:root {
    --bg-dark: #080A1A;
    --text-light: #E0E7FF;
    --accent-green: #00FF00;
    --accent-magenta: #FF007F;
    --glow-green: 0 0 15px var(--accent-green), 0 0 30px var(--accent-green), 0 0 50px var(--accent-green);
    --glow-magenta: 0 0 15px var(--accent-magenta), 0 0 30px var(--accent-magenta), 0 0 50px var(--accent-magenta);
    --card-bg: rgba(0, 255, 0, 0.05);
    --ai-bg: radial-gradient(circle at center, rgba(255, 0, 127, 0.15) 0%, rgba(8, 10, 26, 0.8) 100%);
}

/* Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Space Grotesk', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

.main-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Full-screen Sections */
.sect-full {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Hero Section */
#sect-intro {
    text-align: center;
    flex-direction: column;
    background-image: url('https://placehold.co/1920x1080/080A1A/E0E7FF?text=Galactic+Archives');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
    position: relative;
}

.intro-cont {
    text-align: center;
    animation: fadeIn 2s ease-in-out;
}

.intro-cont h1 {
    font-size: 5rem;
    font-family: 'Roboto Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 5px;
    text-shadow: var(--glow-magenta);
    margin-bottom: 1.5rem;
}

.intro-cont p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.btn-start {
    padding: 1rem 3rem;
    background: var(--accent-green);
    color: var(--bg-dark);
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    border-radius: 5px;
    text-transform: uppercase;
    box-shadow: 0 0 15px var(--accent-green);
    transition: all 0.3s ease;
}

.btn-start:hover {
    transform: translateY(-5px);
    box-shadow: var(--glow-green);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Content Sections */
.sect-cont {
    background-color: var(--bg-dark);
    padding: 3rem 0;
    display: block;
    min-height: 100vh;
}

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

.header-group h2 {
    font-size: 3rem;
    font-family: 'Roboto Mono', monospace;
    color: var(--accent-magenta);
    text-shadow: var(--glow-magenta);
    text-transform: uppercase;
    position: relative;
    animation: slideInFromLeft 1s ease-out;
}

.header-group p {
    max-width: 800px;
    margin: 1rem auto 0;
    font-size: 1rem;
}

@keyframes slideInFromLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Filter & Search */
.filter-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-bar input {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--accent-green);
    color: var(--text-light);
    padding: 0.75rem 1rem;
    border-radius: 5px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.filter-bar input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.filter-bar input:focus {
    border-color: var(--accent-magenta);
    box-shadow: 0 0 10px rgba(255, 0, 127, 0.5);
}

.filter-btns {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btns button {
    background: none;
    border: 2px solid var(--accent-green);
    color: var(--accent-green);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-family: 'Roboto Mono', monospace;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 5px rgba(0, 255, 0, 0.5);
}

.filter-btns button.active,
.filter-btns button:hover {
    background: var(--accent-green);
    color: var(--bg-dark);
    box-shadow: var(--glow-green);
    border-color: var(--accent-green);
}

/* Game Grid */
.grid-catalog {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 2rem;
    perspective: 1200px;
}

/* Desktop: 5 items per row at screens > 1400px */
@media (min-width: 1400px) {
    .grid-catalog {
        grid-template-columns: repeat(5, 1fr);
        gap: 1.5rem;
    }
}

/* Mobile: 2 items per row at screens < 768px */
@media (max-width: 768px) {
    .grid-catalog {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

/* Game Card */
.card-item {
    background: linear-gradient(145deg, var(--card-bg), rgba(0, 0, 0, 0.2));
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(0, 255, 0, 0.3);
    position: relative;
    transition: transform 0.5s ease, box-shadow 0.5s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    transform-style: preserve-3d;
    transform: translateZ(0);
}

/* New hover effect */
.card-item:hover {
    transform: scale(1.05) rotateY(5deg) translateZ(40px);
    box-shadow: var(--glow-green), var(--glow-magenta);
    z-index: 10;
}

.item-img-wrap {
    width: 100%;
    height: 200px;
    background-color: #222;
    overflow: hidden;
}

.item-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card-item:hover img {
    transform: scale(1.1);
}

.item-content {
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

.item-content h3 {
    font-family: 'Roboto Mono', monospace;
    font-size: 1.5rem;
    color: var(--accent-magenta);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.card-item:hover .item-content h3 {
    color: var(--accent-green);
}

.item-content p {
    color: #ccc;
    transition: color 0.3s ease;
}

.card-item:hover .item-content p {
    color: var(--text-light);
}

/* AI Section */
.sect-ai {
    background: var(--ai-bg);
    padding: 4rem;
    border-radius: 15px;
    border: 2px solid var(--accent-magenta);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
}

.sect-ai .header-group h2 {
    color: var(--accent-green);
    text-shadow: var(--glow-green);
}

.ai-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
    text-align: left;
}

.ai-details h3, .ai-details p, .ai-details ul {
    max-width: 800px;
}
.ai-details h3 {
    font-size: 1.5rem;
}
.ai-details p {
    margin-bottom: 1rem;
}
.ai-details ul {
    list-style-type: none;
}

/* About Section */
.sect-about {
    padding: 6rem 0;
    text-align: center;
}

/* Footer */
.page-foot {
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--accent-green);
    background-color: var(--bg-dark);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    font-family: 'Roboto Mono', monospace;
    text-transform: uppercase;
}

.footer-links a:hover {
    color: var(--accent-green);
    text-shadow: 0 0 5px var(--accent-green);
}

/* Responsive */
@media (max-width: 768px) {
    .intro-cont h1 {
        font-size: 3rem;
    }
    .intro-cont p {
        font-size: 1rem;
    }
    .header-group h2 {
        font-size: 2rem;
    }
    .filter-bar {
        flex-direction: column;
        gap: 1rem;
    }
}