/* =========================================
   ACTS Portal — Apple Store Minimal
   ========================================= */
:root {
  --bg: #FFFFFF;
  --surface: #F5F5F7;
  --text: #1D1D1F;
  --text-sub: #6E6E73;
  --text-light: #86868B;
  --accent: #0071E3;
  --accent-hover: #0077ED;
  --indigo: #6366F1;
  --pink: #EC4899;
  --cyan: #06B6D4;
  --blue: #60A5FA;
  --gradient: linear-gradient(135deg, var(--indigo) 0%, var(--blue) 50%, var(--cyan) 100%);
  --gradient-vivid: linear-gradient(135deg, var(--indigo), var(--pink), var(--cyan));
  --border: #D2D2D7;
  --max-w: 980px;
  --max-w-wide: 1200px;
  --hdr-h: 72px;
  --radius: 20px;
  --radius-sm: 12px;
  --ease: 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-jp: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--hdr-h) + 20px); }
body {
  font-family: var(--font-jp); font-weight: 400; color: var(--text);
  line-height: 1.7; background: var(--bg);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: var(--indigo); text-decoration: none; transition: color var(--ease); }
a:hover { color: var(--cyan); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
/* 助詞 — コーポレートサイトと同じ 0.78em */
.pp {
  font-size: 0.78em;
  font-weight: inherit;
  color: inherit;
  margin: 0 0.02em;
  display: inline;
}

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: var(--max-w-wide); margin: 0 auto; padding: 0 24px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px;
  font-size: 0.9rem; font-weight: 500; font-family: var(--font-jp);
  cursor: pointer; border: none; transition: all var(--ease); text-decoration: none;
}
.btn-primary {
  background: var(--gradient); color: #fff;
  box-shadow: 0 4px 20px rgba(99,102,241,0.2);
}
.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(99,102,241,0.35);
  transform: translateY(-2px); color: #fff;
}

/* ── Header ── */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%;
  height: var(--hdr-h); z-index: 1000;
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px);
  transition: all var(--ease);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.95);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.header-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}

/* ロゴ */
.logo {
  display: flex; align-items: center; gap: 10px; text-decoration: none;
}
.logo-mark {
  font-family: var(--font-en); font-size: 1.15rem; font-weight: 700;
  letter-spacing: 0.18em;
  background: var(--gradient-vivid);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-sub {
  font-family: var(--font-en); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.12em; color: var(--text-light);
  border-left: 1px solid var(--border); padding-left: 10px;
}

/* ナビ */
.main-nav { display: flex; align-items: center; gap: 36px; }
.main-nav a {
  position: relative;
  font-size: 0.82rem; font-weight: 500; color: var(--text-sub);
  letter-spacing: 0.06em;
  transition: color var(--ease); text-decoration: none;
  padding: 4px 0;
}
.main-nav a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient); border-radius: 2px;
  transition: width var(--ease);
}
.main-nav a:hover { color: var(--text); }
.main-nav a:hover::after { width: 100%; }

/* CTA */
.nav-cta {
  background: var(--gradient); color: #fff !important;
  -webkit-text-fill-color: #fff !important;
  padding: 8px 22px !important; border-radius: 50px;
  font-size: 0.8rem !important; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
  box-shadow: 0 2px 12px rgba(99,102,241,0.2);
  transition: all var(--ease);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { box-shadow: none; transform: none; }
.nav-cta .lucide { display: none; }

/* ハンバーガー */
.menu-toggle {
  display: none; flex-direction: column; gap: 6px;
  background: none; border: none; cursor: pointer;
  padding: 8px; z-index: 1001; width: 32px;
}
.menu-toggle span {
  display: block; width: 100%; height: 1.5px; background: var(--text);
  border-radius: 2px; transition: all var(--ease); transform-origin: center;
}
.menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(2.5px, 2.5px); }
.menu-toggle.open span:nth-child(2) { transform: rotate(-45deg) translate(2.5px, -2.5px); }

/* モバイルナビ内 連絡先（デスクトップでは非表示） */
.nav-contact-sp { display: none; }

/* ── Hero ── */
.hero {
  position: relative; min-height: 90vh;
  display: flex; align-items: center; justify-content: center;
  padding: calc(var(--hdr-h) + 60px) 24px 80px; text-align: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
}
.hero-img {
  width: 100%; height: 100%; object-fit: cover;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(255,255,255,0.05) 35%, rgba(255,255,255,0.45) 60%, rgba(255,255,255,0.88) 80%, rgba(255,255,255,1) 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 680px; }
.hero-label {
  font-family: var(--font-en); font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.2em; margin-bottom: 16px;
  background: var(--gradient-vivid);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-catch {
  font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 600;
  line-height: 1.2; margin-bottom: 20px;
  letter-spacing: -0.02em;
  color: #2D3436;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem); font-weight: 300;
  color: #4A5568; line-height: 1.7; margin-bottom: 36px;
  letter-spacing: 0.02em;
  text-shadow:
    0 0 6px rgba(255,255,255,0.9),
    0 0 14px rgba(255,255,255,0.7),
    0 0 24px rgba(255,255,255,0.5);
}
.hide-sp { display: inline; }

/* ── Photo Slide Strip ── */
.photo-slide {
  overflow: hidden;
  padding: 0;
  background: transparent;
  position: relative;
  z-index: 2;
  margin-top: -120px;
}
.slide-track {
  display: flex;
  gap: 12px;
  animation: slideScroll 40s linear infinite;
  width: max-content;
}
.slide-track img {
  height: 240px;
  width: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 10px 28px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.06);
}
@keyframes slideScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Concept ── */
.concept { padding: 100px 0; background: var(--surface); }
.concept-content { text-align: center; margin-bottom: 72px; }
.concept-label {
  font-family: var(--font-en); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.15em; margin-bottom: 12px;
  background: var(--gradient-vivid);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.concept-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700;
  color: var(--text); margin-bottom: 20px; letter-spacing: -0.01em;
}
.concept-body {
  font-size: 1.05rem; font-weight: 300; color: var(--text-sub); line-height: 2;
}
.concept-features {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.cf {
  background: var(--bg); border-radius: var(--radius);
  padding: 36px 24px; text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: all var(--ease);
}
.cf:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
.cf-icon {
  width: 48px; height: 48px; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 14px;
  background: var(--gradient); color: #fff;
}
.cf-icon .lucide { width: 28px; height: 28px; }
.cf h3 { font-size: 0.92rem; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.cf p { font-size: 0.8rem; font-weight: 300; color: var(--text-sub); line-height: 1.6; }

/* ── Section common ── */
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  font-family: var(--font-en); font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.15em; margin-bottom: 8px;
  background: var(--gradient-vivid);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700;
  color: var(--text); letter-spacing: -0.01em;
}
.section-desc { font-size: 0.95rem; color: var(--text-sub); margin-top: 12px; font-weight: 300; }

/* ── Filter bar ── */
.filter-bar { margin-bottom: 40px; }
.filter-group {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 8px; margin-bottom: 12px;
}
.filter-label {
  font-size: 0.7rem; font-weight: 600; min-width: 40px; letter-spacing: 0.04em;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.filter-btn {
  font-family: var(--font-jp); font-size: 0.75rem; font-weight: 400;
  padding: 6px 16px; border-radius: 980px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text-sub); cursor: pointer; transition: all var(--ease);
  display: inline-flex; align-items: center; gap: 5px;
}
.filter-btn .lucide { width: 14px; height: 14px; stroke: url(#icon-grad); }
.filter-btn.active .lucide { stroke: #fff; }
.filter-btn:hover { border-color: var(--text-sub); color: var(--text); }
.filter-btn.active {
  background: var(--gradient); border-color: transparent; color: #fff;
}

/* ── Spaces ── */
.spaces { padding: 100px 0 120px; }
.spaces-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 24px;
}
.space-card {
  display: block; text-decoration: none; color: var(--text);
  border-radius: var(--radius); overflow: hidden;
  background: var(--bg);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: all var(--ease);
}
.space-card.hidden { display: none; }
.space-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.1); color: var(--text); }
.space-card-img {
  position: relative; height: 240px; overflow: hidden;
}
.space-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.space-card:hover .space-card-img img { transform: scale(1.05); }
.space-badge {
  position: absolute; bottom: 12px; left: 12px;
  font-family: var(--font-en); font-size: 0.6rem; font-weight: 600;
  letter-spacing: 0.15em; padding: 4px 12px; border-radius: 980px;
  background: var(--gradient); backdrop-filter: blur(8px);
  color: #fff;
}
.space-card-body { padding: 24px; }
.space-card-body h4 { font-size: 1.15rem; font-weight: 600; margin-bottom: 12px; }
.space-meta {
  list-style: none; padding: 0; margin: 0 0 14px;
  display: flex; flex-direction: column; gap: 6px;
}
.space-meta li {
  font-size: 0.78rem; color: var(--text-sub);
  display: flex; align-items: center; gap: 8px; line-height: 1.4;
}
.space-meta .lucide { width: 14px; height: 14px; flex-shrink: 0; stroke: url(#icon-grad); }
.space-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 12px; }
.tag {
  font-size: 0.65rem; font-weight: 400; padding: 2px 10px;
  border-radius: 980px; background: var(--surface); color: var(--text-sub);
}
.space-price {
  font-family: var(--font-en); font-size: 1.1rem; font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.space-price span { font-size: 0.75rem; font-weight: 400; color: var(--text-sub); }
.no-results {
  text-align: center; font-size: 0.9rem; color: var(--text-light);
  padding: 40px 0;
}

/* ── Contact ── */
.contact { padding: 100px 0; background: var(--surface); }
.contact-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 640px; margin: 0 auto;
}
.contact-item {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  background: var(--bg); border-radius: var(--radius); padding: 36px 48px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  text-decoration: none; color: var(--text);
  transition: all var(--ease);
}
.contact-item:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); color: var(--text); }
.contact-item .lucide {
  width: 28px; height: 28px;
  padding: 10px; box-sizing: content-box;
  border-radius: 14px;
  background: var(--gradient); color: #fff;
}
.contact-label {
  font-family: var(--font-en); font-size: 0.6rem; font-weight: 500;
  letter-spacing: 0.15em; color: var(--text-light);
}
.contact-value {
  font-family: var(--font-en); font-size: 1.05rem; font-weight: 500; color: var(--text);
}

/* ── Footer ── */
.site-footer { padding: 40px 0; border-top: 1px solid rgba(0,0,0,0.08); }
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.footer-logo {
  font-family: var(--font-en); font-size: 0.95rem; font-weight: 600;
  letter-spacing: 0.06em;
  background: var(--gradient-vivid);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-corp { font-size: 0.68rem; color: var(--text-light); margin-top: 2px; }
.footer-nav { display: flex; gap: 24px; }
.footer-nav a { font-size: 0.72rem; color: var(--text-sub); text-decoration: none; }
.footer-nav a:hover { color: var(--cyan); }
.footer-bottom { text-align: center; }
.footer-bottom p {
  font-family: var(--font-en); font-size: 0.65rem; color: var(--text-light);
}

/* ── Fade-in ── */
.fade-in {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.1, 0.25, 1),
              transform 0.7s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }
.concept-features .fade-in:nth-child(2) { transition-delay: 0.08s; }
.concept-features .fade-in:nth-child(3) { transition-delay: 0.16s; }
.concept-features .fade-in:nth-child(4) { transition-delay: 0.24s; }
.spaces-grid .fade-in:nth-child(2) { transition-delay: 0.1s; }
.contact-grid .fade-in:nth-child(2) { transition-delay: 0.1s; }

/* ── Responsive ── */
@media (max-width: 768px) {
  :root { --hdr-h: 60px; }
  .menu-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 0; right: -100%; width: 100%; height: 100vh;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    flex-direction: column; align-items: center; justify-content: center;
    gap: 0; transition: right var(--ease);
  }
  .main-nav.open { right: 0; }
  .main-nav a { font-size: 1.1rem; padding: 20px 0; color: var(--text-sub); }
  .main-nav .nav-cta { display: none; }
  .nav-contact-sp {
    display: flex; flex-direction: column; gap: 12px;
    margin-top: 32px; padding-top: 32px;
    border-top: 1px solid var(--border); width: 100%; max-width: 280px;
  }
  .nav-contact-item {
    display: flex; align-items: center; gap: 10px;
    font-size: 0.9rem; font-weight: 400; color: var(--text-sub);
    text-decoration: none; transition: color var(--ease);
    justify-content: center;
  }
  .nav-contact-item .lucide { width: 18px; height: 18px; stroke: url(#icon-grad); }
  .nav-contact-item:hover { color: var(--text); }
  .hide-sp { display: none; }
  .hero { min-height: 70vh; padding-top: calc(var(--hdr-h) + 40px); }
  .hero-catch { font-size: 2rem; }
  .photo-slide { margin-top: -70px; }
  .slide-track img { height: 160px; }
  .concept { padding: 72px 0; }
  .concept-features { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .cf { padding: 28px 16px; }
  .spaces { padding: 72px 0; }
  .spaces-grid { grid-template-columns: 1fr; gap: 16px; }
  .contact { padding: 72px 0; }
  .contact-grid { grid-template-columns: 1fr; max-width: 320px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .footer-nav { flex-wrap: wrap; justify-content: center; }
}