.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    width: 100%;
}

.title-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.title {
    font-size: 44px;
    font-weight: 800;
    color: var(--color-text-dark);
    letter-spacing: 0.5px;
    line-height: 1;
}

.subtitle {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-dark);
    opacity: 0.65;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.score-box {
    position: relative;
    background: var(--color-board);
    color: var(--color-text-light);
    padding: 8px 22px;
    border-radius: var(--radius-md);
    min-width: 72px;
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.3;
}

.score-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    opacity: 0.75;
}

.score-value {
    font-size: 24px;
    font-weight: 800;
    display: inline-block;
}

.score-pulse {
    animation: scorePulse 220ms ease-out;
}

@keyframes scorePulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.22); }
    100% { transform: scale(1); }
}

.score-gain {
    position: absolute;
    top: -2px;
    left: 50%;
    color: var(--color-accent);
    font-weight: 800;
    font-size: 15px;
    pointer-events: none;
    animation: scoreGainFloat 700ms ease-out forwards;
}

@keyframes scoreGainFloat {
    0% { opacity: 1; transform: translate(-50%, 0); }
    100% { opacity: 0; transform: translate(-50%, -28px); }
}

.reset-btn {
    background: var(--color-accent);
    color: var(--color-text-light);
    padding: 12px 26px;
    border: none;
    border-radius: var(--radius-pill);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-lift);
    transition: background 0.2s, transform 0.1s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.reset-btn:hover {
    background: var(--color-accent-hover);
}

.reset-btn:active {
    transform: scale(0.95);
}