/* ==========================================================================
   Family Tree Logger - Modern Design System
   ========================================================================== */

:root {
    /* Color Palette - Dark Theme (Default) */
    --bg-main: #0b0f17;
    --bg-surface: #131b2e;
    --bg-surface-elevated: #1a243d;
    --bg-card: rgba(22, 31, 53, 0.85);
    --bg-glass: rgba(15, 23, 42, 0.75);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.2);
    --border-highlight: #10b981;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --primary: #10b981;
    --primary-hover: #059669;
    --primary-glow: rgba(16, 185, 129, 0.25);
    
    --accent-blue: #38bdf8;
    --accent-rose: #f43f5e;
    --accent-purple: #c084fc;
    --accent-amber: #fbbf24;
    
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    
    --grid-dot: rgba(255, 255, 255, 0.06);
    --tree-line: #3b82f6;
    --tree-line-spouse: #f43f5e;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.5);
    
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Light Theme Variables */
body.light-theme {
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.85);
    
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.2);
    --border-highlight: #059669;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --primary: #059669;
    --primary-hover: #047857;
    --primary-glow: rgba(5, 150, 105, 0.2);
    
    --grid-dot: rgba(0, 0, 0, 0.06);
    --tree-line: #2563eb;
    --tree-line-spouse: #e11d48;
    
    --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
}

/* Base Reset & Layout */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Top App Header */
.app-header {
    height: 64px;
    background: var(--bg-glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: relative;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), #0284c7);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* View Mode Switcher */
.view-toggle-group {
    display: flex;
    background: var(--bg-surface-elevated);
    border-radius: var(--radius-full);
    padding: 3px;
    border: 1px solid var(--border-color);
}

.toggle-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: none;
    padding: 0.35rem 0.9rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all 0.2s ease;
}

.toggle-btn:hover {
    color: var(--text-primary);
}

.toggle-btn.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 2px 8px var(--primary-glow);
}

/* Header Right Actions */
.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    color: var(--text-muted);
    pointer-events: none;
}

.search-box input {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 0.45rem 2rem 0.45rem 2.2rem;
    font-size: 0.825rem;
    color: var(--text-primary);
    width: 220px;
    transition: all 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    width: 280px;
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.clear-search-btn {
    position: absolute;
    right: 0.6rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    display: none;
}

.clear-search-btn.active {
    display: block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-size: 0.825rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-secondary {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--border-hover);
}

.btn.icon-only {
    padding: 0.5rem;
    border-radius: var(--radius-full);
    width: 36px;
    height: 36px;
}

.btn-danger-outline {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger);
}

.btn-danger-outline:hover {
    background: var(--danger-bg);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.35rem;
    min-width: 190px;
    z-index: 100;
    display: none;
    flex-direction: column;
}

.dropdown-menu.show {
    display: flex;
}

.dropdown-item {
    background: transparent;
    border: none;
    text-align: left;
    padding: 0.55rem 0.85rem;
    font-size: 0.825rem;
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s ease;
}

.dropdown-item:hover {
    background: var(--bg-surface-elevated);
}

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

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.3rem 0;
}

/* Main Viewport Container */
.main-viewport {
    width: 100%;
    height: calc(100vh - 64px);
    position: relative;
    overflow: hidden;
}

.view-panel {
    width: 100%;
    height: 100%;
    display: none;
    position: absolute;
    top: 0;
    left: 0;
}

.view-panel.active {
    display: block;
}

/* Tree Viewport & Canvas */
.tree-viewport {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    cursor: grab;
    user-select: none;
    background-color: var(--bg-main);
    background-image: radial-gradient(circle, var(--grid-dot) 1.5px, transparent 1.5px);
    background-size: 28px 28px;
}

.tree-viewport.panning {
    cursor: grabbing;
}

.tree-canvas {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
    will-change: transform;
    pointer-events: auto;
}

/* SVG Connection Lines */
.tree-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: visible;
    z-index: 1;
}

.tree-svg path.relation-line {
    fill: none;
    stroke: var(--tree-line);
    stroke-width: 2.5px;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0.85;
    transition: stroke 0.2s, stroke-width 0.2s, opacity 0.2s;
}

.tree-svg path.relation-line.spouse {
    stroke: var(--tree-line-spouse);
    stroke-width: 2.5px;
    stroke-dasharray: 5 4;
}

.tree-svg circle.relation-joint {
    fill: var(--tree-line);
    opacity: 0.9;
}

.tree-svg path.relation-line.highlighted {
    stroke: var(--accent-amber);
    stroke-width: 3.5px;
    opacity: 1;
}

/* Tree Nodes Layer */
.tree-nodes-layer {
    position: relative;
    z-index: 2;
    padding: 60px;
    min-width: 1000px;
    min-height: 800px;
}

/* Generation Tier Layout */
.generation-row {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 40px;
    margin-bottom: 90px;
    position: relative;
}

.generation-label-tag {
    position: absolute;
    left: 20px;
    top: -24px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    background: var(--bg-surface-elevated);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

/* Family Units */
.family-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.couple-container {
    display: flex;
    align-items: center;
    gap: 20px;
    position: relative;
}

.marriage-symbol {
    width: 24px;
    height: 24px;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--tree-line-spouse);
    color: var(--accent-rose);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    box-shadow: var(--shadow-sm);
    z-index: 5;
}

/* Person Tree Card */
.person-card {
    width: 215px;
    min-height: 110px;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.85rem 1rem;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    position: relative;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.person-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg), 0 0 20px var(--primary-glow);
}

.person-card.male {
    border-left: 4px solid var(--accent-blue);
}

.person-card.female {
    border-left: 4px solid var(--accent-rose);
}

.person-card.other {
    border-left: 4px solid var(--accent-purple);
}

.person-card.selected {
    border-color: var(--accent-amber) !important;
    box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.3), var(--shadow-lg);
}

.person-card.search-match {
    animation: pulseHighlight 1.5s infinite;
}

@keyframes pulseHighlight {
    0%, 100% {
        box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.4), var(--shadow-lg);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0.8), var(--shadow-lg);
    }
}

.card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
}

.card-name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
    word-break: break-word;
}

.status-indicator {
    font-size: 0.65rem;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    font-weight: 600;
    white-space: nowrap;
}

.status-indicator.living {
    background: rgba(16, 185, 129, 0.18);
    color: var(--primary);
}

.status-indicator.deceased {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-secondary);
}

.card-dates {
    margin-top: 0.4rem;
    font-size: 0.775rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.date-row {
    display: flex;
    align-items: center;
    gap: 4px;
}

.date-symbol {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.card-lifespan-badge {
    margin-top: 0.4rem;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-muted);
}

/* Card Quick Hover Actions */
.card-quick-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
    margin-top: 0.5rem;
    padding-top: 0.4rem;
    border-top: 1px solid var(--border-color);
    opacity: 0.6;
    transition: opacity 0.2s;
}

.person-card:hover .card-quick-actions {
    opacity: 1;
}

.card-action-btn {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    padding: 2px 6px;
    cursor: pointer;
    transition: all 0.15s;
}

.card-action-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* Canvas Floating Controls */
.canvas-controls {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.control-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s;
}

.control-btn:hover {
    background: var(--bg-surface-elevated);
}

.control-btn.auto-sort-btn {
    width: auto;
    padding: 0 12px;
    font-size: 0.775rem;
    gap: 6px;
}

.control-divider {
    width: 1px;
    height: 18px;
    background: var(--border-color);
    margin: 0 2px;
}

.canvas-hint {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--text-muted);
    z-index: 10;
    pointer-events: none;
}

/* Registry List View Panel */
.list-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    height: 100%;
    overflow-y: auto;
}

.list-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.list-header-row h2 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
}

.table-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.registry-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.85rem;
}

.registry-table th {
    background: var(--bg-surface-elevated);
    padding: 0.85rem 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.registry-table th:hover {
    color: var(--text-primary);
}

.sort-indicator {
    font-size: 0.75rem;
    margin-left: 4px;
    opacity: 0.5;
}

.registry-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.registry-table tr:hover td {
    background: var(--bg-surface-elevated);
}

.table-person-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.gender-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.725rem;
    font-weight: 500;
    text-transform: capitalize;
}

.gender-tag.male {
    background: rgba(56, 189, 248, 0.15);
    color: var(--accent-blue);
}

.gender-tag.female {
    background: rgba(244, 63, 94, 0.15);
    color: var(--accent-rose);
}

.gender-tag.other {
    background: rgba(192, 132, 252, 0.15);
    color: var(--accent-purple);
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
    animation: fadeIn 0.2s ease;
}

.modal-dialog {
    width: 100%;
    max-width: 520px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-dialog-sm {
    max-width: 440px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(20px) scale(0.98); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2, .modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.close-btn {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    transition: color 0.15s;
}

.close-btn:hover {
    color: var(--text-primary);
}

.person-form, .modal-body {
    padding: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.1rem;
}

.form-row .form-group {
    margin-bottom: 0;
}

.flex-1 {
    flex: 1;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group label .req {
    color: var(--danger);
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.85rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.875rem;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-divider {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.4rem;
    margin: 1.25rem 0 1rem 0;
}

.custom-checkbox {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    cursor: pointer;
    margin-top: 0.5rem;
}

.custom-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
}

.modal-footer.justify-between {
    justify-content: space-between;
}

.footer-actions {
    display: flex;
    gap: 0.5rem;
}

/* Details Modal Specifics */
.detail-item {
    margin-bottom: 0.85rem;
}

.detail-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
}

.detail-val {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-top: 2px;
}

/* Toast Notification */
.toast-notification {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
}

.toast-notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    padding: 2rem;
}

.empty-state h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    max-width: 400px;
    margin-bottom: 1.5rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-header {
        padding: 0 1rem;
    }
    
    .brand-subtitle, .view-toggle-group span, .canvas-hint {
        display: none;
    }
    
    .search-box input {
        width: 140px;
    }
    
    .search-box input:focus {
        width: 180px;
    }
    
    .btn span {
        display: none;
    }
    
    .btn {
        padding: 0.5rem;
    }
}