:root {
    --bg-color: #0a0a0c;
    --panel-bg: rgba(255, 255, 255, 0.05);
    --accent-x: #00f2ff;
    --accent-o: #ff00ea;
    --accent-gold: #ffcc00;
    --text-main: #ffffff;
    --text-dim: #a0a0a0;
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    background: radial-gradient(circle at center, #1a1a2e 0%, #0a0a0c 100%);
}

.container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
    text-align: center;
}

header {
    margin-bottom: 30px;
}

.logo-text {
    font-size: 4.5rem;
    font-weight: 900;
    letter-spacing: 5px;
    background: linear-gradient(to bottom, #fff 0%, var(--accent-x) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(0, 242, 255, 0.6);
    margin: 0;
    line-height: 1;
}

.subtitle {
    font-size: 0.75rem;
    color: var(--accent-gold);
    text-transform: uppercase;
    letter-spacing: 4px;
    font-weight: bold;
    text-shadow: 0 0 10px rgba(255, 204, 0, 0.7);
    margin-top: 5px;
    opacity: 1;
    animation: gold-glow 2s ease-in-out infinite alternate;
}

@keyframes gold-glow {
    from {
        text-shadow: 0 0 5px var(--accent-gold);
    }

    to {
        text-shadow: 0 0 20px var(--accent-gold), 0 0 30px #fff;
    }
}

.navale-side-link {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 255, 65, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid #00ff41;
    border-right: none;
    padding: 20px 10px;
    border-radius: 20px 0 0 20px;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
    box-shadow: -5px 0 20px rgba(0, 255, 65, 0.2);
}

.navale-side-link:hover {
    padding-right: 20px;
    background: rgba(0, 255, 65, 0.2);
    box-shadow: -5px 0 30px rgba(0, 255, 65, 0.4);
}

.bn-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 5px #00ff41);
}

.bn-text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    color: #00ff41;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.8rem;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.hidden {
    display: none !important;
}

/* Setup Screen */
#setup-screen {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.status-icon {
    font-size: 4rem;
    margin-bottom: 10px;
}

.primary-btn {
    background: linear-gradient(45deg, var(--accent-x), #00a2ff);
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    color: white;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-transform: uppercase;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 242, 255, 0.4);
}

.input-group {
    margin-bottom: 10px;
}

#nickname-input {
    width: 100%;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    font-family: inherit;
    font-size: 1.1rem;
    text-align: center;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#nickname-input:focus {
    border-color: var(--accent-x);
    box-shadow: 0 0 15px rgba(0, 242, 255, 0.2);
}

.loader {
    width: 40px;
    height: 40px;
    border: 3px solid var(--glass-border);
    border-top: 3px solid var(--accent-x);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* Game Screen */
.scoreboard {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
}

.player-score {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.player-score .symbol {
    font-size: 1.5rem;
    font-weight: bold;
}

.player-score .symbol.x {
    color: var(--accent-x);
    text-shadow: 0 0 10px var(--accent-x);
}

.player-score .symbol.o {
    color: var(--accent-o);
    text-shadow: 0 0 10px var(--accent-o);
}

.player-score .points {
    font-size: 2rem;
    font-weight: bold;
}

.vs {
    font-weight: bold;
    color: var(--text-dim);
}

#turn-indicator {
    padding: 10px;
    margin-bottom: 20px;
    font-weight: bold;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 0 auto;
    width: 100%;
    aspect-ratio: 1/1;
}

.cell {
    background: var(--panel-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}

.cell:hover:not(:empty) {
    cursor: default;
}

.cell:hover:empty {
    background: rgba(255, 255, 255, 0.1);
}

.cell.x {
    color: var(--accent-x);
    text-shadow: 0 0 15px var(--accent-x);
    animation: pop 0.3s ease-out;
}

.cell.o {
    color: var(--accent-o);
    text-shadow: 0 0 15px var(--accent-o);
    animation: pop 0.3s ease-out;
}

@keyframes pop {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }

    80% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Overlay */
#result-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.result-content {
    width: 80%;
    max-width: 400px;
}

#result-title {
    font-size: 2.5rem;
    margin-bottom: 10px;
}