/* Glassmorphism Design System for ME-QR Clone */

/* Glass Card Component */
.glass-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    overflow: hidden;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Glass Button */
.glass-button {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 50px;
    color: white;
    padding: 0.75rem 2rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.glass-button:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    text-decoration: none;
}

.glass-button.btn-primary {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.3), rgba(102, 126, 234, 0.3));
    border-color: rgba(79, 70, 229, 0.4);
}

.glass-button.btn-primary:hover {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.5), rgba(102, 126, 234, 0.5));
    border-color: rgba(79, 70, 229, 0.6);
}

/* Glass Navigation */
.glass-nav {
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    transition: all 0.3s ease;
    border-radius: 25px;
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
}

.glass-nav .nav-link:hover,
.glass-nav .nav-link.active {
    background: rgba(255, 255, 255, 0.2);
    color: white !important;
    transform: translateY(-1px);
}

/* Glass Modal */
.glass-modal .modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.glass-modal .modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 25px 25px 0 0;
}

.glass-modal .modal-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 0 0 25px 25px;
}

/* Enhanced Glass Form System */

/* Glass Form Container */
.glass-form {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 2rem;
    margin: 1rem 0;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

/* Glass Form Field Groups */
.glass-form-group {
    position: relative;
    margin-bottom: 2rem;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.glass-form-group:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Floating Labels */
.glass-floating-label {
    position: relative;
}

.glass-floating-label input,
.glass-floating-label textarea,
.glass-floating-label select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.25rem 1rem 0.75rem 1rem;
    color: white;
    transition: all 0.3s ease;
    width: 100%;
    font-size: 1rem;
}

.glass-floating-label input::placeholder,
.glass-floating-label textarea::placeholder {
    color: transparent;
}

.glass-floating-label input:focus,
.glass-floating-label textarea:focus,
.glass-floating-label select:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
    color: white;
    transform: translateY(-1px);
}

.glass-floating-label label {
    position: absolute;
    top: 1.25rem;
    left: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    background: transparent;
}

.glass-floating-label input:focus + label,
.glass-floating-label input:not(:placeholder-shown) + label,
.glass-floating-label textarea:focus + label,
.glass-floating-label textarea:not(:placeholder-shown) + label {
    top: 0.5rem;
    left: 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(79, 70, 229, 0.8);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
}

/* Glass Input Icons */
.glass-input-icon {
    position: relative;
}

.glass-input-icon .input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.7);
    z-index: 2;
    transition: all 0.3s ease;
}

.glass-input-icon input,
.glass-input-icon textarea,
.glass-input-icon select {
    padding-left: 3rem;
}

.glass-input-icon input:focus + .input-icon,
.glass-input-icon textarea:focus + .input-icon {
    color: rgba(255, 255, 255, 1);
    transform: translateY(-50%) scale(1.1);
}

/* Glass Form Validation */
.glass-valid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: rgba(34, 197, 94, 1);
    background: rgba(34, 197, 94, 0.1);
    backdrop-filter: blur(10px);
    padding: 0.5rem 0.75rem;
    border-radius: 10px;
    border: 1px solid rgba(34, 197, 94, 0.3);
    margin-top: 0.5rem;
}

.glass-invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: rgba(239, 68, 68, 1);
    background: rgba(239, 68, 68, 0.1);
    backdrop-filter: blur(10px);
    padding: 0.5rem 0.75rem;
    border-radius: 10px;
    border: 1px solid rgba(239, 68, 68, 0.3);
    margin-top: 0.5rem;
}

.glass-form-control.is-valid,
.glass-floating-label input:valid,
.glass-floating-label textarea:valid {
    border-color: rgba(34, 197, 94, 0.6);
    background: rgba(34, 197, 94, 0.05);
}

.glass-form-control.is-invalid,
.glass-floating-label input:invalid,
.glass-floating-label textarea:invalid {
    border-color: rgba(239, 68, 68, 0.6);
    background: rgba(239, 68, 68, 0.05);
}

/* Interactive Form Animations */
.glass-form-group {
    animation: slideInForm 0.6s ease-out;
}

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

.glass-form-group:nth-child(1) { animation-delay: 0.1s; }
.glass-form-group:nth-child(2) { animation-delay: 0.2s; }
.glass-form-group:nth-child(3) { animation-delay: 0.3s; }
.glass-form-group:nth-child(4) { animation-delay: 0.4s; }
.glass-form-group:nth-child(5) { animation-delay: 0.5s; }

/* Glass Progress Indicators */
.glass-progress-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border-radius: 25px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.glass-progress-bar {
    position: relative;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
}

.glass-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, rgba(79, 70, 229, 0.8), rgba(102, 126, 234, 0.8));
    border-radius: 10px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.glass-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.glass-step-indicator {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
}

.glass-step {
    position: relative;
    flex: 1;
    text-align: center;
}

.glass-step::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -50%;
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
    z-index: 1;
}

.glass-step:first-child::before {
    display: none;
}

.glass-step.active::before {
    background: rgba(79, 70, 229, 0.8);
}

.glass-step.completed::before {
    background: rgba(34, 197, 94, 0.8);
}

.glass-step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.glass-step.active .glass-step-circle {
    background: rgba(79, 70, 229, 0.8);
    border-color: rgba(79, 70, 229, 1);
    color: white;
    transform: scale(1.1);
}

.glass-step.completed .glass-step-circle {
    background: rgba(34, 197, 94, 0.8);
    border-color: rgba(34, 197, 94, 1);
    color: white;
}

.glass-step-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* Drag & Drop Upload Zones */
.glass-upload-zone {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.glass-upload-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(79, 70, 229, 0.1), rgba(102, 126, 234, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.glass-upload-zone:hover::before,
.glass-upload-zone.dragover::before {
    opacity: 1;
}

.glass-upload-zone:hover,
.glass-upload-zone.dragover {
    border-color: rgba(79, 70, 229, 0.6);
    background: rgba(79, 70, 229, 0.1);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(79, 70, 229, 0.2);
}

.glass-upload-icon {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.glass-upload-zone:hover .glass-upload-icon,
.glass-upload-zone.dragover .glass-upload-icon {
    color: rgba(79, 70, 229, 1);
    transform: scale(1.1);
}

.glass-upload-text {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.glass-upload-hint {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

/* Auto-save Indicator */
.glass-autosave {
    position: fixed;
    top: 100px;
    right: 2rem;
    background: rgba(34, 197, 94, 0.9);
    backdrop-filter: blur(15px);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 500;
    display: none;
    align-items: center;
    gap: 0.5rem;
    z-index: 1000;
    animation: slideInRight 0.5s ease-out;
}

.glass-autosave.saving {
    background: rgba(245, 158, 11, 0.9);
}

.glass-autosave.error {
    background: rgba(239, 68, 68, 0.9);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Enhanced Glass Buttons */
.glass-button {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 50px;
    color: white;
    padding: 1rem 2rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.875rem;
}

.glass-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.glass-button:hover::before {
    left: 100%;
}

.glass-button:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

.glass-button:active {
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.glass-button.loading {
    pointer-events: none;
    opacity: 0.8;
}

.glass-button .spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Submit Button States */
.glass-submit {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.8), rgba(102, 126, 234, 0.8));
    border: 1px solid rgba(79, 70, 229, 0.6);
    border-radius: 50px;
    padding: 1.25rem 3rem;
    font-size: 1rem;
    font-weight: 700;
    text-transform: none;
    letter-spacing: normal;
    position: relative;
    overflow: hidden;
}

.glass-submit:hover {
    background: linear-gradient(135deg, rgba(79, 70, 229, 1), rgba(102, 126, 234, 1));
    box-shadow: 0 15px 35px rgba(79, 70, 229, 0.4);
}

.glass-submit:disabled {
    background: rgba(107, 114, 128, 0.8);
    border-color: rgba(107, 114, 128, 0.6);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Mobile-Optimized Touch Interfaces */
@media (max-width: 768px) {
    .glass-form {
        padding: 1.5rem;
        margin: 0.5rem;
        border-radius: 20px;
    }
    
    .glass-form-group {
        padding: 1rem;
        margin-bottom: 1.5rem;
        border-radius: 15px;
    }
    
    .glass-floating-label input,
    .glass-floating-label textarea,
    .glass-floating-label select {
        padding: 1rem;
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    .glass-floating-label label {
        font-size: 1rem;
    }
    
    .glass-button {
        padding: 1rem 1.5rem;
        font-size: 1rem;
        min-height: 48px; /* Touch target */
        justify-content: center;
    }
    
    .glass-upload-zone {
        padding: 2rem 1rem;
    }
    
    .glass-step-circle {
        width: 35px;
        height: 35px;
        font-size: 0.875rem;
    }
    
    .glass-step-label {
        font-size: 0.75rem;
    }
    
    .glass-autosave {
        right: 1rem;
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }
}

/* Enhanced Accessibility */
.glass-form [aria-invalid="true"] {
    border-color: rgba(239, 68, 68, 0.8) !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2) !important;
}

.glass-form [aria-describedby] {
    position: relative;
}

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

/* Focus Management */
.glass-form input:focus,
.glass-form textarea:focus,
.glass-form select:focus,
.glass-form button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
    border-color: rgba(79, 70, 229, 0.8);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .glass-form-group {
        border-width: 2px;
        background: rgba(255, 255, 255, 0.15);
    }
    
    .glass-floating-label input,
    .glass-floating-label textarea,
    .glass-floating-label select {
        border-width: 2px;
        background: rgba(255, 255, 255, 0.2);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Legacy Glass Input (backwards compatibility) */
.glass-input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 0.75rem 1rem;
    color: white;
    transition: all 0.3s ease;
}

.glass-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.glass-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
    color: white;
}

/* Glass Alert */
.glass-alert {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    color: white;
}

.glass-alert.alert-success {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.3);
}

.glass-alert.alert-danger {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
}

.glass-alert.alert-warning {
    background: rgba(245, 158, 11, 0.2);
    border-color: rgba(245, 158, 11, 0.3);
}

.glass-alert.alert-info {
    background: rgba(6, 182, 212, 0.2);
    border-color: rgba(6, 182, 212, 0.3);
}

/* Glass Table */
.glass-table {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px;
    overflow: hidden;
}

.glass-table table {
    margin: 0;
}

.glass-table thead th {
    background: rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-weight: 600;
}

.glass-table tbody tr {
    transition: all 0.3s ease;
}

.glass-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.1);
}

.glass-table tbody td {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
}

/* Glass Pagination */
.glass-pagination .page-link {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 8px;
    margin: 0 2px;
    transition: all 0.3s ease;
}

.glass-pagination .page-link:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-1px);
}

.glass-pagination .page-item.active .page-link {
    background: rgba(79, 70, 229, 0.6);
    border-color: rgba(79, 70, 229, 0.8);
}

/* Glass Dropdown */
.glass-dropdown .dropdown-menu {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.glass-dropdown .dropdown-item {
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 2px 4px;
}

.glass-dropdown .dropdown-item:hover {
    background: rgba(79, 70, 229, 0.1);
    color: #4f46e5;
}

/* Glass Badge */
.glass-badge {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    color: white;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Glass Progress Bar */
.glass-progress {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 10px;
    overflow: hidden;
    height: 8px;
}

.glass-progress .progress-bar {
    background: linear-gradient(90deg, rgba(79, 70, 229, 0.8), rgba(102, 126, 234, 0.8));
    border-radius: 10px;
    transition: width 0.6s ease;
}

/* Glass Tab Component */
.glass-tabs .nav-tabs {
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px 15px 0 0;
    padding: 1rem 1rem 0 1rem;
}

.glass-tabs .nav-tabs .nav-link {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px 10px 0 0;
    color: white;
    margin-right: 0.5rem;
    transition: all 0.3s ease;
}

.glass-tabs .nav-tabs .nav-link:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.4);
}

.glass-tabs .nav-tabs .nav-link.active {
    background: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.5);
    color: #4f46e5;
}

.glass-tabs .tab-content {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-top: none;
    border-radius: 0 0 15px 15px;
    padding: 2rem;
}

/* Glass Card Variants */
.glass-card-dark {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
}

.glass-card-primary {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.2), rgba(102, 126, 234, 0.2));
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(79, 70, 229, 0.3);
    color: white;
}

.glass-card-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(5, 150, 105, 0.2));
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: white;
}

/* Responsive Glassmorphism */
@media (max-width: 768px) {
    .glass-card {
        border-radius: 15px;
        margin-bottom: 1rem;
    }
    
    .glass-button {
        padding: 0.5rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .glass-nav .nav-link {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .glass-tabs .tab-content {
        padding: 1rem;
    }
}

/* Animation Classes */
.fade-in-glass {
    animation: fadeInGlass 0.8s ease-out;
}

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

.slide-in-glass {
    animation: slideInGlass 0.6s ease-out;
}

@keyframes slideInGlass {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.float-glass {
    animation: floatGlass 3s ease-in-out infinite;
}

@keyframes floatGlass {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Utility Classes */
.glass-shadow {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1), 
                0 5px 15px rgba(0, 0, 0, 0.07);
}

.glass-shadow-lg {
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15), 
                0 10px 25px rgba(0, 0, 0, 0.1);
}

.backdrop-blur {
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
}

.text-glass {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Print Styles for Glassmorphism */
@media print {
    .glass-card,
    .glass-button,
    .glass-nav,
    .glass-modal {
        background: white !important;
        backdrop-filter: none !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        color: black !important;
    }
}

/* ==========================================================================
   Theme System & Enhanced Navigation
   ========================================================================== */

/* Theme Toggle Button */
.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    width: 3.5rem;
    height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    margin-left: 1rem;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.theme-toggle:hover::before {
    left: 100%;
}

.theme-toggle:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 
        0 10px 25px rgba(0, 0, 0, 0.2),
        0 0 20px rgba(102, 126, 234, 0.3);
    border-color: rgba(255, 255, 255, 0.4);
}

.theme-toggle i {
    font-size: 1.25rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
}

.theme-toggle-icon {
    position: absolute;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-icon.light-icon {
    opacity: 1;
    transform: scale(1);
}

.theme-toggle-icon.dark-icon {
    opacity: 0;
    transform: scale(0.5);
}

/* Enhanced Glass Navigation */
.navbar.glass-navbar {
    background: rgba(255, 255, 255, 0.08) !important;
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0.75rem 0;
}

.navbar.glass-navbar.scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.navbar.glass-navbar .navbar-brand {
    font-family: var(--font-family-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.navbar.glass-navbar .navbar-brand:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
}

/* Enhanced Navigation Links */
.nav-link.glass-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.75rem 1.25rem !important;
    border-radius: 50px;
    margin: 0 0.25rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid transparent;
}

.nav-link.glass-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
    transition: left 0.4s ease;
    z-index: -1;
}

.nav-link.glass-link:hover::before {
    left: 0;
}

.nav-link.glass-link:hover {
    color: white !important;
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.15),
        0 0 20px rgba(102, 126, 234, 0.2);
}

.nav-link.glass-link.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.6), rgba(118, 75, 162, 0.6));
    color: white !important;
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 8px 25px rgba(102, 126, 234, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* Navigation Active Indicator */
.nav-active-indicator {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    box-shadow: 
        0 0 10px rgba(102, 126, 234, 0.6),
        0 0 20px rgba(102, 126, 234, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: translateX(-50%) scale(1);
        opacity: 1;
    }
    50% {
        transform: translateX(-50%) scale(1.3);
        opacity: 0.8;
    }
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* Enhanced Mobile Menu */
@media (max-width: 991px) {
    .navbar-collapse.glass-navbar-collapse {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(25px);
        -webkit-backdrop-filter: blur(25px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 20px;
        margin-top: 1rem;
        padding: 1.5rem;
        box-shadow: 
            0 15px 35px rgba(0, 0, 0, 0.15),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
    }
    
    .nav-link.glass-link {
        margin: 0.25rem 0;
        border-radius: 12px;
    }
}

/* Glass Button Enhanced */
.btn.glass-button {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: white;
    font-weight: 600;
    padding: 0.875rem 2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-transform: none;
    letter-spacing: 0.5px;
}

.btn.glass-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.btn.glass-button:hover::before {
    left: 100%;
}

.btn.glass-button:hover {
    transform: translateY(-2px) scale(1.05);
    border-color: rgba(255, 255, 255, 0.4);
    color: white;
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.2),
        0 0 20px rgba(255, 255, 255, 0.1);
}

.btn.glass-button:active {
    transform: translateY(0) scale(0.98);
}

/* Breadcrumb Navigation with Glass Effects */
.breadcrumb-container.glass-breadcrumb {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 15px;
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.breadcrumb.glass.breadcrumb-nav {
    background: transparent;
    margin: 0;
    padding: 0;
}

.breadcrumb-item {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    transition: all 0.3s ease;
}

.breadcrumb-item a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.breadcrumb-item a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.breadcrumb-item.active {
    color: white;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
    border: 1px solid rgba(102, 126, 234, 0.4);
    box-shadow: 
        0 4px 15px rgba(102, 126, 234, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '→';
    color: rgba(255, 255, 255, 0.5);
    font-weight: 300;
    margin: 0 0.75rem;
    opacity: 0.7;
}

/* Page Transitions */
.page-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.95));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 9998;
    opacity: 1;
    transition: opacity 0.4s ease;
}

[data-theme="dark"] .page-transition-overlay {
    background: linear-gradient(135deg, rgba(15, 15, 15, 0.95), rgba(26, 26, 26, 0.95));
}

/* Theme Transition Overlay */
.theme-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-transition-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
        rgba(102, 126, 234, 0.1) 0%, 
        rgba(118, 75, 162, 0.1) 50%, 
        rgba(240, 147, 251, 0.1) 100%);
    animation: themeTransition 0.6s ease;
}

@keyframes themeTransition {
    0% {
        opacity: 0;
        transform: scale(0.8) rotate(0deg);
    }
    50% {
        opacity: 1;
        transform: scale(1.1) rotate(180deg);
    }
    100% {
        opacity: 0;
        transform: scale(1.2) rotate(360deg);
    }
}

/* Ripple Effect */
@keyframes rippleEffect {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

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

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Mobile Navigation Enhancements */
@media (max-width: 767px) {
    .navbar.glass-navbar {
        padding: 0.5rem 0;
    }
    
    .navbar-toggler.glass-button {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 12px;
        padding: 0.75rem;
        color: white;
        transition: all 0.3s ease;
    }
    
    .navbar-toggler.glass-button:hover {
        background: rgba(255, 255, 255, 0.2);
        transform: scale(1.05);
    }
    
    .mobile-nav .nav-link {
        animation: fadeInUp 0.5s ease forwards;
        opacity: 0;
        transform: translateY(-20px);
    }
    
    .mobile-nav .nav-link:nth-child(1) { animation-delay: 0.1s; }
    .mobile-nav .nav-link:nth-child(2) { animation-delay: 0.2s; }
    .mobile-nav .nav-link:nth-child(3) { animation-delay: 0.3s; }
    .mobile-nav .nav-link:nth-child(4) { animation-delay: 0.4s; }
    .mobile-nav .nav-link:nth-child(5) { animation-delay: 0.5s; }
}

/* Touch Gesture Indicators */
.nav-swipe-indicator {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.mobile-nav:hover .nav-swipe-indicator {
    opacity: 1;
}

/* Enhanced Dropdown Menu */
.dropdown-menu.dropdown-menu-glass {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    padding: 0.75rem 0;
    margin-top: 0.5rem;
}

[data-theme="dark"] .dropdown-menu.dropdown-menu-glass {
    background: rgba(26, 26, 26, 0.95);
    border-color: rgba(255, 255, 255, 0.1);
}

.dropdown-item.dropdown-item-glass {
    color: #374151;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 0.25rem 0.75rem;
    position: relative;
}

[data-theme="dark"] .dropdown-item.dropdown-item-glass {
    color: #e5e7eb;
}

.dropdown-item.dropdown-item-glass:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    color: #4f46e5;
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

[data-theme="dark"] .dropdown-item.dropdown-item-glass:hover {
    color: #a78bfa;
}

/* Scroll-to-Top Button with Glass Effect */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3.5rem;
    height: 3.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    transform: translateY(20px);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Loading States */
.nav-loading {
    position: relative;
    overflow: hidden;
}

.nav-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: navLoading 1.5s infinite;
}

@keyframes navLoading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Notification Badges */
.notification-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 50px;
    min-width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-5px);
    }
    60% {
        transform: translateY(-3px);
    }
}

/* Search Input with Glass Effect */
.nav-search {
    position: relative;
    max-width: 300px;
}

.nav-search .form-control {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    padding: 0.75rem 1rem 0.75rem 3rem;
    color: white;
    transition: all 0.3s ease;
}

.nav-search .form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.nav-search .form-control:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    outline: none;
}

.nav-search .search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s ease;
}

.nav-search .form-control:focus + .search-icon {
    color: rgba(255, 255, 255, 1);
    transform: translateY(-50%) scale(1.1);
}

/* Performance Optimizations */
@media (max-width: 768px) {
    .navbar.glass-navbar {
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
    }
    
    .nav-link.glass-link {
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }
    
    .breadcrumb-container.glass-breadcrumb {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .navbar.glass-navbar,
    .nav-link.glass-link,
    .breadcrumb-container.glass-breadcrumb {
        border: 2px solid currentColor;
    }
    
    .theme-toggle {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .nav-link.glass-link,
    .btn.glass-button,
    .theme-toggle,
    .nav-active-indicator,
    .breadcrumb-item,
    .dropdown-item.dropdown-item-glass {
        transition: none;
    }
    
    .nav-active-indicator {
        animation: none;
    }
    
    .notification-badge {
        animation: none;
    }
    
    @keyframes fadeInUp,
    @keyframes slideInRight,
    @keyframes slideInLeft,
    @keyframes themeTransition,
    @keyframes rippleEffect,
    @keyframes pulse,
    @keyframes bounce,
    @keyframes navLoading {
        animation: none;
    }
}

/* Print styles for theme system */
@media print {
    .theme-toggle,
    .mobile-menu-overlay,
    .navbar.glass-navbar,
    .breadcrumb-container.glass-breadcrumb,
    .scroll-to-top,
    .page-transition-overlay,
    .theme-transition-overlay {
        display: none !important;
    }
}