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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    min-height: 100vh;
    padding: 2rem;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    z-index: 0;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(50px, 50px);
    }
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
    z-index: 0;
}

.container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.back-button {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 10;
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.8rem 1.2rem;
    color: #ffffff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.back-button:hover {
    background: rgba(30, 30, 30, 0.8);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateX(-5px);
}

.back-button svg {
    width: 20px;
    height: 20px;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
}

.subtitle {
    font-size: 1.2rem;
    color: #a0a0a0;
    font-weight: 300;
}

.search-container {
    margin-bottom: 3rem;
}

.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    left: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    stroke: #667eea;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 1.2rem 1.5rem 1.2rem 3.5rem;
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.2);
}

.search-input::placeholder {
    color: #606060;
}

.help-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.category {
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.category:hover {
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.category-icon {
    width: 50px;
    height: 50px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.category-icon svg {
    width: 28px;
    height: 28px;
    stroke: #667eea;
}

.category-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
}

.category-links {
    list-style: none;
}

.category-links li {
    margin-bottom: 0.7rem;
}

.category-links a {
    color: #a0a0a0;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    display: block;
    padding: 0.3rem 0;
}

.category-links a:hover {
    color: #667eea;
    padding-left: 0.5rem;
}

.category-links a::before {
    content: '→';
    margin-right: 0.5rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.category-links a:hover::before {
    opacity: 1;
}

.no-results {
    text-align: center;
    padding: 3rem;
    color: #606060;
    font-size: 1.1rem;
    display: none;
}

.no-results.show {
    display: block;
}

@media (max-width: 768px) {
    body {
        padding: 1.5rem;
    }

    .logo {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .search-input {
        padding: 1rem 1rem 1rem 3rem;
        font-size: 0.95rem;
    }

    .help-categories {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .category {
        padding: 1.5rem;
    }

    .category-title {
        font-size: 1.1rem;
    }
}