:root {
    --neon-blue: #00f3ff;
    --neon-orange: #ff7b00;
    --neon-green: #00ff66;
    --bg-color: #050510;
    --panel-bg: rgba(20, 20, 35, 0.6);
    --text-color: #ffffff;
    --text-muted: #8888a0;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(0, 243, 255, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(255, 123, 0, 0.08), transparent 25%),
        radial-gradient(circle at 50% 80%, rgba(0, 255, 102, 0.05), transparent 30%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.app-container {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 2rem;
    align-items: start;
}

header {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 1rem;
}

.neon-text {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: 4px;
    color: #fff;
    text-shadow: 
        0 0 5px #fff,
        0 0 10px #fff,
        0 0 20px var(--neon-blue),
        0 0 40px var(--neon-blue),
        0 0 80px var(--neon-blue);
    margin-bottom: 0.5rem;
    animation: pulsate 2.5s infinite alternate;
}

@keyframes pulsate {
    100% {
        text-shadow: 
            0 0 4px #fff,
            0 0 11px #fff,
            0 0 19px var(--neon-blue),
            0 0 40px var(--neon-blue),
            0 0 80px var(--neon-blue);
    }
    0% {
        text-shadow: 
            0 0 2px #fff,
            0 0 4px #fff,
            0 0 6px var(--neon-blue),
            0 0 10px var(--neon-blue),
            0 0 45px var(--neon-blue);
    }
}

header p {
    color: var(--text-muted);
    font-weight: 300;
    letter-spacing: 1px;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.controls-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

input[type="file"] {
    display: none;
}

.custom-file-upload {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px dashed rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-color) !important;
}

.custom-file-upload:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.2);
}

.file-name {
    font-size: 0.8rem;
    color: var(--neon-green);
    text-align: center;
    word-break: break-all;
}

select {
    appearance: none;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
}

select:focus {
    border-color: var(--neon-orange);
    box-shadow: 0 0 15px rgba(255, 123, 0, 0.2);
}

select option {
    background: var(--bg-color);
    color: white;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(100%);
}

.primary-btn {
    background: linear-gradient(45deg, var(--neon-blue), #0077ff);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 243, 255, 0.3);
}

.primary-btn:not(:disabled):hover {
    box-shadow: 0 6px 25px rgba(0, 243, 255, 0.6);
    transform: translateY(-2px);
}

.secondary-btn {
    background: linear-gradient(45deg, var(--neon-green), #00aa44);
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 255, 102, 0.3);
}

.secondary-btn:not(:disabled):hover {
    box-shadow: 0 6px 25px rgba(0, 255, 102, 0.6);
    transform: translateY(-2px);
}

.danger-btn {
    background: linear-gradient(45deg, #ff0055, #aa0000);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 0, 85, 0.3);
}

.danger-btn:not(:disabled):hover {
    box-shadow: 0 6px 25px rgba(255, 0, 85, 0.6);
    transform: translateY(-2px);
}

.status-container {
    margin-top: 1rem;
    text-align: center;
}

#status-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.progress-bar-container {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-green));
    transition: width 0.1s linear;
}

.preview-panel {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.canvas-wrapper {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Responsiveness */
@media (max-width: 900px) {
    .app-container {
        grid-template-columns: 1fr;
    }
    
    .controls-panel {
        order: 2;
    }
    
    .preview-panel {
        order: 1;
    }
}