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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 50%, #0d0d2b 100%);
    min-height: 100vh;
    color: #e0e0e0;
    padding: 2rem;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

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

.header h1 {
    font-size: 3rem;
    font-weight: 300;
    background: linear-gradient(90deg, #00d4ff, #7b2fff, #ff2d95);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.subtitle {
    color: #888;
    font-size: 1.1rem;
    font-weight: 300;
}

.controls {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
}

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

.control-group label {
    font-size: 0.9rem;
    color: #aaa;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 150px;
    height: 6px;
    background: linear-gradient(90deg, #00d4ff33, #7b2fff33);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #00d4ff, #7b2fff);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
    transition: transform 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    width: 50px;
    height: 35px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: transparent;
    overflow: hidden;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #00d4ff;
    cursor: pointer;
}

.value-display {
    background: rgba(0, 212, 255, 0.2);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #00d4ff;
    min-width: 40px;
    text-align: center;
}

.generate-btn {
    background: linear-gradient(135deg, #00d4ff, #7b2fff);
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 212, 255, 0.5);
}

.generate-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.generate-btn:hover .btn-icon {
    transform: rotate(180deg);
}

.canvas-container {
    position: relative;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 16px;
    padding: 1rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3),
                inset 0 0 60px rgba(0, 212, 255, 0.05);
}

#hilbertCanvas {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: #00d4ff;
}

.loading.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 212, 255, 0.2);
    border-top-color: #00d4ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 0.3rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(90deg, #00d4ff, #7b2fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.info-panel {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.info-panel h2 {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: #00d4ff;
}

.info-panel p {
    color: #aaa;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.info-panel strong {
    color: #e0e0e0;
}

.formula {
    background: rgba(0, 212, 255, 0.1);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    color: #00d4ff;
    text-align: center;
    border-left: 3px solid #00d4ff;
}

.formula sup {
    font-size: 0.8em;
}

@media (max-width: 600px) {
    body {
        padding: 1rem;
    }

    .header h1 {
        font-size: 2rem;
    }

    .controls {
        padding: 1rem;
    }

    input[type="range"] {
        width: 100px;
    }

    .stats {
        gap: 1rem;
    }

    .stat-item {
        padding: 0.8rem 1rem;
    }
}

/* Footer & Social Media */
.footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #aaa;
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.social-link svg {
    stroke: currentColor;
    transition: all 0.3s ease;
}

.social-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.social-link:hover svg {
    stroke: #00d4ff;
}

.copyright {
    color: #666;
    font-size: 0.8rem;
}

@media (max-width: 600px) {
    .social-links {
        gap: 1rem;
    }
    
    .social-link {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}