/* ============================================================
   三百球 打 公式サイト - style.css
   Design: Mobile-first, Blue & White, Grid-based
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary:     #1A5C9E;
  --color-primary-dark:#134880;
  --color-primary-light:#E8F1FA;
  --color-accent:      #F5A623;
  --color-accent-dark: #D4891A;
  --color-text:        #1A1A2E;
  --color-text-sub:    #555770;
  --color-bg:          #FFFFFF;
  --color-bg-soft:     #F8F9FA;
  --color-border:      #DDE3EC;
  --color-white:       #FFFFFF;

  --font-base: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-card: 0 4px 20px rgba(26,92,158,0.10);
  --shadow-hover: 0 8px 32px rgba(26,92,158,0.18);

  --transition: 0.25s ease;

  --max-width: 1120px;
  --section-padding: 80px 20px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Section Commons --- */
.section {
  padding: var(--section-padding);
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1rem;
  color: var(--color-text-sub);
  max-width: 560px;
  line-height: 1.8;
}

.section-header {
  margin-bottom: 48px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition),
              transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 6px 20px rgba(26,92,158,0.30);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}
.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn-accent:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  box-shadow: 0 6px 20px rgba(245,166,35,0.35);
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: border-color var(--transition), gap var(--transition);
}
.link-more:hover {
  border-color: var(--color-primary);
  gap: 10px;
}
.link-more::after { content: '→'; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 16px rgba(26,92,158,0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.site-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-name-en {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  font-weight: 700;
}
.logo-name-ja {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

.global-nav {
  display: none;
}

.global-nav ul {
  display: flex;
  gap: 32px;
}

.global-nav a {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.03em;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition);
}
.global-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}
.global-nav a:hover { color: var(--color-primary); }
.global-nav a:hover::after { width: 100%; }

.header-cta {
  display: none;
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover { background: var(--color-primary-light); }
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0; right: 0; bottom: 0;
  background: var(--color-bg);
  z-index: 999;
  padding: 32px 24px;
  overflow-y: auto;
}
.mobile-nav.is-open { display: block; }

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.mobile-nav li { border-bottom: 1px solid var(--color-border); }
.mobile-nav a {
  display: block;
  padding: 18px 4px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  transition: color var(--transition), padding-left var(--transition);
}
.mobile-nav a:hover {
  color: var(--color-primary);
  padding-left: 8px;
}
.mobile-nav .btn {
  margin-top: 28px;
  width: 100%;
  justify-content: center;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 68px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      135deg,
      rgba(26,92,158,0.82) 0%,
      rgba(19,72,128,0.60) 60%,
      rgba(26,92,158,0.30) 100%
    ),
    url('https://images.unsplash.com/photo-1506905925346-21bda4d32df4?w=1600&q=80') center/cover no-repeat;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 24px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.35);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-badge span { color: var(--color-accent); }

.hero-title {
  font-size: clamp(2rem, 6vw, 3.8rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.hero-title em {
  font-style: normal;
  color: var(--color-accent);
  display: block;
}

.hero-desc {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: rgba(255,255,255,0.88);
  max-width: 500px;
  line-height: 1.9;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.6);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  z-index: 1;
  animation: heroScroll 2s ease-in-out infinite;
}
.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
}
@keyframes heroScroll {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) translateY(0); }
  50%       { opacity: 1;   transform: translateX(-50%) translateY(6px); }
}

/* ============================================================
   INTRO
   ============================================================ */
.intro {
  background: var(--color-bg);
  padding: var(--section-padding);
  text-align: center;
}

.intro-inner {
  max-width: 720px;
  margin: 0 auto;
}

.intro-quote {
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  font-weight: 900;
  color: var(--color-primary);
  margin-bottom: 24px;
  line-height: 1.5;
  position: relative;
}
.intro-quote::before {
  content: '"';
  font-size: 5rem;
  color: var(--color-primary-light);
  position: absolute;
  top: -20px; left: -20px;
  line-height: 1;
  font-family: Georgia, serif;
}

.intro-text {
  color: var(--color-text-sub);
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 32px;
}

/* Number Stats */
.intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  border-top: 1px solid var(--color-border);
  padding-top: 40px;
}

.stat-item { text-align: center; }

.stat-num {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num sup {
  font-size: 0.5em;
  vertical-align: super;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--color-text-sub);
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* ============================================================
   POLICY
   ============================================================ */
.policy {
  background: var(--color-bg-soft);
  padding: var(--section-padding);
}

.policy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.policy-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.policy-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}

.policy-icon {
  width: 52px;
  height: 52px;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.policy-card h3 {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--color-text);
}

.policy-card p {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.8;
  flex: 1;
}

.policy-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  letter-spacing: 0.05em;
  align-self: flex-start;
}

.policy-footer {
  text-align: center;
  margin-top: 40px;
}

/* ============================================================
   ACTIVITY
   ============================================================ */
.activity {
  background: var(--color-bg);
  padding: var(--section-padding);
}

.activity-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.activity-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  background: var(--color-bg);
  transition: transform var(--transition), box-shadow var(--transition);
}
.activity-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.activity-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--color-primary-light);
}

.activity-body {
  padding: 20px 22px 24px;
}

.activity-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.activity-cat {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
}

.activity-date {
  font-size: 0.78rem;
  color: var(--color-text-sub);
}

.activity-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}

.activity-card p {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  line-height: 1.75;
}

.activity-footer {
  text-align: center;
  margin-top: 40px;
}

/* ============================================================
   PROFILE TEASER
   ============================================================ */
.profile-teaser {
  background: var(--color-bg-soft);
  padding: var(--section-padding);
}

.profile-inner {
  display: flex;
  flex-direction: column;
  gap: 40px;
  align-items: center;
}

.profile-photo-wrap {
  flex-shrink: 0;
}

.profile-photo {
  width: 200px;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(26,92,158,0.20);
  border: 4px solid var(--color-white);
}

.profile-info { max-width: 540px; }

.profile-name-block {
  margin-bottom: 20px;
}
.profile-name-en {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 4px;
}
.profile-name-ja {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.04em;
}
.profile-title {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: 4px;
}

.profile-bio {
  font-size: 0.95rem;
  color: var(--color-text-sub);
  line-height: 2;
  margin-bottom: 24px;
}

.profile-career {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.career-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 0.88rem;
}

.career-year {
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
  min-width: 52px;
}

.career-desc { color: var(--color-text); }

/* ============================================================
   KIJO APPEAL
   ============================================================ */
.kijo-appeal {
  background: linear-gradient(135deg, #EEF5FC 0%, #F8F9FA 100%);
  padding: var(--section-padding);
  position: relative;
  overflow: hidden;
}

.kijo-appeal::before {
  content: '';
  position: absolute;
  top: -60px; right: -80px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(26,92,158,0.07) 0%, transparent 70%);
  border-radius: 50%;
}

.kijo-inner {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.kijo-photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.kijo-photo {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.kijo-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.kijo-photo:hover img { transform: scale(1.05); }

.kijo-photo:first-child {
  grid-column: span 2;
  aspect-ratio: 16/7;
}

.kijo-text .section-sub { max-width: 100%; }

.kijo-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0;
}

.kijo-feat {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
}
.kijo-feat span.icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* ============================================================
   CONTACT CTA
   ============================================================ */
.contact-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0D3D6B 100%);
  padding: 80px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-cta::before {
  content: '三百球博';
  position: absolute;
  font-size: 12rem;
  font-weight: 900;
  color: rgba(255,255,255,0.04);
  white-space: nowrap;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  letter-spacing: 0.1em;
}

.contact-cta .section-label {
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.85);
}

.contact-cta .section-title {
  color: var(--color-white);
}

.contact-cta .section-sub {
  color: rgba(255,255,255,0.75);
  margin: 0 auto 36px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #0D1B2E;
  color: rgba(255,255,255,0.65);
  padding: 48px 20px 28px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
  margin-bottom: 24px;
}

.footer-logo .logo-name-ja { color: #fff; font-size: 1.2rem; }
.footer-logo .logo-name-en { color: rgba(255,255,255,0.5); }

.footer-slogan {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-top: 8px;
}

.footer-nav-title {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.4);
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.footer-nav li + li { margin-top: 8px; }

.footer-nav a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.60);
  transition: color var(--transition);
}
.footer-nav a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  text-align: center;
}

.footer-copy {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
}

.footer-policy a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  transition: color var(--transition);
}
.footer-policy a:hover { color: rgba(255,255,255,0.7); }

/* ============================================================
   RESPONSIVE — Tablet (640px+)
   ============================================================ */
@media (min-width: 640px) {
  .policy-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .activity-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .profile-inner {
    flex-direction: row;
    align-items: flex-start;
    gap: 48px;
  }

  .kijo-inner {
    flex-direction: row-reverse;
    align-items: center;
  }
  .kijo-photo-grid { flex: 1; min-width: 0; }
  .kijo-text { flex: 1; min-width: 0; }

  .footer-top {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 40px;
  }
  .footer-brand { flex: 1 1 200px; }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ============================================================
   RESPONSIVE — Desktop (960px+)
   ============================================================ */
@media (min-width: 960px) {
  .hamburger { display: none; }

  .global-nav { display: block; }

  .header-cta { display: inline-flex; }

  .policy-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .activity-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .profile-photo { width: 240px; height: 300px; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  animation: fadeUp 0.65s ease forwards;
}

.fade-up.delay-1 { animation-delay: 0.10s; }
.fade-up.delay-2 { animation-delay: 0.22s; }
.fade-up.delay-3 { animation-delay: 0.34s; }
.fade-up.delay-4 { animation-delay: 0.46s; }

/* Intersection Observer driven class */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   UTILITY
   ============================================================ */
.text-center { text-align: center; }
.mt-auto { margin-top: auto; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}