/* ============================================================
   Gym Template — Header / Navigation
   Dark, bold header with uppercase nav links.
   ============================================================ */

.header {
    position: relative;
    z-index: 100;
}

.header-main {
    background-color: var(--color-header_bg);
    color: #fff;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0;
    padding-bottom: 0;
    min-height: 64px;
}

.logo {
    font-family: var(--font-heading), system-ui, sans-serif;
    font-size: 1.5rem;
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1;
}

.logo:hover {
    color: var(--color-accent);
}

.logo-img {
    height: 36px;
    width: auto;
}

/* --- Hamburger toggle --- */

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 1px;
    transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Mobile nav --- */

.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-header_bg);
    flex-direction: column;
    padding: 1rem 1.25rem 1.5rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.nav-menu.nav-open {
    display: flex;
}

.nav-menu a {
    color: rgba(255,255,255,0.85);
    font-family: var(--font-body), system-ui, sans-serif;
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.75rem 0;
    text-decoration: none;
    transition: color 0.2s;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.nav-menu a:hover {
    color: var(--color-accent);
}

.nav-phone {
    color: var(--color-accent) !important;
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* --- Desktop nav --- */

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        align-items: center;
        gap: 0.25rem;
        padding: 0;
        box-shadow: none;
        background: transparent;
    }

    .nav-menu a {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
        min-height: auto;
        position: relative;
    }

    .nav-menu a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0.875rem;
        right: 0.875rem;
        height: 2px;
        background: var(--color-accent);
        transform: scaleX(0);
        transition: transform 0.2s;
    }

    .nav-menu a:hover::after {
        transform: scaleX(1);
    }

    .nav-phone {
        margin-top: 0;
        margin-left: 0.5rem;
        padding-top: 0.5rem;
        border-top: none;
        border-left: 1px solid rgba(255,255,255,0.15);
        padding-left: 1.25rem;
    }

    .nav-phone::after {
        display: none;
    }
}

@media (min-width: 1024px) {
    .header-inner {
        min-height: 72px;
    }

    .logo {
        font-size: 1.75rem;
    }

    .nav-menu a {
        font-size: 0.875rem;
        padding: 0.5rem 1rem;
    }
}