style.css

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;700&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
    --desktop: #020204;
    --window: #0a0a0f;
    --surface: #141418;
    --element: #0d0d12;
    --glass: rgba(8, 8, 12, 0.85);

    --primary: #ff003c;
    --primary-dark: #b3002a;
    --primary-light: #ff3366;
    --cyan: #00f0ff;
    --orange: #ffaa00;
    --yellow: #fcee0a;
    --success: #33ff00;
    --danger: #ff003c; /* Using primary as danger context too */
    
    --text: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.4);
    
    --border: rgba(255, 255, 255, 0.08);
    --border-active: rgba(255, 0, 60, 0.45);
    
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
    --glow: 0 0 30px rgba(255, 0, 60, 0.08);
    --text-glow: 0 0 10px var(--primary), 0 0 20px var(--primary);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--desktop);
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 32px 32px;
    color: var(--text);
    min-height: 100vh;
    padding: 2rem;
    line-height: 1.6;
}

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

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease-out;
}

header h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-family: 'JetBrains Mono', monospace;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    animation: fadeIn 0.8s ease-out;
}

/* Upload Section */
.upload-section {
    background: var(--surface);
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.upload-area {
    border: 1px dashed var(--text-secondary);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--element);
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(255, 0, 60, 0.05);
}

.upload-area.drag-over {
    border-color: var(--primary);
    background: rgba(255, 0, 60, 0.1);
    box-shadow: var(--glow);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: var(--text);
    stroke-width: 1;
}

.upload-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.upload-subtext {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: 'Inter', sans-serif;
}

.preview-container {
    position: relative;
    margin-top: 1.5rem;
    background: var(--element);
    border: 1px solid var(--border);
}

.preview-container img {
    width: 100%;
    height: auto;
    display: block;
}

.remove-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    background: var(--surface);
    color: var(--primary);
    border: 1px solid var(--primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-btn:hover {
    background: var(--primary);
    color: var(--text);
    box-shadow: var(--glow);
}

/* Options Panel */
.options-panel {
    background: var(--surface);
    padding: 2rem;
    border: 1px solid var(--border);
    max-height: 85vh;
    overflow-y: auto;
}

.options-panel::-webkit-scrollbar {
    width: 4px;
}

.options-panel::-webkit-scrollbar-track {
    background: var(--window);
}

.options-panel::-webkit-scrollbar-thumb {
    background: var(--text-secondary);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px dashed var(--border);
}

.settings-icon {
    width: 24px;
    height: 24px;
    color: var(--text);
    stroke-width: 1.5;
}

.panel-header h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.option-group {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--element);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.option-group:hover {
    border-color: var(--text-secondary);
}

.option-label {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--text);
    text-transform: uppercase;
}

.option-description {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Radio Buttons */
.radio-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.radio-group-triple {
    gap: 0.5rem;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    flex: 1;
    min-width: fit-content;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
}

.radio-option:hover {
    border-color: var(--primary);
    background: rgba(255, 0, 60, 0.05);
}

.radio-option input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 14px;
    height: 14px;
    border: 1px solid var(--text-secondary);
    position: relative;
    transition: all 0.2s ease;
    border-radius: 0;
}

.radio-option input[type="radio"]:checked ~ .radio-custom {
    border-color: var(--primary);
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

.radio-option input[type="radio"]:checked ~ span:last-child {
    color: var(--primary);
    text-shadow: 0 0 5px rgba(255, 0, 60, 0.5);
}

/* Sliders */
.slider-container {
    position: relative;
    padding: 1rem 0;
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: var(--surface);
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 10px var(--primary);
    border-radius: 0;
}

.slider-value {
    position: absolute;
    top: -12px;
    right: 0;
    background: var(--element);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 0.25rem 0.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
}

/* Convert Button */
.convert-btn {
    width: 100%;
    padding: 1.25rem;
    background: var(--element);
    color: var(--primary);
    border: 1px solid var(--primary);
    font-family: 'Space Grotesk', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all 0.2s ease;
    margin-top: 2rem;
}

.convert-btn:hover:not(:disabled) {
    background: var(--primary);
    color: var(--text);
    box-shadow: var(--glow);
    text-shadow: var(--text-glow);
}

.convert-btn:disabled {
    opacity: 0.3;
    border-color: var(--text-secondary);
    color: var(--text-secondary);
    cursor: not-allowed;
}

.btn-icon {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

/* Output Section */
.output-section {
    grid-column: 1 / -1;
    background: var(--surface);
    padding: 2rem;
    border: 1px solid var(--border);
    animation: fadeIn 0.6s ease-out;
}

.output-section h2 {
    font-family: 'Space Grotesk', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.output-preview {
    background: var(--element);
    border: 1px dashed var(--text-secondary);
    padding: 2rem;
    margin-bottom: 1.5rem;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.output-preview svg {
    max-width: 100%;
    max-height: 500px;
    filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.2));
}

.output-actions {
    display: flex;
    gap: 1rem;
}

.action-btn {
    flex: 1;
    padding: 1rem;
    background: var(--element);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.action-btn svg {
    width: 18px;
    height: 18px;
    stroke-width: 1.5;
}

.download-btn:hover {
    border-color: var(--success);
    color: var(--success);
    box-shadow: 0 0 15px rgba(51, 255, 0, 0.2);
}

.copy-btn:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* Credits Section */
.credits {
    margin-top: 3rem;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.credits a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

.credits a:hover {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(255, 0, 60, 0.4);
}

.credits .heart {
    color: var(--primary);
    display: inline-block;
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    15% { transform: scale(1.15); }
    30% { transform: scale(1); }
    45% { transform: scale(1.15); }
    60% { transform: scale(1); }
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .upload-section, .options-panel, .output-section {
        padding: 1.5rem;
    }
    
    .radio-group {
        flex-direction: column;
    }
    
    .output-actions {
        flex-direction: column;
    }
}