/* Custom CSS for InvoiceGen */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --warning-color: #ffc107;
    --light-bg: #f8f9fa;
    --border-color: #dee2e6;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-bg);
}

.container-fluid {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card-body {
    padding: 2rem;
}

.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid var(--border-color);
    padding: 0.75rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(45deg, #0d6efd, #0056b3);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #0056b3, #004085);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.4);
}

.btn-warning {
    background: linear-gradient(45deg, #ffc107, #ffb300);
    border: none;
    color: #000;
}

.btn-warning:hover {
    background: linear-gradient(45deg, #ffb300, #ff8f00);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 193, 7, 0.4);
}

.text-primary {
    color: var(--primary-color) !important;
}

h1.display-4 {
    background: linear-gradient(45deg, #0d6efd, #6610f2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h4.text-primary {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
}

.line-item {
    background-color: #fff;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.line-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.item-total {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.alert {
    border-radius: 10px;
    border: none;
}

.bg-light {
    background-color: #f8f9fa !important;
}

/* Discount type select styling */
#discountType {
    min-width: 60px;
    text-align: center;
    font-weight: 600;
}

#discountType option {
    text-align: center;
}

/* Premium Timer Banner */
.premium-banner {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    font-size: 14px;
    transition: all 0.3s ease;
}

.premium-banner-content {
    display: flex;
    align-items: center;
    color: white;
}

.premium-banner.premium-active {
    background: linear-gradient(135deg, #198754, #20c997);
}

.premium-banner.premium-warning {
    background: linear-gradient(135deg, #ffc107, #ffb300);
    color: #000;
}

.premium-banner.premium-expiring {
    background: linear-gradient(135deg, #dc3545, #c82333);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        width: 100%;
        margin-bottom: 1rem;
    }
    
    h1.display-4 {
        font-size: 2rem;
    }
}

/* Animation for form sections */
.row {
    animation: fadeInUp 0.6s ease-out;
}

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

/* Loading state */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border-radius: 50%;
    border: 2px solid #fff;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Premium features highlight */
.premium-feature {
    position: relative;
    overflow: hidden;
}

.premium-feature::before {
    content: "PREMIUM";
    position: absolute;
    top: 10px;
    right: -30px;
    background: linear-gradient(45deg, #ffc107, #ff8f00);
    color: #000;
    padding: 5px 40px;
    font-size: 0.75rem;
    font-weight: bold;
    transform: rotate(45deg);
    z-index: 1;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}

/* Invoice Preview Blur Effect */
.invoice-preview-blurred {
    opacity: 0.6;
    filter: blur(3px);
    user-select: none;
    pointer-events: none;
}

.invoice-preview-clear {
    opacity: 1;
    filter: none;
}

/* Preview watermark overlay */
.preview-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
    font-size: 3rem;
    font-weight: bold;
    color: rgba(220, 53, 69, 0.15);
    pointer-events: none;
    white-space: nowrap;
    z-index: 2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}