:root { --ink:#172333; --muted:#68778a; --blue:#2768df; --line:#dfe7f0; --bg:#f4f7fb; }
* { box-sizing:border-box; }
body { margin:0; background:linear-gradient(135deg,#f4f7fb,#edf2ff); color:var(--ink); font-family:Arial,sans-serif; }
.shell { max-width:920px; margin:auto; padding:70px 24px; }
header { text-align:center; }
.eyebrow { color:var(--blue); font-size:12px; letter-spacing:2px; font-weight:700; }
h1 { font-size:56px; margin:12px 0; letter-spacing:-2px; }
.intro,.muted { color:var(--muted); }
.search-card,.weather-card { background:#fff; border:1px solid var(--line); border-radius:22px; padding:30px; box-shadow:0 18px 50px #253b5d12; }
.search-card { margin-top:35px; }
form { display:flex; gap:12px; }
input { flex:1; border:1px solid var(--line); border-radius:10px; padding:15px; font-size:16px; }
button { border:0; border-radius:10px; padding:0 22px; background:var(--blue); color:#fff; font-weight:700; cursor:pointer; }
.secondary { margin-top:14px; padding:12px 16px; background:#eef4ff; color:var(--blue); }
.error { color:#c33b4b; min-height:20px; }
.weather-card { margin-top:24px; display:grid; grid-template-columns:1fr 180px; gap:10px; }
h2 { font-size:32px; margin:8px 0; }
.temperature { font-size:82px; font-weight:700; letter-spacing:-5px; margin-top:25px; }
.temperature sup { font-size:28px; letter-spacing:0; }
.condition { font-size:20px; }
.icon { font-size:110px; display:flex; align-items:center; justify-content:center; }
.details { grid-column:1 / -1; border-top:1px solid var(--line); padding-top:20px; display:flex; gap:30px; color:var(--muted); }
.details b { color:var(--ink); }
.hidden { display:none; }
footer { text-align:center; color:var(--muted); font-size:13px; margin-top:25px; }
@media(max-width:650px) { h1{font-size:42px} form{flex-direction:column} button{height:48px}.weather-card{grid-template-columns:1fr}.icon{font-size:72px}.details{flex-wrap:wrap} }