/* =========================================================
   大和大学 第13回 和纏祭 ARTIST LIVE — BERRY GOODMAN
   カラースキーム: 情熱の紅 × 漆黒ステージ
========================================================= */

:root {
  --color-bg: #0b0b0f;
  --color-surface: #17171d;
  --color-surface-2: #1f1f27;
  --color-flame-1: #ff3b3b;
  --color-flame-2: #ff8a1e;
  --color-gold: #f5c242;
  --color-text: #f5f5f0;
  --color-text-dim: #b8b8c0;
  --color-border: rgba(245, 245, 240, 0.12);

  --gradient-flame: linear-gradient(90deg, var(--color-flame-1), var(--color-flame-2));
  --gradient-flame-v: linear-gradient(180deg, var(--color-flame-1), var(--color-flame-2));

  --font-display: "Anton", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans JP", sans-serif;

  --header-height: 64px;
  --container-max: 1100px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

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

/* subtle film-grain texture so flat gradients don't read as too "generated" */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.045;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.section {
  padding: 88px 20px;
  position: relative;
}

.section-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 44px;
}

.section-title__bar {
  width: 5px;
  align-self: stretch;
  min-height: 46px;
  border-radius: 3px;
  background: var(--gradient-flame-v);
  flex-shrink: 0;
}

.section-title__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.section-title__en {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 5.5vw, 2.4rem);
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.section-title__ja {
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--color-text-dim);
}

/* =========================================================
   HEADER
========================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  background-color: rgba(11, 11, 15, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.header-inner {
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  height: 38px;
  width: 38px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-main {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
}

.brand-sub {
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  color: var(--color-text-dim);
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background: rgba(11, 11, 15, 0.98);
  flex-direction: column;
  padding: 24px 20px 32px;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  border-bottom: 1px solid var(--color-border);
}

.nav.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-link {
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  padding: 8px 0;
}

.nav-toggle {
  width: 32px;
  height: 24px;
  background: none;
  border: none;
  position: relative;
  cursor: pointer;
}

.nav-toggle span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 11px; }
.nav-toggle span:nth-child(3) { top: 22px; }

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(11px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-11px) rotate(-45deg);
}

/* =========================================================
   CTA BUTTON
========================================================= */
.cta-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 999px;
  background: var(--gradient-flame);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 20px rgba(255, 59, 59, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
  overflow: hidden;
}

.cta-btn:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 28px rgba(255, 138, 30, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.45);
  filter: brightness(1.08);
}

.cta-btn--nav {
  margin-top: 8px;
}

.cta-btn--large {
  padding: 16px 40px;
  font-size: 1rem;
}

/* =========================================================
   HERO
========================================================= */
.hero {
  position: relative;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 56px;
  background:
    radial-gradient(ellipse 70% 45% at 50% 0%, rgba(255, 59, 59, 0.16) 0%, transparent 70%),
    var(--color-bg);
  overflow: hidden;
}

.hero-top {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 36px;
  text-align: center;
}

.hero-badge {
  display: flex;
  justify-content: center;
  margin-bottom: 18px;
}

.hero-badge span {
  display: inline-flex;
  align-items: center;
  padding: 8px 22px;
  border-radius: 999px;
  background: var(--gradient-flame);
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 3.2vw, 1.15rem);
  letter-spacing: 0.06em;
  box-shadow: 0 0 0 0 rgba(255, 90, 30, 0.5), 0 6px 20px rgba(255, 90, 30, 0.4);
  animation: badge-pulse 2.2s ease-out infinite;
}

@keyframes badge-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 90, 30, 0.5), 0 6px 20px rgba(255, 90, 30, 0.4); }
  70% { box-shadow: 0 0 0 12px rgba(255, 90, 30, 0), 0 6px 20px rgba(255, 90, 30, 0.4); }
  100% { box-shadow: 0 0 0 0 rgba(255, 90, 30, 0), 0 6px 20px rgba(255, 90, 30, 0.4); }
}

.hero-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-bottom: 14px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 11vw, 4.8rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  background: var(--gradient-flame);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 16px;
}

.hero-slogan {
  font-size: clamp(1rem, 3.6vw, 1.3rem);
  font-weight: 700;
}

.hero-slogan .accent {
  color: var(--color-gold);
}

.hero-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 2480 / 1476;
  overflow: hidden;
  border-top: 2px solid;
  border-bottom: 2px solid;
  border-image: var(--gradient-flame) 1;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.7);
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.05);
}

.hero-photo::before,
.hero-photo::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 22%;
  pointer-events: none;
  z-index: 1;
}

.hero-photo::before {
  top: 0;
  background: linear-gradient(180deg, var(--color-bg), transparent);
}

.hero-photo::after {
  bottom: 0;
  background: linear-gradient(0deg, var(--color-bg), transparent);
}

.hero-photo.img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  aspect-ratio: 16 / 9;
}

.hero-photo.img-fallback::before,
.hero-photo.img-fallback::after {
  content: none;
}

.hero-photo.img-fallback::before {
  content: "BERRY GOODMAN";
  position: static;
  font-family: var(--font-display);
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
  background: none;
  height: auto;
}

.hero-bottom {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-dates {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 20px;
}

.date-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.03);
}

.date-badge--live {
  border-color: transparent;
  background: var(--gradient-flame);
  box-shadow: 0 0 30px rgba(255, 90, 30, 0.5);
}

.date-badge__day {
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.date-badge__label {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
}

.date-badge--live .date-badge__label {
  color: rgba(255, 255, 255, 0.85);
}

.date-badge__tag {
  font-size: 0.55rem;
  letter-spacing: 0.05em;
  margin-top: 2px;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.25);
}

.hero-time {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--color-gold);
  margin-bottom: 6px;
}

.hero-note {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-bottom: 28px;
}

.scroll-cue {
  position: relative;
  z-index: 1;
  margin: 44px auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--color-text-dim);
  width: fit-content;
}

.scroll-cue i {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, var(--color-gold), transparent);
  animation: scroll-cue-move 1.6s ease-in-out infinite;
}

@keyframes scroll-cue-move {
  0% { transform: scaleY(0.2); transform-origin: top; opacity: 0.3; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(0.2); transform-origin: bottom; opacity: 0.3; }
}

/* =========================================================
   ARTIST
========================================================= */
.artist-photo {
  width: 100%;
  aspect-ratio: 2480 / 1476;
  border-radius: 16px;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.7);
  margin-bottom: 32px;
}

.artist-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.artist-photo.img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
}

.artist-photo.img-fallback::after {
  content: "BERRY GOODMAN";
  font-family: var(--font-display);
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
}

.artist-profile {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.artist-name {
  font-family: var(--font-display);
  font-size: 1.8rem;
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}

.artist-desc {
  color: var(--color-text-dim);
  margin-bottom: 24px;
}

.sns-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.sns-links--center {
  justify-content: center;
}

.sns-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.sns-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.sns-link:hover {
  border-color: transparent;
  background: var(--gradient-flame);
  transform: translateY(-2px);
}

.mv-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto 56px;
}

.mv-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: 0 20px 40px -24px rgba(0, 0, 0, 0.7);
}

.mv-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.mv-caption {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--color-text-dim);
  text-align: center;
  letter-spacing: 0.02em;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--color-border);
  padding-left: 24px;
  max-width: 720px;
  margin: 0 auto;
}

.timeline__item {
  position: relative;
  padding: 0 0 32px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-flame);
  box-shadow: 0 0 0 4px var(--color-bg);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__year {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-gold);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.timeline__text {
  display: block;
  color: var(--color-text-dim);
  font-size: 0.92rem;
}

/* =========================================================
   EVENT INFO
========================================================= */
.event-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.event-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 20px 40px -28px rgba(0, 0, 0, 0.7);
}

.event-card--wide {
  grid-column: 1 / -1;
}

.event-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  color: var(--color-gold);
}

.event-card__body {
  margin-bottom: 8px;
}

.event-card__note {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.event-card__note--access {
  margin-top: 4px;
}

.event-card__note + .event-card__note {
  margin-top: 6px;
}

.venue-photo {
  margin-top: 16px;
  aspect-ratio: 3 / 2;
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-surface-2);
}

.venue-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.venue-photo.img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
}

.venue-photo.img-fallback::after {
  content: "大和アリーナ";
  color: var(--color-text-dim);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.map-embed {
  margin-top: 16px;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
}

.link-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.link-btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  font-size: 0.85rem;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.link-btn:hover {
  border-color: transparent;
  background: var(--gradient-flame);
  transform: translateY(-2px);
}

/* =========================================================
   TICKETS
========================================================= */
.tickets-teaser {
  position: relative;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 64px 24px;
  box-shadow: 0 24px 48px -28px rgba(0, 0, 0, 0.7);
}

.tickets-teaser::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--gradient-flame);
}

.ticket-status {
  display: inline-flex;
  align-items: center;
  padding: 8px 22px;
  border-radius: 999px;
  background: var(--gradient-flame);
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 3.2vw, 1.15rem);
  letter-spacing: 0.06em;
  box-shadow: 0 6px 20px rgba(255, 90, 30, 0.4);
  margin-bottom: 32px;
}

.ticket-plans {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 640px;
  margin: 0 auto 28px;
  text-align: left;
}

.ticket-plan {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 22px;
}

.ticket-plan__name {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.ticket-plan__price {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--color-gold);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.ticket-plan__price span {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-left: 4px;
}

.ticket-plan__note {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.ticket-period {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 28px;
  line-height: 1.6;
}

.ticket-caveat {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-top: 14px;
}

.ticket-notes {
  max-width: 640px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ticket-notes li {
  position: relative;
  padding-left: 16px;
  font-size: 0.78rem;
  color: var(--color-text-dim);
  line-height: 1.6;
}

.ticket-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-gold);
}

.tickets-sub {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 4px;
  margin-top: 36px;
}

.tickets-sub + .sns-links {
  margin-top: 24px;
}

/* =========================================================
   FOOTER
========================================================= */
.site-footer {
  padding: 56px 20px 32px;
  border-top: 1px solid var(--color-border);
  background: #060608;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer-logo img {
  max-height: 64px;
  width: auto;
}

.footer-brand {
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  color: var(--color-text-dim);
}

.footer-sns {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.footer-sns__group {
  text-align: center;
}

.footer-sns__group h4 {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--color-text-dim);
  margin-bottom: 12px;
  font-weight: 500;
}

.footer-sns__group .sns-links {
  justify-content: center;
}

.copyright {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

/* =========================================================
   SCROLL REVEAL ANIMATION
========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   RESPONSIVE — tablet & up
========================================================= */
@media (min-width: 768px) {
  .nav {
    position: static;
    flex-direction: row;
    background: none;
    border-bottom: none;
    padding: 0;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    width: auto;
  }

  .nav-toggle {
    display: none;
  }

  .hero-photo {
    max-width: 1100px;
    margin: 0 auto;
    border-radius: 20px;
    border-left: 2px solid;
    border-right: 2px solid;
  }

  .event-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .mv-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ticket-plans {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 120px 20px;
  }

  .artist-photo {
    border-radius: 20px;
  }
}