:root {
    --primary: #8a2be2;
    --primary-glow: #bc13fe;
    --accent: #00f2ff;
    --bg-dark: #0f0c29;
    --bg-gradient: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-main: #e0e0e0;
    --text-dim: #b0b0b0;
    --white: #ffffff;
    --error: #ff4d4d;
    --success: #00ff88;
}

* {
    box-sizing: border-box;
    transition: all 0.3s ease;
}

body {
    font-family: 'Poppins', sans-serif, system-ui;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-main);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    overflow-x: hidden;
}

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

@keyframes glow {
    0% { box-shadow: 0 0 5px var(--primary); }
    50% { box-shadow: 0 0 20px var(--primary-glow); }
    100% { box-shadow: 0 0 5px var(--primary); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* --- Navigation --- */
nav {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
    cursor: pointer;
}

#auth-nav button, #user-nav button {
    margin-left: 1rem;
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--primary);
    border-radius: 8px;
    cursor: pointer;
    background: transparent;
    color: var(--white);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

#auth-nav button:hover, #user-nav button:hover {
    background: var(--primary);
    box-shadow: 0 0 15px var(--primary-glow);
    transform: scale(1.05);
}

#user-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#user-email {
    font-size: 0.9rem;
    color: var(--text-dim);
}

/* --- Main Content --- */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

.section {
    animation: fadeIn 0.6s ease forwards;
}

/* --- Hero Section --- */
.hero {
    text-align: center;
    margin-bottom: 4rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(to bottom, #fff, #aaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-dim);
}

/* --- Games Grid --- */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.game-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2rem;
    border-radius: 24px;
    backdrop-filter: blur(5px);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: linear-gradient(to right, var(--primary), var(--accent));
}

.game-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--primary-glow);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    background: rgba(255, 255, 255, 0.08);
}

.game-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.game-card p {
    color: var(--text-dim);
    margin-bottom: 1.5rem;
}

.game-card button {
    padding: 0.8rem 2rem;
    background: linear-gradient(45deg, var(--primary), var(--primary-glow));
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    width: 100%;
    box-shadow: 0 4px 15px rgba(138, 43, 226, 0.3);
}

.game-card button:hover {
    filter: brightness(1.2);
    box-shadow: 0 0 20px var(--primary-glow);
}

/* --- Auth Cards --- */
.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 3rem;
    border-radius: 30px;
    backdrop-filter: blur(15px);
    max-width: 450px;
    margin: 0 auto;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}

.auth-card h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--white);
}

form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

input {
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--white);
    outline: none;
}

input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(0, 242, 255, 0.3);
}

button[type="submit"] {
    padding: 1rem;
    background: linear-gradient(45deg, var(--primary), var(--primary-glow));
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 1rem;
}

.auth-card p {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-dim);
}

.auth-card a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.auth-card a:hover {
    text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    nav { padding: 1rem; }
    .logo { font-size: 1.4rem; }
}