:root {
  color-scheme: dark light;
  --bg: #0b0b0d;
  --bg-soft: #15161b;
  --card: rgba(20, 21, 25, 0.85);
  --line: rgba(245, 245, 250, 0.12);
  --text: #f1f3f6;
  --muted: #c5cad3;
  --primary: #7b1120;
  --primary-strong: #a51c30;
  --gold: #cc9a3b;
  --silver: #b4bdca;
  --shadow: 0 14px 38px rgba(0, 0, 0, 0.38);
  --radius: 18px;
  --font-head: "BIZ UDPGothic", "Yu Gothic UI", "Hiragino Sans", "Meiryo", sans-serif;
  --font-body: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f0f2f5;
    --bg-soft: #ffffff;
    --card: rgba(255, 255, 255, 0.9);
    --line: rgba(25, 30, 40, 0.12);
    --text: #14171d;
    --muted: #3f4550;
    --primary: #8e1427;
    --primary-strong: #b81c37;
    --gold: #a87a23;
    --silver: #536072;
    --shadow: 0 12px 30px rgba(40, 46, 56, 0.14);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 15% -10%, rgba(165, 28, 48, 0.23), transparent 38%),
    radial-gradient(circle at 90% 5%, rgba(180, 189, 202, 0.14), transparent 32%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.75;
}

img {
  max-width: 100%;
  display: block;
  border-radius: 12px;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: #000;
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  width: clamp(170px, 24vw, 260px);
  border-radius: 0;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
}

.header-nav a {
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #fff;
}

.header-nav a:hover {
  border-color: var(--line);
  background: color-mix(in srgb, var(--primary) 18%, transparent);
}

.hero {
  position: relative;
  min-height: min(96vh, 880px);
  display: grid;
  align-items: end;
  padding: 96px 0 68px;
  background:
    linear-gradient(180deg, rgba(5, 7, 10, 0.04), rgba(6, 8, 12, 0.36)),
    url("../images/kv.JPG") center/cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(5, 5, 7, 0.30) 25%, rgba(5, 5, 7, 0.06) 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 34px;
  max-width: 720px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-soft) 70%, transparent);
  box-shadow: var(--shadow);
}

.eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--silver);
}

h1,
h2,
h3 {
  margin: 0 0 12px;
  line-height: 1.22;
  font-family: var(--font-head);
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2rem, 5.8vw, 4.2rem);
  text-wrap: balance;
}

h1 span {
  color: color-mix(in srgb, var(--gold) 82%, var(--text));
}

h2 {
  font-size: clamp(1.52rem, 3.3vw, 2.4rem);
}

.hero-copy {
  margin: 12px 0 26px;
  font-size: clamp(1.02rem, 2vw, 1.2rem);
  color: var(--muted);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 24px;
  border: 1px solid color-mix(in srgb, var(--gold) 70%, transparent);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: transform 180ms ease, filter 180ms ease;
}

.cta:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.cta.alt {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}

.section {
  padding: clamp(72px, 10vh, 120px) 0;
}

.two-column,
.award-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.image-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 10px;
  box-shadow: var(--shadow);
}

.image-panel img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 16px;
}

.content-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

.content-card .icon {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

.content-card img {
  margin: 10px 0 12px;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.event-header {
  text-align: center;
  padding: 28px 24px;
  margin: 0 0 20px;
  border: 1px solid color-mix(in srgb, var(--gold) 40%, transparent);
  border-radius: var(--radius);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 12%, transparent), color-mix(in srgb, var(--gold) 8%, transparent));
}

.event-header-name {
  margin: 0 0 4px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--silver);
}

.event-header-date {
  margin: 0 0 4px;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  font-family: var(--font-head);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--gold) 82%, var(--text));
}

.event-header-venue {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.eligibility {
  margin: 24px 0 20px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.eligibility h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.eligibility ul {
  margin: 0;
  padding-left: 20px;
}

.eligibility li {
  margin: 6px 0;
}

.schedule-cta-wrap {
  margin: 32px 0 0;
  text-align: center;
}

.schedule-cta-wrap .cta {
  width: 100%;
  max-width: 480px;
  min-height: 60px;
  font-size: 1.2rem;
  padding: 16px 32px;
}

.schedule-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 14px;
}

.slot-card {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
}

.slot-card {
  display: flex;
  flex-direction: column;
}

.slot-time {
  margin: 0 0 6px;
  font-size: 1.2rem;
  font-weight: 700;
  color: color-mix(in srgb, var(--gold) 75%, var(--text));
}

.slot-remaining {
  margin: 10px 0 4px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-strong);
  letter-spacing: 0.04em;
}

.slot-remaining.sold-out {
  color: var(--muted);
}

.slot-cta {
  margin-top: auto;
  padding: 10px 20px;
  font-size: 0.95rem;
  text-align: center;
}

.slot-cta.disabled {
  pointer-events: none;
  opacity: 0.45;
  filter: grayscale(0.6);
  cursor: not-allowed;
}

.detail-list {
  margin: 24px 0 0;
  display: grid;
  gap: 10px;
}

.detail-list div {
  display: grid;
  gap: 2px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg-soft) 82%, transparent);
}

.detail-list dt {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.detail-list dd {
  margin: 0;
}

.section-award {
  background:
    linear-gradient(145deg, rgba(162, 122, 27, 0.2), rgba(122, 17, 32, 0.14)),
    var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.award-prize {
  margin: 0 0 16px;
  font-weight: 700;
  color: color-mix(in srgb, var(--gold) 83%, var(--text));
}

.judge-list {
  margin: 12px 0 12px;
  padding-left: 18px;
}

.judge-list li {
  margin: 4px 0;
}

.note {
  font-size: 0.9rem;
  color: var(--muted);
}

.form-success {
  padding: 40px 24px;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--gold) 40%, transparent);
  background: var(--card);
  box-shadow: var(--shadow);
  text-align: center;
}

.form-success-icon {
  margin: 0 0 12px;
  font-size: 2.8rem;
  color: var(--gold);
}

.form-success h3 {
  font-size: 1.4rem;
  margin: 0 0 12px;
}

.form-success p {
  margin: 0 0 10px;
}

.form-success a {
  color: color-mix(in srgb, var(--gold) 80%, var(--text));
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-success-note {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--muted);
}

.entry-form {
  display: grid;
  gap: 12px;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
}

.entry-form label,
.entry-form legend {
  font-weight: 650;
}

.entry-form input[type="text"],
.entry-form input[type="email"] {
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-soft) 88%, transparent);
  color: var(--text);
  font: inherit;
}

.entry-form fieldset {
  margin: 6px 0 4px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
}

.inline-option {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0;
  font-weight: 500;
}

.inline-option input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-strong);
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  margin: 0 0 10px;
  padding: 12px 16px;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.faq ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.site-footer {
  padding: 52px 0 40px;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-soft) 90%, transparent);
}

.footer-gallery-link {
  display: inline-block;
  margin: 0 0 22px;
  color: color-mix(in srgb, var(--gold) 80%, var(--text));
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.footer-grid h2 {
  font-size: 1.3rem;
}

.small-title {
  margin: 0 0 10px;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.footer-grid a {
  display: block;
  margin: 0 0 8px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.copyright {
  margin: 20px 0 0;
  font-size: 0.86rem;
  color: var(--muted);
}

.gallery-main .section {
  padding-top: 90px;
}

.gallery-title {
  margin-bottom: 6px;
  font-size: clamp(2rem, 5vw, 3.2rem);
}

.gallery-lead {
  margin: 0 0 20px;
  color: var(--muted);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 10px;
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 1px solid var(--line);
}

.back-link-wrap {
  margin: 24px 0 0;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (min-width: 700px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .schedule-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .two-column {
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
  }

  .award-wrap {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }

  .card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal.is-visible,
  .cta {
    transition: none;
    transform: none;
    opacity: 1;
  }
}