/* ============================
   Buenor — common.css
   全ページ共通スタイル
============================ */

/* リセット */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* 変数 */
:root {
  --black:     #0A0A0A;
  --dark:      #141414;
  --mid:       #282828;
  --g700:      #404040;
  --g500:      #767676;
  --g300:      #B0B0B0;
  --g100:      #E4E4E0;
  --off-white: #F5F4F0;
  --white:     #FFFFFF;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --tr: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ベース */
html { scroll-behavior: smooth; }
body { font-family: var(--font-jp); color: var(--black); background: var(--white); line-height: 1.7; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* コンテナ */
.container { width: min(1160px, 100% - 4rem); margin-inline: auto; }
.container--wide { width: min(1160px, 100% - 4rem); margin-inline: auto; }

/* フェードアップ */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity .75s ease, transform .75s ease; }
.fade-up.visible { opacity: 1; transform: none; }

/* ============================
   ヘッダー
============================ */
#header { position: fixed; inset-block-start: 0; inset-inline: 0; z-index: 100; background: rgba(10,10,10,.92); backdrop-filter: blur(16px); border-block-end: 1px solid rgba(255,255,255,.06); transition: transform 0.35s cubic-bezier(0.4,0,0.2,1); }
#header.header--hidden { transform: translateY(-100%); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { font-family: var(--font-en); font-size: 1.45rem; font-weight: 700; color: var(--white); letter-spacing: .08em; }
.logo-img { height: 28px; width: auto; display: block; filter: brightness(0) invert(1); }
.logo-img--footer { height: 22px; }
nav ul { display: flex; gap: 2.5rem; list-style: none; align-items: center; }
nav a { font-family: var(--font-en); color: rgba(255,255,255,.6); font-size: .82rem; font-weight: 500; letter-spacing: .06em; transition: color var(--tr); }
nav a:hover, nav a.active { color: var(--white); }
.nav-cta { color: var(--white) !important; border: 1px solid rgba(255,255,255,.35); padding: .45rem 1.1rem; border-radius: 2px; transition: background var(--tr), border-color var(--tr) !important; }
.nav-cta:hover { background: var(--white) !important; color: var(--black) !important; border-color: var(--white) !important; }

/* ドロップダウン */
.has-dropdown { position: relative; }
.has-dropdown > a { display: inline-flex; align-items: center; gap: .3rem; }
.has-dropdown > a::after { content: ''; display: block; width: 5px; height: 5px; border-inline-end: 1px solid currentColor; border-block-end: 1px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform var(--tr); opacity: .5; }
.has-dropdown:hover > a::after { transform: rotate(-135deg) translateY(1px); opacity: 1; }
.dropdown { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 1px; background: rgba(255,255,255,.06); position: absolute; inset-block-start: calc(100% + 1px); left: 50%; transform: translateX(-50%) translateY(8px); border: 1px solid rgba(255,255,255,.08); border-block-start: none; width: 560px; padding: 0; list-style: none; opacity: 0; visibility: hidden; transition: opacity var(--tr), transform var(--tr), visibility var(--tr); z-index: 200; }
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown li { display: block; background: var(--dark); height: 100%; }
.dropdown li a { display: flex; flex-direction: column; gap: .5rem; padding: 1.5rem 1.25rem; height: 100%; transition: background var(--tr); }
.dropdown li a:hover { background: rgba(255,255,255,.04); }
.dd-title { font-size: .8rem; font-weight: 600; color: var(--white); letter-spacing: .03em; padding-block-end: .6rem; border-block-end: 1px solid rgba(255,255,255,.08); }
.dd-desc { font-size: .7rem; color: rgba(255,255,255,.38); line-height: 1.75; font-weight: 400; }

/* モバイルサブアイテム */
.mobile-sub { font-size: 1rem !important; color: rgba(255,255,255,.6) !important; padding-inline-start: 1.25rem !important; }

/* ハンバーガー */
.hamburger { display: none; flex-direction: column; gap: 6px; cursor: pointer; padding: 6px; background: none; border: none; }
.hamburger span { display: block; width: 24px; height: 1px; background: var(--white); transition: var(--tr); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* モバイルナビ */
.mobile-nav { display: none; position: fixed; inset: 68px 0 0; background: var(--black); padding: 3rem 2rem; flex-direction: column; gap: 0; z-index: 99; }
.mobile-nav.open { display: flex; }
.mobile-nav a { color: rgba(255,255,255,.9); font-size: 1.2rem; font-weight: 400; padding: 1.1rem 0; border-block-end: 1px solid rgba(255,255,255,.07); transition: color var(--tr); }
.mobile-nav a:hover { color: var(--white); }
.mobile-nav .nav-cta { margin-block-start: 2rem; text-align: center; border: 1px solid rgba(255,255,255,.3); border-radius: 2px; padding: .9rem; border-block-end: 1px solid rgba(255,255,255,.3); }

/* ============================
   ページヒーロー（内部ページ共通）
============================ */
.page-hero {
  padding-block: 160px 100px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 65% 55% at 75% 55%, rgba(26,46,90,.65) 0%, transparent 70%),
    radial-gradient(ellipse 45% 45% at 15% 75%, rgba(26,46,90,.4) 0%, transparent 60%),
    linear-gradient(to right, rgba(10,10,10,.85) 40%, rgba(10,10,10,.3) 100%),
    linear-gradient(160deg, #0d1a35 0%, #0a0a0a 100%);
}
.hero-line { position: absolute; inset-block-start: 0; inset-inline-end: 28%; width: 1px; height: 100%; background: linear-gradient(to bottom, transparent, rgba(255,255,255,.05) 40%, rgba(255,255,255,.05) 60%, transparent); }
.page-eyebrow { font-family: var(--font-en); font-size: .7rem; font-weight: 500; letter-spacing: .2em; color: rgba(255,255,255,.35); margin-block-end: 1.5rem; display: flex; align-items: center; gap: 1rem; }
.page-eyebrow::before { content: ''; display: block; width: 32px; height: 1px; background: rgba(255,255,255,.2); }
.page-title { font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 700; color: var(--white); line-height: 1.2; letter-spacing: -.02em; margin-block-end: 1.5rem; }
.page-subtitle { font-size: .9rem; color: rgba(255,255,255,.4); font-weight: 400; max-width: 480px; line-height: 1.9; }
.breadcrumb { display: flex; align-items: center; gap: .6rem; margin-block-start: 3rem; font-family: var(--font-en); font-size: .7rem; letter-spacing: .08em; color: rgba(255,255,255,.25); }
.breadcrumb a { color: rgba(255,255,255,.35); transition: color var(--tr); }
.breadcrumb a:hover { color: var(--white); }

/* セクション共通 */
.section-label-en { font-family: var(--font-en); font-size: .7rem; font-weight: 600; letter-spacing: .2em; color: var(--g500); margin-block-end: 1.5rem; display: flex; align-items: center; gap: 1rem; }
.section-label-en::before { content: ''; display: block; width: 32px; height: 1px; background: currentColor; }
.section-label-en--white { color: var(--g300); }
.section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; color: var(--black); line-height: 1.35; letter-spacing: -.02em; }
.section-title--white { color: var(--white); }

/* ============================
   フッター
============================ */
footer { background: var(--dark); padding-block: 4rem 2.5rem; border-block-start: 1px solid rgba(255,255,255,.05); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 2rem; padding-block-end: 2.5rem; border-block-end: 1px solid rgba(255,255,255,.05); margin-block-end: 2rem; }
.footer-logo { font-family: var(--font-en); font-size: 1.3rem; font-weight: 700; color: var(--white); letter-spacing: .08em; }
.footer-links { display: flex; gap: 2rem; list-style: none; }
.footer-links a { color: var(--g500); font-size: .8rem; letter-spacing: .04em; transition: color var(--tr); }
.footer-links a:hover { color: var(--white); }
.footer-copy { font-family: var(--font-en); font-size: .72rem; color: var(--g500); letter-spacing: .05em; }

/* ============================
   レスポンシブ（共通）
============================ */
@media (max-width: 768px) {
  nav ul { display: none; }
  .hamburger { display: flex; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { flex-direction: column; gap: 1rem; }
  .breadcrumb { flex-wrap: wrap; }
  .breadcrumb span, .breadcrumb a { white-space: nowrap; }
}

/* Dify チャットボット */
#dify-chatbot-bubble-button { background-color: #282828 !important; }
#dify-chatbot-bubble-window { width: 24rem !important; height: 40rem !important; position: fixed !important; }