/* --- Variables --- */
:root {
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-accent: #0a66c2;
  --color-accent-hover: #004182;
  --color-border: #e8e6e3;
  --font-sans: "DM Sans", system-ui, -apple-system, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --radius: 0.5rem;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --max-width: 42rem;
}

/* --- Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 100;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: var(--space-sm);
}

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

/* --- Header & Nav --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 249, 247, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 56rem;
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
}

.nav-brand {
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.nav-brand:hover,
.nav-brand:focus-visible {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--color-accent);
}

/* --- Hero --- */
.hero {
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  text-align: center;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-photo {
  display: block;
  width: 10rem;
  height: 10rem;
  margin: 0 auto var(--space-md);
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 0 0 var(--space-xs);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero-tagline {
  margin: 0;
  font-size: 1.25rem;
  color: var(--color-text-muted);
}

/* --- Sections --- */
.section {
  padding: var(--space-lg) 0;
}

.section h2 {
  margin: 0 0 var(--space-md);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.about p {
  margin: 0 0 var(--space-sm);
  color: var(--color-text-muted);
}

.about p:last-child {
  margin-bottom: 0;
}

.connect {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.connect-lead {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
}

/* --- LinkedIn button --- */
.btn-linkedin {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  background: var(--color-accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: background-color 0.2s ease;
}

.btn-linkedin:hover,
.btn-linkedin:focus-visible {
  background: var(--color-accent-hover);
}

.btn-linkedin:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-icon {
  flex-shrink: 0;
}

/* --- Footer --- */
.site-footer {
  padding: var(--space-lg) 0;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.site-footer p {
  margin: 0;
}

/* --- Reveal animation --- */
.reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}