:root{
    --bg:#ffffff;
    --surface:#ffffff;
    --surface2:#fafafa;
    --text:#111111;
    --muted:#6b6b6b;
    --border:#e8e8e8;
    --shadow:0 18px 60px rgba(0,0,0,.08);
    --accent:#111111;
    --accentText:#ffffff;
    --radius:28px;
    color-scheme:light;
}

html[data-theme="gray"]{
    --bg:#f3f2ef;
    --surface:#fcfcfc;
    --surface2:#f5f4f2;
    --text:#171717;
    --muted:#6d6d6d;
    --border:#dddddd;
}

html[data-theme="midnight"]{
    --bg:#121315;
    --surface:#1a1c1f;
    --surface2:#202226;
    --text:#f2f2f2;
    --muted:#a3a3a3;
    --border:#2c2f34;
    --accent:#f2f2f2;
    --accentText:#111111;
    --shadow:0 24px 80px rgba(0,0,0,.45);
    color-scheme:dark;
}

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

body{
    background:var(--bg);
    color:var(--text);
    font-family:Inter,sans-serif;
    transition:.35s;
}

.page{
    min-height:100vh;
}

.topbar{
    height:74px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:0 48px;
}

.logo{
    text-decoration:none;
    color:var(--text);
    font-size:34px;
    font-weight:800;
    letter-spacing:-4px;
}

.topbar nav{
    display:flex;
    gap:24px;
}

.topbar nav a{
    text-decoration:none;
    color:var(--muted);
    font-size:14px;
}

.topbar nav a:hover{
    color:var(--text);
}

.upgrade-page{
    max-width:1250px;
    margin:auto;
    padding:70px 25px 90px;
}

.hero{
    text-align:center;
    margin-bottom:70px;
}

.eyebrow{
    color:var(--muted);
    font-size:13px;
    font-weight:700;
    letter-spacing:2px;
    margin-bottom:18px;
}

.hero h1{
    font-size:58px;
    font-weight:800;
    letter-spacing:-3px;
    margin-bottom:18px;
}

.hero p{
    max-width:700px;
    margin:auto;
    color:var(--muted);
    line-height:1.8;
    font-size:18px;
}

.plans{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:28px;
}

.plan{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:40px;
    box-shadow:var(--shadow);
    position:relative;
}

.featured{
    transform:scale(1.03);
    border:2px solid var(--text);
}

.badge{
    position:absolute;
    top:-14px;
    left:50%;
    transform:translateX(-50%);
    background:var(--accent);
    color:var(--accentText);
    padding:7px 16px;
    border-radius:999px;
    font-size:12px;
    font-weight:700;
}

.plan h2{
    font-size:32px;
    margin-bottom:22px;
}

.price{
    font-size:50px;
    font-weight:800;
    letter-spacing:-3px;
    margin-bottom:28px;
}

.price span{
    font-size:18px;
    color:var(--muted);
    font-weight:500;
}

.plan ul{
    list-style:none;
    margin-bottom:36px;
}

.plan li{
    padding:13px 0;
    border-bottom:1px solid var(--border);
    color:var(--muted);
}

.primary,
.secondary{
    width:100%;
    height:58px;
    border-radius:18px;
    font-size:15px;
    font-weight:700;
    cursor:pointer;
    transition:.25s;
}

.primary{
    background:var(--accent);
    color:var(--accentText);
    border:none;
}

.primary:hover{
    transform:translateY(-2px);
}

.secondary{
    background:transparent;
    border:1px solid var(--border);
    color:var(--text);
}

.secondary:hover{
    background:var(--surface2);
}

@media(max-width:980px){

.plans{
    grid-template-columns:1fr;
}

.featured{
    transform:none;
}

.hero h1{
    font-size:42px;
}

}

@media(max-width:600px){

.topbar{
    padding:0 20px;
}

.upgrade-page{
    padding:40px 18px 80px;
}

.hero h1{
    font-size:34px;
}

.hero p{
    font-size:16px;
}

.plan{
    padding:30px;
}

.price{
    font-size:42px;
}

}