/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.nav-brand h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

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

.user-greeting {
    color: white;
    font-size: 0.95rem;
}

.badge-pro {
    background: #ffd700;
    color: #333;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
}

.btn-large {
    padding: 0.9rem 2rem;
    font-size: 1.1rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: #667eea;
}

/* Pricing Section */
.pricing {
    padding: 4rem 0;
    background: #f8f9fa;
}

.pricing h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
}

.pricing-card-featured {
    transform: scale(1.05);
    border: 3px solid #667eea;
}

.pricing-card .badge {
    position: absolute;
    top: -15px;
    right: 20px;
    background: #667eea;
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 1.5rem;
}

.price span {
    font-size: 1.2rem;
    font-weight: 400;
    color: #666;
}

.pricing-features {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: #555;
}

/* Auth Pages */
.auth-box {
    max-width: 450px;
    margin: 4rem auto;
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.1);
}

.auth-box h1 {
    text-align: center;
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 2rem;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.form-group small {
    display: block;
    margin-top: 0.3rem;
    color: #666;
    font-size: 0.85rem;
}

.auth-box button {
    width: 100%;
    margin-top: 1rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: #666;
}

.auth-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

.alert-error {
    background: #fee;
    color: #c33;
    border-left: 4px solid #c33;
}

.alert-success {
    background: #efe;
    color: #3c3;
    border-left: 4px solid #3c3;
}

.alert-info {
    background: #e3f2fd;
    color: #1976d2;
    border-left: 4px solid #1976d2;
}

.alert a {
    color: inherit;
    font-weight: 600;
    text-decoration: underline;
}

/* Dashboard */
.dashboard-container {
    padding: 2rem 0 4rem;
}

.dashboard-header {
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.upload-section {
    margin-bottom: 3rem;
}

.upload-box {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.upload-box h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.upload-info {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.file-input-wrapper {
    margin-bottom: 1.5rem;
}

.file-input-wrapper input[type="file"] {
    display: none;
}

.file-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    border: 3px dashed #ddd;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    background: #fafafa;
}

.file-label:hover {
    border-color: #667eea;
    background: #f0f4ff;
}

.file-icon {
    font-size: 2rem;
}

.file-text {
    font-size: 1.1rem;
    color: #667eea;
    font-weight: 500;
}

.file-name {
    display: none;
    margin-top: 1rem;
    padding: 0.8rem;
    background: #e8f0fe;
    border-radius: 6px;
    color: #1976d2;
    text-align: center;
    font-weight: 500;
}

.loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: #e0e0e0;
    border-radius: 15px;
    overflow: hidden;
    margin: 1.5rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: width 0.3s;
    width: 0%;
}

.progress-text {
    text-align: center;
    color: #666;
    font-weight: 500;
}

/* File Queue & Batch Processing */
.file-queue {
    margin: 1.5rem 0;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.file-item {
    background: white;
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.file-item:last-child {
    margin-bottom: 0;
}

.file-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.file-name-text {
    font-weight: 500;
    color: #333;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 1rem;
}

.file-size-text {
    color: #666;
    font-size: 0.9rem;
}

.file-status {
    margin-bottom: 0.5rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status-pending {
    background: #f0f0f0;
    color: #666;
}

.status-processing {
    background: #fff3cd;
    color: #856404;
}

.status-completed {
    background: #d4edda;
    color: #155724;
}

.status-failed {
    background: #f8d7da;
    color: #721c24;
}

.file-progress {
    margin-top: 0.5rem;
}

.file-progress .progress-bar {
    height: 6px;
    margin: 0;
}

.overall-status {
    text-align: center;
    padding: 1.5rem;
    background: #f0f4ff;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.overall-status h3 {
    margin: 0 0 0.5rem 0;
    color: #667eea;
    font-size: 1.3rem;
}

.overall-status p {
    margin: 0;
    color: #666;
    font-size: 1rem;
}

/* Results Container */
.results-container {
    margin-top: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.results-container h3 {
    margin: 0 0 1rem 0;
    color: #333;
    font-size: 1.5rem;
}

.results-summary {
    padding: 1rem;
    background: #e8f0fe;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.results-summary p {
    margin: 0;
    color: #1976d2;
    font-weight: 500;
}

.result-item {
    background: white;
    padding: 1.25rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.result-item:last-child {
    margin-bottom: 0;
}

.result-success {
    border-left: 4px solid #28a745;
}

.result-error {
    border-left: 4px solid #dc3545;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.result-icon {
    font-size: 1.5rem;
    color: #28a745;
}

.error-icon {
    color: #dc3545;
}

.result-filename {
    font-weight: 500;
    color: #333;
    flex: 1;
}

.size-info {
    display: flex;
    gap: 1.5rem;
    padding: 0.75rem;
    background: #f0f4ff;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.size-info span {
    color: #666;
}

.error-message {
    color: #721c24;
    margin: 0.5rem 0;
    font-size: 0.95rem;
}

.btn-small {
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
}

/* Info Section */
.info-section {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.info-section h2 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #333;
    text-align: center;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.step {
    text-align: center;
}

.step-number {
    width: 50px;
    height: 50px;
    background: #667eea;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.step p {
    color: #666;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .features h2, .pricing h2 {
        font-size: 1.8rem;
    }
    
    .pricing-card-featured {
        transform: scale(1);
    }
    
    .auth-box {
        margin: 2rem auto;
        padding: 2rem;
    }
    
    .upload-box {
        padding: 1.5rem;
    }
    
    .nav-links {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
}