/* ===== MODERN RESPONSIVE CSS ===== */
:root {
  /* Modern Color Palette */
  --primary: #ff2e63;
  --primary-dark: #e91e53;
  --primary-light: #ff7ba0;
  --secondary: #6c63ff;
  --accent: #00bfae;
  --dark: #1a1a2e;
  --darker: #16213e;
  --light: #f8f9fa;
  --white: #ffffff;
  --gray-light: #a0a0a0;
  --gray: #6c757d;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  --gradient-dark: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
  
  /* Typography */
  --font-primary: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  
  /* Effects */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
  --shadow: 0 4px 20px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.2);
  --blur: blur(20px);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

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

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

/* ===== FOOTER STYLES ===== */
.footer {
  background: var(--gradient-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255, 46, 99, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(108, 99, 255, 0.1) 0%, transparent 50%);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  position: relative;
  z-index: 2;
}

/* ===== MOBILE LAYOUT ===== */
.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: var(--space-12) 0 var(--space-8);
}

/* Footer Sections - Mobile Cards */
.footer-section {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: var(--blur);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

/* Logo Section */
.footer-section:first-child {
  text-align: center;
  background: rgba(255, 255, 255, 0.1);
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  background: var(--gradient-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.footer-logo i {
  font-size: 1.5rem;
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-5);
}

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--white);
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:active {
  background: var(--gradient-primary);
  transform: scale(0.9);
}

/* Section Titles */
.footer-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-title::before {
  content: '';
  width: 4px;
  height: 16px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* Links */
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.footer-links a:active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(8px);
}

/* Newsletter */
.newsletter-text {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.newsletter-form {
  margin-top: var(--space-4);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.newsletter-input {
  padding: var(--space-3);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  color: var(--white);
  font-size: var(--text-base);
  outline: none;
}

.newsletter-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.newsletter-btn {
  padding: var(--space-3);
  background: var(--gradient-primary);
  border: none;
  color: var(--white);
  cursor: pointer;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all 0.3s ease;
}

.newsletter-btn:active {
  transform: scale(0.95);
}

/* ===== FOOTER BOTTOM - MOBILE ===== */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: var(--space-8) 0 var(--space-6);
  background: rgba(0, 0, 0, 0.3);
}

.footer-bottom-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: center;
  text-align: center;
}

.copyright {
  order: 2;
}

.copyright p {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-sm);
}

.footer-bottom-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  order: 1;
  width: 100%;
  max-width: 280px;
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all 0.3s ease;
}

.footer-bottom-links a:active {
  background: var(--gradient-primary);
  color: var(--white);
}

.app-download {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  order: 3;
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 300px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.download-text {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--text-sm);
  font-weight: 600;
}

.download-links {
  display: flex;
  gap: var(--space-4);
}

.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  color: var(--white);
  text-decoration: none;
  transition: all 0.3s ease;
}

.download-link:active {
  background: var(--gradient-primary);
  transform: scale(0.9);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 3.5rem;
  height: 3.5rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: var(--white);
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
}

.back-to-top:active {
  transform: scale(0.9);
}

/* ===== TABLET LAYOUT (768px+) ===== */
@media (min-width: 768px) {
  .footer-container {
    padding: 0 var(--space-6);
  }
  
  .footer-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
    padding: var(--space-16) 0 var(--space-10);
  }
  
  .footer-section:first-child {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    text-align: left;
    align-items: center;
  }
  
  .footer-logo {
    justify-content: flex-start;
  }
  
  .social-links {
    justify-content: flex-end;
  }
  
  .footer-description {
    margin-bottom: 0;
  }
  
  /* Footer Bottom - Tablet */
  .footer-bottom-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
  
  .footer-bottom-links {
    flex-direction: row;
    order: 2;
    width: auto;
    max-width: none;
    gap: var(--space-4);
  }
  
  .footer-bottom-links a {
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
  }
  
  .copyright {
    order: 1;
  }
  
  .app-download {
    flex-direction: row;
    order: 3;
    width: auto;
    max-width: none;
    padding: var(--space-3) var(--space-4);
  }
  
  .input-group {
    flex-direction: row;
  }
}

/* ===== DESKTOP LAYOUT (1024px+) ===== */
@media (min-width: 1024px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-10);
    padding: var(--space-16) 0 var(--space-12);
  }
  
  .footer-section:first-child {
    grid-column: 1 / 2;
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .social-links {
    justify-content: flex-start;
  }
  
  /* Remove card styles on desktop for cleaner look */
  .footer-section {
    background: transparent;
    backdrop-filter: none;
    border: none;
    padding: 0;
  }
  
  .footer-section:first-child {
    background: transparent;
  }
  
  /* Desktop hover effects */
  .footer-links a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(8px);
  }
  
  .social-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-2px);
  }
  
  .footer-bottom-links a:hover {
    color: var(--white);
    background: var(--gradient-primary);
  }
  
  .download-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-2px);
  }
  
  .newsletter-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
  
  .back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
  }
}

/* ===== LARGE DESKTOP (1200px+) ===== */
@media (min-width: 1200px) {
  .footer-content {
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr;
    gap: var(--space-12);
  }
  
  .footer-section:first-child {
    grid-column: 1 / 2;
  }
}

/* ===== MOBILE OPTIMIZATIONS ===== */
@media (max-width: 767px) {
  /* Touch targets */
  .footer-links a,
  .footer-bottom-links a,
  .social-link,
  .download-link {
    min-height: 44px;
  }
  
  .footer-title {
    min-height: 44px;
  }
  
  /* Reduce padding on very small screens */
  @media (max-width: 480px) {
    .footer-container {
      padding: 0 var(--space-3);
    }
    
    .footer-section {
      padding: var(--space-4);
    }
    
    .footer-content {
      gap: var(--space-4);
      padding: var(--space-8) 0 var(--space-6);
    }
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

/* Focus styles */
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}