:root {
    --bg: #eef4fb;
    --card: #ffffff;
    --text: #1d2733;
    --muted: #5d6b7a;
    --accent: #2f7de1;
    --accent-soft: #e3effd;
    --border: #d6e0ea;
    --error: #c0392b;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #121820;
        --card: #1c2430;
        --text: #e6edf3;
        --muted: #9aa8b6;
        --accent: #5aa0ff;
        --accent-soft: #22324a;
        --border: #2d3947;
        --error: #ff7b6b;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.hero {
    text-align: center;
    padding: 2.5rem 1rem 1.5rem;
}
.hero h1 { margin: 0; font-size: 2rem; }
.hero p { margin: .25rem 0 0; color: var(--muted); }

main {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 1rem 2rem;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.search {
    display: grid;
    grid-template-columns: 2fr 1.5fr;
    gap: 1rem;
}
.field { display: flex; flex-direction: column; gap: .35rem; }
.field label { font-weight: 600; font-size: .9rem; }
.actions, .hint { grid-column: 1 / -1; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; }
.hint { margin: 0; color: var(--muted); font-size: .85rem; }

input, button {
    font: inherit;
    padding: .6rem .8rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button { cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button:disabled { opacity: .6; cursor: wait; }

.status { min-height: 1.5rem; text-align: center; color: var(--muted); }
.status.error { color: var(--error); }

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.result-header h2 { margin: 0; }
.muted { color: var(--muted); margin: .2rem 0 0; }
.now { display: flex; align-items: center; gap: .75rem; }
.icon { font-size: 3.5rem; line-height: 1; }
.temp { font-size: 2.2rem; font-weight: 700; }

.metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: .75rem;
    margin: 1.25rem 0;
}
.metrics div { background: var(--accent-soft); border-radius: 10px; padding: .6rem .8rem; }
.metrics dt { font-size: .8rem; color: var(--muted); }
.metrics dd { margin: 0; font-weight: 600; font-size: 1.1rem; }

h3 { margin: 1.25rem 0 .5rem; font-size: 1.05rem; }

.advice { margin: 0; padding-left: 0; list-style: none; display: grid; gap: .5rem; }
.advice li { background: var(--accent-soft); border-radius: 10px; padding: .6rem .8rem; }

.hourly {
    display: flex;
    gap: .5rem;
    overflow-x: auto;
    padding-bottom: .5rem;
}
.hour {
    flex: 0 0 auto;
    min-width: 64px;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: .5rem .3rem;
    font-size: .85rem;
}
.hour.selected { border-color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.hour .h-icon { font-size: 1.4rem; }
.hour .h-rain { color: var(--accent); font-size: .75rem; }

footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 1rem; }
footer a { color: var(--accent); }

@media (max-width: 600px) {
    .search { grid-template-columns: 1fr; }
}