* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

html, body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

/* ── NAVBAR ── */
.headcontainer {
    width: 100vw;
    height: 10vh;
    padding: 0 40px;
    overflow: hidden;
}

.img,
.buttoncontainer,
.user {
    display: inline-block;
    vertical-align: middle;
    height: 10vh;
    line-height: 10vh;
}

.img { width: 10vw; }

.img img {
    width: 80px;
    vertical-align: middle;
}

.buttoncontainer { width: 62vw; text-align: center; }

.buttoncontainer a {
    display: inline-block;
    text-decoration: none;
    color: gray;
    font-size: 18px;
    margin: 0 15px;
    font-family: sans-serif;
}

.buttoncontainer a:hover {
    color: rgb(36, 160, 237);
}

.user { width: 14vw; text-align: right; }

.user a {
    display: inline-block;
    text-decoration: none;
    color: rgb(78, 123, 141);
    background-color: rgb(186, 223, 236);
    font-size: 16px;
    padding: 8px 18px;
    border-radius: 8px;
    font-family: sans-serif;
    line-height: normal;
    vertical-align: middle;
}

.user a:hover {
    background-color: rgb(36, 160, 237);
    color: white;
}

/* ── HERO SECTION ── */
.content {
    width: 100vw;
    height: 90vh;
    overflow: hidden;
    position: relative;
}

/* LEFT div */
.left {
    float: left;
    width: 45vw;
    height: 90vh;
    padding: 6vh 3vw 0 5vw;
    overflow: hidden;
}

.left h1 {
    font-size: 3.2vw;
    font-family: sans-serif;
    line-height: 1.2;
}

.left h1 span {
    color: skyblue;
}

.left p {
    color: gray;
    font-size: 1.1vw;
    margin-top: 2.5vh;
    font-family: sans-serif;
    line-height: 1.6;
}

.left a {
    display: inline-block;
    margin-top: 3vh;
    text-decoration: none;
    color: white;
    background-color: rgb(36, 160, 237);
    font-size: 1vw;
    padding: 1.2vh 2vw;
    border-radius: 10px;
    font-family: sans-serif;
}

.left a:hover {
    opacity: 0.85;
}

/* RIGHT div — image */
.right {
    float: right;
    width: 55vw;
    height: 90vh;
    overflow: hidden;
    position: relative;
}

.right img {
    position: absolute;
    top: 5vh;
    left: 2vw;
    width: 88%;
    height: 80vh;
    object-fit: cover;
    border-radius: 12px;
}