/* ============================================================
   HEADER
   ============================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background-color: var(--color-white);
    transition: box-shadow var(--transition);
}

/* خط پایین هدر با accent وسط */
.site-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    right: 0;
    left: 0;
    height: 1px;
    background: linear-gradient(
        to left,
        var(--color-border) 0%,
        var(--color-border) 35%,
        var(--color-primary) 45%,
        var(--color-primary) 55%,
        var(--color-border) 65%,
        var(--color-border) 100%
    );
    z-index: 1;
}

.site-header.is-scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, .06);
}

.site-header__inner {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    height: var(--header-height);
    gap: 0;
}

/* لوگو و اکشن‌ها وسط‌چین عمودی */
.site-header__logo,
.site-header__actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    padding-inline: var(--space-2);
}

/* ── Logo ── */
.logo-text {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.logo-text__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background-color: var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-white);
    flex-shrink: 0;
}

.logo-text__icon svg {
    color: var(--color-white);
}

.logo-text__name {
    display: flex;
    flex-direction: column;
    gap: 2px;
    line-height: 1.2;
}

.logo-text__name strong {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--color-text);
}

.logo-text__name small {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: 400;
}

/* ── Desktop Navigation ── */
.site-header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
    height: 100%;
}

.nav-menu > li {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-menu__link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0 var(--space-4);
    height: 100%;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
    position: relative;
    transition: color var(--transition);
}

/* خط زیر آیتم اکتیو/hover */
.nav-menu__link::after {
    content: '';
    position: absolute;
    bottom: -1px;
    right: 50%;
    left: 50%;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 2px 2px 0 0;
    transition: right var(--transition), left var(--transition);
    z-index: 2;
}

.nav-menu__link:hover::after,
.nav-menu > .current-menu-item > .nav-menu__link::after,
.nav-menu > .current-menu-ancestor > .nav-menu__link::after {
    right: var(--space-3);
    left: var(--space-3);
}

.nav-menu__link:hover,
.nav-menu > .current-menu-item > .nav-menu__link,
.nav-menu > .current-menu-ancestor > .nav-menu__link {
    color: var(--color-primary);
}

.nav-menu__arrow {
    transition: transform var(--transition);
    flex-shrink: 0;
}

/* Dropdown */
.nav-menu > li:hover > .nav-dropdown,
.nav-menu > li:focus-within > .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu > li:hover > .nav-menu__link .nav-menu__arrow,
.nav-menu > li:focus-within > .nav-menu__link .nav-menu__arrow {
    transform: rotate(180deg);
}

.nav-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    list-style: none;
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 10;
}

.nav-menu__link--sub {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: color var(--transition), background-color var(--transition);
}

.nav-menu__link--sub:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* ── Actions ── */
.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.header-cta {
    padding: 10px 20px;
    font-size: var(--font-size-sm);
}

/* ============================================================
   HAMBURGER BUTTON
   ============================================================ */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    background: transparent;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color var(--transition);
}

.hamburger:hover {
    background-color: var(--color-primary-light);
}

.hamburger__bar {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition), width var(--transition);
}

.hamburger.is-open .hamburger__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger.is-open .hamburger__bar:nth-child(2) {
    opacity: 0;
    width: 0;
}
.hamburger.is-open .hamburger__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   MOBILE MENU OVERLAY
   ============================================================ */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 2000;
    pointer-events: none;
    visibility: hidden;
    transition: visibility var(--transition);
}

.mobile-menu.is-open {
    pointer-events: auto;
    visibility: visible;
}

.mobile-menu__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .4);
    opacity: 0;
    transition: opacity 300ms ease;
    backdrop-filter: blur(2px);
}

.mobile-menu.is-open .mobile-menu__backdrop {
    opacity: 1;
}

.mobile-menu__panel {
    position: absolute;
    top: 0;
    right: 0;
    width: min(320px, 88vw);
    height: 100%;
    background: var(--color-white);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 300ms ease;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.mobile-menu.is-open .mobile-menu__panel {
    transform: translateX(0);
}

.mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.logo-text--sm .logo-text__name strong {
    font-size: var(--font-size-base);
}

.mobile-menu__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    transition: background-color var(--transition), color var(--transition);
    border: 1px solid var(--color-border);
}

.mobile-menu__close:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.mobile-menu__nav {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

.mobile-nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav-menu li {
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav-menu li:last-child {
    border-bottom: none;
}

.mobile-nav-menu a {
    display: flex;
    align-items: center;
    padding: var(--space-4) var(--space-2);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition);
}

.mobile-nav-menu a:hover,
.mobile-nav-menu .current-menu-item > a {
    color: var(--color-primary);
}

.mobile-nav-menu .sub-menu {
    padding-right: var(--space-4);
}

.mobile-nav-menu .sub-menu a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding-block: var(--space-3);
}

.mobile-menu__cta {
    padding: var(--space-5) var(--space-6);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

.mobile-menu__cta .btn {
    width: 100%;
    justify-content: center;
}

.w-full { width: 100%; }

.mobile-menu__social {
    padding: var(--space-4) var(--space-6) var(--space-6);
    flex-shrink: 0;
}

/* ============================================================
   SOCIAL LINKS
   ============================================================ */
.social-links {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.social-links__item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}

.social-links__item:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* ============================================================
   BOTTOM NAV — Mobile only
   ============================================================ */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    right: 0;
    left: 0;
    z-index: 1000;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, .06);
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-nav__item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: var(--space-2) var(--space-1);
    color: var(--color-text-muted);
    font-size: 10px;
    font-weight: 500;
    transition: color var(--transition);
    min-height: 56px;
}

.bottom-nav__item:hover,
.bottom-nav__item.is-active {
    color: var(--color-primary);
}

.bottom-nav__item.is-active svg {
    stroke: var(--color-primary);
}

.bottom-nav__item--cta {
    color: var(--color-primary);
    font-weight: 600;
}

.bottom-nav__cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary);
    color: var(--color-white);
    margin-top: -14px;
    box-shadow: 0 4px 16px rgba(109, 142, 127, .4);
    transition: transform var(--transition), box-shadow var(--transition);
}

.bottom-nav__cta-btn svg { stroke: var(--color-white); }

.bottom-nav__item--cta:hover .bottom-nav__cta-btn {
    transform: scale(1.06);
    box-shadow: 0 6px 20px rgba(109, 142, 127, .5);
}

/* ============================================================
   RESPONSIVE — Tablet (≤992)
   ============================================================ */
@media (max-width: 992px) {
    .site-header__nav { display: none; }
    .hamburger { display: flex; }
    .header-cta { display: none; }
}

/* ============================================================
   RESPONSIVE — Mobile (≤576)
   ============================================================ */
@media (max-width: 576px) {
    .bottom-nav { display: flex; }
    body { padding-bottom: calc(56px + env(safe-area-inset-bottom, 0px)); }
    .logo-text__name small { display: none; }
}