/* ========================================
   Ingá Certificação Digital - Landing Page
   Mobile First | Clean | Professional
   ======================================== */

:root {
  /* Colors inspired by Safeweb + Ingá logo */
  --color-primary: #1a56db;       /* Blue trustworthy */
  --color-primary-dark: #1240a8;
  --color-primary-light: #e8f0fe;
  --color-accent: #c9a227;        /* Gold from logo */
  --color-accent-dark: #a6861f;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-light: #94a3b8;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --color-success: #059669;
  --color-shadow: rgba(15, 23, 42, 0.08);
  --color-shadow-strong: rgba(15, 23, 42, 0.12);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 0.25s ease;
}

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

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

@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: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

/* Container */
.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ========== BANNER HERO ========== */
.banner-header {
  width: 100%;
  background: var(--color-bg);
  padding: 0;
  margin: 0;
}

.banner-wrap {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0;
}

.banner-img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: middle;
}

/* ========== FUNNEL ========== */
.funnel {
  padding: var(--space-lg) 0 var(--space-lg);
  flex: 1 0 auto;
}

.funnel-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  box-shadow: 0 4px 24px var(--color-shadow);
  position: relative;
  overflow: hidden;
}

.step {
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.step.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.step[hidden] {
  display: none !important;
}

.step-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  text-align: center;
  line-height: 1.3;
}

.step-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-md);
  line-height: 1.55;
}

.step-desc.highlight {
  color: var(--color-text);
  font-weight: 500;
  background: var(--color-primary-light);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin-top: var(--space-sm);
}

/* Buttons */
.btn-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 52px;
  padding: 0.875rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  transition: background-color var(--transition), 
              box-shadow var(--transition), 
              transform var(--transition),
              color var(--transition);
  text-align: center;
  line-height: 1.3;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(26, 86, 219, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(26, 86, 219, 0.35);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

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

.btn-secondary:active {
  transform: scale(0.98);
}

/* Secondary action (dúvidas) */
.secondary-action {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.secondary-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.btn-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-link:hover {
  color: var(--color-primary-dark);
  background-color: var(--color-primary-light);
}

.btn-link:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Result icons */
.result-icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--color-success);
}

.result-icon-info {
  color: var(--color-primary);
}

/* ========== FOOTER ========== */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  text-align: center;
  margin-top: 0;
}

.footer-brand {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.footer-tag {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.footer-note {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* ========== RESPONSIVE ========== */

/* Larger phones ~430px+ */
@media (min-width: 430px) {
  .container {
    padding: 0 var(--space-lg);
  }
  
  .funnel-card {
    padding: var(--space-2xl) var(--space-xl);
  }
}

/* Tablets ~768px+ */
@media (min-width: 768px) {
  .banner-wrap {
    max-width: 960px;
  }

  .funnel {
    padding: var(--space-xl) 0 var(--space-2xl);
  }

  .footer {
    padding: var(--space-xl) 0;
  }
  
  .funnel-card {
    padding: 2.5rem 2.5rem;
  }
  
  .step-title {
    font-size: 1.375rem;
  }
  
  .btn {
    min-height: 56px;
    font-size: 1rem;
  }
  
  /* Side-by-side buttons on larger screens for main choices */
  .btn-group {
    flex-direction: row;
    gap: var(--space-md);
  }
  
  .btn-group .btn {
    flex: 1;
  }
}

/* Desktop ~1024px+ */
@media (min-width: 1024px) {
  .banner-wrap {
    max-width: 1100px;
  }

  .container {
    max-width: 680px;
  }
}

/* Large desktop */
@media (min-width: 1440px) {
  .banner-wrap {
    max-width: 1200px;
  }

  .container {
    max-width: 720px;
  }
}