:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-primary: #f9fafb;
    --bg-secondary: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Pages */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* Login Page */
#loginPage.active {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, #7c3aed 100%);
}

.login-box {
    background: var(--bg-secondary);
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 100%;
}

.login-box h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    text-align: center;
    color: var(--primary-color);
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Navbar */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Main Content */
.main-content {
    padding: 2rem 0;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-icon {
    padding: 0.5rem;
    font-size: 1.25rem;
    background: transparent;
    border: 1px solid var(--border-color);
}

.btn-icon:hover {
    background: var(--bg-primary);
}

/* Upload Section */
.upload-section {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 1rem;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.drop-zone-text {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.drop-zone-subtext {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.drop-zone-formats {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Upload Config */
.upload-config {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.upload-config h3 {
    margin-bottom: 1.5rem;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.upload-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* Upload Progress */
.upload-progress {
    margin-top: 2rem;
}

.progress-bar {
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s;
    width: 0%;
}

#uploadProgressText {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Jobs Section */
.jobs-section {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.jobs-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 3rem;
}

/* Job Card */
.job-card {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    transition: all 0.2s;
}

.job-card:hover {
    box-shadow: var(--shadow);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.job-title {
    font-weight: 600;
    font-size: 1.125rem;
}

.job-status {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-pending {
    background: #fef3c7;
    color: #92400e;
}

.status-processing {
    background: #dbeafe;
    color: #1e40af;
}

.status-completed {
    background: #d1fae5;
    color: #065f46;
}

.status-failed {
    background: #fee2e2;
    color: #991b1b;
}

.job-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.job-info-item {
    font-size: 0.875rem;
}

.job-info-label {
    color: var(--text-secondary);
    display: block;
}

.job-info-value {
    font-weight: 500;
}

.job-progress {
    margin-bottom: 1rem;
}

.job-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-danger {
    background: var(--error-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

/* Utility classes */
.hidden {
    display: none !important;
}

.error {
    background: #fee2e2;
    color: #991b1b;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .config-grid {
        grid-template-columns: 1fr;
    }
    
    .job-info {
        grid-template-columns: 1fr;
    }
    
    .upload-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}