/* AI経営ナビ - Editorial Magazine Style */

:root {
  --primary: #1a1a2e;
  --primary-light: #16213e;
  --accent: #D97706;
  --accent-light: #F59E0B;
  --text: #F8F8F8;
  --text-muted: #9CA3AF;
  --border: rgba(255,255,255,0.08);
  --card-bg: rgba(255,255,255,0.04);
  --font-serif: 'Libre Baskerville', 'Georgia', serif;
  --font-sans: 'Inter', 'Hiragino Kaku Gothic ProN', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--primary);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3 { font-family: var(--font-serif); line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 600; }
h3 { font-size: 1.1rem; font-weight: 600; }
p { color: var(--text-muted); }

/* ===== CONTAINER ===== */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAVBAR ===== */
.navbar {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(26,26,46,0.95);
  backdrop-filter: blur(12px);
  z-index: 100;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.logo span { color: var(--accent); }
.nav-badge {
  font-size: 0.7rem;
  background: var(--accent);
  color: #000;
  padding: 2px 8px;
  border-radius: 100px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ===== HERO ===== */
.hero {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(217,119,6,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid rgba(217,119,6,0.3);
  border-radius: 100px;
}
.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero h1 {
  margin-bottom: 20px;
  color: #fff;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
}
.hero-lead {
  font-size: 1.05rem;
  color: #CBD5E1;
  margin-bottom: 36px;
  max-width: 620px;
  line-height: 1.8;
}
.hero-lead strong { color: var(--text); }

/* ===== EMAIL FORM ===== */
.email-form-wrapper {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(217,119,6,0.2);
  border-radius: 16px;
  padding: 28px 32px;
  max-width: 580px;
  margin-bottom: 28px;
}
.form-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  display: block;
}
.email-form {
  display: flex;
  gap: 12px;
}
.email-form input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  font-family: var(--font-sans);
  transition: border-color 0.2s;
}
.email-form input:focus { border-color: var(--accent); }
.email-form input::placeholder { color: var(--text-muted); }
.btn-cta {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 10px;
  padding: 14px 24px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.1s;
  font-family: var(--font-sans);
}
.btn-cta:hover { background: var(--accent-light); transform: translateY(-1px); }
.btn-cta:active { transform: translateY(0); }
.form-disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 10px;
}
.social-proof {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.social-proof-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.social-proof-item .dot {
  width: 6px;
  height: 6px;
  background: #22C55E;
  border-radius: 50%;
}

/* ===== SECTION BASE ===== */
section { padding: 64px 0; }
.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-divider {
  width: 40px;
  height: 2px;
  background: var(--accent);
  margin: 16px 0 32px;
}

/* ===== EXECUTIVE VALUE PROP ===== */
.exec-value {
  border-top: 1px solid var(--border);
  background: var(--primary-light);
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2px;
  margin-top: 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.stat-item {
  padding: 28px 24px;
  background: var(--card-bg);
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.pillar-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 0.2s;
}
.pillar-card:hover { border-color: rgba(217,119,6,0.3); }
.pillar-icon { font-size: 1.4rem; margin-bottom: 12px; }
.pillar-title { font-size: 0.95rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.pillar-desc { font-size: 0.82rem; color: var(--text-muted); }

/* ===== CASE STUDY PREVIEW ===== */
.case-studies { border-top: 1px solid var(--border); }
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.case-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.case-industry {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.case-title { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.case-result {
  font-size: 1.3rem;
  font-weight: 700;
  font-family: var(--font-serif);
  color: #22C55E;
  margin-bottom: 6px;
}
.case-desc { font-size: 0.8rem; color: var(--text-muted); }

/* ===== TRUST SIGNALS ===== */
.trust-section { border-top: 1px solid var(--border); background: var(--primary-light); }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-top: 40px;
  align-items: start;
}
.trust-item { text-align: center; }
.trust-icon { font-size: 2rem; margin-bottom: 12px; }
.trust-title { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.trust-desc { font-size: 0.8rem; color: var(--text-muted); }

/* ===== TOOL DB TEASER ===== */
.tool-teaser { border-top: 1px solid var(--border); }
.category-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.cat-tab {
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  font-family: var(--font-sans);
  transition: all 0.2s;
}
.cat-tab.active, .cat-tab:hover {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  position: relative;
}
.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s, transform 0.2s;
}
.tool-card:hover { border-color: rgba(217,119,6,0.3); transform: translateY(-2px); }
.tool-card.blurred { filter: blur(5px); pointer-events: none; user-select: none; }
.tool-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.tool-name { font-size: 0.95rem; font-weight: 700; color: var(--text); }
.tool-rating {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 700;
}
.tool-category {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.tool-desc { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; }
.tool-roi {
  font-size: 0.78rem;
  color: #22C55E;
  background: rgba(34,197,94,0.08);
  border: 1px solid rgba(34,197,94,0.15);
  border-radius: 8px;
  padding: 8px 12px;
  line-height: 1.4;
}
.tool-roi-label { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.7; margin-bottom: 2px; }
.tool-free-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  color: #22C55E;
  border: 1px solid rgba(34,197,94,0.4);
  border-radius: 4px;
  padding: 2px 6px;
  margin-top: 8px;
}
.tool-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 240px;
  background: linear-gradient(to top, var(--primary) 40%, transparent);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 24px;
  z-index: 2;
}
.overlay-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 16px;
}
.overlay-text strong { color: var(--text); }

/* ===== BEEHIIV EMBED ===== */
.beehiiv-section {
  border-top: 1px solid var(--border);
  background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1e 100%);
}
.beehiiv-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.beehiiv-inner h2 { margin-bottom: 12px; color: #fff; }
.beehiiv-inner p { margin-bottom: 32px; }
.beehiiv-embed-wrapper {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(217,119,6,0.2);
  border-radius: 16px;
  overflow: hidden;
}
.beehiiv-embed-wrapper iframe {
  width: 100%;
  border: none;
  min-height: 160px;
}

/* ===== BOTTOM CTA ===== */
.cta-bottom {
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-bottom::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(217,119,6,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.cta-bottom h2 { margin-bottom: 12px; color: #fff; }
.cta-bottom p { margin-bottom: 32px; }
.cta-email-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}
.cta-email-form input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  font-family: var(--font-sans);
  transition: border-color 0.2s;
}
.cta-email-form input:focus { border-color: var(--accent); }
.cta-email-form input::placeholder { color: var(--text-muted); }

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}
footer p { font-size: 0.78rem; color: var(--text-muted); }
footer a { color: var(--text-muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .email-form { flex-direction: column; }
  .cta-email-form { flex-direction: column; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 48px 0 40px; }
  section { padding: 48px 0; }
  .email-form-wrapper { padding: 20px; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}