/* ============================================
   Villalta Soluções - Homepage Styles
   Design System: Natural, Refinado, Humano
   ============================================ */

/* ------------------------------------------
   CSS Custom Properties (Design Tokens)
   ------------------------------------------ */
:root {
  /* Cores da marca */
  --color-terra: #C4A77D;
  --color-terra-light: #D9C4A3;
  --color-terra-dark: #9A8259;
  --color-forest: #2D5016;
  --color-forest-light: #4A7A2A;
  --color-forest-dark: #1F380F;
  --color-creme: #F5F1E8;
  --color-creme-dark: #EDE4D3;
  --color-charcoal: #2C2C2C;
  --color-charcoal-light: #4A4A4A;
  --color-terracotta: #D4754E;
  --color-sage: #87A878;
  
  /* Cores derivadas */
  --color-bg: #FAF8F3;
  --color-surface: rgba(255, 255, 255, 0.8);
  --color-surface-elevated: rgba(255, 255, 255, 0.95);
  --color-border: rgba(44, 44, 44, 0.08);
  --color-border-strong: rgba(44, 44, 44, 0.15);
  --color-text: var(--color-charcoal);
  --color-text-muted: rgba(44, 44, 44, 0.6);
  
  /* Tipografia */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Escala tipográfica */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.65vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.5rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 2rem + 3vw, 5rem);
  
  /* Espaçamento */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 4rem;
  --space-12: 6rem;
  --space-16: 8rem;
  --space-20: 12rem;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* Sombras sutis */
  --shadow-sm: 0 1px 2px rgba(44, 44, 44, 0.04);
  --shadow-md: 0 4px 12px rgba(44, 44, 44, 0.06);
  --shadow-lg: 0 12px 40px rgba(44, 44, 44, 0.08);
  --shadow-xl: 0 24px 80px rgba(44, 44, 44, 0.12);
  
  /* Transições */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Z-index scale */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
}

/* ------------------------------------------
   Reset e Base
   ------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: 
    radial-gradient(ellipse at 0% 0%, rgba(196, 167, 125, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 100%, rgba(45, 80, 22, 0.1) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
}

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

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

/* ------------------------------------------
   Tipografia
   ------------------------------------------ */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-forest);
}

/* ------------------------------------------
   Navegação Fixa
   ------------------------------------------ */
.nav-fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--space-4) var(--space-5);
  background: transparent;
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(-10px);
}

.nav-fixed.nav-visible {
  opacity: 1;
  transform: translateY(0);
  background: rgba(250, 248, 243, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.nav-logo img {
  height: 28px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-forest);
}

.nav-cta {
  background: var(--color-forest);
  color: var(--color-creme) !important;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-weight: 600 !important;
}

.nav-cta:hover {
  background: var(--color-forest-dark);
}

/* ------------------------------------------
   Hero Section
   ------------------------------------------ */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  padding: var(--space-20) var(--space-6) var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-pretitle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.line-accent {
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-terra);
}

.hero-pretitle p {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-terra-dark);
}

.hero-title {
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  color: var(--color-charcoal);
}

.title-highlight {
  color: var(--color-forest);
  font-style: italic;
  font-family: var(--font-display);
  font-weight: 400;
}

.hero-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-8);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-forest);
  color: var(--color-creme);
  box-shadow: var(--shadow-md);
}

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

.btn-primary svg {
  transition: transform var(--transition-fast);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-text {
  background: transparent;
  color: var(--color-forest);
  padding: var(--space-3) var(--space-4);
}

.btn-text:hover {
  color: var(--color-forest-dark);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* Trust indicators */
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.trust-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-forest);
  line-height: 1;
}

.trust-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 140px;
}

/* Elementos visuais orgânicos */
.hero-visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.organic-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.shape-1 {
  width: 600px;
  height: 600px;
  background: var(--color-terra);
  top: -200px;
  right: -200px;
}

.shape-2 {
  width: 400px;
  height: 400px;
  background: var(--color-sage);
  bottom: 10%;
  left: -100px;
  opacity: 0.2;
}

.shape-3 {
  width: 300px;
  height: 300px;
  background: var(--color-creme-dark);
  top: 40%;
  right: 10%;
  opacity: 0.3;
}

/* ------------------------------------------
   Seções Gerais
   ------------------------------------------ */
.section {
  padding: var(--space-16) var(--space-6);
}

.section-header {
  max-width: 640px;
  margin-bottom: var(--space-10);
}

.section-header--centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-terra-dark);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-2xl);
  line-height: 1.15;
  color: var(--color-charcoal);
}

/* ------------------------------------------
   Seção Serviços
   ------------------------------------------ */
.section-services {
  background: linear-gradient(180deg, transparent 0%, rgba(245, 241, 232, 0.5) 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-creme);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  color: var(--color-forest);
}

.service-title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-charcoal);
}

.service-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ------------------------------------------
   Seção Processo
   ------------------------------------------ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.step {
  text-align: center;
  padding: var(--space-6);
}

.step-number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  color: var(--color-terra);
  opacity: 0.6;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.step-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-charcoal);
}

.step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Conectores entre steps (desktop) */
@media (min-width: 769px) {
  .step-connector {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .step-connector::after {
    content: '';
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--color-terra) 0%, transparent 100%);
    opacity: 0.3;
  }
}

/* ------------------------------------------
   Seção Personas
   ------------------------------------------ */
.section-personas {
  background: linear-gradient(180deg, rgba(245, 241, 232, 0.5) 0%, transparent 100%);
}

.personas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 1000px;
  margin: 0 auto;
}

.persona-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.persona-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-terra-light);
}

.persona-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.persona-icon {
  font-size: 1.5rem;
}

.persona-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-charcoal);
}

.persona-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.persona-points {
  list-style: none;
  padding: 0;
}

.persona-points li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.persona-points li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-terra);
  font-weight: 600;
}

/* ------------------------------------------
   Seção Sobre
   ------------------------------------------ */
.section-about {
  background: var(--color-forest);
  color: var(--color-creme);
  position: relative;
  overflow: hidden;
}

.section-about .section-eyebrow {
  color: var(--color-terra-light);
}

.section-about .section-title {
  color: var(--color-creme);
}

.about-content {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 0.4fr;
  gap: var(--space-12);
  align-items: start;
}

.about-manifesto {
  margin-top: var(--space-6);
}

.about-manifesto p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: rgba(245, 241, 232, 0.85);
  margin-bottom: var(--space-4);
}

.manifesto-lead {
  font-family: var(--font-display);
  font-size: var(--text-xl) !important;
  font-style: italic;
  color: var(--color-creme) !important;
  margin-bottom: var(--space-6) !important;
}

.manifesto-highlight {
  font-size: var(--text-lg) !important;
  color: var(--color-creme) !important;
}

.manifesto-highlight strong {
  color: var(--color-terra-light);
  font-weight: 600;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(245, 241, 232, 0.15);
}

.value {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.value-icon {
  font-size: 1.25rem;
}

.value-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-creme);
}

.about-visual {
  position: relative;
  height: 100%;
  min-height: 400px;
}

.about-shape {
  position: absolute;
  width: 300px;
  height: 300px;
  background: var(--color-terra);
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.3;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* ------------------------------------------
   Seção CTA
   ------------------------------------------ */
.section-cta {
  text-align: center;
  padding: var(--space-20) var(--space-6);
}

.cta-content {
  max-width: 640px;
  margin: 0 auto;
}

.cta-title {
  font-size: var(--text-2xl);
  color: var(--color-charcoal);
  margin-bottom: var(--space-5);
}

.cta-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}

.cta-actions {
  margin-bottom: var(--space-6);
}

.cta-alternatives {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.cta-alternatives a {
  color: var(--color-forest);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cta-alternatives a:hover {
  color: var(--color-forest-dark);
}

/* ------------------------------------------
   Footer
   ------------------------------------------ */
.site-footer {
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-border);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
}

.footer-brand img {
  height: 24px;
  width: auto;
  margin-bottom: var(--space-2);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-meta {
  text-align: right;
}

.footer-meta p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin: 0;
}

.footer-meta p:last-child {
  color: var(--color-terra-dark);
  font-style: italic;
  font-family: var(--font-display);
  margin-top: var(--space-1);
}

/* ------------------------------------------
   Animações
   ------------------------------------------ */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation delays */
.service-card:nth-child(1) { transition-delay: 0ms; }
.service-card:nth-child(2) { transition-delay: 100ms; }
.service-card:nth-child(3) { transition-delay: 200ms; }
.service-card:nth-child(4) { transition-delay: 300ms; }

.step:nth-child(1) { transition-delay: 0ms; }
.step:nth-child(3) { transition-delay: 100ms; }
.step:nth-child(5) { transition-delay: 200ms; }
.step:nth-child(7) { transition-delay: 300ms; }

/* ------------------------------------------
   Responsividade
   ------------------------------------------ */
@media (max-width: 1024px) {
  .hero-trust {
    gap: var(--space-6);
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .step-connector {
    display: none;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .about-visual {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --space-20: 8rem;
    --space-16: 5rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .hero-title {
    font-size: clamp(2rem, 10vw, 3rem);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-trust {
    flex-direction: column;
    gap: var(--space-5);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .step {
    text-align: left;
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    padding: var(--space-4);
  }
  
  .step-number {
    font-size: var(--text-xl);
    margin-bottom: 0;
  }
  
  .personas-grid {
    grid-template-columns: 1fr;
  }
  
  .about-values {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-meta {
    text-align: center;
  }
  
  .organic-shape {
    display: none;
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-10) var(--space-4);
  }
  
  .hero {
    padding: var(--space-16) var(--space-4) var(--space-10);
  }
  
  .service-card,
  .persona-card {
    padding: var(--space-5);
  }
}

/* ------------------------------------------
   Acessibilidade
   ------------------------------------------ */
@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;
  }
  
  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-forest);
  outline-offset: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-forest);
  color: var(--color-creme);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 600;
  z-index: 9999;
}

.skip-link:focus {
  top: var(--space-4);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-text-muted: #4A4A4A;
    --color-border: rgba(44, 44, 44, 0.3);
  }
}