/* ==========================================================
   Родословное древо — классический стиль
   Палитра: пергамент/кремовый фон, тёмно-зелёные узлы,
   золотисто-охристые акценты, шрифты с засечками.
   ========================================================== */

:root {
    --color-bg:            #f3ecd9;
    --color-bg-texture:    #ece2c9;
    --color-paper:         #fbf6ea;
    --color-ink:           #3b2f22;
    --color-ink-soft:      #6b5a45;
    --color-node:          #4a5d4e;
    --color-node-dark:     #3a4a3e;
    --color-node-text:     #f4ede0;
    --color-node-border:   #2e3b31;
    --color-accent:        #b6862c;
    --color-accent-light:  #d9b45f;
    --color-line:          #8a7a5c;
    --color-danger:        #8c3b2e;
    --shadow-node:         0 2px 6px rgba(43, 33, 20, 0.25);
    --font-serif: 'PT Serif', Georgia, 'Times New Roman', serif;
    --font-sans:  'PT Sans', 'Segoe UI', Tahoma, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    background-image:
        radial-gradient(circle at 20% 20%, var(--color-bg-texture) 0%, transparent 60%),
        radial-gradient(circle at 80% 60%, var(--color-bg-texture) 0%, transparent 55%);
    color: var(--color-ink);
    font-family: var(--font-sans);
    min-height: 100vh;
}

/* ---------- Header ---------- */

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 36px;
    background: linear-gradient(180deg, var(--color-node) 0%, var(--color-node-dark) 100%);
    color: var(--color-node-text);
    border-bottom: 4px solid var(--color-accent);
    box-shadow: 0 3px 10px rgba(0,0,0,0.25);
}

.site-header h1 {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin: 0;
}

.site-header .ornament {
    font-size: 13px;
    color: var(--color-accent-light);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-top: 4px;
    display: block;
}

.header-actions a {
    color: var(--color-node-text);
    text-decoration: none;
    border: 1px solid var(--color-accent-light);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
    transition: background .15s ease;
}

.header-actions a:hover {
    background: rgba(217, 180, 95, 0.18);
}

/* ---------- Tree wrapper ---------- */

#tree-wrapper {
    position: relative;
    width: 100%;
    height: calc(100vh - 90px);
    overflow: hidden;
    cursor: grab;
    touch-action: none;
    background: var(--color-bg);
    background-image:
        radial-gradient(circle at 20% 20%, var(--color-bg-texture) 0%, transparent 60%),
        radial-gradient(circle at 80% 60%, var(--color-bg-texture) 0%, transparent 55%);
}

#tree-wrapper.is-dragging {
    cursor: grabbing;
}

#tree-canvas {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
    will-change: transform;
    padding: 70px 90px;
    display: inline-flex;
}

#connector-svg {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    overflow: visible;
}

#tree-root {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.node-group {
    display: flex;
    align-items: center;
}

/* Горизонтальный контейнер одного узла: пилюля слева, колонка потомков справа */
.node-branch {
    display: flex;
    flex-direction: row;
    align-items: center;
}

/* Вертикальный контейнер для корневых узлов верхнего уровня */
.roots-column {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 14px;
}

.node-row {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 2;
}

.children-column {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 16px;
    margin-left: 76px;
    position: relative;
}

.children-column.collapsed {
    display: none;
}

/* ---------- Node pill ---------- */

.node-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--color-node);
    color: var(--color-node-text);
    border: 2px solid var(--color-node-border);
    border-radius: 30px;
    padding: 13px 18px 13px 22px;
    min-width: 172px;
    font-family: var(--font-serif);
    font-size: 17px;
    cursor: pointer;
    box-shadow: var(--shadow-node);
    transition: transform .12s ease, box-shadow .12s ease, background .15s ease;
    user-select: none;
    white-space: nowrap;
}

.node-pill:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(43,33,20,0.32);
    background: var(--color-node-dark);
}

.node-pill.is-root {
    background: var(--color-paper);
    color: var(--color-ink);
    border-color: var(--color-accent);
}

.node-pill.is-highlighted {
    background: var(--color-paper);
    color: var(--color-ink);
    border-color: var(--color-accent);
    border-width: 3px;
    box-shadow: 0 0 0 3px rgba(182, 134, 44, 0.18), var(--shadow-node);
}

.node-name {
    flex: 1;
    line-height: 1.2;
}

.node-years {
    display: block;
    font-family: var(--font-sans);
    font-size: 12px;
    opacity: 0.75;
    margin-top: 1px;
}

.expand-toggle {
    background: rgba(255,255,255,0.12);
    border: none;
    color: inherit;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    cursor: pointer;
    flex-shrink: 0;
    transition: transform .18s ease, background .15s ease;
}

.is-root .expand-toggle,
.is-highlighted .expand-toggle {
    background: rgba(59, 47, 34, 0.08);
}

.expand-toggle.is-expanded {
    transform: rotate(90deg);
}

.expand-toggle:hover {
    background: rgba(255,255,255,0.25);
}

.info-btn {
    background: transparent;
    border: 1.5px solid currentColor;
    color: inherit;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-style: italic;
    font-family: var(--font-serif);
    cursor: pointer;
    flex-shrink: 0;
    opacity: 0.85;
    transition: opacity .15s ease, background .15s ease;
}

.info-btn:hover {
    opacity: 1;
    background: rgba(255,255,255,0.15);
}

.is-root .info-btn,
.is-highlighted .info-btn {
    background: transparent;
}

.node-spacer {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

/* ---------- Connector lines ---------- */

.connector-path {
    fill: none;
    stroke: var(--color-line);
    stroke-width: 1.6;
}

/* ---------- Modal (popup) ---------- */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 24, 16, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 24px;
}

.modal-overlay.hidden {
    display: none;
}

.modal-box {
    background: var(--color-paper);
    border-radius: 8px;
    max-width: 640px;
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    padding: 30px 32px 28px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
    border-top: 5px solid var(--color-accent);
    position: relative;
    font-family: var(--font-sans);
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 16px;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--color-ink-soft);
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover { color: var(--color-danger); }

.modal-name {
    font-family: var(--font-serif);
    font-size: 26px;
    color: var(--color-node-dark);
    margin: 0 0 2px;
}

.modal-alt-name {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--color-ink-soft);
    font-size: 15px;
    margin: 0 0 6px;
}

.modal-years {
    color: var(--color-ink-soft);
    font-size: 14px;
    margin-bottom: 18px;
}

.modal-bio {
    font-size: 15px;
    line-height: 1.65;
    color: var(--color-ink);
    white-space: pre-wrap;
    margin-bottom: 22px;
}

.modal-bio.empty {
    font-style: italic;
    color: var(--color-ink-soft);
}

.modal-photos-title {
    font-family: var(--font-serif);
    font-size: 15px;
    color: var(--color-node-dark);
    border-bottom: 1px solid #ddd0ad;
    padding-bottom: 6px;
    margin-bottom: 12px;
}

.modal-photos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
}

.modal-photos-grid img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid #ddd0ad;
    cursor: zoom-in;
    transition: transform .15s ease;
}

.modal-photos-grid img:hover {
    transform: scale(1.03);
}

.modal-photos-empty {
    font-size: 13px;
    color: var(--color-ink-soft);
    font-style: italic;
    padding: 14px;
    text-align: center;
    background: rgba(0,0,0,0.03);
    border-radius: 6px;
    border: 1px dashed #ccb98a;
}

/* Lightbox for enlarged photo */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 8, 5, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
    padding: 30px;
}

.lightbox-overlay.hidden { display: none; }

.lightbox-overlay img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 6px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

/* ---------- Empty state ---------- */

.empty-state {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--color-ink-soft);
    padding: 60px;
    text-align: center;
}

.empty-state a {
    color: var(--color-accent);
}

/* ---------- Zoom controls & pan hint ---------- */

.zoom-controls {
    position: absolute;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 10;
}

.zoom-controls button {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    border: 1px solid var(--color-node-border);
    background: var(--color-paper);
    color: var(--color-node-dark);
    font-family: var(--font-serif);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--shadow-node);
    transition: background .15s ease, transform .1s ease;
}

.zoom-controls button:hover {
    background: #f2e8cd;
}

.zoom-controls button:active {
    transform: translateY(1px);
}

#zoom-fit {
    font-size: 16px;
}

.pan-hint {
    position: absolute;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    background: rgba(59, 47, 34, 0.82);
    color: #f4ede0;
    font-size: 12px;
    padding: 7px 16px;
    border-radius: 20px;
    pointer-events: none;
    z-index: 10;
    opacity: 1;
    transition: opacity .5s ease;
    white-space: nowrap;
}

.pan-hint.hidden {
    opacity: 0;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
    .site-header { padding: 16px 18px; flex-direction: column; align-items: flex-start; gap: 10px; }
    #tree-canvas { padding: 40px 50px; }
    .children-column { margin-left: 46px; gap: 10px; }
    .zoom-controls { right: 12px; bottom: 12px; }
}