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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.logo i {
    font-size: 2.5rem;
    color: #e74c3c;
}

.logo h1 {
    font-size: 2.2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    color: #666;
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 25px;
    margin-bottom: 30px;
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* Cards */
.card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    margin-bottom: 25px;
}

.card h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.card h2 i {
    color: #3498db;
}

/* Upload Section */
.upload-section .description {
    color: #666;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.upload-area {
    border: 3px dashed #3498db;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8fafc;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.upload-area:hover {
    background: #e3f2fd;
    border-color: #2980b9;
}

.upload-area.highlight {
    background: #e1f5fe;
    border-color: #0288d1;
}

.upload-icon {
    font-size: 3rem;
    color: #3498db;
}

.upload-text {
    font-size: 1.2rem;
    font-weight: 500;
    color: #2c3e50;
}

.upload-subtext {
    color: #666;
    font-size: 0.9rem;
}

.file-info {
    color: #7f8c8d;
    font-size: 0.85rem;
    margin-top: 10px;
}

/* File Info */
.file-info-container {
    margin-top: 20px;
}

.selected-file {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #e8f4fc;
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid #3498db;
}

.selected-file i {
    color: #e74c3c;
    font-size: 1.2rem;
}

.selected-file span {
    flex: 1;
    font-weight: 500;
    color: #2c3e50;
}

.btn-remove {
    background: #ff6b6b;
    color: white;
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-remove:hover {
    background: #ff5252;
}

/* Controls */
.controls-section {
    margin-top: 20px;
}

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

.control-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-weight: 500;
    color: #2c3e50;
}

#summaryRatio {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    background: linear-gradient(to right, #4CAF50, #FFC107, #F44336);
    border-radius: 4px;
    outline: none;
}

#summaryRatio::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    background: #3498db;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    color: #666;
    font-size: 0.9rem;
}

/* Buttons */
.btn-group {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex: 1;
}

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

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 7px 14px rgba(102, 126, 234, 0.3);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: #ecf0f1;
    color: #2c3e50;
}

.btn-secondary:hover {
    background: #d5dbdb;
    transform: translateY(-2px);
}

.btn-download {
    background: #2ecc71;
    color: white;
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-download:hover {
    background: #27ae60;
}

.btn-copy {
    background: #3498db;
    color: white;
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-copy:hover {
    background: #2980b9;
}

/* Results Section */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.results-content {
    min-height: 400px;
    position: relative;
}

.placeholder-content {
    text-align: center;
    padding: 60px 20px;
    color: #7f8c8d;
}

.placeholder-content i {
    font-size: 4rem;
    color: #bdc3c7;
    margin-bottom: 20px;
}

.placeholder-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #95a5a6;
}

.summary-header {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid #ecf0f1;
}

.summary-header h3 {
    color: #2c3e50;
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.summary-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.badge-high {
    background: #ffebee;
    color: #c62828;
}

.badge-medium {
    background: #fff3e0;
    color: #ef6c00;
}

.badge-low {
    background: #e8f5e9;
    color: #2e7d32;
}

.badge i {
    font-size: 0.9rem;
}

.summary-text {
    line-height: 1.8;
    color: #34495e;
    font-size: 1.05rem;
    white-space: pre-wrap;
    max-height: 500px;
    overflow-y: auto;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #3498db;
}

/* Statistics */
.stats-section .stats-placeholder {
    text-align: center;
    padding: 40px 20px;
    color: #95a5a6;
}

.stats-section .stats-placeholder i {
    font-size: 3rem;
    margin-bottom: 15px;
    color: #bdc3c7;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 10px;
    transition: transform 0.3s;
}

.stat-item:hover {
    transform: translateY(-3px);
    background: #e3f2fd;
}

.stat-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.85rem;
    color: #7f8c8d;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
}

/* Tips Section */
.tips-list {
    list-style: none;
    padding: 0;
}

.tips-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #ecf0f1;
    color: #555;
}

.tips-list li:last-child {
    border-bottom: none;
}

.tips-list i {
    color: #2ecc71;
    font-size: 1rem;
}

/* Error Message */
.error-message {
    text-align: center;
    padding: 40px 20px;
    color: #c0392b;
}

.error-message i {
    font-size: 3rem;
    margin-bottom: 20px;
}

.error-message h3 {
    margin-bottom: 15px;
    font-size: 1.4rem;
}

/* Loader */
.loader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.loader p {
    color: #3498db;
    font-weight: 500;
    font-size: 1.1rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 15px 25px;
    border-radius: 10px;
    color: white;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    max-width: 350px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-success {
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
}

.toast-error {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
}

.toast-info {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: #7f8c8d;
    font-size: 0.9rem;
    background: white;
    border-radius: 15px;
    margin-top: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.footer i {
    color: #e74c3c;
    margin: 0 5px;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .logo h1 {
        font-size: 1.8rem;
    }
    
    .main-content {
        gap: 15px;
    }
    
    .card {
        padding: 20px;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-download, .btn-copy {
        width: 100%;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6b4198 100%);
}