/* =========================================================================
   استایل‌های اختصاصی صفحه‌ها
   ========================================================================= */

/* ---------- صفحهٔ اصلی: هیرو ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(90% 120% at 88% -10%, rgba(43, 169, 212, .22) 0%, transparent 58%),
    radial-gradient(70% 100% at 8% 110%, rgba(242, 114, 75, .16) 0%, transparent 55%),
    linear-gradient(170deg, var(--surface-2) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(43, 169, 212, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 169, 212, .09) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(100% 80% at 60% 0%, #000 10%, transparent 72%);
}
.hero-inner {
  position: relative; display: grid; gap: 2.6rem; align-items: center;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  padding-block: clamp(2.6rem, 1.6rem + 4vw, 5rem);
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .32rem .85rem; border-radius: var(--r-pill);
  background: var(--surface); border: 1px solid var(--line-2);
  font-size: .8rem; font-weight: 700; color: var(--primary-700);
  box-shadow: var(--sh-1); margin-bottom: 1.1rem;
}
.hero h1 { margin-bottom: 1rem; }
.hero h1 em {
  font-style: normal; position: relative; white-space: nowrap;
  background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead { font-size: clamp(1rem, .95rem + .35vw, 1.13rem); color: var(--ink-2); max-width: 54ch; line-height: 1.95; }
.hero-cta { display: flex; gap: .7rem; flex-wrap: wrap; margin-top: 1.7rem; }
.hero-trust { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 1.8rem; font-size: .82rem; color: var(--muted); }
.hero-trust span { display: inline-flex; align-items: center; gap: .35rem; }
.hero-trust svg { color: var(--ok); }

.hero-art {
  position: relative; aspect-ratio: 4 / 3.4;
  border-radius: var(--r-xl); overflow: hidden;
  background: var(--surface); border: 1px solid var(--line);
  box-shadow: var(--sh-3);
}
.hero-art canvas { width: 100%; height: 100%; }
.hero-art__chrome {
  position: absolute; inset-block-start: 0; inset-inline: 0; height: 38px;
  display: flex; align-items: center; gap: .4rem; padding-inline: .9rem;
  background: var(--surface-2); border-bottom: 1px solid var(--line); z-index: 2;
}
.hero-art__chrome i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-2); }
.hero-art__chrome i:first-child { background: #ff6058; }
.hero-art__chrome i:nth-child(2) { background: #ffbd2e; }
.hero-art__chrome i:nth-child(3) { background: #29c941; }
.hero-art__chrome b { font-size: .75rem; color: var(--muted); font-weight: 600; margin-inline-start: .4rem; }
.hero-art__stage { position: absolute; inset: 38px 0 0 0; }

.hero-badge {
  position: absolute; z-index: 3; display: flex; align-items: center; gap: .5rem;
  padding: .5rem .8rem; border-radius: var(--r-md);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(8px); border: 1px solid var(--line);
  box-shadow: var(--sh-2); font-size: .78rem; font-weight: 700;
  animation: float 5s ease-in-out infinite;
}
.hero-badge b { font-size: .95rem; }
.hero-badge.b1 { inset-block-end: 1.1rem; inset-inline-start: 1.1rem; }
.hero-badge.b2 { inset-block-start: 3.4rem; inset-inline-end: 1.1rem; animation-delay: -2.5s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }

/* نوار آمار */
.stat-strip {
  display: grid; gap: 1px; background: var(--line);
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border: 1px solid var(--line); border-radius: var(--r-md);
  overflow: hidden; box-shadow: var(--sh-1);
}
.stat-strip > div { background: var(--surface); padding: 1.2rem 1rem; text-align: center; }
.stat-strip b { display: block; font-size: 1.75rem; font-weight: 800; color: var(--primary-700); line-height: 1.3; }
.stat-strip span { font-size: .82rem; color: var(--muted); }

/* بلوک ویژگی‌ها */
.feature {
  display: flex; gap: .95rem; padding: 1.3rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-1);
  transition: transform .18s, box-shadow .18s;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.feature__ico {
  width: 44px; height: 44px; border-radius: 13px; flex: none;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(140deg, var(--c, var(--primary)), color-mix(in srgb, var(--c, var(--primary)) 60%, #0b3d52));
  box-shadow: 0 5px 14px color-mix(in srgb, var(--c, var(--primary)) 35%, transparent);
}
.feature h3 { font-size: 1.02rem; margin-bottom: .3rem; }
.feature p { font-size: .89rem; color: var(--ink-2); line-height: 1.8; }

/* مسیر یادگیری */
.flow { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); counter-reset: step; }
.flow-step {
  position: relative; padding: 1.5rem 1.2rem 1.2rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-1);
}
.flow-step::before {
  counter-increment: step; content: counter(step, persian);
  position: absolute; inset-block-start: -15px; inset-inline-start: 1.2rem;
  width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center; font-size: .88rem; font-weight: 800;
  background: var(--primary); color: #fff; box-shadow: 0 3px 10px rgba(43, 169, 212, .4);
}
.flow-step h3 { font-size: 1rem; margin-bottom: .35rem; }
.flow-step p { font-size: .87rem; color: var(--ink-2); line-height: 1.8; }

/* ---------- کاتالوگ ---------- */
.filter-bar {
  display: flex; flex-direction: column; gap: .9rem;
  padding: 1.1rem 1.2rem; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--r-md);
  box-shadow: var(--sh-1); margin-bottom: 1.8rem;
}
.filter-row { display: flex; align-items: center; gap: .7rem; flex-wrap: wrap; }
.filter-row > b { font-size: .8rem; color: var(--muted); font-weight: 700; min-width: 62px; }

.empty-state {
  text-align: center; padding: 4rem 1.5rem; color: var(--muted);
  background: var(--surface); border: 1px dashed var(--line-2); border-radius: var(--r-md);
}
.empty-state svg { width: 46px; height: 46px; margin: 0 auto 1rem; opacity: .5; }

/* ---------- صفحهٔ آزمایشگاه ---------- */
.lab-hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(70% 130% at 88% 0%, color-mix(in srgb, var(--c) 22%, transparent) 0%, transparent 62%),
    linear-gradient(160deg, var(--surface-2) 0%, var(--bg) 100%);
}
.lab-hero__inner {
  display: grid; gap: 2rem; align-items: center;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  padding-block: clamp(2rem, 1.4rem + 2.6vw, 3.4rem);
}
.lab-hero__glyph {
  width: 76px; height: 76px; border-radius: 22px; margin-bottom: 1.1rem;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(140deg, var(--c), color-mix(in srgb, var(--c) 60%, #0b3d52));
  box-shadow: 0 10px 26px color-mix(in srgb, var(--c) 42%, transparent);
}
.lab-hero__glyph svg { width: 40px; height: 40px; }
.lab-hero p { color: var(--ink-2); max-width: 62ch; margin-top: .7rem; line-height: 1.95; }

.lab-side {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 1.3rem; box-shadow: var(--sh-2);
}
.lab-side dl { display: grid; gap: .7rem; margin: 0; }
.lab-side .kv { display: flex; justify-content: space-between; gap: 1rem; font-size: .88rem; }
.lab-side .kv dt { color: var(--muted); }
.lab-side .kv dd { margin: 0; font-weight: 700; }

.highlight-list { list-style: none; padding: 0; display: grid; gap: .55rem; }
.highlight-list li { display: flex; gap: .55rem; font-size: .9rem; color: var(--ink-2); line-height: 1.7; }
.highlight-list svg { color: var(--ok); flex: none; margin-top: .35rem; }

/* فهرست درس‌ها */
.lesson-list { display: grid; gap: .7rem; }
.lesson-row {
  display: grid; gap: .9rem; align-items: center;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  padding: .95rem 1.1rem; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--r-md);
  box-shadow: var(--sh-1); color: var(--ink);
  transition: transform .16s, box-shadow .16s, border-color .16s;
}
.lesson-row:hover {
  transform: translateX(-4px); box-shadow: var(--sh-2);
  border-color: var(--primary); color: var(--ink);
}
.lesson-row__n {
  width: 42px; height: 42px; border-radius: 13px; flex: none;
  display: grid; place-items: center; font-size: .98rem; font-weight: 800;
  background: var(--surface-3); color: var(--ink-2);
}
.lesson-row.done .lesson-row__n { background: var(--ok); color: #fff; }
.lesson-row.active .lesson-row__n { background: var(--primary); color: #fff; }
.lesson-row__title { font-weight: 700; font-size: .99rem; line-height: 1.5; }
.lesson-row__sum { font-size: .82rem; color: var(--muted); margin-top: .18rem; line-height: 1.6; }
.lesson-row__meta { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: .4rem; font-size: .74rem; color: var(--muted); }
.lesson-row__meta span { display: inline-flex; align-items: center; gap: .25rem; }
.lesson-row__side { display: flex; flex-direction: column; align-items: flex-end; gap: .35rem; min-width: 88px; }
.lesson-row__side .bar { width: 78px; }

.exam-cta {
  display: flex; gap: 1.2rem; align-items: center; flex-wrap: wrap;
  padding: 1.4rem 1.5rem; border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary) 60%, #35c0e4 100%);
  color: #fff; box-shadow: 0 12px 30px rgba(43, 169, 212, .35);
}
.exam-cta.locked {
  background: var(--surface); color: var(--ink);
  border: 1px dashed var(--line-2); box-shadow: none;
}
.exam-cta__ico {
  width: 54px; height: 54px; border-radius: 16px; flex: none;
  display: grid; place-items: center; background: rgba(255, 255, 255, .18);
}
.exam-cta.locked .exam-cta__ico { background: var(--surface-3); color: var(--muted); }
.exam-cta h3 { font-size: 1.15rem; }
.exam-cta p { font-size: .89rem; opacity: .92; margin-top: .2rem; }
.exam-cta.locked p { color: var(--ink-2); opacity: 1; }

/* ---------- صفحهٔ درس ---------- */
.lesson-layout {
  display: grid; gap: 1.6rem; align-items: start;
  grid-template-columns: minmax(0, 1fr) 288px;
  padding-block: 1.8rem 3rem;
}
.lesson-aside { position: sticky; top: calc(var(--header-h) + 1.1rem); display: grid; gap: 1rem; }

.crumbs { display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; font-size: .82rem; color: var(--muted); padding-block: 1rem .2rem; }
.crumbs a { color: var(--ink-2); }
.crumbs a:hover { color: var(--primary-700); }
.crumbs svg { width: .85em; height: .85em; opacity: .6; }

/* گام‌های درس */
.steps { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1.4rem; }
.step-tab {
  display: flex; align-items: center; gap: .5rem;
  padding: .6rem 1.05rem; border-radius: var(--r-pill);
  border: 1px solid var(--line-2); background: var(--surface);
  font-size: .89rem; font-weight: 700; color: var(--ink-2);
  transition: all .16s;
}
.step-tab:hover { border-color: var(--primary); color: var(--primary-700); }
.step-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 3px 12px rgba(43, 169, 212, .32); }
.step-tab .n {
  width: 21px; height: 21px; border-radius: 50%; flex: none;
  display: grid; place-items: center; font-size: .72rem; font-weight: 800;
  background: var(--surface-3); color: var(--ink-2);
}
.step-tab.active .n { background: rgba(255, 255, 255, .26); color: #fff; }
.step-tab.done .n { background: var(--ok); color: #fff; }

.panel { display: none; }
.panel.active { display: block; animation: fade-up .28s cubic-bezier(.22, 1, .36, 1); }
@keyframes fade-up { from { opacity: 0; transform: translateY(8px); } }

.lesson-nav {
  display: flex; justify-content: space-between; gap: .8rem; flex-wrap: wrap;
  margin-top: 2.2rem; padding-top: 1.4rem; border-top: 1px solid var(--line);
}

.objectives { list-style: none; padding: 0; display: grid; gap: .5rem; }
.objectives li { display: flex; gap: .55rem; font-size: .9rem; color: var(--ink-2); line-height: 1.75; }
.objectives svg { color: var(--primary); flex: none; margin-top: .35rem; }

.note-box textarea { min-height: 120px; font-size: .9rem; }

/* ---------- شبیه‌ساز ---------- */
.sim {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-2);
}
.sim-head {
  display: flex; align-items: center; gap: .8rem; flex-wrap: wrap;
  padding: .85rem 1.1rem; background: var(--surface-2); border-bottom: 1px solid var(--line);
}
.sim-head__ico {
  width: 36px; height: 36px; border-radius: 11px; flex: none;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(140deg, var(--c, var(--primary)), color-mix(in srgb, var(--c, var(--primary)) 58%, #0b3d52));
}
.sim-head b { font-size: .97rem; }
.sim-head span { font-size: .78rem; color: var(--muted); display: block; }

.sim-body { display: grid; grid-template-columns: minmax(0, 1fr) 262px; }
.sim-stage {
  position: relative; background:
    linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
  min-height: 340px; display: grid; place-items: center; padding: .6rem;
}
.sim-stage canvas { width: 100%; height: auto; border-radius: var(--r-sm); touch-action: none; }
.sim-stage__hint {
  position: absolute; inset-block-end: .6rem; inset-inline-start: .7rem;
  font-size: .72rem; color: var(--muted); background: color-mix(in srgb, var(--surface) 85%, transparent);
  padding: .18rem .5rem; border-radius: var(--r-xs); pointer-events: none;
}

.sim-controls {
  border-inline-start: 1px solid var(--line); background: var(--surface);
  padding: 1rem; display: flex; flex-direction: column; gap: .85rem;
  max-height: 560px; overflow-y: auto;
}
.sim-controls h4 {
  font-size: .76rem; letter-spacing: .05em; color: var(--muted);
  text-transform: uppercase; font-weight: 800;
}

.ctrl { display: grid; gap: .3rem; }
.ctrl__top { display: flex; justify-content: space-between; align-items: baseline; gap: .5rem; }
.ctrl__label { font-size: .82rem; font-weight: 600; color: var(--ink-2); }
.ctrl__val {
  font-size: .82rem; font-weight: 800; color: var(--primary-700);
  font-variant-numeric: tabular-nums;
}
.ctrl__val small { font-weight: 600; color: var(--muted); font-size: .74rem; margin-inline-start: .18rem; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 20px;
  background: transparent; cursor: pointer; direction: ltr;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 5px; border-radius: var(--r-pill); background: var(--surface-3);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 16px; height: 16px; margin-top: -5.5px;
  border-radius: 50%; background: var(--primary); border: 2.5px solid var(--surface);
  box-shadow: 0 1px 5px rgba(18, 45, 62, .3); transition: transform .12s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.18); }
input[type="range"]::-moz-range-track { height: 5px; border-radius: var(--r-pill); background: var(--surface-3); }
input[type="range"]::-moz-range-thumb {
  width: 13px; height: 13px; border-radius: 50%; background: var(--primary);
  border: 2.5px solid var(--surface); box-shadow: 0 1px 5px rgba(18, 45, 62, .3);
}

.readouts { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 1px; background: var(--line); border-top: 1px solid var(--line); }
.readout { background: var(--surface-2); padding: .7rem .85rem; }
.readout span { display: block; font-size: .72rem; color: var(--muted); margin-bottom: .12rem; }
.readout b {
  font-size: 1.02rem; font-weight: 800; color: var(--ink);
  font-variant-numeric: tabular-nums; line-height: 1.4; word-break: break-word;
}
.readout b small { font-size: .68rem; font-weight: 600; color: var(--muted); margin-inline-start: .2rem; }

.sim-actions { display: flex; gap: .45rem; flex-wrap: wrap; padding: .8rem 1.1rem; border-top: 1px solid var(--line); background: var(--surface-2); }

.mission {
  background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  border-radius: var(--r-md); padding: 1.1rem 1.2rem;
}
.mission h4 { display: flex; align-items: center; gap: .45rem; color: var(--accent-600); font-size: .95rem; margin-bottom: .5rem; }
.mission p { font-size: .9rem; color: var(--ink-2); line-height: 1.85; }
.mission ol { margin-top: .6rem; padding-inline-start: 1.3em; display: grid; gap: .4rem; }
.mission li { font-size: .89rem; color: var(--ink); line-height: 1.75; }
.mission .expect {
  margin-top: .8rem; padding-top: .7rem; border-top: 1px dashed color-mix(in srgb, var(--accent) 32%, transparent);
  font-size: .85rem; color: var(--ink-2);
}
html[data-theme="dark"] .mission h4 { color: var(--accent); }

/* ---------- آزمون ---------- */
.quiz { display: grid; gap: 1rem; }
.q-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 1.2rem 1.3rem; box-shadow: var(--sh-1);
  transition: border-color .2s;
}
.q-card.answered { border-color: var(--line-2); }
.q-card.correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok-soft) 55%, var(--surface)); }
.q-card.wrong   { border-color: var(--bad); background: color-mix(in srgb, var(--bad-soft) 55%, var(--surface)); }

.q-head { display: flex; gap: .7rem; margin-bottom: .9rem; }
.q-num {
  width: 28px; height: 28px; border-radius: 9px; flex: none;
  display: grid; place-items: center; font-size: .8rem; font-weight: 800;
  background: var(--primary-soft); color: var(--primary-700);
}
.q-text { font-weight: 700; line-height: 1.85; font-size: .99rem; }

.choices { display: grid; gap: .5rem; }
.choice {
  display: flex; align-items: flex-start; gap: .65rem;
  padding: .68rem .9rem; border-radius: var(--r-sm);
  border: 1.5px solid var(--line); background: var(--surface);
  cursor: pointer; transition: all .14s; font-size: .93rem; line-height: 1.7;
}
.choice:hover { border-color: var(--primary); background: var(--primary-soft); }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice__mark {
  width: 24px; height: 24px; border-radius: 8px; flex: none;
  display: grid; place-items: center; font-size: .76rem; font-weight: 800;
  background: var(--surface-3); color: var(--ink-2); transition: all .14s;
}
.choice.selected { border-color: var(--primary); background: var(--primary-soft); }
.choice.selected .choice__mark { background: var(--primary); color: #fff; }
.choice.is-correct { border-color: var(--ok); background: var(--ok-soft); }
.choice.is-correct .choice__mark { background: var(--ok); color: #fff; }
.choice.is-wrong { border-color: var(--bad); background: var(--bad-soft); }
.choice.is-wrong .choice__mark { background: var(--bad); color: #fff; }
.choice.locked { cursor: default; }

.explain {
  margin-top: .85rem; padding: .75rem .9rem; border-radius: var(--r-sm);
  background: var(--surface-2); border-inline-start: 3px solid var(--primary);
  font-size: .88rem; color: var(--ink-2); line-height: 1.85; display: none;
}
.explain.show { display: block; animation: fade-up .24s ease; }
.explain b { color: var(--ink); }

.quiz-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 1rem 1.2rem; border-radius: var(--r-md);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--sh-1);
}
.quiz-bar .progress-text { font-size: .88rem; color: var(--ink-2); }
.quiz-bar .bar { width: 150px; }

.score-card {
  text-align: center; padding: 2rem 1.5rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); box-shadow: var(--sh-2);
}
.score-card .ring { margin: 0 auto 1.1rem; }
.score-card h3 { margin-bottom: .35rem; }
.score-card p { color: var(--ink-2); font-size: .92rem; }
.score-card .actions { display: flex; gap: .6rem; justify-content: center; flex-wrap: wrap; margin-top: 1.4rem; }

/* آزمون پایانی */
.exam-top {
  position: sticky; top: calc(var(--header-h) + .6rem); z-index: 40;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: .85rem 1.2rem; margin-bottom: 1.4rem;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(10px); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-2);
}
.timer {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .4rem .9rem; border-radius: var(--r-pill);
  background: var(--primary-soft); color: var(--primary-700);
  font-weight: 800; font-variant-numeric: tabular-nums; font-size: .95rem;
}
.timer.warn { background: var(--warn-soft); color: var(--warn); }
.timer.danger { background: var(--bad-soft); color: var(--bad); animation: pulse 1.1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .55; } }

.q-dots { display: flex; gap: .3rem; flex-wrap: wrap; }
.q-dot {
  width: 27px; height: 27px; border-radius: 8px;
  display: grid; place-items: center; font-size: .74rem; font-weight: 700;
  background: var(--surface-3); color: var(--ink-2); transition: all .14s;
}
.q-dot:hover { background: var(--line-2); }
.q-dot.filled { background: var(--primary); color: #fff; }
.q-dot.current { box-shadow: 0 0 0 2px var(--primary); }

/* ---------- داشبورد ---------- */
.dash-grid { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.stat-card {
  display: flex; align-items: center; gap: .9rem; padding: 1.15rem 1.2rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); box-shadow: var(--sh-1);
}
.stat-card__ico {
  width: 44px; height: 44px; border-radius: 13px; flex: none;
  display: grid; place-items: center;
  background: var(--c-soft, var(--primary-soft)); color: var(--c, var(--primary-700));
}
.stat-card b { display: block; font-size: 1.55rem; font-weight: 800; line-height: 1.3; }
.stat-card span { font-size: .82rem; color: var(--muted); }

.badge-grid { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fill, minmax(155px, 1fr)); }
.badge-card {
  text-align: center; padding: 1.1rem .8rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-md); transition: all .18s;
}
.badge-card.earned { border-color: var(--warn); background: color-mix(in srgb, var(--warn-soft) 45%, var(--surface)); }
.badge-card__ico {
  width: 46px; height: 46px; border-radius: 50%; margin: 0 auto .6rem;
  display: grid; place-items: center;
  background: var(--surface-3); color: var(--muted);
}
.badge-card.earned .badge-card__ico {
  background: linear-gradient(140deg, #f5c542, var(--warn)); color: #fff;
  box-shadow: 0 5px 15px rgba(217, 148, 0, .35);
}
.badge-card b { display: block; font-size: .89rem; }
.badge-card span { font-size: .74rem; color: var(--muted); line-height: 1.55; display: block; margin-top: .2rem; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); }
table.data { width: 100%; border-collapse: collapse; font-size: .89rem; min-width: 520px; }
table.data th, table.data td { padding: .7rem .9rem; text-align: start; border-bottom: 1px solid var(--line); }
table.data th { background: var(--surface-2); font-weight: 800; font-size: .82rem; color: var(--ink-2); white-space: nowrap; }
table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover { background: var(--surface-2); }

/* ---------- گواهی ---------- */
.cert {
  position: relative; padding: clamp(1.8rem, 1rem + 3vw, 3.4rem);
  background: var(--surface); border-radius: var(--r-lg);
  box-shadow: var(--sh-3); text-align: center; overflow: hidden;
  border: 1px solid var(--line);
}
.cert::before {
  content: ""; position: absolute; inset: 14px; border-radius: var(--r-md);
  border: 2px solid color-mix(in srgb, var(--primary) 35%, transparent); pointer-events: none;
}
.cert::after {
  content: ""; position: absolute; inset: 20px; border-radius: var(--r-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); pointer-events: none;
}
.cert-inner { position: relative; z-index: 1; }
.cert__seal {
  width: 78px; height: 78px; border-radius: 50%; margin: 0 auto 1.2rem;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(140deg, var(--primary), var(--primary-700));
  box-shadow: 0 10px 26px rgba(43, 169, 212, .4);
}
.cert__name {
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.2rem); font-weight: 800;
  margin: .8rem 0; color: var(--primary-700);
}
.cert__line { color: var(--ink-2); font-size: 1rem; }
.cert__meta {
  display: flex; justify-content: center; gap: 2.2rem; flex-wrap: wrap;
  margin-top: 2rem; padding-top: 1.4rem; border-top: 1px dashed var(--line-2);
  font-size: .84rem; color: var(--muted);
}
.cert__meta b { display: block; color: var(--ink); font-size: .95rem; font-variant-numeric: tabular-nums; }

/* ---------- خبر و فروشگاه ---------- */
.news-card { display: flex; flex-direction: column; overflow: hidden; }
.news-card__art {
  height: 118px; display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-700) 100%);
}
.news-card__art.teacher { background: linear-gradient(135deg, #8257e6, #5b34b8); }
.news-card__art.offline { background: linear-gradient(135deg, #17a673, #0c7550); }
.news-card__art.chem    { background: linear-gradient(135deg, #f2724b, #c9451f); }
.news-card__art.webinar { background: linear-gradient(135deg, #d99400, #a06d00); }
.news-card__art.a11y    { background: linear-gradient(135deg, #e0447a, #a92353); }
.news-card__art svg { width: 40px; height: 40px; opacity: .95; }

.plan {
  display: flex; flex-direction: column; gap: 1rem; padding: 1.6rem 1.4rem;
  background: var(--surface); border: 1.5px solid var(--line);
  border-radius: var(--r-lg); box-shadow: var(--sh-1); position: relative;
}
.plan.featured {
  border-color: var(--primary); box-shadow: var(--sh-3); transform: scale(1.02);
}
.plan.featured::before {
  content: "پیشنهاد ما"; position: absolute; inset-block-start: -13px; inset-inline-start: 50%;
  transform: translateX(50%); padding: .22rem .9rem; border-radius: var(--r-pill);
  background: var(--primary); color: #fff; font-size: .74rem; font-weight: 800;
  box-shadow: 0 4px 12px rgba(43, 169, 212, .38);
}
.plan h3 { font-size: 1.2rem; }
.plan .price { font-size: 1.9rem; font-weight: 800; color: var(--primary-700); line-height: 1.35; }
.plan .price small { font-size: .82rem; font-weight: 600; color: var(--muted); display: block; }
.plan ul { list-style: none; padding: 0; display: grid; gap: .55rem; flex: 1; }
.plan li { display: flex; gap: .5rem; font-size: .89rem; color: var(--ink-2); line-height: 1.7; }
.plan li svg { color: var(--ok); flex: none; margin-top: .32rem; }

/* آکاردئون */
.acc { border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); overflow: hidden; }
.acc + .acc { margin-top: .6rem; }
.acc summary {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem 1.2rem; cursor: pointer; font-weight: 700; font-size: .96rem;
  list-style: none;
}
.acc summary::-webkit-details-marker { display: none; }
.acc summary svg { transition: transform .2s; color: var(--muted); flex: none; }
.acc[open] summary svg { transform: rotate(180deg); }
.acc[open] summary { border-bottom: 1px solid var(--line); }
.acc .acc-body { padding: 1rem 1.2rem; font-size: .91rem; color: var(--ink-2); line-height: 1.95; }

/* ---------- احراز هویت ---------- */
.auth-wrap {
  display: grid; place-items: center; padding-block: clamp(2rem, 1rem + 4vw, 4rem);
}
.auth-card {
  width: min(100%, 460px); padding: 2rem 1.8rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); box-shadow: var(--sh-3);
}
.auth-card h1 { font-size: 1.5rem; margin-bottom: .35rem; }
.auth-card > p { color: var(--ink-2); font-size: .9rem; margin-bottom: 1.4rem; }
.auth-card form { display: grid; gap: .95rem; }
.auth-foot { margin-top: 1.3rem; padding-top: 1.1rem; border-top: 1px solid var(--line); text-align: center; font-size: .88rem; color: var(--ink-2); }

.role-pick { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.role-pick label {
  display: flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .6rem; border: 1.5px solid var(--line); border-radius: var(--r-sm);
  cursor: pointer; font-size: .88rem; font-weight: 600; transition: all .14s;
}
.role-pick input { position: absolute; opacity: 0; }
.role-pick label:has(input:checked) {
  border-color: var(--primary); background: var(--primary-soft); color: var(--primary-700);
}

/* ---------- خطا ---------- */
.err-page { text-align: center; padding-block: clamp(3rem, 2rem + 5vw, 6rem); }
.err-page .code {
  font-size: clamp(4rem, 3rem + 6vw, 8rem); font-weight: 800; line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- واکنش‌گرا ---------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { max-width: 560px; }
  .lab-hero__inner { grid-template-columns: 1fr; }
  .lesson-layout { grid-template-columns: 1fr; }
  .lesson-aside { position: static; }
  .sim-body { grid-template-columns: 1fr; }
  .sim-controls { border-inline-start: 0; border-top: 1px solid var(--line); max-height: none; }
}
@media (max-width: 640px) {
  .lesson-row { grid-template-columns: 38px minmax(0, 1fr); }
  .lesson-row__side { grid-column: 1 / -1; flex-direction: row; align-items: center; justify-content: space-between; }
  .lesson-row__side .bar { flex: 1; width: auto; }
  .plan.featured { transform: none; }
  .exam-top { position: static; }
  .cert__meta { gap: 1.2rem; }
}

/* ---------- انتخاب مدت اشتراک ---------- */
.duration-switch {
  display: inline-flex; gap: .25rem; padding: .3rem; margin-bottom: 1.6rem;
  background: var(--surface-2); border: 1px solid var(--line);
  border-radius: var(--r-pill);
}
.duration-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .5rem 1.1rem; border-radius: var(--r-pill);
  font-size: .9rem; font-weight: 700; color: var(--ink-2);
  transition: all .16s;
}
.duration-btn:hover { color: var(--ink); }
.duration-btn.active {
  background: var(--surface); color: var(--primary-700);
  box-shadow: var(--sh-1);
}
.badge-ok { background: var(--ok-soft); color: var(--ok); }

.plan-capacity {
  display: flex; align-items: center; gap: .4rem;
  padding: .5rem .8rem; border-radius: var(--r-sm);
  background: var(--surface-2); border: 1px dashed var(--line-2);
  font-size: .86rem; font-weight: 700; color: var(--ink-2);
}
.price-value { display: none; }
.price-value.active { display: inline; }

/* ---------- پنل مدیریت ---------- */
.admin-shell { display: grid; grid-template-columns: 224px minmax(0, 1fr); gap: 1.6rem; padding-block: 1.6rem 3rem; }
.admin-nav { position: sticky; top: calc(var(--header-h) + 1rem); align-self: start; display: grid; gap: .25rem; }
.admin-nav a {
  display: flex; align-items: center; gap: .55rem;
  padding: .6rem .8rem; border-radius: var(--r-sm);
  color: var(--ink-2); font-size: .92rem; font-weight: 600;
}
.admin-nav a:hover { background: var(--surface-2); color: var(--ink); }
.admin-nav a.active { background: var(--primary-soft); color: var(--primary-700); }
.admin-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.3rem; }
.admin-head h1 { font-size: 1.45rem; }

.form-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.form-grid .wide { grid-column: 1 / -1; }
.check {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .9rem; font-weight: 600; color: var(--ink-2); cursor: pointer;
}
.check input { width: 17px; height: 17px; accent-color: var(--primary); }

.price-row {
  display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: .8rem;
  align-items: center; padding: .7rem .9rem; border: 1px solid var(--line);
  border-radius: var(--r-sm); background: var(--surface-2);
}
.price-row + .price-row { margin-top: .5rem; }

@media (max-width: 860px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-nav { position: static; grid-auto-flow: column; overflow-x: auto; }
}