:root {
    color-scheme: light;
    --accent: #0667a7;
    --accent-dark: #044b7a;
    --background: #f4f7f8;
    --surface: #fff;
    --border: #dce4e8;
    --text: #17252d;
    font-family: Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-width: 0;
    color: var(--text);
    background: var(--background);
    font-size: 16px;
    line-height: 1.45;
}

.site-header { padding: 24px 16px 8px; text-align: center; }
h1 { margin: 0; color: var(--accent); font-size: clamp(1.7rem, 5vw, 2.35rem); }
h2 { margin: 0 0 16px; font-size: clamp(1.3rem, 4vw, 1.7rem); }
a { color: var(--accent); }
.feedback-link { display: inline-block; margin-top: 10px; }

.tab-buttons {
    display: flex;
    gap: 8px;
    width: min(100% - 24px, 980px);
    margin: 16px auto;
    padding: 4px 0 8px;
    overflow-x: auto;
    scrollbar-width: thin;
}

button {
    min-height: 42px;
    border: 0;
    border-radius: 8px;
    padding: 9px 15px;
    color: #fff;
    background: var(--accent);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}
button:hover, button:focus-visible { background: var(--accent-dark); }
button:focus-visible { outline: 3px solid #8dc8ec; outline-offset: 2px; }

.tab-content { width: min(100% - 24px, 1180px); margin: 0 auto 32px; text-align: center; }
.plot-container { display: none; min-width: 0; padding: 20px; overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
.about-wrapper { display: flex; justify-content: center; width: 100%; }
#about { width: min(100%, 680px); text-align: left; line-height: 1.6; }
#about h2 { text-align: center; }
#about h3 { margin: 25px 0 12px; color: var(--accent); }
#about .contact { margin-top: 25px; text-align: center; font-style: italic; }
#about .url-list { margin: 10px 0; padding: 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--background); }
#about .url-item { margin: 8px 0; padding: 8px; border-left: 3px solid var(--accent); border-radius: 4px; background: #fff; font: 0.85rem/1.5 monospace; overflow-wrap: anywhere; }

.forecast-container { max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.forecast-container table { margin: 12px auto; border-collapse: collapse; font-size: 1rem; }
.forecast-container th, .forecast-container td { padding: 7px 10px; text-align: center; vertical-align: middle; white-space: nowrap; border-bottom: 1px solid #edf1f3; }
.forecast-container th { background: #edf2f4; }
.forecast-container .grey { color: #7b8790; }
.forecast-container .unit { padding-right: 5px; font-size: 0.75rem; }
.forecast-container .rounded-span { display: inline-block; width: 5px; height: 18px; margin-right: 4px; border-radius: 3px; }
.forecast-container h3 { display: inline-block; margin: 0 4px; font-size: 1rem; }

.schev-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-bottom: 16px; }
.schev-tabs button { min-height: 38px; padding: 7px 13px; font-size: 0.9rem; }
.schev-tabs button.selected { background: var(--accent-dark); }
img { max-width: 100%; height: auto; }

@media (max-width: 600px) {
    .site-header { padding-top: 18px; }
    .tab-buttons { width: 100%; margin: 10px 0; padding: 4px 12px 10px; }
    .tab-content { width: 100%; margin-bottom: 0; }
    .plot-container { padding: 14px 12px 20px; border-right: 0; border-left: 0; border-radius: 0; }
    .forecast-container { margin-inline: -12px; padding-inline: 12px; }
    .forecast-container table { font-size: 0.9rem; }
    .forecast-container th, .forecast-container td { padding: 6px 8px; }
    #about ol { padding-left: 22px; }
}