/* ============================================================
   Wakuワーク - Main Stylesheet (Final Complete Version)
   ============================================================ */

/* ─────────────────────────────────────────
   CSS Variables & Reset
───────────────────────────────────────── */
:root {
  --primary: #FF6B35;
  --primary-dark: #E55A25;
  --primary-light: #FF8C5A;
  --secondary: #4ECDC4;
  --secondary-dark: #3DB8AE;
  --accent: #FFE66D;
  --dark: #1A1A2E;
  --dark-2: #16213E;
  --dark-3: #0F3460;
  --text: #2D3748;
  --text-light: #718096;
  --text-muted: #A0AEC0;
  --bg: #FAFAFA;
  --bg-alt: #F7FAFC;
  --white: #FFFFFF;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.20);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Poppins', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─────────────────────────────────────────
   Loading Screen & Particles
───────────────────────────────────────── */
#loading-screen {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, var(--dark-2), var(--dark-3));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loading-screen.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loading-logo { font-size: 2.5rem; font-weight: 900; margin-bottom: 2rem; animation: loadPulse 1s ease infinite alternate; }
.loading-logo .waku-text { color: var(--primary); }
.loading-logo .work-text { color: var(--white); }
.loading-bar { width: 200px; height: 4px; background: rgba(255,255,255,0.2); border-radius: 2px; overflow: hidden; }
.loading-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), var(--secondary)); animation: loadFill 1.5s ease forwards; }

@keyframes loadPulse { from { opacity: 0.7; transform: scale(0.98); } to { opacity: 1; transform: scale(1.02); } }
@keyframes loadFill { to { width: 100%; } }

#particles { position: fixed; inset: 0; pointer-events: none; z-index: 1; overflow: hidden; }
.particle { position: absolute; border-radius: 50%; opacity: 0.3; animation: floatParticle linear infinite; }
@keyframes floatParticle {
  0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 0.3; }
  90% { opacity: 0.3; }
  100% { transform: translateY(-10vh) rotate(720deg); opacity: 0; }
}

/* ─────────────────────────────────────────
   Header & Navigation
───────────────────────────────────────── */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 900; transition: var(--transition); padding: 20px 0; }
.header.scrolled { background: rgba(255,255,255,0.97); backdrop-filter: blur(12px); box-shadow: var(--shadow); padding: 12px 0; }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.header__logo { display: flex; align-items: baseline; gap: 4px; font-weight: 900; font-size: 1.6rem; line-height: 1; }
.header__logo small { display: block; font-size: 0.6rem; font-weight: 500; color: rgba(255,255,255,0.7); margin-left: 6px; white-space: nowrap; }
.header.scrolled .header__logo small { color: var(--text-light); }
.logo-waku { color: var(--primary); }
.logo-work { color: var(--white); transition: var(--transition); }
.header.scrolled .logo-work { color: var(--dark); }

.nav-list { display: flex; align-items: center; gap: 8px; }
.nav-list a { font-size: 0.9rem; font-weight: 500; padding: 8px 16px; border-radius: 8px; color: rgba(255,255,255,0.9); transition: var(--transition); }
.header:not(.scrolled) .nav-list a:hover { background: rgba(255,255,255,0.15); color: var(--white); }
.header.scrolled .nav-list a { color: var(--text); }
.header.scrolled .nav-list a:hover { background: var(--bg-alt); color: var(--primary); }
.nav-cta { background: var(--primary) !important; color: var(--white) !important; border-radius: 50px !important; padding: 8px 20px !important; font-weight: 700 !important; }
.nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); }

.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 1010; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }
.header.scrolled .hamburger span { background: var(--dark); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ─────────────────────────────────────────
   Hero Section
───────────────────────────────────────── */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; background: linear-gradient(135deg, #0F2027, #203A43, #2C5364); z-index: 2; }
.hero__bg { position: absolute; inset: 0; overflow: hidden; }
.hero__gradient { position: absolute; inset: 0; background: radial-gradient(circle at 20% 50%, rgba(255,107,53,0.25) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(78,205,196,0.2) 0%, transparent 50%); }
.hero__content { position: relative; z-index: 2; padding-top: 120px; padding-bottom: 80px; max-width: 800px; }
.hero__badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.2); color: var(--accent); font-size: 0.9rem; font-weight: 600; padding: 8px 20px; border-radius: 50px; margin-bottom: 24px; }
.hero__title { margin-bottom: 24px; }
.hero__title-sub { display: block; font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; color: var(--accent); line-height: 1.2; margin-bottom: 8px; }
.hero__title-main { display: block; font-size: clamp(1.8rem, 4.5vw, 2.8rem); font-weight: 700; color: var(--white); }
.hero__lead { font-size: clamp(1rem, 2vw, 1.2rem); color: rgba(255,255,255,0.85); margin-bottom: 32px; }
.hero__tags { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: var(--white); font-size: 0.85rem; padding: 8px 18px; border-radius: 50px; }
.tag i { color: var(--secondary); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 16px; }
.hero__scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: rgba(255,255,255,0.5); font-size: 0.7rem; letter-spacing: 0.15em; font-family: var(--font-en); }
.hero__scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent); animation: scrollLine 1.5s ease infinite; }
@keyframes scrollLine { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ─────────────────────────────────────────
   Buttons & Section Commons
───────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; border-radius: 50px; font-weight: 700; font-size: 0.95rem; transition: var(--transition); white-space: nowrap; }
.btn--primary { background: var(--primary); color: var(--white); }
.btn--primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(255,107,53,0.4); }
.btn--outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.5); }
.btn--outline:hover { background: rgba(255,255,255,0.15); border-color: var(--white); transform: translateY(-2px); }
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }
.btn--full { width: 100%; justify-content: center; }

.section { padding: 100px 0; position: relative; z-index: 2; }
.bg-alt { background: var(--bg-alt); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-label { font-family: var(--font-en); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.2em; color: var(--primary); display: block; margin-bottom: 12px; }
.section-title { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 900; color: var(--dark); line-height: 1.3; margin-bottom: 16px; }
.section-title::after { content: ''; display: block; width: 50px; height: 4px; background: linear-gradient(90deg, var(--primary), var(--secondary)); margin: 16px auto 0; border-radius: 2px; }
.section-desc { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 0 auto; }

/* ─────────────────────────────────────────
   理念・ビジョン (Vision Section)
───────────────────────────────────────── */
.vision__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; max-width: 900px; margin: 0 auto; }
.vision-card { background: var(--white); padding: 40px 30px; border-radius: var(--radius-lg); border: 1px solid var(--border); text-align: center; box-shadow: var(--shadow-sm); transition: var(--transition); }
.vision-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.vision-card__icon { width: 70px; height: 70px; background: rgba(255,107,53,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: var(--primary); margin: 0 auto 20px; }
.vision-card h3 { font-size: 1.2rem; font-weight: 800; color: var(--dark); margin-bottom: 12px; }
.vision-phrase { font-size: 1.25rem; font-weight: 700; color: var(--primary-dark); line-height: 1.5; }

/* ─────────────────────────────────────────
   About & カウンターガタガタ防止
───────────────────────────────────────── */
.about__flow-box { background: linear-gradient(135deg, var(--dark-2), var(--dark-3)); border-radius: var(--radius-xl); padding: 40px; color: var(--white); box-shadow: var(--shadow-lg); text-align: center; }
.about__flow-stats { display: flex; align-items: center; gap: 32px; }
.stat-item { text-align: center; }

.stat-num {
  display: inline-block;
  min-width: 160px;
  text-align: center;
  font-family: var(--font-en);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}
.stat-item:last-child .stat-num { min-width: 80px; }

.stat-label { display: block; font-size: 0.8rem; color: rgba(255,255,255,0.7); margin-top: 8px; }
.stat-divider { width: 1px; height: 60px; background: rgba(255,255,255,0.2); }

/* ─────────────────────────────────────────
   こんなお悩みにお応えします（4項目対応に最適化）
───────────────────────────────────────── */
.troubles__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; margin-top: 40px; }
.trouble-item { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px 24px; box-shadow: var(--shadow-sm); transition: var(--transition); text-align: left; position: relative; overflow: hidden; }
.trouble-item::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--secondary); transition: var(--transition); }
.trouble-item:hover::before { background: var(--primary); }
.trouble-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.trouble-item__icon { font-size: 2rem; color: var(--secondary); margin-bottom: 20px; }
.trouble-item:hover .trouble-item__icon { color: var(--primary); }
.trouble-item h3 { font-size: 1.15rem; font-weight: 800; color: var(--dark); margin-bottom: 12px; }
.trouble-item p { font-size: 0.88rem; color: var(--text-light); line-height: 1.7; }

/* ─────────────────────────────────────────
   Features (作業の特色と内容)
───────────────────────────────────────── */
.features__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; }
.feature-item { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px 20px; text-align: center; transition: var(--transition); box-shadow: var(--shadow-sm); }
.feature-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.feature-item__icon { width: 60px; height: 60px; background: linear-gradient(135deg, rgba(255,107,53,0.1), rgba(78,205,196,0.1)); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: var(--primary); margin: 0 auto 20px; transition: var(--transition); }
.feature-item:hover .feature-item__icon { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: var(--white); }
.feature-item span { font-size: 0.95rem; font-weight: 700; color: var(--dark); }

/* ─────────────────────────────────────────
   利用までの流れ (Flow Timeline)
───────────────────────────────────────── */
.flow__timeline { max-width: 800px; margin: 0 auto; position: relative; padding-left: 50px; }
.flow__timeline::before { content: ''; position: absolute; top: 0; left: 20px; width: 2px; height: 100%; background: var(--border); }
.flow__step { position: relative; margin-bottom: 40px; }
.flow__step:last-child { margin-bottom: 0; }
.flow__num { position: absolute; top: 0; left: -50px; width: 42px; height: 42px; background: var(--white); border: 3px solid var(--secondary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-en); font-weight: 800; font-size: 1.1rem; color: var(--secondary); z-index: 2; transition: var(--transition); }
.flow__step:hover .flow__num { background: var(--primary); border-color: var(--primary); color: var(--white); }
.flow__content { background: var(--white); padding: 24px 30px; border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: var(--transition); }
.flow__step:hover .flow__content { box-shadow: var(--shadow-lg); border-color: var(--primary); }
.flow__content h3 { font-size: 1.15rem; font-weight: 800; color: var(--dark); margin-bottom: 8px; }
.flow__content p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }

/* ─────────────────────────────────────────
   Floating CTA & Footer
───────────────────────────────────────── */
.floating-cta { position: fixed; bottom: 24px; right: 24px; z-index: 1000; opacity: 0; transform: translateY(20px); transition: var(--transition); }
.floating-cta.visible { opacity: 1; transform: translateY(0); }
.floating-btn { display: flex; align-items: center; gap: 8px; padding: 12px 24px; border-radius: 50px; font-size: 0.9rem; font-weight: 700; box-shadow: var(--shadow-lg); transition: var(--transition); background: var(--primary); color: var(--white); }
.floating-btn:hover { transform: translateY(-2px); background: var(--primary-dark); }
.footer__bottom { background: var(--dark); padding: 32px 0; text-align: center; color: rgba(255,255,255,0.4); font-size: 0.85rem; }

/* ─────────────────────────────────────────
   Responsive Media Queries
───────────────────────────────────────── */
@media (max-width: 1024px) {
  .header__nav { display: none; }
  .hamburger { display: flex; }
  .header__nav.open { display: flex; position: fixed; inset: 0; background: rgba(15,32,39,0.98); flex-direction: column; align-items: center; justify-content: center; z-index: 1000; }
  .header__nav.open .nav-list { flex-direction: column; gap: 16px; }
  .header__nav.open .nav-list a { font-size: 1.3rem; color: var(--white); }
  .about__split, .vision__grid, .abbott-section > div { grid-template-columns: 1fr !important; gap: 24px !important; }
  .map-grid { grid-template-columns: 1fr !important; gap: 24px !important; padding: 24px !important; }
}
@media (max-width: 640px) {
  .section { padding: 70px 0; }
  .floating-btn span { display: none; }
  .floating-btn { width: 56px; height: 56px; padding: 0; justify-content: center; border-radius: 50%; }
}