:root {
	--bg: #0b1020;
	--surface: #0f172a;
	--surface-2: #0b1324;
	--text: #e5e7eb;
	--muted: #94a3b8;
	--primary: #0ea5e9;
	--primary-700: #0284c7;
	--ring: rgba(14, 165, 233, 0.35);
	--card: #0b1324;
	--border: #1f2a44;
}

[data-theme="light"] {
	--bg: #ffffff;
	--surface: #f8fafc;
	--surface-2: #f1f5f9;
	--text: #0f172a;
	--muted: #475569;
	--primary: #0284c7;
	--primary-700: #0369a1;
	--ring: rgba(2, 132, 199, 0.25);
	--card: #ffffff;
	--border: #e2e8f0;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
	font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
	background: linear-gradient(180deg, var(--bg), var(--surface));
	color: var(--text);
	line-height: 1.6;
}

.container a,
a {
	color: var(--primary);
	text-decoration: none;
}
.nav-menu a,
.nav-menu a:visited { color: var(--muted); text-decoration: none; }
.container a:hover,
a:hover { text-decoration: underline; }
.container a:visited,
a:visited { color: var(--primary); }
.container a:focus-visible,
a:focus-visible {
	outline: 0;
	box-shadow: 0 0 0 4px var(--ring);
	border-radius: 6px;
}

.container {
	max-width: 1120px;
	margin: 0 auto;
	padding: 0 20px;
}

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	backdrop-filter: saturate(1.2) blur(8px);
	background: color-mix(in oklab, var(--surface), transparent 30%);
	border-bottom: 1px solid var(--border);
}
.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	height: 64px;
}
.brand {
	font-weight: 800;
	color: var(--text);
	text-decoration: none;
	font-size: 1.1rem;
	letter-spacing: .2px;
}

.nav-toggle { display: none; background: transparent; border: none; cursor: pointer; }
.nav-toggle .bar { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 1px; }
.nav-menu { display: flex; gap: 20px; align-items: center; list-style: none; margin: 0; padding: 0; }
.nav-menu a { color: var(--muted); text-decoration: none; font-weight: 500; }
.nav-menu a:hover, .nav-menu a:focus { color: var(--text); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.icon-btn {
	display: inline-flex; align-items: center; justify-content: center;
	width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border);
	background: var(--surface-2); color: var(--text); cursor: pointer;
	transition: transform .12s ease, background .2s ease, border-color .2s ease;
}
.icon-btn:hover { transform: translateY(-1px); border-color: var(--ring); }
.icon-btn .icon { font-size: 16px; line-height: 1; }
.icon-btn .moon { display: none; }
[data-theme="light"] .icon-btn .sun { display: none; }
[data-theme="light"] .icon-btn .moon { display: inline; }

.lang-switch { display: inline-flex; gap: 6px; background: var(--surface-2); padding: 4px; border-radius: 10px; border: 1px solid var(--border); }
.lang-btn { padding: 6px 10px; border-radius: 8px; border: none; background: transparent; color: var(--muted); cursor: pointer; font-weight: 600; }
.lang-btn[aria-pressed="true"] { background: var(--card); color: var(--text); box-shadow: 0 0 0 2px var(--ring) inset; }

.section { padding: 72px 0; }
.section.alt { background: var(--surface); }
.center { text-align: center; }
.lead { color: var(--muted); font-size: 1.1rem; max-width: 56ch; }
.mt-24 { margin-top: 24px; }

.hero {
	padding-top: 96px;
	background:
		radial-gradient(600px 300px at 80% -10%, color-mix(in oklab, var(--primary) 40%, transparent), transparent),
		radial-gradient(800px 400px at -10% -10%, color-mix(in oklab, var(--primary) 25%, transparent), transparent);
}
.hero-inner {
	display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 32px; align-items: center;
}
.hero-visual { position: relative; }
.hero-visual .glow {
	position: absolute; inset: -20px; filter: blur(40px); opacity: .35;
	background: radial-gradient(circle at 30% 20%, var(--primary), transparent 45%);
	z-index: -1;
}
.hero img { width: 100%; height: auto; border-radius: 18px; border: 1px solid var(--border); background: var(--card); }
.cta { display: flex; gap: 12px; margin: 18px 0 8px; }

.btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 8px;
	height: 44px; padding: 0 16px; border-radius: 12px; text-decoration: none; font-weight: 700;
	border: 1px solid var(--border); color: var(--text); background: var(--card);
	transition: transform .12s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn:visited { color: var(--text); }
.btn:hover { transform: translateY(-1px); border-color: var(--ring); box-shadow: 0 6px 24px -12px var(--ring); }
.btn-primary { background: linear-gradient(180deg, var(--primary), var(--primary-700)); border: 1px solid color-mix(in oklab, var(--primary), #000 20%); color: #ffffff; }
.btn-primary:visited { color: #ffffff; }
.btn-outline { background: transparent; }

.stats {
	display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; list-style: none; margin: 22px 0 0; padding: 0;
}
.stats li {
	border: 1px solid var(--border); background: var(--card); border-radius: 14px; padding: 14px; display: flex; align-items: center; gap: 8px; min-width: 0;
}
.stat-value { font-size: 1.6rem; font-weight: 800; }
.stat-suffix { font-weight: 800; }
.stat-label { color: var(--muted); font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.grid-2 { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 32px; align-items: start; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 14px 0 0; list-style: none; }
.chips li { padding: 8px 12px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); color: var(--muted); font-weight: 700; }

.card-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
	background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px;
	box-shadow: 0 8px 32px -24px var(--ring);
}
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.service { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px; }
.service h3 { margin-top: 0; }
.service ul { margin: 0; padding-left: 18px; color: var(--muted); }

.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.portfolio-card { position: relative; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); background: var(--card); display: block; }
.portfolio-card img { display: block; width: 100%; height: 220px; object-fit: cover; }
.portfolio-card .overlay {
	position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(0,0,0,.4));
	color: #fff; display: flex; flex-direction: column; justify-content: end; padding: 14px; opacity: 0; transition: opacity .2s ease;
}
.portfolio-card:hover .overlay { opacity: 1; }

.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.blog-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px; }
.text-link { color: var(--primary); text-decoration: none; font-weight: 700; }
.text-link:hover { text-decoration: underline; }

.form { display: grid; gap: 12px; }
.form-row { display: grid; gap: 8px; }
.form input, .form textarea {
	width: 100%; padding: 12px 12px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
	outline: none; box-shadow: 0 0 0 0 var(--ring);
}
.form input:focus, .form textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
.error { color: #ef4444; font-size: .9rem; min-height: 1.2em; }
.form-status { margin-left: 10px; color: var(--muted); }

.site-footer { background: var(--surface-2); border-top: 1px solid var(--border); padding: 36px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr; gap: 16px; }
.footer-grid h6 { margin: 0 0 8px; color: var(--muted); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid a { color: var(--muted); text-decoration: none; }
.footer-grid a:hover { color: var(--text); }
.footer-bottom {
	margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border);
	display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted);
}
.footer-bottom .links { display: inline-flex; gap: 12px; }
.footer-bottom .links a { color: var(--muted); text-decoration: none; }
.footer-bottom .links a:hover { color: var(--text); text-decoration: underline; }
.footer-bottom .links a:visited { color: var(--muted); }

.sr-only {
	position: absolute !important;
	height: 1px; width: 1px; overflow: hidden;
	clip: rect(1px, 1px, 1px, 1px); white-space: nowrap;
}

@media (max-width: 1024px) {
	.hero-inner, .grid-2 { grid-template-columns: 1fr; }
	.card-list { grid-template-columns: 1fr 1fr; }
	.service-grid, .portfolio-grid, .blog-grid { grid-template-columns: 1fr 1fr; }
	.footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
	.nav-toggle { display: inline-flex; }
	.nav-menu {
		position: absolute; right: 20px; top: 64px; background: var(--surface-2);
		border: 1px solid var(--border); border-radius: 14px; padding: 8px; display: none; flex-direction: column; gap: 6px;
	}
	.nav-menu.open { display: flex; }
	.stats { grid-template-columns: 1fr; }
	.card-list, .service-grid, .portfolio-grid, .blog-grid, .footer-grid { grid-template-columns: 1fr; }
}