/* =============================================
   LOCALISM.BLOG — Landing Page Styles
   Inspired by chat-japanese.com
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
  --color-bg:        #faf8f5;
  --color-white:     #ffffff;
  --color-text:      #1a1a1a;
  --color-text-muted:#6b6b6b;
  --color-accent:    #e8531a;   /* orange — from logo */
  --color-teal:      #1a8fa0;   /* teal — inspired by chat-japanese */
  --color-teal-dark: #126e7c;
  --color-border:    #e8e4de;
  --color-card-bg:   #ffffff;
  --color-tag-bg:    #fff3ee;
  --color-tag-text:  #e8531a;

  --font-sans:  'Inter', 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;

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

  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.14);

  --header-h:   72px;
  --transition: 0.25s ease;
}

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

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

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

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

/* ---------- Container ---------- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* =============================================
   HEADER
   ============================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
  position: relative;
}

.logo-link {
  flex-shrink: 0;
  z-index: 1001;
  position: relative;
}
.logo-img {
  height: 44px;
  width: auto;
  display: block;
}

/* Nav */
.main-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--color-tag-bg);
  color: var(--color-accent);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
  padding: 4px;
  z-index: 1001;
  position: relative;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  width: 100%;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ハンバーガー → ✕ アニメーション */
.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-image: url('hero-bg.jpg');
  background-size: cover;
  background-position: center 40%;
  background-attachment: fixed;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 20, 30, 0.72) 0%,
    rgba(10, 20, 30, 0.45) 60%,
    rgba(10, 20, 30, 0.30) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 0 24px;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(232, 83, 26, 0.85);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.4);
}

.hero-title em {
  font-style: normal;
  color: #f5a623;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 300;
  line-height: 1.8;
  opacity: 0.92;
  margin-bottom: 36px;
  text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

.hero-btn {
  display: inline-block;
  padding: 14px 36px;
  background: var(--color-teal);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 100px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(26, 143, 160, 0.45);
}

.hero-btn:hover {
  background: var(--color-teal-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(26, 143, 160, 0.55);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  z-index: 2;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.7; transform: scaleY(1); }
  50%       { opacity: 0.3; transform: scaleY(0.6); }
}

/* intro-section removed */

//* =============================================
   SKIP LINK (accessibility)
   ============================================= */
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 9999;
  background: var(--color-teal);
  color: #fff;
  padding: 10px 20px;
  border-radius: 0 0 8px 8px;
  font-size: 0.9rem;
  font-weight: 700;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

/* =============================================
   BASE RESET & VARIABLES
   ============================================= */
.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-teal);
  background: rgba(26, 143, 160, 0.08);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-label.white {
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.15);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 16px;
  text-align: center;
}

.section-title.left { text-align: left; }

.section-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 48px;
}

/* =============================================
   TOC / BLOG CARDS
   ============================================= */
.toc-section {
  padding: 80px 0 96px;
  background: var(--color-bg);
}

.toc-section > .container > .section-label,
.toc-section > .container > .section-title,
.toc-section > .container > .section-desc {
  display: block;
  text-align: center;
}

.toc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* Card */
.toc-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.toc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-region-tag {
  background: var(--color-teal);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 8px 20px;
  text-align: center;
}

/* Alternate accent for variety */
.toc-card:nth-child(3n) .card-region-tag { background: var(--color-accent); }
.toc-card:nth-child(3n+2) .card-region-tag { background: #2a7a4b; }

.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-text);
}

.card-desc {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

/* card-info: region description */
.card-info {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 20px;
}

/* card-btn: see all articles button */
.card-btn {
  display: inline-block;
  padding: 10px 22px;
  background: var(--color-teal);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 100px;
  transition: background var(--transition), transform var(--transition);
  align-self: flex-start;
  margin-top: auto;
}

.card-btn:hover {
  background: var(--color-teal-dark);
  transform: translateY(-2px);
}

.toc-card:nth-child(3n) .card-btn { background: var(--color-accent); }
.toc-card:nth-child(3n) .card-btn:hover { background: #c94310; }
.toc-card:nth-child(3n+2) .card-btn { background: #2a7a4b; }
.toc-card:nth-child(3n+2) .card-btn:hover { background: #1e5c37; }

/* =============================================
   ABOUT SECTION
   ============================================= */
.about-section {
  padding: 96px 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  font-size: 0.97rem;
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-text strong { color: var(--color-text); }

.about-btn {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 28px;
  background: var(--color-teal);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 100px;
  transition: background var(--transition), transform var(--transition);
}

.about-btn:hover {
  background: var(--color-teal-dark);
  transform: translateY(-2px);
}

/* About visual cards */
.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-card-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 340px;
}

.about-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.about-card:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

.ac-icon { font-size: 1.6rem; }

.ac-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.ac1 { border-left: 4px solid var(--color-teal); }
.ac2 { border-left: 4px solid var(--color-accent); }
.ac3 { border-left: 4px solid #2a7a4b; }

/* =============================================
   INSTAGRAM SECTION
   ============================================= */
.instagram-section {
  padding: 96px 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.instagram-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.instagram-text p {
  font-size: 0.97rem;
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 24px;
}

.instagram-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 28px;
  background: linear-gradient(135deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 100px;
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 4px 20px rgba(220, 39, 67, 0.35);
}

.instagram-btn:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}

/* Mock Instagram card */
.insta-mock {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  max-width: 340px;
  margin: 0 auto;
}

.insta-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.insta-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f09433, #dc2743, #bc1888);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  flex-shrink: 0;
}

.insta-handle {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.insta-handle strong {
  font-size: 0.88rem;
  color: var(--color-text);
}

.insta-handle span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.insta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  padding: 3px;
}

.insta-tile {
  aspect-ratio: 1;
  border-radius: 4px;
  background-size: cover;
  background-position: center;
}

.t1 { background-color: #c8a97e; background-image: linear-gradient(135deg, #c8a97e, #8b6340); }
.t2 { background-color: #7eb8c8; background-image: linear-gradient(135deg, #7eb8c8, #3a7a8b); }
.t3 { background-color: #c87e8b; background-image: linear-gradient(135deg, #c87e8b, #8b3a4a); }
.t4 { background-color: #7ec87e; background-image: linear-gradient(135deg, #7ec87e, #3a8b4a); }
.t5 { background-color: #c8c87e; background-image: linear-gradient(135deg, #c8c87e, #8b8b3a); }
.t6 { background-color: #a07ec8; background-image: linear-gradient(135deg, #a07ec8, #5a3a8b); }

.insta-follow-btn {
  display: block;
  text-align: center;
  padding: 14px;
  font-size: 0.88rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  transition: opacity var(--transition);
}

.insta-follow-btn:hover { opacity: 0.88; }

@media (max-width: 768px) {
  .instagram-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background: #111;
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  height: 40px;
  width: auto;
  margin-bottom: 12px;
  opacity: 0.92;
}

.footer-tagline {
  font-size: 0.88rem;
  margin-bottom: 6px;
  opacity: 0.8;
}

.footer-copy {
  font-size: 0.78rem;
  opacity: 0.55;
}

.footer-copy a { color: var(--color-teal); }
.footer-copy a:hover { text-decoration: underline; }

.footer-nav h4 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}

.footer-nav a:hover { color: #fff; }

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.78rem;
  opacity: 0.4;
}

/* =============================================
   SCROLL REVEAL ANIMATION
   ============================================= */
.reveal-ready {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal-ready.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger for grid items */
.toc-card:nth-child(2).reveal-ready { transition-delay: 0.08s; }
.toc-card:nth-child(3).reveal-ready { transition-delay: 0.16s; }
.toc-card:nth-child(4).reveal-ready { transition-delay: 0.06s; }
.toc-card:nth-child(5).reveal-ready { transition-delay: 0.12s; }
.toc-card:nth-child(6).reveal-ready { transition-delay: 0.18s; }
.intro-stat:nth-child(2).reveal-ready { transition-delay: 0.08s; }
.intro-stat:nth-child(3).reveal-ready { transition-delay: 0.16s; }
.intro-stat:nth-child(4).reveal-ready { transition-delay: 0.24s; }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .toc-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }

  /* Header */
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px 24px;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 998;
    box-shadow: var(--shadow-md);
    visibility: hidden;
  }

  .main-nav.open {
    transform: translateY(0);
    visibility: visible;
  }

  .nav-list {
    flex-wrap: wrap;
    gap: 8px;
  }

  .nav-link {
    padding: 8px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.9rem;
  }

  /* ロゴとハンバーガーが常に見えるように */
  .header-inner {
    justify-content: space-between;
  }

  .logo-img {
    height: 36px;
  }

  /* Hero */
  .hero { background-attachment: scroll; }
  .hero-subtitle br { display: none; }

  /* Sections */
  .toc-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { display: none; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}