@import url("variables.css");

/* ========================================== HEADER ========================================== */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    height: 80px;
    z-index: 1000;
    transition: .35s ease;
}

.site-header.scrolled {
    background: rgba(5, 5, 5, .9);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .4);
}

/* ========================================== NAVIGATION ========================================== */
.nav {
    width: min(92%, 1400px);
    height: 80px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--heading-font);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: .25em;
    color: white;
    transition: var(--transition);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-menu a {
    position: relative;
    text-transform: uppercase;
    font-size: .9rem;
    letter-spacing: .18em;
    color: white;
    padding: .5rem 0;
}

.nav-toggle {
    border: none;
}

/* ========================================== UNDERLINE ANIMATION ========================================== */
.nav-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 2px;
    background: var(--yellow);
    transform: scaleX(0);
    transform-origin: left;
    transition: .3s;
}

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

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

/* ========================================== BUTTON ========================================== */
.nav-button {
    padding: .85rem 1.6rem;
    border: 2px solid var(--yellow);
    color: var(--yellow);
    border-radius: 999px;
    transition: var(--transition);
    font-weight: 600;
}

.nav-button:hover {
    background: var(--yellow);
    color: black;
}

/* ========================================== MOBILE TOGGLE ========================================== */
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    cursor: pointer;
    background: none;
    border: none;
}

.menu-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    margin: 6px auto;
    background: white;
    transition: .35s;
}

/* Animated hamburger */
.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ========================================== MOBILE NAV ========================================== */

@media (max-width: 900px) {

    body.menu-open {
        overflow: hidden;
    }

    .nav-toggle {
        position: relative;
        z-index: 10001;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        padding: 0;
        border: none;
        background: transparent;
        color: inherit;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    .nav-toggle span {
        position: absolute;
        width: 26px;
        height: 2px;
        background: currentColor;
        transform-origin: center;
        transition: transform .25s ease, opacity .2s ease;
    }

    .nav-toggle span:nth-child(1) {
        transform: translateY(-7px);
    }

    .nav-toggle span:nth-child(2) {
        transform: translateY(0);
    }

    .nav-toggle span:nth-child(3) {
        transform: translateY(7px);
    }

    .nav-toggle.is-active span:nth-child(1) {
        transform: rotate(45deg);
    }

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

    .nav-toggle.is-active span:nth-child(3) {
        transform: rotate(-45deg);
    }

    .nav-menu {
        position: fixed !important;
        inset: 0 !important;
        z-index: 10000 !important;

        display: flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;

        width: 100vw !important;
        height: 100dvh !important;
        min-height: 100vh;

        margin: 0 !important;
        padding: 90px 30px 40px !important;

        background: #050505 !important;

        opacity: 0;
        visibility: hidden;
        pointer-events: none;

        transform: translateY(-12px);
        transition:
            opacity .25s ease,
            transform .25s ease,
            visibility 0s linear .25s;
    }

    .nav-menu.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
        transition:
            opacity .25s ease,
            transform .25s ease;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu li {
        display: block;
        width: 100%;
        margin: 0;
        text-align: center;
    }

    .nav-menu a {
        display: block;
        padding: 12px 20px;
        font-size: clamp(1.5rem, 6vw, 2.5rem);
        line-height: 1.15;
    }
}

@media (prefers-reduced-motion: reduce) {
    .nav-menu,
    .nav-toggle span {
        transition: none !important;
    }
}