/* Fonte base e reset leve */
:root {
	--bg: #0b1020;
	--surface: #0f172a;
	--surface-2: #111827;
	--text: #e5e7eb;
	--muted: #9aa3b2;
	--primary: #0ea5e9;
	--primary-600: #0284c7;
	--accent: #22d3ee;
	--ring: 0 0 0 3px rgba(14,165,233,0.25);

	--radius: 14px;
	--radius-sm: 10px;
	--shadow-1: 0 10px 30px rgba(2,8,23,0.5);
	--shadow-soft: 0 8px 24px rgba(2,8,23,0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
	margin: 0;
	font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
	background: linear-gradient(180deg, #0b1020 0%, #0b1224 100%);
	color: var(--text);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }

.container {
	width: 100%;
	max-width: 1100px;
	margin: 0 auto;
	padding: 0 20px;
}

.muted { color: var(--muted); }
.small { font-size: 0.9rem; }

/* Header */
.site-header {
	position: sticky;
	top: 0;
	backdrop-filter: saturate(140%) blur(10px);
	background: rgba(11, 16, 32, 0.7);
	border-bottom: 1px solid rgba(255,255,255,0.06);
	z-index: 50;
}
.header-inner {
	height: 64px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
}
.brand {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	font-weight: 700;
}
.brand-logo {
	height: 28px;
	width: auto;
	display: block;
}
.brand-mark {
	display: grid;
	place-items: center;
	width: 36px;
	height: 36px;
	border-radius: 10px;
	background: radial-gradient(120% 120% at 0% 0%, var(--primary) 0%, #8b5cf6 50%, #22d3ee 100%);
	box-shadow: 0 0 0 1px rgba(255,255,255,0.06), var(--shadow-1);
	transform: rotate(-10deg);
}
.brand-text { letter-spacing: 0.2px; }
.nav {
	display: none;
	gap: 16px;
}
.nav a {
	color: var(--muted);
	padding: 8px 10px;
	border-radius: 8px;
}
.nav a:hover { color: var(--text); background: rgba(255,255,255,0.03); }

/* Buttons */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	padding: 12px 18px;
	border-radius: 12px;
	border: 1px solid rgba(255,255,255,0.08);
	background: rgba(255,255,255,0.03);
	color: var(--text);
	transition: transform .12s ease, background .2s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn-sm { padding: 8px 12px; border-radius: 10px; }
.btn-lg { padding: 14px 22px; font-weight: 600; }

.btn-primary {
	background: linear-gradient(180deg, var(--primary) 0%, var(--primary-600) 100%);
	border-color: rgba(14,165,233,0.4);
	box-shadow: 0 10px 20px rgba(14,165,233,0.25), inset 0 0 0 1px rgba(255,255,255,0.08);
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost {
	background: transparent;
	border-color: rgba(255,255,255,0.12);
}
.btn-ghost:hover { background: rgba(255,255,255,0.06); }

/* Hero */
.hero {
	padding: 64px 0 24px;
}
.hero-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 24px;
	align-items: center;
}
.hero-copy h1 {
	font-size: clamp(2rem, 4.4vw, 3rem);
	line-height: 1.1;
	margin: 8px 0 12px;
}
.subtitle {
	color: var(--muted);
	font-size: 1.1rem;
	max-width: 58ch;
}
.hero-bullets {
	list-style: none;
	padding: 0;
	margin: 20px 0 0;
	display: grid;
	gap: 10px;
	max-width: 60ch;
}
.hero-bullets li {
	display: flex;
	align-items: center;
	gap: 10px;
	color: #d7dee9;
}
.icon {
	color: var(--accent);
	background: rgba(34, 211, 238, 0.08);
	border: 1px solid rgba(34, 211, 238, 0.2);
	border-radius: 10px;
	width: 32px;
	height: 32px;
	display: grid;
	place-items: center;
}
.cta-group { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
	margin-top: 22px;
	display: grid;
	grid-template-columns: repeat(3, minmax(0,1fr));
	gap: 10px;
}
.stat {
	background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
	border: 1px solid rgba(255,255,255,0.08);
	border-radius: 12px;
	padding: 14px 16px;
	box-shadow: var(--shadow-soft);
}
.stat-top { font-size: 1.1rem; font-weight: 700; }
.stat-sub { color: var(--muted); font-size: 0.95rem; }
.hero-media {
	position: relative;
}
.cover-image {
	border-radius: var(--radius);
	min-height: 340px;
	background:
		radial-gradient(60% 50% at 20% 0%, rgba(14,165,233,0.25) 0%, transparent 70%),
		radial-gradient(60% 50% at 80% 0%, rgba(34,211,238,0.22) 0%, transparent 70%),
		url('https://images.unsplash.com/photo-1516035069371-29a1b244cc32?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat,
		linear-gradient(180deg, #0a0f21, #0a0f21);
	box-shadow: var(--shadow-1), inset 0 0 0 1px rgba(255,255,255,0.05);
}
.media-badges {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: 12px;
}
.chip {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 8px 10px;
	border-radius: 999px;
	background: rgba(255,255,255,0.06);
	border: 1px solid rgba(255,255,255,0.1);
	color: #d7dee9;
}

/* Sections */
.section { padding: 56px 0; }
.section.alt {
	background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
	border-top: 1px solid rgba(255,255,255,0.06);
	border-bottom: 1px solid rgba(255,255,255,0.06);
}
.section-title {
	font-size: clamp(1.4rem, 3vw, 1.8rem);
	margin: 0 0 12px;
}
.section-lead {
	color: var(--muted);
	max-width: 72ch;
}

/* Features */
.features-grid {
	margin-top: 28px;
	display: grid;
	grid-template-columns: 1fr;
	gap: 14px;
}
.feature-card {
	padding: 18px;
	background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
	border: 1px solid rgba(255,255,255,0.08);
	border-radius: var(--radius);
	box-shadow: var(--shadow-soft);
	transition: transform .12s ease, background .2s ease, border-color .2s ease;
}
.feature-card:hover {
	transform: translateY(-2px);
	border-color: rgba(14,165,233,0.35);
}
.feature-icon {
	font-size: 22px;
	margin-bottom: 8px;
}
.feature-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.feature-card p { margin: 0; color: var(--muted); }

/* Modules */
.modules-list {
	list-style: none;
	padding: 0;
	margin: 18px 0 0;
	display: grid;
	gap: 12px;
}
.module-item {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 14px;
	align-items: start;
	padding: 16px;
	border-radius: var(--radius);
	background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
	border: 1px solid rgba(255,255,255,0.08);
}
.module-index {
	font-weight: 800;
	color: var(--primary);
	background: rgba(14,165,233,0.08);
	border: 1px solid rgba(14,165,233,0.22);
	border-radius: 12px;
	padding: 8px 12px;
}
.module-content h3 { margin: 0 0 6px; font-size: 1.05rem; }
.module-content p { margin: 0; color: var(--muted); }
.module-content .lessons {
	margin: 10px 0 0;
	padding-left: 18px;
	color: var(--muted);
	display: grid;
	gap: 6px;
}
.module-content .lessons li {
	line-height: 1.35;
}

/* Instructor */
.instructor-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 20px;
	align-items: center;
}
.instructor-photo {
	min-height: 220px;
	border-radius: var(--radius);
	background:
		radial-gradient(60% 50% at 20% 0%, rgba(139,92,246,0.25) 0%, transparent 70%),
		url('https://images.unsplash.com/photo-1514944152558-20b3fbe63037?q=80&w=1400&auto=format&fit=crop') center/cover no-repeat,
		linear-gradient(180deg, #0a0f21, #0a0f21);
	box-shadow: var(--shadow-1), inset 0 0 0 1px rgba(255,255,255,0.05);
}
.instructor-copy p { margin: 10px 0 0; }

/* Selling points */
.selling-points {
	display: grid;
	grid-template-columns: 1fr;
	gap: 14px;
}
.selling-card {
	padding: 18px;
	border-radius: var(--radius);
	background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
	border: 1px solid rgba(255,255,255,0.08);
	box-shadow: var(--shadow-soft);
}
.selling-icon { font-size: 22px; margin-bottom: 8px; }
.selling-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.selling-card p { margin: 0; color: var(--muted); }

/* Accordion */
.accordion { margin-top: 18px; display: grid; gap: 10px; }
.accordion-item {
	border: 1px solid rgba(255,255,255,0.08);
	border-radius: var(--radius);
	background: rgba(255,255,255,0.03);
	overflow: hidden;
}
.accordion-trigger {
	width: 100%;
	background: transparent;
	color: var(--text);
	text-align: left;
	padding: 14px 16px;
	border: 0;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	cursor: pointer;
}
.accordion-trigger:hover { background: rgba(255,255,255,0.04); }
.accordion-panel {
	padding: 0 16px 16px;
	color: var(--muted);
}
.chev { transition: transform .18s ease; }
.accordion-trigger[aria-expanded="true"] .chev { transform: rotate(180deg); }

/* Pricing */
.pricing {
	padding: 32px 0 64px;
}
.pricing-card {
	display: grid;
	grid-template-columns: 1fr;
	gap: 16px;
	align-items: center;
	background: linear-gradient(180deg, rgba(14,165,233,0.12), rgba(14,165,233,0.08));
	border: 1px solid rgba(14,165,233,0.35);
	border-radius: calc(var(--radius) + 2px);
	padding: 18px;
	box-shadow: 0 20px 50px rgba(14,165,233,0.12), inset 0 0 0 1px rgba(255,255,255,0.05);
}
.price-left h3 { margin: 0; }
.price-left .muted { margin: 6px 0 0; }
.price-right {
	text-align: left;
}
.price { font-size: 1.6rem; font-weight: 800; }
.installments { color: #d7dee9; margin: 2px 0 10px; }
.fine-print { color: var(--muted); margin: 6px 0 0; font-size: 0.9rem; }

/* Footer */
.site-footer {
	border-top: 1px solid rgba(255,255,255,0.06);
	background: rgba(255,255,255,0.02);
}
.footer-grid {
	padding: 24px 0;
	display: grid;
	grid-template-columns: 1fr;
	gap: 16px;
}
.foot-brand .brand { margin-bottom: 10px; }
.foot-col h4 { margin: 0 0 8px; font-size: 1rem; }
.foot-links {
	list-style: none;
	padding: 0;
	margin: 0;
	display: grid;
	gap: 6px;
}
.foot-links a {
	color: #d7dee9;
	background: rgba(255,255,255,0.03);
	border: 1px solid rgba(255,255,255,0.06);
	padding: 8px 10px;
	border-radius: 10px;
}
.foot-links a:hover { background: rgba(255,255,255,0.06); }
.socials {
	display: flex;
	gap: 10px;
	margin-top: 10px;
}
.socials a {
	width: 36px;
	height: 36px;
	border-radius: 999px;
	border: 1px solid rgba(255,255,255,0.1);
	background: rgba(255,255,255,0.03);
	display: grid;
	place-items: center;
	color: #d7dee9;
	transition: background .2s ease, border-color .2s ease, transform .12s ease;
}
.socials a:hover {
	background: rgba(255,255,255,0.06);
	border-color: rgba(14,165,233,0.4);
	transform: translateY(-1px);
}
.footer-bottom {
	border-top: 1px solid rgba(255,255,255,0.06);
	padding: 14px 0 26px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	flex-wrap: wrap;
}
.bottom-links {
	list-style: none;
	padding: 0;
	margin: 0;
	display: flex;
	gap: 10px;
}
.bottom-links a {
	color: #d7dee9;
	background: rgba(255,255,255,0.03);
	border: 1px solid rgba(255,255,255,0.06);
	padding: 6px 10px;
	border-radius: 999px;
}
.bottom-links a:hover { background: rgba(255,255,255,0.06); }
.link { color: var(--accent); text-decoration: underline; }

/* Reveal on scroll */
.reveal {
	opacity: 0;
	transform: translateY(8px);
	transition: opacity .5s ease, transform .5s ease;
}
.reveal.revealed {
	opacity: 1;
	transform: translateY(0);
}

/* Responsive */
@media (min-width: 768px) {
	.nav { display: flex; }
	.hero { padding: 96px 0 32px; }
	.hero-grid {
		grid-template-columns: 1.12fr .88fr;
		gap: 28px;
	}
	.features-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
	.instructor-grid {
		grid-template-columns: .85fr 1.15fr;
	}
	.selling-points {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
	.pricing-card {
		grid-template-columns: 1fr auto;
+		padding: 22px 24px;
	}
	.price-right { text-align: right; }
	.footer-grid {
		grid-template-columns: 1.2fr 1fr 1fr 1fr;
		gap: 24px;
		padding: 32px 0;
	}
}

@media (hover: hover) {
	.btn-primary:hover { transform: translateY(-1.5px) scale(1.01); }
	.feature-card:hover .feature-icon { filter: drop-shadow(0 6px 12px rgba(14,165,233,0.35)); }
}