/*
Theme Name:  bloomalot underscores child
Template:   underscores
Author:     sumie goto
Description: 子テーマ
Version:    1.0.0
Text Domain: underscores-child
Last updated: May 29, 2026
*/

/* ============================================================
   bloomalot.jp  —  Site-wide stylesheet  (unified)
   Design: editorial minimalism, mobile-first
   Fonts:  Noto Serif JP (見出し) + Noto Sans JP (本文)

   Table of contents
   -----------------
   1.  Tokens & reset
   2.  Base typography
   3.  Layout helpers
   4.  Navigation
   5.  Site footer
   6.  Scroll animation
   7.  Buttons & links
   8.  Page header (inner pages)
   9.  Section chrome
   10. Vision text & blockquote
   11. SVG diagram wrapper
   12. Cards: bridge, challenge, context, info
   13. Role tags
   14. Portrait / about-intro
   15. Timeline
   16. Project list (大樹町 etc.)
   17. Insight list
   18. Hero (top page)
   19. Works index grid (top page)
   20. Vision page specifics
   21. Contact form
   22. Responsive overrides
   ============================================================ */


/* ── 1. Tokens & reset ───────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* colour */
  --ink:        #1a1a1a;
  --ink-mid:    #4a4a4a;
  --ink-light:  #8a8a8a;
  --paper:      #fafaf7;
  --paper-warm: #f3f0e8;
  --accent:     #2d6a4f;
  --accent-lt:  #d8ede3;
  --line:       #e0ddd5;

  /* type */
  --ff-serif: 'Noto Serif JP', Georgia, serif;
  --ff-sans:  'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

  /* layout */
  --max-w:  740px;
  --wide-w: 1080px;
  --side:   clamp(1.25rem, 5vw, 3rem);

  /* motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
  font-family: var(--ff-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}


/* ── 2. Base typography ──────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--ff-serif);
  font-weight: 400;
  line-height: 1.4;
}

p { line-height: 1.85; }

.en { font-family: Georgia, serif; letter-spacing: .04em; }


/* ── 3. Layout helpers ───────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--side);
}

.container--wide {
  width: 100%;
  max-width: var(--wide-w);
  margin-inline: auto;
  padding-inline: var(--side);
}


/* ── 4. Navigation ───────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem var(--side);
  max-width: var(--wide-w);
  margin-inline: auto;
}

.site-nav__inner a:visited{
  color:rgba(0, 0, 0, 0.8);
}
.site-nav__logo {
  font-family: var(--ff-serif);
  font-size: .95rem;
  letter-spacing: .12em;
  text-decoration: none;
  color: var(--ink);
}

#nav-links ul {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}

#nav-links a {
  font-size: .8rem;
  letter-spacing: .08em;
  text-decoration: none;
  color: var(--ink-mid);
  transition: color .2s;
}
#nav-links a:hover,
#nav-links a[aria-current="page"] { color: var(--accent); }

/* mobile hamburger — JS-toggled */
.site-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.site-nav__hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--ink);
  transition: transform .25s, opacity .25s;
}
.site-nav--open .site-nav__hamburger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-nav--open .site-nav__hamburger span:nth-child(2) { opacity: 0; }
.site-nav--open .site-nav__hamburger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 600px) {
  .site-nav__hamburger { display: flex; }
  .site-nav__links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: .5rem 0;
  }
  .site-nav--open .site-nav__links { display: flex; }
  .site-nav__links li a {
    display: block;
    padding: .75rem var(--side);
    font-size: .9rem;
  }
}


/* ── 5. Site footer ──────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem var(--side);
  max-width: var(--wide-w);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.site-footer__copy {
  font-size: .75rem;
  color: var(--ink-light);
  letter-spacing: .04em;
}

.site-footer__links ul{
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.site-footer__links a {
  font-size: .75rem;
  color: var(--ink-light);
  text-decoration: none;
  transition: color .2s;
}
.site-footer__links a:hover { color: var(--accent); }


/* ── 6. Scroll animation ─────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.fade-up.is-visible { opacity: 1; transform: translateY(0); }

/* stagger siblings */
.fade-up:nth-child(2) { transition-delay: .08s; }
.fade-up:nth-child(3) { transition-delay: .16s; }
.fade-up:nth-child(4) { transition-delay: .24s; }


/* ── 7. Buttons & links ──────────────────────────────────── */
.btn {
  display: inline-block;
  padding: .8rem 2.25rem;
  font-size: .8rem;
  letter-spacing: .14em;
  text-decoration: none;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  border-radius: 2px;
  transition: background .2s, color .2s;
  cursor: pointer;
  font-family: var(--ff-sans);
}
.btn:hover { background: var(--ink); color: var(--paper); }

.btn--accent {
  border-color: var(--accent);
  color: var(--accent);
}
.btn--accent:hover { background: var(--accent); color: var(--paper); }

.btn--fill {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
}
.btn--fill:hover { background: var(--ink); border-color: var(--ink); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-lt);
  padding-bottom: 1px;
  transition: border-color .2s;
}
.text-link:hover { border-color: var(--accent); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  justify-content: center;
}


/* ── 8. Page header (inner pages) ────────────────────────── */
.page-header {
  padding: clamp(3rem, 8vw, 6rem) var(--side) clamp(2rem, 5vw, 3.5rem);
  max-width: var(--max-w);
  margin-inline: auto;
  border-bottom: 1px solid var(--line);
}

.page-header__eyebrow {
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 1.25rem;
}

.page-header__title {
  font-size: clamp(1.9rem, 6vw, 3rem);
  line-height: 1.3;
}


/* ── 9. Section chrome ───────────────────────────────────── */
.section {
  padding: clamp(2.5rem, 7vw, 5rem) 0;
  border-bottom: 1px solid var(--line);
}
.section:last-of-type { border-bottom: none; }

.section__label {
  display: block;
  font-size: .68rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 2rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--line);
}


/* ── 10. Vision text & blockquote ────────────────────────── */
.vision-text {
  font-family: var(--ff-serif);
  font-size: clamp(1.05rem, 3vw, 1.3rem);
  line-height: 1.9;
  color: var(--ink);
}
.vision-text p + p { margin-top: 1.4em; }

.vision-quote,
.field-quote {
  margin: 2.5rem 0;
  padding-left: 1.25rem;
  border-left: 2px solid var(--accent);
  font-family: var(--ff-serif);
  font-size: clamp(.98rem, 2.8vw, 1.15rem);
  line-height: 1.9;
  color: var(--ink-mid);
}


/* ── 11. SVG diagram wrapper ─────────────────────────────── */
.diagram-wrap {
  margin: 2rem 0;
  background: var(--paper-warm);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2rem var(--side);
  overflow-x: auto;
}

.diagram-caption {
  font-size: .74rem;
  color: var(--ink-light);
  text-align: center;
  margin-top: 1rem;
  letter-spacing: .04em;
}


/* ── 12. Cards ───────────────────────────────────────────── */

/* bridge / info box */
.bridge-block {
  background: var(--paper-warm);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2rem;
}
.bridge-block__title {
  font-family: var(--ff-serif);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}
.bridge-block__text {
  font-size: .92rem;
  color: var(--ink-mid);
  line-height: 1.8;
}
.bridge-block__text + .bridge-block__text { margin-top: .75rem; }

/* challenge grid */
.challenge-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}
@media (min-width: 560px) {
  .challenge-grid { grid-template-columns: 1fr 1fr; }
}

.challenge-card {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
  background: var(--paper);
}
.challenge-card__icon { font-size: 1.1rem; margin-bottom: .5rem; line-height: 1; }
.challenge-card__title { font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: .4rem; }
.challenge-card__text  { font-size: .85rem; color: var(--ink-mid); line-height: 1.7; }

/* context grid (metadata) */
.context-block {
  background: var(--paper-warm);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.75rem 2rem;
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 560px) {
  .context-block { grid-template-columns: 1fr 1fr; }
}
.context-block__label {
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: .3rem;
}
.context-block__value { font-size: .92rem; color: var(--ink); line-height: 1.6; }


/* ── 13. Role tags ───────────────────────────────────────── */
.role-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.25rem; }

.role-tag {
  font-size: .72rem;
  letter-spacing: .06em;
  padding: .28rem .75rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-mid);
  background: var(--paper);
}
.role-tag--accent { border-color: var(--accent); color: var(--accent); }


/* ── 14. Portrait / about-intro ──────────────────────────── */
.about-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 600px) {
  .about-intro { grid-template-columns: 160px 1fr; gap: 2.5rem; align-items: start; }
}

.about-intro__portrait {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--paper-warm);
  border: 1px solid var(--line);
  overflow: hidden;
  flex-shrink: 0;
}
@media (min-width: 600px) {
  .about-intro__portrait { width: 100%; height: 160px; border-radius: 4px; }
}
.about-intro__portrait img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about-intro__portrait--placeholder {
  display: flex; align-items: center; justify-content: center;
  font-size: .7rem; color: var(--ink-light); letter-spacing: .05em;
}
.about-intro__name     { font-size: clamp(1.4rem, 4vw, 1.9rem); margin-bottom: .35rem; }
.about-intro__name-en  { font-size: .85rem; color: var(--ink-light); letter-spacing: .12em; display: block; margin-bottom: 1rem; }
.about-intro__lead     { font-size: clamp(.92rem, 2.2vw, 1.05rem); line-height: 1.9; color: var(--ink-mid); }
.about-intro__lead + .about-intro__lead { margin-top: .9rem; }


/* ── 15. Timeline ────────────────────────────────────────── */
.timeline { position: relative; padding-left: 1rem; }
.timeline::before {
  content: '';
  position: absolute; left: 0; top: .4rem; bottom: 0;
  width: 1px; background: var(--line);
}
.timeline__item {
  position: relative;
  padding: 0 0 2rem 1.5rem;
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: '';
  position: absolute; left: -3px; top: .5rem;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--line);
  border: 2px solid var(--paper);
}
.timeline__item--accent::before { background: var(--accent); }
.timeline__year  { font-size: .72rem; letter-spacing: .12em; color: var(--ink-light); margin-bottom: .25rem; }
.timeline__title { font-size: .95rem; font-weight: 600; color: var(--ink); margin-bottom: .2rem; }
.timeline__desc  { font-size: .88rem; color: var(--ink-mid); line-height: 1.7; }


/* ── 16. Project list ────────────────────────────────────── */
.project-list { display: flex; flex-direction: column; }

.project-item {
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.project-item:first-child { padding-top: 0; }
.project-item:last-child  { border-bottom: none; }
@media (min-width: 600px) {
  .project-item { grid-template-columns: 100px 1fr; gap: 2rem; align-items: start; }
}
.project-item__num {
  font-family: Georgia, serif;
  font-size: 2.5rem;
  color: var(--line);
  line-height: 1;
}
.project-item__tag {
  display: inline-block;
  font-size: .68rem; letter-spacing: .1em;
  padding: .2rem .65rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 2px;
  margin-bottom: .6rem;
}
.project-item__title   { font-family: var(--ff-serif); font-size: clamp(.98rem, 2.5vw, 1.2rem); margin-bottom: .6rem; line-height: 1.5; }
.project-item__meta    { font-size: .75rem; color: var(--ink-light); letter-spacing: .05em; margin-bottom: .75rem; }
.project-item__body    { font-size: .9rem; color: var(--ink-mid); line-height: 1.8; }
.project-item__body p + p { margin-top: .75rem; }
.project-item__deliverables {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: var(--paper-warm);
  border-radius: 3px;
  font-size: .83rem; color: var(--ink-mid); line-height: 1.75;
}
.project-item__deliverables strong {
  font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-light); display: block; margin-bottom: .35rem;
}


/* ── 17. Insight list ────────────────────────────────────── */
.insight-list { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 1.5rem; }

.insight-item { display: grid; grid-template-columns: 2rem 1fr; gap: .75rem; align-items: start; }
.insight-item__mark {
  width: 2rem; height: 2rem;
  border-radius: 50%;
  background: var(--accent-lt);
  display: flex; align-items: center; justify-content: center;
  font-family: Georgia, serif; font-size: .75rem; color: var(--accent);
  flex-shrink: 0; margin-top: .15rem;
}
.insight-item__text { font-size: .92rem; color: var(--ink-mid); line-height: 1.8; }
.insight-item__text strong { font-weight: 600; color: var(--ink); display: block; margin-bottom: .2rem; }


/* ── 18. Hero (top page) ─────────────────────────────────── */
.hero {
  padding: clamp(4rem, 12vw, 9rem) var(--side) clamp(3rem, 8vw, 6rem);
  max-width: var(--wide-w);
  margin-inline: auto;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 760px) {
  .hero { grid-template-columns: 1fr 340px; align-items: end; gap: 4rem; }
}


.hero__eyebrow {
  font-size: .7rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2.2rem, 7vw, 4rem);
  line-height: 1.25;
  margin-bottom: 1.75rem;
}

.hero__lead {
  font-size: clamp(.92rem, 2.2vw, 1.05rem);
  color: var(--ink-mid);
  line-height: 1.85;
  max-width: 480px;
  margin-bottom: 2.25rem;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: .85rem; }

/* hero side: SVG 概念図 */
.hero__diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
}
.hero__diagram-caption {
  font-size: .72rem;
  color: var(--ink-light);
  letter-spacing: .06em;
  text-align: center;
}


/* ── 19. Works index grid (top page) ─────────────────────── */
.works-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 600px) {
  .works-grid { grid-template-columns: 1fr 1fr; }
}

.works-card {
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 2rem;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: background .2s;
  margin: -1px 0 0 -1px;   /* collapse borders */
}
.works-card:hover { background: var(--paper-warm); }

.works-card__eyebrow {
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: .75rem;
}
.works-card__title {
  font-family: var(--ff-serif);
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  line-height: 1.45;
  margin-bottom: .75rem;
}
.works-card__desc {
  font-size: .85rem;
  color: var(--ink-mid);
  line-height: 1.75;
}
.works-card__arrow {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: .8rem;
  color: var(--accent);
  letter-spacing: .06em;
}


/* ── 20. Vision page specifics ───────────────────────────── */
.vision-axis {
  margin: 2.5rem 0;
}

.vision-axis__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (min-width: 560px) {
  .vision-axis__row { grid-template-columns: 1fr 1fr; }
}

.vision-axis__cell {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.5rem;
}
.vision-axis__cell--accent {
  border-color: var(--accent);
  background: var(--accent-lt);
}
.vision-axis__cell-label {
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: .5rem;
}
.vision-axis__cell--accent .vision-axis__cell-label { color: var(--accent); }
.vision-axis__cell-title {
  font-family: var(--ff-serif);
  font-size: 1.05rem;
  margin-bottom: .5rem;
}
.vision-axis__cell-text { font-size: .88rem; color: var(--ink-mid); line-height: 1.75; }


/* ── 21. Contact form ────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 680px) {
  .contact-grid { grid-template-columns: 1fr 280px; align-items: start; }
}

.form-group { margin-bottom: 1.5rem; }

.form-group label {
  display: block;
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--ink-mid);
  margin-bottom: .45rem;
}
.form-group .required {
  font-size: .65rem;
  color: var(--accent);
  margin-left: .35rem;
  letter-spacing: .06em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .7rem 1rem;
  font-family: var(--ff-sans);
  font-size: .92rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: border-color .2s, box-shadow .2s;
  appearance: none;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-lt);
}
.form-group textarea { min-height: 160px; resize: vertical; line-height: 1.7; }

.form-select-wrap { position: relative; }
.form-select-wrap::after {
  content: '▾';
  position: absolute; right: 1rem; top: 50%;
  transform: translateY(-50%);
  font-size: .75rem; color: var(--ink-light);
  pointer-events: none;
}

.form-submit { margin-top: 2rem; }

.form-notice {
  font-size: .8rem;
  color: var(--ink-light);
  margin-top: 1.5rem;
  line-height: 1.7;
}

/* contact sidebar */

.contact-info__item { margin-bottom: 1.75rem; }
.contact-info__label {
  font-size: .68rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: .4rem;
}
.contact-info__value {
  font-size: .9rem;
  color: var(--ink-mid);
  line-height: 1.7;
}
.contact-info__value a { color: var(--accent); text-decoration: none; }
.contact-info__value a:hover { text-decoration: underline; }


/* ── 22. CTA section (shared) ────────────────────────────── */
.cta-section {
  text-align: center;
  padding: clamp(2.5rem, 7vw, 5rem) var(--side);
}
.cta-section__lead {
  font-family: var(--ff-serif);
  font-size: clamp(1rem, 3vw, 1.2rem);
  color: var(--ink-mid);
  margin-bottom: 2rem;
  line-height: 1.85;
}


/* ── 23. Responsive overrides ────────────────────────────── */
@media (max-width: 480px) {
  .site-nav__links { gap: 1rem; }
  .timeline { padding-left: .75rem; }
  .timeline__item { padding-left: 1.25rem; }
  .works-card { padding: 1.5rem; }
  .bridge-block { padding: 1.5rem; }
}