/* -------------------------
   Basic page & font setup
   ------------------------- */

:root {
    --bg: #F5F4F6;
    --muted: #DAE3E7;
    --gray: #797270;
    --line: #141514;
    --highlight: #FF9C01;
    --text: #141514;
    --purple: #7E137F;
    --red-orange: #F84314;
}

* { box-sizing: border-box; }

body {
    font-family: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 300;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    margin: 0;
}

/* =========================================
   HEADER & MENU
   ========================================= */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 0; 
    z-index: 9999;
    color: #FFFFFF;            
    mix-blend-mode: difference; 
    
}

/* Desktop Menu */

header .desktopMenu {
    position: fixed;
    top: 20px;
    left: 0;
    right: 0;
    margin: 0 auto; 
    width: 30%;
    min-width: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: .75rem 1.5rem;
    border-radius: 50px;
    z-index: 2;
    background-color: transparent; 

}

header .desktopMenu .linksMenu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
    align-items: center;

}

header .desktopMenu .linksMenu li a {
    letter-spacing: .08rem;
    text-decoration: none;
    font-size: .9em;
    font-weight: 500;
    padding: .3rem .5rem;
    transition: opacity .3s ease;
    text-decoration: none;
    text-transform: uppercase;
    color: inherit;

}

header .desktopMenu .linksMenu li a:hover {
    text-decoration: underline;
    opacity: 0.7;
}

/* Mobile Elements (Hidden on Desktop) */

header .hamburgerBtn, header .mobileOverlay {
    display: none;
}

/* =========================================
   MOBILE MENU (< 900px)
   ========================================= */

@media screen and (max-width: 900px) {

    header { mix-blend-mode: normal;}

    header .desktopMenu { display: none; }

    header .hamburgerBtn {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 40px;
        height: 20px;
        position: fixed;
        top: 30px;
        right: 30px;
        z-index: 4;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        pointer-events: auto;
    }

    header .hamburgerBtn .line {
        width: 100%;
        height: 2px;
        background-color: #FFFFFF;
        mix-blend-mode: difference;
        transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        transform-origin: left;
    }

    /* Active State */
    header .hamburgerBtn.isActive .line1 { transform: rotate(45deg) translate(3px, -4px); }
    header .hamburgerBtn.isActive .line2 { opacity: 0; width: 0; }
    header .hamburgerBtn.isActive .line3 { transform: rotate(-45deg) translate(3px, 4px); }

    /* Overlay */
    header .mobileOverlay {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: var(--line);
        z-index: 3;
        visibility: hidden;
        clip-path: circle(0% at 100% 0%);
        pointer-events: auto;
        mix-blend-mode: normal;
    }

    header .mobileOverlay .overlayNav { width: 100%; text-align: center; }
    
    header .mobileOverlay .overlayNav .overlayLinks {
        list-style: none; padding: 0; margin: 0; 
        display: flex; flex-direction: column; gap: 2rem;
    }
    
    header .mobileOverlay .overlayNav .overlayLinks li { overflow: hidden; }

    header .mobileOverlay .overlayNav .overlayLinks li a {
        display: block;
        font-family: "Inter", sans-serif;
        font-size: 3rem;
        font-weight: 300;
        color: #FFFFFF;
        text-decoration: none;
        text-transform: uppercase;
        letter-spacing: -0.02em;
        transition: color 0.3s ease;
    }

    header .mobileOverlay .overlayNav .overlayLinks li a:hover {
        color: var(--highlight);
        text-decoration: underline;
    }

    header .mobileOverlay .overlayFooter {
        position: absolute; bottom: 40px; width: 100%;
        display: flex; justify-content: space-between; padding: 0 40px;
        font-size: 0.8rem; color: var(--gray);
        text-transform: uppercase; letter-spacing: 0.1em;
    }
}

/* =========================================
   FOOTER
   ========================================= */

footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px 40px;
    z-index: 2;
    color: #FFFFFF;
    mix-blend-mode: difference;
    font-size: 0.8rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

footer .footerGrid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3.5em;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

footer .footerGrid .footerBlock {
    display: flex;
    justify-content: center;
    gap: 20px;
}

footer .footerGrid .footerBlock.links { justify-content: flex-end; }

footer .footerGrid .footerBlock.info { justify-content: flex-start; }

footer .footerGrid .footerBlock.links a {
    color: #FFFFFF;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

footer .footerGrid .footerBlock.links a:hover {
    opacity: 0.6;
    text-decoration: underline;
}

@media screen and (min-width: 768px) {
    footer .footerGrid { grid-template-columns: 1fr 1fr; }
}

@media screen and (max-width: 900px) {
    footer .footerGrid .footerBlock.links,
    footer .footerGrid .footerBlock.info { justify-content: center; }
}