html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    background: 
        radial-gradient( circle at top left, rgba(59,130,246,0.38) 0%, rgba(96,165,250,0.18) 18%, transparent 38% ), 
        radial-gradient( circle at bottom right, rgba(56,189,248,0.32) 0%, rgba(125,211,252,0.14) 20%, transparent 40% ), 
        linear-gradient( 135deg, #f4f9ff 0%, #dbeafe 70%, #c7dfff 100% );
}

.app-container {
    display: flex;
    justify-content: center;
    margin-top: 80px;
}

.progress-wrapper {
    margin: 18px 0;
}

.progress-bar-bg {
    width: 100%;
    height: 14px;
    background: #e5e7eb;
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #2563eb, #60a5fa, #93c5fd);
    background-size: 200% 100%;
    border-radius: 999px;
    transition: width 0.25s ease;
    animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

#progressText {
    margin-top: 8px;
    color: #1d4ed8;
    font-size: 14px;
    font-weight: 600;
}

.upload-card {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    padding: 40px;
    border-radius: 18px;
    width: 500px;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.08), 0 2px 10px rgba(0,0,0,0.04);
    text-align: center;
}

.upload-card h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 12px;
    background: linear-gradient( 135deg, rgba(29,78,216,1) 0%, rgba(37,99,235,1) 28%, rgba(96,165,250,0.92) 55%, rgba(147,197,253,0.45) 78%, rgba(191,219,254,0.08) 100% );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
    text-shadow: 0 0 12px rgba(37,99,235,0.18);
}

.subtitle {
    color: #666;
    margin-bottom: 30px;
}

.upload-box {
    border: 2px dashed #cfcfcf;
    border-radius: 10px;
    padding: 40px;
    margin-bottom: 25px;
    background: #fafafa;
}

.upload-box input[type=file] {
    margin-bottom: 15px;
}

.upload-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

.upload-btn:hover {
    background: #1d4ed8;
}

.choose-btn {
    background: white;
    color: #2563eb;
    border: 1px solid #2563eb;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    margin-bottom: 12px;
}

.choose-btn:hover {
    background: #eff6ff;
}

.upload-box.drag-over {
    border-color: #2563eb;
    background: #eff6ff;
}

.file-summary {
    margin-top: 14px;
    margin-bottom: 20px;
    padding: 12px 16px;
    border-radius: 10px;
    background: #eff6ff;
    color: #1d4ed8;
    font-size: 15px;
    font-weight: 600;
    display: inline-block;
    min-width: 220px;
    transition: all 0.2s ease;
}

.drop-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
}

.drop-subtitle,
.file-summary {
    color: #666;
    font-size: 14px;
}

.page-content {
    padding-bottom: 80px;
}

.footer {
    position: static !important;
    width: 100%;
    line-height: normal;
    padding: 18px 0;
    white-space: nowrap;
}