/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0a0a0f;
  --bg2:        #0f0f18;
  --bg3:        #13131e;
  --red:        #8b0000;
  --red-bright: #c0392b;
  --red-glow:   #e74c3c;
  --gold:       #d4a017;
  --gold-light: #f0c040;
  --white:      #f0ede8;
  --muted:      #8a8080;
  --border:     rgba(139, 0, 0, 0.25);
  --font-head:  'Cinzel', serif;
  --font-body:  'Crimson Text', serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--red); border-radius: 3px; }

/* ===== NAVBAR ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 2rem;
  background: transparent;
  transition: background 0.4s, box-shadow 0.4s;
}
#navbar.scrolled {
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 30px rgba(139, 0, 0, 0.2);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s;
}
.nav-logo:hover { color: var(--gold-light); }
.nav-logo-kanji {
  font-size: 1.5rem;
  line-height: 1;
  filter: drop-shadow(0 0 6px rgba(212, 160, 23, 0.6));
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  opacity: 0.75;
  transition: opacity 0.2s, color 0.2s;
}
.nav-links a:hover { opacity: 1; color: var(--gold); }
.nav-links .nav-cta {
  opacity: 1;
  border: 1px solid var(--red);
  padding: 0.4rem 1.1rem;
  border-radius: 2px;
  color: var(--red-glow);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.nav-links .nav-cta:hover {
  background: var(--red);
  color: var(--white);
  box-shadow: 0 0 16px rgba(192, 57, 43, 0.5);
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--red) 0%, var(--red-bright) 100%);
  color: var(--white);
  border: none;
  padding: 0.85rem 2.2rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
  transition: box-shadow 0.3s, transform 0.2s;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}
.btn-primary:hover {
  box-shadow: 0 0 30px rgba(192, 57, 43, 0.7), 0 0 60px rgba(192, 57, 43, 0.3);
  transform: translateY(-1px);
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:active { transform: translateY(0); }

/* ===== HERO ===== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 40%, #1a0510 0%, #0a0a0f 70%);
}
#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 60% 50% at 50% 60%, rgba(139, 0, 0, 0.18) 0%, transparent 70%),
    linear-gradient(to bottom, transparent 60%, var(--bg) 100%);
}

/* Shuriken */
.shuriken {
  position: absolute;
  z-index: 2;
  color: rgba(139, 0, 0, 0.18);
  pointer-events: none;
}
.shuriken svg { display: block; }
.shuriken-tl {
  top: 12%;
  left: 8%;
  width: 120px;
  animation: spin 20s linear infinite;
}
.shuriken-br {
  bottom: 14%;
  right: 8%;
  width: 90px;
  animation: spin 14s linear infinite reverse;
}
@keyframes spin { to { transform: rotate(360deg); } }

.kunai {
  position: absolute;
  z-index: 2;
  color: rgba(212, 160, 23, 0.15);
  pointer-events: none;
}
.kunai svg { display: block; }
.kunai-left {
  top: 20%;
  right: 14%;
  width: 30px;
  animation: kunai-float 6s ease-in-out infinite;
}
@keyframes kunai-float {
  0%, 100% { transform: translateY(0) rotate(-15deg); }
  50%       { transform: translateY(-18px) rotate(-10deg); }
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 2rem 1rem;
  max-width: 800px;
}
.hero-eyebrow {
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  opacity: 0.8;
  margin-bottom: 1.5rem;
  animation: fadeDown 1s ease both;
}
.hero-title {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 0.88;
  margin-bottom: 1.5rem;
  animation: fadeDown 1s ease 0.2s both;
}
.hero-title-line1 {
  display: block;
  font-size: clamp(5rem, 18vw, 13rem);
  letter-spacing: 0.08em;
  color: var(--white);
  text-shadow:
    0 0 40px rgba(192, 57, 43, 0.5),
    0 0 80px rgba(192, 57, 43, 0.2),
    0 4px 0 rgba(0,0,0,0.6);
}
.hero-title-line2 {
  display: block;
  font-size: clamp(3.5rem, 12vw, 8.5rem);
  letter-spacing: 0.35em;
  color: transparent;
  -webkit-text-stroke: 2px var(--gold);
  text-shadow: 0 0 30px rgba(212, 160, 23, 0.4);
}
.hero-tagline {
  font-family: var(--font-head);
  font-size: clamp(0.9rem, 2.5vw, 1.25rem);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  animation: fadeDown 1s ease 0.4s both;
}
.hero-sub {
  font-family: var(--font-body);
  font-size: 1.15rem;
  color: rgba(240, 237, 232, 0.65);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  animation: fadeDown 1s ease 0.55s both;
}
.hero-cta {
  animation: fadeDown 1s ease 0.7s both;
  font-size: 0.9rem;
  padding: 1rem 2.8rem;
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.4;
  animation: fadeIn 2s ease 1.5s both;
}
.hero-scroll-hint span {
  font-family: var(--font-head);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.2); transform-origin: top; }
}

/* ===== SECTION SHARED ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section-label {
  font-family: var(--font-head);
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--red-bright);
  margin-bottom: 0.75rem;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 2.5rem;
  text-shadow: 0 0 20px rgba(212, 160, 23, 0.25);
}

/* ===== ABOUT ===== */
.section-about {
  padding: 7rem 0;
  background: linear-gradient(to bottom, var(--bg) 0%, var(--bg2) 100%);
  border-top: 1px solid var(--border);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-text p { margin-bottom: 1.2rem; color: rgba(240, 237, 232, 0.82); }
.about-text strong { color: var(--gold); }
.about-text em { color: var(--red-glow); font-style: italic; }
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
}
.stat-item {
  text-align: center;
  padding: 1.5rem 1rem;
  border: 1px solid var(--border);
  background: rgba(139, 0, 0, 0.06);
  position: relative;
  overflow: hidden;
}
.stat-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--red), transparent);
}
.stat-number {
  display: block;
  font-family: var(--font-head);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--red-glow);
  line-height: 1.2;
}
.stat-label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ===== FEATURES ===== */
.section-features {
  padding: 7rem 0;
  background: var(--bg2);
  border-top: 1px solid var(--border);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
@media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features-grid { grid-template-columns: 1fr; } }

.feature-card {
  padding: 2rem 1.75rem;
  background: rgba(10, 10, 15, 0.6);
  border: 1px solid var(--border);
  position: relative;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(139, 0, 0, 0.12) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}
.feature-card:hover {
  border-color: rgba(192, 57, 43, 0.6);
  box-shadow: 0 0 30px rgba(139, 0, 0, 0.25), 0 4px 20px rgba(0,0,0,0.4);
  transform: translateY(-4px);
}
.feature-card:hover::after { opacity: 1; }
.feature-icon {
  width: 52px;
  height: 52px;
  color: var(--red-bright);
  margin-bottom: 1.2rem;
  transition: color 0.3s, filter 0.3s;
}
.feature-card:hover .feature-icon {
  color: var(--gold);
  filter: drop-shadow(0 0 8px rgba(212, 160, 23, 0.5));
}
.feature-card h3 {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.08em;
  margin-bottom: 0.7rem;
}
.feature-card p {
  font-size: 0.95rem;
  color: rgba(240, 237, 232, 0.65);
  line-height: 1.6;
}

/* ===== GALLERY ===== */
.section-gallery {
  padding: 7rem 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.gallery-sub-label {
  font-family: var(--font-head);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.gallery-grid-videos {
  grid-template-columns: repeat(2, 1fr);
}
@media (max-width: 900px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid-videos { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .gallery-grid { grid-template-columns: 1fr; }
}
.gallery-item {
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
  overflow: hidden;
  position: relative;
  background: var(--bg2);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.gallery-item img,
.gallery-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.gallery-item:hover img,
.gallery-item:hover video {
  transform: scale(1.04);
}
.gallery-item:hover {
  border-color: rgba(192, 57, 43, 0.5);
  box-shadow: 0 0 20px rgba(139, 0, 0, 0.2);
}
.gallery-item.placeholder {
  cursor: default;
}
.gallery-placeholder-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: rgba(240, 237, 232, 0.15);
}
.gallery-placeholder-inner svg {
  width: 40px;
  height: 40px;
}
.gallery-placeholder-inner span {
  font-family: var(--font-head);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ===== REGISTER ===== */
.section-register {
  padding: 7rem 0;
  background: linear-gradient(to bottom, var(--bg2) 0%, var(--bg) 100%);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.register-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(139, 0, 0, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.register-sub {
  max-width: 540px;
  margin: 0 auto 1.5rem;
  color: rgba(240, 237, 232, 0.7);
  font-size: 1.1rem;
}
.counter-display {
  font-family: var(--font-head);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 2.5rem;
  min-height: 1.4em;
}
#counter-number {
  color: var(--gold);
  font-weight: 600;
}
.register-form { max-width: 520px; margin: 0 auto; }
.form-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  transition: border-color 0.3s, box-shadow 0.3s;
}
.form-group:focus-within {
  border-color: rgba(192, 57, 43, 0.6);
  box-shadow: 0 0 20px rgba(139, 0, 0, 0.2);
}
#email-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 1rem 1.4rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
}
#email-input::placeholder { color: rgba(240, 237, 232, 0.3); }
#submit-btn {
  clip-path: none;
  border-radius: 0;
  padding: 0.85rem 1.8rem;
  flex-shrink: 0;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  position: relative;
}
#submit-btn.loading .btn-text { opacity: 0; }
#submit-btn.loading .btn-loader { opacity: 1; }
.btn-loader {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  opacity: 0;
  transition: opacity 0.2s;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.form-message {
  margin-top: 1rem;
  font-size: 0.95rem;
  min-height: 1.4em;
  letter-spacing: 0.02em;
}
.form-message.success { color: #6fcf8a; }
.form-message.error   { color: var(--red-glow); }
.register-note {
  margin-top: 1.5rem;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ===== FOOTER ===== */
#footer {
  padding: 2.5rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-inner { max-width: 1100px; margin: 0 auto; }
.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.footer-kanji { font-size: 1.4rem; opacity: 0.7; }
.footer-domain {
  font-size: 0.8rem;
  color: var(--red-bright);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.footer-copy { font-size: 0.8rem; color: var(--muted); }

/* ===== REVEAL ANIMATIONS ===== */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-card {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-card.visible { opacity: 1; transform: translateY(0); }

/* ===== MOBILE NAV ===== */
@media (max-width: 600px) {
  .nav-links { gap: 1rem; }
  .nav-links li:not(:last-child) { display: none; }
  .hero-title-line2 { letter-spacing: 0.2em; }
}