@charset "UTF-8";

:root {
    color-scheme: light;
    background: #007c94;
    color: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    min-block-size: 100vh;
    min-block-size: 100svh;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: max(2rem, env(safe-area-inset-top)) max(1.25rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(1.25rem, env(safe-area-inset-left));
    text-align: center;
}

.calendar {
    inline-size: 100%;
    margin-block: auto;
    padding-block: 2rem 3rem;
}

.year {
    margin: 0;
    font-weight: 300;
}

.era {
    display: block;
    font-size: clamp(3rem, 10vw, 4.5rem);
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0.08em;
    padding-inline-start: 0.08em;
}

.era-english {
    display: block;
    margin-block-start: 0.4rem;
    font-size: clamp(1.2rem, 4vw, 1.75rem);
    line-height: 1.5;
    letter-spacing: 0.06em;
}

.year-number {
    position: relative;
    display: inline-block;
    margin-block: 0.7rem 1.1rem;
    font-size: clamp(7rem, 32vw, 17rem);
    font-weight: 300;
    font-variant-numeric: lining-nums tabular-nums;
    letter-spacing: -0.045em;
    line-height: 1.15;
}

.year-suffix {
    position: absolute;
    inset-inline-start: calc(100% + 0.3em);
    inset-block-end: 0.9em;
    font-size: 1.125rem;
    font-weight: 400;
    letter-spacing: normal;
}

.gregorian {
    margin: 0;
    font-size: clamp(1rem, 3.5vw, 1.2rem);
    letter-spacing: 0.08em;
    line-height: 1.6;
}

.timezone {
    margin-block: 0.6rem 0;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    line-height: 1.6;
}

footer {
    font-size: 0.8rem;
    line-height: 1.5;
}

a {
    display: inline-block;
    padding: 0.6rem;
    color: inherit;
    text-decoration: none;
    text-underline-offset: 0.25em;
}

a:hover {
    text-decoration: underline;
}

a:focus-visible {
    border-radius: 0.2rem;
    outline: 2px solid currentColor;
    outline-offset: 3px;
}

@media (max-height: 600px) and (min-width: 500px) {
    body { padding-block: 0.5rem; }
    .calendar { padding-block: 0.25rem 0.5rem; }
    .era { font-size: 2rem; }
    .era-english { font-size: 0.9rem; }
    .year-number { margin-block: 0 0.25rem; font-size: 5rem; }
    .gregorian { font-size: 0.9rem; }
    .timezone { margin-block-start: 0.4rem; font-size: 0.65rem; }
    footer { font-size: 0.7rem; }
    footer a { padding: 0.4rem; }
}