/* ===== K1e.jp — Dark Mysterious Music Page ===== */

:root {
  --bg: #0a0a0f;
  --bg2: #111118;
  --bg3: #16161f;
  --gold: #c9a84c;
  --gold-light: #e8d48b;
  --gold-dark: #8a6d2b;
  --text: #e8e6e3;
  --text-dim: #8a8a95;
  --text-muted: #555560;
  --accent: #c9a84c;
  --radius: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: 'Noto Sans JP', 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.gold { color: var(--gold); }
.center { text-align: center; }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.1);
  transition: var(--transition);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--gold);
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.6rem;
  letter-spacing: 2px;
}

.nav-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: var(--transition);
}

.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 16px 24px 24px;
  gap: 16px;
  border-top: 1px solid rgba(201, 168, 76, 0.1);
}

.nav-mobile.open { display: flex; }

.nav-mobile a {
  text-decoration: none;
  color: var(--text-dim);
  font-size: 1rem;
  padding: 8px 0;
  transition: var(--transition);
}

.nav-mobile a:hover { color: var(--gold); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(201, 168, 76, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(100, 60, 20, 0.06) 0%, transparent 50%),
    var(--bg);
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% { opacity: 0; transform: translateY(0) scale(0.5); }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { opacity: 0; transform: translateY(-100vh) scale(1.5); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 100px 24px 60px;
}

.hero-album-art {
  width: 280px;
  height: 280px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow:
    0 0 60px rgba(201, 168, 76, 0.15),
    0 20px 60px rgba(0, 0, 0, 0.5);
  margin-bottom: 40px;
  animation: albumGlow 4s ease-in-out infinite alternate;
}

@keyframes albumGlow {
  0% { box-shadow: 0 0 40px rgba(201, 168, 76, 0.1), 0 20px 60px rgba(0, 0, 0, 0.5); }
  100% { box-shadow: 0 0 80px rgba(201, 168, 76, 0.25), 0 20px 60px rgba(0, 0, 0, 0.5); }
}

.hero-title {
  margin-bottom: 12px;
}

.hero-title-k1e {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(4rem, 12vw, 8rem);
  letter-spacing: 12px;
  color: var(--gold);
  text-shadow: 0 0 40px rgba(201, 168, 76, 0.3);
  display: block;
  line-height: 1;
}

.hero-subtitle {
  font-family: 'Inter', sans-serif;
  font-size: clamp(1rem, 3vw, 1.4rem);
  font-weight: 300;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 40px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: #0a0a0f;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201, 168, 76, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid rgba(201, 168, 76, 0.3);
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
}

.hero-scroll-hint span {
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.scroll-arrow {
  width: 1px;
  height: 30px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.7); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 0;
}

.section-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: 4px;
  margin-bottom: 16px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 48px;
}

/* ===== ABOUT ===== */
.about { background: var(--bg2); }

.about-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 60px;
  align-items: center;
}

.about-img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.about-desc {
  font-size: 1.1rem;
  line-height: 2;
  color: var(--text-dim);
  margin-bottom: 32px;
}

.about-meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
}

.meta-value {
  font-size: 0.95rem;
  color: var(--text);
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .about-img {
    width: 200px;
    margin: 0 auto;
  }
}

/* ===== MUSIC / TRACKLIST ===== */
.music {
  background: var(--bg);
}

.tracklist {
  max-width: 800px;
  margin: 0 auto;
}

.track {
  border-bottom: 1px solid rgba(201, 168, 76, 0.08);
  transition: var(--transition);
}

.track:hover {
  background: rgba(201, 168, 76, 0.02);
}

.track-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 16px;
  cursor: pointer;
  user-select: none;
}

.track-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  color: var(--text-muted);
  min-width: 36px;
}

.track-info {
  flex: 1;
}

.track-title {
  font-family: 'Inter', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
  transition: var(--transition);
}

.track:hover .track-title { color: var(--gold); }

.track-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.track-toggle {
  font-family: 'Inter', sans-serif;
  font-size: 1.4rem;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 24px;
  text-align: center;
}

.track.open .track-toggle {
  transform: rotate(45deg);
  color: var(--gold);
}

.track-lyrics {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.track.open .track-lyrics {
  max-height: 1200px;
}

.lyrics-content {
  padding: 0 16px 32px 72px;
}

.lyrics-section {
  margin-bottom: 20px;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.9;
}

.lyrics-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  display: block;
  margin-bottom: 4px;
}

@media (max-width: 768px) {
  .lyrics-content { padding-left: 16px; }
}

/* ===== ARTISTS ===== */
.artists { background: var(--bg2); }

.artists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.artist-card {
  background: rgba(201, 168, 76, 0.03);
  border: 1px solid rgba(201, 168, 76, 0.08);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: var(--transition);
}

.artist-card:hover {
  border-color: rgba(201, 168, 76, 0.25);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.artist-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 20%;
  margin: 0 auto 20px;
  border: 2px solid rgba(201, 168, 76, 0.3);
  transition: var(--transition);
}

.artist-card:hover .artist-photo {
  border-color: var(--gold);
  box-shadow: 0 0 30px rgba(201, 168, 76, 0.2);
}

.artist-name {
  font-family: 'Inter', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.artist-role {
  font-size: 0.7rem;
  color: var(--gold);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.artist-role-sub {
  font-size: 0.65rem;
  color: var(--gold-dark);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.artist-desc {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ===== MUSIC GRID ===== */
.music-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background: transparent;
  border: 1px solid rgba(201, 168, 76, 0.15);
  color: var(--text-dim);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--bg);
}

.music-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.music-card {
  text-decoration: none;
  color: var(--text);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg2);
  border: 1px solid rgba(201, 168, 76, 0.06);
  transition: var(--transition);
}

.music-card:hover {
  transform: translateY(-6px);
  border-color: rgba(201, 168, 76, 0.2);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.music-card.hidden {
  display: none;
}

.music-card-art {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
}

.music-card-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.music-card:hover .music-card-art img {
  transform: scale(1.08);
}

.music-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 15, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.music-card:hover .music-card-overlay {
  opacity: 1;
}

.music-card-play {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  padding-left: 3px;
}

.music-card-info {
  padding: 16px;
}

.music-card-info h3 {
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.3;
}

.music-card-info p {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.tag-small {
  font-size: 0.65rem;
  background: rgba(201, 168, 76, 0.15);
  color: var(--gold);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 400;
  vertical-align: middle;
}

@media (max-width: 768px) {
  .music-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .music-card-info { padding: 12px; }
  .music-card-info h3 { font-size: 0.85rem; }
}

@media (max-width: 420px) {
  .music-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
}

/* ===== TRACK PAGE ===== */
.track-page-hero {
  padding: 120px 0 60px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.track-page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(201, 168, 76, 0.06) 0%, transparent 60%);
}

.track-hero-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.track-hero-art {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.track-hero-info h1 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: 3px;
  color: var(--gold);
  margin-bottom: 8px;
}

.track-hero-info .track-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.track-hero-info .track-description {
  font-size: 1rem;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 24px;
}

.track-hero-info .track-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .track-hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  .track-hero-art {
    width: 240px;
    margin: 0 auto;
  }
  .track-hero-info .track-links { justify-content: center; }
}

.track-lyrics-section {
  padding: 80px 0;
  background: var(--bg2);
}

.track-lyrics-section .lyrics-body {
  max-width: 700px;
  margin: 0 auto;
}

.track-lyrics-section .lyrics-body p {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 24px;
}

.track-lyrics-section .lyrics-body .lyrics-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  display: block;
  margin-bottom: 4px;
}

.track-nav {
  display: flex;
  justify-content: space-between;
  padding: 40px 0;
}

.track-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition);
}

.track-nav a:hover { color: var(--gold); }

/* ===== LINKS ===== */
.links { background: var(--bg); }

.links-grid {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.link-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 40px;
  background: var(--bg3);
  border: 1px solid rgba(201, 168, 76, 0.08);
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition);
  min-width: 160px;
}

.link-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(201, 168, 76, 0.1);
}

.link-icon {
  color: var(--gold);
  opacity: 0.7;
  transition: var(--transition);
}

.link-card:hover .link-icon { opacity: 1; }

.link-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 1px;
  transition: var(--transition);
}

.link-card:hover .link-name { color: var(--gold); }

/* ===== FOOTER ===== */
.footer {
  padding: 60px 0 40px;
  text-align: center;
  background: var(--bg);
  border-top: 1px solid rgba(201, 168, 76, 0.06);
}

.footer-logo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
  opacity: 0.6;
}

.footer-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  opacity: 0.5;
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--gold-dark);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gold);
}

/* ===== SELECTION ===== */
::selection {
  background: rgba(201, 168, 76, 0.3);
  color: var(--text);
}

/* ===== ALBUM SECTION ===== */
.album { background: var(--bg2); }

.album-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.album-art-wrap {
  position: relative;
}

.album-art-wrap {
  max-width: 400px;
}

.album-art-large {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(201, 168, 76, 0.2);
  transition: var(--transition);
}

.album-art-large:hover {
  transform: scale(1.02);
  box-shadow: 0 30px 80px rgba(201, 168, 76, 0.3);
}

.album-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2.5rem;
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.album-desc {
  color: var(--text-dim);
  font-size: 1rem;
  margin-bottom: 24px;
}

.album-tracklist {
  list-style: none;
  counter-reset: track;
  margin-bottom: 30px;
}

.album-tracklist li {
  counter-increment: track;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 0.9rem;
  color: var(--text-dim);
  transition: var(--transition);
}

.album-tracklist li::before {
  content: counter(track, decimal-leading-zero) ". ";
  color: var(--gold);
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1rem;
  margin-right: 8px;
}

.album-tracklist li:hover {
  color: var(--gold-light);
  padding-left: 8px;
}

.album-tracklist li a {
  color: inherit;
  text-decoration: none;
}

.album-tracklist li a:hover {
  color: var(--gold-light);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.85rem;
}

.music-card-badge {
  display: inline-block;
  background: var(--gold);
  color: var(--bg);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .album-showcase {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }
  .album-art-large {
    max-width: 300px;
    margin: 0 auto;
  }
  .album-name {
    font-size: 2rem;
  }
}