/**
 * @fileoverview Estilos do Portfólio - Fábio Andrade
 * @description Tema claro profissional, responsivo e acessível
 * @author Fábio Andrade
 * @version 2.0.0
 *
 * Estrutura:
 * 1. Variáveis CSS
 * 2. Reset e Base
 * 3. Utilitários
 * 4. Header
 * 5. Hero Section
 * 6. Seções Gerais
 * 7. Sobre
 * 8. Habilidades
 * 9. Projetos
 * 10. Certificações
 * 11. Formação
 * 12. Footer
 * 13. Responsividade
 */

/* =============================================================================
   1. VARIÁVEIS CSS
   ============================================================================= */
:root {
  /* Cores principais */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  
  /* Cores de fundo */
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #f1f5f9;
  
  /* Cores de texto */
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-muted: #94a3b8;
  
  /* Cores de destaque */
  --color-accent: #0ea5e9;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  
  /* Cores de borda */
  --color-border: #e2e8f0;
  --color-border-dark: #cbd5e1;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Tipografia */
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: "Poppins", var(--font-primary);
  
  /* Espaçamentos */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Bordas */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transições */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

ul {
  list-style: none;
}

/* =============================================================================
   3. UTILITÁRIOS
   ============================================================================= */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.875rem 1.75rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn__icon {
  width: 20px;
  height: 20px;
}

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

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

.btn--secondary {
  background-color: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-border-dark);
}

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

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

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

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

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

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

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

.header__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

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

/* Mobile menu button */
.header__mobile-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.header__mobile-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-fast);
}

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

.header__mobile-btn--open span:nth-child(2) {
  opacity: 0;
}

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

/* =============================================================================
   5. HERO SECTION
   ============================================================================= */
.hero {
  padding-top: 120px;
  padding-bottom: var(--spacing-3xl);
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero__greeting {
  font-size: 1.125rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--color-text-light);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.hero__description {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
  max-width: 540px;
}

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

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

.hero__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

.hero__social-link:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
  transform: translateY(-2px);
}

.hero__social-link svg {
  width: 22px;
  height: 22px;
}

.hero__image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

/* =============================================================================
   6. SEÇÕES GERAIS
   ============================================================================= */
.section {
  padding: var(--spacing-3xl) 0;
}

.section:nth-child(even) {
  background-color: var(--color-bg-alt);
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.section__subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

/* =============================================================================
   7. SOBRE
   ============================================================================= */
.sobre__content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-3xl);
  align-items: start;
}

.sobre__text {
  max-width: 700px;
}

.sobre__text p {
  font-size: 1.0625rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.sobre__text p:last-child {
  margin-bottom: 0;
}

.sobre__text strong {
  color: var(--color-text);
  font-weight: 600;
}

.sobre__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.highlight-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  min-width: 160px;
  box-shadow: var(--shadow-sm);
}

.highlight-card__number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.highlight-card__label {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* =============================================================================
   8. HABILIDADES
   ============================================================================= */
.habilidades__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.skill-category {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.skill-category__title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

.skill-category__icon {
  font-size: 1.5rem;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skill-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
}

.skill-item__name {
  color: var(--color-text);
  font-weight: 500;
}

.skill-item__level {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.skill-item--advanced .skill-item__level {
  background-color: #dcfce7;
  color: #166534;
}

.skill-item--intermediate .skill-item__level {
  background-color: #dbeafe;
  color: #1e40af;
}

.skill-item--basic .skill-item__level {
  background-color: #fef3c7;
  color: #92400e;
}

.skill-item--learning .skill-item__level {
  background-color: #f3e8ff;
  color: #7c3aed;
}

.habilidades__note {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-lg);
  background-color: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--color-border);
}

/* =============================================================================
   9. PROJETOS
   ============================================================================= */
.projetos__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.projeto-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.projeto-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.projeto-card__tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.projeto-card__date {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.projeto-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.projeto-card__description {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.projeto-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.projeto-card__tech li {
  font-size: 0.8125rem;
  padding: 4px 10px;
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  border-radius: var(--radius-md);
}

.projeto-card__results {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.projeto-card__links {
  display: flex;
  gap: var(--spacing-md);
}

.projeto-card__link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
}

.projeto-card__link:hover {
  text-decoration: underline;
}

.projetos__cta {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

/* =============================================================================
   10. CERTIFICAÇÕES
   ============================================================================= */
.certificacoes__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.cert-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.cert-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.cert-card__badge {
  width: 60px;
  height: 60px;
  object-fit: contain;
  flex-shrink: 0;
}

.cert-card__content {
  flex: 1;
}

.cert-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.cert-card__subtitle {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.cert-card__issuer {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* =============================================================================
   11. FORMAÇÃO
   ============================================================================= */
.formacao__timeline {
  max-width: 800px;
  margin: 0 auto;
}

.formacao-item {
  display: flex;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-xl);
  position: relative;
}

.formacao-item:last-child {
  padding-bottom: 0;
}

.formacao-item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 24px;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
}

.formacao-item:last-child::before {
  display: none;
}

.formacao-item__marker {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  border: 3px solid var(--color-border-dark);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.formacao-item--current .formacao-item__marker {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.formacao-item__content {
  flex: 1;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.formacao-item__status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-sm);
}

.formacao-item__status--done {
  background-color: var(--color-success);
}

.formacao-item__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.formacao-item__institution {
  font-size: 0.9375rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 4px;
}

.formacao-item__period {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.formacao-item__description {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

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

.footer__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.footer__info {
  text-align: center;
}

.footer__name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.footer__tagline {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

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

.footer__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-bg);
  transition: all var(--transition-fast);
}

.footer__social:hover {
  background-color: var(--color-primary);
  transform: translateY(-2px);
}

.footer__social svg {
  width: 22px;
  height: 22px;
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  width: 100%;
}

.footer__bottom p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.footer__ai-disclosure {
  font-size: 0.8125rem;
  font-style: italic;
  opacity: 0.7;
}

/* =============================================================================
   13. RESPONSIVIDADE
   ============================================================================= */

/* Tablets */
@media screen and (max-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }

  .hero__content {
    order: 2;
  }

  .hero__image-wrapper {
    order: 1;
  }

  .hero__description {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero__buttons {
    justify-content: center;
  }

  .hero__social {
    justify-content: center;
  }

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

  .sobre__highlights {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
  }

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

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

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

/* Mobile */
@media screen and (max-width: 768px) {
  :root {
    --container-padding: 1rem;
  }

  .header__nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .header__menu {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .header__link {
    font-size: 1.125rem;
    padding: var(--spacing-sm) 0;
  }

  .header__mobile-btn {
    display: flex;
  }

  .hero {
    padding-top: 100px;
  }

  .hero__buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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

  .sobre__highlights {
    flex-direction: column;
  }

  .highlight-card {
    width: 100%;
  }

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

  .projeto-card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .projeto-card__results {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .formacao-item {
    gap: var(--spacing-md);
  }

  .formacao-item__content {
    padding: var(--spacing-md);
  }
}

/* Mobile pequeno */
@media screen and (max-width: 480px) {
  .hero__title {
    font-size: 2rem;
  }

  .hero__image {
    max-width: 280px;
  }

  .section__title {
    font-size: 1.5rem;
  }

  .cert-card {
    flex-direction: column;
    text-align: center;
  }
}

/* Preferência por movimento reduzido */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}