/* Professional Enhancement CSS */
/* Additional modern styling for Pass Fast With AI */

/* Glass morphism effects */
.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Modern loading states */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Enhanced button states */
.btn-modern {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    border: none;
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

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

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* Course cards enhancement */
.course-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.course-card .card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    border: none;
}

.course-card .price-tag {
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 1.1rem;
    display: inline-block;
    margin-top: 1rem;
}

/* Form enhancements */
.form-floating-modern {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-floating-modern input,
.form-floating-modern select,
.form-floating-modern textarea {
    width: 100%;
    padding: 1rem 1rem 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: transparent;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-floating-modern label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--text-light);
    pointer-events: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.form-floating-modern input:focus,
.form-floating-modern input:not(:placeholder-shown),
.form-floating-modern select:focus,
.form-floating-modern textarea:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-floating-modern input:focus + label,
.form-floating-modern input:not(:placeholder-shown) + label,
.form-floating-modern select:focus + label,
.form-floating-modern textarea:focus + label {
    top: 0.25rem;
    font-size: 0.75rem;
    color: var(--secondary-color);
    font-weight: 600;
}

/* Status badges */
.status-badge {
    padding: 0.375rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.success {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-badge.warning {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.status-badge.danger {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-badge.info {
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Progress bars */
.progress-modern {
    background: var(--background-light);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-modern .progress-bar {
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s ease;
    position: relative;
    overflow: hidden;
}

.progress-modern .progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.2) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0.2) 75%,
        transparent 75%,
        transparent
    );
    background-size: 20px 20px;
    animation: move 1s linear infinite;
}

@keyframes move {
    0% { background-position: 0 0; }
    100% { background-position: 20px 20px; }
}

/* Tooltip enhancements */
.tooltip-modern {
    position: relative;
    display: inline-block;
}

.tooltip-modern .tooltip-text {
    visibility: hidden;
    background: var(--text-color);
    color: white;
    text-align: center;
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    position: absolute;
    z-index: 1000;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: all 0.3s ease;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
}

.tooltip-modern .tooltip-text::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--text-color) transparent transparent transparent;
}

.tooltip-modern:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateY(-4px);
}

/* Notification system */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    z-index: 10000;
    transform: translateX(400px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
    max-width: 300px;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: linear-gradient(135deg, var(--success-color), #10b981);
}

.notification.error {
    background: linear-gradient(135deg, var(--danger-color), #f87171);
}

.notification.info {
    background: linear-gradient(135deg, var(--info-color), #60a5fa);
}

/* Modal enhancements */
.modal-modern .modal-content {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.modal-modern .modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1.5rem;
}

.modal-modern .modal-body {
    padding: 2rem;
}

.modal-modern .modal-footer {
    background: var(--background-light);
    border: none;
    padding: 1.25rem 2rem;
}

/* Table enhancements */
.table-modern {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.table-modern thead {
    background: linear-gradient(135deg, var(--background-light), white);
}

.table-modern th {
    font-weight: 600;
    color: var(--text-color);
    padding: 1rem 1.5rem;
    border: none;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table-modern td {
    padding: 1rem 1.5rem;
    border: none;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}

.table-modern tbody tr:hover {
    background: var(--background-light);
}

/* Responsive improvements */
@media (max-width: 768px) {
    .course-card {
        margin-bottom: 1.5rem;
    }
    
    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
        transform: translateY(-100px);
    }
    
    .notification.show {
        transform: translateY(0);
    }
    
    .modal-modern .modal-body {
        padding: 1.5rem;
    }
}

/* Dark mode support (for future implementation) */
@media (prefers-color-scheme: dark) {
    .glass-card {
        background: rgba(31, 41, 55, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .course-card {
        background: var(--background-color);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .btn,
    .notification {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* Accessibility: ensure div/card headers are readable on light backgrounds */
.card-header.bg-light {
    background-color: #f1f5f9 !important; /* do not use --background-light here */
    color: #1f2937 !important;
}

.card-header.bg-white {
    background-color: #ffffff !important;
    color: #1f2937 !important;
}

/* Stronger default for generic bg-light headers if used as div headers */
.bg-light.card-header, .card .bg-light.card-header {
    background-color: #f1f5f9 !important;
}