@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

* {
  font-family: 'Inter', sans-serif;
}

/* Hide scrollbars globally */
* {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

*::-webkit-scrollbar {
  display: none;
}

body {
  overflow-x: hidden;
}

body {
  transition: background 0.5s ease, color 0.3s;
  min-height: 100vh;
}

header {
  animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.dark .card {
  background: rgba(30, 41, 59, 0.7);
  border-color: rgba(51, 65, 85, 0.5);
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.dark .input-field {
  background: rgba(30, 41, 59, 0.5);
  border-color: rgba(51, 65, 85, 0.5);
  color: #e2e8f0;
}

.dark .drop-zone {
  border-color: rgba(71, 85, 105, 0.5);
  background: rgba(30, 41, 59, 0.3);
  backdrop-filter: blur(10px);
}

.dark .drop-zone:hover {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.3);
}

.card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(229, 231, 235, 0.5);
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
}

.input-field {
  background: rgba(249, 250, 251, 0.8);
  border: 1px solid #e5e7eb;
  transition: all 0.3s ease;
}

.input-field:focus {
  border-color: #3b82f6;
  outline: none;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
  transform: scale(1.02);
}

.drop-zone {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px dashed rgba(203, 213, 224, 0.6);
  background: rgba(249, 250, 251, 0.5);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.drop-zone::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}

.drop-zone:hover::before {
  opacity: 1;
}

.drop-zone:hover {
  border-color: #3b82f6;
  background: rgba(239, 246, 255, 0.8);
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 12px 40px rgba(59, 130, 246, 0.2);
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 16px 48px rgba(59, 130, 246, 0.6);
}

.btn-primary:active {
  transform: translateY(-1px) scale(1.02);
}

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

.gradient-text {
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.animate-in {
  animation: slideIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.file-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  transform: scaleY(0);
  transition: transform 0.3s;
}

.file-item:hover::before {
  transform: scaleY(1);
}

.file-item:hover {
  transform: translateX(8px);
  background: rgba(243, 244, 246, 0.8);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.dark .file-item:hover {
  background: rgba(30, 41, 59, 0.8);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.icon-badge {
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
}

/* Responsive Utilities */
@media (max-width: 640px) {
  .card {
    padding: 1.25rem !important;
  }
  
  h1 {
    font-size: 1.5rem !important;
  }
  
  h2 {
    font-size: 1.125rem !important;
  }
  
  .drop-zone {
    padding: 2rem !important;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .card {
    padding: 1.75rem !important;
  }
}