/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

/* ===== VARIABLES ===== */
:root {
  /* Colors - PERSONALIZE ESTAS CORES conforme sua identidade visual */
  --primary-color: #2563eb; /* Azul principal */
  --primary-dark: #1d4ed8; /* Azul escuro */
  --secondary-color: #64748b; /* Cinza secundário */
  --accent-color: #10b981; /* Verde para destaques */
  --text-color: #1f2937; /* Texto principal */
  --text-light: #6b7280; /* Texto secundário */
  --bg-color: #ffffff; /* Fundo principal */
  --bg-light: #f8fafc; /* Fundo claro */
  --border-color: #e5e7eb; /* Bordas */
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Layout */
  --container-max-width: 1200px;
  --header-height: 70px;

  /* Transitions */
  --transition: all 0.3s ease;
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: var(--spacing-sm);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  min-width: 140px;
}

.btn--primary {
  background-color: var(--primary-color);
  color: white;
}

.btn--primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn--secondary:hover {
  background-color: var(--primary-color);
  color: white;
}

.btn--whatsapp {
  background-color: #25d366;
  color: white;
}

.btn--whatsapp:hover {
  background-color: #128c7e;
}

.btn--full {
  width: 100%;
}

/* ===== HEADER & NAVIGATION ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: var(--transition);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav__logo-img {
  height: 40px;
  width: auto;
}

.nav__logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
}

.nav__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav__link {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav__link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

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

.nav__toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.nav__toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text-color);
  transition: var(--transition);
}

.nav__close {
  display: none;
  font-size: 2rem;
  cursor: pointer;
  position: absolute;
  top: 1rem;
  right: 1rem;
}

/* ===== HERO SECTION ===== */
.hero {
  padding-top: calc(var(--header-height) + var(--spacing-2xl));
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
}

.hero__title-highlight {
  color: var(--primary-color);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero__image {
  text-align: center;
}

.hero__img {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
}

/* ===== ABOUT SECTION ===== */
.about {
  background-color: var(--bg-light);
}

.about__container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.about__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
}

.about__description {
  font-size: var(--font-size-base);
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.about__stat {
  text-align: center;
  padding: var(--spacing-md);
  background-color: white;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.about__stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
}

.about__stat-text {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.about__img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
}

/* ===== SERVICES SECTION ===== */
.services__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.service__card {
  background-color: white;
  padding: var(--spacing-xl);
  border-radius: 16px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.service__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.service__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.service__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
}

.service__description {
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== PORTFOLIO SECTION ===== */
.portfolio {
  background-color: var(--bg-light);
}

.portfolio__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.portfolio__card {
  background-color: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.portfolio__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.portfolio__image {
  position: relative;
  overflow: hidden;
}

.portfolio__img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition);
}

.portfolio__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(37, 99, 235, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.portfolio__card:hover .portfolio__overlay {
  opacity: 1;
}

.portfolio__card:hover .portfolio__img {
  transform: scale(1.1);
}

.portfolio__link {
  color: white;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 24px;
  border: 2px solid white;
  border-radius: 8px;
  transition: var(--transition);
}

.portfolio__link:hover {
  background-color: white;
  color: var(--primary-color);
}

.portfolio__content {
  padding: var(--spacing-lg);
}

.portfolio__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-color);
}

.portfolio__description {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.portfolio__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.portfolio__tag {
  background-color: var(--bg-light);
  color: var(--primary-color);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-xl);
}

.testimonial__card {
  background-color: white;
  padding: var(--spacing-xl);
  border-radius: 16px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary-color);
}

.testimonial__text {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
  font-style: italic;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.testimonial__img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial__name {
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 4px;
}

.testimonial__position {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

/* ===== PROCESS SECTION ===== */
.process {
  background-color: var(--bg-light);
}

.process__container {
  display: grid;
  gap: var(--spacing-xl);
}

.process__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-lg);
  align-items: start;
  padding: var(--spacing-lg);
  background-color: white;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.process__number {
  width: 60px;
  height: 60px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  flex-shrink: 0;
}

.process__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-color);
}

.process__description {
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== TECHNOLOGIES SECTION ===== */
.technologies__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.tech__category {
  background-color: white;
  padding: var(--spacing-xl);
  border-radius: 16px;
  box-shadow: var(--shadow);
  text-align: center;
}

.tech__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--text-color);
}

.tech__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.tech__item {
  background-color: var(--bg-light);
  color: var(--primary-color);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--border-color);
}

/* ===== CONTACT SECTION ===== */
.contact {
  background-color: var(--bg-light);
}

.contact__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.contact__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
}

.contact__description {
  color: var(--text-light);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.contact__details {
  display: grid;
  gap: var(--spacing-lg);
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.contact__icon {
  font-size: 1.5rem;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__detail h4 {
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 4px;
}

.contact__detail a {
  color: var(--primary-color);
  text-decoration: none;
}

.contact__detail a:hover {
  text-decoration: underline;
}

.contact__form {
  background-color: white;
  padding: var(--spacing-xl);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.form__group {
  margin-bottom: var(--spacing-lg);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: var(--transition);
  background-color: var(--bg-color);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.contact__cta {
  text-align: center;
  padding: var(--spacing-xl);
  background-color: white;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.contact__cta p {
  margin-bottom: var(--spacing-md);
  color: var(--text-light);
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--text-color);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.footer__description {
  color: #d1d5db;
  line-height: 1.6;
}

.footer__subtitle {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer__list {
  list-style: none;
}

.footer__list li {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: #d1d5db;
  text-decoration: none;
  transition: var(--transition);
}

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

.footer__social-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.footer__social-link {
  color: #d1d5db;
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid #374151;
  border-radius: 8px;
  transition: var(--transition);
}

.footer__social-link:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.footer__bottom {
  border-top: 1px solid #374151;
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer__copy {
  color: #9ca3af;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet */
@media screen and (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: white;
    flex-direction: column;
    justify-content: center;
    transition: var(--transition);
    z-index: 1001;
  }

  .nav__menu.show-menu {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: var(--spacing-xl);
    text-align: center;
  }

  .nav__link {
    font-size: var(--font-size-lg);
  }

  .nav__close {
    display: block;
  }

  .nav__toggle {
    display: flex;
  }

  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-lg);
  }

  .hero__content {
    order: 2;
  }

  .hero__image {
    order: 1;
  }

  .about__container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about__stats {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: var(--spacing-lg) auto 0;
  }

  .contact__container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .footer__content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-lg);
  }

  .process__step {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-md);
  }

  .hero__buttons {
    justify-content: center;
  }
}

/* Mobile */
@media screen and (max-width: 480px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .hero__buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .services__container,
  .portfolio__container,
  .testimonials__container {
    grid-template-columns: 1fr;
  }

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

  .tech__items {
    justify-content: flex-start;
  }

  .footer__social-links {
    justify-content: center;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__content,
.hero__image {
  animation: fadeInUp 0.8s ease-out;
}

.hero__image {
  animation-delay: 0.2s;
}

/* ===== SCROLL ANIMATIONS ===== */
.section {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.section.animate {
  opacity: 1;
  transform: translateY(0);
}

/* ===== LOADING STATES ===== */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form__input:invalid {
  border-color: #ef4444;
}

.form__input:valid {
  border-color: var(--accent-color);
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.nav__link:focus,
.form__input:focus,
.form__textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  }
}