no files" notices */
.tfe-restricted,
.tfe-no-files {
	font-size: var(--step--1);
	color: var(--text-secondary);
	font-style: italic;
	padding: var(--space-s) 0;
	margin: 0;
}

/* ============================================================
   RESTRICTED ACCESS UI
   ============================================================ */
.tfe-restricted-access {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: var(--space-m);
	display: flex;
	flex-direction: column;
	gap: var(--space-m);
}

.tfe-restricted-message {
	font-size: var(--step--1);
	color: var(--text-secondary);
	line-height: 1.6;
	margin: 0;
}

.tfe-restricted-message strong {
	color: var(--text-primary);
	display: block;
	margin-bottom: var(--space-3xs);
	font-size: var(--step-0);
}

.tfe-access-request-form {
	display: flex;
	flex-direction: column;
	gap: var(--space-s);
}

.tfe-access-request-form .form-group {
	display: flex;
	flex-direction: column;
	gap: var(--space-3xs);
}

.tfe-access-request-form label {
	font-size: var(--step--1);
	font-weight: 400;
	color: var(--text-primary);
}

.tfe-access-request-form input[type="email"],
.tfe-access-request-form textarea {
	padding: var(--space-2xs) var(--space-3xs);
}

.tfe-btn-request-access {
	/* deprecated alias for .btn--primary; kept for backward-compat */
	margin-top: var(--space-3xs);
}

.tfe-btn-request-access:hover:not(:disabled) {
	/* handled by .btn--primary */
}

.tfe-btn-request-access:disabled {
	opacity: 0.6;
	cursor: not-allowed;
}

.tfe-access-message {
	font-size: var(--step--1);
	padding: var(--space-2xs);
	border-radius: var(--radius);
	margin-top: var(--space-3xs);
}

.tfe-access-success {
	background: #f0fff4;
	border: 1px solid #48bb78;
	color: #22543d;
}

.tfe-access-error {
	background: #fff5f5;
	border: 1px solid #fc8181;
	color: #742a2a;
}

.tfe-access-request-form input.input-error {
	border-color: #fc8181;
	outline-color: #fc8181;
}

/* ============================================================
   PDF.js IN-PAGE VIEWER (pdf-viewer.js)
   ============================================================ */

/*── Base wrapper ───────────────────────────── */

.pdf-embed-wrapper {
	position: relative;
	width: 100%;
	height: auto;
	display: flex;
	flex-direction: column;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	outline: none;
	transition: height 0.35s ease, border-color 0.35s ease;
}

/* ── Collapsed state: thumbnail tile ────────── */

.pdf-collapsed {
	cursor: pointer;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	position: relative;
	min-height: 200px;
	max-height: 350px;
}

.pdf-thumbnail {
	display: block;
	max-width: 100%;
	max-height: 100%;
	object-fit: contain;
}

/* ── Overlay veil + enter button ────────────── */

.pdf-overlay {
	position: absolute;
	inset: 0;
	z-index: 1;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgb(0 0 0 / 0.15);
	backdrop-filter: blur(4px) saturate(0.6);
	transition: background 0.2s;
}

.pdf-overlay:hover {
	background: rgb(0 0 0 / 0.08);
}

/* Document type pill — top-left of the overlay */

.pdf-overlay-badge {
	position: absolute;
	top: var(--space-xs);
	left: var(--space-xs);
	z-index: 2;
	display: inline-block;
	padding: 0.15em 0.6em;
	font-size: var(--step--2);
	font-weight: 500;
	line-height: 1.4;
	color: color-mix(in srgb, var(--accent-primary) 90%, #000);
	background: color-mix(in srgb, var(--accent-primary) 12%, transparent);
	border: 1px solid color-mix(in srgb, var(--accent-primary) 25%, transparent);
	border-radius: var(--radius);
}

.pdf-enter-btn {
	display: inline-flex;
	align-items: center;
	gap: var(--space-2xs);
	padding: var(--space-xs) var(--space-m);
	background: var(--accent-primary);
	color: #fff;
	border: none;
	border-radius: var(--radius);
	font-size: var(--step-0);
	font-weight: 500;
	cursor: pointer;
	box-shadow: 0 2px 8px rgb(0 0 0 / 0.2);
	transition: transform 0.15s, box-shadow 0.15s;
}

.pdf-enter-btn:hover {
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgb(0 0 0 / 0.25);
}

/* ── Expanded state: wrapper becomes scroll panel ── */

.pdf-expanded {
	/* Fill viewport minus the column's vertical padding */
	max-height: calc(100vh - var(--space-xl) * 2);
	height: clamp(400px, 80vh, calc(100vh - var(--space-xl) * 2));
	overflow-y: auto;
	border: 2px solid var(--accent-primary);
	display: block;
}

/* ── Toolbar ────────────────────────────────── */

.pdf-toolbar {
	position: sticky;
	top: 0;
	z-index: 2;
	display: flex;
	align-items: center;
	gap: var(--space-3xs);
	padding: var(--space-2xs) var(--space-xs);
	background: var(--bg-primary);
	border-bottom: 1px solid var(--border);
	border-radius: var(--radius);
	flex-shrink: 0;
	font-size: var(--step--1);
	user-select: none;
}

.pdf-toolbar-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2em;
	height: 2em;
	padding: 0;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: var(--surface);
	color: var(--text-primary);
	cursor: pointer;
	font-size: inherit;
	line-height: 1;
	transition: background 0.15s;
}

.pdf-toolbar-btn:hover {
	background: color-mix(in srgb, var(--accent-primary) 15%, var(--surface));
}

.pdf-toolbar-close {
	margin-right: var(--space-xs);
}

.pdf-toolbar-label {
	min-width: 4.5em;
	text-align: center;
	color: var(--text-secondary);
	font-variant-numeric: tabular-nums;
}

.pdf-toolbar-scale {
	min-width: 3em;
}

/* ── Scroll container ────────────────────────── */

.pdf-canvas {
	display: block;
	width: 100%;
	height: auto;
	box-shadow: 0 1px 4px rgb(0 0 0 / 0.12);
	background: #fff;
	flex-shrink: 0;
}

.pdf-canvas:first-of-type {
	margin-top: var(--space-xs);
}

.pdf-canvas:last-of-type {
	margin-bottom: var(--space-xs);
}

.pdf-canvas + .pdf-canvas {
	margin-top: var(--space-2xs);
}

/* Responsive */
@media (max-width: 900px) {
	.tfe-main {
		overflow-y: auto;
	}

	.tfe-layout {
		height: auto;
		min-height: auto;
	}

	.tfe-content-row {
		grid-template-columns: 1fr;
		flex: none;
	}

	.tfe-left-column,
	.tfe-right-column {
		overflow-y: visible;
	}

	.tfe-title {
		font-size: var(--step-2);
	}
}

@media (max-width: 600px) {
	.tfe-main {
		padding: var(--space-m) var(--space-s) var(--space-l);
	}

	.tfe-title {
		font-size: var(--step-1);
	}
}