/* GENERAL LAYOUT */
body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    scroll-behavior: smooth;
    font-family: 'Arial', sans-serif;
    color: white;
}

html {
    scroll-behavior: smooth;
}

/* FULLSCREEN BACKGROUND SECTIONS */
.hero {
    position: relative;
    height: 100vh;
    width: 100%;
    background-size: cover;
    background-position: center center;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px;
    text-align: center;
}

/* BACKGROUND IMAGES */
.bg-01 { background-image: url("images/bg-01.jpeg"); }
.bg-02 { background-image: url("images/bg-02.jpeg"); }
.bg-03 { background-image: url("images/bg-03.jpg"); }
.bg-04 { background-image: url("images/bg-04.jpg"); }
.bg-05 { background-image: url("images/bg-05.jpeg"); }

/* OVERLAY CONTENT STYLE */
.overlay-content {
    max-width: 900px;
}

.overlay-content.small-top {
    margin-top: -100px;
}

.overlay-content.small-left {
    text-align: left;
    max-width: 700px;
}

/* SECTION 3 — 2x2 GRID */
.numbers-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
}

.numbers-grid h1 {
    font-size: 48px;
    margin: 0;
}

/* UNIVERSAL TRANSLUCENT CONTENT BOX */
.overlay-box {
    background: rgba(90, 80, 255, 0.55);
    padding: 40px 50px;
    border-radius: 20px;
    max-width: 900px; /* increased for sections 1–3 */
    text-align: left;
    backdrop-filter: blur(4px); /* premium smooth-glass look */
}

.hero .overlay-box {
    text-align: center;
}

.scrollbox {
    max-height: 180px;
    overflow-y: auto;
    padding-right: 10px;
}

/* Scrollbox scrollbar minimal */
.scrollbox::-webkit-scrollbar {
    width: 6px;
}
.scrollbox::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.4);
    border-radius: 10px;
}

h1, h2 {
    font-weight: 300;
}

#header-placeholder {
    width: 100%;
    display: block;
    position: relative;
    z-index: 9999;
}