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

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f7f7f8;
  --bg-card: #ffffff;
  --text-primary: #0a0a0a;
  --text-secondary: #555555;
  --text-muted: #888888;
  --border: #e5e5e7;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-subtle: rgba(37, 99, 235, 0.08);
  --accent-glow: rgba(37, 99, 235, 0.12);
  --nav-bg: rgba(255, 255, 255, 0.75);
  --nav-border: rgba(0, 0, 0, 0.06);
  --gradient-1: #2563eb;
  --gradient-2: #7c3aed;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
}

[data-theme="dark"] {
  --bg-primary: #050505;
  --bg-secondary: #0a0a0b;
  --bg-card: #121213;
  --text-primary: #ededee;
  --text-secondary: #88888d;
  --text-muted: #555559;
  --border: #1c1c1f;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-subtle: rgba(59, 130, 246, 0.08);
  --accent-glow: rgba(59, 130, 246, 0.12);
  --nav-bg: rgba(5, 5, 5, 0.75);
  --nav-border: rgba(255, 255, 255, 0.04);
  --gradient-1: #3b82f6;
  --gradient-2: #8b5cf6;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.4);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section__header {
  text-align: center;
  margin-bottom: 60px;
}

.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section__title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
}

.section__desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 500px;
  margin: 0 auto;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn--primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--nav-border);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav__logo-accent {
  color: var(--accent);
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s ease;
  border-radius: 1px;
}

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

.nav__link:hover::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.theme-toggle__icon {
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .theme-toggle__icon--sun {
  display: block;
}

[data-theme="dark"] .theme-toggle__icon--moon {
  display: none;
}

[data-theme="light"] .theme-toggle__icon--sun {
  display: none;
}

[data-theme="light"] .theme-toggle__icon--moon {
  display: block;
}

.nav__cta {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  will-change: transform;
}

.hero__orb--1 {
  width: 500px;
  height: 500px;
  background: var(--gradient-1);
  top: -10%;
  left: -5%;
  animation: orbFloat1 20s ease-in-out infinite;
}

.hero__orb--2 {
  width: 400px;
  height: 400px;
  background: var(--gradient-2);
  bottom: -10%;
  right: -5%;
  animation: orbFloat2 25s ease-in-out infinite;
}

.hero__orb--3 {
  width: 300px;
  height: 300px;
  background: var(--accent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: orbFloat3 18s ease-in-out infinite;
  opacity: 0.15;
}

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(100px, 80px) scale(1.1); }
  66% { transform: translate(-50px, 120px) scale(0.9); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-80px, -60px) scale(1.15); }
  66% { transform: translate(60px, -100px) scale(0.85); }
}

@keyframes orbFloat3 {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  33% { transform: translate(-40%, -60%) scale(1.2); }
  66% { transform: translate(-60%, -40%) scale(0.8); }
}

.hero__content {
  position: relative;
  max-width: 800px;
}

.hero__chip {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
  border: 1px solid var(--accent-glow);
}

.hero__title {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}

.about__image-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
}

.about__heading {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.about__text {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 12px;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.about__stat {
  padding: 20px;
  border-radius: var(--radius);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  text-align: center;
}

.about__stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.2;
}

.about__stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.project-card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-card__body {
  padding: 24px;
}

.project-card__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.project-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.project-card__links {
  display: flex;
  gap: 16px;
}

.project-card__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: opacity 0.2s;
}

.project-card__link:hover {
  opacity: 0.8;
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.skill-card__icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--accent-subtle);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.skill-card__icon svg {
  width: 20px;
  height: 20px;
}

.skill-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.skill-card__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-card__list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}

.skill-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact__form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.contact__input,
.contact__textarea {
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  outline: none;
}

.contact__input:focus,
.contact__textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.contact__textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__submit {
  align-self: flex-start;
}

.contact__submit svg {
  transition: transform 0.25s ease;
}

.contact__submit:hover svg {
  transform: translateX(3px);
}

.contact__info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact__info-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.contact__info-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.contact__info-details {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.contact__info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact__info-item svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.contact__whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.25s ease;
  width: 100%;
  justify-content: center;
}

.contact__whatsapp svg {
  width: 22px;
  height: 22px;
  color: #25D366;
}

.contact__whatsapp:hover {
  border-color: #25D366;
  color: #25D366;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

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

.footer__text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer__links {
  display: flex;
  gap: 20px;
}

.footer__link {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer__link:hover {
  color: var(--text-secondary);
}

@media (max-width: 968px) {
  .hero__title {
    font-size: 3rem;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about__image-img {
    max-width: 360px;
    margin: 0 auto;
  }

  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 16px 24px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .nav__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__link {
    padding: 12px 0;
    font-size: 1rem;
  }

  .nav__cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .section {
    padding: 60px 0;
  }

  .section__title {
    font-size: 2rem;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .hero__subtitle {
    font-size: 1.05rem;
  }

  .projects__grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .contact__form-row {
    grid-template-columns: 1fr;
  }

  .footer__container {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .skills__grid {
    grid-template-columns: 1fr;
  }
}