/* ============================================
   BioS Tech - Estilos Globais
   Design: Dark Mode Moderno com Vermelho e Preto
   ============================================ */

:root {
  /* Cores Principais */
  --primary: #e53e3e;
  --primary-dark: #c53030;
  --background: #1a1a1a;
  --background-light: #2d2d2d;
  --foreground: #f2f2f2;
  --foreground-muted: #b3b3b3;
  --border: #404040;
  --card: #262626;
  
  /* Espaçamento */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Tipografia */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --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: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Raio de borda */
  --radius: 0.65rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-accent: 0 10px 25px -5px rgba(229, 62, 62, 0.1);
  
  /* Transições */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
}

@media (max-width: 768px) {
  :root {
    --spacing-sm: 0.65rem;
    --spacing-md: 0.9rem;
    --spacing-lg: 1.35rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.75rem;
    --font-size-base: 0.95rem;
    --font-size-lg: 1.05rem;
    --font-size-xl: 1.2rem;
    --font-size-2xl: 1.4rem;
    --font-size-3xl: 1.6rem;
    --font-size-4xl: 1.85rem;
    --font-size-5xl: 2.25rem;
    --font-size-6xl: 2.6rem;
  }

  body {
    line-height: 1.5;
  }

  .container {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  font-size: var(--font-size-base);
}

/* Tipografia */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-6xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

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

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

a:hover {
  color: var(--primary-dark);
}

/* Container */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-sm);
  padding-right: var(--spacing-sm);
}

@media (min-width: 640px) {
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
    max-width: 1280px;
  }
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

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

.btn-outline {
  background-color: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background-color: var(--background-light);
  border-color: var(--primary);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* Cards */
.card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-accent);
}

/* Grid */
.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(250px, 1fr));
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Flex */
.flex {
  display: flex;
}

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

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  flex-direction: column;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

/* Seções */
section {
  padding: var(--spacing-2xl) 0;
}

section.bg-card {
  background-color: var(--card);
}

/* Utilidades */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--foreground-muted);
}

.text-primary {
  color: var(--primary);
}

.text-accent {
  color: var(--primary);
}

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

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

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

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

.py-sm {
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

.py-md {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.py-lg {
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
}

.max-w-lg {
  max-width: 32rem;
}

.max-w-2xl {
  max-width: 42rem;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* Responsividade */
@media (max-width: 768px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  section {
    padding: var(--spacing-xl) 0;
  }
}

/* Animações */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

/* Scroll */
.scroll-smooth {
  scroll-behavior: smooth;
}

/* Overlay */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 40;
}

.whatsapp-fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: #25d366;
  color: white;
  display: grid;
  place-items: center;
  box-shadow: 0 15px 30px -10px rgba(37, 211, 102, 0.7);
  z-index: 1100;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-fab:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -12px rgba(37, 211, 102, 0.8);
}

.whatsapp-fab svg {
  width: 1.6rem;
  height: 1.6rem;
}

@media (max-width: 768px) {
  .whatsapp-fab {
    bottom: 1rem;
    right: 1rem;
    width: 3rem;
    height: 3rem;
  }

  .whatsapp-fab svg {
    width: 1.4rem;
    height: 1.4rem;
  }
}

/* Visibilidade */
.hidden {
  display: none;
}

.visible {
  display: block;
}

@media (max-width: 768px) {
  .hidden-mobile {
    display: none;
  }
}

@media (min-width: 769px) {
  .visible-mobile {
    display: none;
  }
}