/* ==========================================================================
   ImuneVax - Design System & Base Stylesheet
   Slogan: Cuidado que Protege
   ========================================================================== */

:root {
  /* Color Palette strictly defined */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F7F7;
  --bg-card: #FFFFFF;
  --brand-primary: #2F8FA3;   /* Deep Teal Blue for headings & heavy elements */
  --brand-accent: #6EC7B8;    /* Light Sea Green / Mint for CTA & Badges */
  --brand-detail: #3FAF9F;    /* Medium Teal Green for icons & fine details */
  --text-dark: #2C3E50;       /* Slate Lead Dark Gray for high legibility text */
  --text-muted: #5A6B7C;      /* Soft Gray for secondary descriptions */
  --border-light: #E2E8F0;
  --border-accent: rgba(110, 199, 184, 0.3);
  
  /* Elevation & Shadows */
  --shadow-sm: 0 2px 8px rgba(47, 143, 163, 0.04);
  --shadow-md: 0 10px 30px rgba(47, 143, 163, 0.08);
  --shadow-lg: 0 20px 40px rgba(47, 143, 163, 0.12);
  --shadow-glow: 0 8px 25px rgba(110, 199, 184, 0.4);

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout Spacing */
  --nav-height: 90px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography Classes */
.font-serif {
  font-family: var(--font-serif);
}

/* --------------------------------------------------------------------------
   Header / Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition: all var(--transition-smooth);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.98);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo & Branding */
.brand-link {
  display: flex;
  align-items: center;
}

.brand-logo-img {
  max-height: 56px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.brand-link:hover .brand-logo-img {
  transform: scale(1.04);
}

.footer-logo-img {
  max-height: 72px;
  width: auto;
  object-fit: contain;
  background-color: rgba(255, 255, 255, 0.95);
  padding: 8px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* Header Button */
.btn-header {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--brand-accent);
  color: #0F3D35;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.btn-header:hover {
  background-color: #5DBDAE;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-header svg {
  width: 18px;
  height: 18px;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding-top: calc(var(--nav-height) + 2rem);
  padding-bottom: 5rem;
  background: radial-gradient(circle at 80% 20%, rgba(110, 199, 184, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 10% 60%, rgba(47, 143, 163, 0.05) 0%, transparent 40%),
              var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

/* Hero Logo Principal */
.hero-brand-logo-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 1.75rem;
}

.hero-logo-img {
  max-height: 120px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 10px 25px rgba(47, 143, 163, 0.12));
  transition: transform var(--transition-smooth);
}

.hero-logo-img:hover {
  transform: scale(1.03);
}

/* Badge */
.badge-coming-soon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(110, 199, 184, 0.12);
  border: 1px solid rgba(110, 199, 184, 0.35);
  color: var(--brand-primary);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.75rem;
  animation: pulse-border 3s infinite;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--brand-detail);
  box-shadow: 0 0 0 3px rgba(63, 175, 159, 0.25);
}

@keyframes pulse-border {
  0%, 100% { border-color: rgba(110, 199, 184, 0.35); }
  50% { border-color: rgba(47, 143, 163, 0.6); }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--brand-primary);
  line-height: 1.25;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 740px;
  margin: 0 auto 3rem auto;
  font-weight: 400;
  line-height: 1.7;
}

/* Hero Feature Cards */
.hero-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
  text-align: left;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--brand-accent), var(--brand-detail));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(110, 199, 184, 0.4);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(245, 247, 247, 1);
  color: var(--brand-detail);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(110, 199, 184, 0.2);
  transition: all var(--transition-fast);
}

.feature-card:hover .feature-icon-box {
  background: rgba(110, 199, 184, 0.12);
  color: var(--brand-primary);
  transform: scale(1.05);
}

.feature-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brand-primary);
  line-height: 1.4;
}

/* Hero CTA Area */
.hero-cta-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}

.btn-primary-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background-color: var(--brand-accent);
  color: #0C342C;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 1.1rem 2.25rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-smooth);
  border: none;
  cursor: pointer;
}

.btn-primary-hero:hover {
  background-color: #5DBDAE;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 30px rgba(110, 199, 184, 0.5);
}

.btn-primary-hero svg {
  width: 22px;
  height: 22px;
}

.auxiliary-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* --------------------------------------------------------------------------
   Diferenciais Section (Vacinação Acalentada)
   -------------------------------------------------------------------------- */
.section-diferenciais {
  padding: 5rem 0;
  background-color: var(--bg-secondary);
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.differentials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.diff-card {
  background: var(--bg-card);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226, 232, 240, 0.8);
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.diff-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(110, 199, 184, 0.5);
}

.diff-icon-header {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(110, 199, 184, 0.15), rgba(63, 175, 159, 0.08));
  color: var(--brand-detail);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(110, 199, 184, 0.25);
}

.diff-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 0.85rem;
  line-height: 1.3;
}

.diff-description {
  font-size: 0.975rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   "A Verdade da Vacina" Section (Conscientização)
   -------------------------------------------------------------------------- */
.section-awareness {
  padding: 4.5rem 0;
  background-color: var(--bg-primary);
}

.awareness-box {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  border: 1px solid rgba(110, 199, 184, 0.3);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.awareness-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(to bottom, var(--brand-primary), var(--brand-accent));
}

.awareness-content {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.awareness-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--brand-detail);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.awareness-title {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

.awareness-text {
  font-size: 1.075rem;
  color: var(--text-dark);
  line-height: 1.8;
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: #1A2E3B;
  color: #E2E8F0;
  padding: 4rem 0 2rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-slogan {
  font-size: 0.75rem;
  color: var(--brand-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
}

.footer-info-grid {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  max-width: 800px;
  width: 100%;
}

.footer-info-card {
  flex: 1 1 320px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 1rem;
  text-align: left;
  transition: all var(--transition-fast);
}

.footer-info-card:hover {
  background: rgba(110, 199, 184, 0.1);
  border-color: rgba(110, 199, 184, 0.35);
  transform: translateY(-2px);
}

.info-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(110, 199, 184, 0.15);
  color: var(--brand-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-icon svg {
  width: 22px;
  height: 22px;
}

.info-details {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.info-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand-accent);
  font-weight: 700;
}

.info-value {
  font-size: 0.975rem;
  color: #FFFFFF;
  font-weight: 600;
}

.info-subtext {
  font-size: 0.8125rem;
  color: #94A3B8;
}

.info-subtext.status-tag {
  color: #F59E0B;
  font-weight: 600;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-button {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  transition: all var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.social-button:hover {
  background: var(--brand-accent);
  color: #0C342C;
  transform: translateY(-3px);
}

.social-button svg {
  width: 20px;
  height: 20px;
}

.footer-bottom {
  padding-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: #94A3B8;
}

/* --------------------------------------------------------------------------
   Floating WhatsApp Button
   -------------------------------------------------------------------------- */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
  z-index: 9999;
  transition: all var(--transition-smooth);
  animation: float-pulse 2.5s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1) translateY(-4px);
  background-color: #20BA5A;
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

@keyframes float-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6), 0 8px 25px rgba(37, 211, 102, 0.4);
  }
  70% {
    box-shadow: 0 0 0 16px rgba(37, 211, 102, 0), 0 8px 25px rgba(37, 211, 102, 0.4);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0), 0 8px 25px rgba(37, 211, 102, 0.4);
  }
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-features {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .differentials-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .awareness-box {
    padding: 2.5rem 1.5rem;
  }
}

@media (max-width: 640px) {
  .header-container {
    gap: 0.5rem;
  }
  .brand-slogan {
    display: none;
  }
  .btn-header span {
    display: none;
  }
  .btn-header {
    padding: 0.5rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    justify-content: center;
  }
  .hero-title {
    font-size: 1.75rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .btn-primary-hero {
    width: 100%;
    font-size: 1rem;
    padding: 1rem 1.5rem;
  }
  .whatsapp-float {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 52px;
    height: 52px;
  }
  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}