* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: #fafafa;
    color: #0a0a0a;
    line-height: 1.6;
}
.min-h-screen { min-height: 100vh; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.text-center { text-align: center; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-6xl { font-size: 3.75rem; line-height: 1; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mt-2 { margin-top: 0.5rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.border-b { border-bottom: 1px solid #e5e5e5; }
.border-t { border-top: 1px solid #e5e5e5; }
.bg-card { background-color: #ffffff; }
.bg-muted { background-color: #f5f5f5; }
.bg-muted-30 { background-color: rgba(245, 245, 245, 0.3); }
.text-muted-foreground { color: #737373; }
.text-primary { color: #2563eb; }
.w-8 { width: 2rem; }
.h-8 { height: 2rem; }
.w-12 { width: 3rem; }
.h-12 { height: 3rem; }
.w-16 { width: 4rem; }
.h-16 { height: 4rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-full { border-radius: 9999px; }
.flex-1 { flex: 1 1 0%; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-6xl { max-width: 72rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.grid { display: grid; }
.md-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.lg-grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.md-flex { display: flex; }
.md-flex-row { flex-direction: row; }
.md-py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.md-py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.md-text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.md-text-6xl { font-size: 3.75rem; line-height: 1; }
.lg-text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-balance { text-wrap: balance; }
.text-pretty { text-wrap: pretty; }
.hover-text-foreground:hover { color: #0a0a0a; }
.hover-shadow-lg:hover { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }
.transition-colors { transition-property: color, background-color, border-color, text-decoration-color, fill, stroke; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-shadow { transition-property: box-shadow; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-4 { padding: 1rem; }
.p-12 { padding: 3rem; }
.border-2 { border-width: 2px; }
.border-dashed { border-style: dashed; }
.border-border { border-color: #e5e5e5; }
.hover-border-primary-50:hover { border-color: rgba(15, 23, 42, 0.5); }
.bg-primary-5 { background-color: rgba(15, 23, 42, 0.05); }
.bg-primary-10 { background-color: rgba(15, 23, 42, 0.1); }
.text-primary-foreground { color: #ffffff; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.w-5 { width: 1.25rem; }
.h-5 { height: 1.25rem; }
.w-6 { width: 1.5rem; }
.h-6 { height: 1.5rem; }
.w-4 { width: 1rem; }
.h-4 { height: 1rem; }
.mr-2 { margin-right: 0.5rem; }
.flex-shrink-0 { flex-shrink: 0; }
.min-w-0 { min-width: 0; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.font-medium { font-weight: 500; }
.bg-muted-50 { background-color: rgba(245, 245, 245, 0.5); }
.w-full { width: 100%; }
.bg-transparent { background-color: transparent; }
.disabled-opacity-50:disabled { opacity: 0.5; }
.disabled-cursor-not-allowed:disabled { cursor: not-allowed; }
.cursor-pointer { cursor: pointer; }
.opacity-50 { opacity: 0.5; }
.cursor-not-allowed { cursor: not-allowed; }

/* Button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s ease;
    border: 1px solid transparent;
    padding: 0.5rem 1rem;
    text-decoration: none;
    cursor: pointer;
}
.btn-primary {
    background-color: #0f172a;
    color: #ffffff;
}
.btn-primary:hover {
    background-color: #1e293b;
}
.btn-outline {
    background-color: transparent;
    color: #0f172a;
    border-color: #e5e5e5;
}
.btn-outline:hover {
    background-color: #f5f5f5;
}
.btn-ghost {
    background-color: transparent;
    color: #737373;
}
.btn-ghost:hover {
    background-color: #f5f5f5;
    color: #0a0a0a;
}
.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

/* Card styles */
.card {
    background-color: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

/* File upload area */
.upload-area {
    border: 2px dashed #e5e5e5;
    border-radius: 0.5rem;
    padding: 3rem;
    text-align: center;
    transition: all 0.15s ease;
    cursor: pointer;
}
.upload-area:hover {
    border-color: rgba(15, 23, 42, 0.5);
}
.upload-area.drag-active {
    border-color: #0f172a;
    background-color: rgba(15, 23, 42, 0.05);
}

/* Progress bar */
.progress {
    width: 100%;
    height: 0.5rem;
    background-color: #f5f5f5;
    border-radius: 0.25rem;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background-color: #0f172a;
    transition: width 0.3s ease;
}

/* File input */
.file-input {
    display: none;
}

/* Responsive */
@media (min-width: 768px) {
    .md-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md-flex { display: flex; }
    .md-flex-row { flex-direction: row; }
    .md-py-16 { padding-top: 4rem; padding-bottom: 4rem; }
    .md-py-24 { padding-top: 6rem; padding-bottom: 6rem; }
    .md-text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
    .md-text-6xl { font-size: 3.75rem; line-height: 1; }
    .md-text-xl { font-size: 1.25rem; line-height: 1.75rem; }
}

@media (min-width: 1024px) {
    .lg-grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg-text-xl { font-size: 1.25rem; line-height: 1.75rem; }
}