/* ============================================================
   Header: har sahifada suzuvchi, to'q ko'k bar, hero bilan bir rangda.
   Bosh sahifada (.site-header--float) rasm ustida yarim shaffof,
   boshqa sahifalarda deyarli to'liq to'q.
   ============================================================ */
.site-header {
    position: fixed;
    top: var(--float-top);
    left: var(--float-inset);
    right: var(--float-inset);
    z-index: 100;
    height: var(--header-height);
    background: rgba(8, 24, 58, 0.96);
    backdrop-filter: saturate(160%) blur(12px);
    -webkit-backdrop-filter: saturate(160%) blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-md);
    color: #ffffff;
    transition: transform 0.4s var(--ease-out),
                background var(--transition-base),
                border-color var(--transition-base),
                box-shadow var(--transition-base);
}

/* Sahifa surilganda to'liq to'q va yengil soya */
.site-header.is-scrolled {
    background: #08183a;
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 24px rgba(4, 12, 40, 0.3);
}

/* Pastga scroll'da bar tepaga chiqib yo'qoladi */
.site-header.is-hidden {
    transform: translateY(calc(-100% - var(--float-top) - 4px));
}

/* Logo va sahifa kontenti bir chiziqda turishi uchun:
   bar chekinishi + 1px chegara + ichki bo'shliq = konteyner bo'shlig'i */
.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    max-width: calc(var(--container-width) - 2 * (var(--float-inset) + 1px));
    padding: 0 calc(var(--container-pad) - var(--float-inset) - 1px);
}

/* Oddiy sahifalarda kontent header ostidan boshlanadi */
main {
    padding-top: calc(var(--header-height) + var(--float-top) + 24px);
}

/* Bosh sahifada hero header ostidan boshlanadi */
body.has-hero main {
    padding-top: 0;
}

/* ---------- Logo ---------- */
.site-header__logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    letter-spacing: -0.3px;
}

/* Logo belgisi qizil: urg'u rangining kichik nuqtasi */
.site-header__mark {
    font-size: 18px;
    line-height: 1;
    color: var(--color-primary);
}

/* ---------- Navigatsiya ---------- */
.site-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    overflow-x: auto;
    scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
    display: none;
}

.site-nav__link {
    position: relative;
    flex-shrink: 0;
    padding: 9px 12px;
    border-radius: var(--radius-xs);
    font-size: var(--text-body-sm);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.76);
    white-space: nowrap;
    transition: color var(--transition-fast);
}

.site-nav__link:hover {
    color: #ffffff;
}

/* Joriy sahifa: oq matn va ostida ingichka chiziq */
.site-nav__link.is-active {
    color: #ffffff;
    font-weight: 500;
}

.site-nav__link.is-active::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 2px;
    height: 1.5px;
    background: currentColor;
}

/* ---------- O'ng tomon: kirish tugmasi va menyu ---------- */
.site-header__side {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

/* Kirish tugmasi: oq chegarali, hero'dagi kabi */
.site-header__login {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-sm);
    background: transparent;
    font-size: var(--text-body-sm);
    font-weight: 500;
    color: #ffffff;
    white-space: nowrap;
    transition: background var(--transition-fast),
                border-color var(--transition-fast),
                color var(--transition-fast);
}

.site-header__login:hover {
    background: #ffffff;
    border-color: #ffffff;
    color: var(--color-ink);
}

.site-header__login:focus-visible {
    outline: 2px solid var(--color-sky);
    outline-offset: 2px;
}

.site-header__login-icon {
    width: 16px;
    height: 16px;
}

/* ---------- Mobil menyu tugmasi ---------- */
.site-header__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.site-header__toggle:hover {
    border-color: #ffffff;
}

.site-header__toggle span {
    display: block;
    width: 16px;
    height: 1.5px;
    margin: 0 auto;
    border-radius: 2px;
    background: #ffffff;
    transition: transform 0.3s var(--ease-out), opacity 0.2s var(--ease-out);
}

.site-header__toggle.is-active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.site-header__toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.site-header__toggle.is-active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ============================================================
   Bosh sahifa: hero rasmi oq fonli, shuning uchun header
   ichki sahifalardagi kabi to'liq navy qoladi
   ============================================================ */
.site-header--float {
    background: rgba(8, 24, 58, 0.96);
}

.site-header--float.is-scrolled {
    background: #08183a;
}

/* ============================================================
   Menyu 1100px dan pastda bar ostida ochiladigan panelga aylanadi
   ============================================================ */
@media (max-width: 1100px) {
    .site-header__toggle {
        display: flex;
    }

    .site-nav {
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--space-sm) 0 var(--space-base);
        background: #0f1a36;
        border: 1px solid rgba(255, 255, 255, 0.16);
        border-radius: var(--radius-md);
        box-shadow: 0 16px 40px rgba(4, 12, 40, 0.4);
        overflow: visible;

        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity 0.25s var(--ease-out),
                    transform 0.25s var(--ease-out),
                    visibility 0.25s;
    }

    .site-nav.is-open {
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .site-nav__link {
        padding: 14px 24px;
        border-radius: 0;
        font-size: var(--text-body);
        color: rgba(255, 255, 255, 0.82);
    }

    .site-nav__link.is-active {
        background: rgba(255, 255, 255, 0.1);
        color: #ffffff;
    }

    .site-nav__link.is-active::after {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --float-top: 12px;
        --header-height: 64px;
    }

    /* Tor ekranda faqat belgi qoladi, matn yashiriladi */
    .site-header__login {
        padding: 9px 12px;
    }

    .site-header__login-text {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header,
    .site-nav,
    .site-header__toggle span {
        transition-duration: 0.01ms;
    }

    .site-header.is-hidden {
        transform: none;
    }
}