/* ========================================
   Modal and Dialog Styles
   ======================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
    padding: var(--spacing-lg);
}

.modal-content {
    max-width: 500px;
    width: 100%;
    padding: var(--spacing-2xl);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-content h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    color: var(--gray-900);
}

.modal-content p {
    color: var(--gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    white-space: pre-line;
}

.modal-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.modal-buttons button {
    flex: 1;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.modal-actions button {
    flex: 1;
}

/* ========================================
   Loading States
   ======================================== */

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-600);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.skeleton {
    background: linear-gradient(90deg,
            var(--gray-200) 0%,
            var(--gray-300) 50%,
            var(--gray-200) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ========================================
   Badge and Tag Components
   ======================================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    color: white;
}

.badge-success {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
    color: white;
}

/* ========================================
   Feature Comparison Table
   ======================================== */

.feature-comparison {
    margin-top: var(--spacing-2xl);
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.comparison-table th {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    color: var(--primary-900);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

.comparison-table tbody tr:hover {
    background: var(--gray-50);
}

.comparison-table td:first-child {
    font-weight: 600;
}

.check-icon {
    color: var(--success);
}

.cross-icon {
    color: var(--gray-300);
}

/* ========================================
   Improved Tooltips
   ======================================== */

[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-900);
    color: white;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
}

[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--gray-900);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after {
    opacity: 1;
}

/* =======================================
   Improved Accessibility
   ======================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible improvements */
button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid var(--primary-500);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   Print Optimization
   ======================================== */

@media print {
    @page {
        margin: 1cm;
    }

    body {
        background: white;
    }

    .no-print,
    .sidebar,
    .donation-btn,
    .toast-container,
    .bg-decorations,
    button {
        display: none !important;
    }

    .content-header h1 {
        color: var(--gray-900);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .qr-preview-container {
        border: 2px solid var(--gray-900);
        page-break-inside: avoid;
    }
}

/* ========================================
   High Contrast Mode Support
   ======================================== */

@media (prefers-contrast: high) {
    :root {
        --primary-600: #6b21a8;
        --gray-100: #f0f0f0;
        --gray-900: #000000;
    }

    button,
    .glass-card {
        border-width: 2px;
    }
}