/* ============================================================
   VRT.CSS — MIRA Division Reaction Test (Optimized)
   ============================================================ */

.vrt-wrapper {
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.vrt-target {
    width: 100%;
    aspect-ratio: 1 / 1;
    max-width: 400px;
    margin: 0 auto 30px;
    background: var(--dark-bg);
    border: 3px solid rgba(0, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    /* Remove transitions on properties that change during the test to eliminate paint delay */
    transition: none;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
    /* Hardware acceleration hint */
    will-change: background-color, border-color, box-shadow;
}

.vrt-target.waiting {
    background: #1a1a1a;
    border-color: rgba(255, 85, 0, 0.5);
    box-shadow: var(--orange-glow);
}

.vrt-target.ready {
    background: var(--cyan);
    border-color: var(--cyan);
    box-shadow: 0 0 60px rgba(0, 255, 255, 0.8);
}

.vrt-target.ready .vrt-prompt {
    color: var(--black);
    text-shadow: none;
    font-weight: bold;
}

.vrt-prompt {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    color: var(--white);
    text-shadow: var(--cyan-glow);
    text-align: center;
    padding: 20px;
    user-select: none;
}

.vrt-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.vrt-stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: var(--border-radius-card);
    padding: 20px 30px;
    text-align: center;
    min-width: 120px;
}

.vrt-stat-value {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    color: var(--cyan);
    text-shadow: var(--cyan-glow);
    line-height: 1.2;
}

.vrt-stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-dim);
}

.vrt-message {
    color: var(--orange);
    font-size: 1rem;
    min-height: 24px;
    margin-top: 10px;
}

.vrt-reset-btn {
    margin-top: 20px;
}

.vrt-leaderboard-note {
    margin-top: 40px;
    font-style: italic;
    color: var(--gray-dim);
    border-top: 1px solid rgba(0, 255, 255, 0.1);
    padding-top: 20px;
}