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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    border: 3px solid #FFD700;
}

header {
    background: linear-gradient(135deg, #FFD700 0%, #FFC107 100%);
    text-align: center;
    padding: 40px 20px;
    color: #1a1a1a;
}

header h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 10px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 600;
}

main {
    padding: 40px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.upload-section {
    text-align: center;
    margin-bottom: 40px;
}

.upload-btn {
    display: inline-block;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #FFD700;
    padding: 20px 40px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(26, 26, 26, 0.3);
    border: 2px solid #FFD700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.upload-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(26, 26, 26, 0.4);
    background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 100%);
    color: #FFF;
    border-color: #FFC107;
}

.upload-btn input {
    display: none;
}

.editor-section {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: start;
}

.canvas-container {
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-radius: 15px;
    padding: 20px;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.3);
    border: 2px solid #FFD700;
}

#preview-canvas {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.3);
}

.controls {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border: 2px solid #FFD700;
}

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

.control-group label {
    display: block;
    font-weight: 600;
    color: #FFD700;
    margin-bottom: 8px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.control-group input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #444;
    outline: none;
    margin-bottom: 5px;
    border: 1px solid #FFD700;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #FFD700 0%, #FFC107 100%);
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(255, 215, 0, 0.5);
    border: 2px solid #1a1a1a;
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #FFD700 0%, #FFC107 100%);
    cursor: pointer;
    border: 2px solid #1a1a1a;
    box-shadow: 0 2px 10px rgba(255, 215, 0, 0.5);
}

.control-group span {
    font-size: 0.9rem;
    color: #FFC107;
    font-weight: 600;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}

.action-buttons button {
    padding: 15px 20px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid transparent;
}

#reset-btn {
    background: linear-gradient(135deg, #FFD700 0%, #FFC107 100%);
    color: #1a1a1a;
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.3);
    border-color: #FFB300;
}

#reset-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
    background: linear-gradient(135deg, #FFC107 0%, #FFB300 100%);
}

#download-btn {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #FFD700;
    box-shadow: 0 5px 20px rgba(26, 26, 26, 0.3);
    border-color: #FFD700;
}

#download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26, 26, 26, 0.4);
    background: linear-gradient(135deg, #2d2d2d 0%, #424242 100%);
    color: #FFF;
}

@media (max-width: 768px) {
    .editor-section {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    main {
        padding: 20px;
    }
    
    .controls {
        order: -1;
    }
}