/**
 * Stundenplan Viewer – Frontend-Styles.
 * CSS-Variablen erlauben einfaches Überschreiben über Theme/Builder.
 */

.spv-viewer {
	--spv-bg: #ffffff;
	--spv-toolbar-bg: #861020;          /* Markenrot */
	--spv-toolbar-fg: #ffffff;
	--spv-btn-hover: rgba( 255, 255, 255, 0.15 );
	--spv-border: #e5e7eb;
	--spv-radius: 8px;

	--spv-sidebar-bg: #f3f4f6;
	--spv-sidebar-w: 260px;
	--spv-tab-bg: #ececec;
	--spv-tab-fg: #374151;
	--spv-tab-active-bg: #2f2f2f;       /* aktiver Tab: dunkel (wie im Beispiel) */
	--spv-tab-active-fg: #ffffff;

	/* Button-Tab (Typ "Button"): Inhalt = nur ein Hyperlink, frei anpassbar */
	--spv-link-pane-bg: #ffffff;
	--spv-link-btn-bg: #861020;         /* Markenrot */
	--spv-link-btn-fg: #ffffff;
	--spv-link-btn-hover-bg: #6d0d1a;
	--spv-link-btn-radius: 8px;
	--spv-link-btn-padding: 16px 32px;
	--spv-link-btn-font-size: 17px;

	--spv-warn-gap: 12px;

	display: flex;
	flex-direction: column;
	width: var( --spv-width, 100% );
	max-width: 100%;
	min-width: 0;
	box-sizing: border-box;
	font-family: inherit;
}

/* Umrandeter Rahmen um Sidebar + Inhalt (getrennt von der Warn-Leiste). */
.spv-frame {
	box-sizing: border-box;
	border: 1px solid var( --spv-border );
	border-radius: var( --spv-radius );
	overflow: hidden;
	background: var( --spv-bg );
	box-shadow: 0 1px 3px rgba( 0, 0, 0, 0.08 );
}

/* Warn-Leisten (oben, gestapelt in Tab-Reihenfolge). Abstand über den Container. */
.spv-warnings {
	display: flex;
	flex-direction: column;
	gap: 8px;
	margin-bottom: var( --spv-warn-gap, 12px );
}

.spv-warning {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 12px 18px;
	border-radius: var( --spv-radius );
	background: var( --spv-warn-bg, #2b7fd6 );
	color: #ffffff;
	font-size: 15px;
	font-weight: 600;
	line-height: 1.35;
}
.spv-warning[hidden] { display: none !important; }
.spv-warning-icon {
	flex: 0 0 auto;
	width: 22px;
	height: 22px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 2px solid currentColor;
	border-radius: 50%;
	font-family: Georgia, "Times New Roman", serif;
	font-style: italic;
	font-weight: 700;
	font-size: 14px;
	line-height: 1;
}
.spv-warning-text { min-width: 0; }

/* Sidebar + Inhalt nebeneinander. */
.spv-body {
	display: flex;
	align-items: stretch;
	flex: 1 1 auto;
	min-width: 0;
	min-height: 0;
}

/* ---------- Sidebar mit Tabs ---------- */
.spv-sidebar {
	flex: 0 0 var( --spv-sidebar-w );
	max-width: var( --spv-sidebar-w );
	box-sizing: border-box;
	background: var( --spv-sidebar-bg );
	border-right: 1px solid var( --spv-border );
	padding: 10px;
	overflow-y: auto;
}

.spv-tabs {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.spv-tabs li {
	margin: 0;
	padding: 0;
}

.spv-tab {
	display: block;
	width: 100%;
	text-align: left;
	box-sizing: border-box;
	padding: 12px 14px;
	border: 1px solid var( --spv-border );
	border-radius: 8px;
	background: var( --spv-tab-bg );
	color: var( --spv-tab-fg );
	font-size: 15px;
	font-weight: 500;
	line-height: 1.3;
	cursor: pointer;
	transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.spv-tab:hover,
.spv-tab:focus-visible {
	background: #e2e2e2;
	outline: none;
}

.spv-tab.is-active {
	background: var( --spv-tab-active-bg );
	color: var( --spv-tab-active-fg );
	border-color: var( --spv-tab-active-bg );
	box-shadow: 0 1px 4px rgba( 0, 0, 0, 0.18 );
}

/* ---------- Hauptbereich ---------- */
.spv-main {
	flex: 1 1 auto;
	min-width: 0;
	display: flex;
	flex-direction: column;
}

/* ---------- Panes: PDF vs. Button ---------- */
.spv-pdf-pane {
	display: flex;
	flex-direction: column;
	flex: 1 1 auto;
	min-width: 0;
}

.spv-pdf-pane[hidden],
.spv-link-pane[hidden] {
	display: none !important;
}

/* Button-Tab: Inhalt = nur ein zentrierter Hyperlink (frei per CSS anpassbar) */
.spv-link-pane {
	display: flex;
	align-items: flex-start;
	justify-content: flex-start;
	flex: 1 1 auto;
	min-width: 0;
	box-sizing: border-box;
	padding: 40px 24px;
	min-height: var( --spv-height, 800px );
	max-height: 90vh;
	background: var( --spv-link-pane-bg, #ffffff );
}

.spv-link-button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	max-width: 100%;
	padding: var( --spv-link-btn-padding, 16px 32px );
	border: none;
	border-radius: var( --spv-link-btn-radius, 8px );
	background: var( --spv-link-btn-bg, #861020 );
	color: var( --spv-link-btn-fg, #ffffff );
	font-size: var( --spv-link-btn-font-size, 17px );
	font-weight: 600;
	line-height: 1.2;
	text-align: center;
	text-decoration: none;
	cursor: pointer;
	transition: background 0.15s ease, transform 0.05s ease;
	-webkit-tap-highlight-color: transparent;
}

.spv-link-button:hover,
.spv-link-button:focus-visible {
	background: var( --spv-link-btn-hover-bg, #6d0d1a );
	color: var( --spv-link-btn-fg, #ffffff );
	outline: none;
}

.spv-link-button:active {
	transform: translateY( 1px );
}

/* ---------- Toolbar ---------- */
.spv-toolbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	padding: 8px 12px;
	background: var( --spv-toolbar-bg );
	color: var( --spv-toolbar-fg );
	flex-wrap: wrap;
}

.spv-toolbar-group {
	display: flex;
	align-items: center;
	gap: 6px;
	flex-wrap: wrap;
}

.spv-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 38px;
	height: 38px;
	padding: 0 10px;
	border: none;
	border-radius: 6px;
	background: transparent;
	color: inherit;
	font-size: 18px;
	line-height: 1;
	cursor: pointer;
	text-decoration: none;
	transition: background 0.15s ease;
	-webkit-tap-highlight-color: transparent;
}

.spv-btn:hover,
.spv-btn:focus-visible {
	background: var( --spv-btn-hover );
	outline: none;
}

.spv-pageinfo {
	font-size: 14px;
	min-width: 64px;
	text-align: center;
	white-space: nowrap;
}

.spv-btn-download {
	gap: 8px;
	padding: 0 14px;
	font-size: 14px;
	font-weight: 600;
	background: rgba( 255, 255, 255, 0.16 );
	white-space: nowrap;
}

.spv-btn-download:hover,
.spv-btn-download:focus-visible {
	background: rgba( 255, 255, 255, 0.30 );
}

.spv-dl-icon { font-size: 18px; line-height: 1; }
.spv-dl-label { line-height: 1; }

/* ---------- Canvas / PDF-Fläche ---------- */
.spv-canvas-wrap {
	position: relative;
	width: 100%;
	max-width: 100%;
	min-width: 0;
	box-sizing: border-box;
	height: var( --spv-height, 800px );
	max-height: 90vh;
	overflow: hidden;
	background: #ffffff;
}

.spv-canvas-scroll {
	position: absolute;
	inset: 0;
	overflow: auto;
	-webkit-overflow-scrolling: touch;
	display: flex;
	justify-content: safe center;
	align-items: flex-start;
	padding: 16px;
	box-sizing: border-box;
}

.spv-canvas {
	display: block;
	max-width: none;
	height: auto;
	flex: 0 0 auto;
	box-shadow: 0 2px 8px rgba( 0, 0, 0, 0.15 );
	background: #fff;
}

.spv-loading {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate( -50%, -50% );
	font-size: 14px;
	color: #6b7280;
}

/* ---------- Platzhalter / Hinweis ---------- */
.spv-empty {
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 160px;
	padding: 32px 20px;
	border: 1px dashed var( --spv-border, #e5e7eb );
	border-radius: 8px;
	background: #f9fafb;
	color: #6b7280;
	font-size: 15px;
	font-weight: 500;
	text-align: center;
}

.spv-notice {
	padding: 12px 16px;
	border: 1px dashed #f59e0b;
	background: #fffbeb;
	color: #92400e;
	border-radius: 8px;
	font-size: 14px;
	line-height: 1.5;
	margin-top: 8px;
}
.spv-notice code {
	background: rgba( 0, 0, 0, 0.06 );
	padding: 1px 5px;
	border-radius: 4px;
	font-size: 13px;
}

/* ---------- Mobile / Responsive ---------- */
@media ( max-width: 782px ) {
	.spv-body {
		flex-direction: column;
	}
	.spv-warning {
		padding: 10px 14px;
		font-size: 14px;
	}
	.spv-sidebar {
		flex: 0 0 auto;
		max-width: 100%;
		width: 100%;
		border-right: none;
		border-bottom: 1px solid var( --spv-border );
		padding: 8px;
	}
	.spv-tabs {
		flex-direction: row;
		flex-wrap: nowrap;
		overflow-x: auto;
		gap: 6px;
		padding-bottom: 4px;
		-webkit-overflow-scrolling: touch;
	}
	.spv-tab {
		white-space: nowrap;
		padding: 10px 14px;
	}
	.spv-toolbar {
		padding: 6px 8px;
		gap: 6px;
		justify-content: center;
	}
	.spv-btn {
		min-width: 42px;
		height: 42px;
	}
	.spv-btn-download {
		padding: 0 12px;
		font-size: 13px;
	}
	.spv-canvas-wrap {
		max-height: 80vh;
	}
	.spv-link-pane {
		min-height: 320px;
		padding: 32px 16px;
	}
	.spv-canvas-scroll {
		padding: 8px;
	}
	.spv-pageinfo {
		font-size: 13px;
		min-width: 54px;
	}
}

@media ( max-width: 400px ) {
	.spv-toolbar { gap: 4px; }
	.spv-btn-download { padding: 0 10px; font-size: 12px; }
}