/* ============================================================
   rd-base.css — پایهٔ ریدیزاین ۱۴۰۸ (رسام)
   لایهٔ اجزای مشترک روی توکن‌های _tokens.css (--ab-*). پیشوند rd- تا با
   ۱۸۰۰ قاعدهٔ site.css برخورد نکند. فقط خاصیت‌های منطقی (inline/block)
   تا RTL و LTR یکی بمانند. هیچ فونت تازه‌ای بار نمی‌شود.
   مرجع سبک: کارت سفید، حاشیهٔ نرم، فضای سخاوتمند (ایران‌سرور، ایرانیکارت).
   ============================================================ */

:root {
  --rd-navy: var(--ab-brand-navy, #032c72);
  --rd-navy-soft: var(--ab-brand-navy-soft, #e8eefb);
  --rd-cyan: var(--ab-brand-cyan, #6ee7ff);
  --rd-cyan-ink: var(--ab-brand-cyan-ink, #0b5f72);
  --rd-amber: var(--ab-brand-amber, #f4b26b);
  --rd-amber-ink: var(--ab-brand-amber-ink, #7a4a0a);
  --rd-ink: var(--ab-ink, #111827);
  --rd-muted: var(--ab-muted, #475467);
  --rd-bg: var(--ab-bg, #ffffff);
  --rd-tint: var(--ab-bg-alt, #f5f7fb);
  --rd-border: var(--ab-border, #e4e8f0);
  --rd-primary: var(--ab-primary, #1d4ed8);
  --rd-primary-dark: var(--ab-primary-dark, #1e40af);
  --rd-radius: 18px;
  --rd-radius-sm: 12px;
  --rd-shadow: 0 1px 2px rgba(3, 44, 114, .06), 0 12px 32px -16px rgba(3, 44, 114, .18);
  --rd-shadow-hover: 0 2px 4px rgba(3, 44, 114, .08), 0 24px 48px -20px rgba(3, 44, 114, .28);
  --rd-gap: clamp(1rem, 2.5vw, 1.75rem);
  --rd-section: clamp(3rem, 7vw, 5.5rem);
  --rd-ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- چیدمان ---------- */
.rd-section { padding-block: var(--rd-section); }
.rd-section-tint { background: var(--rd-tint); }
.rd-section-navy { background: var(--rd-navy); color: #fff; }
.rd-section-navy .rd-kicker { color: var(--rd-cyan); }
.rd-section-navy .rd-lead, .rd-section-navy .rd-muted { color: rgba(255, 255, 255, .78); }
.rd-narrow { max-width: 760px; margin-inline: auto; }
.rd-center { text-align: center; }
.rd-head { margin-block-end: clamp(1.5rem, 4vw, 2.75rem); }
.rd-head h1, .rd-head h2 { margin: 0 0 .6rem; line-height: 1.25; letter-spacing: -.01em; }
.rd-head h1 { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3.1rem); font-weight: 800; }
.rd-head h2 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem); font-weight: 800; }
.rd-kicker {
  display: inline-flex; align-items: center; gap: .45rem; margin-block-end: .9rem;
  font-size: .85rem; font-weight: 700; color: var(--rd-cyan-ink); letter-spacing: .02em;
}
.rd-kicker::before { content: ""; inline-size: .55rem; block-size: .55rem; border-radius: 50%; background: var(--rd-amber); }
.rd-lead { font-size: clamp(1.02rem, .95rem + .4vw, 1.2rem); line-height: 1.85; color: var(--rd-muted); margin: 0; }
.rd-muted { color: var(--rd-muted); }

.rd-grid { display: grid; gap: var(--rd-gap); grid-template-columns: repeat(var(--rd-cols, 3), minmax(0, 1fr)); }
.rd-grid-2 { --rd-cols: 2; }
.rd-grid-4 { --rd-cols: 4; }
.rd-split { display: grid; gap: clamp(1.5rem, 5vw, 4rem); grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); align-items: center; }
@media (max-width: 991px) {
  .rd-grid-4 { --rd-cols: 2; }
  .rd-split { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 639px) {
  .rd-grid, .rd-grid-2, .rd-grid-4 { --rd-cols: 1; }
}

/* ---------- هیرو ---------- */
.rd-hero { position: relative; overflow: hidden; padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 4.5rem); background: linear-gradient(180deg, var(--rd-navy-soft) 0%, var(--rd-bg) 100%); }
.rd-hero::after {
  content: ""; position: absolute; inset-inline-end: -12vw; inset-block-start: -18vw; inline-size: 44vw; block-size: 44vw;
  border-radius: 50%; background: radial-gradient(closest-side, rgba(110, 231, 255, .35), transparent 70%); pointer-events: none;
}
.rd-hero .ab-container { position: relative; }
.rd-hero h1 { font-size: clamp(2rem, 1.3rem + 3vw, 3.4rem); font-weight: 800; line-height: 1.2; margin: 0 0 1rem; color: var(--rd-navy); }
.rd-hero h1 em { font-style: normal; color: var(--rd-primary); }
.rd-hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-block-start: 1.6rem; }
.rd-hero-meta { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; margin-block-start: 1.25rem; padding: 0; list-style: none; color: var(--rd-muted); font-size: .92rem; }
.rd-hero-meta li { display: inline-flex; align-items: center; gap: .4rem; }
.rd-hero-meta li::before { content: "✓"; color: var(--rd-cyan-ink); font-weight: 800; }
.rd-hero-art { display: flex; justify-content: center; }
.rd-hero-art img, .rd-hero-art svg { inline-size: 100%; max-inline-size: 520px; block-size: auto; }

/* ---------- کارت ---------- */
.rd-card {
  background: var(--rd-bg); border: 1px solid var(--rd-border); border-radius: var(--rd-radius);
  padding: clamp(1.25rem, 2.5vw, 1.75rem); box-shadow: var(--rd-shadow);
  transition: transform .25s var(--rd-ease), box-shadow .25s var(--rd-ease), border-color .25s;
}
.rd-card:hover, .rd-card:focus-within { transform: translateY(-3px); box-shadow: var(--rd-shadow-hover); border-color: color-mix(in srgb, var(--rd-cyan) 55%, var(--rd-border)); }
.rd-card h3 { margin: .25rem 0 .5rem; font-size: 1.12rem; font-weight: 800; color: var(--rd-navy); }
.rd-card p { margin: 0; color: var(--rd-muted); line-height: 1.8; }
.rd-card-link { display: block; color: inherit; text-decoration: none; }
.rd-card-link:hover h3 { color: var(--rd-primary); }
.rd-card-more { display: inline-flex; align-items: center; gap: .35rem; margin-block-start: .9rem; font-weight: 700; color: var(--rd-primary); text-decoration: none; }
.rd-card-more::after { content: "←"; transition: transform .2s; }
[dir="ltr"] .rd-card-more::after { content: "→"; }
.rd-card-link:hover .rd-card-more::after, .rd-card-more:hover::after { transform: translateX(-4px); }
[dir="ltr"] .rd-card-link:hover .rd-card-more::after { transform: translateX(4px); }
.rd-icon {
  display: inline-grid; place-items: center; inline-size: 52px; block-size: 52px; border-radius: 14px;
  background: var(--rd-navy-soft); color: var(--rd-navy); margin-block-end: .9rem;
}
.rd-icon svg { inline-size: 26px; block-size: 26px; }
.rd-icon-cyan { background: color-mix(in srgb, var(--rd-cyan) 28%, #fff); color: var(--rd-cyan-ink); }
.rd-icon-amber { background: color-mix(in srgb, var(--rd-amber) 30%, #fff); color: var(--rd-amber-ink); }

/* ---------- نشان و برچسب ---------- */
.rd-badge {
  display: inline-flex; align-items: center; gap: .35rem; padding: .3rem .7rem; border-radius: 999px;
  font-size: .8rem; font-weight: 700; background: var(--rd-navy-soft); color: var(--rd-navy); line-height: 1.4;
}
.rd-badge-cyan { background: color-mix(in srgb, var(--rd-cyan) 30%, #fff); color: var(--rd-cyan-ink); }
.rd-badge-amber { background: color-mix(in srgb, var(--rd-amber) 32%, #fff); color: var(--rd-amber-ink); }
.rd-badge-ok { background: #e4f7ec; color: #136c3a; }

/* ---------- دکمه‌ها (مکمل .ab-btn) ---------- */
.rd-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-block-size: 48px; padding: .7rem 1.4rem; border-radius: 999px; border: 1.5px solid transparent;
  font-weight: 800; font-size: 1rem; text-decoration: none; cursor: pointer; line-height: 1.2;
  transition: transform .18s var(--rd-ease), box-shadow .18s, background .18s, color .18s;
}
.rd-btn:hover { transform: translateY(-1px); }
.rd-btn:active { transform: translateY(0); }
.rd-btn-primary { background: var(--rd-primary); color: #fff; box-shadow: 0 10px 24px -12px rgba(29, 78, 216, .7); }
.rd-btn-primary:hover { background: var(--rd-primary-dark); color: #fff; }
.rd-btn-ghost { background: transparent; color: var(--rd-navy); border-color: var(--rd-border); }
.rd-btn-ghost:hover { border-color: var(--rd-navy); background: var(--rd-navy-soft); }
.rd-btn-light { background: #fff; color: var(--rd-navy); }
.rd-btn-light:hover { background: color-mix(in srgb, var(--rd-cyan) 25%, #fff); }
.rd-btn-sm { min-block-size: 40px; padding: .45rem 1rem; font-size: .92rem; }
.rd-btn-block { inline-size: 100%; }

/* ---------- آمار و اعتماد ---------- */
.rd-stats { display: grid; gap: var(--rd-gap); grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.rd-stat { text-align: center; padding: 1.1rem .75rem; border-radius: var(--rd-radius-sm); background: var(--rd-bg); border: 1px solid var(--rd-border); }
.rd-stat strong { display: block; font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.3rem); font-weight: 800; color: var(--rd-navy); line-height: 1.1; }
.rd-stat span { display: block; margin-block-start: .35rem; color: var(--rd-muted); font-size: .92rem; }
.rd-trust { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 1rem 2.25rem; padding-block: 1.25rem; opacity: .85; }
.rd-trust img { block-size: 32px; inline-size: auto; filter: grayscale(1); opacity: .75; transition: .2s; }
.rd-trust img:hover { filter: none; opacity: 1; }

/* ---------- گام‌ها ---------- */
.rd-steps { counter-reset: rd-step; display: grid; gap: var(--rd-gap); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); padding: 0; margin: 0; list-style: none; }
.rd-steps li { position: relative; padding: 1.25rem 1.25rem 1.25rem; padding-inline-start: 4.25rem; background: var(--rd-bg); border: 1px solid var(--rd-border); border-radius: var(--rd-radius-sm); }
.rd-steps li::before {
  counter-increment: rd-step; content: counter(rd-step, persian);
  position: absolute; inset-inline-start: 1.1rem; inset-block-start: 1.1rem; inline-size: 2.25rem; block-size: 2.25rem;
  display: grid; place-items: center; border-radius: 50%; background: var(--rd-navy); color: var(--rd-cyan); font-weight: 800;
}
[lang="en"] .rd-steps li::before, [lang="tr"] .rd-steps li::before { content: counter(rd-step); }
[lang="ar"] .rd-steps li::before { content: counter(rd-step, arabic-indic); }
.rd-steps h3 { margin: 0 0 .35rem; font-size: 1.05rem; font-weight: 800; color: var(--rd-navy); }
.rd-steps p { margin: 0; color: var(--rd-muted); line-height: 1.75; }

/* ---------- پرسش‌های پرتکرار ---------- */
.rd-faq { display: grid; gap: .75rem; }
.rd-faq details { background: var(--rd-bg); border: 1px solid var(--rd-border); border-radius: var(--rd-radius-sm); padding: 0; overflow: hidden; }
.rd-faq summary { list-style: none; cursor: pointer; padding: 1rem 1.25rem; padding-inline-end: 3rem; font-weight: 700; color: var(--rd-navy); position: relative; min-block-size: 48px; }
.rd-faq summary::-webkit-details-marker { display: none; }
.rd-faq summary::after {
  content: "+"; position: absolute; inset-inline-end: 1rem; inset-block-start: 50%; translate: 0 -50%;
  inline-size: 1.75rem; block-size: 1.75rem; display: grid; place-items: center; border-radius: 50%;
  background: var(--rd-navy-soft); color: var(--rd-navy); font-weight: 800; transition: transform .2s var(--rd-ease);
}
.rd-faq details[open] summary::after { transform: rotate(45deg); }
.rd-faq details[open] summary { border-block-end: 1px solid var(--rd-border); }
.rd-faq .rd-faq-body { padding: 1rem 1.25rem 1.25rem; color: var(--rd-muted); line-height: 1.85; }
.rd-faq .rd-faq-body p { margin: 0 0 .6rem; }
.rd-faq .rd-faq-body p:last-child { margin: 0; }

/* ---------- پلن و قیمت ---------- */
.rd-plans { display: grid; gap: var(--rd-gap); grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); align-items: stretch; }
.rd-plan { position: relative; display: flex; flex-direction: column; gap: 1rem; padding: clamp(1.4rem, 2.5vw, 2rem); background: var(--rd-bg); border: 1.5px solid var(--rd-border); border-radius: var(--rd-radius); box-shadow: var(--rd-shadow); }
.rd-plan-featured { border-color: var(--rd-primary); box-shadow: 0 24px 56px -24px rgba(29, 78, 216, .45); }
.rd-plan-flag { position: absolute; inset-block-start: -.85rem; inset-inline-start: 1.25rem; }
.rd-plan h3 { margin: 0; font-size: 1.2rem; font-weight: 800; color: var(--rd-navy); }
.rd-plan-desc { margin: 0; color: var(--rd-muted); min-block-size: 2.8em; line-height: 1.7; }
.rd-price { display: flex; align-items: baseline; gap: .35rem; flex-wrap: wrap; }
.rd-price strong { font-size: clamp(1.8rem, 1.4rem + 1.4vw, 2.5rem); font-weight: 800; color: var(--rd-navy); line-height: 1; }
.rd-price span { color: var(--rd-muted); font-size: .92rem; }
.rd-price del { color: var(--rd-muted); font-size: .95rem; opacity: .7; }
.rd-plan ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.rd-plan li { display: flex; gap: .55rem; align-items: flex-start; line-height: 1.6; color: var(--rd-ink); }
.rd-plan li::before { content: "✓"; flex: none; inline-size: 1.35rem; block-size: 1.35rem; display: grid; place-items: center; border-radius: 50%; background: color-mix(in srgb, var(--rd-cyan) 30%, #fff); color: var(--rd-cyan-ink); font-size: .8rem; font-weight: 800; margin-block-start: .15rem; }
.rd-plan li.rd-no::before { content: "–"; background: var(--rd-tint); color: var(--rd-muted); }
.rd-plan li.rd-no { color: var(--rd-muted); }
.rd-plan .rd-btn { margin-block-start: auto; }

/* ---------- جدول مقایسه ---------- */
.rd-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--rd-border); border-radius: var(--rd-radius-sm); background: var(--rd-bg); }
.rd-table { inline-size: 100%; border-collapse: collapse; min-inline-size: 560px; font-size: .95rem; }
.rd-table th, .rd-table td { padding: .85rem 1rem; text-align: start; border-block-end: 1px solid var(--rd-border); vertical-align: top; }
.rd-table thead th { background: var(--rd-tint); color: var(--rd-navy); font-weight: 800; position: sticky; inset-block-start: 0; }
.rd-table tbody tr:last-child td { border-block-end: 0; }
.rd-table tbody tr:hover td { background: color-mix(in srgb, var(--rd-tint) 60%, #fff); }
.rd-table .rd-yes { color: #136c3a; font-weight: 800; }
.rd-table .rd-no { color: var(--rd-muted); }

/* ---------- نوار فراخوان ---------- */
.rd-cta { position: relative; overflow: hidden; border-radius: calc(var(--rd-radius) + 6px); background: var(--rd-navy); color: #fff; padding: clamp(2rem, 5vw, 3.5rem); display: grid; gap: 1.25rem; grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
.rd-cta::before { content: ""; position: absolute; inset-inline-end: -8rem; inset-block-end: -10rem; inline-size: 22rem; block-size: 22rem; border-radius: 50%; background: radial-gradient(closest-side, rgba(110, 231, 255, .35), transparent 72%); pointer-events: none; }
.rd-cta h2 { margin: 0 0 .5rem; font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2rem); font-weight: 800; }
.rd-cta p { margin: 0; color: rgba(255, 255, 255, .8); line-height: 1.8; }
.rd-cta-actions { display: flex; flex-wrap: wrap; gap: .75rem; position: relative; }
@media (max-width: 767px) { .rd-cta { grid-template-columns: minmax(0, 1fr); } }

/* ---------- نوار اعلان و نکته ---------- */
.rd-note { display: flex; gap: .75rem; align-items: flex-start; padding: 1rem 1.15rem; border-radius: var(--rd-radius-sm); background: var(--rd-navy-soft); color: var(--rd-navy); line-height: 1.75; border-inline-start: 4px solid var(--rd-primary); }
.rd-note-amber { background: color-mix(in srgb, var(--rd-amber) 22%, #fff); color: var(--rd-amber-ink); border-inline-start-color: var(--rd-amber); }
.rd-note-ok { background: #e4f7ec; color: #136c3a; border-inline-start-color: #1f9d55; }

/* ---------- فهرست تیک‌دار ---------- */
.rd-checks { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.rd-checks li { display: flex; gap: .6rem; align-items: flex-start; line-height: 1.7; }
.rd-checks li::before { content: "✓"; flex: none; inline-size: 1.4rem; block-size: 1.4rem; display: grid; place-items: center; border-radius: 50%; background: color-mix(in srgb, var(--rd-cyan) 30%, #fff); color: var(--rd-cyan-ink); font-size: .8rem; font-weight: 800; margin-block-start: .15rem; }

/* ---------- نان‌خرده ---------- */
.rd-crumbs { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 1rem; padding: 0; list-style: none; font-size: .88rem; color: var(--rd-muted); }
.rd-crumbs li + li::before { content: "/"; margin-inline-end: .4rem; opacity: .5; }
.rd-crumbs a { color: inherit; text-decoration: none; }
.rd-crumbs a:hover { color: var(--rd-primary); }

/* ---------- تصویر و قاب ---------- */
.rd-frame { border-radius: var(--rd-radius); overflow: hidden; border: 1px solid var(--rd-border); box-shadow: var(--rd-shadow); background: var(--rd-bg); }
.rd-frame img { display: block; inline-size: 100%; block-size: auto; }

/* ---------- دسترس‌پذیری و حرکت ---------- */
.rd-btn:focus-visible, .rd-card-link:focus-visible, .rd-faq summary:focus-visible, .rd-crumbs a:focus-visible, .rd-card-more:focus-visible {
  outline: 3px solid var(--rd-cyan); outline-offset: 3px; border-radius: 10px;
}
.rd-sr { position: absolute; inline-size: 1px; block-size: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (prefers-reduced-motion: reduce) {
  .rd-card, .rd-btn, .rd-card-more::after, .rd-faq summary::after { transition: none; }
  .rd-card:hover, .rd-btn:hover { transform: none; }
}
@media print {
  .rd-hero::after, .rd-cta::before { display: none; }
  .rd-card, .rd-plan { box-shadow: none; }
}