/* ==========================================================
   Give Space Urban Design — Biophilic Minimalism × Editorial
   ========================================================== */

:root{
  --bg: #EFF0F4;
  --text: rgba(5,61,129,0.82);
  --navy: #053D81;
  --blue: #9DC7E3;
  --yellow: #E1D756;
  --hairline: rgba(5,61,129,0.16);

  --font-jp: "Noto Sans JP", sans-serif;
  --font-jp-serif: "Noto Serif JP", serif;
  --font-en: "Fraunces", serif;

  --gap-xl: clamp(6rem, 14vw, 14rem);
  --gap-lg: clamp(4rem, 9vw, 9rem);
  --gap-md: clamp(2.4rem, 5vw, 4.5rem);
}

*{ box-sizing: border-box; }
html,body{ margin:0; padding:0; }

.sr-only{
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

body{
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-jp);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display: block; }
ol,ul{ margin:0; padding:0; list-style:none; }

/* ---------- language toggle visibility ---------- */
html:not(.lang-en) .lang-en{ display:none; }
html.lang-en .lang-ja{ display:none; }

/* ---------- fade-up reveal ---------- */
.fade-up{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.fade-up.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* ---------- header ---------- */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1200;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: clamp(1.4rem, 3vw, 2.4rem) clamp(1.4rem, 4vw, 3.2rem);
  mix-blend-mode: normal;
  pointer-events: none;
  background: transparent;
  -webkit-backdrop-filter: blur(0px);
  backdrop-filter: blur(0px);
  transition: background-color .35s ease, backdrop-filter .35s ease, box-shadow .35s ease;
}
.site-header.is-scrolled{
  background: rgba(239,240,244,0.86);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--hairline);
}
/* logo wordmark — masked from the official logo artwork so the
   typeface always matches the brand guideline exactly */
.logo-mark{
  display: block;
  background-color: var(--navy);
  aspect-ratio: 225.83 / 59.43;
  -webkit-mask: url('assets/img/logo_givespave-urbandesign.svg') no-repeat center / contain;
  mask: url('assets/img/logo_givespave-urbandesign.svg') no-repeat center / contain;
}
.brand-mark{
  pointer-events: auto;
  width: clamp(120px, 14vw, 165px);
}

.header-controls{
  display: flex;
  align-items: center;
  gap: 1.6rem;
  pointer-events: auto;
}

.lang-switch{
  display: flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}
.lang-switch__btn{
  background: none;
  border: none;
  padding: 0.2em 0.1em;
  font: inherit;
  letter-spacing: inherit;
  color: var(--text);
  opacity: 0.45;
  cursor: pointer;
  position: relative;
}
.lang-switch__btn.is-active{
  opacity: 1;
}
.lang-switch__btn.is-active::after{
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -0.25em;
  height: 1px;
  background: var(--navy);
}
.lang-switch__sep{ opacity: 0.4; }

.menu-toggle{
  position: relative;
  width: 30px; height: 18px;
  background: none; border: none; padding: 0;
  cursor: pointer;
}
.menu-toggle span{
  position: absolute; left: 0; right: 0; height: 1px;
  background: var(--text);
  transition: transform .35s ease, opacity .25s ease, top .35s ease;
}
.menu-toggle span:nth-child(1){ top: 0; }
.menu-toggle span:nth-child(2){ top: 17px; }
.menu-toggle.is-active span:nth-child(1){ top: 8px; transform: rotate(45deg); }
.menu-toggle.is-active span:nth-child(2){ top: 8px; transform: rotate(-45deg); }

/* ---------- nav menu (full-screen) ---------- */
.nav-menu{
  position: fixed; inset: 0;
  z-index: 1100;
  background: var(--bg);
  opacity: 0; visibility: hidden;
  transition: opacity .4s ease, visibility 0s linear .4s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-menu.is-open{
  opacity: 1; visibility: visible;
  transition: opacity .4s ease;
}
.nav-menu ul{
  text-align: center;
}
.nav-menu li + li{ margin-top: clamp(1.6rem, 4vw, 2.6rem); }
.nav-menu a{
  font-family: var(--font-en);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 400;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  transition: opacity .25s ease;
}
.nav-menu a:hover{ color: var(--navy); }
.nav-jp{ display:none; }
.nav-menu .i18n .lang-ja,
.nav-menu .i18n .lang-en{
  font-family: var(--font-jp);
  font-size: 0.85rem;
  font-weight: 400;
  opacity: 0.55;
  letter-spacing: 0.04em;
}
body.menu-open{ overflow: hidden; }

/* ---------- layout helpers ---------- */
.section{
  position: relative;
  padding: var(--gap-xl) clamp(1.4rem, 6vw, 6rem);
  max-width: 1500px;
  margin: 0 auto;
}
.offset-left{ margin-right: clamp(0rem, 12vw, 14rem); }
.offset-right{ margin-left: clamp(0rem, 12vw, 14rem); }
@media (max-width: 760px){
  .offset-left, .offset-right{ margin: 0; }
}

.section__head{
  margin-bottom: var(--gap-lg);
}
.section__no{
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--blue);
  display: block;
  margin-bottom: 1.2rem;
}
.section__title{
  font-family: var(--font-en);
  font-weight: 400;
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  line-height: 1.05;
  margin: 0;
  letter-spacing: -0.01em;
  color: var(--navy);
}
.section__title-sub{
  margin: 1.2rem 0 0;
  font-size: 1rem;
  font-weight: 400;
  color: var(--blue);
  letter-spacing: 0.04em;
}

/* ---------- hero ---------- */
.hero{
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem clamp(1.4rem, 6vw, 6rem) 4rem;
  position: relative;
}
.hero__copy{
  max-width: 30em;
  align-self: flex-start;
  margin-left: clamp(0rem, 4vw, 4rem);
}
.hero__lead{
  font-size: 1rem;
  line-height: 2;
  font-weight: 300;
  margin: 0 0 var(--gap-md);
}
.hero__wordmark{
  width: clamp(20rem, 60vw, 48rem);
  align-self: flex-end;
  margin: 0 clamp(0rem, 3vw, 2rem) var(--gap-md) 0;
}
.hero__sub{
  max-width: 36em;
  align-self: flex-end;
  text-align: right;
  font-size: 1rem;
  color: var(--text);
  margin: 0 clamp(0rem, 3vw, 2rem) 0 0;
}
.hero__scroll{
  position: absolute;
  bottom: 2.4rem; left: clamp(1.4rem, 6vw, 6rem);
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  opacity: 0.5;
  writing-mode: vertical-rl;
}

@media (max-width: 760px){
  .hero__copy{ margin-left: 0; }
  .hero__wordmark{ align-self: center; width: clamp(16rem, 80vw, 22rem); }
  .hero__sub{ align-self: center; text-align: left; margin-right: 0; }
}

/* ---------- prose / editorial text ---------- */
.prose{
  max-width: 38em;
  font-size: 1.02rem;
  line-height: 2;
}
.prose p{ margin: 0 0 1.6em; }
.prose p:last-child{ margin-bottom: 0; }
.prose .lead{
  font-family: var(--font-jp-serif);
  font-size: 1.2rem;
  line-height: 1.85;
  color: var(--navy);
  margin-bottom: 1.8em;
}
.lang-en .prose, .prose .lang-en{
  font-family: var(--font-en);
}

.lead-statement{
  font-family: var(--font-jp-serif);
  font-size: clamp(1.3rem, 3vw, 2rem);
  line-height: 1.75;
  max-width: 46em;
  color: var(--navy);
  margin: 0 0 var(--gap-lg);
}
.lead-statement .lang-en{
  font-family: var(--font-en);
  font-style: italic;
  font-size: clamp(1.05rem, 2vw, 1.4rem);
}

/* ---------- mission / value blocks ---------- */
.mv-block{ margin-bottom: var(--gap-lg); }
.mv-block:last-child{ margin-bottom: 0; }
.mv-block__title{
  font-family: var(--font-en);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 400;
  margin: 0 0 2.2rem;
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 0.8rem;
  color: var(--navy);
}
.mv-block__title-sub{
  font-family: var(--font-jp);
  font-size: 0.85rem;
  color: var(--blue);
  font-weight: 400;
}
.mv-list li{
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
}
.mv-list li:last-child{ border-bottom: none; }
.mv-list h4{
  margin: 0;
  font-size: 1.05rem;
  font-weight: 500;
}
.mv-list h4 .jp-gloss{
  display: block;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--blue);
  margin-top: 0.3em;
}
.mv-list p{ margin: 0; font-size: 0.95rem; line-height: 1.85; opacity: 0.88; }
@media (max-width: 600px){
  .mv-list li{ grid-template-columns: 1fr; gap: 0.6rem; }
}

/* ---------- team ---------- */
.person{
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  margin-bottom: var(--gap-lg);
}
.person--lead{ margin-bottom: var(--gap-xl); }
.person__photo{
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
  filter: grayscale(0.15);
}
.person--lead .person__photo{ width: 260px; }
.person__role{
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--blue);
  margin: 0.4rem 0 0;
  text-transform: uppercase;
}
.person__name{
  font-family: var(--font-jp-serif);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 500;
  margin: 0.5rem 0 0;
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  flex-wrap: wrap;
  color: var(--navy);
}
.person__name .en{
  font-family: var(--font-en);
  font-size: 0.95rem;
  font-weight: 400;
  opacity: 0.6;
}
.person__title-en{
  font-family: var(--font-en);
  font-style: italic;
  font-size: 0.92rem;
  opacity: 0.65;
  margin: 0.5rem 0 1.4rem;
}
.person__bio{ font-size: 0.94rem; line-height: 1.95; margin: 0; opacity: 0.9; }
.person__link{
  display: inline-block;
  margin-top: 1.2rem;
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--navy);
  border-bottom: 1px solid var(--navy);
}

.person-grid{ display: block; }
@media (max-width: 760px){
  .person, .person--lead{ grid-template-columns: 1fr; }
  .person__photo, .person--lead .person__photo{ width: 140px; }
}

/* ---------- profile / info list ---------- */
.info-list{
  margin-top: var(--gap-md);
  border-top: 1px solid var(--hairline);
  max-width: 38em;
}
.info-list > div{
  display: grid;
  grid-template-columns: 9em 1fr;
  gap: 1.5rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.92rem;
}
.info-list dt{
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  opacity: 0.55;
  text-transform: uppercase;
}
.info-list dd{ margin: 0; }
@media (max-width: 600px){
  .info-list > div{ grid-template-columns: 1fr; gap: 0.3rem; }
}

/* ---------- history timeline ---------- */
.timeline{ max-width: 50em; }
.timeline__item{
  display: grid;
  grid-template-columns: 7em 1fr;
  gap: 2rem;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--hairline);
}
.timeline__item:first-child{ border-top: 1px solid var(--hairline); }
.timeline__year{
  font-family: var(--font-en);
  font-size: 1.05rem;
  color: var(--navy);
  font-weight: 500;
}
.timeline__item p{ margin: 0; font-size: 0.92rem; line-height: 1.9; opacity: 0.88; }
@media (max-width: 600px){
  .timeline__item{ grid-template-columns: 1fr; gap: 0.5rem; }
}

/* ---------- cta ---------- */
.cta{ margin-top: var(--gap-lg); text-align: center; }
.cta__btn{
  display: inline-block;
  padding: 1.1em 2.6em;
  background: var(--yellow);
  border: 1px solid var(--yellow);
  border-radius: 999px;
  font-size: 0.95rem;
  color: var(--navy);
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}
.cta__btn .en{ display: block; font-family: var(--font-en); font-size: 0.78rem; opacity: 0.6; margin-top: 0.3em; }
.cta__btn:hover{ background: var(--navy); border-color: var(--navy); color: var(--bg); }

/* ---------- footer ---------- */
.site-footer{
  background: var(--navy);
  color: var(--bg);
  padding: var(--gap-md) clamp(1.4rem, 6vw, 6rem);
  text-align: center;
}
.site-footer__logo{ width: 150px; margin: 0 auto 1.4rem; }
.site-footer__copy{
  font-family: var(--font-en);
  font-size: 0.78rem;
  opacity: 0.7;
  margin: 0;
}

.br-pc{ display: inline; }
.nowrap-pc{ white-space: nowrap; }
@media (max-width: 600px){
  .br-pc{ display: none; }
  .nowrap-pc{ white-space: normal; }
}