@media (max-width: 760px) {

  /* ── دکمه ورود / ثبت‌نام ──────────────────────────────────── */
  .bk-login {
    font-size: 11px;
    white-space: nowrap;
    padding: 0 9px;
  }

  /* ── سرچ: فقط آیکن نشان داده می‌شود ─────────────────────── */
  /* input و دکمه submit مخفی — فقط span آیکن می‌ماند */
  .bk-search {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    padding: 0;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
    transition: width .28s cubic-bezier(.4,0,.2,1),
                border-color .2s,
                background .2s;
    position: relative;
  }

  .bk-search input[type="search"],
  .bk-search input[type="hidden"] {
    width: 0;
    padding: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s;
  }

  /* آیکن سرچ — کلیک‌پذیر */
  .bk-search span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    color: var(--bk-purple);
    cursor: pointer;
    font-size: 20px;
  }

  /* ── حالت باز شده ─────────────────────────────────────────── */
  .bk-search.is-open {
    width: min(260px, calc(100vw - 130px));
    border-color: var(--bk-purple);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(140, 93, 193, .1);
  }

  .bk-search.is-open input[type="search"] {
    width: 100%;
    opacity: 1;
    pointer-events: auto;
    font-size: 14px;
    padding: 0 8px 0 0;
    transition: opacity .25s .1s;
  }

  .bk-search.is-open span {
    color: var(--bk-purple);
  }
}


/* Header search modal: overrides the former inline/mobile expansion entirely. */
.bk-header .bk-search { display: none !important; }
.bk-header .bk-search-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--bk-border, #eadff1);
  border-radius: 13px;
  background: var(--bk-surface, #fbf9fc);
  color: var(--bk-purple, #7f50b0);
  cursor: pointer;
  transition: color .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease;
  font-size:22px;
}
.bk-header .bk-search-trigger:hover {
  color: #fff;
  border-color: var(--bk-purple, #7f50b0);
  background: var(--bk-purple, #7f50b0);
}
.bk-header .bk-search-trigger:focus-visible,
.bk-search-dialog :focus-visible {
  outline: 3px solid rgba(127, 80, 176, .38);
  outline-offset: 3px;
}
.bk-header .bk-search-trigger svg { width: 19px; height: 19px; display: block; }
.bk-header .bk-search-overlay[hidden] { display: none !important; }
.bk-header .bk-search-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(72px, 16vh, 150px) 18px 24px;
  box-sizing: border-box;
  overflow-y: auto;
  background: rgba(34, 24, 40, .48);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}
.bk-search-dialog {
  position: relative;
  width: min(560px, 100%);
  box-sizing: border-box;
  padding: 34px 32px 30px;
  border: 1px solid var(--bk-border, #eadff1);
  border-radius: 22px;
  background: #fff;
  color: var(--bk-text, #2b2330);
  box-shadow: 0 22px 70px rgba(35, 20, 48, .24);
  direction: rtl;
  text-align: right;
}
.bk-search-dialog h2 {
  margin: 0 38px 22px 0;
  color: var(--bk-text, #2b2330);
  font-size: clamp(20px, 4vw, 25px);
  line-height: 1.5;
  font-weight: 700;
}
.bk-search-close {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--bk-border, #eadff1);
  border-radius: 11px;
  background: var(--bk-surface, #fbf9fc);
  color: var(--bk-muted, #766b7c);
  font-size: 25px;
  line-height: 1;
  cursor: pointer;
}
.bk-search-close:hover { color: var(--bk-purple, #7f50b0); border-color: var(--bk-purple, #7f50b0); }
.bk-search-modal-form {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin: 0;
}
.bk-search-modal-form input[type="search"] {
  flex: 1 1 auto;
  min-width: 0;
  height: 52px;
  box-sizing: border-box;
  padding: 0 16px;
  border: 1px solid var(--bk-border, #eadff1);
  border-radius: 13px;
  background: #fff;
  color: var(--bk-text, #2b2330);
  font: inherit;
  font-size: 16px;
  direction: rtl;
}
.bk-search-modal-form input[type="search"]::placeholder { color: var(--bk-muted, #766b7c); opacity: 1; }
.bk-search-modal-form input[type="search"]:focus { border-color: var(--bk-purple, #7f50b0); outline: 3px solid rgba(127, 80, 176, .16); }
.bk-search-modal-form button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  padding: 0;
  border: 0;
  border-radius: 13px;
  background: var(--bk-purple, #7f50b0);
  color: #fff;
  cursor: pointer;
}
.bk-search-modal-form button[type="submit"]:hover { background: var(--bk-purple-dark, #6f459b); }
.bk-search-modal-form button[type="submit"] svg { width: 20px; height: 20px; }
@media (max-width: 480px) {
  .bk-header .bk-search-trigger { flex-basis: 40px; width: 40px; height: 40px; border-radius: 12px; }
  .bk-search-dialog { padding: 30px 20px 22px; border-radius: 18px; }
  .bk-search-dialog h2 { margin-right: 35px; margin-bottom: 18px; }
  .bk-search-modal-form { gap: 8px; }
  .bk-search-modal-form input[type="search"] { height: 48px; padding-inline: 12px; font-size: 15px; }
  .bk-search-modal-form button[type="submit"] { flex-basis: 48px; width: 48px; height: 48px; }
}