/* ==========================================================================
   DTK Sponsoren – 3D-Flip-Karten
   ========================================================================== */

.dtk-sponsoren {
	--dtk-red: #c8102e;
	--dtk-ink: #1d2129;
	--dtk-muted: #5f6672;
	--dtk-card-bg: #ffffff;
	--dtk-radius: 18px;
	margin: 2rem 0;
}

.dtk-sponsoren *,
.dtk-sponsoren *::before,
.dtk-sponsoren *::after {
	box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   Bühne: dunkles Panel hinter den Karten (Standard), damit die weißen
   Karten auch auf hellen Seiten richtig wirken. [dtk_sponsoren stil="hell"]
   lässt das Panel weg.
   -------------------------------------------------------------------------- */

.dtk-sponsoren--dunkel {
	position: relative;
	border-radius: 26px;
	padding: clamp(30px, 5vw, 54px) clamp(14px, 4vw, 44px);
	background:
		radial-gradient(900px 420px at 10% -12%, rgba(200, 16, 46, 0.28), transparent 62%),
		radial-gradient(700px 400px at 96% 112%, rgba(212, 175, 55, 0.12), transparent 60%),
		linear-gradient(165deg, #1b1d24 0%, #101217 55%, #16181e 100%);
	box-shadow:
		inset 0 1px 0 rgba(255, 255, 255, 0.07),
		inset 0 0 0 1px rgba(255, 255, 255, 0.04),
		0 30px 60px -34px rgba(0, 0, 0, 0.55);
	overflow: hidden;
}

.dtk-sponsoren--dunkel::before {
	/* feine rote Akzentlinie oben */
	content: "";
	position: absolute;
	top: 0;
	left: 50%;
	transform: translateX(-50%);
	width: min(420px, 70%);
	height: 3px;
	border-radius: 0 0 3px 3px;
	background: linear-gradient(90deg, transparent, var(--dtk-red), transparent);
	opacity: 0.9;
}

.dtk-sponsoren--dunkel .dtk-card-inner {
	box-shadow: 0 22px 44px -20px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.dtk-sponsoren--dunkel .dtk-sponsor-card:hover .dtk-card-inner {
	box-shadow: 0 30px 56px -22px rgba(0, 0, 0, 0.8), 0 0 0 1px var(--tier-soft), 0 0 52px -4px var(--tier-soft);
}

.dtk-sponsoren__grid {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 34px 30px;
	padding: 14px 0 2px;
}

/* --------------------------------------------------------------------------
   Sponsoring-Typen: Farbe, Metallic-Verlauf, Schriftfarbe auf dem Verlauf
   -------------------------------------------------------------------------- */

.dtk-tier-gold {
	--tier: #c09526;
	--tier-soft: rgba(192, 149, 38, 0.14);
	--tier-grad: linear-gradient(115deg, #8a6d1f 0%, #e8c95c 30%, #fdf3bc 50%, #e8c95c 70%, #8a6d1f 100%);
	--tier-ink: #3d2f08;
	--tier-kachel: url("../img/kachel-gold.webp");
}

.dtk-tier-silber {
	--tier: #7e8894;
	--tier-soft: rgba(126, 136, 148, 0.14);
	--tier-grad: linear-gradient(115deg, #6d7683 0%, #c3cad3 30%, #f2f5f8 50%, #c3cad3 70%, #6d7683 100%);
	--tier-ink: #262c33;
	--tier-kachel: url("../img/kachel-silber.webp");
}

.dtk-tier-bronze {
	--tier: #a8683a;
	--tier-soft: rgba(168, 104, 58, 0.14);
	--tier-grad: linear-gradient(115deg, #7a4522 0%, #ce8f57 30%, #f3d3ae 50%, #ce8f57 70%, #7a4522 100%);
	--tier-ink: #3a2210;
	--tier-kachel: url("../img/kachel-bronze.webp");
}

.dtk-tier-rot {
	--tier: #c8102e;
	--tier-soft: rgba(200, 16, 46, 0.12);
	--tier-tint: rgba(200, 16, 46, 0.06);
	--tier-grad: linear-gradient(115deg, #8e0b20 0%, #e33652 30%, #ff7a8d 50%, #e33652 70%, #8e0b20 100%);
	--tier-ink: #ffffff;
	--tier-kachel: url("../img/kachel-rot.webp");
}

/* --------------------------------------------------------------------------
   Karte + 3D-Flip – quadratische Kacheln (--dtk-card-h = Kantenlänge),
   langer Text scrollt innerhalb der Rückseite.
   -------------------------------------------------------------------------- */

.dtk-sponsor-card {
	width: min(var(--dtk-card-h, 340px), 100%);
	perspective: 1400px;
	cursor: pointer;
	position: relative;
	outline: none;
	/* Eingangsanimation */
	opacity: 0;
	transform: translateY(26px);
	transition: opacity 0.6s ease var(--dtk-delay, 0ms), transform 0.6s ease var(--dtk-delay, 0ms);
}

.dtk-sponsor-card.dtk-inview {
	opacity: 1;
	transform: none;
}

.dtk-sponsor-card:focus-visible .dtk-card-inner {
	box-shadow: 0 0 0 3px var(--tier), 0 18px 40px -18px rgba(29, 33, 41, 0.35);
}

.dtk-card-inner {
	display: grid;
	transform-style: preserve-3d;
	transition: transform 0.75s cubic-bezier(0.32, 0.72, 0.25, 1.06), box-shadow 0.35s ease;
	box-shadow: 0 14px 34px -16px rgba(29, 33, 41, 0.3), 0 0 0 1px rgba(29, 33, 41, 0.05);
}

.dtk-sponsor-card:hover .dtk-card-inner {
	box-shadow: 0 24px 48px -18px rgba(29, 33, 41, 0.38), 0 0 0 1px var(--tier-soft), 0 0 42px -6px var(--tier-soft);
}

.dtk-sponsor-card.is-flipped .dtk-card-inner {
	transform: rotateY(180deg);
}

.dtk-card-face {
	grid-area: 1 / 1;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden;
	display: flex;
	flex-direction: column;
	align-items: center;
	aspect-ratio: 1 / 1;
	padding: 34px 24px 22px;
	border-radius: var(--dtk-radius);
	background: var(--dtk-card-bg);
	overflow: hidden;
	/* Platz für das überlappende Badge */
	margin-top: 14px;
}

/* Vorderseite: Kachel-Rahmen (Sponsoring-Typ) mit integriertem Logo.
   Das WebP enthält nur den Metallic-Rahmen, die Mitte ist transparent
   ausgestanzt – das Weiß darunter kommt vom Kartenhintergrund. */

.dtk-card-front {
	justify-content: center;
	border-radius: 0;
	background-color: var(--dtk-card-bg);
	background-image: var(--tier-kachel);
	background-repeat: no-repeat;
	background-size: 100% 100%;
	/* Rahmenband + Fuge liegen bei ~10,5 % – das Logo bleibt frei davon */
	padding: 14%;
}

.dtk-logo-wrap {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	flex: 1 1 auto;
	min-height: 0;
	overflow: hidden;
}

.dtk-logo-wrap img.dtk-logo {
	max-width: 100%;
	max-height: 100%;
	width: auto;
	height: auto;
	object-fit: contain;
	transition: transform 0.4s ease;
}

.dtk-sponsor-card:hover .dtk-logo-wrap img.dtk-logo {
	transform: scale(1.045);
}

.dtk-logo-text {
	font-size: 1.7rem;
	font-weight: 800;
	letter-spacing: 0.01em;
	color: var(--dtk-ink);
	text-align: center;
}

/* Glanz-Sweep über das Logo beim Hover */

.dtk-logo-wrap::after {
	content: "";
	position: absolute;
	inset: 0;
	background: linear-gradient(105deg, transparent 38%, rgba(255, 255, 255, 0.65) 50%, transparent 62%);
	transform: translateX(-120%);
	pointer-events: none;
}

.dtk-sponsor-card:hover .dtk-logo-wrap::after,
.dtk-sponsor-card.is-flipped .dtk-logo-wrap::after {
	animation: dtk-shine 0.9s ease;
}

@keyframes dtk-shine {
	to {
		transform: translateX(120%);
	}
}

/* Rückseite: Text mit farbigem Rahmen (Typ des Sponsorings) */

.dtk-card-back {
	transform: rotateY(180deg);
	justify-content: flex-start;
	gap: 12px;
	border: 3px solid var(--tier);
	background:
		linear-gradient(180deg, var(--tier-tint, var(--tier-soft)), transparent 26%),
		var(--dtk-card-bg);
	text-align: center;
}

.dtk-sponsoren .dtk-sponsor-name {
	margin: 4px 0 0;
	font-size: 1.25rem;
	font-weight: 800;
	line-height: 1.25;
	color: var(--dtk-ink) !important;
}

.dtk-sponsor-name::after {
	content: "";
	display: block;
	width: 44px;
	height: 3px;
	margin: 10px auto 0;
	border-radius: 3px;
	background: var(--tier-grad);
}

.dtk-sponsoren .dtk-sponsor-text {
	flex: 1 1 auto;
	min-height: 0;
	width: 100%;
	overflow-y: auto;
	padding-right: 4px;
	font-size: 0.95rem;
	line-height: 1.55;
	color: var(--dtk-muted) !important;
	scrollbar-width: thin;
	scrollbar-color: var(--tier) transparent;
}

.dtk-sponsor-text::-webkit-scrollbar {
	width: 6px;
}

.dtk-sponsor-text::-webkit-scrollbar-track {
	background: transparent;
}

.dtk-sponsor-text::-webkit-scrollbar-thumb {
	background: var(--tier-soft);
	border-radius: 3px;
}

.dtk-sponsor-text:hover::-webkit-scrollbar-thumb {
	background: var(--tier);
}

/* Ausblend-Verlauf unten, solange noch Text unterhalb liegt (per JS) */

.dtk-sponsor-text.dtk-more {
	-webkit-mask-image: linear-gradient(180deg, #000 calc(100% - 30px), transparent);
	mask-image: linear-gradient(180deg, #000 calc(100% - 30px), transparent);
}

.dtk-sponsor-text p {
	margin: 0 0 0.7em;
}

.dtk-sponsor-text p:last-child {
	margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Badge (Sponsoring-Typ) mit Metallic-Schimmer
   -------------------------------------------------------------------------- */

.dtk-tier-badge {
	position: absolute;
	top: 13px;
	left: 50%;
	transform: translate(-50%, -50%);
	white-space: nowrap;
	padding: 6px 18px;
	border-radius: 999px;
	font-size: 0.72rem;
	font-weight: 800;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--tier-ink);
	background: var(--tier-grad);
	background-size: 220% 100%;
	box-shadow: 0 4px 12px -4px rgba(29, 33, 41, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.45);
	animation: dtk-shimmer 5s linear infinite;
}

@keyframes dtk-shimmer {
	0% {
		background-position: 0% 0;
	}
	100% {
		background-position: 220% 0;
	}
}

/* --------------------------------------------------------------------------
   Link zur Sponsor-Website: Button auf der Rückseite.
   Farben mit !important, damit Theme-Linkfarben (z. B. Rot auf Rot)
   die Lesbarkeit nicht kaputt machen.
   -------------------------------------------------------------------------- */

.dtk-sponsoren .dtk-btn,
.dtk-sponsoren .dtk-btn:visited {
	display: inline-block;
	padding: 11px 26px;
	border-radius: 999px;
	font-size: 0.9rem;
	font-weight: 800;
	letter-spacing: 0.02em;
	text-decoration: none !important;
	color: var(--tier-ink) !important;
	background: var(--tier-grad);
	background-size: 220% 100%;
	border: 0;
	box-shadow: 0 6px 16px -6px var(--tier);
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.dtk-sponsoren .dtk-btn:hover,
.dtk-sponsoren .dtk-btn:focus {
	transform: translateY(-2px);
	box-shadow: 0 10px 22px -8px var(--tier);
	color: var(--tier-ink) !important;
	text-decoration: none !important;
	animation: dtk-shimmer 1.6s linear infinite;
}

/* Der rote Button bekommt zur Sicherheit einen Text-Schatten für Kontrast */

.dtk-tier-rot .dtk-btn,
.dtk-tier-rot .dtk-btn:visited {
	text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

/* --------------------------------------------------------------------------
   Reduzierte Bewegung: Flip ohne 3D-Animation, keine Dauer-Effekte
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
	.dtk-sponsor-card,
	.dtk-card-inner,
	.dtk-logo-wrap img.dtk-logo {
		transition: none !important;
	}

	.dtk-sponsor-card {
		opacity: 1;
		transform: none;
	}

	.dtk-tier-badge,
	.dtk-btn:hover,
	.dtk-sponsor-card:hover .dtk-logo-wrap::after {
		animation: none !important;
	}
}

/* --------------------------------------------------------------------------
   Kleine Bildschirme
   -------------------------------------------------------------------------- */

@media (max-width: 420px) {
	.dtk-sponsoren__grid {
		gap: 30px 0;
	}

	.dtk-card-back {
		padding: 30px 18px 18px;
	}
}