/* Galaxy LED Robots - Main Stylesheet */

/* CSS Variables - Design System */
:root {
  /* Colors */
  --bg-primary: #0B0E14;
  --bg-card: #121826;
  --text-primary: #E6EAF2;
  --text-secondary: #B8C5D6;
  --accent-green: #E63946;
  --accent-primary: #E63946;
  --accent-blue: #4FD1FF;
  --accent-red: #FF3B3B;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Glassmorphism */
  --glass-bg: rgba(18, 24, 38, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(10px);
}

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

/* Responsive images - prevent overflow on mobile */
img:not(.hero__background):not(.header__logo-image):not(.hero__logo-image):not(.footer__logo-image) {
  max-width: 100%;
  height: auto;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

/* Prevent horizontal scroll on mobile */
@media (max-width: 768px) {
  body {
    min-width: 0;
  }
}

/* Prevent horizontal scroll on mobile */
html, body {
  max-width: 100vw;
}

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

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

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

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

a:hover {
  color: var(--accent-blue);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

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

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

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--accent-green);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(79, 209, 255, 0.3);
}

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

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

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.1rem;
}

/* Glassmorphism Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--accent-green);
  box-shadow: 0 10px 40px rgba(230, 57, 70, 0.1);
  transform: translateY(-5px);
}

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

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

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

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

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Responsive Design */

/* Tablet and below (max-width: 968px) */
@media (max-width: 968px) {
  .container,
  .container-wide {
    padding: 0 var(--spacing-md);
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
  
  .grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  .grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
  
  .grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  
  .btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
  }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
  :root {
    --spacing-md: 1.25rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 3rem;
  }
  
  .container,
  .container-wide {
    padding: 0 var(--spacing-sm);
  }
  
  .section {
    padding: var(--spacing-sm) 0;
  }
  
  .section-title {
    margin-bottom: var(--spacing-md);
  }
  
  .section-subtitle {
    font-size: 1rem;
    padding: 0 var(--spacing-sm);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.95rem;
    width: 100%;
    max-width: 300px;
  }
  
  .btn-large {
    padding: 1rem 1.75rem;
    font-size: 0.95rem;
  }
  
  .glass-card {
    padding: var(--spacing-sm);
  }
  
  h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  
  h2 {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }
  
  h3 {
    font-size: clamp(1.5rem, 5vw, 2rem);
  }
  
  p {
    font-size: 0.95rem;
  }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
  :root {
    --spacing-sm: 0.6rem;
    --spacing-md: 0.9rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
  }
  
  .container,
  .container-wide {
    padding: 0 var(--spacing-sm);
    max-width: 100%;
  }
  
  .section {
    padding: var(--spacing-sm) 0;
  }
  
  .btn {
    padding: 0.875rem 1.25rem;
    font-size: 0.95rem;
    width: 100%;
    max-width: 100%;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  
  .glass-card {
    padding: var(--spacing-sm);
    border-radius: 12px;
  }
  
  h1 {
    font-size: clamp(1.75rem, 10vw, 2.5rem);
    margin-bottom: var(--spacing-sm);
  }
  
  h2 {
    font-size: clamp(1.5rem, 8vw, 2rem);
    margin-bottom: var(--spacing-sm);
  }
  
  h3 {
    font-size: clamp(1.25rem, 6vw, 1.75rem);
    margin-bottom: var(--spacing-sm);
  }
  
  .section-title h2 {
    margin-bottom: var(--spacing-xs);
  }
  
  .section-subtitle {
    font-size: 0.9rem;
    padding: 0 var(--spacing-xs);
  }
  
  /* Partner grid on mobile */
  .grid.grid-4 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
}

/* Very small screens (e.g. iPhone SE 375px) */
@media (max-width: 375px) {
  .container,
  .container-wide {
    padding: 0 var(--spacing-xs);
  }
  
  .section-title h2 {
    font-size: clamp(1.35rem, 9vw, 1.75rem);
  }
  
  .section-subtitle {
    font-size: 0.85rem;
  }
  
  .grid.grid-4 {
    gap: var(--spacing-xs);
  }
}