/* ---------- DARK THEME ---------- */
:root, [data-theme="dark"] {
  --bg: #010409;
  --bg-card: #0d1117;
  --bg-card2: #161b22;
  --accent: #10b981;
  --accent-dim: rgba(16, 185, 129, 0.12);
  --accent-glow: rgba(16, 185, 129, 0.25);
  --text: #e6edf3;
  --text-muted: #8b949e;
  --border: #21262d;
  --border-hover: #30363d;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
  --nav-bg: rgba(1, 4, 9, 0.85);
}

/* ---------- LIGHT THEME ---------- */
[data-theme="light"] {
  --bg: #f6f8fa;
  --bg-card: #ffffff;
  --bg-card2: #f0f2f5;
  --accent: #0d9e6e;
  --accent-dim: rgba(13, 158, 110, 0.1);
  --accent-glow: rgba(13, 158, 110, 0.2);
  --text: #1c2128;
  --text-muted: #57606a;
  --border: #d0d7de;
  --border-hover: #b1bac4;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.12);
  --nav-bg: rgba(246, 248, 250, 0.88);
}

/* ---------- BASE ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  transition: background 0.3s ease, color 0.3s ease;
}

/* ---------- NAV ---------- */
nav {
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: 'Syne', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
}
nav ul {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}
nav ul a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: all 0.25s ease;
}
nav ul a:hover, nav ul a.active {
  color: var(--text);
  background: var(--bg-card2);
}
nav ul a.nav-cta {
  color: var(--accent);
  border: 1px solid var(--accent);
}
nav ul a.nav-cta:hover {
  background: var(--accent);
  color: #fff;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
}

/* ---------- HERO ---------- */
.hero {
  min-height: calc(100vh - 57px);
  display: flex;
  align-items: center;
  padding: 4rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}
.hero-greeting {
  font-size: 1rem;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.hero-text h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 1rem;
}
.role {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.value {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 2rem;
}
.hero-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.25s ease;
}
.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  background: transparent;
  color: var(--text);
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid var(--border-hover);
  transition: all 0.25s ease;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.hero-socials {
  display: flex;
  gap: 0.75rem;
}
.hero-socials a {
  color: var(--text-muted);
  font-size: 1.1rem;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}
.hero-socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}
.avatar-wrap {
  position: relative;
  width: 280px;
  height: 280px;
}
.avatar {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  object-fit: cover;
  border: 2px solid var(--border);
}
.avatar-ring {
  position: absolute;
  inset: -8px;
  border-radius: 30px;
  border: 2px solid var(--accent);
  opacity: 0.4;
}
.avatar-badge {
  position: absolute;
  bottom: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 0.78rem;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* ---------- MAIN ---------- */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}
section {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin-bottom: 0.5rem;
}
.section-sub {
  color: var(--text-muted);
}

/* ---------- SKILLS ---------- */
.skills-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.skill-group h4 {
  font-family: 'Syne', sans-serif;
  font-size: 0.85rem;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.skills span {
  padding: 0.3rem 0.85rem;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.skills span:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ---------- FILTROS ---------- */
.project-filters {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 0.45rem 1.1rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.25s ease;
}
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- PROJECT CARDS ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.project-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}
.project-icon {
  font-size: 1.4rem;
  color: var(--accent);
}
.project-links {
  display: flex;
  gap: 0.5rem;
}
.project-links a {
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  border: 1px solid var(--border);
  text-decoration: none;
}
.project-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}
.project-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.project-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  flex: 1;
  margin-bottom: 1.25rem;
}
.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tech-pills span {
  font-size: 0.75rem;
  padding: 0.2rem 0.65rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
}

/* ---------- TIMELINE ---------- */
.timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}
.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--accent);
}
.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}
.item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}
.item-header h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
}
.item-date {
  font-size: 0.8rem;
  color: var(--accent);
  white-space: nowrap;
}

/* ---------- CONTACTO ---------- */
#contacto { 
  text-align: center; 
  padding-bottom: 2rem;
}
.contacto-inner { 
  max-width: 560px; 
  margin: 0 auto; 
}
#contacto h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
}
.contacto-sub {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.contacto-socials {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}
.contacto-socials a {
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.contacto-socials a:hover { color: var(--accent); }
.btn-big { 
  padding: 0.9rem 2rem; 
  font-size: 1rem; 
  margin-bottom: 0;
}

/* ---------- FOOTER ---------- */
footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
  margin-top: 0;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  nav ul {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 57px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
  }
  nav ul.open { display: flex; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  .hero-image { order: -1; }
  .avatar-wrap { width: 200px; height: 200px; margin: 0 auto; }
  .hero-text h1 { font-size: 3rem; }
  .hero-links, .hero-socials { justify-content: center; }
  .skills-groups { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  footer { justify-content: center; text-align: center; }
}
@media (max-width: 480px) {
  main { padding: 0 1.25rem; }
  .skills-groups { grid-template-columns: 1fr; }
  .hero-text h1 { font-size: 2.5rem; }
  .timeline { padding-left: 1.5rem; }
  .timeline-dot { left: -1.5rem; }
  .hero-links { flex-direction: column; }
  .btn-primary, .btn-outline { justify-content: center; }
}