.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1e3a5f 0%, #2d4a70 50%, #1e3a5f 100%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 1s ease, visibility 1s ease;
  overflow: hidden;
}

/* 和紙テクスチャ風の背景 */
.loading-screen::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.03) 2px,
      rgba(255, 255, 255, 0.03) 4px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.03) 2px,
      rgba(255, 255, 255, 0.03) 4px
    );
  pointer-events: none;
}

/* 波紋エフェクト */
.loading-screen::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 40%,
    transparent 70%
  );
  transform: translate(-50%, -50%);
  animation: ripple 4s ease-out infinite;
}

@keyframes ripple {
  0% {
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    width: 200%;
    height: 200%;
    opacity: 0;
  }
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* 書道風メインメッセージ */
.loading-message {
  position: relative;
  z-index: 1;
  text-align: center;
  margin-bottom: 60px;
}

.loading-kanji {
  font-family: "Noto Serif JP", serif;
  font-size: clamp(60px, 8vw, 100px);
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
  opacity: 0;
  animation: brushStroke 2s ease forwards;
  position: relative;
  font-family: "Noto Sans JP", "Yu Gothic", "YuGothic",
    "Hiragino Kaku Gothic ProN", "Hiragino Kaku Gothic Pro", "MS PGothic",
    sans-serif;
}

.loading-kanji span {
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  animation: kanjiAppear 0.8s ease forwards;
}

.loading-kanji span:nth-child(1) {
  animation-delay: 0.1s;
}
.loading-kanji span:nth-child(2) {
  animation-delay: 0.2s;
}
.loading-kanji span:nth-child(3) {
  animation-delay: 0.3s;
}
.loading-kanji span:nth-child(4) {
  animation-delay: 0.4s;
}
.loading-kanji span:nth-child(5) {
  animation-delay: 0.5s;
}
.loading-kanji span:nth-child(6) {
  animation-delay: 0.6s;
}
.loading-kanji span:nth-child(7) {
  animation-delay: 0.7s;
}
.loading-kanji span:nth-child(8) {
  animation-delay: 0.8s;
}
.loading-kanji span:nth-child(9) {
  animation-delay: 0.9s;
}

@keyframes kanjiAppear {
  0% {
    opacity: 0;
    transform: translateY(20px) scale(0.8);
  }
  50% {
    transform: translateY(0) scale(1.1);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.loading-subtitle {
  font-family: "Noto Sans JP", "Yu Gothic", "YuGothic",
    "Hiragino Kaku Gothic ProN", "Hiragino Kaku Gothic Pro", "MS PGothic",
    sans-serif;
  font-size: clamp(14px, 1.5vw, 18px);
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.3em;
  opacity: 0;
  animation: fadeIn 1s ease 1.5s forwards;
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

/* 和風アニメーション - 円形紋様 */
.loading-animation {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 20px auto 40px;
}

/* 外側の円 - 和紋風 */
.wa-circle {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  animation: waRotate 20s linear infinite;
}

.wa-circle::before,
.wa-circle::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
}

.wa-circle::before {
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.wa-circle::after {
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

/* 内側の円 */
.inner-circle {
  position: absolute;
  width: 120px;
  height: 120px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: waRotate 15s linear reverse infinite;
}

.inner-circle::before,
.inner-circle::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
}

.inner-circle::before {
  left: -7.5px;
  top: 50%;
  transform: translateY(-50%);
}

.inner-circle::after {
  right: -7.5px;
  top: 50%;
  transform: translateY(-50%);
}

/* 中心の文字群 */
.center-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.center-main {
  font-family: "Noto Serif JP", serif;
  font-size: 32px;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 0.1em;
  position: relative;
  animation: pulse 2s ease-in-out infinite;
}

.center-sub {
  position: absolute;
  bottom: -8px;
  right: -15px;
  font-family: "Noto Serif JP", serif;
  font-size: 16px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.1em;
  transform: rotate(-10deg);
  animation: fadeInRotate 1s ease 2s forwards;
  opacity: 0;
}

.center-english {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

/* 装飾的な線 */
.center-text::before {
  content: "";
  position: absolute;
  bottom: 15px;
  right: 5px;
  width: 40px;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.5) 50%,
    rgba(255, 255, 255, 0.8) 100%
  );
  transform: rotate(-30deg);
  animation: lineGrow 2s ease 2.5s forwards;
  transform-origin: left center;
  opacity: 0;
}

@keyframes fadeInRotate {
  0% {
    opacity: 0;
    transform: rotate(-10deg) scale(0.8);
  }
  100% {
    opacity: 1;
    transform: rotate(-10deg) scale(1);
  }
}

@keyframes lineGrow {
  0% {
    opacity: 0;
    transform: rotate(-30deg) scaleX(0);
  }
  100% {
    opacity: 1;
    transform: rotate(-30deg) scaleX(1);
  }
}

/* 禅言葉 */
.zen-words {
  position: absolute;
  font-family: "Noto Serif JP", serif;
  font-size: clamp(12px, 1.2vw, 14px);
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.2em;
}

.zen-word-1 {
  top: 10%;
  left: 10%;
  animation: floatWords 6s ease-in-out infinite;
}

.zen-word-2 {
  top: 10%;
  right: 10%;
  animation: floatWords 6s ease-in-out 1s infinite;
}

.zen-word-3 {
  bottom: 10%;
  left: 10%;
  animation: floatWords 6s ease-in-out 2s infinite;
}

.zen-word-4 {
  bottom: 10%;
  right: 10%;
  animation: floatWords 6s ease-in-out 3s infinite;
}

/* 進捗インジケーター - 墨汁風 */
.loading-progress {
  width: 300px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 40px;
  position: relative;
}

.loading-progress-bar {
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.8) 20%,
    #ffffff 50%,
    rgba(255, 255, 255, 0.8) 80%,
    transparent 100%
  );
  background-size: 200% 100%;
  transform: scaleX(0);
  transform-origin: left;
  animation: inkFlow 3s ease-out forwards;
}

/* アニメーション定義 */
@keyframes brushStroke {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes waRotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes yinYangRotate {
  0%,
  100% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  50% {
    transform: translate(-50%, -50%) rotate(180deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.8;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.1);
    opacity: 1;
  }
}

@keyframes floatWords {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0;
  }
  20%,
  80% {
    opacity: 0.6;
  }
  50% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

@keyframes inkFlow {
  0% {
    transform: scaleX(0);
    background-position: -200% 0;
  }
  100% {
    transform: scaleX(1);
    background-position: 0% 0;
  }
}

/* コンテンツの初期状態 */
body.loading {
  overflow: hidden;
}

.content-wrapper {
  opacity: 0;
  transition: opacity 0.8s ease;
}

body:not(.loading) .content-wrapper {
  opacity: 1;
}

/* 初期表示時のアニメーション */
body:not(.loading) .hero {
  animation: heroFadeIn 1.2s ease forwards;
}

@keyframes heroFadeIn {
  0% {
    opacity: 0;
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* モバイル対応 - 東京都で改行 */
.sp-br {
  display: none;
}

@media (max-width: 768px) {
  .sp-br {
    display: block;
  }
  .loading-kanji {
    font-size: clamp(30px, 8vw, 20px);
  }
}