/* =========================
   BASE
========================= */
html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text-base);
  background-image: url("../img/common/background.jpg");
  background-repeat: repeat-y;
  background-size: 100dvw;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

main {
  flex-grow: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* =========================
   HEADER
========================= */
.site-header {
  position: sticky;
  top: 0;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  z-index: 100;
  color: var(--text-bg-white);
}

.header-inner {
  max-width: 1100px;
  width: 90vw;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: calc(1.4rem + 18px);
}

.sns-links {
  padding: 12px 0;
}

.sns-links a {
  margin-left: 12px;
  font-size: 1.4rem;
  transition: 0.2s;
}

.sns-links a:hover {
  color: var(--base);
}

/* =========================
   FOOTER
========================= */
.site-footer {
  text-align: center;
  padding: 20px 0;
  background: var(--base);
  color: var(--text-bg-base);
}