:root {
  --bg: #0b0e14;
  --bg-alt: #10141c;
  --card: #161b26;
  --border: #232938;
  --text: #e9edf5;
  --muted: #8b93a6;
  --accent: #4f8cff;
  --accent-2: #7c5cff;
  --shadow: rgba(15, 23, 42, 0.35);
  --button-bg: rgba(255,255,255,0.04);
}

body.light-theme {
  --bg: #f3f7ff;
  --bg-alt: #edf3ff;
  --card: #ffffff;
  --border: #dfe7f5;
  --text: #111827;
  --muted: #4b5563;
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --shadow: rgba(37, 99, 235, 0.12);
  --button-bg: rgba(37, 99, 235, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  transition: background 0.2s ease, color 0.2s ease;
  color-scheme: dark;
}

body.light-theme { color-scheme: light; }

a { color: inherit; text-decoration: none; }

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.8rem;
  font-weight: 600;
}

h2 { font-size: 2.2rem; margin: 0.4rem 0 2rem; }

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 5%;
  position: sticky;
  top: 0;
  background: rgba(11,14,20,0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
body.light-theme .navbar {
  background: rgba(243,247,255,0.82);
}
.navbar .logo {
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--accent);
}
.navbar nav { display: flex; gap: 1.8rem; }
.navbar nav a { color: var(--muted); font-weight: 500; }
.navbar nav a:hover { color: var(--text); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: var(--button-bg);
  color: var(--text);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.theme-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.theme-icon { font-size: 1.1rem; }

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 8px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
}
.btn-outline {
  border-color: var(--border);
  color: var(--text);
}

/* Hero */
.hero {
  text-align: center;
  padding: 5rem 5% 3rem;
  max-width: 800px;
  margin: 0 auto;
}
.badge {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.hero h1 {
  font-size: 3.2rem;
  background: linear-gradient(135deg, #fff, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub { color: var(--muted); margin: 1.2rem auto; max-width: 550px; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; margin: 1.5rem 0; }
.socials { display: flex; gap: 1rem; justify-content: center; margin: 1.5rem 0; flex-wrap: wrap; }
.socials a {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--button-bg);
  border: 1px solid var(--border);
  color: var(--muted);
  transition: all 0.2s ease;
  box-shadow: 0 6px 18px var(--shadow);
}
.socials a svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}
.socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(79, 140, 255, 0.18);
}

.hero-photo {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 2rem auto 0;
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--accent);
}
.hero-photo .stat {
  position: absolute;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem 0.9rem;
  text-align: center;
  font-size: 0.75rem;
}
.hero-photo .stat strong { display: block; font-size: 1.1rem; color: var(--accent); }
.hero-photo .stat:nth-of-type(1) { top: -10px; left: -50px; }
.hero-photo .stat:nth-of-type(2) { bottom: -10px; right: -50px; }

/* Sections */
section { padding: 4rem 5%; max-width: 1100px; margin: 0 auto; }
.about, .contact { max-width: 800px; text-align: left; }
.about p, .contact-sub { color: var(--muted); margin-bottom: 1rem; }

.tags { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1.5rem 0; }
.tags span {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--accent);
}
.tags.small span { font-size: 0.75rem; padding: 0.3rem 0.7rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
  margin-top: 2rem;
}
.stats-grid strong { display: block; font-size: 1.6rem; color: var(--accent); }
.stats-grid span { color: var(--muted); font-size: 0.85rem; }

/* Skills */
.skills { text-align: left; }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
  margin-bottom: 2rem;
}
.skill-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.2s, border-color 0.2s;
}
.skill-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.skill-card h3 { color: var(--accent); margin-bottom: 0.6rem; }
.skill-card p { color: var(--muted); font-size: 0.9rem; }

/* Projects */
.projects { text-align: left; }
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s;
}
.project-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.project-card img { width: 100%; height: 170px; object-fit: cover; }
.project-card .project-tag {
  display: inline-block;
  margin: 1rem 1rem 0;
  font-size: 0.7rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.project-card h3 { margin: 0.4rem 1rem 0.5rem; }
.project-card p { color: var(--muted); font-size: 0.88rem; margin: 0 1rem 0.8rem; }
.project-card .tags { margin: 0 1rem 1rem; }
.project-links { display: flex; gap: 1rem; margin: 0 1rem 1.2rem; }
.project-links a { color: var(--accent); font-weight: 600; font-size: 0.85rem; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 2.5rem;
  margin-top: 2rem;
}
.contact-info { display: flex; flex-direction: column; gap: 0.8rem; }
.contact-info a, .contact-info p { color: var(--muted); }
.contact-info a:hover { color: var(--accent); }
.contact-info .socials { justify-content: flex-start; margin-top: 1rem; }

#contact-form { display: flex; flex-direction: column; gap: 1rem; }
#contact-form input, #contact-form textarea {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  color: var(--text);
  font-family: inherit;
}
#contact-form button { align-self: flex-start; }
#form-status { color: var(--accent); font-size: 0.85rem; min-height: 1.2em; }

/* Footer */
footer {
  text-align: center;
  padding: 2.5rem 5%;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}
footer .logo { display: block; color: var(--accent); font-weight: 800; margin-bottom: 0.5rem; }
footer .built-by { margin-top: 0.3rem; }

.floating-email,
.floating-whatsapp {
  position: fixed;
  right: 20px;
  width: 58px;
  height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 10px 24px rgba(79, 140, 255, 0.35);
  z-index: 50;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.floating-email {
  bottom: 92px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.floating-whatsapp {
  bottom: 20px;
  background: linear-gradient(135deg, #25d366, #128c7e);
}
.floating-email:hover,
.floating-whatsapp:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 28px rgba(79, 140, 255, 0.42);
}
.floating-email svg,
.floating-whatsapp svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar {
    flex-wrap: wrap;
    gap: 0.8rem;
  }
  .navbar nav {
    display: none;
  }
  .nav-actions {
    margin-left: auto;
  }
  .btn {
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }
  .hero {
    padding-top: 3.5rem;
  }
  .hero h1 { font-size: 2.2rem; }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-photo {
    width: 180px;
    height: 180px;
  }
  .hero-photo .stat:nth-of-type(1) { left: -10px; }
  .hero-photo .stat:nth-of-type(2) { right: -10px; }
}

@media (max-width: 480px) {
  .navbar {
    padding: 1rem 1rem;
  }
  .nav-actions {
    width: 100%;
    justify-content: space-between;
  }
  .theme-toggle {
    width: 38px;
    height: 38px;
  }
  .socials a {
    width: 42px;
    height: 42px;
  }
  .floating-email,
  .floating-whatsapp {
    width: 52px;
    height: 52px;
    right: 16px;
  }
  .floating-email { bottom: 86px; }
  .floating-whatsapp { bottom: 16px; }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .hero-sub,
  .contact-sub,
  .about p,
  .skill-card p,
  .project-card p {
    font-size: 0.95rem;
  }
}