@charset "utf-8";
/* CSS Document */

:root {
  --bg: #0b0b12;
  --fg: #ffffff;
  --muted: #c9c9d3;
  --primary: #ff4fd8;   /* ネオンピンク */
  --secondary: #42d2ff; /* ネオンシアン */
  --accent: #ffd84f;    /* ネオンイエロー */
  --card: #141424;
  --border: #24243a;
  --success: #45d19e;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
img { max-width: 100%; display: block; border-radius: 12px; }
a { color: var(--secondary); text-decoration: none; }
.container { width: min(1100px, 92%); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: linear-gradient(180deg, rgba(11,11,18,0.9), rgba(11,11,18,0.4));
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; }
.logo { display: flex; align-items: center; gap: 10px; font-family: Poppins, system-ui, sans-serif; font-weight: 800; }
.logo-mark { color: var(--accent); filter: drop-shadow(0 0 6px var(--accent)); }
.logo-text { letter-spacing: 1px; }
.nav a { margin-left: 18px; }
.nav .btn-nav {
  padding: 8px 14px; border: 1px solid var(--secondary); border-radius: 999px;
}
.nav-toggle { display: none; background: none; border: none; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--fg); margin: 5px 0; }

/* Hero */
.hero { position: relative; min-height: 70vh; display: grid; place-items: center; text-align: center; overflow: clip; }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(0.45) saturate(1.2); }
.hero-overlay { position: absolute; inset: 0; background: radial-gradient(1200px 600px at 50% 60%, rgba(255,79,216,0.25), transparent 60%), radial-gradient(800px 400px at 30% 40%, rgba(66,210,255,0.25), transparent 60%); }
.hero-content { position: relative; padding: 100px 0 60px; }
.hero-content h1 {
  color: #fff;
  text-shadow:
    0 0 10px rgba(255, 255, 255, 0.8),
    0 0 20px rgba(255, 255, 255, 0.6),
    0 0 30px rgba(255, 0, 150, 0.5),
    0 0 40px rgba(255, 0, 150, 0.4);
  animation: glow 2.5s ease-in-out infinite alternate;
}

.hero-content h2 {
  color: #fff;
  text-shadow:
    0 0 10px rgba(255, 255, 255, 0.8),
    0 0 20px rgba(255, 255, 255, 0.6),
    0 0 30px rgba(255, 0, 150, 0.5),
    0 0 40px rgba(255, 0, 150, 0.4);
  animation: glow 2.5s ease-in-out infinite alternate;
}

@keyframes glow {
  0% {
    text-shadow:
      0 0 8px rgba(255, 255, 255, 0.7),
      0 0 16px rgba(255, 255, 255, 0.5),
      0 0 24px rgba(255, 0, 150, 0.4),
      0 0 32px rgba(255, 0, 150, 0.3);
  }
  100% {
    text-shadow:
      0 0 15px rgba(255, 255, 255, 1),
      0 0 30px rgba(255, 255, 255, 0.9),
      0 0 45px rgba(255, 0, 150, 0.7),
      0 0 60px rgba(255, 0, 150, 0.6);
  }
}

.hero p { color: var(--muted); margin: 0 0 20px; }
.hero-cta { display: flex; gap: 12px; justify-content: center; margin-bottom: 16px; }
.btn {
  display: inline-block; padding: 12px 20px; border-radius: 12px; font-weight: 700;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-primary { background: var(--primary); color: #120813; box-shadow: 0 8px 20px rgba(255,79,216,0.35); }
.btn-secondary { border: 1px solid var(--secondary); color: var(--fg); }
.btn:hover { transform: translateY(-2px); }
.hero-tags { list-style: none; padding: 0; display: flex; gap: 10px; justify-content: center; }
.hero-tags li { font-size: 14px; color: #b3ecff; }

/* Sections */
section { padding: 64px 0; }
h2 { font-family: Poppins, Noto Sans JP, sans-serif; font-size: clamp(22px, 3.6vw, 34px); margin: 0 0 18px; }

/* Features */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--border); padding: 14px; border-radius: 16px; }
.card h3 { margin: 12px 0 8px; }
.card p { color: var(--muted); }

/* Classes */
.classes { background: linear-gradient(180deg, #0b0b12, #0f0f1a); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.class-tabs { display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.tab-btn {
  background: #15152a; color: var(--fg); border: 1px solid var(--border);
  padding: 10px 14px; border-radius: 999px; cursor: pointer;
}
.tab-btn.active { border-color: var(--secondary); box-shadow: 0 0 0 2px rgba(66,210,255,0.2) inset; }
.class-panels .panel { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; align-items: center; background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 16px; }
.class-panels .panel:not(.active) { display: none; }
.panel-info p { color: var(--muted); }
.info-list { list-style: none; padding: 0; margin: 10px 0 0; }
.info-list li { margin: 6px 0; }

/* Voices */
.voices .slider { display: grid; grid-template-columns: 1fr; gap: 18px; }
.voices .slide { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 14px; display: grid; grid-template-columns: 140px 1fr; gap: 12px; align-items: center; }
.voices blockquote { margin: 0; color: var(--muted); }
.voices cite { display: block; margin-top: 8px; font-style: normal; color: #9ea2ff; }
.slider-controls { display: flex; justify-content: flex-end; gap: 10px; margin-top: 10px; }
.slider-controls button { background: #15152a; color: var(--fg); border: 1px solid var(--border); padding: 8px 14px; border-radius: 10px; cursor: pointer; }

/* Apply form */
.apply { background: #0f0f1a; border-top: 1px solid var(--border); }
.apply-lead { color: var(--muted); }
form { background: var(--card); border: 1px solid var(--border); padding: 18px; border-radius: 16px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
label span { display: block; margin-bottom: 8px; font-weight: 700; }
input, select, textarea {
  width: 100%; padding: 12px; border-radius: 12px; border: 1px solid var(--border);
  background: #121226; color: var(--fg);
}
.choices { display: flex; gap: 12px; }
label.full { grid-column: 1 / -1; }
.form-note { color: var(--muted); margin-top: 10px; }
.form-status { margin-top: 8px; min-height: 20px; }
input:invalid, select:invalid { border-color: #3e3e60; }
input.error, select.error, textarea.error { border-color: var(--danger); }
.success-msg { color: var(--success); }
.error-msg { color: var(--danger); }

/* Footer */
.site-footer { padding: 28px 0 40px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.site-footer h3 { margin: 0 0 8px; }
.site-footer p { color: var(--muted); }
copyright { color: var(--muted); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .class-panels .panel { grid-template-columns: 1fr; }
  .voices .slide { grid-template-columns: 1fr; text-align: left; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav { display: none; position: absolute; right: 4%; top: 58px; background: #0f0f1a; padding: 14px; border-radius: 12px; border: 1px solid var(--border); }
  .nav a { display: block; margin: 8px 0; }
  .nav-toggle { display: inline-block; }
  .grid-3 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}

form label {
  display: block;
  margin-bottom: 20px;
}

.radio-group label {
  display: inline-block;
  margin-right: 16px;
}