/* ========== 1. VARIÁVEIS CSS (Design Tokens) ========== */
:root {
  /* Cores - Apenas Preto e Branco */
  --color-primary: #000000;
  --color-secondary: #1a1a1a;
  --color-white: #ffffff;
  --color-gray-light: #f5f5f5;
  --color-gray-medium: #e8e8e8;
  --color-text: #1a1a1a;
  --color-text-light: #666666;
  
  /* Tipografia */
  --font-family: 'Roboto', sans-serif;
  
  /* Tamanhos de Fonte */
  --font-size-h1: 64px;
  --font-size-h2: 48px;
  --font-size-h3: 32px;
  --font-size-h4: 24px;
  --font-size-body: 18px;
  --font-size-small: 14px;
  
  /* Pesos de Fonte */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Espaçamentos */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  --spacing-section: 100px;
  
  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
  
  /* Transições */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

/* ========== 2. RESET E BASE ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* ========== 3. TIPOGRAFIA GLOBAL ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h4); }

p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
  color: var(--color-text-light);
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-text-light);
}

strong {
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

/* ========== 4. LAYOUT GLOBAL ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

/* ========== 5. COMPONENTES REUTILIZÁVEIS ========== */

/* Botões */
.btn {
  display: inline-block;
  padding: 16px 40px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

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

.btn--large {
  padding: 18px 50px;
  font-size: 16px;
}

/* ========== 6. HEADER / NAVEGAÇÃO ========== */
.header {
  background-color: var(--color-white);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-gray-medium);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header__logo {
  flex: 0 0 auto;
}

.logo {
  height: 150px;
  width: auto;
  display: block;
}

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

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  transition: color var(--transition-normal);
  font-size: 16px;
}

.nav-link:hover {
  color: var(--color-text-light);
}

/* ========== 7. HERO SECTION ========== */
.hero {
  background-color: var(--color-white);
  padding: var(--spacing-xxl) 0;
}

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

.hero__content {
  max-width: 600px;
}

.hero__title {
  font-size: var(--font-size-h1);
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
  color: var(--color-text);
}

.hero__subtitle {
  font-size: 20px;
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
  color: var(--color-text-light);
  font-weight: var(--font-weight-regular);
}

.hero__image {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero__photo {
  width: 100%;
  max-width: 450px;
  height: auto;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
}

/* ========== 8. SEÇÃO ABOUT ========== */
.about {
  background-color: var(--color-gray-light);
  padding: var(--spacing-section) 0;
}

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
  margin-top: var(--spacing-xl);
}

.about__text {
  max-width: 600px;
}

.about__intro {
  font-size: 18px;
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}

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

.about__subtitle {
  font-size: var(--font-size-h3);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.credentials-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.credentials-list li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-text-light);
  line-height: 1.8;
}

.credentials-list li:before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

.about__closing {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
}

.about__image {
  position: relative;
}

.about__photo {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
}

/* ========== 9. SEÇÃO SERVIÇOS ========== */
.services {
  background-color: var(--color-white);
  padding: var(--spacing-section) 0;
}

.section-title {
  font-size: var(--font-size-h2);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--color-text);
}

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

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-medium);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.service-card__title {
  font-size: var(--font-size-h3);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  font-weight: var(--font-weight-bold);
}

.service-card__for {
  font-size: 14px;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  font-weight: var(--font-weight-medium);
}

.service-card__list {
  list-style: none;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.service-card__list li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-text-light);
  font-size: 15px;
  line-height: 1.6;
}

.service-card__list li:before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

.service-card__result {
  font-size: 14px;
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  border-top: 1px solid var(--color-gray-medium);
  padding-top: var(--spacing-md);
}

/* ========== 10. SEÇÃO STATEMENT ========== */
.statement {
  background-color: var(--color-gray-light);
  padding: var(--spacing-section) 0;
}

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

.statement__text {
  max-width: 600px;
}

.statement__paragraph {
  font-size: 18px;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  font-weight: var(--font-weight-regular);
}

.statement__author {
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.statement__image {
  position: relative;
}

.statement__photo {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
}

/* ========== 11. GALERIA ========== */
.gallery {
  background-color: var(--color-white);
  padding: var(--spacing-section) 0;
}

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

.gallery__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.gallery__item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.gallery__image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.gallery__item:hover .gallery__image {
  transform: scale(1.05);
}

/* ========== 12. SEÇÃO CONTATO ========== */
.contact {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-section) 0;
  text-align: center;
}

.contact .section-title {
  color: var(--color-white);
}

.contact__subtitle {
  font-size: 24px;
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-medium);
  line-height: 1.6;
}

.contact__description {
  font-size: 18px;
  margin-bottom: var(--spacing-lg);
  opacity: 0.95;
  line-height: 1.8;
}

.contact__note {
  font-size: 14px;
  margin-top: var(--spacing-lg);
  opacity: 0.9;
}

.contact__info {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

.contact__item {
  text-align: center;
}

.contact__item strong {
  color: var(--color-white);
  display: block;
  margin-bottom: var(--spacing-sm);
  font-size: 14px;
}

.contact__item a {
  color: var(--color-white);
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  transition: opacity var(--transition-normal);
}

.contact__item a:hover {
  opacity: 0.8;
}

/* ========== 13. FOOTER ========== */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__column {
  flex: 1;
}

.footer__title {
  font-size: 16px;
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
}

.footer__list {
  list-style: none;
}

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

.footer__list a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-normal);
  font-size: 14px;
}

.footer__list a:hover {
  color: var(--color-white);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-small);
}

/* ========== 14. RESPONSIVIDADE (MEDIA QUERIES) ========== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
  :root {
    --font-size-h1: 48px;
    --font-size-h2: 36px;
    --font-size-h3: 28px;
    --spacing-section: 60px;
  }
  
  .hero .container,
  .about__content,
  .statement__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact__info {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
  :root {
    --font-size-h1: 32px;
    --font-size-h2: 28px;
    --font-size-h3: 22px;
    --font-size-body: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-section: 40px;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  section {
    padding: var(--spacing-section) 0;
  }
  
  .header .container {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .header__nav {
    gap: var(--spacing-lg);
  }
  
  .logo {
    height: 100px;
  }
  
  .hero .container,
  .about__content,
  .statement__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .hero__title {
    font-size: 32px;
  }
  
  .hero__subtitle {
    font-size: 16px;
  }
  
  .hero__photo,
  .about__photo,
  .statement__photo {
    max-width: 100%;
  }
  
  .services__grid {
    grid-template-columns: 1fr;
  }
  
  .gallery__grid {
    grid-template-columns: 1fr;
  }
  
  .gallery__image {
    height: 250px;
  }
  
  .footer__grid {
    grid-template-columns: 1fr;
  }
  
  .contact__info {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
  }
  
  .btn--large {
    padding: 16px 24px;
  }
}

/* ========== 15. ANIMAÇÕES ========== */

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* ========== 16. UTILITÁRIOS ========== */

.text-center {
  text-align: center;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden { display: none; }
.visible { display: block; }