/* ============================================================
   Header + off-canvas drawer
   ============================================================ */
.bir-header {
	position: sticky; top: 0; z-index: 1000;
	background: #fff;
	box-shadow: 0 2px 10px rgba(26,32,44,.06);
}
.bir-header__inner {
	display: flex; align-items: center; justify-content: space-between;
	gap: 24px; min-height: var(--bir-header-height);
	padding-block: 12px;
}
.bir-header__logo { flex: 0 0 auto; display: flex; align-items: center; }
.bir-header__logo img { width: auto; height: 64px; max-height: 64px; }

.bir-header__actions { display: flex; align-items: center; gap: 22px; }
.bir-header__contact { display: flex; align-items: center; gap: 20px; }

.bir-header__phone {
	display: inline-flex; align-items: center; gap: 8px;
	color: var(--bir-text-strong); font-weight: 600; font-size: .92rem;
}
.bir-header__phone:hover { color: var(--bir-primary); }
.bir-header__phone-icon { width: 16px; height: 16px; color: var(--bir-primary); }
.bir-header__quote { padding: 11px 22px; font-size: .88rem; }

/* Burger */
.bir-burger {
	display: inline-flex; align-items: center; gap: 10px;
	background: none; border: 0; cursor: pointer;
	color: var(--bir-text-strong); font-family: var(--bir-font); font-weight: 600; font-size: .95rem;
	padding: 6px 4px;
}
.bir-burger__bars { display: inline-flex; flex-direction: column; gap: 4px; width: 24px; }
.bir-burger__bars span { display: block; height: 2px; background: var(--bir-text-strong); border-radius: 2px; transition: transform .25s ease, opacity .2s ease; }
.bir-burger[aria-expanded="true"] .bir-burger__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.bir-burger[aria-expanded="true"] .bir-burger__bars span:nth-child(2) { opacity: 0; }
.bir-burger[aria-expanded="true"] .bir-burger__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---- Drawer ---- */
.bir-drawer { position: fixed; inset: 0; z-index: 2000; visibility: hidden; }
.bir-drawer.is-open { visibility: visible; }
.bir-drawer__overlay {
	position: absolute; inset: 0; z-index: 1; background: rgba(15,23,42,.55);
	opacity: 0; transition: opacity .3s ease;
}
.bir-drawer.is-open .bir-drawer__overlay { opacity: 1; }
.bir-drawer__panel {
	position: absolute; top: 0; right: 0; height: 100%; z-index: 2;
	width: min(420px, 88vw); background: #fff;
	transform: translateX(100%); transition: transform .32s cubic-bezier(.4,0,.2,1);
	display: flex; flex-direction: column;
	box-shadow: -12px 0 40px rgba(15,23,42,.2);
	overflow-y: auto;
}
.bir-drawer.is-open .bir-drawer__panel { transform: translateX(0); }

.bir-drawer__head {
	display: flex; align-items: center; justify-content: space-between;
	padding: 20px 24px; border-bottom: 1px solid var(--bir-border);
}
.bir-drawer__title { font-weight: 700; font-size: 1.1rem; color: var(--bir-text-strong); text-transform: uppercase; letter-spacing: .05em; }
.bir-drawer__close { background: none; border: 0; cursor: pointer; color: var(--bir-text-strong); padding: 4px; }
.bir-drawer__close svg { width: 26px; height: 26px; }

.bir-drawer__nav { flex: 1 1 auto; padding: 12px 0; }
.bir-menu, .bir-submenu { list-style: none; margin: 0; padding: 0; }
.bir-menu-item { border-bottom: 1px solid #f0f2f5; position: relative; }
.bir-menu-link {
	display: block; padding: 14px 24px; color: var(--bir-text-strong);
	font-weight: 600; font-size: 1rem;
}
.bir-menu-link:hover { color: var(--bir-primary); background: var(--bir-bg-light); }

.bir-submenu-toggle {
	position: absolute; top: 4px; right: 12px;
	width: 40px; height: 40px; background: none; border: 0; cursor: pointer;
	color: var(--bir-text-muted); display: inline-flex; align-items: center; justify-content: center;
}
.bir-submenu-toggle svg { width: 18px; height: 18px; transition: transform .25s ease; }
.bir-menu-item.is-open > .bir-submenu-toggle svg { transform: rotate(180deg); }

.bir-submenu { max-height: 0; overflow: hidden; background: var(--bir-bg-light); transition: max-height .3s ease; }
.bir-menu-item.is-open > .bir-submenu { max-height: 1200px; }
.bir-submenu .bir-menu-link { padding-left: 40px; font-weight: 500; font-size: .95rem; }
.bir-submenu .bir-submenu .bir-menu-link { padding-left: 56px; }

.bir-drawer__cta { display: grid; gap: 12px; padding: 20px 24px; border-top: 1px solid var(--bir-border); }
.bir-drawer__cta .bir-btn { width: 100%; justify-content: center; }

body.bir-drawer-open { overflow: hidden; }

/* ---- Responsive ---- */
@media (max-width: 860px) {
	.bir-header__contact .bir-header__phone span { display: none; }
	.bir-header__quote { display: none; }
	.bir-header__logo img { height: 52px; }
	.bir-burger__label { display: none; }
}
@media (max-width: 520px) {
	.bir-header__contact { gap: 12px; }
}