/* IceVision – prezentační web */
:root {
	--bg: #071629;
	--bg2: #0b2342;
	--card: #10294b;
	--line: rgba(255, 255, 255, .1);
	--text: #eef5fc;
	--muted: #a8bdd6;
	--ice: #4cc3ff;
	--blue: #2f7bea;
	--red: #e5383b;
	--yellow: #ffd23f;
	--radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
	-webkit-text-size-adjust: 100%;
}

/* jazyky – zobrazí se jen texty aktuálního jazyka */
html[data-lang="cs"] [lang="en"], html[data-lang="en"] [lang="cs"] { display: none !important; }

a { color: var(--ice); }
img, video { max-width: 100%; display: block; }

.top {
	position: sticky; top: 0; z-index: 10;
	display: flex; align-items: center; justify-content: space-between;
	padding: 12px max(20px, calc((100% - 1160px) / 2));
	background: rgba(7, 22, 41, .85);
	-webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.wordmark { font-size: 24px; font-weight: 800; letter-spacing: -.5px; }
.wordmark b { color: var(--ice); }
.lang { display: flex; gap: 4px; }
.lang button {
	font: inherit; font-size: 14px; font-weight: 700; color: var(--muted);
	background: none; border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; cursor: pointer;
}
html[data-lang="cs"] [data-set-lang="cs"], html[data-lang="en"] [data-set-lang="en"] { background: var(--ice); color: var(--bg); border-color: transparent; }

section { padding: 72px max(20px, calc((100% - 1160px) / 2)); }
h1, h2, h3 { line-height: 1.15; margin: 0 0 16px; }
h1 { font-size: clamp(36px, 5.5vw, 60px); letter-spacing: -1px; }
h2 { font-size: clamp(28px, 3.6vw, 40px); text-align: center; margin-bottom: 40px; }
h3 { font-size: 20px; }

.hero {
	display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px; align-items: center;
	padding-top: 56px;
	background: radial-gradient(900px 500px at 85% 10%, rgba(47, 123, 234, .35), transparent 70%);
}
.eyebrow { color: var(--yellow); font-weight: 800; text-transform: uppercase; letter-spacing: 1.5px; font-size: 14px; margin: 0 0 12px; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
	display: inline-flex; align-items: center; justify-content: center;
	padding: 13px 22px; border-radius: 12px; font-weight: 700; text-decoration: none;
	color: var(--text); border: 1px solid var(--line); background: rgba(255, 255, 255, .04);
}
.btn.primary { background: var(--ice); color: var(--bg); border-color: transparent; }
.btn.big { font-size: 20px; padding: 16px 30px; }
.btn:hover { filter: brightness(1.08); }
.platforms { color: var(--muted); font-size: 14px; margin-top: 22px; letter-spacing: .5px; }

figure { margin: 0; }
figure video {
	width: 100%; border-radius: var(--radius); background: #000;
	box-shadow: 0 24px 60px rgba(0, 0, 0, .45); border: 1px solid var(--line);
}
figcaption { color: var(--muted); font-size: 14px; margin-top: 10px; }

.features { background: var(--bg2); }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grid article {
	background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
}
.grid p { margin: 0; color: var(--muted); font-size: 16px; }
.ico { width: 46px; height: 46px; border-radius: 12px; background: rgba(76, 195, 255, .12); display: grid; place-items: center; margin-bottom: 14px; }
.ico svg { width: 26px; height: 26px; fill: none; stroke: var(--ice); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.videos { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.videos figure:first-child { grid-column: 1 / -1; max-width: 860px; margin: 0 auto; }
.ref { text-align: center; color: var(--muted); margin-top: 36px; font-style: italic; }

.contact { text-align: center; background: radial-gradient(700px 300px at 50% 0%, rgba(76, 195, 255, .18), transparent 70%); }
.contact p { color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.price { margin: 0 auto 18px; }
.price-amount { font-size: clamp(36px, 5vw, 52px); font-weight: 800; color: var(--yellow); letter-spacing: -1px; }
.price-note { color: var(--text); font-weight: 600; }

.foot {
	display: flex; justify-content: space-between; color: var(--muted); font-size: 14px;
	padding: 24px max(20px, calc((100% - 1160px) / 2)); border-top: 1px solid var(--line);
}

@media (max-width: 1100px) {
	.grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
	.hero, .videos { grid-template-columns: 1fr; }
	.grid { grid-template-columns: 1fr 1fr; }
	section { padding-top: 52px; padding-bottom: 52px; }
}
@media (max-width: 600px) {
	.grid { grid-template-columns: 1fr; }
	.wordmark { font-size: 21px; }
}