/* ============================================================
   GLOBAL RESET & BASE
============================================================ */

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow-x: hidden !important;
}


/* Prevent iOS viewport collapse */
:root {
    --vh: 1vh;
    --header-h: 100px;
}

/* ============================================================
   TYPOGRAPHY SYSTEM
============================================================ */

:root {
    /* Font families */
    --font-heading: "Atkinson Hyperlegible", sans-serif;
    --font-body: "Domine", serif;

    /* Font sizes */
    --fs-xxl: clamp(3rem, 5vw, 5rem);
    --fs-xl: clamp(2.5rem, 4vw, 3.5rem);
    --fs-lg: clamp(1.75rem, 3vw, 2.5rem);
    --fs-md: clamp(1.25rem, 2vw, 1.5rem);
    --fs-base: 1rem;
    --fs-sm: 0.875rem;

    /* Line heights */
    --lh-tight: 1.1;
    --lh-normal: 1.4;
    --lh-loose: 1.6;
}

/* Global typography */
body {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    line-height: var(--lh-loose);
    color: #111;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: var(--lh-tight);
    margin: 0 0 20px 0;
}

h1 { font-size: var(--fs-xxl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }
h5 { font-size: var(--fs-base); }
h6 { font-size: var(--fs-sm); }

/* Navigation font */
#hurdler-main-nav a {
    font-family: var(--font-heading);
}


/* ============================================================
   HEADER — layout + positioning
============================================================ */

#hurdler-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    background: rgba(0,0,0,0);
    z-index: 10000;
    display: flex;
    align-items: center;
    pointer-events: auto;
}

.hurdler-header-inner {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
}

/* LOGO */
.hurdler-logo img {
    height: 40px;
    width: auto;
    display: block;
}

/* DESKTOP NAV */
#hurdler-main-nav {
    margin-left: auto;
}

#hurdler-main-nav .hurdler-menu {
    display: flex;
    gap: 30px;
    margin: 0;
    padding: 0;
    list-style: none;
}

#hurdler-main-nav .hurdler-menu li a {
    color: #00ADEE;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
}

/* HAMBURGER BUTTON (HIDDEN ON DESKTOP) */
.hurdler-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.hurdler-nav-toggle .bar {
    width: 28px;
    height: 3px;
    background: #00ADEE;
    display: block;
    transition: 0.3s ease;
}

/* ACTIVE HAMBURGER STATE */
.hurdler-nav-toggle.is-active .bar:nth-child(1) {
    transform: rotate(45deg) translateY(9px);
}

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

.hurdler-nav-toggle.is-active .bar:nth-child(3) {
    transform: rotate(-45deg) translateY(-9px);
}



/* ============================================================
   RESPONSIVE BEHAVIOR / MOBILE NAV
============================================================ */
@media (max-width: 900px) {

    /* Ensure menu does not clip anything */
    #hurdler-header,
    .hurdler-header-inner {
        overflow: visible !important;
    }

    /* Header padding on mobile */
    .hurdler-header-inner {
        padding: 0 20px;
    }

    /* Fullscreen mobile nav */
    #hurdler-main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        margin: 0;
        padding: 80px 32px 40px;
        box-sizing: border-box;

        background: rgba(4, 12, 20, 0.6);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);

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

        transform: translateX(100%);
        opacity: 0;
        pointer-events: none;

        transition: transform 0.3s ease, opacity 0.3s ease;
        z-index: 9998;
    }

    #hurdler-main-nav.is-open {
        transform: translateX(0);
        opacity: 1;
        pointer-events: auto;
    }

    /* Mobile menu shown vertically */
    #hurdler-main-nav .hurdler-menu {
        flex-direction: column;
        gap: 24px;
        align-items: center;
        padding: 0;
        margin: 0;
    }

    #hurdler-main-nav .hurdler-menu li {
        list-style: none;
    }

    #hurdler-main-nav .hurdler-menu li a {
        color: #ffffff;
    }

    /* ============================================================
       FIXED MOBILE HAMBURGER — GUARANTEED VISIBILITY IN CHROME iOS
    ============================================================ */
    .hurdler-nav-toggle {
        display: flex !important;
        position: fixed !important;

        /* Avoid invalid calc() when env() fails in Chrome */
        top: 20px;
        padding-top: env(safe-area-inset-top, 0px);

        right: 20px;

        z-index: 999999 !important;
        margin: 0 !important;

        transform: none !important;
    }
}



/* ============================================================
   MASTER VIEWPORT — Vertical Scroll Snap Container
============================================================ */

#hurdler-viewport {
    width: 100%;
    height: calc(var(--vh) * 100);
    overflow-y: scroll;
    overflow-x: hidden;

    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}



/* ============================================================
   SECTION MODEL — Fullscreen Sections
============================================================ */

.hs-section {
    width: 100%;
    min-height: calc(var(--vh) * 100);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 40px;
    position: relative;
    box-sizing: border-box;
    overflow: visible;
    scroll-snap-align: start;
}

.hs-inner {
    max-width: 1200px;
    width: 100%;
}