/* Global Styles - LogicLine Design System */
:root {
    --primary-orange: #FF6B2B;
    --primary-blue: #0066CC;
    --secondary-blue: #004499;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #F5F5F5;
    --bg-white: #FFFFFF;
    --border-color: #E0E0E0;
    --success-green: #28A745;
    --error-red: #DC3545;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto Slab', serif;
    font-weight: 600;
}

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

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 2rem;
    color: var(--primary-orange);
    margin: 0;
}

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

.user-info {
    font-weight: 500;
    color: var(--text-dark);
}

.logout-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--primary-blue);
    border-radius: 0;
    transition: all 0.3s ease;
}

.logout-link:hover {
    background-color: var(--primary-blue);
    color: white;
}

.powered-by {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-left: 1rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Upload Section */
.upload-section {
    background-color: var(--bg-white);
    border-radius: 0;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.upload-area {
    display: block;
    border: 2px dashed var(--border-color);
    border-radius: 0;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: var(--bg-light);
}

.upload-area:hover {
    border-color: var(--primary-orange);
    background-color: rgba(255, 107, 43, 0.05);
}

.upload-area.drag-over {
    border-color: var(--primary-orange);
    background-color: rgba(255, 107, 43, 0.1);
    transform: scale(1.02);
}

.upload-icon svg {
    color: var(--primary-orange);
    margin-bottom: 1rem;
}

.upload-area h2 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.upload-area p {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.file-types {
    font-size: 0.875rem;
    margin-top: 1rem;
}

.file-limit {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* Settings Section */
.settings-section {
    background-color: var(--bg-white);
    border-radius: 0;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.settings-section h3 {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

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

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.setting-group label {
    font-weight: 600;
    color: var(--text-dark);
}

/* Quality Presets */
.quality-presets {
    display: flex;
    gap: 0.5rem;
}

.preset-btn {
    flex: 1;
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    background-color: var(--bg-white);
    color: var(--text-dark);
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
}

.preset-btn:hover {
    border-color: var(--primary-orange);
    color: var(--primary-orange);
}

.preset-btn.active {
    background-color: var(--primary-orange);
    border-color: var(--primary-orange);
    color: white;
}

/* Quality Slider */
.quality-slider {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#qualitySlider {
    flex: 1;
    -webkit-appearance: none;
    height: 6px;
    border-radius: 0;
    background: var(--border-color);
    outline: none;
}

#qualitySlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 0;
    background: var(--primary-orange);
    cursor: pointer;
}

#qualitySlider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 0;
    background: var(--primary-orange);
    cursor: pointer;
    border: none;
}

#qualityValue {
    font-weight: 600;
    color: var(--primary-orange);
    min-width: 3rem;
}

/* Size Preview */
.size-preview {
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: var(--bg-light);
    border-radius: 0;
    font-size: 0.875rem;
}

.preview-label {
    color: var(--text-light);
    margin-right: 0.5rem;
}

.preview-value {
    font-weight: 600;
    color: var(--text-dark);
}

/* Form Controls */
.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-orange);
}

/* Custom Dimensions */
.custom-dimensions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.dimension-input {
    width: 100px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* File List */
.file-list {
    margin: 2rem 0;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 0;
    padding: 1rem;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.file-item:last-child {
    border-bottom: none;
}

.remove-btn {
    background: none;
    border: none;
    color: var(--error-red);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 0.5rem;
    line-height: 1;
}

.file-name {
    font-size: 0.875rem;
    color: var(--text-dark);
}

.file-size {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background-color: #E55A1B;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 107, 43, 0.3);
}

.btn-secondary {
    background-color: var(--bg-white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.action-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.download-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

/* Results Section */
.results-section {
    background-color: var(--bg-white);
    border-radius: 0;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.results-list {
    margin: 2rem 0;
}

.results-summary {
    margin-bottom: 1.5rem;
}

.info-box {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background-color: rgba(0, 102, 204, 0.05);
    border: 1px solid rgba(0, 102, 204, 0.2);
    border-radius: 4px;
}

.info-box .info-icon {
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0;
    margin-bottom: 1rem;
    background-color: var(--bg-light);
}

.result-info {
    flex: 1;
}

.result-filename {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.result-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.compression-rate {
    color: var(--success-green);
    font-weight: 600;
}

.compression-rate.kept-original {
    color: var(--primary-blue);
    background-color: rgba(0, 102, 204, 0.1);
    padding: 0.125rem 0.5rem;
    border-radius: 3px;
}

.kept-original-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background-color: rgba(0, 102, 204, 0.05);
    border-left: 3px solid var(--primary-blue);
    font-size: 0.875rem;
    color: var(--text-dark);
}

.kept-original-note .info-icon {
    flex-shrink: 0;
}

.dimension-info {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

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

.download-btn {
    padding: 0.5rem 1rem;
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
}

.download-btn:hover {
    background-color: var(--secondary-blue);
}

.result-item.error {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: var(--error-red);
}

.error-message {
    color: var(--error-red);
    font-size: 0.875rem;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--primary-orange);
    border-radius: 0;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.loading-overlay p {
    color: white;
    font-size: 1.25rem;
}

/* Footer */
.footer {
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 1rem 0;
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Mode Selection */
.mode-selection {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.mode-selection label {
    display: block;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.mode-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.mode-btn {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--border-color);
    background-color: var(--bg-white);
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.mode-btn:hover {
    border-color: var(--primary-blue);
    background-color: rgba(0, 102, 204, 0.05);
}

.mode-btn.active {
    border-color: var(--primary-blue);
    background-color: var(--primary-blue);
    color: white;
}

.mode-btn svg {
    flex-shrink: 0;
}

.mode-description {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
    line-height: 1.5;
}

/* Compression Settings */
.compression-presets {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.compression-slider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.compression-slider input[type="range"] {
    flex: 1;
}

.compression-slider span {
    font-weight: 600;
    color: var(--primary-blue);
    min-width: 2rem;
    text-align: center;
}

.setting-note {
    font-size: 0.75rem;
    color: var(--text-light);
    margin: 0;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .quality-presets {
        flex-direction: column;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .result-item {
        flex-direction: column;
        gap: 1rem;
    }
    
    .mode-buttons {
        flex-direction: column;
    }
    
    .compression-presets {
        flex-direction: column;
    }
}