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

:root {
    --x-color: #ff5a6e;
    --o-color: #4ecdc4;
    --bg-dark: #1a1a2e;
    --bg-card: #16213e;
    --bg-board: #0f3460;
    --text-light: #eaeaea;
    --text-dim: #a0a0b0;
    --gold: #f5c542;
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --font-display: 'Bangers', cursive;
    --font-body: 'Nunito', sans-serif;
}

body {
    min-height: 100vh;
    background: var(--bg-dark);
    color: var(--text-light);
    font-family: var(--font-body);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(78,205,196,0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(255,90,110,0.08) 0%, transparent 60%);
}

#game-wrapper {
    width: 100%;
    max-width: 440px;
    padding: 16px;
}

#game-container {
    background: var(--bg-card);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 28px 24px 32px;
    position: relative;
    overflow: hidden;
}

#game-header {
    text-align: center;
    margin-bottom: 18px;
}
#game-header h1 {
    font-family: var(--font-display);
    font-size: 2.2rem;
    letter-spacing: 3px;
    color: var(--text-light);
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.subtitle {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-top: 2px;
}

#scoreboard {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 14px;
}
.player-score {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.04);
    border-radius: 14px;
    padding: 10px 16px;
    flex: 1;
}
.player-score:first-child {
    justify-content: flex-end;
    flex-direction: row-reverse;
}
.player-icon {
    font-size: 1.6rem;
    line-height: 1;
}
.score-info {
    text-align: center;
}
.player-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
}
.player-score:first-child .score-value { color: var(--x-color); }
.player-score:last-child  .score-value { color: var(--o-color); }
.score-value {
    font-family: var(--font-display);
    font-size: 1.8rem;
    line-height: 1.2;
}
.draw-score {
    text-align: center;
    min-width: 50px;
}
.draw-label {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
}
.draw-score .score-value {
    color: var(--text-dim);
    font-family: var(--font-display);
    font-size: 1.4rem;
}

#turn-indicator {
    text-align: center;
    margin-bottom: 16px;
    min-height: 28px;
}
#current-turn {
    display: inline-block;
    font-weight: 700;
    font-size: 1rem;
    padding: 4px 18px;
    border-radius: 20px;
    background: rgba(255,255,255,0.06);
    transition: color 0.3s, background 0.3s;
}
#current-turn.x-turn {
    color: var(--x-color);
    background: rgba(255,90,110,0.12);
}
#current-turn.o-turn {
    color: var(--o-color);
    background: rgba(78,205,196,0.12);
}

#game-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    background: var(--bg-board);
    border-radius: 18px;
    padding: 12px;
    margin-bottom: 20px;
}
.cell {
    aspect-ratio: 1;
    background: var(--bg-card);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.8rem;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s, transform 0.1s;
    position: relative;
    overflow: hidden;
}
.cell:hover:not(.taken) {
    background: rgba(255,255,255,0.06);
    transform: scale(1.03);
}
.cell.taken { cursor: default; }
.cell.x { color: var(--x-color); text-shadow: 0 0 12px rgba(255,90,110,0.4); }
.cell.o { color: var(--o-color); text-shadow: 0 0 12px rgba(78,205,196,0.4); }

.cell.win {
    animation: winPulse 0.6s ease forwards;
}
@keyframes winPulse {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.12); }
    70%  { transform: scale(0.96); }
    100% { transform: scale(1); background: rgba(245,197,66,0.15); }
}

#controls {
    display: flex;
    gap: 10px;
    justify-content: center;
}
#controls button {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.88rem;
    padding: 9px 22px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, filter 0.2s;
}
#reset-btn {
    background: linear-gradient(135deg, var(--x-color), #e84565);
    color: #fff;
    box-shadow: 0 4px 14px rgba(255,90,110,0.35);
}
#reset-scores-btn {
    background: rgba(255,255,255,0.08);
    color: var(--text-dim);
}
#controls button:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}
#controls button:active { transform: translateY(0); }

#winner-message {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(22,33,62,0.92);
    border-radius: 24px;
    align-items: center;
    justify-content: center;
    z-index: 10;
    backdrop-filter: blur(6px);
    animation: fadeIn 0.3s ease;
}
#winner-message.show { display: flex; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.message-content {
    text-align: center;
    animation: popIn 0.35s cubic-bezier(.34,1.56,.64,1);
}
@keyframes popIn {
    0%   { transform: scale(0.7); opacity: 0; }
    100% { transform: scale(1);   opacity: 1; }
}
.message-content h2 {
    font-family: var(--font-display);
    font-size: 2.4rem;
    letter-spacing: 2px;
    margin-bottom: 6px;
}
.message-content h2.x-win { color: var(--x-color); }
.message-content h2.o-win { color: var(--o-color); }
.message-content h2.draw  { color: var(--gold); }

#winner-combo {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 18px;
}
#play-again-btn {
    font-family: var(--font-body);
    font-weight: 900;
    font-size: 1rem;
    padding: 10px 32px;
    border: none;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--gold), #e6b530);
    color: #1a1a2e;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(245,197,66,0.4);
    transition: transform 0.15s, filter 0.2s;
}
#play-again-btn:hover { transform: translateY(-2px); filter: brightness(1.1); }

#start-screen {
    display: none;
    position: absolute;
    inset: 0;
    background: var(--bg-card);
    border-radius: 24px;
    align-items: center;
    justify-content: center;
    z-index: 20;
    animation: fadeIn 0.4s ease;
}
#start-screen.show { display: flex; }

.start-content {
    text-align: center;
    padding: 20px;
    width: 100%;
}
.start-content > h1 {
    font-family: var(--font-display);
    font-size: 2.2rem;
    letter-spacing: 3px;
    margin-bottom: 18px;
}
.welcome-box {
    background: rgba(255,255,255,0.04);
    border-radius: 18px;
    padding: 20px;
    margin-bottom: 22px;
}
.welcome-box h2 {
    font-size: 1.2rem;
    color: var(--gold);
    margin-bottom: 10px;
}
.how-to-play h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    margin-bottom: 8px;
}
.how-to-play p {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 5px;
    line-height: 1.5;
}
.how-to-play strong { color: var(--text-light); }

.player-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 18px;
}
.player-box {
    background: rgba(255,255,255,0.05);
    border-radius: 14px;
    padding: 12px 20px;
}
.player-box .big-icon {
    font-size: 2rem;
    display: block;
}
.player-box p {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 4px;
}
.vs {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--gold);
    letter-spacing: 2px;
}

#start-btn {
    font-family: var(--font-body);
    font-weight: 900;
    font-size: 1.05rem;
    padding: 12px 48px;
    border: none;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--x-color), #e84565);
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 18px rgba(255,90,110,0.4);
    transition: transform 0.15s, filter 0.2s;
}
#start-btn:hover { transform: translateY(-2px); filter: brightness(1.15); }

@media (max-width: 380px) {
    #game-container { padding: 20px 16px 24px; }
    .cell { font-size: 2.2rem; }
    #game-header h1 { font-size: 1.7rem; }
}