/* ============================================================
   Real Ponkotsu — スタイルシート
   ============================================================ */

/* ---------- CSS変数 ---------- */
:root {
  --color-bg:        #0d0d12;
  --color-bg-2:      #111118;
  --color-bg-3:      #16161f;
  --color-bg-card:   #1a1a24;
  --color-border:    #2a2a38;

  --color-text:      #e8e8f0;
  --color-text-muted:#8888a0;
  --color-text-dim:  #555568;

  --color-red:    #e85068;
  --color-blue:   #4a90d9;
  --color-yellow: #d4b800;
  --color-green:  #3ea87a;

  --font-en: "Helvetica Neue", Arial, sans-serif;
  --font-ja: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --transition: 0.25s ease;

  --container: 1120px;
  --gap: clamp(1.5rem, 4vw, 3rem);
}

/* ---------- リセット & ベース ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-ja);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ---------- コンテナ ---------- */
.container {
  width: min(var(--container), 100% - 2rem);
  margin-inline: auto;
}

/* ---------- セクション共通 ---------- */
.section {
  padding-block: clamp(4rem, 10vw, 7rem);
}

.section-title {
  font-family: var(--font-en);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.3em;
}
.section-title::after {
  content: "";
  display: block;
  width: 2.5rem;
  height: 2px;
  background: var(--color-red);
  margin-top: 0.5em;
}

.section-lead {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.9;
  margin-top: 1.5rem;
  margin-bottom: 3rem;
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.65em 1.6em;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: var(--transition);
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--color-red); outline-offset: 3px; }

.btn-primary {
  background: var(--color-red);
  color: #fff;
}
.btn-primary:hover { background: #f26070; transform: translateY(-1px); }

.btn-secondary {
  border: 1.5px solid var(--color-border);
  color: var(--color-text-muted);
}
.btn-secondary:hover { border-color: var(--color-text-muted); color: var(--color-text); }

.btn-sm { padding: 0.45em 1.1em; font-size: 0.82rem; }

/* ---------- タグ ---------- */
.tag {
  display: inline-block;
  padding: 0.2em 0.7em;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  text-transform: uppercase;
}
.tag-sm { padding: 0.15em 0.55em; font-size: 0.65rem; }
.tag-featured {
  border-color: var(--color-red);
  color: var(--color-red);
}


/* ============================================================
   NAVIGATION
   ============================================================ */
.nav-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background var(--transition), backdrop-filter var(--transition);
}
.nav-header.scrolled {
  background: rgba(13, 13, 18, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 2.5rem);
  max-width: calc(var(--container) + 4rem);
  margin-inline: auto;
}

.nav-logo {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text);
}
.nav-logo:hover { color: var(--color-red); }

.nav-links {
  display: flex;
  gap: 2rem;
}
.nav-links a {
  font-family: var(--font-en);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

@media (max-width: 680px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    inset-inline: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(13, 13, 18, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    display: block;
    padding: 1rem 1.5rem;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-border);
  }
}


/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(13, 13, 18, 0.92) 0%,
    rgba(13, 13, 18, 0.75) 45%,
    rgba(13, 13, 18, 0.25) 75%,
    transparent 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: clamp(5rem, 12vw, 8rem) clamp(1rem, 5vw, 3rem);
  max-width: 600px;
}

.hero-band-name-en {
  font-family: var(--font-en);
  font-size: clamp(0.75rem, 2vw, 0.9rem);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-red);
  margin-bottom: 0.2em;
}
.hero-band-name-ja {
  font-family: var(--font-ja);
  font-size: clamp(0.85rem, 2vw, 1rem);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 1.2em;
}

.hero-copy {
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.01em;
  margin-bottom: 1.2em;
}

.hero-sub {
  font-size: clamp(0.95rem, 2.2vw, 1.08rem);
  color: var(--color-text-muted);
  line-height: 2.1;
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

@media (max-width: 600px) {
  .hero-overlay {
    background: linear-gradient(
      180deg,
      rgba(13,13,18,0.3) 0%,
      rgba(13,13,18,0.72) 52%,
      rgba(13,13,18,0.96) 100%
    );
  }
  .hero { align-items: flex-end; }
  .hero-content {
    padding: 2rem 1.2rem 3rem;
    max-width: 100%;
  }
  .hero-img { object-position: 70% top; }
}


/* ============================================================
   ABOUT
   ============================================================ */
.about { background: var(--color-bg-2); }

.about-body {
  max-width: 620px;
  margin-top: 2.5rem;
  padding-left: 1.5rem;
  border-left: 2px solid var(--color-red);
}
.about-body p {
  font-size: clamp(0.9rem, 2.2vw, 1.05rem);
  line-height: 2;
  margin-bottom: 1.4em;
  color: var(--color-text-muted);
}
.about-body p:first-child {
  color: var(--color-text);
  font-size: clamp(1rem, 2.5vw, 1.15rem);
}


/* ============================================================
   MEMBERS
   ============================================================ */
.members { background: var(--color-bg); }

.members-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.member-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  border-top: 3px solid var(--member-color, var(--color-red));
}
.member-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 36px rgba(0,0,0,0.45);
}

/* ポートレート画像 */
.member-card-portrait {
  overflow: hidden;
  aspect-ratio: 3 / 4;
}
.member-card-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease, filter 0.4s ease;
}
.member-card:hover .member-card-portrait img {
  transform: scale(1.04);
  filter: brightness(1.1);
}

.member-card-body {
  padding: 1.25rem 1.25rem 1.4rem;
}

.member-header {
  margin-bottom: 0.9rem;
}

.member-name {
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--font-en);
  letter-spacing: 0.04em;
  line-height: 1.1;
  margin-bottom: 0.2em;
}

.member-role {
  display: block;
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.member-catchcopy {
  font-size: 0.79rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 0.75rem;
  font-style: italic;
}

.member-bio {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: 1.1rem;
}

.member-spec {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1.1rem;
  font-size: 0.76rem;
}
.member-spec > div { display: flex; gap: 0.8em; }
.member-spec dt {
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  min-width: 4.5em;
}
.member-spec dd { color: var(--color-text-muted); }

.member-pickup {
  display: flex;
  align-items: baseline;
  gap: 0.5em;
  padding-top: 0.9rem;
  border-top: 1px solid var(--color-border);
}
.member-pickup-label {
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  white-space: nowrap;
}
.member-pickup-song {
  font-size: 0.8rem;
  font-weight: 600;
}

/* タブレット: 2列 */
@media (max-width: 900px) {
  .members-grid { grid-template-columns: repeat(2, 1fr); }
}
/* スマホ: 1列 */
@media (max-width: 520px) {
  .members-grid { grid-template-columns: 1fr; }
  .member-card-body { padding: 1rem 1rem 1.2rem; }
  .member-catchcopy { margin-bottom: 0.55rem; }
  .member-bio {
    font-size: 0.79rem;
    line-height: 1.75;
    margin-bottom: 0.85rem;
  }
  .member-spec { margin-bottom: 0.85rem; }
}


/* ============================================================
   MUSIC
   ============================================================ */
.music { background: var(--color-bg-2); }

.main-songs-label {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-red);
  margin-top: 3.5rem;
  margin-bottom: 1rem;
}

.main-songs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.main-song-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.main-song-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.main-song-jacket img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.main-song-info { padding: 1.3rem; }

.main-song-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.7rem;
}

.main-song-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.main-song-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.main-song-btns { display: flex; gap: 0.5rem; }

/* Discography */
.discography-heading {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.discography-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.disc-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.disc-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}
.disc-card:hover .disc-jacket img { filter: brightness(1.15); }

.disc-jacket {
  position: relative;
}
.disc-jacket img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: filter var(--transition);
}
.disc-number {
  position: absolute;
  top: 0.4rem;
  left: 0.4rem;
  background: rgba(0,0,0,0.65);
  color: var(--color-text-muted);
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15em 0.45em;
  border-radius: 4px;
}

.disc-info { padding: 0.75rem 0.75rem 0.8rem; }

.disc-title {
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.disc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-bottom: 0.6rem;
}

.disc-listen {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.2em 0.6em;
  transition: var(--transition);
  display: inline-block;
}
.disc-listen:hover { color: var(--color-text); border-color: var(--color-text-muted); }

/* タブレット: 3列 */
@media (max-width: 960px) {
  .discography-grid { grid-template-columns: repeat(3, 1fr); }
}
/* スマホ: 2列 */
@media (max-width: 560px) {
  .discography-grid { grid-template-columns: repeat(2, 1fr); }
  .main-songs-grid { grid-template-columns: 1fr; }
}


/* ============================================================
   GALLERY
   ============================================================ */
.gallery { background: var(--color-bg); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.gallery-item {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
}
.gallery-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform 0.4s ease, filter 0.4s ease;
}
.gallery-item:hover img {
  transform: scale(1.05);
  filter: brightness(1.1);
}

.gallery-caption {
  padding: 0.6rem 0.8rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
}


/* ============================================================
   LINKS
   ============================================================ */
.links { background: var(--color-bg-2); }

.links-lead {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.9;
  margin-top: 2rem;
  margin-bottom: 2.5rem;
}

.links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.8rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-bg-card);
  transition: var(--transition);
  min-width: 220px;
}
.link-btn:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.link-btn:focus-visible { outline: 2px solid var(--color-red); outline-offset: 3px; }

.link-btn-icon {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.link-btn-icon svg { width: 20px; height: 20px; }

.link-youtube:hover { border-color: #ff0000; color: #ff4040; }
.link-spotify:hover  { border-color: #1db954; color: #1db954; }
.link-apple:hover    { border-color: #fa57c1; color: #fa57c1; }


/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-block: 3rem;
  text-align: center;
}
.footer-name {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 0.3em;
}
.footer-tagline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.footer-copy {
  font-size: 0.72rem;
  color: var(--color-text-dim);
}


/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.88);
}
.lightbox-content {
  position: relative;
  z-index: 1;
  max-width: min(90vw, 900px);
  max-height: 90vh;
}
.lightbox-content img {
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}
.lightbox-close {
  position: absolute;
  top: -0.75rem;
  right: -0.75rem;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 1.2rem;
  line-height: 1;
  transition: var(--transition);
}
.lightbox-close:hover { background: var(--color-red); border-color: var(--color-red); }


/* ============================================================
   ユーティリティ / アニメーション
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* スクロールフェードイン (JS不要版) */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.section { animation: fadeUp 0.6s ease both; animation-timeline: view(); animation-range: entry 0% cover 20%; }

/* スクロールアニメーション非対応ブラウザ向けフォールバック */
@supports not (animation-timeline: view()) {
  .section { animation: none; opacity: 1; }
}