/* Global Reset & Fonts  */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #0b0f19; 
  color: #e0e0e0;
  padding: 40px 20px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Main Container  */
.container {
  background: #1c1c2e; 
  padding: 30px;
  border-radius: 20px; 
  box-shadow: 0px 0px 8px rgba(94, 53, 177, 0.3); 
  border: 1px solid #4527a0; 
  max-width: 1000px;
  width: 100%;
}

header {
  text-align: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid #2e2e42;
}

header h1 { color: #ffffff; font-weight: 700; margin-bottom: 5px; }
header p { color: #9ca3af; }

/* Layout Grid  */
.main-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr; 
  gap: 40px;
}

/* File Upload Styles  */
.file-upload-container {
  background: #0b0f19;
  border: 1px solid #36364c;
  border-radius: 12px;
  padding: 30px 20px;
  margin-bottom: 20px;
}

.upload-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed #36364c;
  border-radius: 8px;
  padding: 40px 20px;
  transition: all 0.3s ease;
  background: rgba(28, 28, 46, 0.5);
}

.upload-box.dragover {
  border-color: #7e57c2;
  background: rgba(126, 87, 194, 0.1);
}

.browse-btn {
  background: transparent;
  border: 1px solid #7e57c2;
  color: #b39ddb;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
}

.browse-btn:hover {
  background: rgba(126, 87, 194, 0.15);
  color: #ffffff;
}

/* Submit Button  */
.submit-btn {
  width: 100%;
  margin-top: 25px;
  padding: 14px;
  background: linear-gradient(135deg, #5e35b1 0%, #311b92 100%);
  color: #ffffff;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
}

.submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(94, 53, 177, 0.4);
}

/* Result Section  */
.result-section {
  background: #131320;
  border-radius: 20px; 
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
  border: 1px solid #2e2e42;
  min-height: 200px;
}

.placeholder-text h3 { color: #ffffff; margin-bottom: 8px; }
.placeholder-text p { color: #6b7280; font-size: 0.9rem; }

/* Dynamic Result Styles */
.result-box { animation: fadeIn 0.5s ease; width: 100%; }

.confidence-bar-bg {
  width: 100%;
  height: 8px;
  background-color: #2e2e42;
  border-radius: 4px;
  margin-top: 15px;
  overflow: hidden;
}

.confidence-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1s ease;
  background-color: #7e57c2;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .main-content { grid-template-columns: 1fr; }
}