/* ============================================
   CryptoHub LLC - Main Stylesheet
   ============================================ */

/* CSS Variables - Color Scheme */
:root {
  --color-primary: #120641;
  --color-secondary: #3D307F;
  --color-accent: #C249FF;
  --color-text: #555555;
  --color-white: #FFFFFF;
  --color-light-bg: #F8F9FA;
  
  --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  --border-radius: 3px;
  --transition: all 0.3s ease;
  
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  text-transform: capitalize;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

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

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

a:hover {
  color: var(--color-secondary);
}

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

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

/* Header */
.header {
  background-color: var(--color-primary);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.header-contacts {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.header-contacts a {
  color: var(--color-white);
  transition: var(--transition);
  opacity: 0.9;
}

.header-contacts a:hover {
  opacity: 1;
  color: var(--color-accent);
  transform: translateY(-2px);
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 50px;
  width: auto;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-menu a {
  color: var(--color-white);
  font-weight: 600;
  font-size: 15px;
  padding: 10px 15px;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-accent);
}

.nav-menu .submenu {
  position: relative;
}

.nav-menu .submenu:hover .dropdown {
  display: block;
}

.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-white);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  border-radius: var(--border-radius);
  padding: var(--spacing-xs) 0;
  min-width: 200px;
  margin-top: var(--spacing-xs);
}

.dropdown li {
  list-style: none;
}

.dropdown a {
  color: var(--color-text);
  display: block;
  padding: 10px 20px;
  font-size: 14px;
}

.dropdown a:hover {
  background-color: var(--color-light-bg);
  color: var(--color-accent);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--color-white);
  transition: var(--transition);
}

/* CTA Button */
.btn {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: 700;
  text-transform: capitalize;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn:hover {
  background-color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(194, 73, 255, 0.3);
}

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

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

/* Hero Section */
.hero {
  background: linear-gradient(40deg, var(--color-primary) 36%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(18, 6, 65, 0.6);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  color: var(--color-white);
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

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

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

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  font-size: 1.1rem;
  color: var(--color-text);
  max-width: 600px;
  margin: 0 auto;
}

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

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* Cards */
.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(40deg, var(--color-primary), var(--color-secondary));
  border-radius: 50%;
}

.card-icon svg {
  width: 40px;
  height: 40px;
  fill: var(--color-white);
}

.card h3 {
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.card p {
  text-align: center;
  color: var(--color-text);
}

/* Services Section */
.services {
  background-color: var(--color-light-bg);
}

.service-card {
  text-align: center;
}

.service-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
}

/* Testimonials */
.testimonials {
  background: linear-gradient(40deg, var(--color-primary) 36%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
}

.testimonials .section-title h2 {
  color: var(--color-white);
}

.testimonial-card {
  background-color: rgba(255, 255, 255, 0.1);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-author-info h5 {
  color: var(--color-white);
  margin-bottom: 5px;
}

.testimonial-author-info p {
  font-size: 0.9rem;
  opacity: 0.8;
  margin: 0;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(40deg, var(--color-primary) 36%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

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

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  margin-bottom: var(--spacing-xs);
}

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

.footer-section a[href^="mailto:"]:hover,
.footer-section a[href*="linkedin"]:hover {
  opacity: 0.8;
  transform: translateX(3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 16px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
}

@media (min-width: 769px) {
  .header-contacts .header-email-text {
    display: inline;
  }
}

@media (max-width: 768px) {
  .header-contacts {
    display: none;
  }
  
  .header-contacts .header-email-text {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-menu .submenu {
    width: 100%;
  }
  
  .dropdown {
    position: static;
    box-shadow: none;
    background-color: rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-xs);
  }
  
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 13px;
  }
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }