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

body {
    font-family: 'Rajdhani', sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    color: #ffffff;
    min-height: 100vh;
    overflow-x: hidden;
}

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

.header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(45deg, #00f5ff, #ff00ff, #ffff00);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.subtitle {
    font-size: 1.2rem;
    color: #00f5ff;
    margin-top: 10px;
    opacity: 0.8;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    align-items: start;
}

.preview-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.convert-link {
    display: inline-block;
    padding: 12px 24px;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #10b981, #059669);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.convert-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

#previewCanvas {
    width: 100%;
    max-width: 800px;
    height: auto;
    display: block;
    border-radius: 10px;
    background: #00ff00;
    border: 2px solid #00f5ff;
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.3);
}

.preview-controls {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.controls-panel {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-height: 80vh;
    overflow-y: auto;
}

.control-group {
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.control-group h3 {
    font-family: 'Orbitron', monospace;
    color: #00f5ff;
    margin-bottom: 15px;
    font-size: 1.3rem;
    text-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.effect-category {
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border-left: 3px solid #ff00ff;
}

.effect-category h4 {
    color: #ff00ff;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(45deg, #00f5ff, #0080ff);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 245, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 245, 255, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-export {
    background: linear-gradient(45deg, #ff00ff, #ff0080);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 0, 255, 0.3);
    width: 100%;
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 0, 255, 0.5);
}

.checkbox-container {
    display: block;
    position: relative;
    padding-left: 35px;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 1rem;
    user-select: none;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid #00f5ff;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.checkbox-container:hover input ~ .checkmark {
    background: rgba(0, 245, 255, 0.2);
}

.checkbox-container input:checked ~ .checkmark {
    background: linear-gradient(45deg, #00f5ff, #ff00ff);
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg);
}

.slider-group {
    margin-bottom: 15px;
}

.slider-group label {
    display: block;
    margin-bottom: 8px;
    color: #00f5ff;
    font-weight: 600;
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
    margin-bottom: 10px;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(45deg, #00f5ff, #ff00ff);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(45deg, #00f5ff, #ff00ff);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.file-input {
    display: none;
}

.file-label {
    display: inline-block;
    padding: 12px 24px;
    background: linear-gradient(45deg, #ff00ff, #ff0080);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.file-label:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 0, 255, 0.5);
}

.text-input, .select-input {
    width: 100%;
    padding: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    font-family: 'Rajdhani', sans-serif;
    font-size: 1rem;
    margin-top: 10px;
}

.text-input:focus, .select-input:focus {
    outline: none;
    border-color: #00f5ff;
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.3);
}

.export-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

/* Scrollbar Styling */
.controls-panel::-webkit-scrollbar {
    width: 8px;
}

.controls-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.controls-panel::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, #00f5ff, #ff00ff);
    border-radius: 4px;
}

.controls-panel::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, #ff00ff, #00f5ff);
}

/* Animation for value displays */
#flickerSpeedValue, #durationValue, #intensityValue {
    color: #ff00ff;
    font-weight: 600;
    margin-left: 10px;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .controls-panel {
        max-height: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .logo {
        font-size: 2rem;
    }
    
    .preview-controls {
        flex-wrap: wrap;
    }
    
    .export-options {
        grid-template-columns: 1fr;
    }
}