/* ========================================
   SEARCH PRO - Stylesheet Principal
   Versão: 1.0 | pt-PT | WCAG 2.1 AA
   ======================================== */

/* --- Variáveis CSS (Design System) --- */
:root {
  /* Cores */
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-secondary: #10b981;
  --color-secondary-hover: #059669;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-border-focus: #6366f1;
  
  /* Tipografia */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Espaçamento */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Bordas */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* 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);
  
  /* Transições */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
}

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

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

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

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

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

ul[role='list'], ol[role='list'] {
  list-style: none;
}

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

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --- Utilitários --- */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px) {
  .container { padding-inline: var(--space-6); }
}
@media (min-width: 1024px) {
  .container { padding-inline: var(--space-8); }
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Botões --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}
.btn-ghost:hover {
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.05);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

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

/* --- Cards --- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-normal);
}
.card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

/* --- Forms --- */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: border-color var(--transition-fast);
}
.input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.input-group {
  position: relative;
}
.input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}
.input-with-icon {
  padding-left: 2.5rem;
}

/* --- Navegação --- */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--text-xl);
}
.nav-logo-icon {
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
}
.nav-logo-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  color: white;
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .nav-links { display: flex; }
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--color-primary);
}

.nav-ctas {
  display: none;
  align-items: center;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .nav-ctas { display: flex; }
}

.nav-toggle {
  display: grid;
  place-items: center;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  cursor: pointer;
}
@media (min-width: 768px) {
  .nav-toggle { display: none; }
}

/* Mobile menu */
.mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), opacity var(--transition-normal);
  opacity: 0;
}
.mobile-menu.active {
  max-height: 500px;
  opacity: 1;
}
.mobile-menu-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.mobile-menu-link:hover {
  background: rgba(99, 102, 241, 0.05);
  color: var(--color-primary);
}

/* --- Hero Section --- */
.hero {
  padding: var(--space-20) 0 var(--space-16);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}
.hero-grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}
@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr 1fr; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid rgba(99, 102, 241, 0.2);
}
.hero-badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--color-secondary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 36rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-8);
}
.hero-avatars {
  display: flex;
}
.hero-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 2px solid var(--color-surface);
  margin-left: -0.5rem;
  background: var(--color-border);
}
.hero-avatar:first-child { margin-left: 0; }
.hero-trust-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Hero Mockup */
.hero-mockup {
  position: relative;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.mockup-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-xl);
}
.mockup-search {
  position: relative;
  margin-bottom: var(--space-4);
}
.mockup-input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-background);
  font-size: var(--text-sm);
}
.mockup-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  width: 1rem;
  height: 1rem;
}
.mockup-suggestions {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
}
.mockup-suggestion {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.mockup-suggestion:hover {
  background: var(--color-background);
}
.mockup-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.mockup-result {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}
.mockup-result-img {
  height: 3rem;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}
.mockup-result-title {
  height: 0.5rem;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  width: 75%;
  margin-bottom: var(--space-1);
}
.mockup-result-price {
  height: 0.4rem;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  width: 50%;
}
.mockup-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-secondary);
}

/* --- Social Proof --- */
.social-proof {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.social-proof-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  opacity: 0.7;
  margin-bottom: var(--space-12);
}
.social-proof-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  font-size: var(--text-sm);
}
.social-proof-logo-icon {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-weight: 700;
  color: white;
  font-size: var(--text-xs);
}
.social-proof-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 48rem;
  margin-inline: auto;
}
@media (min-width: 768px) {
  .social-proof-metrics { grid-template-columns: repeat(4, 1fr); }
}
.metric {
  text-align: center;
}
.metric-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
}
.metric-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- Features Grid --- */
.features {
  padding: var(--space-20) 0;
}
.features-header {
  text-align: center;
  max-width: 48rem;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}
.features-header h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.features-header p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}
.features-grid {
  display: grid;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .features-grid { grid-template-columns: repeat(3, 1fr); }
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-normal);
}
.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}
.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-4);
  transition: transform var(--transition-normal);
}
.feature-card:hover .feature-icon {
  transform: scale(1.1);
}
.feature-icon.primary { background: rgba(99, 102, 241, 0.1); color: var(--color-primary); }
.feature-icon.secondary { background: rgba(16, 185, 129, 0.1); color: var(--color-secondary); }
.feature-icon.purple { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.feature-icon.amber { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.feature-icon.rose { background: rgba(244, 63, 94, 0.1); color: #f43f5e; }
.feature-icon.cyan { background: rgba(6, 182, 212, 0.1); color: #06b6d4; }
.feature-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- How It Works --- */
.how-it-works {
  padding: var(--space-20) 0;
  background: var(--color-surface);
}
.how-header {
  text-align: center;
  max-width: 48rem;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}
.how-header h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.how-steps {
  display: grid;
  gap: var(--space-8);
  max-width: 48rem;
  margin-inline: auto;
}
@media (min-width: 768px) {
  .how-steps { grid-template-columns: repeat(3, 1fr); gap: var(--space-12); }
}
.how-step {
  text-align: center;
  position: relative;
}
.how-step-number {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  font-weight: 700;
  display: grid;
  place-items: center;
  margin-inline: auto;
  margin-bottom: var(--space-4);
}
.how-step h3 {
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.how-step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
@media (min-width: 768px) {
  .how-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 1.5rem;
    right: -50%;
    width: 100%;
    height: 2px;
    background: var(--color-border);
    z-index: -1;
  }
}

/* --- Testimonials --- */
.testimonials {
  padding: var(--space-20) 0;
}
.testimonials-header {
  text-align: center;
  max-width: 48rem;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}
.testimonials-grid {
  display: grid;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .testimonials-grid { grid-template-columns: repeat(3, 1fr); }
}
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}
.testimonial-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--color-border);
  margin-bottom: var(--space-4);
}
.testimonial-author {
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.testimonial-role {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.testimonial-quote {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.7;
}
.testimonial-store {
  display: inline-block;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
}

/* --- Pricing Teaser --- */
.pricing-teaser {
  padding: var(--space-16) 0;
  text-align: center;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(16, 185, 129, 0.05));
  border-radius: var(--radius-2xl);
  margin: var(--space-20) 0;
}
.pricing-teaser h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.pricing-teaser p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

/* --- Final CTA --- */
.final-cta {
  padding: var(--space-20) 0;
  text-align: center;
}
.final-cta h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}
.final-cta p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 36rem;
  margin-inline: auto;
}

/* --- Footer --- */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-8);
}
.footer-grid {
  display: grid;
  gap: var(--space-8);
}
@media (min-width: 768px) {
  .footer-grid { 
    grid-template-columns: 2fr 1fr 1fr 1fr;
    align-items: start;
  }
}
.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}
.footer-column h4 {
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-column a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer-column a:hover {
  color: var(--color-primary);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-8);
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-legal {
  display: flex;
  gap: var(--space-6);
}
.footer-legal a:hover {
  color: var(--color-primary);
}

/* --- Cookie Banner --- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-toast);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}
.cookie-content {
  max-width: 1280px;
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.cookie-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 48rem;
}
.cookie-actions {
  display: flex;
  gap: var(--space-3);
}

/* --- Code Blocks --- */
.code-block {
  background: #1e293b;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: #e2e8f0;
  overflow-x: auto;
  margin: var(--space-4) 0;
}
.code-block code {
  display: block;
  white-space: pre;
}
.code-block .comment { color: #64748b; }
.code-block .tag { color: #f472b6; }
.code-block .attr { color: #93c5fd; }
.code-block .string { color: #86efac; }

/* --- Animations on Scroll --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Utilities --- */
@media (max-width: 639px) {
  .hide-mobile { display: none; }
}
@media (min-width: 640px) {
  .hide-desktop { display: none; }
}

/* --- Print --- */
@media print {
  .no-print { display: none !important; }
}