/* sticky-cta.css — ベースライン(自動読込)。最低限の見た目を保証する。
   上書き・拡張はページ側/custom側で行い、このファイルと同名クラスをゼロから書き直さないこと。
   色・フォントは必ず var(--color-*) / var(--font-*) を参照(生hex禁止=契約C3)。
   最小要件: position:fixed / bottom:0 / 既定は隠れていて .is-visible で出る / モバイルで指が届く高さ。 */

.sticky-cta {
  display: block;  /* common.css の平置き防止(既定none)を上書き=CSSが読めた時だけ表示 */
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  /* .site-header=100 / .site-nav=99 より下。モバイルナビが開いたら背面へ回る。 */
  z-index: 90;
  background: var(--color-primary);
  color: var(--color-on-primary);
  /* 既定は隠す。sticky-cta.js が .is-visible を付けたら出る。 */
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform .25s ease, opacity .25s ease;
}
.sticky-cta.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
@media (prefers-reduced-motion: reduce) {
  .sticky-cta { transition: none; }
}

.sticky-cta {
  background: transparent;
  padding: 0 0 clamp(0.9rem, 2.5vw, 1.5rem);
  display: flex;
  justify-content: center;
}

.sticky-cta-inner {
  max-width: 42rem;
  width: auto;
  margin: 0 auto;
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0.85rem;
  padding: 0.6rem;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
  border-radius: 999px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.18), 0 2px 8px rgba(0,0,0,0.08);
}

.sticky-cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .7rem;
  padding: .75rem 1.5rem .75rem 1rem;
  color: var(--color-on-primary);
  text-decoration: none;
  font-weight: 700;
  line-height: 1.25;
  border-radius: 999px;
  border: none;
  position: relative;
  overflow: hidden;
  transition: transform .28s cubic-bezier(.34,1.56,.64,1), box-shadow .28s ease, filter .28s ease;
}
.sticky-cta-btn:hover { transform: translateY(-3px) scale(1.02); filter: brightness(1.06); }
.sticky-cta-btn:active { transform: translateY(-1px) scale(0.99); }
.sticky-cta-btn:focus-visible { outline: 2px solid var(--color-on-primary); outline-offset: 3px; }

.sticky-cta-tel {
  background: linear-gradient(135deg, var(--color-secondary) 0%, color-mix(in srgb, var(--color-secondary) 78%, #000) 100%);
  color: var(--color-on-secondary, #fff);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--color-secondary) 45%, transparent);
}
.sticky-cta-tel:hover { box-shadow: 0 8px 24px color-mix(in srgb, var(--color-secondary) 55%, transparent); }

/* 差し色でメインCTAを一段強くする案(案ごとに変える軸のひとつ) */
.sticky-cta-mail {
  background: linear-gradient(135deg, var(--color-accent) 0%, color-mix(in srgb, var(--color-accent) 78%, #000) 100%);
  color: var(--color-on-accent);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--color-accent) 45%, transparent);
}
.sticky-cta-mail:hover { box-shadow: 0 8px 24px color-mix(in srgb, var(--color-accent) 55%, transparent); }

.sticky-cta-btn svg {
  width: 1.2rem;
  height: 1.2rem;
  flex: none;
  padding: .4rem;
  box-sizing: content-box;
  background: rgba(255,255,255,0.22);
  border-radius: 50%;
  transition: transform .28s ease, background .28s ease;
}
.sticky-cta-btn:hover svg { transform: rotate(-8deg) scale(1.08); background: rgba(255,255,255,0.32); }

.sticky-cta-label { display: flex; flex-direction: column; text-align: left; }
.sticky-cta-label b { font-size: 1rem; letter-spacing: .02em; }
.sticky-cta-label span { font-size: .72rem; opacity: .85; font-weight: 500; }

@media (max-width: 768px) {
  .sticky-cta { padding: 0 0 0.85rem; }
  .sticky-cta-inner {
    max-width: calc(100% - 1.5rem);
    width: 100%;
    gap: 0.5rem;
    padding: 0.45rem;
    border-radius: 22px;
  }
  .sticky-cta-btn {
    flex: 1;
    padding: .6rem .5rem;
    border-radius: 16px;
    gap: .4rem;
  }
  .sticky-cta-label b { font-size: .85rem; }
  .sticky-cta-label span { font-size: .64rem; }
  .sticky-cta-btn svg { width: 1rem; height: 1rem; padding: .3rem; }
}