/* ==========================================
   dme music 07
   ゴールを掴め！
   Seize the Goal!
========================================== */

* {
  margin: 0;

  padding: 0;

  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #000;

  color: #fff;

  font-family: "Segoe UI", "Yu Gothic", sans-serif;

  overflow-x: hidden;
}

/* ===================================
   BACK BUTTON
=================================== */

.hub-back {
  position: fixed;

  left: 24px;

  bottom: 24px;

  z-index: 99999;

  padding: 12px 22px;

  border-radius: 999px;

  background: rgba(0, 0, 0, 0.45);

  border: 1px solid rgba(255, 255, 255, 0.15);

  backdrop-filter: blur(14px);

  color: #fff;

  text-decoration: none;

  transition: 0.3s;
}

.hub-back:hover {
  transform: translateY(-2px);

  box-shadow: 0 0 20px rgba(0, 170, 255, 0.5);
}

/* ===================================
   HERO
=================================== */

.hero {
  position: relative;

  width: 100%;

  height: 100vh;

  overflow: hidden;
}

.hero-bg {
  position: absolute;

  inset: 0;

  width: 100%;

  height: 100%;

  object-fit: cover;
}

.overlay {
  position: absolute;

  inset: 0;

  background: linear-gradient(rgba(0, 30, 90, 0.2), rgba(0, 0, 0, 0.55));
}

.hero-glow {
  position: absolute;

  width: 700px;

  height: 700px;

  border-radius: 50%;

  left: 50%;

  top: 45%;

  transform: translate(-50%, -50%);

  background: radial-gradient(rgba(255, 215, 0, 0.18), transparent 70%);

  animation: glowMove 5s ease-in-out infinite;
}

@keyframes glowMove {
  50% {
    transform: translate(-50%, -50%) scale(1.08);
  }
}

/* ===================================
   BRAND
=================================== */

.brand {
  position: absolute;

  left: 50px;

  top: 40px;

  z-index: 20;
}

.brand-header {
  display: flex;

  align-items: center;

  gap: 16px;
}

.brand-icon {
  width: 58px;

  height: 58px;

  object-fit: contain;
}

.brand h1 {
  font-size: 2rem;

  font-weight: 300;

  letter-spacing: 0.1em;
}

.brand p {
  margin-top: 8px;

  color: rgba(255, 255, 255, 0.82);

  line-height: 1.7;

  font-size: 0.9rem;
}

/* ===================================
   TITLE
=================================== */

.title-wrap {
  position: absolute;

  left: 50%;

  top: 46%;

  transform: translate(-50%, -50%);

  text-align: center;

  z-index: 30;
}

.title-wrap h2 {
  font-size: 4.8rem;

  font-weight: 200;

  letter-spacing: 0.08em;

  text-shadow: 0 0 25px rgba(0, 150, 255, 0.45);
}

.title-wrap h3 {
  margin-top: 12px;

  font-size: 1.3rem;

  letter-spacing: 0.25em;
}

.title-line {
  width: 220px;

  height: 2px;

  margin: 24px auto;

  background: linear-gradient(
    to right,

    transparent,
    gold,
    transparent
  );
}
/* ===================================
   FLOATING LYRIC
=================================== */

.floating-lyric {
  position: absolute;

  left: 60px;

  bottom: 120px;

  z-index: 30;

  font-size: 1.3rem;

  font-weight: 300;

  letter-spacing: 0.08em;

  color: #ffffff;

  text-shadow: 0 0 12px rgba(0, 180, 255, 0.5);

  animation: lyricFloat 8s ease-in-out infinite;
}

@keyframes lyricFloat {
  0% {
    opacity: 0;

    transform: translateY(40px);
  }

  20% {
    opacity: 1;
  }

  80% {
    opacity: 1;
  }

  100% {
    opacity: 0;

    transform: translateY(-30px);
  }
}

/* ===================================
   PLAY BUTTON
=================================== */

.play-trigger {
  position: absolute;

  right: 8%;

  bottom: 10%;

  z-index: 50;
}

.play-circle {
  width: 180px;

  height: 180px;

  border-radius: 50%;

  display: flex;

  justify-content: center;

  align-items: center;

  cursor: pointer;

  background: radial-gradient(
    rgba(255, 255, 255, 0.25),
    rgba(0, 120, 255, 0.15),
    transparent 72%
  );

  border: 1px solid rgba(255, 255, 255, 0.15);

  transition: 0.35s;
}

.play-circle:hover {
  transform: scale(1.08);

  box-shadow: 0 0 40px rgba(255, 215, 0, 0.35);
}

.play-circle span {
  text-align: center;

  line-height: 1.8;

  letter-spacing: 0.18em;
}

/* ===================================
   ABOUT
=================================== */

.about {
  padding: 120px 30px;

  background: #071226;
}

.about-container {
  max-width: 900px;

  margin: auto;

  text-align: center;
}

.about-logo {
  width: 180px;

  margin-bottom: 40px;
}

.about h2 {
  font-size: 2.2rem;

  margin-bottom: 40px;
}

.about p {
  margin-top: 18px;

  line-height: 2;

  color: rgba(255, 255, 255, 0.88);
}

/* ===================================
   MESSAGE
=================================== */

.message {
  padding: 120px 30px;

  background: linear-gradient(#071226, #000);
}

.message-box {
  max-width: 900px;

  margin: auto;

  text-align: center;
}

.message-box h2 {
  font-size: 3rem;

  margin-bottom: 40px;
}

.message-box p {
  margin: 18px 0;

  font-size: 1.1rem;

  letter-spacing: 0.08em;
}

/* ===================================
   ENDING
=================================== */

.ending {
  padding: 140px 20px;

  text-align: center;

  background: #000;
}

.ending h2 {
  font-size: 3rem;

  margin-bottom: 16px;
}

.ending h3 {
  font-size: 2rem;

  font-weight: 300;

  margin-bottom: 50px;
}

#listenAgain {
  padding: 16px 34px;

  border: none;

  border-radius: 999px;

  cursor: pointer;

  font-size: 1rem;

  background: linear-gradient(90deg, #0066ff, #00bfff);

  color: #fff;

  transition: 0.3s;
}

#listenAgain:hover {
  transform: scale(1.05);
}

/* ===================================
   FOOTER
=================================== */

footer {
  padding: 50px 20px;

  text-align: center;

  background: #02060d;
}

.footer-icon {
  width: 48px;

  margin-bottom: 18px;
}

footer p {
  color: rgba(255, 255, 255, 0.6);
}

/* ===================================
   HIDDEN
=================================== */

.hidden {
  opacity: 0;

  visibility: hidden;
}

.show {
  opacity: 1;

  visibility: visible;

  transition: 1s;
}

/* ===================================
   MOBILE
=================================== */

@media (max-width: 768px) {
  .brand {
    left: 20px;

    top: 20px;
  }

  .brand-icon {
    width: 42px;

    height: 42px;
  }

  .brand h1 {
    font-size: 1.4rem;
  }

  .title-wrap h2 {
    font-size: 2.6rem;
  }

  .title-wrap h3 {
    font-size: 1rem;
  }

  .floating-lyric {
    left: 20px;

    bottom: 110px;

    font-size: 1rem;
  }

  .play-trigger {
    right: 50%;

    transform: translateX(50%);

    bottom: 60px;
  }

  .play-circle {
    width: 140px;

    height: 140px;
  }
}
.hub-back {
  position: fixed;
  left: 20px;
  bottom: 20px;

  z-index: 9999;

  padding: 10px 18px;

  border: 1px solid #4da3ff;

  border-radius: 999px;

  background: rgba(0, 0, 0, 0.65);

  color: #fff;

  text-decoration: none;
}

/* ===================================
   dme Logo
=================================== */

.brand-icon {
  width: 72px;
  height: auto;
  object-fit: contain;
}

.about-logo {
  width: 260px;
  max-width: 80%;
  height: auto;
  margin-bottom: 32px;
}
.footer-icon {
  width: 48px;
  height: auto;
  object-fit: contain;
  display: block;
  margin: 0 auto 16px;
}
/* ==========================
   Language Switch
========================== */

.lang-switch {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;

  display: flex;
  gap: 8px;
}

.lang-switch button {
  background: rgba(0, 0, 0, 0.65);
  color: #fff;

  border: 1px solid #4da3ff;

  padding: 8px 16px;

  border-radius: 999px;

  cursor: pointer;

  font-weight: 700;
}

.lang-switch button.active {
  background: #4da3ff;
  color: #fff;
}
.lyrics-text {
  text-align: center;
  white-space: pre-wrap;
  line-height: 2.2;
  font-size: 1.5rem;
  font-weight: 500;
}
/* ===================================
   LYRICS
=================================== */

.lyrics {
  padding: 120px 30px;
  background: #071226;
}

.lyrics-container {
  max-width: 900px;
  margin: auto;
  text-align: center;
}

.lyrics-container h2 {
  font-size: 2.2rem;
  margin-bottom: 40px;
}

.lyrics-container pre {
  white-space: pre-wrap;
  text-align: center;
  line-height: 2;
  color: rgba(255, 255, 255, 0.88);
}

.series-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 30px 0;
  flex-wrap: wrap;
}

.series-btn {
  display: inline-block;
  padding: 12px 28px;
  background: #0066cc;
  color: #fff;
  text-decoration: none;
  border-radius: 30px;
  font-weight: bold;
  transition: 0.2s;
}

.series-btn:hover {
  background: #004c99;
  transform: scale(1.05);
}

/* ===== EXTRA STAGE ===== */

.extra-stage-wrap {
  text-align: center;
  margin: 60px auto;
  padding: 40px 20px;
}

.extra-title {
  color: #ffffff;
  font-size: 2rem;
  letter-spacing: 3px;
  margin-bottom: 10px;
  text-shadow: 0 0 15px rgba(0, 255, 255, 0.6);
}

.extra-sub {
  color: #d0d0d0;
  margin-bottom: 30px;
  font-style: italic;
  letter-spacing: 1px;
}

.extra-btn {
  display: inline-block;
  padding: 16px 42px;
  background: linear-gradient(90deg, #00bfff, #00ff99);
  color: #000;
  font-size: 1.2rem;
  font-weight: bold;
  text-decoration: none;
  border-radius: 50px;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.45);
  transition: 0.25s;
}

.extra-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 0 35px rgba(0, 255, 255, 0.8);
}

/* ===== EXTRA STAGE ===== */

.extra-stage-wrap {
  text-align: center;
  margin: 60px auto;
  padding: 40px 20px;
}

.extra-title {
  color: #fff;
  font-size: 2rem;
  letter-spacing: 3px;
  margin-bottom: 10px;
  text-shadow: 0 0 15px rgba(0, 255, 255, 0.6);
}

.extra-sub {
  color: #d0d0d0;
  margin-bottom: 30px;
}

.extra-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.extra-btn {
  display: inline-block;
  padding: 16px 36px;
  background: linear-gradient(90deg, #00bfff, #00ff99);
  color: #000;
  text-decoration: none;
  font-weight: bold;
  border-radius: 50px;
  transition: 0.25s;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
}

.extra-btn:hover {
  transform: scale(1.05);
}

.extra-btn.stage2 {
  background: linear-gradient(90deg, #ffd700, #ff9f1a);
}