/* ====================================
   BILLING PAGE STYLES
   ==================================== */

/* Billing Overview Cards */
.billing-overview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.billing-card {
    background: var(--white);
    border: 2px solid var(--grey-lighter);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all 0.3s ease;
    animation: fadeInUp 0.4s ease-out;
}

.billing-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.billing-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.billing-card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--grey-medium);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.period-badge,
.date-badge,
.info-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--primary-blue-light);
    color: var(--primary-blue);
}

.date-badge {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-orange);
}

.info-badge {
    background: var(--grey-lightest);
    color: var(--grey-medium);
}

.billing-amount {
    display: flex;
    align-items: baseline;
    margin-bottom: 1.5rem;
}

.billing-amount .currency {
    font-size: 2rem;
    font-weight: 700;
    color: var(--grey-medium);
    margin-right: 0.25rem;
}

.billing-amount .amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--grey-dark);
    line-height: 1;
}

.billing-details {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--grey-lighter);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-label {
    font-size: 0.85rem;
    color: var(--grey-medium);
    font-weight: 500;
}

.detail-value {
    font-size: 1rem;
    color: var(--grey-dark);
    font-weight: 600;
}

.detail-value.status-pending {
    color: var(--warning-orange);
}

/* Budget Tracker */
.budget-tracker {
    margin-top: 1.5rem;
}

.budget-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--grey-medium);
    font-weight: 500;
}

.budget-percent {
    color: var(--grey-dark);
    font-weight: 700;
}

.budget-bar {
    background: var(--grey-lighter);
    border-radius: 10px;
    height: 8px;
    overflow: hidden;
}

.budget-fill {
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    height: 100%;
    border-radius: 10px;
    transition: width 1s ease;
    width: 0;
}

/* Spending Trend */
.spending-trend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(16, 185, 129, 0.05);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--success-green);
    font-weight: 600;
}

.trend-icon {
    flex-shrink: 0;
}

.trend-icon.up {
    color: var(--success-green);
}

.trend-icon.down {
    color: var(--danger-red);
    transform: scaleY(-1);
}

/* Button Outline Primary */
.btn-outline-primary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(13, 133, 216, 0.3);
}

/* Billing Content Grid */
.billing-content-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
}

.billing-left,
.billing-right {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Invoices List */
.invoices-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.invoice-item {
    background: var(--white);
    border: 2px solid var(--grey-lighter);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    transition: all 0.3s ease;
    animation: fadeInUp 0.3s ease-out;
}

.invoice-item:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-sm);
}

.invoice-main {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    flex: 1;
}

.invoice-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-blue-light);
    color: var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.invoice-icon.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-orange);
}

.invoice-info {
    flex: 1;
}

.invoice-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--grey-dark);
    margin: 0 0 0.5rem;
}

.invoice-date {
    font-size: 0.85rem;
    color: var(--grey-medium);
    margin: 0 0 0.75rem;
}

.invoice-projects {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tag {
    display: inline-block;
    padding: 4px 10px;
    background: var(--grey-lightest);
    color: var(--grey-medium);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 12px;
}

.invoice-amount-section {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
    flex-shrink: 0;
}

.invoice-amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--grey-dark);
}

.invoice-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.invoice-status.paid {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-green);
}

.invoice-status.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-orange);
}

.invoice-status.overdue {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-red);
}

.invoice-actions {
    display: flex;
    gap: 0.5rem;
}

/* Payment History */
.payment-history-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.payment-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--white);
    border: 2px solid var(--grey-lighter);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.payment-item:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-sm);
}

.payment-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.payment-icon.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-green);
}

.payment-icon.failed {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-red);
}

.payment-info {
    flex: 1;
}

.payment-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--grey-dark);
    margin: 0 0 0.25rem;
}

.payment-info p {
    font-size: 0.85rem;
    color: var(--grey-medium);
    margin: 0 0 0.25rem;
}

.payment-date {
    font-size: 0.8rem;
    color: var(--grey-light);
}

.payment-amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--success-green);
    flex-shrink: 0;
}

/* Payment Methods */
.payment-methods-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.payment-method-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.payment-method-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.payment-method-card.primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
}

.payment-method-card .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.card-brand svg {
    display: block;
}

.primary-badge {
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.card-number {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.payment-method-card .card-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    text-decoration: underline;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.btn-text:hover {
    opacity: 1;
}

.add-payment-method {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--white);
    border: 2px dashed var(--grey-lighter);
    border-radius: var(--radius-lg);
    color: var(--grey-medium);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.add-payment-method:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background: var(--primary-blue-light);
}

/* Billing Settings */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--grey-lightest);
    border-radius: var(--radius-md);
}

.setting-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--grey-dark);
    margin: 0 0 0.25rem;
}

.setting-info p {
    font-size: 0.85rem;
    color: var(--grey-medium);
    margin: 0;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--grey-light);
    transition: 0.3s;
    border-radius: 28px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: var(--white);
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--primary-blue);
}

input:checked + .toggle-slider:before {
    transform: translateX(22px);
}

/* Contact Info Card */
.contact-info-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--grey-lightest);
    border-radius: var(--radius-md);
}

.contact-item svg {
    color: var(--primary-blue);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item > div {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
}

.contact-label {
    font-size: 0.8rem;
    color: var(--grey-medium);
    font-weight: 500;
}

.contact-value {
    font-size: 0.95rem;
    color: var(--grey-dark);
    font-weight: 600;
}

/* Support Card */
.support-card {
    text-align: center;
    padding: 2rem !important;
    background: linear-gradient(135deg, rgba(13, 133, 216, 0.05) 0%, rgba(13, 133, 216, 0.1) 100%) !important;
    border: 2px solid var(--primary-blue-light) !important;
}

.support-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--primary-blue);
}

.support-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--grey-dark);
    margin: 0 0 0.75rem;
}

.support-card p {
    font-size: 0.95rem;
    color: var(--grey-medium);
    line-height: 1.6;
    margin: 0 0 1.5rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .billing-overview {
        grid-template-columns: 1fr;
    }
    
    .billing-content-grid {
        grid-template-columns: 1fr 350px;
    }
}

@media (max-width: 968px) {
    .billing-content-grid {
        grid-template-columns: 1fr;
    }
    
    .billing-right {
        order: -1;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .page-actions {
        width: 100%;
    }
    
    .page-actions .btn-secondary,
    .page-actions .btn-primary {
        flex: 1;
    }
}

@media (max-width: 768px) {
    .billing-overview {
        gap: 1.5rem;
    }
    
    .billing-card {
        padding: 1.5rem;
    }
    
    .billing-amount .currency {
        font-size: 1.5rem;
    }
    
    .billing-amount .amount {
        font-size: 2.5rem;
    }
    
    .billing-details {
        gap: 1.5rem;
    }
    
    .invoice-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .invoice-amount-section {
        width: 100%;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
    
    .invoice-actions {
        margin-top: 0.5rem;
    }
}

@media (max-width: 480px) {
    .billing-card {
        padding: 1.25rem;
    }
    
    .billing-amount .currency {
        font-size: 1.25rem;
    }
    
    .billing-amount .amount {
        font-size: 2rem;
    }
    
    .billing-details {
        flex-direction: column;
        gap: 1rem;
    }
    
    .page-actions {
        flex-direction: column;
    }
    
    .invoice-main {
        flex-direction: column;
    }
    
    .invoice-icon {
        width: 40px;
        height: 40px;
    }
    
    .payment-method-card {
        padding: 1.25rem;
    }
    
    .card-number {
        font-size: 1.1rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation delays for staggered entrance */
.billing-card:nth-child(1) { animation-delay: 0.1s; }
.billing-card:nth-child(2) { animation-delay: 0.2s; }
.billing-card:nth-child(3) { animation-delay: 0.3s; }

.invoice-item:nth-child(1) { animation-delay: 0.1s; }
.invoice-item:nth-child(2) { animation-delay: 0.15s; }
.invoice-item:nth-child(3) { animation-delay: 0.2s; }
.invoice-item:nth-child(4) { animation-delay: 0.25s; }