:root {
    --primary-color: #8a2be2;
    --secondary-color: #00ffff;
    --background-dark: #121212;
    --background-light: #1e1e1e;
    --text-color: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 0 20px rgba(138, 43, 226, 0.3);
    --neon-glow: 0 0 10px rgba(0, 255, 255, 0.7), 0 0 20px rgba(0, 255, 255, 0.5), 0 0 30px rgba(0, 255, 255, 0.3);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-dark);
    color: var(--text-color);
    line-height: 1.6;
}

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

h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(138, 43, 226, 0.5);
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.generator-form {
    background-color: var(--background-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

input[type="text"] {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    background-color: var(--background-dark);
    color: var(--text-color);
    font-size: 1rem;
}

input[type="text"]:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--secondary-color);
}

.size-options {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.size-btn {
    padding: 0.5rem 1rem;
    background-color: var(--background-dark);
    border: 2px solid var(--primary-color);
    color: var(--text-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

.size-btn:hover {
    background-color: var(--primary-color);
}

.size-btn.active {
    background-color: var(--primary-color);
    box-shadow: var(--neon-glow);
}

.generate-btn {
    display: block;
    width: 100%;
    padding: 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.generate-btn:hover {
    box-shadow: var(--neon-glow);
    transform: translateY(-2px);
}

.loading-container {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 2rem 0;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(138, 43, 226, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 1rem;
}

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

.results {
    display: none;
    margin-top: 2rem;
}

.logos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.logo-item {
    background-color: var(--background-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    position: relative;
}

.logo-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
}

.logo-item img {
    width: 100%;
    height: auto;
    display: block;
}

.logo-detail {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(18, 18, 18, 0.9);
    z-index: 1000;
    overflow-y: auto;
}

.detail-container {
    max-width: 800px;
    margin: 2rem auto;
    background-color: var(--background-light);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: transparent;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 2rem;
    min-height: 300px;
}

#selected-logo-preview img {
    max-width: 100%;
    max-height: 400px;
    display: block;
}

.download-options {
    text-align: center;
}

.download-options h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.download-btn {
    padding: 0.8rem 1.5rem;
    margin: 0.5rem;
    background-color: var(--primary-color);
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background-color: var(--secondary-color);
    color: var(--background-dark);
    box-shadow: var(--neon-glow);
}

.back-btn {
    padding: 0.8rem 1.5rem;
    margin-top: 1rem;
    background-color: transparent;
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    color: var(--secondary-color);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background-color: var(--secondary-color);
    color: var(--background-dark);
}

footer {
    text-align: center;
    padding: 1.5rem;
    margin-top: 3rem;
    background-color: var(--background-light);
    border-top: 1px solid var(--primary-color);
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .logos-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .detail-container {
        margin: 1rem;
        padding: 1rem;
    }
    
    .size-options {
        flex-direction: column;
    }
}