/* Shared Framework UI for all experiments */
.exp-top-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 1000;
    border-bottom: 1px solid #333;
    font-family: 'Inter', sans-serif;
    color: white;
    box-sizing: border-box;
}

.exp-top-bar .back-btn {
    color: #9ca3af;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.exp-top-bar .back-btn:hover {
    color: white;
    background: rgba(255, 255, 255, 0.2);
}

.exp-top-bar h1 {
    font-size: 16px;
    margin: 0;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 600;
    background: linear-gradient(90deg, #fff, #9ca3af);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ad-slot-header {
    display: none;
    /* Hidden until monetization strategy is active */
    width: 320px;
    height: 50px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px dashed rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    letter-spacing: 1px;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .exp-top-bar {
        height: auto;
        flex-direction: column;
        padding: 10px;
        gap: 10px;
    }

    .exp-top-bar h1 {
        display: none;
        /* Hide title on mobile to leave room for ad */
    }

    .ad-slot-header {
        width: 100%;
        max-width: 320px;
    }
}