/**
 * Main Stylesheet for NOVAR Web
 * Contains base styles, animations, and utility classes
 */

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes float-phone {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.gradient-text {
  background: linear-gradient(135deg, #000000 0%, #4B5563 50%, #6B7280 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-hover {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.letter-spacing-wider {
  letter-spacing: 0.15em;
}

/* ============================================
   NAVIGATION STYLES
   ============================================ */
.nav-glass {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-transparent {
  background: rgba(255, 255, 255, 0);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0);
  box-shadow: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   MOBILE MENU STYLES
   ============================================ */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 40;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 400px;
  height: 100vh;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: saturate(180%) blur(30px);
  -webkit-backdrop-filter: saturate(180%) blur(30px);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  z-index: 50;
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-item {
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.active .mobile-menu-item {
  opacity: 1;
  transform: translateX(0);
}

.mobile-menu.active .mobile-menu-item:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-menu-item:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-menu-item:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-menu-item:nth-child(4) { transition-delay: 0.25s; }

/* ============================================
   HAMBURGER MENU
   ============================================ */
.hamburger {
  width: 24px;
  height: 20px;
  position: relative;
  cursor: pointer;
}

.hamburger span {
  display: block;
  position: absolute;
  height: 2px;
  width: 100%;
  background: #000;
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hamburger span:nth-child(1) {
  top: 0;
}

.hamburger span:nth-child(2) {
  top: 9px;
}

.hamburger span:nth-child(3) {
  bottom: 0;
}

.hamburger.active span:nth-child(1) {
  top: 9px;
  transform: rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  bottom: 9px;
  transform: rotate(-45deg);
}

/* ============================================
   PHONE MOCKUP STYLES
   ============================================ */
.phone-mockup {
  perspective: 1000px;
}

.phone-mockup-inner {
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.phone-mockup:hover .phone-mockup-inner {
  transform: rotateY(-5deg) rotateX(2deg);
}

.app-screen {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.phone-float {
  animation: float-phone 6s ease-in-out infinite;
}

/* ============================================
   DOWNLOAD BUTTON STYLES
   ============================================ */
.download-btn {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.download-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.5s;
}

.download-btn:hover::before {
  left: 100%;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.12);
}

.download-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

.download-btn-icon {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-btn:hover .download-btn-icon {
  transform: scale(1.1) rotate(5deg);
}

/* ============================================
   PURPOSE SECTION STYLES
   ============================================ */
.purpose-card {
  background: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.purpose-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
}

.purpose-icon-wrapper {
  background: linear-gradient(135deg, #000000 0%, #1f2937 100%);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.purpose-feature-item {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.purpose-feature-item:hover {
  background: rgba(255, 255, 255, 1);
  transform: translateX(8px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.1);
}

.purpose-image-wrapper {
  position: relative;
  overflow: hidden;
}

.purpose-image-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.02) 0%, transparent 100%);
  z-index: 1;
  pointer-events: none;
}

.purpose-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background: rgba(0, 0, 0, 0.05);
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #1f2937;
}

/* ============================================
   FEATURE SECTION STYLES
   ============================================ */
.feature-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafafa 100%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #000000, #4b5563);
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.12);
}

.feature-icon-wrapper {
  background: linear-gradient(135deg, #000000 0%, #1f2937 100%);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .feature-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 15px 20px -5px rgba(0, 0, 0, 0.2);
}

/* ============================================
   CONTACT SECTION STYLES
   ============================================ */
.contact-card {
  background: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-info-item {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-info-item:hover {
  transform: translateX(8px);
}

.contact-icon {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-info-item:hover .contact-icon {
  transform: scale(1.2);
}

.social-icon {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-icon:hover {
  transform: translateY(-4px) scale(1.1);
}

/* ============================================
   MODAL STYLES
   ============================================ */
.coming-soon-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.coming-soon-modal.active {
  opacity: 1;
  visibility: visible;
}

.coming-soon-content {
  background: white;
  border-radius: 1.5rem;
  padding: 2rem;
  max-width: 400px;
  width: 90%;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.coming-soon-modal.active .coming-soon-content {
  transform: scale(1);
}

/* ============================================
   RESPONSIVE STYLES
   ============================================ */
@media (max-width: 768px) {
  /* Better touch targets */
  button, a {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  }
  
  /* Smooth scrolling */
  html {
    scroll-behavior: smooth;
  }
  
  /* Better spacing for mobile */
  section {
    scroll-margin-top: 80px;
  }
  
  .purpose-card {
    padding: 1.5rem;
  }
  
  .purpose-feature-item {
    padding: 1rem;
  }
}

@media (max-width: 640px) {
  .download-btn {
    width: 100%;
    padding: 1.125rem 1.5rem;
    min-width: 100% !important;
  }
  
  .download-btn-text {
    font-size: 0.875rem;
  }
  
  .download-btn-icon {
    font-size: 1.75rem !important;
  }
  
  .download-buttons-container {
    gap: 0.75rem;
  }
}

/* ============================================
   DONATION SECTION STYLES
   ============================================ */
.preset-amount-btn {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.preset-amount-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.preset-amount-btn.active {
  background: linear-gradient(135deg, #000000 0%, #1f2937 100%);
  color: white;
  border-color: #000000;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.15);
}

.preset-amount-btn.active:hover {
  background: linear-gradient(135deg, #1f2937 0%, #000000 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 8px -1px rgba(0, 0, 0, 0.2);
}

/* ============================================
   NAVIGATION ACTIVE STATE
   ============================================ */
.nav-link.active .nav-underline {
  width: 100% !important;
}

.nav-link.active {
  font-weight: 600;
}

.mobile-menu-item.nav-link.active {
  background-color: rgba(0, 0, 0, 0.08);
  font-weight: 600;
}