/* ============================================
   RippleWorks Corporate Site - Shared Styles
   ============================================ */

:root {
  --navy-900: #061a30;
  --navy-800: #0a2540;
  --navy-700: #122e4f;
  --navy-600: #1d3e63;
  --accent: #1e5aff;
  --accent-light: #4a7dff;
  --white: #ffffff;
  --off-white: #f6f8fb;
  --gray-100: #eef1f6;
  --gray-200: #e4e8ef;
  --gray-300: #c9d1dd;
  --gray-500: #8a95a8;
  --gray-700: #4a5568;
  --gray-900: #1a202c;
  --border: #e4e8ef;

  --font-jp: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-en: 'Manrope', 'Inter', -apple-system, sans-serif;

  --max-w: 1280px;
  --section-pad: clamp(80px, 10vw, 140px);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-jp);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.en { font-family: var(--font-en); letter-spacing: 0.02em; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* ============ Header ============ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: all 0.3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(10,37,64,0.06);
  padding: 14px 0;
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--navy-800);
}
.logo-mark {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.site-header.on-dark .logo,
.site-header.on-dark .nav a,
.site-header.on-dark .nav-contact-mini { color: white; }
.site-header.scrolled .logo,
.site-header.scrolled .nav a { color: var(--navy-800); }

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--navy-800);
  position: relative;
  padding: 6px 0;
  transition: opacity 0.2s;
}
.nav a:hover { opacity: 0.6; }
.nav a .num {
  font-family: var(--font-en);
  font-size: 10px;
  color: var(--accent);
  margin-right: 6px;
  font-weight: 600;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  background: var(--navy-800);
  color: white !important;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--accent); opacity: 1 !important; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 32px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: all 0.25s;
}
.btn-primary {
  background: var(--navy-800);
  color: white;
}
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); }
.btn-outline {
  border: 1.5px solid var(--navy-800);
  color: var(--navy-800);
  background: transparent;
}
.btn-outline:hover { background: var(--navy-800); color: white; }
.btn-light {
  background: white;
  color: var(--navy-800);
}
.btn-light:hover { background: var(--off-white); }
.btn .arrow {
  width: 18px; height: 18px;
  transition: transform 0.25s;
}
.btn:hover .arrow { transform: translateX(4px); }

/* ============ Section helpers ============ */
.section {
  padding: var(--section-pad) 0;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.section-label::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--navy-800);
  letter-spacing: 0.01em;
  margin-bottom: 24px;
}
.section-title .accent { color: var(--accent); }
.section-lead {
  font-size: 16px;
  color: var(--gray-700);
  max-width: 640px;
  line-height: 2;
}

/* ============ Footer ============ */
.site-footer {
  background: var(--navy-900);
  color: white;
  padding: 80px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}
.footer-brand .logo { color: white; margin-bottom: 16px; }
.footer-brand p {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  line-height: 1.9;
}
.footer-col h4 {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 18px;
  text-transform: uppercase;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 12px; }
.footer-col a {
  font-size: 13px;
  color: rgba(255,255,255,0.85);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

/* ============ Mobile nav ============ */
.nav-toggle { display: none; }

@media (max-width: 880px) {
  .nav { display: none; }
  .nav-toggle {
    display: inline-flex;
    width: 40px; height: 40px;
    align-items: center; justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    width: 22px; height: 2px;
    background: var(--navy-800);
    position: relative;
  }
  .nav-toggle span::before,
  .nav-toggle span::after {
    content: ''; position: absolute; left: 0;
    width: 22px; height: 2px; background: inherit;
  }
  .nav-toggle span::before { top: -6px; }
  .nav-toggle span::after { top: 6px; }
  .site-header.on-dark .nav-toggle span,
  .site-header.on-dark .nav-toggle span::before,
  .site-header.on-dark .nav-toggle span::after { background: white; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

/* ============ Page hero (sub pages) ============ */
.page-hero {
  position: relative;
  background: var(--navy-900);
  color: white;
  padding: 200px 0 120px;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 30%, rgba(30,90,255,0.3) 0%, transparent 50%),
    radial-gradient(circle at 10% 80%, rgba(30,90,255,0.15) 0%, transparent 55%);
}
.page-hero[data-watermark]::after {
  content: attr(data-watermark);
  position: absolute;
  bottom: -20px; right: -20px;
  font-family: var(--font-en);
  font-size: clamp(100px, 18vw, 240px);
  font-weight: 800;
  color: rgba(255,255,255,0.04);
  letter-spacing: -0.04em;
  line-height: 0.9;
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 40px;
  text-transform: uppercase;
}
.page-hero .breadcrumb a { color: rgba(255,255,255,0.5); transition: color 0.2s; }
.page-hero .breadcrumb a:hover { color: var(--accent-light); }
.page-hero .breadcrumb .sep { color: rgba(255,255,255,0.2); }
.page-hero .en-title {
  font-family: var(--font-en);
  font-size: clamp(56px, 11vw, 160px);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}
.page-hero .en-title .stroke {
  color: transparent;
  -webkit-text-stroke: 1.5px white;
  padding-left: clamp(40px, 8vw, 120px);
  display: block;
}
.page-hero .jp-title {
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.05em;
  margin-top: 24px;
}

/* ============ Section intro block (shared) ============ */
.intro-block {
  padding: 100px 0 40px;
  background: white;
  border-bottom: 1px solid var(--border);
}
.intro-block .container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}
.intro-block .heading-side .section-label { color: var(--accent); margin-bottom: 16px; }
.intro-block .heading-side h2 {
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 700;
  color: var(--navy-800);
  line-height: 1.5;
}
.intro-block .body p {
  font-size: 16px;
  line-height: 2.1;
  color: var(--gray-700);
  margin-bottom: 20px;
}
.intro-block .body p:first-child {
  font-size: 18px;
  color: var(--navy-800);
  font-weight: 500;
}
@media (max-width: 880px) {
  .intro-block .container { grid-template-columns: 1fr; gap: 32px; }
}

/* ============ Bottom CTA (shared) ============ */
.bottom-cta {
  background: var(--navy-900);
  color: white;
  padding: 140px 0;
  position: relative;
  overflow: hidden;
}
.bottom-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 70% 50%, rgba(30,90,255,0.18) 0%, transparent 60%);
}
.bottom-cta .container { text-align: center; position: relative; }
.bottom-cta .en-label {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--accent-light);
  margin-bottom: 24px;
  text-transform: uppercase;
}
.bottom-cta h2 {
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.3;
  margin-bottom: 32px;
  font-weight: 700;
}
.bottom-cta p {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  margin: 0 auto 48px;
  max-width: 560px;
  line-height: 2;
}
.bottom-cta .actions {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
}
.bottom-cta .btn-outline {
  border-color: rgba(255,255,255,0.4);
  color: white;
}
.bottom-cta .btn-outline:hover {
  background: white; color: var(--navy-800); border-color: white;
}

/* ============ Animations ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   ▼▼▼ モバイルメニュー（新規追加） ▼▼▼
   ============================================ */

/* 1) ハンバーガーボタン（×への変形を追加） */
.nav-toggle{
  display:none;  /* デフォルトは非表示 */
  position:relative;
  width:44px;height:44px;
  background:transparent;border:none;cursor:pointer;
  z-index:1001;
  align-items:center;justify-content:center;
}
/* 880px以下（スマホ）でだけ表示 */
@media (max-width:880px){
  .nav-toggle{display:inline-flex}
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:'';position:absolute;left:50%;
  width:24px;height:2px;background:var(--navy-800);
  transition:transform .35s ease, top .35s ease, opacity .2s ease, background .2s ease;
}
.nav-toggle span{top:50%;transform:translate(-50%,-50%)}
.nav-toggle span::before{top:-8px;transform:translateX(-50%)}
.nav-toggle span::after{top:8px;transform:translateX(-50%)}

/* on-dark（ダーク背景）時は白バー */
.site-header.on-dark .nav-toggle span,
.site-header.on-dark .nav-toggle span::before,
.site-header.on-dark .nav-toggle span::after{background:#fff}

/* メニュー展開中は常に白バーで × に変形 */
.nav-toggle[aria-expanded="true"] span{background:transparent !important}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg);background:#fff !important}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg);background:#fff !important}

/* 2) モバイルメニュー本体（フルスクリーンドロワー） */
.mobile-menu{
  position:fixed;inset:0;
  background:linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 60%, var(--navy-700) 100%);
  color:#fff;
  z-index:1000;
  padding:96px 28px 40px;
  display:none;flex-direction:column;
  opacity:0;visibility:hidden;
  clip-path:circle(0% at calc(100% - 42px) 42px);
  transition:clip-path .55s cubic-bezier(.77,0,.18,1), opacity .25s ease, visibility 0s linear .55s;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.mobile-menu.is-open{
  opacity:1;visibility:visible;
  clip-path:circle(150% at calc(100% - 42px) 42px);
  transition:clip-path .55s cubic-bezier(.77,0,.18,1), opacity .2s ease, visibility 0s linear 0s;
}

/* 装飾の波紋 */
.mobile-menu::before{
  content:'';position:absolute;left:-80px;bottom:-80px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle, rgba(74,125,255,.35), transparent 65%);
  pointer-events:none;
}
.mobile-menu::after{
  content:'RIPPLE';
  position:absolute;right:-10px;bottom:90px;
  font-family:var(--font-en);font-weight:800;font-size:120px;letter-spacing:-.04em;
  color:rgba(255,255,255,.04);line-height:.9;pointer-events:none;
}

.mobile-menu .mm-eyebrow{
  font-family:var(--font-en);font-size:11px;font-weight:600;letter-spacing:.25em;
  color:var(--accent-light);text-transform:uppercase;
  display:flex;align-items:center;gap:14px;margin-bottom:28px;
}
.mobile-menu .mm-eyebrow::before{content:'';width:36px;height:1px;background:var(--accent-light)}

.mobile-menu nav.mm-nav{display:flex;flex-direction:column;gap:4px}
.mobile-menu nav.mm-nav a{
  display:flex;align-items:baseline;gap:16px;
  padding:18px 0;border-bottom:1px solid rgba(255,255,255,.08);
  font-family:var(--font-en);font-size:28px;font-weight:700;letter-spacing:.01em;
  color:#fff;
  opacity:0;transform:translateY(14px);
  transition:opacity .5s ease, transform .5s cubic-bezier(.22,1,.36,1), color .2s;
}
.mobile-menu.is-open nav.mm-nav a{opacity:1;transform:translateY(0)}
.mobile-menu.is-open nav.mm-nav a:nth-child(1){transition-delay:.18s}
.mobile-menu.is-open nav.mm-nav a:nth-child(2){transition-delay:.24s}
.mobile-menu.is-open nav.mm-nav a:nth-child(3){transition-delay:.30s}
.mobile-menu.is-open nav.mm-nav a:nth-child(4){transition-delay:.36s}

.mobile-menu nav.mm-nav a .num{
  font-size:11px;font-weight:600;color:var(--accent-light);letter-spacing:.15em;
  min-width:28px;
}
.mobile-menu nav.mm-nav a .jp{
  margin-left:auto;font-family:var(--font-jp);font-size:12px;font-weight:500;
  color:rgba(255,255,255,.5);letter-spacing:.05em;
}
.mobile-menu nav.mm-nav a:active{color:var(--accent-light)}

.mobile-menu .mm-cta{
  margin-top:28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  background:#fff;color:var(--navy-800);
  border-radius:999px;font-weight:700;font-size:15px;
  opacity:0;transform:translateY(14px);
  transition:opacity .5s ease .5s, transform .5s cubic-bezier(.22,1,.36,1) .5s, background .2s;
}
.mobile-menu.is-open .mm-cta{opacity:1;transform:translateY(0)}
.mobile-menu .mm-cta:active{background:var(--accent-light);color:#fff}
.mobile-menu .mm-cta svg{width:18px;height:18px}

.mobile-menu .mm-meta{
  margin-top:auto;padding-top:32px;
  display:flex;justify-content:space-between;align-items:flex-end;
  font-family:var(--font-en);font-size:10px;letter-spacing:.2em;
  color:rgba(255,255,255,.4);text-transform:uppercase;
  opacity:0;transition:opacity .4s ease .6s;
}
.mobile-menu.is-open .mm-meta{opacity:1}

/* メニュー展開中は背面スクロール禁止 */
body.menu-open{overflow:hidden}

/* PCではモバイルメニュー自体を非表示 */
@media (min-width:881px){
  .mobile-menu{display:none !important}
}

/* ============================================
   ▲▲▲ モバイルメニュー ここまで ▲▲▲
   ============================================ */

/* === PCではモバイルメニューを完全に非表示（保険） === */
@media (min-width: 881px){
  .mobile-menu,
  .nav-toggle{
    display: none !important;
  }
}

/* === 880px以下（スマホ）ではメニューを有効化 === */
@media (max-width: 880px){
  .mobile-menu{
    display: flex;
  }
}