/* PDFruit Styles */

/* CSS Variables */
:root {
    --primary-color: #007AFF;
    --secondary-color: #34C759;
    --error-color: #FF3B30;
    --warning-color: #FF9500;
    --text-color: #1D1D1F;
    --text-secondary: #86868B;
    --background-color: #F5F5F7;
    --card-background: #FFFFFF;
    --border-color: #E5E5E7;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.banner-logo {
    max-width: 100%;
    height: auto;
    max-height: 120px;
    margin-bottom: 20px;
}

/* About Section */
.about-section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
}

.about-intro, .about-solution {
    padding: 20px;
    border-radius: 8px;
    background: var(--background-color);
}

.about-features {
    grid-column: 1 / -1;
    padding: 20px;
    border-radius: 8px;
    background: var(--background-color);
}

.about-cta {
    grid-column: 1 / -1;
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 8px;
    color: white;
}

.about-section h2 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.about-cta h2 {
    color: white;
}

.about-section p {
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 0;
}

.about-cta p {
    color: white;
    font-weight: 500;
    font-size: 1.1rem;
    margin-bottom: 0;
}

.features-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: var(--card-background);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.features-list li:hover {
    box-shadow: var(--shadow-light);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    flex-shrink: 0;
}

.feature-text {
    color: var(--text-color);
    font-weight: 500;
    line-height: 1.4;
}

/* Main Content */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Sections */
section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
}

section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-color);
}

/* Upload Section */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(0, 122, 255, 0.05);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background-color: rgba(0, 122, 255, 0.1);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-secondary);
}

.upload-content h3 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin: 0;
}

.upload-content p {
    color: var(--text-secondary);
    margin: 0;
}

/* Palette Section */
.palette-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.palette-header h3 {
    margin: 0;
}

.palette-section.creation-mode .palette-grid {
    opacity: 0.3;
    pointer-events: none;
    transition: var(--transition);
}

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

.toggle-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-color);
}

.toggle-checkbox {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 50px;
    height: 24px;
    background: var(--border-color);
    border-radius: 12px;
    transition: var(--transition);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-checkbox:checked + .toggle-slider {
    background: var(--primary-color);
}

.toggle-checkbox:checked + .toggle-slider::before {
    transform: translateX(26px);
}

.toggle-text {
    font-weight: 500;
    user-select: none;
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.palette-option {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--card-background);
}

.palette-option:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-medium);
}

.palette-option.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
}

.palette-option.create-custom {
    border: 2px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    text-align: center;
    background: var(--background-color);
}

.palette-option.create-custom:hover {
    border-color: var(--primary-color);
    background: rgba(0, 122, 255, 0.05);
}

.palette-option.create-custom .create-custom-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.palette-option.create-custom .create-custom-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.palette-option.create-custom .create-custom-text {
    font-weight: 500;
    color: var(--text-color);
}

.palette-actions {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: var(--transition);
}

.palette-option:hover .palette-actions {
    opacity: 1;
}

.palette-action-btn {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 50%;
    background: var(--card-background);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.palette-action-btn:hover {
    background: var(--error-color);
    color: white;
}

.palette-action-btn.edit:hover {
    background: var(--primary-color);
    color: white;
}

.custom-badge {
    background: var(--primary-color);
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

.palette-colors {
    position: relative;
    width: 45px;
    height: 30px;
    display: flex;
    align-items: center;
}

.palette-background {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.palette-text-color {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    position: absolute;
    right: 0;
    z-index: 2;
}

.palette-text {
    font-size: 1.5rem;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.palette-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.palette-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.default-badge {
    background: var(--secondary-color);
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Custom Palette Creation Panel */
.custom-palette-panel {
    margin-top: 30px;
    padding: 25px;
    background: var(--background-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.custom-palette-panel h4 {
    margin: 0 0 20px 0;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
}

.custom-palette-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 200px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input[type="text"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    background: var(--card-background);
    color: var(--text-color);
}

.form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
}

.color-input-group {
    display: flex;
    gap: 10px;
    align-items: center;
}

.color-input-group input[type="color"] {
    width: 50px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    background: none;
}

.color-input-group input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input-group input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

.color-input-group input[type="text"] {
    flex: 1;
    font-family: monospace;
    font-size: 0.9rem;
}

.palette-preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--card-background);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.palette-preview-live {
    display: flex;
    align-items: center;
    gap: 10px;
}

.palette-colors-live {
    position: relative;
    width: 45px;
    height: 30px;
    display: flex;
    align-items: center;
}

.palette-background-live {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.palette-text-color-live {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    position: absolute;
    right: 0;
    z-index: 2;
}

.palette-text-live {
    font-size: 1.5rem;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    min-width: 60px;
    text-align: center;
}

.contrast-info {
    text-align: center;
    font-size: 0.9rem;
}

.contrast-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.contrast-value {
    font-weight: 600;
    color: var(--text-color);
    margin: 0 5px;
}

.contrast-rating {
    padding: 2px 6px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.contrast-rating.excellent {
    background: var(--secondary-color);
    color: white;
}

.contrast-rating.good {
    background: var(--warning-color);
    color: white;
}

.contrast-rating.poor {
    background: var(--error-color);
    color: white;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 10px;
}

.secondary-button {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.secondary-button:hover {
    background: var(--border-color);
    color: var(--text-color);
}

.error-message {
    color: var(--error-color);
    font-size: 0.8rem;
    margin-top: 5px;
    min-height: 1.2em;
}

/* Settings Section */
.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.settings-header h3 {
    margin: 0;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.setting-item label {
    font-weight: 500;
    color: var(--text-color);
}

.setting-item input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
}

.setting-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

.setting-item input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.setting-item select {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--card-background);
    color: var(--text-color);
    font-size: 1rem;
}

/* Preview Section */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.preview-page {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--card-background);
}

.preview-page-header {
    background: var(--background-color);
    padding: 10px;
    text-align: center;
    font-weight: 500;
    color: var(--text-secondary);
}

.preview-page-content {
    padding: 10px;
}

.preview-page-content img {
    width: 100%;
    height: auto;
    border-radius: 6px;
    box-shadow: var(--shadow-light);
}

/* Progress Section */
.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 0.3s ease;
}

#progressText {
    text-align: center;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Actions Section */
.actions-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.primary-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-width: 200px;
}

.primary-button:hover {
    background: #0056CC;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.primary-button:active {
    transform: translateY(0);
}

.primary-button:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}


/* Footer */
.footer {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
}

.footer p {
    margin-bottom: 10px;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--card-background);
    padding: 30px;
    border-radius: var(--border-radius);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-medium);
    margin: 20px;
}

.modal-content h3 {
    color: var(--error-color);
    margin-bottom: 15px;
}

#warningModal .modal-content h3 {
    color: #ff9800;
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.close:hover {
    color: var(--text-color);
}

.modal-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.modal-buttons .button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-width: 100px;
}

.modal-buttons .button:hover {
    background: #0056CC;
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.modal-buttons .button:active {
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header h1 {
        font-size: 2.5rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    section {
        padding: 20px;
    }
    
    .upload-area {
        padding: 40px 15px;
        min-height: 150px;
    }
    
    .palette-grid {
        grid-template-columns: 1fr;
    }

    .palette-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .palette-controls {
        width: 100%;
        justify-content: center;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .preview-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .actions-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .primary-button {
        min-width: auto;
        width: 100%;
    }
    
    .custom-palette-panel {
        padding: 20px;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-group {
        min-width: auto;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .secondary-button {
        width: 100%;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .features-list {
        grid-template-columns: 1fr;
    }
    
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .upload-area {
        padding: 30px 10px;
        min-height: 120px;
    }
    
    .upload-icon {
        font-size: 2rem;
    }
    
    .upload-content h3 {
        font-size: 1.1rem;
    }
    
    .preview-grid {
        grid-template-columns: 1fr;
    }
    
    .about-section {
        padding: 20px;
    }
    
    .about-intro, .about-solution, .about-features, .about-cta {
        padding: 15px;
    }
    
    .feature-icon {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
    
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

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

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.text-error {
    color: var(--error-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-success {
    color: var(--secondary-color);
}

.mb-20 {
    margin-bottom: 20px;
}

.mt-20 {
    margin-top: 20px;
}