/* ============================================================
   議論調和塾 — Main Stylesheet
   post-lamp-850.css
   ============================================================ */

:root {
  --primary:   #15351b;
  --secondary: #e1eb00;
  --accent:    #cd91af;
  --bg:        #ffffff;
  --text:      #15351b;
  --gray:      #f5f5f0;
  --gray2:     #e8e8e2;
  --footer-bg: #15351b;
  --footer-text: #fff;
  --radius:    12px;
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ── Utility ─────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 860px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-block;
  padding: 13px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
}
.btn--primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn--primary:hover { background: #1f4d28; border-color: #1f4d28; text-decoration: none; }
.btn--secondary {
  background: var(--secondary);
  color: var(--primary);
  border-color: var(--secondary);
}
.btn--secondary:hover { background: #d4dd00; border-color: #d4dd00; text-decoration: none; }
.btn--outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn--outline:hover { background: var(--primary); color: #fff; text-decoration: none; }

/* ── Simple Banner ───────────────────────────────────────── */
.simple-banner {
  background: var(--secondary);
  color: var(--primary);
  text-align: center;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  position: relative;
  z-index: 200;
}
.simple-banner a { color: var(--primary); text-decoration: underline; }
.simple-banner-close {
  position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 18px; color: var(--primary);
}

/* ── Header ──────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--gray2);
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.site-logo { display: flex; align-items: center; gap: 10px; }
.site-logo svg { height: 40px; width: auto; }
.site-logo span { font-size: 18px; font-weight: 700; color: var(--primary); }

.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition);
  text-decoration: none;
}
.nav-menu a:hover { color: #1f4d28; text-decoration: none; }
.nav-menu .nav-cta {
  background: var(--primary);
  color: #fff;
  padding: 9px 22px;
  border-radius: var(--radius);
}
.nav-menu .nav-cta:hover { background: #1f4d28; }

.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
  align-items: center;
}
.hero-content { padding: 60px 60px 60px 40px; }
.hero-content h1 { font-size: clamp(28px, 4vw, 52px); font-weight: 700; line-height: 1.15; margin-bottom: 20px; }
.hero-content p { font-size: 17px; line-height: 1.75; margin-bottom: 32px; color: #2a4a2e; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-image { overflow: hidden; height: 100%; min-height: 460px; }
.hero-image img { width: 100%; height: 100%; object-fit: cover; }

/* ── Mission ─────────────────────────────────────────────── */
.mission {
  padding: 60px 24px;
  text-align: center;
  background: var(--bg);
}
.mission p {
  font-size: 17px;
  line-height: 1.85;
  color: var(--primary);
  max-width: 820px;
  margin: 0 auto;
}
.mission a { color: var(--primary); font-weight: 600; text-decoration: underline; }

/* ── Category Icons ──────────────────────────────────────── */
.categories {
  background: var(--gray);
  padding: 56px 24px;
}
.categories-inner {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  max-width: 900px;
  margin: 0 auto;
}
.cat-item { text-align: center; }
.cat-item .icon-box {
  width: 88px; height: 88px;
  background: var(--bg);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px;
  font-size: 36px;
  box-shadow: 0 2px 12px rgba(21,53,27,.09);
}
.cat-item .icon-box svg { width: 44px; height: 44px; fill: var(--accent); }
.cat-item span { font-size: 15px; font-weight: 600; color: var(--primary); }

/* ── Section Heading ─────────────────────────────────────── */
.section-heading {
  padding: 52px 24px 12px;
  text-align: center;
}
.section-heading h2 { font-size: clamp(26px, 3.5vw, 44px); font-weight: 700; }

/* ── Two Column CTA ──────────────────────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  min-height: 420px;
}
.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }
.two-col-text { padding: 56px 64px; }
.two-col-text h2 { font-size: clamp(24px, 3vw, 40px); font-weight: 700; margin-bottom: 18px; line-height: 1.2; }
.two-col-text p { font-size: 16px; line-height: 1.8; margin-bottom: 28px; }
.two-col-image img { width: 100%; height: 100%; object-fit: cover; min-height: 400px; display: block; }

/* ── Courses Grid ────────────────────────────────────────── */
.courses-section { padding: 40px 24px 72px; }
.courses-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto 32px;
  flex-wrap: wrap;
  gap: 16px;
}
.courses-top h2 { font-size: clamp(26px, 3vw, 40px); font-weight: 700; }
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.course-card {
  border: 1px solid var(--gray2);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  background: var(--bg);
}
.course-card:hover { box-shadow: 0 8px 28px rgba(21,53,27,.12); transform: translateY(-3px); }
.course-card img { width: 100%; height: 220px; object-fit: cover; }
.course-card-body { padding: 20px; }
.course-card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
.course-card-body .price { font-size: 18px; font-weight: 700; color: var(--primary); margin-top: 12px; }
.course-card-body .price del { font-size: 14px; font-weight: 400; opacity: .55; margin-right: 6px; }
.course-card-body p { font-size: 14px; line-height: 1.7; color: #3a5a3e; }
.course-card .btn { margin-top: 14px; width: 100%; text-align: center; padding: 10px; font-size: 14px; }

/* ── Location image ──────────────────────────────────────── */
.location-image { padding: 0; }
.location-image img { width: 100%; max-height: 360px; object-fit: cover; display: block; }

/* ── CTA Band ────────────────────────────────────────────── */
.cta-band {
  background: var(--primary);
  color: #fff;
  padding: 64px 24px;
  text-align: center;
}
.cta-band h2 { font-size: clamp(24px, 3vw, 40px); font-weight: 700; margin-bottom: 14px; }
.cta-band p { font-size: 17px; opacity: .85; margin-bottom: 32px; }
.cta-band .btn--secondary { font-size: 16px; padding: 14px 40px; }

/* ── Contact Form Section ────────────────────────────────── */
.contact-section { padding: 72px 24px; background: var(--gray); }
.contact-section h2 { font-size: clamp(24px, 3vw, 38px); font-weight: 700; margin-bottom: 10px; text-align: center; }
.contact-section .sub { text-align: center; font-size: 16px; margin-bottom: 40px; opacity: .8; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; max-width: 1100px; margin: 0 auto; align-items: start; }
.contact-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 18px; }
.contact-info .info-item { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 20px; }
.contact-info .info-item i { font-size: 18px; color: var(--accent); margin-top: 3px; min-width: 20px; }
.contact-info .info-item p { font-size: 15px; line-height: 1.65; }
.contact-form { background: #fff; padding: 36px; border-radius: var(--radius); box-shadow: 0 2px 16px rgba(21,53,27,.07); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; color: var(--primary); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--gray2);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  transition: border-color var(--transition);
  background: #fff;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 12px; color: #888; margin-top: 6px; }
.form-submit .btn { width: 100%; text-align: center; padding: 14px; font-size: 16px; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer { background: var(--footer-bg); color: var(--footer-text); padding: 64px 24px 32px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto 48px;
}
.footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 18px; opacity: 1; }
.footer-col p { font-size: 14px; line-height: 1.8; opacity: .72; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; opacity: .72; transition: opacity var(--transition); text-decoration: none; }
.footer-col ul li a:hover { opacity: 1; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo svg { height: 36px; width: auto; }
.footer-logo span { font-size: 17px; font-weight: 700; }
.footer-social { display: flex; gap: 14px; margin-top: 18px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  transition: background var(--transition);
  text-decoration: none;
  opacity: 1;
}
.footer-social a:hover { background: rgba(255,255,255,.25); }
.footer-newsletter input {
  width: 100%;
  padding: 10px 14px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 10px;
  font-family: inherit;
}
.footer-newsletter .btn { width: 100%; text-align: center; font-size: 14px; padding: 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 24px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 13px; opacity: .6; }
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { font-size: 13px; opacity: .6; transition: opacity var(--transition); text-decoration: none; }
.footer-bottom-links a:hover { opacity: 1; }

/* ── Cookies / GDPR ──────────────────────────────────────── */
#cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--primary);
  color: #fff;
  padding: 18px 24px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: 0 -2px 20px rgba(0,0,0,.2);
}
#cookie-banner p { font-size: 14px; opacity: .9; flex: 1; min-width: 220px; }
#cookie-banner a { color: var(--secondary); text-decoration: underline; }
.cookie-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cookie-actions .btn { padding: 9px 22px; font-size: 14px; }
.cookie-actions .btn--reject {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.4);
  color: #fff;
}
.cookie-actions .btn--reject:hover { border-color: #fff; }

/* ── Page Hero (inner pages) ─────────────────────────────── */
.page-hero {
  background: var(--gray);
  padding: 64px 24px 56px;
  text-align: center;
}
.page-hero h1 { font-size: clamp(26px, 3.5vw, 46px); font-weight: 700; margin-bottom: 14px; }
.page-hero p { font-size: 17px; opacity: .75; max-width: 640px; margin: 0 auto; }

/* ── Content blocks ──────────────────────────────────────── */
.content-section { padding: 64px 24px; }
.content-section h2 { font-size: 26px; font-weight: 700; margin: 36px 0 14px; }
.content-section h3 { font-size: 20px; font-weight: 600; margin: 28px 0 10px; }
.content-section p { font-size: 16px; line-height: 1.85; margin-bottom: 16px; }
.content-section ul, .content-section ol { padding-left: 20px; margin-bottom: 16px; }
.content-section ul { list-style: disc; }
.content-section ol { list-style: decimal; }
.content-section li { font-size: 16px; line-height: 1.75; margin-bottom: 8px; }

/* ── Price List Page ─────────────────────────────────────── */
.price-section { padding: 64px 24px; }
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
  max-width: 1200px;
  margin: 40px auto 0;
}
.price-card {
  border: 2px solid var(--gray2);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--bg);
  position: relative;
}
.price-card.featured { border-color: var(--secondary); }
.price-card.featured::before {
  content: "人気";
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--secondary); color: var(--primary);
  font-size: 12px; font-weight: 700; padding: 3px 14px; border-radius: 20px;
}
.price-card:hover { box-shadow: 0 8px 28px rgba(21,53,27,.1); border-color: var(--primary); }
.price-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.price-card .amount { font-size: 40px; font-weight: 700; color: var(--primary); line-height: 1; margin: 16px 0 4px; }
.price-card .amount span { font-size: 16px; }
.price-card .period { font-size: 13px; opacity: .6; margin-bottom: 24px; }
.price-card ul { text-align: left; margin-bottom: 28px; }
.price-card ul li { font-size: 14px; padding: 7px 0; border-bottom: 1px solid var(--gray2); display: flex; align-items: center; gap: 8px; list-style: none; }
.price-card ul li i { color: var(--primary); font-size: 13px; }
.price-card .btn { width: 100%; text-align: center; }

/* ── About page ──────────────────────────────────────────── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; max-width: 1100px; margin: 0 auto; padding: 64px 24px; }
.about-text h2 { font-size: clamp(22px, 3vw, 36px); font-weight: 700; margin-bottom: 18px; }
.about-text p { font-size: 16px; line-height: 1.85; margin-bottom: 16px; }
.about-image img { width: 100%; border-radius: var(--radius); }

.team-section { padding: 60px 24px; background: var(--gray); }
.team-section h2 { font-size: clamp(22px, 3vw, 36px); font-weight: 700; text-align: center; margin-bottom: 40px; }
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; max-width: 1000px; margin: 0 auto; }
.team-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; text-align: center; padding-bottom: 24px; box-shadow: 0 2px 12px rgba(21,53,27,.07); }
.team-card img { width: 100%; height: 200px; object-fit: cover; }
.team-card h4 { font-size: 17px; font-weight: 700; margin: 16px 0 6px; }
.team-card p { font-size: 14px; opacity: .7; padding: 0 16px; }

/* ── Success / Error messages ────────────────────────────── */
.alert { padding: 20px 24px; border-radius: var(--radius); font-size: 16px; max-width: 600px; margin: 20px auto; text-align: center; }
.alert--success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert--error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .hero-content { padding: 48px 24px; }
  .hero-image { min-height: 320px; }
  .two-col { grid-template-columns: 1fr; direction: ltr; }
  .two-col.reverse { direction: ltr; }
  .two-col-text { padding: 40px 24px; }
  .two-col-image img { min-height: 280px; }
  .courses-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav-menu { display: none; flex-direction: column; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--bg); z-index: 999; padding: 80px 24px 24px; gap: 24px; align-items: flex-start; }
  .nav-menu.open { display: flex; }
  .burger { display: flex; z-index: 1000; position: relative; }
  .courses-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .team-grid { grid-template-columns: 1fr; }
  .categories-inner { gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom-links { flex-direction: column; gap: 10px; }
}