/* =============================================================================
   Upgrade Modal — Global paywall/upgrade prompt
   Triggered by 403 upgrade_required responses from feature-gated endpoints.
   ============================================================================= */

.upgrade-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.upgrade-modal-overlay.active {
    display: flex;
}

.upgrade-modal {
    background: var(--bg-card, #1a1a2e);
    border: 1px solid var(--border-color, #2a2a3e);
    border-radius: 16px;
    max-width: 480px;
    width: 90%;
    padding: 32px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.upgrade-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-muted, #888);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}

.upgrade-modal-close:hover {
    color: var(--text-primary, #eee);
    background: rgba(255, 255, 255, 0.08);
}

/* Icon */
.upgrade-modal-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(99, 102, 241, 0.12);
    margin: 0 auto 20px;
}

.upgrade-modal-icon svg {
    width: 28px;
    height: 28px;
    color: #818cf8;
}

/* Title & Message */
.upgrade-modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary, #f0f0f0);
    text-align: center;
    margin: 0 0 8px;
}

.upgrade-modal-message {
    font-size: 0.9rem;
    color: var(--text-secondary, #aaa);
    text-align: center;
    margin: 0 0 24px;
    line-height: 1.5;
}

/* Plan Comparison Card */
.upgrade-modal-plan-card {
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 24px;
}

.upgrade-modal-plan-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: #818cf8;
    margin-bottom: 4px;
}

.upgrade-modal-plan-price {
    font-size: 0.85rem;
    color: var(--text-muted, #888);
    margin-bottom: 12px;
}

.upgrade-modal-plan-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.upgrade-modal-plan-features li {
    font-size: 0.85rem;
    color: var(--text-secondary, #bbb);
    padding: 4px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.upgrade-modal-plan-features li::before {
    content: "✓";
    color: #34d399;
    font-weight: 600;
    font-size: 0.8rem;
}

/* CTA Badge */
.upgrade-modal-cta-badge {
    display: inline-block;
    background: rgba(251, 191, 36, 0.1);
    color: #fbbf24;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    text-align: center;
    width: 100%;
}

/* Actions */
.upgrade-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.upgrade-modal-actions .btn-upgrade-primary {
    display: block;
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #6366f1, #818cf8);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.15s;
}

.upgrade-modal-actions .btn-upgrade-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.upgrade-modal-actions .btn-upgrade-secondary {
    display: block;
    width: 100%;
    padding: 10px;
    background: transparent;
    color: var(--text-muted, #888);
    border: 1px solid var(--border-color, #2a2a3e);
    border-radius: 10px;
    font-size: 0.85rem;
    cursor: pointer;
    text-align: center;
    transition: background 0.2s;
}

.upgrade-modal-actions .btn-upgrade-secondary:hover {
    background: rgba(255, 255, 255, 0.04);
}