/* ============================================================
   tree.css — لوحة الشجرة، بطاقات الأشخاص، الروابط
   The pan/zoom canvas, person cards, connector links, panels.
   ============================================================ */

/* ---------- 1. Canvas ---------- */
.canvas {
  position: relative;
  flex: 1;
  overflow: hidden;
  touch-action: none;            /* نتحكم بالسحب والتكبير يدوياً */
  cursor: grab;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 1px 1px, var(--bg-grid) 1.4px, transparent 0);
  background-size: 26px 26px;
  contain: layout paint;
}
.canvas--grabbing { cursor: grabbing; }
.canvas:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

/* اللوحة نفسها LTR ومثبّتة على الزاوية العليا اليسرى
   حتى تبقى الإحداثيات (x, y) صحيحة مهما كان اتجاه الصفحة. */
.viewport {
  position: absolute;
  top: 0;
  left: 0;
  direction: ltr;
  transform-origin: 0 0;
  will-change: transform;
}

.links {
  position: absolute;
  inset-block-start: 0;
  left: 0;
  overflow: visible;
  pointer-events: none;
}
.link {
  fill: none;
  stroke: var(--g, var(--border-strong));
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .55;
  transition: opacity .2s, stroke-width .2s;
}
.link--active { opacity: 1; stroke-width: 3; }
.link--dim { opacity: .12; }

.nodes { position: absolute; inset-block-start: 0; left: 0; }

/* ---------- 2. Person card ---------- */
.node {
  position: absolute;
  inset-block-start: 0;
  left: 0;
  width: var(--node-w, 136px);
  direction: rtl;
  will-change: transform;
}

.node__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 8px 12px;
  border: 1px solid var(--border);
  border-block-start: 3px solid var(--g);
  border-radius: var(--r-lg);
  background: color-mix(in oklab, var(--g) 7%, var(--surface));
  box-shadow: var(--shadow-sm);
  font: inherit;
  color: inherit;
  text-align: center;
  cursor: pointer;
  transition: box-shadow .18s, border-color .18s, transform .12s, opacity .2s;
}
.node__card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--g);
  transform: translateY(-2px);
}

.node--selected .node__card {
  border-color: var(--g);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--g) 45%, transparent), var(--shadow-md);
}
.node--match .node__card {
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 60%, transparent), var(--shadow-md);
}
.node--dim { opacity: .3; }

/* الصورة / photo */
.node__photo {
  position: relative;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--surface-sunk);
  box-shadow: 0 0 0 3px var(--g), 0 0 0 5px color-mix(in oklab, var(--g) 22%, transparent);
  flex: none;
}
.node__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* بديل الصورة: أول حرف من الاسم / initial fallback */
.node__initial {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-family: var(--font-head);
  font-size: 1.9rem;
  font-weight: 700;
  color: color-mix(in oklab, var(--g) 72%, var(--text));
  background: color-mix(in oklab, var(--g) 16%, var(--surface-sunk));
  user-select: none;
}

/* الاسم تحت الصورة / name under the photo */
.node__name {
  font-family: var(--font-head);
  font-size: .8rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.node__meta {
  font-size: .68rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  direction: ltr;
}

.node__gen {
  position: absolute;
  inset-block-start: 6px;
  inset-inline-start: 8px;
  font-size: .62rem;
  font-weight: 700;
  color: var(--g);
  opacity: .8;
  font-variant-numeric: tabular-nums;
}

/* زر طيّ/فتح الأبناء / collapse toggle */
.node__toggle {
  position: absolute;
  inset-block-end: -13px;
  inset-inline-start: 50%;
  transform: translateX(50%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 7px;
  border: 2px solid var(--g);
  border-radius: 999px;
  background: var(--surface);
  color: var(--g);
  font-family: var(--font-body);
  font-size: .72rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  z-index: 2;
  transition: background .15s, color .15s;
  font-variant-numeric: tabular-nums;
}
.node__toggle:hover { background: var(--g); color: var(--surface); }
.node__toggle--open { background: var(--g); color: var(--surface); }
.node__toggle--open:hover { opacity: .82; }

/* زر إضافة ابن (لوحة الإدارة) / add-son button, admin only.
   ظاهر دائماً — الإخفاء حتى المرور بالفأرة يجعل الإضافة صعبة الاكتشاف.
   Always visible: hiding it until hover made adding names undiscoverable. */
.node__add {
  position: absolute;
  inset-block-start: -10px;
  inset-inline-end: -10px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border: 2px solid var(--surface);
  border-radius: 50%;
  background: var(--success);
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform .14s, filter .14s;
  z-index: 4;
}
.node__add:hover { transform: scale(1.15); filter: brightness(1.08); }
.node__add:active { transform: scale(.96); }

/* وضع الرؤية البعيدة: عند التصغير الشديد نرسم خرزات ملوّنة فقط
   Low-detail mode: at far zoom we draw coloured beads instead of
   full cards, so a tree with thousands of people stays smooth. */
.node--far { pointer-events: none; }
.node__bead {
  width: 84px;
  height: 84px;
  margin: 10px auto 0;
  border-radius: 50%;
  background: var(--g);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--g) 25%, transparent);
}
.node--far.node--selected .node__bead { box-shadow: 0 0 0 10px color-mix(in oklab, var(--g) 45%, transparent); }
.node--far.node--match .node__bead { box-shadow: 0 0 0 10px color-mix(in oklab, var(--accent) 70%, transparent); }

/* ---------- 3. Floating toolbar ---------- */
.toolbar {
  position: absolute;
  inset-block-end: 16px;
  inset-inline-start: 50%;
  transform: translateX(50%);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 30;
}
:dir(ltr) .toolbar { transform: translateX(-50%); }

.toolbar .btn--icon {
  width: 36px;
  min-height: 36px;
  border: none;
  border-radius: 50%;
  background: transparent;
}
.toolbar .btn--icon:hover:not(:disabled) { background: var(--surface-sunk); }

.toolbar__sep {
  width: 1px;
  height: 22px;
  background: var(--border);
  margin: 0 3px;
}

.toolbar__zoom {
  min-width: 46px;
  text-align: center;
  font-size: .74rem;
  font-weight: 700;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- 4. Generation legend ---------- */
.legend {
  position: absolute;
  inset-block-start: 12px;
  inset-inline-start: 12px;
  max-width: 190px;
  padding: 8px 10px;
  border-radius: var(--r-md);
  background: color-mix(in oklab, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  z-index: 25;
  font-size: .74rem;
}
.legend__head {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font-head);
  font-size: .76rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
}
.legend__caret { margin-inline-start: auto; color: var(--text-faint); transition: transform .2s; }
.legend[data-open="false"] .legend__caret { transform: rotate(-90deg); }
.legend[data-open="false"] .legend__list { display: none; }

.legend__list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  max-height: 42vh;
  overflow-y: auto;
}
.legend__item {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
}
.legend__swatch {
  width: 12px; height: 12px;
  border-radius: 3px;
  background: var(--g);
  flex: none;
}
.legend__count { margin-inline-start: auto; font-variant-numeric: tabular-nums; color: var(--text-faint); }

/* ---------- 5. Search ---------- */
.search { position: relative; flex: none; }

.search__input {
  width: 190px;
  padding-block: 7px;
  padding-inline: 12px 32px;   /* مساحة لأيقونة البحث في نهاية الحقل */
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface-2);
  font-size: .85rem;
  transition: width .2s, border-color .15s, box-shadow .15s;
}
.search__input:focus {
  outline: none;
  width: 240px;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 20%, transparent);
}
.search__icon {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 11px;
  transform: translateY(-50%);
  color: var(--text-faint);
  font-size: .85rem;
  pointer-events: none;
}

.search__results {
  position: absolute;
  inset-block-start: calc(100% + 6px);
  inset-inline-start: 0;
  width: min(300px, 78vw);
  max-height: 320px;
  overflow-y: auto;
  margin: 0;
  padding: 5px;
  list-style: none;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
  z-index: 60;
}
.search__results:empty { display: none; }

.search__result {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 7px 9px;
  border: none;
  border-radius: var(--r-sm);
  background: none;
  text-align: start;
  cursor: pointer;
}
.search__result:hover, .search__result[aria-selected="true"] { background: var(--surface-sunk); }

.search__avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--surface-sunk);
  box-shadow: 0 0 0 2px var(--g);
  flex: none;
}
.search__avatar--initial {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  color: var(--g);
}
/* الاسم فوق ونسبه تحته — لا بدّ من عمود، فالعنصران span بطبيعتهما سطريان
   فيتدفّقان كنصّ واحد ولا يعمل القصّ بالنقاط عليهما.
   Name above, lineage below: both are spans, so without a column they run
   together as one line and their ellipsis rules never apply. */
.search__text { min-width: 0; display: flex; flex-direction: column; }
.search__name { font-size: .84rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search__lineage { font-size: .7rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search__empty { padding: 12px; text-align: center; color: var(--text-muted); font-size: .82rem; }

/* ---------- 6. Detail / edit panel ---------- */
.panel {
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  width: min(360px, 92vw);
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-inline-start: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 120;   /* فوق الحجاب (veil = 100) حتى تعمل اللوحة والشجرة فارغة / above the veil so the editor works on an empty tree */
  transform: translateX(-100%);
  transition: transform .26s cubic-bezier(.32, .72, 0, 1);
}
:dir(ltr) .panel { transform: translateX(100%); }
.panel[data-open="true"] { transform: none; }
.panel[hidden] { display: none; }

.panel__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-block-end: 1px solid var(--border);
  flex: none;
}
.panel__title { font-size: .95rem; font-weight: 700; margin-inline-end: auto; }

.panel__body { flex: 1; overflow-y: auto; padding: 16px 14px; }
.panel__foot {
  display: flex;
  gap: 8px;
  padding: 12px 14px;
  border-block-start: 1px solid var(--border);
  background: var(--surface-2);
  flex: none;
}
.panel__foot .btn { flex: 1; }

/* رأس البطاقة داخل اللوحة / person hero */
.hero { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; }
.hero__photo {
  width: 128px; height: 128px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--surface-sunk);
  box-shadow: 0 0 0 4px var(--g), 0 0 0 7px color-mix(in oklab, var(--g) 20%, transparent);
}
.hero__photo--initial {
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head);
  font-size: 3rem; font-weight: 700;
  color: color-mix(in oklab, var(--g) 72%, var(--text));
  background: color-mix(in oklab, var(--g) 16%, var(--surface-sunk));
}
.hero__name { font-family: var(--font-head); font-size: 1.2rem; font-weight: 700; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.hero__badge { border-color: color-mix(in oklab, var(--g) 40%, var(--border)); color: var(--g); background: color-mix(in oklab, var(--g) 10%, var(--surface)); }

.detail-block { margin-block-start: 20px; }
.detail-block__label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text-faint);
  margin-block-end: 6px;
}
.detail-block__value { font-size: .9rem; line-height: 1.75; white-space: pre-wrap; }

/* سلسلة النسب / lineage chain */
.lineage { display: flex; flex-wrap: wrap; gap: 4px 5px; font-size: .88rem; line-height: 1.9; }
.lineage__link {
  border: none;
  background: none;
  padding: 0;
  font: inherit;
  font-weight: 600;
  color: var(--gc, var(--text));
  cursor: pointer;
  border-block-end: 1px dotted currentColor;
}
.lineage__link:hover { opacity: .75; }
.lineage__sep { color: var(--text-faint); }

/* قائمة الأبناء / sons list */
.sons { display: flex; flex-direction: column; gap: 4px; margin: 0; padding: 0; list-style: none; }
.sons__item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 6px 8px;
  border: none;
  border-radius: var(--r-sm);
  background: none;
  text-align: start;
  cursor: pointer;
  font-size: .86rem;
}
.sons__item:hover { background: var(--surface-sunk); }
.sons__avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--surface-sunk);
  box-shadow: 0 0 0 2px var(--g);
  flex: none;
  display: flex; align-items: center; justify-content: center;
  font-size: .76rem; font-weight: 700; color: var(--g);
}
.sons__name { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sons__count { font-size: .72rem; color: var(--text-faint); }

/* ---------- 7. Loading veil ---------- */
.veil {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  backdrop-filter: blur(2px);
  z-index: 100;
  color: var(--text-muted);
  font-size: .88rem;
}
.veil[hidden] { display: none; }

/* ---------- 8. Phones ---------- */
@media (max-width: 720px) {
  .topbar { padding: 8px 12px; gap: 8px; }
  .topbar__title { font-size: .95rem; }
  .topbar__subtitle { display: none; }

  .search__input { width: 130px; }
  .search__input:focus { width: 168px; }

  /* قائمة النتائج مربوطة بحقل بحث ضيّق ومتوسّط، فعرضها الثابت (٣٠٠ بكسل)
     كان يخرج من حافة الشاشة وتُقصّ الأسماء. على الجوال نثبّتها بالنافذة
     نفسها تحت الشريط، بهامش على الجانبين.
     Anchored to a narrow centred input, the fixed 300px menu ran off the
     screen edge and clipped names. On phones pin it to the viewport
     instead, just under the top bar. */
  .search__results {
    position: fixed;
    inset-block-start: 52px;   /* الشريط ٥٥ بكسل والحقل ينتهي عند ٤٦ */
    inset-inline: 10px;
    width: auto;
    max-height: 62dvh;
  }

  /* اللوحة تصبح ورقة سفلية على الجوال / panel becomes a bottom sheet */
  .panel {
    inset-block: auto 0;
    inset-inline: 0;
    width: 100%;
    max-height: 82dvh;
    border-inline-start: none;
    border-block-start: 1px solid var(--border);
    border-start-start-radius: var(--r-xl);
    border-start-end-radius: var(--r-xl);
    transform: translateY(100%);
  }
  :dir(ltr) .panel { transform: translateY(100%); }
  .panel[data-open="true"] { transform: none; }

  .panel::before {
    content: "";
    position: absolute;
    inset-block-start: 7px;
    inset-inline-start: 50%;
    transform: translateX(50%);
    width: 38px; height: 4px;
    border-radius: 999px;
    background: var(--border-strong);
  }
  .panel__head { padding-block-start: 18px; }

  .legend { max-width: 150px; inset-block-start: 8px; inset-inline-start: 8px; font-size: .7rem; }
  .toolbar { inset-block-end: 12px; }
}