/* Import Modular CSS Files */
@import url('./variables.css');
@import url('./base.css');
@import url('./layout.css');
@import url('./components.css');
@import url('./utilities.css');

/* Legacy Bootstrap compatibility styles */
.table {
    width: 100%;
    margin-bottom: var(--spacing-lg);
    background-color: transparent;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-sm) var(--spacing-md);
    vertical-align: top;
    border-top: 1px solid var(--gray-200);
}

.table thead th {
    vertical-align: bottom;
    border-bottom: 2px solid var(--gray-300);
    background-color: var(--gray-50);
    font-weight: var(--font-weight-semibold);
    color: var(--gray-700);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--gray-50);
}

.table-hover tbody tr:hover {
    background-color: var(--gray-100);
}

/* D3.js Family Tree specific styles */
.family-tree-container {
    width: 100%;
    height: 600px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
}

.node circle {
    fill: var(--primary-100);
    stroke: var(--primary-500);
    stroke-width: 2px;
    transition: all 0.3s ease;
}

.node circle:hover {
    fill: var(--primary-200);
    stroke: var(--primary-600);
    stroke-width: 3px;
    cursor: pointer;
}

.node text {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-sm);
    fill: var(--gray-700);
    text-anchor: middle;
    alignment-baseline: middle;
}

.link {
    fill: none;
    stroke: var(--gray-400);
    stroke-width: 2px;
    stroke-opacity: 0.7;
}

/* Custom animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.slide-in {
    animation: slideIn 0.4s ease-out forwards;
}

/* Responsive helpers */
@media (max-width: 768px) {
    .d-md-none {
        display: none !important;
    }
    
    .d-md-block {
        display: block !important;
    }
    
    .family-tree-container {
        height: 400px;
    }
}

@media (max-width: 576px) {
    .d-sm-none {
        display: none !important;
    }
    
    .d-sm-block {
        display: block !important;
    }
    
    .family-tree-container {
        height: 300px;
    }
}

/* Backward compatibility for existing Bootstrap classes */
.btn-primary {
    background-color: var(--primary-500);
    border-color: var(--primary-500);
    color: white;
}

.btn-secondary {
    background-color: var(--gray-500);
    border-color: var(--gray-500);
    color: white;
}

.btn-success {
    background-color: var(--success-500);
    border-color: var(--success-500);
    color: white;
}

.btn-danger {
    background-color: var(--error-500);
    border-color: var(--error-500);
    color: white;
}

.btn-warning {
    background-color: var(--warning-500);
    border-color: var(--warning-500);
    color: var(--gray-900);
}

.btn-info {
    background-color: var(--info-500);
    border-color: var(--info-500);
    color: white;
}

/* Enhanced card styles for family tree application */
.stats-card {
    transition: var(--transition-base);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.stats-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-200);
}

.stats-icon {
    opacity: 0.8;
}

/* Text gradient utility */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

/* Auth pages specific styles */
.auth-container {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--info-50) 100%);
}

.auth-card {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.auth-icon-wrapper {
    display: inline-block;
    padding: var(--spacing-lg);
    background: var(--success-100);
    border-radius: var(--radius-full);
}

.auth-title {
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.auth-subtitle {
    color: var(--gray-600);
    font-size: var(--font-size-lg);
}

/* Professional Navigation Enhancements */
.navbar {
    /* Add subtle glass morphism effect */
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    background: linear-gradient(135deg, 
        rgba(102, 126, 234, 0.95) 0%, 
        rgba(76, 91, 196, 0.95) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

/* Professional focus indicators */
.nav-link:focus,
.dropdown-item:focus,
.navbar-toggler:focus {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 2px;
    border-radius: var(--radius-md);
}

/* Enhanced dropdown animations */
.dropdown-menu {
    transform-origin: top center;
    transition: all 0.2s cubic-bezier(0.165, 0.84, 0.44, 1);
    backdrop-filter: blur(10px) saturate(150%);
    -webkit-backdrop-filter: blur(10px) saturate(150%);
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    right: 16px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid rgba(255, 255, 255, 0.95);
    filter: drop-shadow(0 -1px 1px rgba(0, 0, 0, 0.1));
}

/* Professional hover states for nav items */
.nav-link {
    position: relative;
    overflow: hidden;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: calc(100% - var(--spacing-lg));
}

/* Professional mobile navigation improvements */
@media (max-width: 991.98px) {
    /* Add slide-in animation for mobile menu */
    .navbar-collapse {
        transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        transform: translateY(-10px);
        opacity: 0;
    }
    
    .navbar-collapse.show {
        transform: translateY(0);
        opacity: 1;
    }
    
    /* Professional mobile nav styling */
    .navbar-collapse {
        background: linear-gradient(135deg, 
            rgba(0, 0, 0, 0.15) 0%, 
            rgba(0, 0, 0, 0.1) 100%);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border: 1px solid rgba(255, 255, 255, 0.2);
        box-shadow: 
            0 8px 32px rgba(0, 0, 0, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.2);
    }
    
    /* Professional mobile nav links */
    .nav-link {
        border: 1px solid transparent;
        margin-bottom: var(--spacing-xs);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .nav-link:hover {
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.2);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .nav-link.active {
        background: rgba(255, 255, 255, 0.2);
        border-color: rgba(255, 255, 255, 0.3);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
}

/* Professional mobile optimizations */
@media (max-width: 991.98px) {
    .brand-text {
        display: inline-block;
        max-width: 180px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-weight: var(--font-weight-bold);
    }
    
    .nav-link span {
        margin-left: var(--spacing-sm);
    }
    
    /* Professional touch targets for mobile */
    .nav-link {
        min-height: 48px;
        min-width: 48px;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .dropdown-item {
        min-height: 44px;
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .btn {
        min-height: 44px;
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .navbar-toggler {
        min-height: 48px;
        min-width: 48px;
    }
}

@media (max-width: 576px) {
    .brand-text {
        max-width: 140px;
        font-size: var(--font-size-base);
    }
    
    /* Stack elements vertically on very small screens */
    .d-flex.flex-wrap > * {
        margin-bottom: var(--spacing-xs);
    }
    
    /* Ensure buttons are full width on mobile when needed */
    .mobile-full-width {
        width: 100% !important;
    }
    
    /* Reduce font sizes slightly on very small screens */
    .display-1 { font-size: var(--font-size-4xl); }
    .display-2 { font-size: var(--font-size-3xl); }
    .display-3 { font-size: var(--font-size-2xl); }
    .display-4 { font-size: var(--font-size-xl); }
    .display-5 { font-size: var(--font-size-lg); }
    .display-6 { font-size: var(--font-size-base); }
    
    /* Better mobile navigation */
    .nav-link {
        font-size: var(--font-size-base);
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .dropdown-item {
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs) var(--spacing-md);
    }
}

/* Loading overlay for mobile */
.mobile-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-50);
    backdrop-filter: blur(2px);
}

.mobile-loading .spinner {
    width: 40px;
    height: 40px;
    border-width: 4px;
    border-color: white;
    border-right-color: transparent;
}

/* Accessibility improvements for mobile */
@media (max-width: 768px) {
    /* Larger touch targets */
    .btn-sm {
        min-height: 40px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    /* Better focus states on mobile */
    .nav-link:focus,
    .dropdown-item:focus,
    .btn:focus {
        outline: 2px solid var(--primary-400);
        outline-offset: 2px;
        box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
    }
    
    /* Improve form field sizing */
    .form-control,
    .form-select {
        min-height: 44px;
        font-size: 16px; /* Prevents zoom on iOS */
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    /* Better modal sizing */
    .modal-dialog {
        margin: var(--spacing-sm);
        max-width: calc(100% - var(--spacing-md));
    }
}

/* Professional navigation polish */
.navbar-nav .nav-link {
    position: relative;
    z-index: 1;
}

.navbar-nav .nav-item.dropdown .nav-link {
    padding-right: calc(var(--spacing-md) + 16px);
}

/* Professional dropdown indicators */
.dropdown-toggle::after {
    transition: transform 0.2s ease;
}

.dropdown-toggle[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

/* Loading states for navigation */
.nav-link.loading {
    pointer-events: none;
    opacity: 0.7;
}

.nav-link.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Professional animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Apply animations to navigation elements */
.navbar-collapse.show .nav-item {
    animation: fadeInDown 0.3s ease-out forwards;
}

.navbar-collapse.show .nav-item:nth-child(2) { animation-delay: 0.1s; }
.navbar-collapse.show .nav-item:nth-child(3) { animation-delay: 0.2s; }
.navbar-collapse.show .nav-item:nth-child(4) { animation-delay: 0.3s; }
.navbar-collapse.show .nav-item:nth-child(5) { animation-delay: 0.4s; }

.dropdown-menu.show .dropdown-item {
    animation: slideInRight 0.2s ease-out forwards;
}

.dropdown-menu.show .dropdown-item:nth-child(2) { animation-delay: 0.05s; }
.dropdown-menu.show .dropdown-item:nth-child(3) { animation-delay: 0.1s; }
.dropdown-menu.show .dropdown-item:nth-child(4) { animation-delay: 0.15s; }

/* High contrast mode support */
@media (prefers-contrast: high) {
    .nav-link {
        border: 1px solid transparent;
    }
    
    .nav-link:hover,
    .nav-link.active {
        border-color: white;
    }
    
    .dropdown-menu {
        border-width: 2px;
    }
}