/**
 * Augmented PDF Reader — viewer styles (3 modes)
 */

.apdf-reader {
	--apdf-bg: #1a1a1a;
	--apdf-toolbar: #2a2a2a;
	--apdf-toolbar-text: #f0f0f0;
	--apdf-accent: #4a90e2;
	--apdf-accent-hover: #357abd;
	--apdf-page-bg: #ffffff;
	--apdf-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);

	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	background: var(--apdf-bg);
	border-radius: 8px;
	overflow: hidden;
	margin: 2em 0;
	box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

/* === Toolbar === */
.apdf-toolbar {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 0.75em 1em;
	background: var(--apdf-toolbar);
	color: var(--apdf-toolbar-text);
	flex-wrap: wrap;
	gap: 0.5em;
}
.apdf-toolbar-sticky {
	position: sticky;
	top: 0;
	z-index: 10;
}
.apdf-title {
	margin: 0;
	font-size: 1em;
	font-weight: 600;
	color: var(--apdf-toolbar-text);
	flex: 1;
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.apdf-toolbar-actions {
	display: flex;
	gap: 0.4em;
	align-items: center;
}

/* === Buttons === */
.apdf-btn {
	background: rgba(255, 255, 255, 0.1);
	color: var(--apdf-toolbar-text);
	border: none;
	padding: 0.5em 0.8em;
	border-radius: 4px;
	cursor: pointer;
	font-size: 13px;
	display: inline-flex;
	align-items: center;
	gap: 0.3em;
	transition: background 0.15s;
}
.apdf-btn:hover { background: rgba(255, 255, 255, 0.2); }
.apdf-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.apdf-btn-primary {
	background: var(--apdf-accent);
}
.apdf-btn-primary:hover { background: var(--apdf-accent-hover); }
.apdf-btn .dashicons {
	font-size: 16px;
	width: 16px;
	height: 16px;
}
.apdf-page-info {
	font-size: 13px;
	padding: 0 0.5em;
	font-variant-numeric: tabular-nums;
	white-space: nowrap;
}

/* === Stage (zone du PDF) === */
.apdf-stage {
	position: relative;
	min-height: 600px;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 2em 1em;
	overflow: hidden;
}
.apdf-stage-scroll {
	min-height: 800px;
	max-height: 90vh;
	overflow-y: auto;
	padding: 1em;
	display: block;
}

/* === Loader === */
.apdf-loader {
	position: absolute;
	top: 0; left: 0; right: 0; bottom: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(26, 26, 26, 0.9);
	z-index: 5;
	transition: opacity 0.3s;
}
.apdf-loader.is-hidden {
	opacity: 0;
	pointer-events: none;
}
.apdf-spinner {
	width: 48px;
	height: 48px;
	border: 4px solid rgba(255, 255, 255, 0.2);
	border-top-color: var(--apdf-accent);
	border-radius: 50%;
	animation: apdf-spin 0.8s linear infinite;
}
@keyframes apdf-spin {
	to { transform: rotate(360deg); }
}

/* ====================================================
 * MODE FLIPBOOK
 * ==================================================== */
.apdf-flipbook {
	box-shadow: var(--apdf-shadow);
}
.apdf-flipbook .stf__block {
	background: var(--apdf-page-bg);
}
.apdf-flipbook canvas {
	display: block;
	width: 100%;
	height: auto;
}

/* ====================================================
 * MODE SLIDE HORIZONTAL
 * ==================================================== */
.apdf-mode-slide .apdf-stage {
	display: block;
	overflow: hidden;
}
.apdf-slide-track {
	display: flex;
	transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
	height: 100%;
	align-items: center;
}
.apdf-slide-page {
	flex: 0 0 100%;
	display: flex;
	justify-content: center;
	align-items: center;
	padding: 0 2em;
}
.apdf-slide-page canvas {
	max-width: 100%;
	max-height: 70vh;
	height: auto;
	background: var(--apdf-page-bg);
	box-shadow: var(--apdf-shadow);
}

/* ====================================================
 * MODE SCROLL VERTICAL
 * ==================================================== */
.apdf-scroll-track {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 1em;
}
.apdf-scroll-page {
	background: var(--apdf-page-bg);
	box-shadow: var(--apdf-shadow);
	max-width: 100%;
}
.apdf-scroll-page canvas {
	display: block;
	max-width: 100%;
	height: auto;
}

/* ====================================================
 * FULLSCREEN
 * ==================================================== */
.apdf-reader.is-fullscreen {
	margin: 0;
	border-radius: 0;
	height: 100vh;
	display: flex;
	flex-direction: column;
}
.apdf-reader.is-fullscreen .apdf-stage {
	flex: 1;
	min-height: 0;
}

/* ====================================================
 * RESPONSIVE
 * ==================================================== */
@media (max-width: 600px) {
	.apdf-toolbar {
		padding: 0.5em;
	}
	.apdf-title {
		font-size: 0.9em;
		flex: 1 1 100%;
		text-align: center;
		margin-bottom: 0.4em;
	}
	.apdf-toolbar-actions {
		flex: 1 1 100%;
		justify-content: center;
	}
	.apdf-btn {
		padding: 0.4em 0.6em;
		font-size: 12px;
	}
	.apdf-stage {
		min-height: 400px;
		padding: 1em 0.5em;
	}
}

.apdf-error {
	padding: 2em;
	text-align: center;
	color: #b32d2e;
	background: #fce4e4;
	border-radius: 4px;
}