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

:root {
    --primary-color: #5b21b6;
    --primary-hover: #4c1d95;
    --secondary-color: #ec4899;
    --secondary-hover: #db2777;
    --bg-color: #faf5ff;
    --text-color: #1f2937;
    --border-color: #e9d5ff;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.125rem;
    color: #6b7280;
}

.feature-highlight {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-top: 0.5rem;
    font-weight: 600;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: .7;
    }
}

.lang-selector {
    position: absolute;
    top: 0;
    right: 0;
}

#langSelect {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background-color: var(--card-bg);
    cursor: pointer;
}

.upload-area {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
    border: 2px dashed var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.upload-area.drag-over {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(236, 72, 153, 0.2) 100%);
    transform: scale(1.02);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    width: 4rem;
    height: 4rem;
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
    stroke: url(style.css);
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.upload-text {
    font-size: 1.125rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.upload-hint {
    font-size: 0.875rem;
    color: #6b7280;
}

.controls {
    background-color: var(--card-bg);
    padding: 1.25rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    display: grid;
    gap: 1rem;
}

.control-group {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.control-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.95rem;
}

.emoji-hint {
    font-size: 1.2rem;
}

.range-labels {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.label-left, .label-right {
    font-size: 0.75rem;
    color: #6b7280;
    font-weight: 500;
}

.range-labels input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: linear-gradient(to right, var(--border-color) 0%, var(--primary-color) 50%, var(--secondary-color) 100%);
    border-radius: 3px;
    outline: none;
}

.value-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    border: none;
}

.value-display > span {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1rem;
}

.control-group small.hint {
    font-size: 0.75rem;
    color: #6b7280;
    font-style: italic;
}

.process-btn, .download-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: 0.875rem 2.5rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 1rem;
    box-shadow: 0 4px 6px -1px rgba(91, 33, 182, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.process-btn:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--secondary-hover) 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(91, 33, 182, 0.4);
}

.download-btn {
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
}

.download-btn:hover {
    background: linear-gradient(135deg, #059669 0%, #2563eb 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(16, 185, 129, 0.4);
}

.preview-container {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.preview-wrapper {
    position: relative;
    display: inline-block;
}

#canvas {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.features {
    margin-top: 4rem;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

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

.feature-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color);
}

.feature-item svg {
    width: 3rem;
    height: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    stroke: url(style.css);
}

.feature-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-item p {
    color: #6b7280;
}

footer {
    text-align: center;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: #6b7280;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .upload-area {
        padding: 2rem;
    }
    
    .lang-selector {
        position: static;
        margin-top: 1rem;
    }
}