@charset "utf-8";
/* =====================
   RESET / BASE
===================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: #fff;
  color: #000;
}
/* =====================
   HAMBURGER
===================== */
.hamburger {
  position: fixed;
  top: 1.2rem;
  right: 1.2rem;
  width: 32px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}
.hamburger span {
  display: block;
  height: 3px;
  background: #000;
  margin-bottom: 5px;
}
/* =====================
   SIDE MENU
===================== */
.side-menu {
  position: fixed;
  top: 0;
  right: -280px;
  width: 260px;
  height: 100vh;
  background: #fff;
  padding: 4rem 2rem;
  transition: right 0.4s ease;
  z-index: 1000;
}
.side-menu.open {
  right: 0;
}
.side-menu ul {
  list-style: none;
}
.side-menu li {
  margin-bottom: 1.4rem;
}
.side-menu a {
  text-decoration: none;
  font-size: 1.1rem;
  color: #000;
}
/* overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
  z-index: 900;
}
.overlay.show {
  opacity: 1;
  pointer-events: auto;
}
/* =====================
   PAGE FADE
===================== */
/*.page-fade {
  position: fixed;
  inset: 0;
  background: #000;
  opacity: 0;
  pointer-events: none;
  z-index: 2000;
  transition: opacity 0.35s ease;
}*/
.page-fade {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(255, 255, 255, .96); /* ←ここがブラックアウトの色 */
  opacity: 0;
  pointer-events: none;
  transition: opacity .6s ease;
}
.page-fade.is-on {
  opacity: 1;
}
/* =====================
   prefers-reduced-motion
===================== */
@media (prefers-reduced-motion: reduce) {
  /* 自動・継続アニメーションは止める */
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}
/* =====================
   RIKISHI BACKGROUND
===================== */
.rikishi-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}
.rikishi-bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  opacity: 0;
  transition: opacity 1.2s ease;
  filter: blur(8px);
  transform: scale(1.05);
}

/* =========================
  side-menu 強化（力士UI）
========================= */

.side-menu__list {
  list-style: none;
  padding: 80px 20px;
  margin: 0;
}

.side-menu__item {
  margin-bottom: 14px;
}

/* リンク本体 */
.side-menu__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;

  padding: 10px 12px;
  border-radius: 10px;

  text-decoration: none;
  color: #222;
  font-size: 14px;

  transition: all .25s ease;
}

/* ホバー */
.side-menu__link:hover {
  transform: translateX(4px);
  background: rgba(var(--menu-accent-rgb), 0.10);
  box-shadow:
    inset 0 0 0 1px rgba(var(--menu-accent-rgb), 0.28),
    0 0 14px rgba(var(--menu-accent-rgb), 0.16);

  animation: sideMenuFlash .25s ease;
}

.side-menu__link:hover .side-menu__face {
  animation: sideFaceHappyShake .42s linear infinite;
}

.side-menu__link:hover::before {
  width: 6px;
  opacity: 1;
  box-shadow:
    0 0 8px rgba(var(--menu-accent-rgb), 0.9),
    0 0 18px rgba(var(--menu-accent-rgb), 0.55),
    0 0 30px rgba(var(--menu-accent-rgb), 0.28);
  animation: sideMenuNeonHover .7s ease-in-out infinite;
}


/* 顔画像 */
.side-menu__face {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
  transform-origin: center bottom;

  animation: sideFaceSwing 3.2s ease-in-out infinite;
}

/* 名前 */
.side-menu__label {
  display: inline-block;

  transition: color .2s ease, text-shadow .2s ease;
}

.side-menu__link:hover .side-menu__label {
  color: var(--menu-accent);
  text-shadow: 0 0 10px rgba(var(--menu-accent-rgb), 0.28);
}

/* =========================
  力士ごとの色枠
========================= */

.side-menu__link--ura {
  --menu-accent: #dd6c97;
  --menu-accent-rgb: 221, 108, 151;
}

.side-menu__link--takayasu {
  --menu-accent: #263f94;
  --menu-accent-rgb: 38, 63, 148;
}

.side-menu__link--nabatame {
  --menu-accent: #4a2751;
  --menu-accent-rgb: 74, 39, 81;
}

.side-menu__link--shirokuma {
  --menu-accent: #add06c;
  --menu-accent-rgb: 173, 208, 108;
}

.side-menu__link--takanosyou {
  --menu-accent: #611b1b;
  --menu-accent-rgb: 97, 27, 27;
}

.side-menu__link--top {
  --menu-accent: #666;
  --menu-accent-rgb: 102, 102, 102;
}

.side-menu__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 999px;
  background: var(--menu-accent);
  box-shadow:
    0 0 6px rgba(var(--menu-accent-rgb), 0.55),
    0 0 14px rgba(var(--menu-accent-rgb), 0.28);
  animation: sideMenuNeon 2.2s ease-in-out infinite;
  transition: width .2s ease, box-shadow .2s ease, opacity .2s ease;
}

/* =========================
  顔ゆらゆら
========================= */

@keyframes sideFaceSwing {
  0%   { transform: rotate(-2deg) translateY(0); }
  50%  { transform: rotate(2deg) translateY(-1px); }
  100% { transform: rotate(-2deg) translateY(0); }
}


@keyframes sideFaceHappyShake {
  0%   { transform: translate(0, 0) rotate(0deg) scale(1.04); }
  20%  { transform: translate(-1px, 1px) rotate(-8deg) scale(1.04); }
  40%  { transform: translate(1px, -1px) rotate(8deg) scale(1.04); }
  60%  { transform: translate(-1px, 0) rotate(-7deg) scale(1.04); }
  80%  { transform: translate(1px, 1px) rotate(7deg) scale(1.04); }
  100% { transform: translate(0, 0) rotate(0deg) scale(1.04); }
}


@keyframes sideMenuNeon {
  0%,
  100% {
    opacity: 0.72;
    box-shadow:
      0 0 4px rgba(var(--menu-accent-rgb), 0.4),
      0 0 10px rgba(var(--menu-accent-rgb), 0.2);
  }
  50% {
    opacity: 1;
    box-shadow:
      0 0 7px rgba(var(--menu-accent-rgb), 0.7),
      0 0 16px rgba(var(--menu-accent-rgb), 0.36),
      0 0 24px rgba(var(--menu-accent-rgb), 0.18);
  }
}


@keyframes sideMenuNeonHover {
  0%,
  100% {
    opacity: 0.82;
    box-shadow:
      0 0 8px rgba(var(--menu-accent-rgb), 0.72),
      0 0 18px rgba(var(--menu-accent-rgb), 0.42),
      0 0 28px rgba(var(--menu-accent-rgb), 0.2);
  }
  50% {
    opacity: 1;
    box-shadow:
      0 0 10px rgba(var(--menu-accent-rgb), 1),
      0 0 24px rgba(var(--menu-accent-rgb), 0.7),
      0 0 38px rgba(var(--menu-accent-rgb), 0.34);
  }
}


@keyframes sideMenuFlash {
  0% {
    box-shadow: 0 0 0 rgba(var(--menu-accent-rgb), 0);
  }
  100% {
    box-shadow: 0 0 20px rgba(var(--menu-accent-rgb), 0.4);
  }
}