#rokuyo-calendar-tool {
  --krc-primary: #3f6f66;
  --krc-primary-dark: #315950;
  --krc-primary-soft: #e9f1ef;
  --krc-bg: #fbfaf7;
  --krc-card: #ffffff;
  --krc-text: #26322f;
  --krc-muted: #66736f;
  --krc-border: #dbe4e1;
  --krc-shadow: 0 10px 28px rgba(53, 76, 70, 0.08);
  --krc-sunday: #a84e4e;
  --krc-saturday: #3e668d;
  box-sizing: border-box;
  width: 100%;
  color: var(--krc-text);
  background: var(--krc-bg);
  border: 1px solid var(--krc-border);
  border-radius: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.7;
  overflow: hidden;
}

#rokuyo-calendar-tool[data-theme="dark"] {
  --krc-primary: #7fb4a9;
  --krc-primary-dark: #a4cfc6;
  --krc-primary-soft: #243c37;
  --krc-bg: #17201e;
  --krc-card: #202b28;
  --krc-text: #edf3f1;
  --krc-muted: #b8c6c2;
  --krc-border: #3b4d48;
  --krc-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
  --krc-sunday: #f0a1a1;
  --krc-saturday: #9ec4e8;
}

#rokuyo-calendar-tool *,
#rokuyo-calendar-tool *::before,
#rokuyo-calendar-tool *::after { box-sizing: border-box; }

#rokuyo-calendar-tool .krc-shell { padding: clamp(18px, 4vw, 38px); }
#rokuyo-calendar-tool .krc-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
#rokuyo-calendar-tool .krc-brand { margin: 0 0 2px; color: var(--krc-primary); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; }
#rokuyo-calendar-tool .krc-title { margin: 0; color: var(--krc-text); font-size: clamp(1.35rem, 4vw, 2rem); font-weight: 700; line-height: 1.4; }
#rokuyo-calendar-tool .krc-lead { max-width: 650px; margin: 8px 0 0; color: var(--krc-muted); font-size: 0.95rem; }
#rokuyo-calendar-tool button,
#rokuyo-calendar-tool select,
#rokuyo-calendar-tool input { font: inherit; }
#rokuyo-calendar-tool button { cursor: pointer; }
#rokuyo-calendar-tool button:focus-visible,
#rokuyo-calendar-tool select:focus-visible,
#rokuyo-calendar-tool input:focus-visible,
#rokuyo-calendar-tool summary:focus-visible { outline: 3px solid rgba(63, 111, 102, 0.28); outline-offset: 2px; }
#rokuyo-calendar-tool .krc-theme-button { flex: 0 0 auto; padding: 8px 12px; color: var(--krc-primary-dark); background: var(--krc-card); border: 1px solid var(--krc-border); border-radius: 999px; font-size: 0.84rem; font-weight: 700; }
#rokuyo-calendar-tool .krc-notice { display: flex; align-items: flex-start; gap: 9px; margin-bottom: 20px; padding: 11px 14px; color: var(--krc-primary-dark); background: var(--krc-primary-soft); border-radius: 10px; font-size: 0.84rem; }
#rokuyo-calendar-tool .krc-notice-mark { flex: 0 0 auto; font-weight: 800; }

#rokuyo-calendar-tool .krc-tabs { display: grid; grid-template-columns: 1fr 1fr; max-width: 520px; margin: 0 auto 20px; padding: 4px; background: var(--krc-primary-soft); border-radius: 12px; }
#rokuyo-calendar-tool .krc-tab { min-height: 44px; padding: 8px 14px; color: var(--krc-muted); background: transparent; border: 0; border-radius: 9px; font-weight: 700; }
#rokuyo-calendar-tool .krc-tab.is-active { color: var(--krc-primary-dark); background: var(--krc-card); box-shadow: 0 2px 8px rgba(48, 78, 70, 0.1); }
#rokuyo-calendar-tool .krc-panel[hidden] { display: none; }
#rokuyo-calendar-tool .krc-card { color: var(--krc-text); background: var(--krc-card); border: 1px solid var(--krc-border); border-radius: 16px; box-shadow: var(--krc-shadow); }
#rokuyo-calendar-tool .krc-controls-card { margin-bottom: 16px; padding: 18px; }
#rokuyo-calendar-tool .krc-date-controls { display: flex; align-items: flex-end; justify-content: center; gap: 12px; flex-wrap: wrap; }
#rokuyo-calendar-tool .krc-field { display: grid; gap: 5px; color: var(--krc-muted); font-size: 0.83rem; font-weight: 700; }
#rokuyo-calendar-tool .krc-field select,
#rokuyo-calendar-tool .krc-field input { min-height: 44px; padding: 8px 36px 8px 12px; color: var(--krc-text); background: var(--krc-card); border: 1px solid var(--krc-border); border-radius: 9px; }
#rokuyo-calendar-tool .krc-today-button,
#rokuyo-calendar-tool .krc-month-nav button { min-height: 44px; padding: 8px 14px; color: var(--krc-primary-dark); background: var(--krc-primary-soft); border: 1px solid transparent; border-radius: 9px; font-weight: 700; }
#rokuyo-calendar-tool .krc-month-nav button:disabled { cursor: not-allowed; opacity: 0.42; }
#rokuyo-calendar-tool .krc-month-nav { display: grid; grid-template-columns: minmax(78px, auto) 1fr minmax(78px, auto); align-items: center; gap: 10px; margin-top: 18px; }
#rokuyo-calendar-tool .krc-current-month { margin: 0; text-align: center; font-size: 1.18rem; font-weight: 700; }

#rokuyo-calendar-tool .krc-message { margin: 0 0 14px; padding: 12px 14px; color: #8b3434; background: #fff1f1; border: 1px solid #eccccc; border-radius: 10px; }
#rokuyo-calendar-tool[data-theme="dark"] .krc-message { color: #ffd0d0; background: #402828; border-color: #714646; }
#rokuyo-calendar-tool .krc-calendar-card { padding: 14px; overflow: hidden; }
#rokuyo-calendar-tool .krc-calendar { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 5px; }
#rokuyo-calendar-tool .krc-weekday { padding: 5px 2px 8px; color: var(--krc-muted); text-align: center; font-size: 0.78rem; font-weight: 700; }
#rokuyo-calendar-tool .krc-weekday:first-child { color: var(--krc-sunday); }
#rokuyo-calendar-tool .krc-weekday:nth-child(7) { color: var(--krc-saturday); }
#rokuyo-calendar-tool .krc-day,
#rokuyo-calendar-tool .krc-blank { min-width: 0; min-height: 82px; border-radius: 10px; }
#rokuyo-calendar-tool .krc-day { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; padding: 7px 3px; color: var(--krc-text); background: color-mix(in srgb, var(--krc-card) 92%, var(--krc-primary-soft)); border: 1px solid var(--krc-border); text-align: center; }
#rokuyo-calendar-tool .krc-day.is-today { border: 2px solid var(--krc-primary); background: var(--krc-primary-soft); }
#rokuyo-calendar-tool .krc-day.is-today::after { content: "今日"; position: absolute; top: 3px; right: 3px; padding: 0 4px; color: var(--krc-card); background: var(--krc-primary-dark); border-radius: 5px; font-size: 0.58rem; line-height: 1.5; }
#rokuyo-calendar-tool .krc-day-number { font-size: 0.92rem; font-weight: 700; line-height: 1; }
#rokuyo-calendar-tool .krc-day.is-sunday .krc-day-number { color: var(--krc-sunday); }
#rokuyo-calendar-tool .krc-day.is-saturday .krc-day-number { color: var(--krc-saturday); }
#rokuyo-calendar-tool .krc-rokuyo { color: var(--krc-primary-dark); font-size: clamp(0.66rem, 2.2vw, 0.86rem); font-weight: 700; white-space: nowrap; }
#rokuyo-calendar-tool .krc-rokuyo[data-rokuyo="大安"] { color: #a15141; }
#rokuyo-calendar-tool[data-theme="dark"] .krc-rokuyo[data-rokuyo="大安"] { color: #ffc0ac; }
#rokuyo-calendar-tool .krc-legend { display: flex; justify-content: flex-end; gap: 16px; flex-wrap: wrap; margin-top: 10px; color: var(--krc-muted); font-size: 0.76rem; }
#rokuyo-calendar-tool .krc-legend span { display: inline-flex; align-items: center; gap: 5px; }
#rokuyo-calendar-tool .krc-legend-today { width: 13px; height: 13px; border: 2px solid var(--krc-primary); border-radius: 4px; }

#rokuyo-calendar-tool .krc-search-card { display: flex; align-items: flex-end; justify-content: center; gap: 12px; padding: 20px; flex-wrap: wrap; }
#rokuyo-calendar-tool .krc-search-field input { min-width: 210px; padding-right: 12px; }
#rokuyo-calendar-tool .krc-primary-button { min-height: 44px; padding: 9px 20px; color: #fff; background: #3f6f66; border: 0; border-radius: 9px; font-weight: 700; }
#rokuyo-calendar-tool .krc-search-result { margin-top: 16px; padding: 24px; text-align: center; }
#rokuyo-calendar-tool .krc-search-result:empty { display: none; }
#rokuyo-calendar-tool .krc-result-date { margin: 0 0 8px; color: var(--krc-muted); font-size: 0.94rem; }
#rokuyo-calendar-tool .krc-result-rokuyo { margin: 0; color: var(--krc-primary-dark); font-size: clamp(2rem, 8vw, 3rem); font-weight: 800; line-height: 1.3; }
#rokuyo-calendar-tool .krc-result-reading { margin: 0 0 10px; color: var(--krc-muted); font-size: 0.85rem; }
#rokuyo-calendar-tool .krc-result-meaning { max-width: 520px; margin: 0 auto 12px; }
#rokuyo-calendar-tool .krc-result-lunar { display: inline-block; margin: 0; padding: 5px 10px; color: var(--krc-muted); background: var(--krc-primary-soft); border-radius: 999px; font-size: 0.78rem; }

#rokuyo-calendar-tool .krc-explanations { margin-top: 22px; padding: clamp(18px, 4vw, 28px); }
#rokuyo-calendar-tool .krc-section-title { font-size: 1.2rem; font-weight: 700; }
#rokuyo-calendar-tool .krc-section-intro { margin: 7px 0 18px; color: var(--krc-muted); font-size: 0.88rem; }
#rokuyo-calendar-tool .krc-explanation-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
#rokuyo-calendar-tool .krc-explanation-grid article { padding: 14px; background: var(--krc-primary-soft); border-radius: 10px; }
#rokuyo-calendar-tool .krc-explanation-grid article > div { color: var(--krc-primary-dark); font-weight: 700; }
#rokuyo-calendar-tool .krc-explanation-grid p { margin: 4px 0 0; color: var(--krc-muted); font-size: 0.84rem; }
#rokuyo-calendar-tool .krc-method { margin-top: 16px; box-shadow: none; }
#rokuyo-calendar-tool .krc-method summary { padding: 15px 18px; color: var(--krc-primary-dark); cursor: pointer; font-weight: 700; }
#rokuyo-calendar-tool .krc-method-body { padding: 0 18px 15px; color: var(--krc-muted); font-size: 0.84rem; }
#rokuyo-calendar-tool .krc-method-body p { margin: 0 0 8px; }

@media (max-width: 600px) {
  #rokuyo-calendar-tool .krc-shell { padding: 16px 10px; }
  #rokuyo-calendar-tool .krc-header { gap: 10px; }
  #rokuyo-calendar-tool .krc-theme-button { padding: 7px 9px; font-size: 0.75rem; }
  #rokuyo-calendar-tool .krc-controls-card { padding: 14px 10px; }
  #rokuyo-calendar-tool .krc-date-controls { gap: 8px; }
  #rokuyo-calendar-tool .krc-field select { padding-right: 25px; }
  #rokuyo-calendar-tool .krc-month-nav { gap: 5px; }
  #rokuyo-calendar-tool .krc-month-nav button { padding: 7px 8px; font-size: 0.78rem; }
  #rokuyo-calendar-tool .krc-current-month { font-size: 1rem; }
  #rokuyo-calendar-tool .krc-calendar-card { padding: 8px 5px 10px; }
  #rokuyo-calendar-tool .krc-calendar { gap: 2px; }
  #rokuyo-calendar-tool .krc-day,
  #rokuyo-calendar-tool .krc-blank { min-height: 64px; border-radius: 7px; }
  #rokuyo-calendar-tool .krc-day { gap: 3px; padding: 5px 1px; }
  #rokuyo-calendar-tool .krc-day.is-today::after { content: ""; top: 3px; right: 3px; width: 5px; height: 5px; padding: 0; border-radius: 50%; }
  #rokuyo-calendar-tool .krc-day-number { font-size: 0.8rem; }
  #rokuyo-calendar-tool .krc-rokuyo { font-size: 0.64rem; }
  #rokuyo-calendar-tool .krc-explanation-grid { grid-template-columns: 1fr; }
  #rokuyo-calendar-tool .krc-search-card { align-items: stretch; }
  #rokuyo-calendar-tool .krc-search-field,
  #rokuyo-calendar-tool .krc-search-field input,
  #rokuyo-calendar-tool .krc-primary-button { width: 100%; min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  #rokuyo-calendar-tool * { scroll-behavior: auto !important; }
}