/* =========================================================
   مركز المختبرات الفضائية — نظام التصميم
   Space Mission Control: كحلي، سماوي، كهرماني، عربي أولًا
   ========================================================= */

:root {
  --accent: #38bdf8;
  --accent-soft: color-mix(in srgb, var(--accent) 16%, transparent);
  --bg: #071426;
  --bg-2: #0a1b30;
  --panel: #0d2037;
  --panel-2: #142944;
  --line: #1c3856;
  --line-2: #2b5375;
  --txt: #eff8ff;
  --txt-2: #c7dcea;
  --muted: #8eabc2;
  --ok: #5de0c1;
  --warn: #ffb454;
  --info: #76d8ff;
  --danger: #ef4444;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 12px 34px rgba(0, 0, 0, .38);
  --font: 'Readex Pro', system-ui, 'Segoe UI', Tahoma, sans-serif;
  --sidebar-w: 232px;
  --topbar-h: 62px;
  --t: 200ms cubic-bezier(.2, .7, .3, 1);
}

html[data-theme='light'] {
  --bg: #f1f6fb;
  --bg-2: #e3edf6;
  --panel: #ffffff;
  --panel-2: #f5f9fd;
  --line: #d0dfea;
  --line-2: #b8cddd;
  --txt: #0c2134;
  --txt-2: #294b66;
  --muted: #59758d;
  --shadow: 0 10px 26px rgba(16, 24, 40, .10);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1100px 620px at 88% -8%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 62%),
    radial-gradient(900px 520px at 4% 102%, rgba(56, 189, 248, .12), transparent 60%),
    var(--bg);
  color: var(--txt);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body.is-classroom { font-size: 17.5px; }

img { max-width: 100%; display: block; }
a { color: var(--txt); text-decoration: none; }
a:hover { color: var(--accent); }
h1, h2, h3 { line-height: 1.35; margin: 0 0 .4rem; }
h1 { font-size: 1.9rem; font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: 1.28rem; font-weight: 600; }
h3 { font-size: 1.05rem; font-weight: 600; }
p { margin: 0 0 .6rem; }
ul, ol { margin: 0 0 .6rem; padding-inline-start: 1.2rem; }
code, pre, .url, [dir='ltr'] { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; inset-inline-start: -999px; top: 8px; background: var(--panel); padding: .5rem .8rem; border-radius: 8px; z-index: 100; }
.skip:focus { inset-inline-start: 8px; }

/* ---------- الشريط العلوي ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: .8rem;
  padding: 0 1rem;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: .6rem; min-width: 0; }
.brand__mark { width: 38px; height: 38px; color: var(--accent); flex: none; }
.brand__mark svg { width: 100%; height: 100%; }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.brand__text strong { font-size: 1rem; font-weight: 700; }
.brand__text small { font-size: .72rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 34vw; }

.search { flex: 1; max-width: 520px; margin-inline-start: auto; }
.search input {
  width: 100%; height: 38px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--panel);
  color: var(--txt); padding: 0 1rem; font-family: inherit; font-size: .9rem;
}
.search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.topbar__actions { display: flex; gap: .35rem; }

/* ---------- الأزرار ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  border: 1px solid var(--line-2); background: var(--panel-2); color: var(--txt);
  padding: .52rem .95rem; border-radius: 10px; cursor: pointer;
  font-family: inherit; font-size: .9rem; font-weight: 500;
  transition: transform var(--t), background var(--t), border-color var(--t), box-shadow var(--t);
}
.btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #061426; font-weight: 700; }
.btn--primary:hover { box-shadow: 0 8px 22px color-mix(in srgb, var(--accent) 34%, transparent); }
.btn--ghost { background: transparent; }
.btn--danger { background: color-mix(in srgb, var(--danger) 16%, transparent); border-color: var(--danger); color: #fff; }
.btn--sm { padding: .38rem .7rem; font-size: .84rem; border-radius: 9px; }
.btn--large { padding: .7rem 1.2rem; font-size: .98rem; }
.btn.is-on { border-color: var(--accent); background: var(--accent-soft); }
.btn.is-disabled, .btn[disabled] { opacity: .45; pointer-events: none; }

.icon-btn {
  width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; border: 1px solid transparent; background: transparent; color: var(--txt-2);
  cursor: pointer; font-size: 1rem; transition: background var(--t), color var(--t), border-color var(--t);
}
.icon-btn:hover { background: var(--panel-2); border-color: var(--line); color: var(--txt); }
.icon-btn.is-on { color: var(--accent); }
.icon-btn--danger:hover { color: var(--danger); border-color: var(--danger); }
.icon-btn .ico { width: 20px; height: 20px; }
.only-mobile { display: none; }

/* ---------- التخطيط ---------- */
.layout { display: flex; min-height: calc(100vh - var(--topbar-h)); }
.sidebar {
  width: var(--sidebar-w); flex: none; padding: 1rem .7rem;
  border-inline-start: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 45%, transparent);
  display: flex; flex-direction: column; gap: 1rem;
  position: sticky; top: var(--topbar-h); height: calc(100vh - var(--topbar-h));
}
.sidebar nav { display: flex; flex-direction: column; gap: .2rem; }
.navlink {
  display: flex; align-items: center; gap: .65rem; padding: .55rem .7rem;
  border-radius: 10px; color: var(--txt-2); font-weight: 500; font-size: .92rem;
  border: 1px solid transparent; transition: background var(--t), color var(--t);
}
.navlink .ico { width: 20px; height: 20px; flex: none; opacity: .85; }
.navlink:hover { background: var(--panel-2); color: var(--txt); }
.navlink.is-active { background: var(--accent-soft); color: var(--txt); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.sidebar__foot { margin-top: auto; border-top: 1px solid var(--line); padding-top: .7rem; }
.view { flex: 1; min-width: 0; }
.wrap { max-width: 1180px; margin: 0 auto; }
.pad { padding: 1.4rem 1.2rem 4rem; }

.tabbar { display: none; }

/* ---------- البطاقات ---------- */
.card {
  background: linear-gradient(180deg, var(--panel) 0%, color-mix(in srgb, var(--panel) 88%, var(--bg)) 100%);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.panel { padding: 1.1rem 1.15rem; }
.panel__title { font-size: 1.05rem; margin-bottom: .7rem; }

.hero { display: flex; gap: 1.4rem; align-items: center; padding: 1.5rem; margin-bottom: 1.1rem; }
.hero__text { flex: 1; }
.hero h1 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.eyebrow { color: var(--accent); font-size: .82rem; font-weight: 600; letter-spacing: .02em; margin-bottom: .2rem; }
.lead { color: var(--txt-2); max-width: 62ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .9rem; }
.hero__ring { text-align: center; flex: none; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: .7rem; margin-bottom: 1.1rem; }
.stat { padding: .85rem 1rem; display: flex; flex-direction: column; }
.stat__num { font-size: 1.6rem; font-weight: 700; color: var(--accent); line-height: 1.2; }
.stat__lbl { font-size: .8rem; color: var(--muted); }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: .9rem; margin-bottom: 1.1rem; }

.section { margin: 1.5rem 0; }
.section__head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .8rem; }
.section__head h2 { margin: 0; }

/* ---------- حلقة التقدّم ---------- */
.ring { position: relative; width: 96px; height: 96px; margin: 0 auto; }
.ring svg { width: 100%; height: 100%; }
.ring__bg { fill: none; stroke: var(--line-2); stroke-width: 6; }
.ring__fg { fill: none; stroke: var(--accent); stroke-width: 6; stroke-linecap: round; transition: stroke-dashoffset 700ms ease-out; }
.ring__val { position: absolute; inset: 0; display: grid; place-items: center; font-weight: 700; font-size: 1.05rem; }

/* ---------- الشرائح والوسوم ---------- */
.badge {
  display: inline-flex; align-items: center; gap: .25rem;
  font-size: .74rem; font-weight: 500; padding: .16rem .55rem; border-radius: 999px;
  border: 1px solid var(--line-2); background: color-mix(in srgb, var(--panel-2) 80%, transparent); color: var(--txt-2);
  white-space: nowrap;
}
.badge--accent { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.badge--ok { border-color: color-mix(in srgb, var(--ok) 60%, transparent); color: var(--ok); }
.badge--info { border-color: color-mix(in srgb, var(--info) 55%, transparent); color: var(--info); }
.badge--warn { border-color: color-mix(in srgb, var(--warn) 60%, transparent); color: var(--warn); }
.badge--muted { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .5rem; }
.chips--tags { gap: .3rem; }
.tag {
  font-size: .74rem; color: var(--muted); background: transparent; border: 1px dashed var(--line-2);
  border-radius: 999px; padding: .12rem .5rem; cursor: pointer; font-family: inherit;
}
.tag:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- بطاقات المختبرات ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 1rem; }
.cards--list { grid-template-columns: 1fr; }
.cards.is-manual [data-lab-card] { cursor: grab; }
.cards.is-manual [data-lab-card].is-dragging { opacity: .5; }

.lab-card { display: flex; flex-direction: column; overflow: hidden; animation: rise 340ms cubic-bezier(.2,.7,.3,1) both; }
.lab-card.is-done { border-color: color-mix(in srgb, var(--ok) 45%, var(--line)); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.card__media { position: relative; aspect-ratio: 16 / 9; background: var(--panel-2); }
.card__img { width: 100%; height: 100%; object-fit: cover; }
.card__img--fallback { display: grid; place-items: center; font-size: 2rem; color: var(--muted); }
.card__badges { position: absolute; top: .5rem; inset-inline-start: .5rem; display: flex; gap: .3rem; flex-wrap: wrap; }
.card__fav {
  position: absolute; top: .45rem; inset-inline-end: .45rem;
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line-2);
  background: color-mix(in srgb, var(--bg) 70%, transparent); color: var(--muted); cursor: pointer; font-size: 1rem;
}
.card__fav.is-on { color: var(--warn); border-color: var(--warn); }
.card__body { padding: .9rem 1rem .4rem; flex: 1; }
.card__title { font-size: 1.06rem; margin-bottom: .35rem; }
.card__desc { color: var(--txt-2); font-size: .88rem; margin-bottom: .2rem; }
.card__actions { display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; padding: .7rem 1rem 1rem; }
.card__actions .opens { margin-inline-start: auto; }
.devices-note { margin: .5rem 0 0; }

.cards--list .lab-card { flex-direction: row; }
.cards--list .card__media { width: 220px; flex: none; aspect-ratio: auto; }
.cards--list .card__body { padding: 1rem; }

/* بطاقة المختبر المميّز في الرئيسية: صورة جانبية على الشاشات الكبيرة */
.lab-card--feature { display: grid; grid-template-columns: 330px 1fr; max-width: 860px; }
.lab-card--feature .card__media { grid-column: 1; grid-row: 1 / span 2; aspect-ratio: auto; height: 100%; min-height: 230px; }
.lab-card--feature .card__body { grid-column: 2; padding: 1.15rem 1.25rem .3rem; }
.lab-card--feature .card__actions { grid-column: 2; padding: .2rem 1.25rem 1.1rem; }
@media (max-width: 760px) {
  .lab-card--feature { display: flex; flex-direction: column; }
  .lab-card--feature .card__media { width: 100%; aspect-ratio: 16 / 9; min-height: 0; }
}

/* ---------- شريط الأدوات ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .9rem; }
.field { display: flex; flex-direction: column; gap: .25rem; }
.field--grow { flex: 1 1 220px; }
.field label { font-size: .8rem; color: var(--muted); }
input, select, textarea {
  font-family: inherit; font-size: .9rem; color: var(--txt);
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: .5rem .7rem;
}
textarea { resize: vertical; line-height: 1.6; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.toolbar .field { min-width: 140px; }
.viewtoggle { display: flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.viewtoggle button { border: 0; background: transparent; color: var(--muted); padding: .45rem .7rem; cursor: pointer; }
.viewtoggle button.is-on { background: var(--accent-soft); color: var(--accent); }

.results-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .6rem; }

/* ---------- المراجع ---------- */
.refs { display: grid; gap: .6rem; }
.ref-row { padding: .9rem 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.ref-row__head { display: flex; gap: .35rem; flex-wrap: wrap; margin-bottom: .3rem; }
.ref-row__title { font-size: 1rem; margin-bottom: .1rem; }
.ref-row__desc { color: var(--txt-2); font-size: .87rem; margin: 0; }

/* ---------- الإشعارات والفراغ ---------- */
.notice { padding: 1.1rem 1.2rem; border-radius: var(--radius); }
.notice--warn { border: 1px solid color-mix(in srgb, var(--warn) 55%, var(--line)); background: color-mix(in srgb, var(--warn) 9%, var(--panel)); }
.notice--info { border: 1px solid color-mix(in srgb, var(--info) 50%, var(--line)); }
.empty { padding: 2rem; text-align: center; }
.empty h3 { margin-bottom: .3rem; }

.muted { color: var(--muted); }
.tiny { font-size: .78rem; }
.warn-note { color: var(--warn); font-size: .85rem; }
.row { display: flex; align-items: center; }
.gap { gap: .5rem; }
.wrap-row { flex-wrap: wrap; }
.levelbars { list-style: none; padding: 0; margin: 0; display: grid; gap: .45rem; }
.levelbars li { display: grid; grid-template-columns: 70px 1fr 34px; align-items: center; gap: .6rem; font-size: .85rem; }
.bar { height: 8px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 50%, var(--info))); }
.history { list-style: none; padding: 0; display: grid; gap: .35rem; }
.history li { display: flex; justify-content: space-between; gap: .6rem; font-size: .88rem; }
.source-note { margin-top: 1.6rem; }

/* ---------- العارض ---------- */
body.is-viewer .sidebar, body.is-viewer .tabbar { display: none; }
.viewer { display: flex; flex-direction: column; height: calc(100vh - var(--topbar-h)); }
.viewer__bar {
  display: flex; align-items: center; gap: .6rem; padding: .5rem .8rem;
  border-bottom: 1px solid var(--line); background: var(--panel); flex: none;
}
.viewer__title { display: flex; flex-direction: column; gap: .15rem; min-width: 0; flex: 1; }
.viewer__title strong { font-size: .98rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.viewer__tools { display: flex; gap: .25rem; flex-wrap: wrap; }
.viewer__body { flex: 1; display: flex; min-height: 0; }
.viewer__stage { flex: 1; position: relative; background: #05070d; min-width: 0; }
.viewer__stage.is-narrow { flex: 0 0 68%; }
.viewer__stage iframe { width: 100%; height: 100%; border: 0; display: block; }
.loading {
  position: absolute; inset: 0; display: grid; place-content: center; gap: .6rem; text-align: center;
  background: var(--bg); z-index: 2; color: var(--muted); transition: opacity var(--t);
}
.loading.is-hidden { opacity: 0; pointer-events: none; }
.loading__dot { width: 34px; height: 34px; margin: 0 auto; border-radius: 50%; border: 3px solid var(--line-2); border-top-color: var(--accent); animation: spin 900ms linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.viewer__panel {
  width: 340px; flex: none; border-inline-start: 1px solid var(--line); background: var(--panel);
  overflow-y: auto; padding: 1rem; display: none; gap: .9rem;
}
.viewer__panel.is-open { display: block; }
.panel__block { margin-bottom: 1.1rem; }
.panel__block h3 { font-size: .95rem; color: var(--accent); margin-bottom: .4rem; }
.panel__block textarea { width: 100%; }
.steps li, .questions li { font-size: .87rem; color: var(--txt-2); margin-bottom: .3rem; }
.stars { display: flex; gap: .2rem; }
.stars button { background: none; border: 0; font-size: 1.4rem; color: var(--line-2); cursor: pointer; }
.stars button.is-on { color: var(--warn); }
.external { display: grid; place-items: center; height: 100%; padding: 1.5rem; }
.external__box { max-width: 520px; text-align: center; }

/* ---------- النوافذ والرسائل ---------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 80; background: rgba(3, 6, 14, .68);
  display: grid; place-items: center; padding: 1rem; backdrop-filter: blur(3px);
}
.modal { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); width: min(560px, 100%); max-height: 90vh; overflow: auto; box-shadow: var(--shadow); }
.modal--wide { width: min(760px, 100%); }
.modal__head { display: flex; align-items: center; justify-content: space-between; padding: .9rem 1.1rem; border-bottom: 1px solid var(--line); }
.modal__head h3 { margin: 0; }
.modal__body { padding: 1.1rem; }
.modal__text { margin: 0 0 1rem; }
.modal__actions { display: flex; gap: .5rem; justify-content: flex-end; padding: 0 1.1rem 1.1rem; }
.qr { text-align: center; }
.qr img { margin: .6rem auto; background: #fff; padding: .5rem; border-radius: 10px; }

.toasts { position: fixed; inset-block-end: 1rem; inset-inline-start: 1rem; z-index: 90; display: grid; gap: .4rem; }
.toast {
  background: var(--panel); border: 1px solid var(--line); border-inline-start: 3px solid var(--accent);
  padding: .55rem .9rem; border-radius: 10px; font-size: .87rem; box-shadow: var(--shadow);
  opacity: 0; transform: translateY(8px); transition: all 240ms ease-out;
}
.toast.is-in { opacity: 1; transform: none; }
.toast--ok { border-inline-start-color: var(--ok); }
.toast--warn { border-inline-start-color: var(--warn); }

/* ---------- النماذج ---------- */
.form .field { margin-bottom: .7rem; }
.form .grid-2 { margin-bottom: 0; }
.form-actions { display: flex; gap: .5rem; margin-top: 1rem; }
.form__error { color: var(--danger); font-size: .85rem; min-height: 1.2em; margin: 0; }
.checks { display: grid; gap: .35rem; margin-top: .4rem; }
.check { display: flex; align-items: flex-start; gap: .5rem; font-size: .9rem; }
.check input { margin-top: .35rem; }
.inline-field { display: flex; flex-direction: column; gap: .2rem; font-size: .8rem; color: var(--muted); }
.inline-field.field--grow { flex: 1; }
.code { background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; padding: .7rem; font-size: .76rem; overflow-x: auto; white-space: pre-wrap; word-break: break-word; }

/* ---------- القوائم ---------- */
.rowlist { list-style: none; padding: 0; display: grid; gap: .4rem; }
.rowitem { display: flex; align-items: center; justify-content: space-between; gap: .6rem; padding: .6rem .8rem; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.rowitem__actions { display: flex; gap: .2rem; }
.notelist { list-style: none; padding: 0; display: grid; gap: .6rem; }
.notecard { padding: .9rem 1rem; }
.notecard p { color: var(--txt-2); white-space: pre-wrap; }
.planlist { list-style: none; padding: 0; display: grid; gap: .6rem; }
.plancard { display: flex; gap: .9rem; align-items: flex-start; padding: .9rem 1rem; }
.plancard__num { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 700; flex: none; }
.plancard__main { flex: 1; min-width: 0; }
.plancard__actions { display: flex; flex-direction: column; gap: .1rem; }
.adminlist { list-style: none; padding: 0; display: grid; gap: .5rem; }
.adminrow { display: flex; align-items: center; justify-content: space-between; gap: .8rem; padding: .75rem .9rem; }
.adminrow.is-archived { opacity: .6; }
.adminrow__main { min-width: 0; }
.adminrow__main h3 { font-size: .98rem; margin: 0; }
.adminrow__actions { display: flex; gap: .1rem; flex: none; }
.url { color: var(--muted); margin: .1rem 0 0; word-break: break-all; }
.links { padding-inline-start: 1.1rem; }
.checklist { display: grid; gap: .4rem; }
.progress-head { display: flex; align-items: center; gap: 1.4rem; padding: 1.2rem; flex-wrap: wrap; }
.progress-head__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: .8rem; flex: 1; }
.progress-head__grid > div { display: flex; flex-direction: column; }
.tabs { display: flex; gap: .3rem; flex-wrap: wrap; margin: 1.1rem 0 .9rem; border-bottom: 1px solid var(--line); padding-bottom: .5rem; }
.tab { border: 1px solid transparent; background: transparent; color: var(--muted); padding: .45rem .8rem; border-radius: 9px; cursor: pointer; font-family: inherit; font-size: .88rem; }
.tab.is-on { background: var(--accent-soft); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.accents { display: flex; gap: .4rem; flex-wrap: wrap; }
.accent { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--line); background: var(--panel-2); color: var(--txt-2); border-radius: 999px; padding: .3rem .7rem; cursor: pointer; font-family: inherit; font-size: .82rem; }
.accent span { width: 14px; height: 14px; border-radius: 50%; background: var(--swatch); display: inline-block; }
.accent.is-on { border-color: var(--accent); color: var(--txt); }

/* ---------- تجاوب ---------- */
@media (max-width: 980px) {
  .sidebar { position: fixed; inset-block: var(--topbar-h) 0; inset-inline-end: 0; z-index: 60; transform: translateX(110%); transition: transform var(--t); box-shadow: var(--shadow); background: var(--bg-2); }
  .sidebar.is-open { transform: none; }
  .only-mobile { display: inline-flex; }
  .viewer__panel { width: 300px; }
}

@media (max-width: 820px) {
  .search { display: none; }
  .hero { flex-direction: column; align-items: stretch; }
  .viewer { height: auto; }
  .viewer__body { flex-direction: column; }
  .viewer__stage { height: 62vh; }
  .viewer__stage.is-narrow { flex: none; }
  .viewer__panel { width: auto; border-inline-start: 0; border-top: 1px solid var(--line); max-height: none; }
  .cards--list .lab-card { flex-direction: column; }
  .cards--list .card__media { width: 100%; aspect-ratio: 16/9; }
  .pad { padding: 1rem .8rem 5.5rem; }
  .tabbar {
    display: flex; position: fixed; inset-block-end: 0; inset-inline: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(12px);
    border-top: 1px solid var(--line); justify-content: space-around; padding: .3rem .2rem;
  }
  .tabbar__item { display: flex; flex-direction: column; align-items: center; gap: .1rem; font-size: .66rem; color: var(--muted); padding: .25rem .5rem; border-radius: 8px; }
  .tabbar__item .ico { width: 20px; height: 20px; }
  .tabbar__item.is-active { color: var(--accent); background: var(--accent-soft); }
  body.is-viewer .tabbar { display: none; }
  .topbar { padding: 0 .6rem; gap: .4rem; }
  .brand__text small { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

@media print {
  .topbar, .sidebar, .tabbar, .card__actions, .toolbar, .page-head__actions { display: none !important; }
  body { background: #fff; color: #000; }
}


/* ---------- مختبر المهمات الفضائية الأصلي ---------- */
.physics-page { max-width: 1360px; }
.physics-intro { display:flex; align-items:center; justify-content:space-between; gap:1rem; padding:1.35rem 1.5rem; margin-bottom:1rem; }
.physics-intro h1 { margin:.1rem 0 .4rem; }
.physics-stamp { flex:none; width:88px; height:88px; display:grid; place-content:center; text-align:center; border:1px solid color-mix(in srgb,var(--accent) 55%,var(--line)); border-radius:50%; color:var(--accent); font-size:.78rem; font-weight:700; line-height:1.45; box-shadow:0 0 32px var(--accent-soft), inset 0 0 20px var(--accent-soft); }
.physics-tabs { margin-top:.4rem; }
.physics-callout { display:grid; gap:.25rem; margin-bottom:1rem; padding:.85rem 1rem; }
.physics-callout strong { color:var(--txt); }
.flight-layout,.transfer-layout { display:grid; grid-template-columns:minmax(330px,.95fr) minmax(0,1.05fr); gap:1rem; align-items:start; }
.flight-form { padding:1rem; }
.flight-form .section__head { margin-bottom:.8rem; }
.flight-form__grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.65rem; }
.flight-form__grid--stage { grid-template-columns:repeat(4,minmax(0,1fr)); }
.physics-field { display:flex; flex-direction:column; gap:.3rem; min-width:0; color:var(--muted); font-size:.8rem; }
.physics-field input:not([type=range]),.physics-field select { width:100%; min-width:0; }
.physics-range { display:flex; align-items:center; gap:.6rem; }
.physics-range input { width:100%; accent-color:var(--accent); }
.physics-range output { min-width:3.5rem; color:var(--txt); text-align:end; font-variant-numeric:tabular-nums; }
.flight-subhead { margin:1.05rem 0 .45rem; color:var(--txt-2); font-size:.92rem; }
.stage-stack { display:grid; gap:.55rem; }
.stage-card { min-width:0; margin:0; padding:.65rem; border:1px solid var(--line); border-radius:12px; background:color-mix(in srgb,var(--panel-2) 50%,transparent); }
.stage-card legend { padding:0 .35rem; color:var(--accent); font-size:.82rem; font-weight:600; }
.stage-card[hidden],[data-leg-picker-wrap][hidden] { display:none; }
.flight-form > .btn { margin-top:.7rem; }
.flight-output { display:grid; gap:.75rem; min-width:0; }
.physics-metrics { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:.5rem; margin:.7rem 0; }
.physics-metric { min-width:0; display:flex; flex-direction:column; gap:.12rem; padding:.58rem .65rem; border:1px solid var(--line); border-radius:10px; background:var(--panel-2); }
.physics-metric span { color:var(--muted); font-size:.73rem; }
.physics-metric strong { color:var(--accent); font-size:1rem; line-height:1.4; overflow-wrap:anywhere; }
.physics-metric small { color:var(--muted); font-size:.68rem; line-height:1.45; }
.stage-events { display:flex; flex-wrap:wrap; gap:.35rem; align-items:center; border-top:1px solid var(--line); padding-top:.6rem; }
.physics-caveat { margin:.65rem 0 0; }
.chart-panel canvas { display:block; width:100%; height:190px; }
.chart-panel h3 { margin-bottom:.45rem; }
.trial-panel { min-width:0; }
.trial-panel .section__head { margin-bottom:.4rem; }
.save-trial { display:flex; flex-wrap:wrap; gap:.45rem; margin-top:.6rem; }
.save-trial input { flex:1 1 150px; min-width:0; }
.trials-scroll { overflow-x:auto; margin:.4rem 0 .6rem; }
.trials-table { width:100%; border-collapse:collapse; font-size:.76rem; white-space:nowrap; }
.trials-table th,.trials-table td { padding:.45rem .5rem; border-bottom:1px solid var(--line); text-align:right; }
.trials-table th { color:var(--muted); font-weight:500; }
.physics-equations { margin-top:1rem; }
.equation { overflow-x:auto; padding:.65rem; border-radius:9px; color:var(--info); background:var(--bg-2); text-align:center; font-weight:600; }
.physics-future { margin-top:1rem; padding:1rem 1.15rem; }
.physics-future summary { cursor:pointer; color:var(--accent); font-weight:600; }
.physics-future__grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.15rem 1rem; margin-top:.7rem; }
.physics-future__grid p { padding:.55rem .7rem; border-inline-start:2px solid var(--line-2); color:var(--txt-2); }
.physics-sources { margin:1rem 0 .2rem; line-height:2; }
.physics-sources a { color:var(--info); text-decoration:underline; text-underline-offset:3px; }

/* أداة بناء مسار يبدأ من كوكب ويمرّ بمحطات اختيارية */
.transfer-controls { min-width:0; }
.mission-route { display:grid; gap:.55rem; }
.route-nodes { display:grid; gap:.25rem; }
.route-node { display:flex; align-items:center; gap:.45rem; min-width:0; padding:.35rem; border:1px solid var(--line); border-radius:10px; background:var(--panel-2); }
.route-node select { flex:1; min-width:0; }
.route-node__num { display:grid; place-items:center; width:24px; height:24px; flex:none; border-radius:50%; background:var(--accent-soft); color:var(--accent); font-size:.75rem; font-weight:700; }
.route-arrow { display:block; padding-inline-start:1rem; color:var(--accent); font-size:1rem; line-height:1.2; }
.route-summary { margin:.8rem 0 .45rem; padding:.7rem; border-color:color-mix(in srgb,var(--accent) 28%,var(--line)); }
.route-summary__metrics { grid-template-columns:repeat(3,minmax(0,1fr)); margin-bottom:0; }
.route-legs { display:grid; gap:.35rem; margin:.5rem 0; }
.route-leg { display:flex; justify-content:space-between; gap:.6rem; flex-wrap:wrap; padding:.45rem .55rem; border-bottom:1px solid var(--line); font-size:.76rem; }
.route-leg span { color:var(--muted); }
.transfer-metrics__grid { grid-template-columns:repeat(2,minmax(0,1fr)); margin-top:.55rem; }
.transfer-delta { grid-column:1/-1; padding:.55rem; border:1px dashed var(--line-2); border-radius:9px; font-size:.78rem; }
.planet-facts { display:grid; gap:.35rem; margin:.65rem 0; }
.planet-fact { display:grid; grid-template-columns:12px auto; align-items:center; column-gap:.45rem; padding:.38rem .5rem; border-bottom:1px solid var(--line); }
.planet-fact__dot { grid-row:span 2; width:10px; height:10px; border-radius:50%; background:var(--planet); box-shadow:0 0 10px color-mix(in srgb,var(--planet) 60%,transparent); }
.planet-fact strong { font-size:.8rem; }
.planet-fact small { grid-column:2; color:var(--muted); font-size:.7rem; }
.transfer-time { margin-top:.6rem; }
.transfer-visual { min-width:0; }
.transfer-visual canvas { display:block; width:100%; height:430px; }
.transfer-legend { display:flex; justify-content:center; gap:1.2rem; flex-wrap:wrap; color:var(--muted); font-size:.76rem; }
.transfer-legend span { display:inline-flex; align-items:center; gap:.35rem; }
.legend-dot { width:9px; height:9px; display:inline-block; border-radius:50%; }
.legend-dot--from { background:#55a8ff; }
.legend-dot--to { background:#ef795f; }
.legend-dot--craft { background:#fff; }
.transfer-explain { margin-top:1rem; }

@media (max-width:1050px) {
  .flight-layout,.transfer-layout { grid-template-columns:1fr; }
  .flight-form__grid--stage { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .transfer-visual { grid-row:1; }
}
@media (max-width:620px) {
  .physics-intro { padding:1rem; }
  .physics-intro h1 { font-size:1.4rem; }
  .physics-stamp { width:68px; height:68px; font-size:.68rem; }
  .physics-tabs .tab { flex:1 1 100%; text-align:center; }
  .flight-form__grid,.flight-form__grid--stage { grid-template-columns:1fr 1fr; }
  .physics-metrics { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .route-summary__metrics { grid-template-columns:1fr; }
  .physics-future__grid { grid-template-columns:1fr; }
  .transfer-visual canvas { height:330px; }
}


/* ---------- الهوية الأصلية للمختبر ---------- */
.mission-hero { border-color:color-mix(in srgb,var(--accent) 32%,var(--line)); }
.mission-orbit { display:flex; flex-direction:column; align-items:center; justify-content:center; gap:.08rem; border:1px solid color-mix(in srgb,var(--accent) 50%,var(--line)); border-radius:50%; color:var(--accent); font-size:.75rem; box-shadow:0 0 32px var(--accent-soft),inset 0 0 24px var(--accent-soft); }
.mission-orbit i { font-style:normal; color:var(--info); }
.mission-orbit b { color:var(--txt-2); }
.mission-stats .stat__num { color:var(--accent); }
.mission-steps { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:.8rem; margin:1rem 0; }
.mission-step { position:relative; padding:1rem; overflow:hidden; }
.mission-step h2 { margin:.2rem 0; font-size:1.12rem; }
.mission-step p { min-height:4.3rem; color:var(--txt-2); font-size:.88rem; }
.mission-step a { color:var(--info); font-size:.84rem; font-weight:600; }
.mission-step__number { display:inline-grid; place-items:center; width:34px; height:34px; border-radius:50%; background:var(--accent-soft); color:var(--accent); font-size:.74rem; font-weight:700; }
.mission-notes { margin-top:.4rem; }
.mission-notes ol { padding-inline-start:1.4rem; color:var(--txt-2); line-height:1.85; }
.mission-notes p { color:var(--txt-2); }
.mission-modules { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.8rem; }
.mission-module { position:relative; min-height:235px; padding:1rem 1.15rem; overflow:hidden; }
.mission-module__top { display:flex; align-items:center; justify-content:space-between; }
.mission-module__icon { position:absolute; inset-inline-end:1.1rem; top:3.3rem; color:color-mix(in srgb,var(--accent) 70%,var(--info)); font-size:2rem; opacity:.55; }
.mission-module h2 { margin:1.2rem 0 .4rem; font-size:1.12rem; }
.mission-module p { max-width:52ch; min-height:4.2rem; color:var(--txt-2); font-size:.88rem; }
.mission-notice { margin-top:1rem; }
.mission-notice p { margin:.3rem 0 .6rem; }
.chart-text { color:var(--txt-2); font-size:.8rem; line-height:1.6; }
.chart-data { margin-top:.35rem; font-size:.8rem; }
.chart-data summary { cursor:pointer; color:var(--info); }
.chart-data table { margin-top:.5rem; }
.lesson-meta { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.8rem; }
.lesson-steps { display:grid; gap:.7rem; margin:1rem 0; }
.lesson-step { display:grid; grid-template-columns:auto minmax(180px,1.2fr) minmax(120px,.45fr) minmax(250px,2fr); gap:.8rem; align-items:start; padding:1rem; }
.lesson-step__title,.lesson-step .physics-field { display:grid; gap:.35rem; }
.lesson-step__title span { color:var(--muted); font-size:.78rem; }
.lesson-step__prompt { grid-column:4; }
.lesson-step > p { grid-column:2/-1; margin:0; }
.lesson-total { display:flex; align-items:center; justify-content:space-between; gap:1rem; margin-bottom:1rem; }
@media(max-width:850px) { .lesson-step { grid-template-columns:auto 1fr 1fr; } .lesson-step__prompt { grid-column:2/-1; } }
@media(max-width:580px) { .lesson-meta { grid-template-columns:1fr; } .lesson-step { grid-template-columns:auto 1fr; } .lesson-step .physics-field,.lesson-step__prompt,.lesson-step > p { grid-column:2; } .lesson-total { align-items:flex-start; flex-direction:column; } }
@media print { .topbar,.sidebar,.tabbar,.page-head__actions,.lesson-plan-page .eyebrow,.lesson-plan-page .btn { display:none !important; } .lesson-step,.lesson-meta,.lesson-total { break-inside:avoid; box-shadow:none; border:1px solid #aaa; color:#111; } .lesson-plan-page { max-width:none; } }
@media(max-width:820px) { .mission-steps { grid-template-columns:1fr; } .mission-step p { min-height:0; } }
@media(max-width:620px) { .mission-modules { grid-template-columns:1fr; } .mission-module { min-height:0; } .mission-module p { min-height:0; } .mission-orbit { width:66px; height:66px; } }


/* إدارة تصميمات الصاروخ المحفوظة محليًا */
.saved-designs{margin:1rem 0;padding:1rem;border:1px solid var(--line-2);border-radius:var(--radius);background:color-mix(in srgb,var(--panel-2) 72%,transparent)}
.saved-designs__row{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:end;gap:.65rem;margin-bottom:.55rem}
.saved-designs__row:last-of-type{grid-template-columns:minmax(0,1fr) auto}
.saved-designs__row .physics-field{margin:0}
.saved-designs__row .btn{white-space:nowrap}
.preset-list{display:grid;gap:.8rem}
.preset-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1rem;align-items:center;padding:1rem}
.preset-card h3{margin:.25rem 0}
.preset-card .physics-field{max-width:28rem;margin-top:.7rem}
.preset-card__actions{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
@media(max-width:720px){
  .saved-designs__row,.saved-designs__row:last-of-type{grid-template-columns:minmax(0,1fr) auto}
  .saved-designs__row:first-child .physics-field{grid-column:1/-1}
  .saved-designs__row .btn{white-space:normal}
  .preset-card{grid-template-columns:1fr}
  .preset-card__actions>*{flex:1 1 auto}
}


/* ---------- صوت الإطلاق، مسار لامبرت، وهوية المدرسة ---------- */
.school-credit { display:grid; grid-template-columns:minmax(170px,.85fr) minmax(170px,.75fr) minmax(260px,1.8fr); gap:.8rem; padding:.8rem 1rem; margin: .8rem 0; border-color:color-mix(in srgb,var(--accent) 32%,var(--line)); background:linear-gradient(115deg,var(--panel),color-mix(in srgb,var(--accent) 9%,var(--panel))); }
.school-credit > div { min-width:0; display:grid; gap:.12rem; padding-inline-start:.65rem; border-inline-start:2px solid var(--accent); }
.school-credit span { color:var(--muted); font-size:.72rem; }
.school-credit strong { color:var(--txt); font-size:.86rem; overflow-wrap:anywhere; }
.school-credit--compact { margin:.2rem 0 .8rem; }
.launch-audio-controls { display:grid; grid-template-columns:minmax(0,1fr) minmax(150px,.75fr) auto; gap:.65rem; align-items:end; margin:.8rem 0 .25rem; padding:.8rem; border:1px solid var(--line); border-radius:12px; background:var(--panel-2); }
.launch-audio-controls > p { grid-column:1/-1; margin:0; }
.audio-toggle { display:flex; align-items:center; gap:.5rem; color:var(--txt-2); font-size:.82rem; }
.audio-toggle input { accent-color:var(--accent); }
.launch-audio-controls audio { display:none; }
.launch-scene canvas { display:block; width:100%; height:250px; border:1px solid var(--line); border-radius:10px; background:#041109; }
.launch-scene .section__head { margin-bottom:.4rem; }
.lambert-settings { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.65rem; margin:.5rem 0; padding:.7rem; border:1px solid color-mix(in srgb,var(--accent) 35%,var(--line)); border-radius:12px; background:var(--accent-soft); }
.lambert-settings[hidden] { display:none; }
.lambert-settings > p { grid-column:1/-1; margin:0; }
.route-summary__metrics { grid-template-columns:repeat(4,minmax(0,1fr)); }
.warn-note { color:var(--warn); font-size:.82rem; }

@media (max-width:900px) {
  .school-credit { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .school-credit > div:last-child { grid-column:1/-1; }
}
@media (max-width:620px) {
  .school-credit { grid-template-columns:1fr; }
  .school-credit > div:last-child { grid-column:auto; }
  .launch-audio-controls { grid-template-columns:1fr 1fr; }
  .launch-audio-controls .physics-field { grid-column:1/-1; }
  .launch-audio-controls > p { grid-column:1/-1; }
  .lambert-settings { grid-template-columns:1fr; }
  .lambert-settings > p { grid-column:auto; }
  .route-summary__metrics { grid-template-columns:repeat(2,minmax(0,1fr)); }
}

@media print {
  .school-credit { background:#fff; border:1px solid #8ca093; }
  .school-credit > div { border-inline-start-color:#27854a; }
}