/* ============================================
   ARBRE GÉNÉALOGIQUE - Design System
   Palette: Beige, Crème, Accents Dorés
   ============================================ */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* ============================================
   CSS Variables - Design Tokens
   ============================================ */
:root {
    /* Primary Colors */
    --color-cream: #FFF8F0;
    --color-cream-light: #FFFDFB;
    --color-beige: #F5F0E8;
    --color-beige-warm: #EDE5D8;
    --color-beige-dark: #E8DFD3;

    /* Accent Colors */
    --color-gold: #D4A574;
    --color-gold-light: #E5C4A1;
    --color-gold-dark: #B8915F;
    --color-rose: #E8C4B8;
    --color-rose-light: #F5DED6;

    /* Text Colors */
    --color-text-primary: #3D3428;
    --color-text-secondary: #6B5D4D;
    --color-text-muted: #9A8B78;

    /* UI Colors */
    --color-border: #E0D6C8;
    --color-shadow: rgba(93, 78, 60, 0.08);
    --color-shadow-hover: rgba(93, 78, 60, 0.15);
    --color-overlay: rgba(61, 52, 40, 0.4);

    /* Tree Colors */
    --color-tree-line: #D4C4B0;
    --color-tree-line-active: #D4A574;
    --color-node-bg: #FFFFFF;
    --color-node-border: #E8DFD3;

    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(145deg, var(--color-cream) 0%, var(--color-beige) 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
}

/* ============================================
   Layout
   ============================================ */
.app-container {
    display: grid;
    grid-template-rows: auto 1fr;
    grid-template-columns: 1fr 380px;
    height: 100vh;
    gap: 0;
}

.app-header {
    grid-column: 1 / -1;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 100;
}

.tree-container {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 20% 30%, rgba(212, 165, 116, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(232, 196, 184, 0.08) 0%, transparent 50%),
        var(--color-cream);
}

.sidebar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--color-border);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header Styles
   ============================================ */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.3);
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.logo span {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

/* Search Bar */
.search-container {
    position: relative;
    width: 360px;
}

.search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-lg);
    padding-left: 48px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    background: var(--color-beige);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    transition: var(--transition-normal);
    outline: none;
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-input:focus {
    background: white;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 4px rgba(212, 165, 116, 0.15);
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
    transition: var(--transition-fast);
}

.search-input:focus+.search-icon {
    color: var(--color-gold);
}

.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px var(--color-shadow-hover);
    border: 1px solid var(--color-border);
    max-height: 320px;
    overflow-y: auto;
    z-index: 200;
    display: none;
}

.search-results.active {
    display: block;
    animation: slideDown var(--transition-normal) forwards;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.search-result-item {
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 1px solid var(--color-beige);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: var(--color-beige);
}

.search-result-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-rose-light) 0%, var(--color-rose) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.search-result-info h4 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.search-result-info span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Header Actions */
.header-actions {
    display: flex;
    gap: var(--space-sm);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-normal);
    outline: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 165, 116, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-beige);
    color: var(--color-text-secondary);
}

.btn-secondary:hover {
    background: var(--color-beige-dark);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: var(--color-beige);
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* Dropdown Button */
.btn-dropdown-container {
    position: relative;
}

.dropdown-icon {
    margin-left: var(--space-xs);
    transition: var(--transition-fast);
}

.btn-dropdown-container.open .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px var(--color-shadow-hover);
    border: 1px solid var(--color-border);
    min-width: 200px;
    overflow: hidden;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-normal);
}

.btn-dropdown-container.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    width: 100%;
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-beige);
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: left;
}

.dropdown-item:last-child {
    border-bottom: none;
}

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

.dropdown-item svg {
    color: var(--color-gold);
}

/* Person List (for death declaration) */
.person-list {
    max-height: 400px;
    overflow-y: auto;
    margin-top: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.person-list-item {
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 1px solid var(--color-beige);
}

.person-list-item:last-child {
    border-bottom: none;
}

.person-list-item:hover {
    background: var(--color-beige);
}

.person-list-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-rose-light) 0%, var(--color-rose) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    flex-shrink: 0;
}

.person-list-info {
    flex: 1;
}

.person-list-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.person-list-details {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.person-list-empty {
    padding: var(--space-xl);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Deceased Badge */
.deceased-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 12px;
    background: rgba(107, 93, 77, 0.1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-top: var(--space-sm);
}

/* Person ID Display */
.person-id {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-weight: 400;
    margin-top: 2px;
    font-style: italic;
}

/* Searchable Select */
.searchable-select {
    position: relative;
}

.searchable-select input {
    margin-bottom: var(--space-sm);
}

.searchable-select select {
    max-height: 200px;
}

/* ============================================
   Sidebar Styles
   ============================================ */
.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.sidebar-subtitle {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.sidebar-content {
    flex: 1;
    padding: var(--space-lg);
    overflow-y: auto;
}

/* Person Card in Sidebar */
.person-card {
    background: var(--color-beige);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.person-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.person-avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.25);
}

.person-name {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.person-dates {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.person-details {
    display: grid;
    gap: var(--space-md);
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.detail-icon {
    width: 36px;
    height: 36px;
    background: white;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gold);
    flex-shrink: 0;
}

.detail-content label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.detail-content span {
    font-size: 0.95rem;
    color: var(--color-text-primary);
    font-weight: 500;
}

/* Children List */
.children-section {
    margin-top: var(--space-lg);
}

.children-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.children-count {
    background: var(--color-gold);
    color: white;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.children-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.child-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: white;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.child-item:hover {
    background: var(--color-cream);
    transform: translateX(4px);
}

.child-avatar {
    width: 32px;
    height: 32px;
    background: var(--color-rose-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.child-name {
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    background: var(--color-beige);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    color: var(--color-text-muted);
    font-size: 2rem;
}

.empty-state h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.empty-state p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ============================================
   Tree Visualization
   ============================================ */
#tree-svg {
    width: 100%;
    height: 100%;
}

.tree-node {
    cursor: pointer;
}

.node-card {
    fill: var(--color-node-bg);
    stroke: var(--color-node-border);
    stroke-width: 2;
    transition: var(--transition-normal);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.05));
}

.tree-node:hover .node-card {
    stroke: var(--color-gold);
    filter: drop-shadow(0 8px 16px rgba(212, 165, 116, 0.2));
}

.tree-node.selected .node-card {
    stroke: var(--color-gold);
    stroke-width: 3;
}

.node-name {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    fill: var(--color-text-primary);
}

.node-dates {
    font-family: var(--font-body);
    font-size: 11px;
    fill: var(--color-text-muted);
}

.node-avatar-bg {
    fill: var(--color-gold-light);
}

.node-avatar-text {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    fill: white;
}

/* Tree Links */
.tree-link {
    fill: none;
    stroke: var(--color-tree-line);
    stroke-width: 2;
    stroke-linecap: round;
}

.tree-link.highlighted {
    stroke: var(--color-gold);
    stroke-width: 3;
    animation: pathPulse 2s ease-in-out infinite;
}

@keyframes pathPulse {

    0%,
    100% {
        stroke-opacity: 1;
    }

    50% {
        stroke-opacity: 0.5;
    }
}

/* Path animation */
.path-animate {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawPath 1.5s ease forwards;
}

@keyframes drawPath {
    to {
        stroke-dashoffset: 0;
    }
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-overlay);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.15);
    transform: scale(0.95) translateY(20px);
    transition: var(--transition-bounce);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--color-beige);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-beige-dark);
}

.modal-body {
    padding: var(--space-xl);
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

/* ============================================
   Form Styles
   ============================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.form-input,
.form-select {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    background: var(--color-beige);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: var(--transition-normal);
    outline: none;
}

.form-input:focus,
.form-select:focus {
    background: white;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 4px rgba(212, 165, 116, 0.15);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px var(--color-shadow-hover);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    animation: toastIn var(--transition-bounce) forwards;
}

.toast.hiding {
    animation: toastOut var(--transition-normal) forwards;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastOut {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

.toast-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-success .toast-icon {
    background: #D4EDDA;
    color: #155724;
}

.toast-error .toast-icon {
    background: #F8D7DA;
    color: #721C24;
}

.toast-message {
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

/* ============================================
   Loading States
   ============================================ */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-beige);
    border-top-color: var(--color-gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 248, 240, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--space-md);
}

.loading-text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ============================================
   Zoom Controls
   ============================================ */
.zoom-controls {
    position: absolute;
    bottom: var(--space-xl);
    left: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    background: white;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px var(--color-shadow);
    padding: var(--space-xs);
}

.zoom-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: 1.2rem;
    transition: var(--transition-fast);
}

.zoom-btn:hover {
    background: var(--color-beige);
    color: var(--color-gold);
}

.zoom-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-xs) 0;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
    }

    .sidebar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: auto;
        max-height: 60vh;
        border-left: none;
        border-top: 1px solid var(--color-border);
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        transform: translateY(calc(100% - 60px));
        transition: var(--transition-normal);
        z-index: 150;
        box-shadow: 0 -4px 20px var(--color-shadow-hover);
    }

    .sidebar.open {
        transform: translateY(0);
    }

    .sidebar-header {
        cursor: pointer;
        user-select: none;
        position: relative;
    }

    .sidebar-header::after {
        content: "";
        position: absolute;
        top: 50%;
        right: var(--space-lg);
        width: 40px;
        height: 4px;
        background: var(--color-border);
        border-radius: var(--radius-full);
        transform: translateY(-50%);
    }

    .search-container {
        width: 100%;
        max-width: 300px;
    }

    .tree-container {
        touch-action: pan-x pan-y;
    }
}

@media (max-width: 640px) {
    .app-header {
        flex-wrap: wrap;
        gap: var(--space-md);
        padding: var(--space-md);
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .logo span {
        font-size: 0.75rem;
    }

    .search-container {
        order: 3;
        max-width: 100%;
        width: 100%;
    }

    .modal {
        width: 95%;
        border-radius: var(--radius-lg);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .sidebar {
        max-height: 70vh;
    }

    .zoom-controls {
        bottom: var(--space-md);
        left: var(--space-md);
        transform: scale(0.9);
    }

    .sidebar-content {
        padding: var(--space-md);
    }

    .person-card {
        padding: var(--space-md);
    }
}