/* Upgrade Modal — Pro paywall */
.upgrade-overlay {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(6px);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none;
    transition: opacity 0.25s ease;
}
.upgrade-overlay.visible { opacity: 1; pointer-events: auto; }

.upgrade-modal {
    background: rgba(18,24,38,0.92); backdrop-filter: blur(24px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 18px; padding: 40px 36px; max-width: 420px; width: 90%;
    text-align: center; position: relative;
    box-shadow: 0 24px 64px rgba(0,0,0,0.5);
    animation: upgradeIn 0.3s ease;
}
@keyframes upgradeIn {
    from { opacity: 0; transform: translateY(16px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.upgrade-close {
    position: absolute; top: 14px; right: 16px;
    background: none; border: none; color: rgba(255,255,255,0.4);
    font-size: 24px; cursor: pointer; line-height: 1;
    transition: color 0.15s;
}
.upgrade-close:hover { color: #fff; }

.upgrade-badge {
    display: inline-block; padding: 4px 14px;
    background: linear-gradient(135deg, #a855f7, #d4af37);
    border-radius: 20px; font-size: 12px; font-weight: 600;
    letter-spacing: 1.5px; color: #fff; margin-bottom: 16px;
}

.upgrade-title {
    font-size: 22px; font-weight: 300; color: #fff; margin: 0 0 10px;
}

.upgrade-desc {
    font-size: 14px; color: rgba(255,255,255,0.55); margin: 0 0 20px; line-height: 1.5;
}

.upgrade-price {
    margin-bottom: 20px;
}
.upgrade-amount {
    font-size: 42px; font-weight: 200; color: #fff;
}
.upgrade-period {
    font-size: 16px; color: rgba(255,255,255,0.5);
}
.upgrade-note {
    display: block; font-size: 12px; color: rgba(255,255,255,0.35); margin-top: 4px;
}

.upgrade-perks {
    list-style: none; padding: 0; margin: 0 0 24px;
    text-align: left;
}
.upgrade-perks li {
    font-size: 13px; color: rgba(255,255,255,0.7);
    padding: 6px 0 6px 22px; position: relative;
}
.upgrade-perks li::before {
    content: '\2713'; position: absolute; left: 0;
    color: #22c55e; font-weight: 600;
}

.upgrade-cta {
    display: inline-block; padding: 12px 36px;
    background: linear-gradient(135deg, #a855f7, #d4af37);
    color: #fff; font-size: 15px; font-weight: 500;
    border-radius: 20px; text-decoration: none;
    transition: opacity 0.15s, transform 0.15s;
}
.upgrade-cta:hover { opacity: 0.9; transform: translateY(-1px); }

.upgrade-footer {
    font-size: 12px; color: rgba(255,255,255,0.3); margin: 14px 0 0;
}