*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

:root {
	--bg: #f0ede8;
	--bg2: #e8e4de;
	--panel: #faf8f5;
	--border: #d6d0c8;
	--text: #1a1714;
	--muted: #7a7068;
	--accent: #2a7a4a;
	/* grün – passend zur Kachel */
	--accent2: #1a5a34;
	--card: #ffffff;
	--shadow: 0 2px 12px rgba(0, 0, 0, .08), 0 1px 3px rgba(0, 0, 0, .05);
	--mono: monospace;
	--radius: 10px;
	--img-base: 'https://wallpaper.blicklichtgewitter.de/image.php';
}

html,
body {
	min-height: 100vh;
	background: var(--bg);
	font-family: sans-serif;
	color: var(--text);
}

body::before {
	content: '';
	position: fixed;
	inset: 0;
	background-image:
		linear-gradient(var(--border) 1px, transparent 1px),
		linear-gradient(90deg, var(--border) 1px, transparent 1px);
	background-size: 40px 40px;
	opacity: .3;
	pointer-events: none;
	z-index: 0;
}

/* ── Header ── */
.page-header {
	position: relative;
	z-index: 1;
	padding: 40px 48px 0;
	max-width: 1400px;
	margin: 0 auto;
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 12px;
}

.page-header-left .label {
	font-family: var(--mono);
	font-size: 11px;
	letter-spacing: .12em;
	text-transform: uppercase;
	color: var(--muted);
	margin-bottom: 8px;
}

.page-header-left h1 {
	font-size: clamp(1.6rem, 3vw, 2.4rem);
	font-weight: 800;
	letter-spacing: -.02em;
	line-height: 1.1;
}

.page-header-left h1 span {
	color: var(--accent);
}

/* ── Tabs ── */
.tabs-wrap {
	position: relative;
	z-index: 1;
	max-width: 1400px;
	margin: 28px auto 0;
	padding: 0 48px;
}

.tab-nav {
	display: flex;
	gap: 0;
	border-bottom: 2px solid var(--border);
}

.tab-btn {
	font-family: var(--mono);
	font-size: 12px;
	letter-spacing: .06em;
	text-transform: uppercase;
	padding: 10px 22px;
	background: none;
	border: none;
	border-bottom: 2px solid transparent;
	margin-bottom: -2px;
	cursor: pointer;
	color: var(--muted);
	transition: color .15s, border-color .15s;
}

.tab-btn:hover {
	color: var(--text);
}

.tab-btn.active {
	color: var(--accent);
	border-bottom-color: var(--accent);
	font-weight: 700;
}

.tab-panel {
	display: none;
	padding-top: 28px;
}

.tab-panel.active {
	display: block;
}

/* ── Tab 1: Bildliste ── */
.filter-bar {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-bottom: 24px;
	align-items: center;
}

.filter-label {
	font-family: var(--mono);
	font-size: 11px;
	color: var(--muted);
	margin-right: 4px;
}

.cat-btn {
	font-family: var(--mono);
	font-size: 11px;
	padding: 4px 12px;
	border-radius: 20px;
	border: 1px solid var(--border);
	background: var(--card);
	cursor: pointer;
	color: var(--muted);
	transition: all .15s;
	white-space: nowrap;
}

.cat-btn:hover {
	border-color: var(--accent);
	color: var(--accent);
}

.cat-btn.active {
	background: var(--accent);
	border-color: var(--accent);
	color: #fff;
	font-weight: 700;
}

/* Bildgrid – zeilenweise, gleiche Breite, natürliche Höhe */
.img-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
	gap: 10px;
}

.img-grid-item {
	position: relative;
	background: #111;
	border-radius: 8px;
	overflow: hidden;
	cursor: zoom-in;
}

.img-grid-item img {
	display: block;
	width: 100%;
	height: auto;
	transition: transform .3s ease;
}

.img-grid-item:hover img {
	transform: scale(1.04);
}

.img-id {
	position: absolute;
	top: 6px;
	right: 6px;
	font-family: var(--mono);
	font-size: 10px;
	font-weight: 700;
	background: rgba(0, 0, 0, .65);
	color: #fff;
	padding: 2px 6px;
	border-radius: 4px;
	pointer-events: none;
}

/* Lazy sentinel */
#load-sentinel {
	height: 40px;
}

.load-more-info {
	font-family: var(--mono);
	font-size: 11px;
	color: var(--muted);
	text-align: center;
	padding: 12px;
}

/* ── Tab 2: Beispiel-URLs ── */
.examples-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	grid-auto-rows: 1fr;
	gap: 20px;
}

@media (max-width: 1100px) {
	.examples-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 680px) {
	.examples-grid {
		grid-template-columns: 1fr;
	}
}

.example-card {
	background: var(--card);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	overflow: hidden;
	box-shadow: var(--shadow);
	display: flex;
	flex-direction: column;
	height: 100%;
}

.example-img-wrap {
	background: #fff;
	flex: 1;
	min-height: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
	margin-top: 20px;
}

.example-img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
}

.example-body {
	padding: 14px 16px 16px;
	flex: 1;
	display: flex;
	flex-direction: column;
	gap: 6px;
}

.example-title {
	font-weight: 700;
	font-size: .9rem;
}

.example-desc {
	font-family: var(--mono);
	font-size: 11px;
	color: var(--muted);
	line-height: 1.5;
	flex: 1;
}

.example-url {
	font-family: var(--mono);
	font-size: 10px;
	background: var(--bg2);
	border: 1px solid var(--border);
	border-radius: 5px;
	padding: 8px 10px;
	word-break: break-all;
	color: var(--accent2);
	display: block;
	text-decoration: none;
	transition: border-color .15s;
	margin-top: 4px;
}

.example-url:hover {
	border-color: var(--accent);
}

/* ── Tab 3: Spielwiese ── */
.playground-wrap {
	display: grid;
	grid-template-columns: 340px 1fr;
	gap: 28px;
	align-items: start;
}

@media (max-width: 900px) {
	.playground-wrap {
		grid-template-columns: 1fr;
	}
}

.controls-panel {
	background: var(--card);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 20px;
	box-shadow: var(--shadow);
	display: flex;
	flex-direction: column;
	gap: 18px;
}

.ctrl-group {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.ctrl-label {
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: .08em;
	text-transform: uppercase;
	color: var(--muted);
}

.ctrl-row {
	display: flex;
	gap: 8px;
	align-items: center;
	flex-wrap: wrap;
}

.ctrl-row label {
	font-family: var(--mono);
	font-size: 12px;
	color: var(--text);
	display: flex;
	align-items: center;
	gap: 5px;
}

.ctrl-row input[type=checkbox] {
	accent-color: var(--accent);
	width: 14px;
	height: 14px;
}

.ctrl-stack-label {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text);
}

.ctrl-full {
    width: 100% !important;
    box-sizing: border-box;
}

select,
input[type=number],
input[type=range] {
	font-family: var(--mono);
	font-size: 12px;
	border: 1px solid var(--border);
	border-radius: 5px;
	background: var(--bg2);
	color: var(--text);
	padding: 5px 8px;
}

select {
	cursor: pointer;
}

input[type=range] {
	padding: 0;
	cursor: pointer;
	accent-color: var(--accent);
}

input[type=number] {
	width: 72px;
}

.range-row {
	display: flex;
	align-items: center;
	gap: 10px;
}

.range-row input[type=range] {
	flex: 1;
}

.range-val {
	font-family: var(--mono);
	font-size: 12px;
	min-width: 36px;
	color: var(--accent);
	font-weight: 700;
}

.divider {
	border: none;
	border-top: 1px solid var(--border);
}

/* Preview pane */
.preview-pane {
	background: var(--card);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 20px;
	box-shadow: var(--shadow);
	display: flex;
	flex-direction: column;
	gap: 14px;
}

.preview-pane .preview-title {
	font-family: var(--mono);
	font-size: 11px;
	color: var(--muted);
	letter-spacing: .08em;
	text-transform: uppercase;
}

#preview-img-wrap {
	background: #fff;
	border-radius: 8px;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 200px;
	position: relative;
	aspect-ratio: 4/3;
	/* verhindert Layout-Sprünge */
}

#preview-img {
	display: block;
	max-width: 100%;
	max-height: 100%;
	width: auto;
	height: auto;
	/* immer proportional */
	object-fit: contain;
	border-radius: 6px;
	transition: opacity .2s;
}

#preview-spinner {
	position: absolute;
	inset: 0;
	display: none;
	align-items: center;
	justify-content: center;
	background: rgba(0, 0, 0, .5);
	border-radius: 8px;
}

#preview-spinner.show {
	display: flex;
}

.spinner-ring {
	width: 32px;
	height: 32px;
	border-radius: 50%;
	border: 3px solid rgba(255, 255, 255, .2);
	border-top-color: var(--accent);
	animation: spin .7s linear infinite;
}

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

#preview-url-box {
	font-family: var(--mono);
	font-size: 11px;
	background: var(--bg2);
	border: 1px solid var(--border);
	border-radius: 5px;
	padding: 10px 12px;
	word-break: break-all;
	color: var(--accent2);
	line-height: 1.5;
}

.copy-btn {
	align-self: flex-start;
	font-family: var(--mono);
	font-size: 11px;
	padding: 5px 14px;
	border-radius: 6px;
	border: 1px solid var(--accent);
	background: none;
	color: var(--accent);
	cursor: pointer;
	transition: all .15s;
}

.copy-btn:hover {
	background: var(--accent);
	color: #fff;
}

.reset-btn {
    display: block; width: 100%;
    font-family: var(--mono); font-size: 11px;
    padding: 7px 14px; border-radius: 6px;
    border: 1px solid var(--border); background: none;
    color: var(--muted); cursor: pointer; transition: all .15s;
    margin-top: 4px;
}
.reset-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── Lightbox ── */
#lightbox {
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, .88);
	display: none;
	align-items: center;
	justify-content: center;
	z-index: 100;
	cursor: zoom-out;
}

#lightbox.show {
	display: flex;
}

#lightbox img {
	max-width: 92vw;
	max-height: 92vh;
	border-radius: 8px;
	box-shadow: 0 8px 40px rgba(0, 0, 0, .6);
}

#lightbox-close {
	position: absolute;
	top: 20px;
	right: 24px;
	font-size: 2rem;
	color: #fff;
	cursor: pointer;
	line-height: 1;
	opacity: .7;
}

#lightbox-close:hover {
	opacity: 1;
}

#lightbox-id {
	position: absolute;
	bottom: 24px;
	left: 50%;
	transform: translateX(-50%);
	font-family: var(--mono);
	font-size: 13px;
	color: #fff;
	opacity: .6;
}

@media (max-width: 600px) {

	.page-header,
	.tabs-wrap {
		padding-left: 16px;
		padding-right: 16px;
	}

	.img-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}