/**
 * PITMIL シンプル没入型トップページ用CSS
 * フルスクリーン画像重視・最小限
 */

:root {
  --bg: #0a0a0f;
  --text: #f5f5f7;
  --accent: #c084fc;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Fixed minimal nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 68px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  background: rgba(10,10,15,0.4);
  backdrop-filter: blur(10px);
  transition: background .3s ease;
}
.nav.scrolled {
  background: rgba(10,10,15,0.92);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #fff;
}

.nav-link {
  font-size: 14px;
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 999px;
  transition: all .2s ease;
}
.nav-link:hover {
  background: #fff;
  color: #0a0a0f;
  border-color: #fff;
}

/* Hero - Full screen image */
.hero {
  height: 100dvh;
  min-height: 620px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #000;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.25) 0%,
    rgba(0,0,0,0.55) 40%,
    rgba(0,0,0,0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(4rem, 11vw, 7.5rem);
  font-weight: 800;
  letter-spacing: 0.15em;
  margin: 0 0 8px;
  color: #fff;
  line-height: 1;
}



.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  letter-spacing: 3px;
  opacity: 0.6;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.scroll-hint .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(transparent, rgba(255,255,255,0.7));
}

/* Image section - large full-bleed */
.image-section {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #000;
}

.image-section .bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 1;
}

.image-section .content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 20px;
  max-width: 720px;
}

.image-section .content h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  margin: 0 0 16px;
  color: #fff;
}

.image-section .content p {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  max-width: 420px;
  margin: 0 auto 28px;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 999px;
  background: #fff;
  color: #0a0a0f;
  transition: transform .2s ease, box-shadow .2s ease;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}

/* Footer */
.footer {
  background: #050507;
  padding: 32px 20px;
  text-align: center;
  font-size: 13px;
  color: #666;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* Responsive */
@media (max-width: 640px) {
  .nav { padding: 0 16px; }
  .hero h1 { letter-spacing: 0.1em; }
}