/* ==========================================================================
   mycorefam — Design Tokens & Base
   Concept: 「灯り」— 帰る場所の窓に灯る、あたたかな光。
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;500;600;800&family=Zen+Kaku+Gothic+New:wght@300;400;500;700;900&family=EB+Garamond:ital@1&display=swap');

:root {
  /* Color */
  --ink: #1B2430;
  --ink-soft: #384457;
  --navy: #24344A;
  --navy-deep: #182335;
  --paper: #F5F5F2;
  --paper-warm: #EFEEE7;
  --paper-card: #FBFBF9;
  --gold: #B8874A;
  --gold-soft: #D9B884;
  --gold-glow: #F0D9AE;
  --slate: #5C7290;
  --slate-soft: #8A9AB0;
  --line: #DCDFE3;
  --line-on-navy: rgba(255, 255, 255, 0.14);
  --white: #FFFFFF;

  /* Type */
  --font-display: 'Shippori Mincho', serif;
  --font-body: 'Zen Kaku Gothic New', sans-serif;
  --font-accent: 'EB Garamond', serif;

  /* Scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;
  --space-7: 10rem;

  --radius-s: 2px;
  --radius-m: 4px;

  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
}

img, svg { max-width: 100%; display: block; }

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.5;
  margin: 0;
  color: var(--ink);
  letter-spacing: 0.02em;
}

p { margin: 0; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (max-width: 640px) {
  .wrap { padding: 0 var(--space-3); }
}

/* --------------------------------------------------------------------
   Signature mark — 灯り / 窓のモチーフ
   -------------------------------------------------------------------- */

.arch-mark {
  display: inline-flex;
  flex-shrink: 0;
  width: 18px;
  height: 22px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--gold);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.eyebrow .arch-mark { width: 13px; height: 16px; }

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.section-heading .arch-mark {
  margin-top: 0.5em;
}

/* --------------------------------------------------------------------
   Header / Nav
   -------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 245, 242, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--navy);
  letter-spacing: 0.01em;
}

.logo .arch-mark { width: 16px; height: 20px; }

nav.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

nav.main-nav a {
  font-size: 0.92rem;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}

nav.main-nav a:hover { color: var(--navy); }

nav.main-nav a.current { color: var(--navy); font-weight: 700; }

nav.main-nav a.current::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 2px;
  background: var(--gold);
}

.nav-cta {
  background: var(--navy);
  color: var(--white) !important;
  padding: 10px 22px;
  border-radius: var(--radius-s);
  font-size: 0.88rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.04em;
  transition: background 0.2s ease;
}

.nav-cta:hover { background: var(--navy-deep); }

.nav-toggle { display: none; }

@media (max-width: 860px) {
  nav.main-nav { display: none; }
  .nav-toggle {
    display: block;
    background: none;
    border: none;
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--navy);
    padding: 8px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-s);
  }
}

/* --------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 15px 34px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: var(--radius-s);
  transition: all 0.25s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
}
.btn-primary:hover { background: var(--navy-deep); transform: translateY(-1px); }

.btn-gold {
  background: var(--gold);
  color: var(--white);
}
.btn-gold:hover { background: #A87840; transform: translateY(-1px); }

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

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: var(--line-on-navy);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: var(--white); }

/* --------------------------------------------------------------------
   Sections / generic
   -------------------------------------------------------------------- */

section { padding: var(--space-6) 0; }
@media (max-width: 640px) { section { padding: var(--space-5) 0; } }

.section-navy {
  background: var(--navy);
  color: var(--paper);
}
.section-navy h1, .section-navy h2, .section-navy h3 { color: var(--white); }

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line) 20%, var(--line) 80%, transparent);
  border: none;
  margin: 0;
}

.divider-gold {
  height: 1px;
  width: 64px;
  background: var(--gold);
  border: none;
  margin: var(--space-3) 0;
}

.lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 640px;
  line-height: 2;
}

.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--slate);
  background: rgba(92, 114, 144, 0.08);
  padding: 5px 12px;
  border-radius: 999px;
}

/* --------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------- */

.card {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: var(--space-4);
}

.card-quiet {
  border-left: 2px solid var(--gold-soft);
  padding-left: var(--space-3);
}

/* --------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------- */

footer.site-footer {
  background: var(--navy-deep);
  color: rgba(245, 245, 242, 0.65);
  padding: var(--space-5) 0 var(--space-3);
}

footer.site-footer .foot-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--line-on-navy);
}

footer.site-footer .logo { color: var(--white); }

footer.site-footer .foot-links {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}

footer.site-footer .foot-links h4 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold-soft);
  margin-bottom: var(--space-2);
}

footer.site-footer .foot-links a {
  display: block;
  font-size: 0.9rem;
  padding: 5px 0;
  color: rgba(245, 245, 242, 0.75);
  transition: color 0.2s ease;
}
footer.site-footer .foot-links a:hover { color: var(--gold-soft); }

footer.site-footer .foot-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-top: var(--space-3);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------
   Utility
   -------------------------------------------------------------------- */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: center;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.grid-2-tight { gap: var(--space-4); }

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: center;
}

@media (max-width: 860px) {
  .grid-2, .grid-3, .hero-grid { grid-template-columns: 1fr; gap: var(--space-4); }
}

.center { text-align: center; margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 860px) {
  nav.main-nav.nav-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 78px; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: var(--space-3) var(--space-4) var(--space-4);
    gap: var(--space-2);
  }
}