:root {
  color-scheme: dark;
  --color-bg: #000000;
  --color-text: #f9f7ed;
  --color-muted: #b4b4b4;
  --color-accent: #ffa671;
  --color-surface: rgba(255, 255, 255, 0.08);
  --font-heading: "Lovelo", "Montserrat", "Noto Sans JP", system-ui, sans-serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --header-height: clamp(3.5rem, 2.5rem + 2vw, 5rem);
  --header-height-scrolled: clamp(3rem, 2rem + 1vw, 4rem);
  --container-max: min(88vw, 960px);
  --transition-base: 220ms ease;
  background-color: var(--color-bg);
  color: var(--color-text);
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: radial-gradient(circle at 20% 20%, rgba(151, 132, 255, 0.18), transparent 45%),
      radial-gradient(circle at 80% 0%, rgba(255, 173, 104, 0.2), transparent 50%),
      radial-gradient(circle at 50% 80%, rgba(74, 103, 241, 0.25), transparent 50%),
      #06070e;
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  letter-spacing: 0.04em;
}

section[id] {
  scroll-margin-top: calc(var(--header-height) + 1.5rem);
}

html.no-js body {
  scroll-behavior: smooth;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}

img {
  max-inline-size: 100%;
  block-size: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 0.2em;
}

a:hover,
a:focus-visible {
  color: var(--color-accent);
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: clamp(1.6rem, 1.4rem + 0.6vw, 2.4rem);
  padding-block: clamp(0.6rem, 0.5rem + 0.3vw, 1rem);
  border: 1px solid currentColor;
  font-family: var(--font-heading);
  font-size: clamp(0.95rem, 0.88rem + 0.3vw, 1.1rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.button--primary {
  background-color: var(--color-accent);
  color: #1f150a;
  border-color: transparent;
}

.button--primary:hover,
.button--primary:focus-visible {
  background-color: #ffb88f;
  color: #1f150a;
}

.button--ghost {
  color: var(--color-text);
  border-color: color-mix(in srgb, var(--color-text) 40%, transparent);
}

.button--ghost:hover,
.button--ghost:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 10;
  transition: background-color var(--transition-base), backdrop-filter var(--transition-base), block-size var(--transition-base);
  block-size: var(--header-height);
  display: flex;
  align-items: center;
}

.site-header::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  block-size: 1px;
  background: color-mix(in srgb, var(--color-text) 20%, transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.site-header__inner {
  margin-inline: auto;
  inline-size: min(92vw, 1120px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.site-header__nav {
  margin-inline-start: auto;
  min-inline-size: 0;
}

.site-header__nav-list {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.6rem, 0.4rem + 1vw, 1.4rem);
  list-style: none;
  margin: 0;
  padding: 0.2rem 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-header__nav-list::-webkit-scrollbar {
  display: none;
}

.site-header__nav-link {
  font-family: var(--font-heading);
  font-size: clamp(0.75rem, 0.68rem + 0.3vw, 0.95rem);
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 80%, transparent);
  white-space: nowrap;
  transition: color var(--transition-base);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-accent);
}

.site-header__logo {
  display: none;
}

.site-header__logo::before {
  content: url("assets/design/2.png");
  display: inline-block;
  inline-size: clamp(60px, 10vw, 90px);
  block-size: auto;
}

.site-header--scrolled {
  background-color: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(12px);
  block-size: var(--header-height-scrolled);
}

.site-header--scrolled::after {
  opacity: 1;
}

.hero {
  position: relative;
  min-block-size: clamp(25vh, 22vh + 4vw, 35vh);
  display: grid;
  place-items: center;
  padding-block-start: calc(var(--header-height) + clamp(1.5rem, 1.2rem + 1vw, 2.5rem));
  padding-block-end: clamp(3rem, 2.5rem + 2vw, 5rem);
  padding-inline: 1vw;
  text-align: center;
  color: #f9f7ed;
  background-color: #020311;
  background-image: linear-gradient(rgba(0, 0, 0, 0.18), rgba(0, 0, 0, 0.18)),
    url("assets/design/PK_hero_image_1920.png");
  background-position: center;
  background-size: cover;
  overflow: hidden;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 35%, rgba(255, 166, 113, 0.38), transparent 60%);
  mix-blend-mode: screen;
  z-index: 0;
}

/* .hero__visual {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 1;
} */

/* .hero__visual img {
  inline-size: clamp(520px, 90vw, 1180px);
  max-inline-size: calc(100vw - 2.5rem);
  block-size: auto;
  filter: drop-shadow(0 32px 60px rgba(0, 0, 0, 0.45));
} */

/* .hero__content {
  position: relative;
  max-inline-size: 320px;
  display: grid;
  gap: clamp(1rem, 0.9rem + 1vw, 2rem);
  z-index: 2;
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 900ms ease, transform 900ms ease;
} */

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

.hero__eyebrow {
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 1.1rem + 1vw, 2rem);
  letter-spacing: 0.4em;
  text-transform: uppercase;
  margin: 0;
}

.hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1;
  display: grid;
  gap: clamp(0.4rem, 0.3rem + 0.4vw, 0.8rem);
}

.hero__title-line {
  font-size: clamp(3.4rem, 2.5rem + 6vw, 8rem);
  letter-spacing: 0.25em;
}

.hero__title-sub {
  font-size: clamp(1.2rem, 1rem + 1.4vw, 2.4rem);
  letter-spacing: 0.6em;
  text-transform: uppercase;
}

.hero__lead {
  margin: 0;
  font-size: clamp(1rem, 0.9rem + 0.8vw, 1.6rem);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(0.8rem, 0.6rem + 0.6vw, 1.2rem);
}

.section-title {
  font-family: var(--font-heading);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: clamp(1.4rem, 1.2rem + 1vw, 2.2rem);
  margin-block: 0 1.5rem;
}

.event {
  padding-block: clamp(3.5rem, 3rem + 3vw, 6rem);
  border-block: 1px solid color-mix(in srgb, var(--color-text) 25%, transparent);
}

.event__inner {
  margin-inline: auto;
  inline-size: var(--container-max);
  display: grid;
  gap: clamp(2rem, 1.5rem + 1vw, 3rem);
}

.event__dl {
  display: grid;
  gap: clamp(1rem, 0.9rem + 0.4vw, 1.6rem);
  margin: 0;
}

.event__item {
  display: grid;
  gap: 0.3rem;
}

.event__item dt {
    font-weight: 600;
    color: rgba(247, 194, 107, 0.9);
    letter-spacing: 0.1em;
}

.event__item dd {
  margin: 0;
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.6rem);
  font-weight: 600;
}

.event__item--program dd {
  font-size: 1rem;
  font-weight: 400;
}

.event__program {
  display: grid;
  gap: 1rem;
}

.event__program-list {
  display: grid;
  gap: clamp(0.9rem, 0.8rem + 0.4vw, 1.4rem);
}

.event__program-row {
  display: grid;
  gap: 0.4rem;
  font-size: clamp(1rem, 0.95rem + 0.4vw, 1.3rem);
}

.event__program-title {
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.event__program-subtitle {
  font-size: 0.98rem;
  color: color-mix(in srgb, var(--color-text) 60%, transparent);
  letter-spacing: 0.06em;
}

.conductor {
  padding-block: clamp(3.5rem, 3rem + 3vw, 6rem);
}

.conductor__inner {
  margin-inline: auto;
  inline-size: min(92vw, 1040px);
  display: grid;
  gap: clamp(2rem, 1.5rem + 1vw, 3rem);
  align-items: start;
}

.conductor__media {
  position: relative;
  max-inline-size: 420px;
}

.conductor__figure {
  margin: 0;
  border-radius: 1.2rem;
  overflow: hidden;
  background: linear-gradient(160deg, rgba(255, 166, 113, 0.2), rgba(15, 18, 60, 0.4));
}

.conductor__figure img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.9);
}

.conductor__content {
  display: grid;
  gap: clamp(1rem, 0.9rem + 0.4vw, 1.5rem);
}

.conductor__name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 1.4rem + 0.6vw, 2rem);
  letter-spacing: 0.08em;
}

.conductor__lead {
  margin: 0;
  font-size: clamp(1rem, 0.95rem + 0.4vw, 1.3rem);
  font-style: italic;
}

.conductor__bio {
  margin: 0;
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.1rem);
}

.conductor__details {
  display: grid;
  gap: clamp(0.8rem, 0.7rem + 0.4vw, 1.3rem);
  margin: 0;
}

.conductor__details-item {
  display: grid;
  gap: 0.3rem;
}

.conductor__details-item dt {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 45%, transparent);
}

.conductor__details-item dd {
  margin: 0;
}

.conductor__sns {
  display: flex;
  gap: 1rem;
}

.conductor__sns-link {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-family: var(--font-heading);
  font-size: 0.95rem;
}

.about {
  background-color: rgba(11, 12, 25, 0.7);
  padding-block: clamp(3.5rem, 3rem + 3vw, 6rem);
}

.about__inner {
  margin-inline: auto;
  inline-size: var(--container-max);
  display: grid;
  gap: clamp(1.6rem, 1.3rem + 1vw, 2.6rem);
}

.about__text {
  margin: 0;
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.2rem);
  background: rgba(19, 23, 46, 0.72);
  padding: clamp(24px, 5vw, 48px);
  line-height: 1.75;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);}

/* Accent for key phrase inside about text */
.about__text .about__accent {
  /* revert background and font color to default, use accent-colored underline */
  color: inherit;
  background: none;
  text-decoration-line: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  /* allow margin-bottom to create space under the phrase */
  display: inline-block;
  margin-bottom: 0.4rem;
  padding: 0;
  border-radius: 0;
  line-height: inherit;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.04em;
  text-shadow: 0 0 2rem rgba(255, 166, 113, 0.95);
}

.access {
  padding-block: clamp(3.5rem, 3rem + 3vw, 6rem);
}

/* Organization (団体概要) — subtle gradient card matching site tone */
.organization {
  padding-block: clamp(3.5rem, 3rem + 3vw, 6rem);
}

.organization .section-inner {
  margin-inline: auto;
  inline-size: var(--container-max);
    /* warm, fire-like radial glow from the bottom center */
    background: radial-gradient(circle at 65% 90%, rgba(255, 173, 104 , 0.1) 0%, rgba(157, 155, 255, 0.1) 20%, rgba(157,155,255,0.06) 40%, transparent 60%),
                color-mix(in srgb, rgba(157, 155, 255, 0.01) 75%, var(--color-muted) 3%);

/* small note under organization content */
.organization__note {
  margin: 1.5rem 0 0;
  font-size: 0.65rem;
  color: color-mix(in srgb, var(--color-muted) 90%, transparent);
  opacity: 0.95;
}
  padding: clamp(1.6rem, 1.2rem + 1vw, 2.4rem);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  border: 1px solid color-mix(in srgb, var(--color-bg) 12%, transparent);
}
  /* Slightly smaller body text inside the organization card */
  .organization .section-inner p {
    margin: 0 0 1rem;
    font-size: clamp(0.8rem, 0.8rem + 0.1vw, 1.02rem);
    line-height: 1.65;
    color: color-mix(in srgb, var(--color-text) 92%, transparent);
  }

.access__inner {
  margin-inline: auto;
  inline-size: min(94vw, 1100px);
  display: grid;
  gap: clamp(2rem, 1.5rem + 1vw, 3rem);
}

.access__grid {
  display: grid;
  gap: clamp(1.5rem, 1.2rem + 1vw, 2.5rem);
  align-items: start;
}

.access__map {
  position: relative;
  padding-block-end: 62.5%;
  border: 1px solid color-mix(in srgb, var(--color-text) 25%, transparent);
  background: linear-gradient(135deg, rgba(255, 166, 113, 0.2), rgba(4, 7, 35, 0.5));
}

.access__map iframe {
  position: absolute;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
}

.access__content {
  display: grid;
  gap: clamp(1rem, 0.9rem + 0.4vw, 1.4rem);
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.1rem);
}

.access__details {
  margin: 0;
  display: grid;
  gap: 1rem;
}

.access__details-item dt {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 45%, transparent);
}

.access__details-item dd {
  margin: 0;
  font-weight: 600;
}

.access__note {
  margin: 0;
  font-size: 0.9rem;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}

.access__links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.updates {
  padding-block: clamp(3.5rem, 3rem + 3vw, 6rem);
  border-block: 1px solid color-mix(in srgb, var(--color-text) 25%, transparent);
}

.updates__inner {
  margin-inline: auto;
  inline-size: var(--container-max);
  display: grid;
  gap: clamp(1.6rem, 1.3rem + 1vw, 2.6rem);
}

.updates__intro {
  margin: 0;
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.15rem);
}

.updates__form {
  display: grid;
  gap: 0.8rem;
}

.updates__label {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.updates__fields {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 1fr;
}

.updates__input {
  padding-inline: 1rem;
  padding-block: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--color-text) 30%, transparent);
  background-color: transparent;
  color: inherit;
  font-size: 1rem;
  border-radius: 0;
}

.updates__input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.updates__sns {
  display: flex;
  gap: 1.2rem;
  font-family: var(--font-heading);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.faq {
  padding-block: clamp(3.5rem, 3rem + 3vw, 6rem);
}

.faq__inner {
  margin-inline: auto;
  inline-size: var(--container-max);
  display: grid;
  gap: clamp(1.6rem, 1.3rem + 1vw, 2.6rem);
}

.faq__list {
  border-block: 1px solid color-mix(in srgb, var(--color-text) 25%, transparent);
}

.faq__item:not(:last-child) {
  border-block-end: 1px solid color-mix(in srgb, var(--color-text) 20%, transparent);
}

.faq__trigger {
  inline-size: 100%;
  text-align: start;
  padding-block: clamp(1.1rem, 1rem + 0.4vw, 1.6rem);
  padding-inline: 0;
  font-size: clamp(1rem, 0.95rem + 0.4vw, 1.3rem);
  letter-spacing: 0.04em;
}

.faq__trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.faq__panel {
  padding-block-end: clamp(1rem, 0.9rem + 0.4vw, 1.5rem);
}

.faq__panel p {
  margin: 0;
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.1rem);
}

.skyline {
  inline-size: 100%;
  block-size: clamp(120px, 18vw, 220px);
  background-image: url("assets/design/PKチラシラフA4夜空 (プレゼンテーション) (1).png");
  background-size: cover;
  background-position: center bottom;
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 1) 30%, rgba(0, 0, 0, 0) 100%);
}

.site-footer {
  background-color: #000000;
  color: #f9f7ed;
  padding-block: clamp(1.5rem, 1.3rem + 0.6vw, 2.3rem);
}

.site-footer__inner {
  margin-inline: auto;
  inline-size: min(92vw, 960px);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
}

.site-footer__link {
  color: inherit;
}

.toast {
  position: fixed;
  inset-inline-end: clamp(1rem, 4vw, 3rem);
  inset-block-end: clamp(1rem, 4vw, 3rem);
  background-color: color-mix(in srgb, var(--color-bg) 85%, #000 15%);
  color: inherit;
  padding: 1rem 1.5rem;
  border: 1px solid color-mix(in srgb, var(--color-text) 25%, transparent);
  letter-spacing: 0.04em;
  font-size: 0.95rem;
  max-inline-size: 22rem;
  transition: opacity var(--transition-base), transform var(--transition-base);
  opacity: 0;
  transform: translateY(20%);
}

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

@media (min-width: 720px) {
  .hero {
    text-align: left;
    place-items: center start;
    padding-inline: clamp(8vw, 6vw + 3rem, 16vw);
  }

  .hero__cta {
    justify-content: flex-start;
  }

  .conductor__inner {
    grid-template-columns: minmax(240px, 0.9fr) minmax(280px, 1.1fr);
  }

  .access__grid {
    grid-template-columns: minmax(300px, 1fr) minmax(280px, 0.9fr);
  }

  .updates__fields {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}