@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --bg-color: #050505;
    --card-bg: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --neon-cyan: #00f2ff;
    --neon-pink: #ff007a;
    --cyan-glow: rgba(0, 242, 255, 0.5);
    --pink-glow: rgba(255, 0, 122, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 242, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 0, 122, 0.05) 0%, transparent 40%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.container {
    text-align: center;
    padding: 2rem;
    z-index: 1;
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
    background: linear-gradient(to right, var(--neon-cyan), var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 10px rgba(0, 242, 255, 0.3));
}

.status-container {
    margin-bottom: 2rem;
}

#status {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.game-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    background: var(--card-bg);
    padding: 15px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.cell {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.cell:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

.cell.x {
    color: var(--neon-cyan);
    text-shadow: 0 0 20px var(--cyan-glow);
}

.cell.o {
    color: var(--neon-pink);
    text-shadow: 0 0 20px var(--pink-glow);
}

.controls {
    margin-top: 2rem;
}

#reset-btn {
    padding: 0.8rem 2.5rem;
    font-size: 1rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

#reset-btn:hover {
    background: var(--text-primary);
    color: var(--bg-color);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

.cell span {
    animation: fadeIn 0.3s ease-out forwards;
}

.winner-cell {
    background: rgba(255, 255, 255, 0.1) !important;
    border-color: white !important;
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 480px) {
    h1 { font-size: 2.5rem; }
    .cell { width: 80px; height: 80px; font-size: 2rem; }
}