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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 2rem;
    color: #667eea;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ef4444;
    animation: pulse 2s infinite;
}

.status-dot.connected {
    background: #10b981;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Main Content */
.main {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

/* Configuration Panel */
.config-panel {
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    border: 1px solid #e2e8f0;
}

.config-panel h3 {
    color: #475569;
    margin-bottom: 20px;
    font-weight: 600;
}

.config-row {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

.config-row:last-child {
    margin-bottom: 0;
}

.config-row label {
    font-weight: 500;
    min-width: 100px;
    color: #475569;
}

.input-group {
    position: relative;
    flex: 1;
}

.input-group input {
    width: 100%;
    padding: 12px 45px 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.toggle-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #64748b;
    cursor: pointer;
    padding: 8px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.toggle-btn:hover {
    background: #f1f5f9;
}

select {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    background: white;
    transition: all 0.3s ease;
}

select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    background: #f8fafc;
    padding: 5px;
    border-radius: 15px;
}

.tab-btn {
    flex: 1;
    padding: 15px 20px;
    background: transparent;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    color: #64748b;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.tab-btn.active {
    background: white;
    color: #667eea;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.tab-btn:hover:not(.active) {
    color: #475569;
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.input-section h3 {
    color: #475569;
    margin-bottom: 20px;
    font-weight: 600;
}

/* URL Input */
.url-input-group {
    margin-bottom: 20px;
}

.url-input-group input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.url-input-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.url-types {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.url-type {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    background: #f1f5f9;
    border-radius: 20px;
    font-size: 14px;
    color: #475569;
}

/* Upload Area */
.upload-area {
    border: 3px dashed #cbd5e1;
    border-radius: 15px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.upload-area:hover {
    border-color: #667eea;
    background: #f8faff;
}

.upload-area.dragover {
    border-color: #667eea;
    background: #f0f4ff;
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3rem;
    color: #cbd5e1;
    margin-bottom: 15px;
}

.upload-area:hover .upload-icon {
    color: #667eea;
}

.browse-text {
    color: #667eea;
    font-weight: 600;
    cursor: pointer;
}

.upload-info {
    font-size: 14px;
    color: #64748b;
    margin-top: 10px;
}

#fileInput {
    display: none;
}

/* File List */
.file-list {
    margin-top: 20px;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px;
    background: #f8fafc;
    border-radius: 10px;
    margin-bottom: 10px;
    border-left: 4px solid #667eea;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.file-icon {
    font-size: 1.5rem;
    color: #667eea;
}

.file-details h4 {
    font-weight: 500;
    color: #374151;
}

.file-details p {
    font-size: 14px;
    color: #6b7280;
}

.remove-file {
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.remove-file:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* Questions Section */
.questions-section {
    margin: 30px 0;
}

.questions-section h3 {
    color: #475569;
    margin-bottom: 20px;
    font-weight: 600;
}

.question-item {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    align-items: center;
}

.question-input {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.question-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.remove-question {
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.remove-question:hover {
    background: #dc2626;
    transform: scale(1.1);
}

.add-question-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 25px;
    background: linear-gradient(45deg, #10b981, #059669);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.add-question-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 20px;
    margin: 30px 0;
}

.process-btn {
    flex: 2;
    padding: 18px 30px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.process-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.process-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.clear-btn {
    flex: 1;
    padding: 18px 30px;
    background: #f8fafc;
    color: #64748b;
    border: 2px solid #e2e8f0;
    border-radius: 15px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.clear-btn:hover {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
    transform: translateY(-2px);
}

/* Loading Indicator */
.loading-indicator {
    display: none;
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border-radius: 15px;
    margin: 30px 0;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e2e8f0;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    margin-top: 20px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(45deg, #667eea, #764ba2);
    width: 0%;
    animation: progress 3s ease-in-out infinite;
}

@keyframes progress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* Results Section */
.results-section {
    display: none;
    margin-top: 30px;
}

.results-section h3 {
    color: #475569;
    margin-bottom: 20px;
    font-weight: 600;
}

.processing-info {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
    border-left: 4px solid #0ea5e9;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.info-item {
    text-align: center;
}

.info-item h4 {
    font-size: 24px;
    font-weight: 700;
    color: #0369a1;
    margin-bottom: 5px;
}

.info-item p {
    font-size: 14px;
    color: #64748b;
}

.answers-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.answer-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #667eea;
    transition: all 0.3s ease;
}

.answer-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.answer-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    color: #475569;
    font-weight: 600;
}

.answer-content {
    font-size: 16px;
    line-height: 1.6;
    color: #374151;
}

/* Example Cards */
.examples-section {
    margin-top: 40px;
}

.examples-section h3 {
    color: #475569;
    margin-bottom: 25px;
    font-weight: 600;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.example-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid #f1f5f9;
}

.example-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border-color: #667eea;
}

.example-card i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 15px;
}

.example-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 10px;
}

.example-card p {
    color: #64748b;
    font-size: 14px;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 25px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: #64748b;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: #667eea;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.toast {
    background: white;
    border-radius: 10px;
    padding: 15px 20px;
    margin-bottom: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    border-left: 4px solid #10b981;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s ease;
    min-width: 300px;
}

.toast.error {
    border-left-color: #ef4444;
}

.toast.warning {
    border-left-color: #f59e0b;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .header-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .config-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .config-row label {
        min-width: auto;
    }

    .action-buttons {
        flex-direction: column;
    }

    .examples-grid {
        grid-template-columns: 1fr;
    }

    .footer {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .tabs {
        flex-direction: column;
    }

    .question-item {
        flex-direction: column;
        align-items: stretch;
    }

    .remove-question {
        align-self: flex-end;
        margin-top: 10px;
    }
}