/* Arvan - سبک عمومی + دارک‌مود */
:root{
  --arvan-bg:#ffffff;
  --arvan-fg:#111827;
  --arvan-muted:#6b7280;
  --arvan-primary:#2563eb;
  --arvan-border:#e5e7eb;
}
.arvan-dark{
  --arvan-bg:#0f172a;
  --arvan-fg:#e5e7eb;
  --arvan-muted:#94a3b8;
  --arvan-primary:#60a5fa;
  --arvan-border:#1f2937;
}
.arvan-modal{font-family:inherit}
.arvan-modal .arvan-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none}
.arvan-modal .arvan-card{position:fixed;inset:auto 50% 10% auto;transform:translateX(50%);width:min(560px,92%);
  background:var(--arvan-bg);color:var(--arvan-fg);border:1px solid var(--arvan-border);border-radius:16px;padding:16px;display:none;z-index:9999;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.arvan-modal.active .arvan-overlay,
.arvan-modal.active .arvan-card{display:block}
.arvan-title{font-weight:700;margin:0 0 10px}
.arvan-option{display:flex;gap:10px;align-items:flex-start;padding:10px;border:1px solid var(--arvan-border);border-radius:12px;margin:10px 0}
.arvan-option input[type=checkbox]{margin-top:4px;min-width:18px}
.arvan-desc{font-size:12px;color:var(--arvan-muted)}
.arvan-text{width:100%;padding:8px;border:1px solid var(--arvan-border);border-radius:10px;background:transparent;color:inherit}
.arvan-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:14px}
.arvan-btn{background:var(--arvan-primary);color:#fff;border:0;border-radius:10px;padding:10px 14px;cursor:pointer}
.arvan-btn.secondary{background:transparent;color:var(--arvan-fg);border:1px solid var(--arvan-border)}
.arvan-trigger{margin-bottom:12px}
.arvan-price-preview{font-weight:600}