/* Logo Vectorizer Pro - Styles */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
}

/* Header Melhorado */
.header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.header::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    background: var(--primary-gradient);
    border-radius: 50%;
    opacity: 0.1;
    z-index: -1;
}

.title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.tech-note {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    opacity: 0.8;
}

/* Upload Section Melhorada */
.upload-section {
    margin-bottom: 2rem;
}

.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s;
}

.upload-area:hover::before {
    left: 100%;
}

.upload-area:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.02);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.upload-area.dragover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.05);
    transform: scale(1.02);
}

.upload-icon {
    width: 64px;
    height: 64px;
    color: #667eea;
    margin-bottom: 1rem;
}

.upload-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.upload-content small {
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Image Preview Melhorado */
.image-preview {
    position: relative;
    display: inline-block;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    background: var(--bg-secondary);
    padding: 1rem;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--border-radius);
    display: block;
}

.remove-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    color: #e53e3e;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.remove-btn:hover {
    background: #e53e3e;
    color: white;
    transform: scale(1.1);
}

/* Color Palette Section */
.color-palette-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-light);
}

.color-palette {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.color-swatch {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-light);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.color-swatch.selected {
    border-color: #667eea;
    transform: scale(1.1);
}

.color-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.color-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
}

/* Controls Section Avançada */
.controls-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-light);
}

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

.control-category {
    background: rgba(102, 126, 234, 0.02);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.control-category h4 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.control-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    margin-bottom: 0.5rem;
    cursor: pointer;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-medium);
}

.control-value {
    font-weight: 600;
    color: #667eea;
    font-size: 0.9rem;
}

.control-group small {
    display: block;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* Presets */
.presets-section {
    margin-bottom: 2rem;
}

.presets-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.preset-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.preset-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 20px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
    font-weight: 500;
}

.preset-btn:hover {
    border-color: #667eea;
    color: #667eea;
    transform: translateY(-1px);
}

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

/* Vectorize Button */
.vectorize-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.vectorize-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

.vectorize-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Result Section Avançada */
.result-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-light);
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: rgba(102, 126, 234, 0.02);
    border-radius: var(--border-radius);
}

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

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 1.2rem;
    font-weight: 600;
    color: #667eea;
}

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

.preview-item h4 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.preview-box {
    background: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 1rem;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.preview-box img,
.preview-box svg {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
}

.image-info {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* View Controls */
.view-controls {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.view-btn {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.view-btn:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

/* Download Section */
.download-section {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.download-btn,
.copy-btn,
.new-image-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-btn.primary {
    background: var(--success-gradient);
    color: white;
}

.download-btn.secondary {
    background: var(--secondary-gradient);
    color: white;
}

.copy-btn {
    background: var(--dark-gradient);
    color: white;
}

.new-image-btn {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    border: 2px solid #667eea;
}

.download-btn:hover,
.copy-btn:hover,
.new-image-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Status Message */
.status-message {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    z-index: 1000;
    transform: translateX(100%);
    transition: var(--transition);
    max-width: 300px;
}

.status-message.show {
    transform: translateX(0);
}

.status-message.success {
    background: var(--success-gradient);
}

.status-message.error {
    background: var(--secondary-gradient);
}

.status-message.info {
    background: var(--primary-gradient);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(10px);
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-spinner-large {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.loading-progress {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    margin: 1rem auto 0;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--success-gradient);
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .controls-grid {
        grid-template-columns: 1fr;
    }
    
    .preview-container {
        grid-template-columns: 1fr;
    }
    
    .download-section {
        flex-direction: column;
    }
    
    .preset-buttons {
        justify-content: center;
    }
}

/* SVG Styling */
#svgPreview svg {
    shape-rendering: geometricPrecision;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Grid overlay para visualização */
.preview-box.grid-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(102, 126, 234, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 126, 234, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
}