:root {
  --bg: #0c1117;
  --bg-elevated: #141b24;
  --surface: #1a2332;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8edf4;
  --text-muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.15);
  --linkedin: #0a66c2;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --font: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --max: 1100px;
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(12, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}
.logo:hover {
  color: var(--accent);
  text-decoration: none;
}

.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}
.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #2563eb;
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  background: var(--surface);
  color: var(--text);
}
.btn-linkedin {
  background: var(--linkedin);
  color: #fff;
}
.btn-linkedin:hover {
  background: #004182;
  color: #fff;
}
.btn-call {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-call:hover {
  background: var(--bg-elevated);
  color: var(--text);
  border-color: var(--accent);
}
.btn-whatsapp {
  background: #25d366;
  color: #fff;
}
.btn-whatsapp:hover {
  background: #1da851;
  color: #fff;
}

.hero {
  padding: 3rem 0 4rem;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-soft), transparent);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2.5rem;
  align-items: center;
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-photo {
    margin-inline: auto;
  }
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero .role {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  color: var(--text-muted);
  font-weight: 500;
}

.hero .lead {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-photo {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--surface);
  box-shadow: var(--shadow);
}

section {
  padding: 4rem 0;
}

#about,
#projects {
  background: var(--bg-elevated);
}

.section-title {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-head {
  margin: 0 0 2rem;
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.about-text {
  margin: 0;
  color: var(--text-muted);
  max-width: 65ch;
  font-size: 1.05rem;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.timeline-item {
  padding: 1.35rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.timeline-item h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.timeline-item .meta {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.timeline-item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.projects-intro {
  margin: -1rem 0 2rem;
  color: var(--text-muted);
  max-width: 55ch;
  font-size: 0.95rem;
}

.projects-intro a {
  font-weight: 600;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.project-card:hover {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.project-card a {
  color: inherit;
  text-decoration: none;
  display: block;
  height: 100%;
}
.project-card a:hover {
  text-decoration: none;
}

.project-thumb {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  width: 100%;
  background: var(--bg);
}

.project-body {
  padding: 1.1rem 1.25rem 1.25rem;
}

.project-body h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.project-body p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.project-cta {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
}

.edu-card {
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 480px;
}

.edu-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.edu-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

@media (max-width: 640px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-card {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  min-width: 0;
}

.contact-card > div {
  min-width: 0;
  flex: 1;
}

.contact-card .fa {
  color: var(--accent);
  margin-top: 0.15rem;
  width: 1.25rem;
  text-align: center;
}

.contact-card strong {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.contact-card span,
.contact-card a {
  font-size: 0.95rem;
  overflow-wrap: anywhere;
  word-break: break-word;
  display: inline-block;
  max-width: 100%;
}

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.site-footer a {
  color: var(--text-muted);
  font-weight: 500;
}

@media (max-width: 768px) {
  .nav-toggle-label {
    display: block;
  }

  .nav-links {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    padding: 1rem 1.5rem 1.5rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    gap: 0;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s, opacity 0.25s;
  }

  .nav-links li {
    width: 100%;
    border-bottom: 1px solid var(--border);
  }
  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 0;
  }

  .nav-toggle:checked ~ .nav-links {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
}