/* ============================================
   STUDIO JUNTOS - Premium Design System
   ============================================ */

/* CSS Variables */
:root {
  --color-primary: #2c3e50;
  --color-accent: #8b7355;
  --color-text: #1a1a1a;
  --color-text-light: #666;
  --color-bg: #ffffff;
  --color-bg-light: #f8f8f8;
  --color-bg-dark: #1a1a1a;
  --color-border: #e0e0e0;
  --color-success: #4a7c59;
  --color-error: #c94a4a;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  --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: 2rem;
  --font-size-4xl: 2.5rem;
  
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  
  --transition: 0.2s ease;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm);
  text-decoration: none;
  z-index: 1000;
}

.skip-link:focus {
  top: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-md);
}

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

a:hover,
a:focus {
  color: var(--color-primary);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Header */
header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--transition);
}

header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
}

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

nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

nav a {
  color: var(--color-text);
  font-weight: 400;
  text-decoration: none;
  padding: var(--spacing-xs) 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition);
}

nav a:hover,
nav a:focus,
nav a.active {
  border-bottom-color: var(--color-accent);
  color: var(--color-primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  color: var(--color-primary);
  padding: var(--spacing-xs);
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Main Content */
main {
  min-height: 60vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

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

/* Hero Section */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-lg);
  background: var(--color-bg-light);
}

.hero-content {
  max-width: 800px;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.hero p {
  font-size: var(--font-size-xl);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  z-index: 0;
}

.cta-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--color-primary);
  color: white;
}

.btn:hover,
.btn:focus {
  background: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

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

/* Cards */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.card-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
}

.card-title {
  margin-bottom: var(--spacing-sm);
}

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

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Trust Strip */
.trust-strip {
  background: var(--color-bg-light);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-strip ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  text-align: center;
}

.trust-strip li {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* Services */
.service-card {
  text-align: center;
}

.service-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-accent);
}

/* Process Steps */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.process-step {
  text-align: center;
  position: relative;
}

.process-number {
  display: inline-block;
  width: 50px;
  height: 50px;
  line-height: 50px;
  border-radius: 50%;
  background: var(--color-accent);
  color: white;
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

/* Projects */
.project-filters {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition);
  font-size: var(--font-size-sm);
}

.filter-btn:hover,
.filter-btn:focus,
.filter-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.filter-btn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.project-card {
  cursor: pointer;
}

/* Reviews */
.review-card {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.review-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.review-rating {
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: border-color var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(139, 115, 85, 0.1);
}

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

.form-error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  display: none;
}

.form-error.show {
  display: block;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-error);
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(201, 74, 74, 0.1);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.form-checkbox input {
  margin-top: 4px;
  flex-shrink: 0;
}

/* FAQ */
.faq-group {
  margin-bottom: var(--spacing-xl);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

.faq-question {
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.faq-question::after {
  content: '+';
  font-size: var(--font-size-xl);
  color: var(--color-accent);
  transition: transform var(--transition);
}

.faq-question.active::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding-top: 0;
}

.faq-answer.active {
  max-height: 1000px;
  padding-top: var(--spacing-md);
}

/* Tables */
.table-container {
  overflow-x: auto;
  margin: var(--spacing-xl) 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
}

th, td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-bg-light);
  font-weight: 600;
  color: var(--color-primary);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-bg-dark);
  color: white;
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: none;
}

.cookie-banner.show {
  display: block;
}

.cookie-banner-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.cookie-banner-text {
  flex: 1;
  min-width: 250px;
}

.cookie-banner-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.cookie-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid white;
  background: transparent;
  color: white;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition);
}

.cookie-btn:hover,
.cookie-btn:focus {
  background: white;
  color: var(--color-bg-dark);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 2000;
  padding: var(--spacing-lg);
  overflow-y: auto;
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  color: var(--color-text-light);
  padding: var(--spacing-xs);
}

.modal-close:hover,
.modal-close:focus {
  color: var(--color-primary);
}

/* Footer */
footer {
  background: var(--color-bg-dark);
  color: white;
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-section a:hover,
.footer-section a:focus {
  color: white;
  text-decoration: underline;
}

.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, 0.6);
  font-size: var(--font-size-sm);
}

/* Article Styles */
.article-header {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.article-meta {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
}

.article-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-xl) 0;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.article-content h2,
.article-content h3 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.article-content ul,
.article-content ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.article-content li {
  margin-bottom: var(--spacing-xs);
}

.table-of-contents {
  background: var(--color-bg-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-xl) 0;
}

.table-of-contents ul {
  list-style: none;
  margin-left: 0;
}

.table-of-contents a {
  color: var(--color-text);
  text-decoration: none;
}

.table-of-contents a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Search */
.search-box {
  width: 100%;
  max-width: 500px;
  margin: var(--spacing-xl) auto;
}

.search-results {
  margin-top: var(--spacing-lg);
}

.search-result-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.search-result-item a {
  color: var(--color-primary);
  font-weight: 500;
}

/* 404 Page */
.error-page {
  text-align: center;
  padding: var(--spacing-xxl) 0;
}

.error-page img {
  max-width: 500px;
  width: 100%;
  height: auto;
  margin: var(--spacing-xl) auto;
  border-radius: var(--border-radius-lg);
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  
  nav.active {
    display: block;
  }
  
  nav ul {
    flex-direction: column;
    padding: var(--spacing-md) var(--spacing-lg);
    gap: var(--spacing-sm);
  }
  
  .hero {
    min-height: 60vh;
  }
  
  .cta-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .cookie-banner-content {
    flex-direction: column;
    text-align: center;
  }
  
  .cookie-banner-actions {
    width: 100%;
    justify-content: center;
  }
  
  .cookie-btn {
    flex: 1;
    min-width: 100px;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .review-card {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-xxl: 3rem;
    --spacing-xl: 2rem;
  }
  
  .header-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
}