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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.form-section {
    padding: 40px;
}

.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.input-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

.input-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 0.9rem;
}

.btn-primary, .btn-success {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

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

.btn-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(17, 153, 142, 0.4);
}

.spinner {
    animation: spin 1s linear infinite;
}

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

#progressSection {
    padding: 0 40px 40px;
}

.section {
    margin-bottom: 30px;
}

.section h2 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #667eea;
}

.pages-list {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    max-height: 300px;
    overflow-y: auto;
}

.page-item {
    padding: 4px 8px;           /* era 8px 12px */
    margin-bottom: 3px;          /* era 8px */
    background: white;
    border-radius: 6px;
    border-left: 4px solid #667eea;
    font-size: 0.9rem;
    word-break: break-all;
}

.log-area {
    background: #1e1e1e;
    color: #d4d4d4;
    border-radius: 8px;
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 12px;             /* era 14px */
    line-height: 1.3;            /* era 1.6 */
}

.log-entry {
    margin-bottom: 2px;          /* era 8px */
    padding: 2px 0;              /* era 4px 0 */
}

.log-entry.info {
    color: #4ec9b0;
}

.log-entry.warning {
    color: #dcdcaa;
}

.log-entry.error {
    color: #f48771;
}

.log-entry .timestamp {
    color: #858585;
    margin-right: 10px;
}

.download-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid #e0e0e0;
}

/* Scrollbar personalizzata */
.log-area::-webkit-scrollbar,
.pages-list::-webkit-scrollbar {
    width: 8px;
}

.log-area::-webkit-scrollbar-track {
    background: #2d2d2d;
    border-radius: 4px;
}

.log-area::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 4px;
}

.pages-list::-webkit-scrollbar-track {
    background: #e0e0e0;
    border-radius: 4px;
}

.pages-list::-webkit-scrollbar-thumb {
    background: #999;
    border-radius: 4px;
}

/* Barra di avanzamento */
.progress-container {
    margin-bottom: 30px;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: 600;
    color: #333;
}

.progress-bar-container {
    width: 100%;
    height: 30px;
    background: #e0e0e0;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}