/* ========================================
   Tier Upgrade Drill-Down Component
   With white overlay background
   ======================================== */

/* Full screen white overlay */
.tier-upgrade-drilldown {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.92);
    z-index: 9999;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    transition: opacity 0.3s ease-out;
    opacity: 0;
}

.tier-upgrade-drilldown.active {
    display: flex;
    opacity: 89;
}

.tier-upgrade-modal {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 520px;
    padding: 40px;
    position: relative;
    animation: slideDown 0.3s ease-out;
    transform: translateY(0);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tier-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: #999;
    font-size: 24px;
    line-height: 1;
    transition: color 0.2s;
}

.tier-close-btn:hover {
    color: #666;
}

.tier-modal-title {
    font-size: 24px;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 16px;
    line-height: 1.3;
}

.tier-modal-description {
    font-size: 16px;
    color: #718096;
    line-height: 1.6;
    margin-bottom: 32px;
}

.tier-button-group {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.tier-btn {
    padding: 12px 28px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.tier-btn-cancel {
    background-color: #e2f8f5;
    color: #00b8a9;
}

.tier-btn-cancel:hover {
    background-color: #d1f2ed;
}

.tier-btn-upgrade {
    background-color: #00b8a9;
    color: #ffffff;
}

.tier-btn-upgrade:hover {
    background-color: #00a89a;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 184, 169, 0.3);
}

.tier-btn:active {
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .tier-upgrade-drilldown {
        max-width: calc(100% - 40px);
    }
    
    .tier-upgrade-drilldown.active {
        top: 20px;
    }
    
    .tier-upgrade-modal {
        padding: 30px 20px;
    }
}

.tier-upgrade-header {
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
}

.tier-upgrade-header h2 {
    font-size: 22px;
    color: var(--text-dark);
    margin: 0 0 5px 0;
    font-weight: 600;
}

.tier-upgrade-header .subtitle {
    color: var(--text-medium);
    font-size: 14px;
}

.tier-upgrade-body {
    padding: 30px;
}

.feature-locked-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: var(--text-medium);
}

.tier-upgrade-message {
    text-align: center;
    margin-bottom: 25px;
}

.tier-upgrade-message p {
    font-size: 15px;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.6;
}

.tier-upgrade-message .current-tier {
    display: inline-block;
    padding: 4px 12px;
    background: #f8f9fa;
    border-radius: var(--radius-sm);
    color: var(--text-medium);
    font-size: 13px;
    font-weight: 600;
    margin-top: 10px;
}

.tier-comparison {
    margin: 25px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: var(--radius-md);
}

.tier-comparison-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
    text-align: center;
}

.tier-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.tier-option {
    padding: 15px 10px;
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-fast);
}

.tier-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.tier-option.recommended {
    border-color: var(--primary-color);
    position: relative;
}

.tier-option.recommended::before {
    content: "Recommended";
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--white);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
}

.tier-option-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
    margin-bottom: 8px;
}

.tier-option-features {
    font-size: 12px;
    color: var(--text-medium);
    line-height: 1.4;
}

.tier-upgrade-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 25px;
}

.tier-upgrade-actions .btn {
    padding: 12px 30px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-upgrade {
    background: var(--primary-color);
    color: var(--white);
}

.btn-upgrade:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-back {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-back:hover {
    background: #f8f9fa;
}

.tier-upgrade-footer {
    padding: 15px 30px;
    background: #f8f9fa;
    border-top: 1px solid var(--border-color);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    text-align: center;
}

.tier-upgrade-footer p {
    font-size: 13px;
    color: var(--text-medium);
    margin: 0;
}

.tier-upgrade-footer a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

.tier-upgrade-footer a:hover {
    text-decoration: underline;
}

/* Contact admin message */
.contact-admin-notice {
    margin-top: 20px;
    padding: 15px;
    background: #fff3cd;
    border-left: 4px solid #f0ad4e;
    border-radius: var(--radius-sm);
}

.contact-admin-notice p {
    font-size: 13px;
    color: #856404;
    margin: 0;
}

.contact-admin-notice strong {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
}