/* ==========================================================================
   IQusion Clean Theme — main.css

   Мінімальна, чиста CSS-база. Без overhead-у з v2.x. Без 2700 рядків.
   Темна Palantir-естетика IQusion: deep navy + red accent.
   ========================================================================== */

:root {
	--bg:           #0F1A4A;
	--bg-elevated:  #1E2D5C;
	--bg-deep:      #0A1238;
	--fg:           #FFFFFF;
	--fg-muted:     #B8C5D6;
	--fg-soft:      #6B7A99;
	--accent-red:   #E63946;
	--accent-blue:  #4F8EF7;
	--line:         rgba(255,255,255,0.08);
	--line-strong:  rgba(255,255,255,0.16);

	--font-sans:    'Inter', system-ui, -apple-system, sans-serif;
	--font-mono:    'JetBrains Mono', 'Courier New', monospace;

	--container:    1200px;
	--header-h:     72px;
	--radius:       8px;
	--transition:   200ms ease-out;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
	margin: 0;
	font-family: var(--font-sans);
	font-size: 16px;
	line-height: 1.6;
	color: var(--fg);
	background: var(--bg);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--fg); }

h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 1rem; }
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.5rem); }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem); }
h3 { font-size: 1.25rem; }
p  { margin: 0 0 1rem; color: var(--fg-muted); }

.container {
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 1.5rem;
}


/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
	background: rgba(15, 26, 74, 0.9);
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--line);
	position: sticky;
	top: 0;
	z-index: 100;
}
.header-inner {
	display: flex;
	align-items: center;
	gap: 2rem;
	min-height: var(--header-h);
}
.logo {
	font-weight: 800;
	font-size: 1.25rem;
	letter-spacing: -0.02em;
	text-decoration: none;
	flex-shrink: 0;
}
.logo__iq    { color: var(--accent-red); }
.logo__usion { color: var(--fg); }

.main-nav {
	display: flex;
	align-items: center;
	gap: 1.75rem;
	flex: 1;
}
.main-nav > a,
.nav-dropdown__trigger {
	color: var(--fg-muted);
	font-size: 14px;
	font-weight: 500;
	text-decoration: none;
	transition: color var(--transition);
	white-space: nowrap;
	cursor: pointer;
}
.main-nav > a:hover,
.nav-dropdown__trigger:hover { color: var(--fg); }

.nav-dropdown { position: relative; }
.nav-dropdown__panel {
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 240px;
	background: var(--bg-elevated);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	padding: 8px;
	box-shadow: 0 16px 32px rgba(0,0,0,0.5);
	opacity: 0;
	visibility: hidden;
	transform: translateY(-8px);
	transition: all var(--transition);
	z-index: 110;
}
.nav-dropdown:hover .nav-dropdown__panel,
.nav-dropdown:focus-within .nav-dropdown__panel {
	opacity: 1;
	visibility: visible;
	transform: translateY(4px);
}
.nav-dropdown__panel a {
	display: block;
	padding: 10px 14px;
	color: var(--fg-muted);
	font-size: 14px;
	border-radius: 4px;
	transition: all var(--transition);
}
.nav-dropdown__panel a:hover {
	background: rgba(255,255,255,0.05);
	color: var(--fg);
}
.nav-dropdown__panel--2col {
	min-width: 480px;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 4px;
}

.header-right {
	display: flex;
	align-items: center;
	gap: 1.25rem;
	flex-shrink: 0;
}
.lang-switch {
	display: flex;
	gap: 4px;
	font-family: var(--font-mono);
	font-size: 12px;
	font-weight: 600;
}
.lang-switch a {
	padding: 4px 8px;
	color: var(--fg-soft);
	border-radius: 4px;
	transition: all var(--transition);
}
.lang-switch a.active { color: var(--fg); background: var(--bg-elevated); }
.lang-switch a:hover { color: var(--fg); }

.cta-btn {
	background: var(--accent-red);
	color: var(--fg);
	padding: 10px 20px;
	border-radius: var(--radius);
	font-size: 14px;
	font-weight: 600;
	text-decoration: none;
	transition: all var(--transition);
}
.cta-btn:hover { background: #DC2F3D; color: var(--fg); transform: translateY(-1px); }

.nav-toggle {
	display: none;
	background: none;
	border: none;
	cursor: pointer;
	padding: 8px;
	flex-direction: column;
	gap: 4px;
	margin-left: auto;
}
.nav-toggle span {
	display: block;
	width: 24px;
	height: 2px;
	background: var(--fg);
}


/* ==========================================================================
   PAGE BASICS
   ========================================================================== */
.page-main { min-height: calc(100vh - var(--header-h) - 200px); }

.page-hero {
	padding: 5rem 0 3rem;
	border-bottom: 1px solid var(--line);
}
.page-hero__crumbs {
	font-family: var(--font-mono);
	font-size: 12px;
	color: var(--fg-soft);
	margin-bottom: 1rem;
}
.page-hero__crumbs a { color: var(--fg-soft); }
.page-hero__crumbs a:hover { color: var(--fg-muted); }
.page-hero__crumbs .current { color: var(--fg-muted); }
.page-hero__title { margin: 0; }

.page-content-section { padding: 3rem 0 5rem; }
.page-content { max-width: 720px; }
.page-content p { color: var(--fg-muted); font-size: 1.0625rem; }


/* ==========================================================================
   FRONT PAGE HERO
   ========================================================================== */
.hero {
	padding: 6rem 0 4rem;
	border-bottom: 1px solid var(--line);
}
.hero-content { max-width: 880px; }
.hero-eyebrow {
	font-family: var(--font-mono);
	font-size: 12px;
	letter-spacing: 0.15em;
	color: var(--accent-red);
	margin-bottom: 1.5rem;
}
.hero-title {
	font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
	font-weight: 800;
	letter-spacing: -0.025em;
	line-height: 1.05;
	margin: 0 0 1.5rem;
}
.hero-subtitle {
	font-size: 1.125rem;
	color: var(--fg-muted);
	margin-bottom: 2.5rem;
	max-width: 600px;
}
.hero-actions {
	display: flex;
	gap: 1rem;
	flex-wrap: wrap;
}


/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 14px 24px;
	border-radius: var(--radius);
	font-size: 15px;
	font-weight: 600;
	text-decoration: none;
	border: 1px solid transparent;
	cursor: pointer;
	transition: all var(--transition);
}
.btn-primary {
	background: var(--accent-red);
	color: var(--fg);
}
.btn-primary:hover { background: #DC2F3D; color: var(--fg); transform: translateY(-1px); }

.btn-ghost {
	background: transparent;
	color: var(--fg);
	border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--fg); background: rgba(255,255,255,0.05); color: var(--fg); }


/* ==========================================================================
   QUICK GRID (front-page sections, children grid)
   ========================================================================== */
.section-title {
	font-size: 1.75rem;
	margin-bottom: 2rem;
}
.quick-section { padding: 4rem 0; }
.quick-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
	gap: 1rem;
}
.quick-card {
	display: flex;
	align-items: center;
	gap: 14px;
	padding: 20px;
	background: var(--bg-elevated);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	color: var(--fg);
	text-decoration: none;
	transition: all var(--transition);
}
.quick-card:hover {
	border-color: var(--accent-red);
	color: var(--fg);
	transform: translateY(-2px);
	box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.quick-card__icon { font-size: 1.5rem; flex-shrink: 0; }
.quick-card__label { flex: 1; font-weight: 600; font-size: 0.9375rem; }
.quick-card__arrow { color: var(--fg-soft); transition: all var(--transition); }
.quick-card:hover .quick-card__arrow { color: var(--accent-red); transform: translateX(4px); }

.children-grid { margin-top: 4rem; padding-top: 3rem; border-top: 1px solid var(--line); }


/* ==========================================================================
   POSTS (news archive + single)
   ========================================================================== */
.post-list { display: flex; flex-direction: column; gap: 2rem; }
.post-card {
	padding: 1.5rem;
	background: var(--bg-elevated);
	border: 1px solid var(--line);
	border-radius: var(--radius);
}
.post-card h2 { margin: 0 0 0.5rem; font-size: 1.5rem; }
.post-card h2 a { color: var(--fg); text-decoration: none; }
.post-card h2 a:hover { color: var(--accent-blue); }
.post-meta {
	font-family: var(--font-mono);
	font-size: 12px;
	color: var(--fg-soft);
	margin-bottom: 1rem;
}


/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
	background: var(--bg-deep);
	border-top: 1px solid var(--line);
	padding: 4rem 0 1.5rem;
	margin-top: 5rem;
}
.footer-inner {
	display: grid;
	grid-template-columns: 2fr 1fr 1fr 1fr;
	gap: 3rem;
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 1.5rem;
}
.footer-tagline {
	color: var(--fg-soft);
	font-size: 14px;
	max-width: 320px;
	margin-top: 1rem;
}
.footer-col h4 {
	font-size: 12px;
	font-family: var(--font-mono);
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--fg-soft);
	margin-bottom: 1rem;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a {
	color: var(--fg-muted);
	font-size: 14px;
	text-decoration: none;
}
.footer-col a:hover { color: var(--fg); }

.footer-bottom {
	display: flex;
	justify-content: space-between;
	gap: 1rem;
	flex-wrap: wrap;
	padding-top: 2rem;
	margin-top: 2rem;
	border-top: 1px solid var(--line);
	color: var(--fg-soft);
	font-size: 12px;
	font-family: var(--font-mono);
}


/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
	.nav-toggle { display: flex; }
	.main-nav {
		display: none;
		position: absolute;
		top: 100%;
		left: 0;
		right: 0;
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		background: var(--bg-elevated);
		border-bottom: 1px solid var(--line);
		padding: 1rem 0;
	}
	body.nav-open .main-nav { display: flex; }
	.main-nav > a,
	.nav-dropdown__trigger {
		padding: 12px 1.5rem;
	}
	.nav-dropdown { display: contents; }
	.nav-dropdown__panel {
		position: static;
		opacity: 1;
		visibility: visible;
		transform: none;
		background: transparent;
		border: none;
		box-shadow: none;
		padding-left: 2.5rem;
		min-width: 0;
		display: block;
	}
	.nav-dropdown__panel--2col { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
	.footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
	.hero { padding: 3rem 0 2rem; }
	.page-hero { padding: 3rem 0 2rem; }
}

@media (max-width: 480px) {
	.footer-inner { grid-template-columns: 1fr; }
	.hero-actions { flex-direction: column; align-items: stretch; }
	.hero-actions .btn { justify-content: center; }
}