/* ============================================
   Variables CSS
   ============================================ */
:root {
	--color-bg: #020617;
	--color-bg-secondary: #0F172A;
	--color-primary: #7C3AED;
	--color-primary-hover: #6D28D9;
	--color-secondary: #22D3EE;
	--color-text: #E5E7EB;
	--color-text-muted: #9CA3AF;
	--color-card-bg: #1E293B;
	--color-card-border: #334155;
	--max-width: 1100px;
	--spacing-xs: 0.5rem;
	--spacing-sm: 1rem;
	--spacing-md: 2rem;
	--spacing-lg: 4rem;
	--spacing-xl: 6rem;
	--border-radius: 12px;
	--transition: all 0.2s ease-out;
}

/* ============================================
   Base / Reset
   ============================================ */
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	background-color: var(--color-bg);
	color: var(--color-text);
	line-height: 1.6;
	font-size: 16px;
	overflow-x: hidden;
}

/* ============================================
   Layout
   ============================================ */
.container {
	max-width: var(--max-width);
	margin: 0 auto;
	padding: 0 var(--spacing-md);
}

section {
	padding: var(--spacing-xl) 0;
}

h1, h2, h3, h4 {
	font-weight: 700;
	line-height: 1.2;
	margin-bottom: var(--spacing-sm);
}

h1 {
	font-size: 3rem;
}

h2 {
	font-size: 2.5rem;
	color: var(--color-text);
	margin-bottom: var(--spacing-md);
	text-align: center;
}

h3 {
	font-size: 1.5rem;
	margin-bottom: var(--spacing-sm);
}

h4 {
	font-size: 1.25rem;
	margin-bottom: var(--spacing-xs);
}

p {
	margin-bottom: var(--spacing-sm);
	color: var(--color-text-muted);
}

a {
	text-decoration: none;
	color: inherit;
	transition: var(--transition);
}

ul {
	list-style: none;
}

/* ============================================
   Header / Navegación
   ============================================ */
header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	background-color: rgba(2, 6, 23, 0.8);
	backdrop-filter: blur(10px);
	z-index: 1000;
	padding: var(--spacing-sm) 0;
	transition: var(--transition);
}

header.scrolled {
	background-color: rgba(2, 6, 23, 0.95);
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.nav-wrapper {
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.logo {
	font-size: 1.25rem;
	font-weight: 700;
	color: var(--color-text);
	transition: var(--transition);
}

.logo:hover {
	color: var(--color-primary);
}

.nav-menu {
	display: flex;
	gap: var(--spacing-md);
	align-items: center;
}

.nav-menu li a {
	color: var(--color-text-muted);
	font-weight: 500;
	font-size: 0.95rem;
	padding: var(--spacing-xs) var(--spacing-sm);
	border-radius: 6px;
	transition: var(--transition);
}

.nav-menu li a:hover {
	color: var(--color-text);
	background-color: rgba(124, 58, 237, 0.1);
}

/* ============================================
   Hero
   ============================================ */
.hero {
	min-height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
	position: relative;
	overflow: hidden;
	padding-top: 80px;
}

.hero::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: radial-gradient(circle at 30% 50%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
				radial-gradient(circle at 70% 80%, rgba(34, 211, 238, 0.1) 0%, transparent 50%);
	pointer-events: none;
}

.hero-content {
	text-align: center;
	max-width: 800px;
	position: relative;
	z-index: 1;
}

.hero h1 {
	font-size: 3.5rem;
	margin-bottom: var(--spacing-md);
	background: linear-gradient(135deg, var(--color-text) 0%, var(--color-secondary) 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.hero-subtitle {
	font-size: 1.25rem;
	color: var(--color-text-muted);
	margin-bottom: var(--spacing-lg);
	line-height: 1.8;
}

/* ============================================
   Botones
   ============================================ */
.btn {
	display: inline-block;
	padding: 1rem 2rem;
	border-radius: var(--border-radius);
	font-weight: 600;
	font-size: 1rem;
	cursor: pointer;
	transition: var(--transition);
	border: none;
	text-align: center;
}

.btn-primary {
	background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
	color: white;
	box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
}

.btn-primary:hover {
	transform: translateY(-2px);
	box-shadow: 0 6px 20px rgba(124, 58, 237, 0.6);
}

/* ============================================
   Secciones
   ============================================ */
.section-subtitle {
	text-align: center;
	font-size: 1.1rem;
	color: var(--color-text-muted);
	margin-bottom: var(--spacing-lg);
	max-width: 600px;
	margin-left: auto;
	margin-right: auto;
}

/* Servicios */
.servicios {
	background-color: var(--color-bg-secondary);
}

/* Experiencia */
.experiencia {
	background-color: var(--color-bg);
}

/* Proyectos */
.proyectos {
	background-color: var(--color-bg-secondary);
}

/* Contacto */
.contacto {
	background-color: var(--color-bg);
}

/* ============================================
   Cards / Tarjetas
   ============================================ */
.cards-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: var(--spacing-md);
	margin-top: var(--spacing-lg);
}

.card {
	background-color: var(--color-card-bg);
	border: 1px solid var(--color-card-border);
	border-radius: var(--border-radius);
	padding: var(--spacing-md);
	transition: var(--transition);
}

.card:hover {
	transform: translateY(-4px);
	border-color: var(--color-primary);
	box-shadow: 0 8px 24px rgba(124, 58, 237, 0.2);
}

.card-icon {
	font-size: 2.5rem;
	margin-bottom: var(--spacing-sm);
}

.card h3 {
	color: var(--color-text);
	margin-bottom: var(--spacing-sm);
}

.card ul {
	margin-top: var(--spacing-sm);
}

.card ul li {
	color: var(--color-text-muted);
	padding: var(--spacing-xs) 0;
	padding-left: 1.5rem;
	position: relative;
}

.card ul li::before {
	content: '→';
	position: absolute;
	left: 0;
	color: var(--color-primary);
	font-weight: bold;
}

.project-card {
	display: flex;
	flex-direction: column;
}

.card-link {
	color: var(--color-secondary);
	font-weight: 600;
	margin-top: auto;
	padding-top: var(--spacing-sm);
	display: inline-block;
}

.card-link:hover {
	color: var(--color-primary);
	transform: translateX(4px);
}

/* ============================================
   Experiencia & Stack
   ============================================ */
.experiencia-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: var(--spacing-lg);
	margin-top: var(--spacing-lg);
}

.experiencia-col h3 {
	color: var(--color-text);
	margin-bottom: var(--spacing-md);
	font-size: 1.75rem;
}

.experience-list {
	margin-top: var(--spacing-sm);
}

.experience-list li {
	color: var(--color-text-muted);
	padding: var(--spacing-sm) 0;
	padding-left: 1.5rem;
	position: relative;
	line-height: 1.8;
}

.experience-list li::before {
	content: '✓';
	position: absolute;
	left: 0;
	color: var(--color-secondary);
	font-weight: bold;
	font-size: 1.2rem;
}

.stack-categories {
	display: grid;
	gap: var(--spacing-md);
}

.stack-category {
	background-color: var(--color-card-bg);
	border: 1px solid var(--color-card-border);
	border-radius: var(--border-radius);
	padding: var(--spacing-md);
}

.stack-category h4 {
	color: var(--color-primary);
	margin-bottom: var(--spacing-sm);
}

.stack-category ul {
	display: flex;
	flex-wrap: wrap;
	gap: var(--spacing-xs);
}

.stack-category ul li {
	background-color: var(--color-bg);
	border: 1px solid var(--color-card-border);
	border-radius: 6px;
	padding: 0.4rem 0.8rem;
	color: var(--color-text);
	font-size: 0.9rem;
	font-weight: 500;
}

/* ============================================
   Contacto
   ============================================ */
.contact-links {
	display: flex;
	justify-content: center;
	gap: var(--spacing-md);
	flex-wrap: wrap;
	margin-top: var(--spacing-lg);
}

.contact-link {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--spacing-xs);
	padding: var(--spacing-md);
	background-color: var(--color-card-bg);
	border: 1px solid var(--color-card-border);
	border-radius: var(--border-radius);
	min-width: 150px;
	transition: var(--transition);
}

.contact-link:hover {
	transform: translateY(-4px);
	border-color: var(--color-primary);
	box-shadow: 0 8px 24px rgba(124, 58, 237, 0.2);
}

.contact-icon {
	font-size: 2rem;
}

.contact-link span:last-child {
	color: var(--color-text);
	font-weight: 600;
}

/* ============================================
   Footer
   ============================================ */
footer {
	background-color: var(--color-bg-secondary);
	padding: var(--spacing-md) 0;
	text-align: center;
	border-top: 1px solid var(--color-card-border);
}

footer p {
	color: var(--color-text-muted);
	font-size: 0.9rem;
}

/* ============================================
   Responsividad
   ============================================ */
@media (max-width: 768px) {
	:root {
		--spacing-lg: 3rem;
		--spacing-xl: 4rem;
	}

	h1 {
		font-size: 2rem;
	}

	h2 {
		font-size: 2rem;
	}

	.hero h1 {
		font-size: 2.5rem;
	}

	.hero-subtitle {
		font-size: 1.1rem;
	}

	.nav-menu {
		gap: var(--spacing-sm);
	}

	.nav-menu li a {
		font-size: 0.85rem;
		padding: var(--spacing-xs);
	}

	.cards-grid {
		grid-template-columns: 1fr;
		gap: var(--spacing-sm);
	}

	.experiencia-grid {
		grid-template-columns: 1fr;
		gap: var(--spacing-md);
	}

	.contact-links {
		flex-direction: column;
		align-items: stretch;
	}

	.contact-link {
		min-width: auto;
	}
}

@media (max-width: 480px) {
	.container {
		padding: 0 var(--spacing-sm);
	}

	.hero h1 {
		font-size: 2rem;
	}

	.hero-subtitle {
		font-size: 1rem;
	}

	.logo {
		font-size: 1rem;
	}

	.nav-menu {
		gap: var(--spacing-xs);
	}

	.nav-menu li a {
		font-size: 0.8rem;
	}
}