/* ===== LAYOUT SPECIFIC STYLES ===== */

/* Body and HTML */
html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
}

/* Navbar Enhancements */
.navbar {
    background-color: var(--primary-color) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--primary-dark);
}

.navbar-brand {
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    color: white !important;
}

.navbar-brand:hover {
    color: var(--primary-light) !important;
}

.nav-link {
    transition: all var(--transition-fast);
    border-radius: var(--radius-md);
    margin: 0 0.25rem;
    color: rgba(255, 255, 255, 0.9) !important;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white !important;
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    font-weight: 600;
    color: white !important;
}

.dropdown-menu {
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    padding: 0.5rem 1rem;
    color: var(--text-primary);
}

.dropdown-item:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.dropdown-divider {
    margin: 0.5rem 0;
    border-color: var(--border-color);
}

/* Breadcrumb */
.breadcrumb {
    background: transparent;
    font-size: 0.875rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--text-secondary);
    font-weight: bold;
}

.breadcrumb-item a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    color: var(--primary-color);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

/* Footer */
footer {
    margin-top: auto;
    background: var(--background-primary) !important;
    border-top: 1px solid var(--border-color);
}

footer a {
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

footer a:hover {
    color: var(--primary-color) !important;
}

/* Back to Top Button */
.btn-floating {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: none;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    background: var(--primary-color);
    border: none;
    color: white;
}

.btn-floating:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-xl);
    color: white;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loading-spinner {
    text-align: center;
}

.loading-spinner .spinner-border {
    width: 3rem;
    height: 3rem;
    color: var(--primary-color);
}

/* Alert Enhancements */
.alert {
    border: 1px solid;
    border-left: 4px solid;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.alert-success {
    border-left-color: var(--success-color);
    border-color: #a7f3d0;
}

.alert-danger {
    border-left-color: var(--danger-color);
    border-color: #fecaca;
}

.alert-warning {
    border-left-color: var(--warning-color);
    border-color: #fde68a;
}

.alert-info {
    border-left-color: var(--info-color);
    border-color: #a5f3fc;
}

.alert .btn-close {
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.alert .btn-close:hover {
    opacity: 1;
}

/* Mobile Navigation */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: var(--background-primary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        margin-top: 1rem;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-collapse .nav-link {
        color: var(--text-primary) !important;
        padding: 0.75rem 1rem;
        margin: 0.25rem 0;
    }
    
    .navbar-collapse .nav-link:hover {
        background-color: var(--primary-light);
        color: var(--primary-color) !important;
    }
    
    .navbar-collapse .dropdown-menu {
        background: var(--background-secondary);
        box-shadow: none;
        border: 1px solid var(--border-color);
        margin-left: 1rem;
    }
    
    .btn-floating {
        bottom: 1rem;
        right: 1rem;
        width: 2.5rem;
        height: 2.5rem;
    }
}

/* Tablet adjustments */
@media (max-width: 768px) {
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    footer .row {
        text-align: center;
    }
    
    footer .col-md-6:last-child {
        margin-top: 1rem;
    }
}

/* Small mobile adjustments */
@media (max-width: 576px) {
    .navbar-brand span {
        font-size: 1rem;
    }
    
    .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    .alert {
        margin-left: -0.75rem;
        margin-right: -0.75rem;
        border-radius: 0;
        border-left: 4px solid;
    }
    
    footer {
        padding: 1rem 0;
    }
    
    footer .d-flex {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Print styles */
@media print {
    .navbar,
    .breadcrumb,
    footer,
    .btn-floating,
    .loading-overlay,
    .alert {
        display: none !important;
    }
    
    main {
        margin: 0 !important;
        padding: 0 !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .navbar {
        border-bottom: 2px solid var(--text-primary);
    }
    
    .nav-link:hover {
        background-color: var(--text-primary);
    }
    
    .dropdown-item:hover {
        background-color: var(--text-primary);
        color: white;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .navbar-brand,
    .nav-link,
    .dropdown-item,
    .btn-floating,
    .alert .btn-close {
        transition: none;
    }
    
    .btn-floating:hover {
        transform: none;
    }
}