/* Universal Navigation Styles for PDGM Lookup Tool */

.pdgm-universal-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    z-index: 1000;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-left,
.nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
    margin: 0 16px;
}

.nav-button {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    color: #475569;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-button:hover {
    background: #e2e8f0;
    color: #334155;
    border-color: #cbd5e1;
}

.nav-button:active {
    background: #cbd5e1;
}

.nav-button svg {
    flex-shrink: 0;
}

.back-button {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.back-button:hover {
    background: #2563eb;
    border-color: #2563eb;
    color: white;
}

.home-button {
    background: #10b981;
    color: white;
    border-color: #10b981;
}

.home-button:hover {
    background: #059669;
    border-color: #059669;
    color: white;
}

.breadcrumb-container {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: #6b7280;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-link {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb-link:hover {
    color: #2563eb;
    text-decoration: underline;
}

.breadcrumb-separator {
    color: #9ca3af;
    font-weight: 300;
}

.current-page {
    color: #1f2937;
    font-weight: 600;
}

.menu-button {
    background: #6b7280;
    color: white;
    border-color: #6b7280;
}

.menu-button:hover {
    background: #4b5563;
    border-color: #4b5563;
    color: white;
}

/* Navigation Menu */
.nav-menu {
    position: absolute;
    top: 100%;
    right: 16px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    min-width: 280px;
    max-height: 400px;
    overflow-y: auto;
    z-index: 1001;
}

.menu-section {
    padding: 16px;
    border-bottom: 1px solid #f3f4f6;
}

.menu-section:last-child {
    border-bottom: none;
}

.menu-section h4 {
    margin: 0 0 12px 0;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: #6b7280;
    letter-spacing: 0.05em;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    color: #374151;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.875rem;
    transition: background-color 0.2s ease;
    margin-bottom: 4px;
}

.menu-item:hover {
    background: #f3f4f6;
    color: #1f2937;
}

.menu-item:last-child {
    margin-bottom: 0;
}

.menu-item.disabled {
    color: #9ca3af;
    cursor: not-allowed;
}

.menu-item.disabled:hover {
    background: transparent;
}

.menu-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.recent-page {
    font-size: 0.8125rem;
    color: #6b7280;
}

.recent-page:hover {
    color: #374151;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .nav-container {
        height: 70px;
        padding: 0 12px;
    }
    
    .nav-center {
        margin: 0 8px;
    }
    
    .nav-button {
        padding: 6px 8px;
        font-size: 0.8125rem;
    }
    
    .nav-button span {
        display: none;
    }
    
    .breadcrumb-container {
        font-size: 0.8125rem;
    }
    
    .breadcrumb-item {
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .nav-menu {
        right: 12px;
        left: 12px;
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .nav-left,
    .nav-right {
        gap: 4px;
    }
    
    .nav-button {
        padding: 6px;
        min-width: 36px;
        justify-content: center;
    }
    
    .breadcrumb-container {
        font-size: 0.75rem;
    }
    
    .breadcrumb-item {
        max-width: 80px;
    }
    
    .breadcrumb-separator {
        display: none;
    }
    
    .current-page::before {
        content: '• ';
        color: #9ca3af;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .pdgm-universal-nav {
        border-bottom-width: 2px;
    }
    
    .nav-button {
        border-width: 2px;
    }
    
    .nav-menu {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .nav-button,
    .menu-item {
        transition: none;
    }
}

/* Dark mode support (if implemented) */
@media (prefers-color-scheme: dark) {
    .pdgm-universal-nav {
        background: #1f2937;
        border-bottom-color: #374151;
    }
    
    .nav-button {
        background: #374151;
        border-color: #4b5563;
        color: #e5e7eb;
    }
    
    .nav-button:hover {
        background: #4b5563;
        border-color: #6b7280;
        color: #f9fafb;
    }
    
    .breadcrumb-container {
        color: #9ca3af;
    }
    
    .breadcrumb-link {
        color: #60a5fa;
    }
    
    .breadcrumb-link:hover {
        color: #93c5fd;
    }
    
    .current-page {
        color: #f3f4f6;
    }
    
    .nav-menu {
        background: #1f2937;
        border-color: #374151;
    }
    
    .menu-section {
        border-bottom-color: #374151;
    }
    
    .menu-section h4 {
        color: #9ca3af;
    }
    
    .menu-item {
        color: #d1d5db;
    }
    
    .menu-item:hover {
        background: #374151;
        color: #f3f4f6;
    }
    
    .menu-item.disabled {
        color: #6b7280;
    }
    
    .recent-page {
        color: #9ca3af;
    }
    
    .recent-page:hover {
        color: #d1d5db;
    }
}

/* Print styles */
@media print {
    .pdgm-universal-nav {
        display: none;
    }
    
    body {
        padding-top: 0 !important;
    }
}