:root {
  --primary: #4f46e5;
  --secondary: #ec4899;
  --bg-gradient: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  --card-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --text-main: #ffffff;
  --text-muted: #cbd5e1;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}

header {
  text-align: center;
  margin-bottom: 3rem;
}

header h1 {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(to right, #818cf8, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

.card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 1.5rem;
  padding: 3rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.upload-group {
  margin-bottom: 2rem;
  text-align: left;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-muted);
}

input[type="file"] {
  width: 100%;
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 0.5rem;
  color: white;
  transition: border-color 0.3s;
}

input[type="file"]:focus {
  outline: none;
  border-color: var(--primary);
}

.btn {
  background: linear-gradient(to right, var(--primary), var(--secondary));
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  width: 100%;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

/* Results Page Styles */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  justify-content: center;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 600;
}

.tab-btn.active, .tab-btn:hover {
  background: rgba(79, 70, 229, 0.2);
  border-color: var(--primary);
  color: white;
}

.tab-content {
  display: none;
  animation: fadeIn 0.5s ease;
}

.tab-content.active {
  display: block;
}

.table-container {
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 1rem;
  border: 1px solid var(--glass-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  white-space: nowrap;
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
  background: rgba(79, 70, 229, 0.2);
  color: white;
  font-weight: 700;
  position: sticky;
  top: 0;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

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

footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  margin-top: auto;
}