/* Advora Website - Main Stylesheet */
/* Mobile-first responsive design (375px base) */

:root {
  /* Colors */
  --color-primary: #2563EB;
  --color-primary-dark: #1E40AF;
  --color-dark: #111827;
  --color-gray: #6B7280;
  --color-light-gray: #F3F4F6;
  --color-white: #FFFFFF;
  --color-bg-alt: #F9FAFB;
  
  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.875rem;
  --font-size-sm: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 2.5rem;
  --font-size-3xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Container */
  --container-max: 1280px;
  --container-padding: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-dark);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

h1 {
  font-size: var(--font-size-2xl);
}

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

h3 {
  font-size: var(--font-size-lg);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

/* Header/Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-light-gray);
  padding: 1rem 0;
}

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

.logo img {
  height: 28px;
  width: auto;
}

.nav-menu {
  display: none;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-menu a {
  color: var(--color-dark);
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.nav-menu a:hover {
  color: var(--color-primary);
}

.lang-toggle {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-right: var(--spacing-md);
}

.lang-toggle .active {
  color: var(--color-dark);
  font-weight: 600;
}

.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-dark);
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

.hero .subtitle {
  font-size: var(--font-size-md);
  color: var(--color-gray);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.trust-signal {
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  margin-top: var(--spacing-md);
}

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

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

.section-dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--color-white);
}

.section-dark p {
  color: #D1D5DB;
}

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

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header .subtitle {
  color: var(--color-gray);
  font-size: var(--font-size-md);
}

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

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

/* Cards */
.card {
  background: var(--color-white);
  border-radius: 8px;
  padding: var(--spacing-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card h3 {
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.card p {
  color: var(--color-gray);
}

/* Process Steps */
.process-steps {
  display: grid;
  gap: var(--spacing-lg);
}

.step {
  position: relative;
  padding-left: var(--spacing-xl);
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.step h3 {
  margin-bottom: var(--spacing-xs);
}

/* Results/Case Studies */
.result-card {
  background: var(--color-white);
  border-radius: 8px;
  padding: var(--spacing-lg);
  border: 1px solid var(--color-light-gray);
}

.result-metric {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.result-description {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

/* FAQ Accordion */
.faq-item {
  background: var(--color-white);
  border-radius: 8px;
  margin-bottom: var(--spacing-sm);
  border: 1px solid var(--color-light-gray);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  background: none;
  border: none;
  text-align: left;
  font-size: var(--font-size-md);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question:hover {
  background: var(--color-bg-alt);
}

.faq-answer {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--color-gray);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Lead Magnet Form */
.lead-magnet {
  background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
  color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: 12px;
  text-align: center;
}

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

.lead-magnet-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 500px;
  margin: 0 auto;
}

.lead-magnet-form input {
  padding: 0.875rem 1rem;
  border-radius: 6px;
  border: none;
  font-size: var(--font-size-sm);
}

.lead-magnet-form button {
  background: var(--color-white);
  color: var(--color-primary);
  font-weight: 600;
}

/* Final CTA */
.final-cta {
  text-align: center;
  padding: var(--spacing-3xl) 0;
}

.calendly-container {
  max-width: 900px;
  margin: var(--spacing-xl) auto 0;
}

/* Footer */
.footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

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

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: #D1D5DB;
  font-size: var(--font-size-xs);
}

.footer-section a:hover {
  color: var(--color-white);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid #374151;
  font-size: var(--font-size-xs);
  color: #9CA3AF;
}

/* Tablet (768px+) */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
  }
  
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  .nav-menu {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: none;
  }
  
  .hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }
  
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Desktop (1280px+) */
@media (min-width: 1280px) {
  :root {
    --spacing-3xl: 8rem;
  }
  
  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Print styles */
@media print {
  .header,
  .footer,
  .btn {
    display: none;
  }
}