:root {
    --bg: #120f0c;
    --bg-soft: #1c1712;
    --card: #241e18;
    --border: rgba(212, 168, 106, 0.28);
    --gold: #d4a86a;
    --gold-soft: rgba(212, 168, 106, 0.15);
    --text: #f6efe6;
    --muted: #b9a995;
    --line: rgba(212, 168, 106, 0.45);
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
    --font: "Segoe UI", system-ui, sans-serif;
    --display: "Palatino Linotype", "Book Antiqua", Palatino, serif;
    --tree-person-w: 8.5rem;
    --tree-couple-gap: 0.75rem;
    --tree-couple-link-w: 7rem;
    --tree-fratrie-col-w: 2.75rem;
    --tree-fork-h: 1.5rem;
    --tree-conn-h: 2.75rem;
    --tree-gen2-link-y: calc(0.75rem + 3.25rem);
    --tree-gen2-row-h: calc(0.75rem + 6.5rem + 0.65rem + 1.15rem);
    --tree-couple-overlap: calc(var(--tree-gen2-row-h) - var(--tree-gen2-link-y) - 1px);
}

*, *::before, *::after { box-sizing: border-box; }

html { height: 100%; }

body {
    margin: 0;
    min-height: 100dvh;
    font-family: var(--font);
    color: var(--text);
    background:
        radial-gradient(circle at 15% 0%, rgba(212, 168, 106, 0.12), transparent 42%),
        radial-gradient(circle at 85% 10%, rgba(139, 90, 43, 0.18), transparent 35%),
        linear-gradient(180deg, #0d0b09 0%, var(--bg) 40%, #0a0908 100%);
    display: flex;
    flex-direction: column;
}

.page {
    width: 100%;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    padding: 1.25rem 1rem 1rem;
    overflow: hidden;
}

.hero {
    text-align: center;
    margin-bottom: 1rem;
    flex-shrink: 0;
}

.hero h1 {
    margin: 0;
    font-family: var(--display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.tree-toolbar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    flex-shrink: 0;
}

.tree-zoom {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(36, 30, 24, 0.85);
}

.tree-zoom__btn {
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0 0.65rem;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--text);
    font: inherit;
    font-size: 1.05rem;
    cursor: pointer;
}

.tree-zoom__btn:hover { background: var(--gold-soft); }

.tree-zoom__btn--label {
    min-width: 4.5rem;
    font-size: 0.82rem;
    color: var(--muted);
}

.tree-viewport {
    --tree-canvas-w: auto;
    --tree-canvas-h: auto;
    flex: 1 1 auto;
    overflow: scroll;
    width: 100%;
    min-height: 280px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.18);
    touch-action: pan-x pan-y;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.tree-canvas {
    width: var(--tree-canvas-w);
    height: var(--tree-canvas-h);
    min-width: max-content;
    min-height: max-content;
    flex-shrink: 0;
    display: block;
    padding: 1.25rem;
    box-sizing: border-box;
}

.tree {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: max-content;
    transform-origin: top left;
    will-change: transform;
}

/* ── Leno (au-dessus des 3 enfants) ── */
.tree-leno {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: calc(var(--tree-person-w) * 3 + var(--tree-couple-gap) * 2);
}

.tree-line {
    background: var(--gold);
}

.tree-line--v { width: 2px; }
.tree-line--h { height: 2px; }

.tree-line--leno-stem {
    height: var(--tree-fork-h);
}

/* ── Grille principale (7 colonnes) ── */
.tree-sheet {
    display: grid;
    grid-template-columns:
        repeat(3, var(--tree-person-w))
        var(--tree-couple-link-w)
        var(--tree-person-w)
        var(--tree-fratrie-col-w)
        var(--tree-person-w);
    column-gap: var(--tree-couple-gap);
    grid-template-rows:
        var(--tree-fork-h)
        auto
        var(--tree-conn-h)
        auto;
    width: max-content;
}

/* Fourche Leno (ligne 1) */
.tree-line--fork-bar {
    grid-column: 1 / 4;
    grid-row: 1;
    align-self: start;
    margin-inline: calc(var(--tree-person-w) / 2);
}

.tree-line--fork-francky { grid-column: 1; }
.tree-line--fork-hachi   { grid-column: 2; }
.tree-line--fork-warza   { grid-column: 3; }

.tree-line--fork-drop {
    grid-row: 1 / 3;
    justify-self: center;
    align-self: start;
    height: calc(var(--tree-fork-h) + 0.75rem);
    max-height: calc(var(--tree-fork-h) + 0.75rem);
}

.tree-cell--francky { grid-column: 1; grid-row: 2; }
.tree-cell--hachi   { grid-column: 2; grid-row: 2; }
.tree-cell--warza   { grid-column: 3; grid-row: 2; }
.tree-cell--couple  { grid-column: 4; grid-row: 2; }
.tree-cell--dameso  { grid-column: 5; grid-row: 2; }
.tree-cell--bridge-fratrie-dp { grid-column: 6; grid-row: 2; }
.tree-cell--padmika { grid-column: 7; grid-row: 2; }

/* Connecteurs descendance (ligne 3) */
.tree-gen3-connectors {
    grid-column: 3 / 6;
    grid-row: 3;
    position: relative;
}

.tree-line--from-warza {
    position: absolute;
    top: 0;
    left: calc(var(--tree-person-w) / 2);
    height: calc(100% - 1.35rem);
    transform: translateX(-50%);
}

.tree-line--hixxy-path {
    position: absolute;
    left: calc(var(--tree-person-w) + var(--tree-couple-gap) + var(--tree-couple-link-w) / 2);
    top: calc(-1 * var(--tree-couple-overlap));
    height: calc(100% + var(--tree-couple-overlap));
    transform: translateX(-50%);
}

.tree-line--arrow::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translate(-50%, 50%) rotate(45deg);
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--gold);
    border-bottom: 2px solid var(--gold);
}

.tree-line--to-child {
    position: absolute;
    bottom: 0;
    height: 1.35rem;
    transform: translateX(-50%);
}

.tree-line--to-child::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translate(-50%, 50%) rotate(45deg);
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--gold);
    border-bottom: 2px solid var(--gold);
}

.tree-line--to-alpha {
    left: calc(var(--tree-person-w) / 2);
}

/* Enfants Warza (ligne 4) */
.tree-cell--alpha {
    grid-column: 3;
    grid-row: 4;
    justify-self: center;
}

.tree-cell--hixxy {
    grid-column: 4;
    grid-row: 4;
    justify-self: center;
}

/* Cellules communes */
.tree-cell--person {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 0.75rem;
    position: relative;
    z-index: 1;
}

.tree-cell--bridge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-top: calc(0.75rem + 3.25rem);
}

.tree-cell--couple {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: calc(0.75rem + 3.25rem);
}

.tree-cell--bridge-label {
    gap: 0.35rem;
}

.couple__link {
    width: 100%;
    height: 2px;
    background: var(--gold);
    flex-shrink: 0;
}

.tree-bridge__line {
    width: 100%;
    height: 2px;
    background: var(--line);
}

.tree-bridge__label {
    font-size: 0.72rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.person {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.65rem;
    width: var(--tree-person-w);
    text-align: center;
}

.person__frame {
    position: relative;
    width: 6.5rem;
    height: 6.5rem;
    border-radius: 50%;
    padding: 3px;
    background: linear-gradient(145deg, var(--gold), #8b5a2b 55%, #d4a86a);
    box-shadow: var(--shadow);
}

.person__frame::after {
    content: "";
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid rgba(212, 168, 106, 0.18);
}

.person__avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    background: var(--card);
    border: 2px solid var(--bg-soft);
}

.person__name {
    font-family: var(--display);
    font-size: 1.15rem;
    font-weight: 600;
}

.person__tag {
    font-size: 0.72rem;
    color: var(--gold);
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.2);
}