/* ===== COMPONENTS ===== */
/* セクション・パーツ単位のスタイル。命名はBEMを基本とする。 */

/* ---------- HEADER ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  height: var(--header-height);
  background-color: transparent;
  color: var(--color-text);
  transition:
    height var(--duration-normal) var(--ease-main),
    background-color var(--duration-normal) var(--ease-main);
}

.site-header.is-scrolled {
  height: 72px;
  background-color: rgba(13, 13, 13, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.global-nav__list {
  display: flex;
  gap: clamp(16px, 2vw, 40px);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.global-nav__list a {
  transition: color var(--duration-fast) var(--ease-main);
}

.global-nav__list a:hover,
.global-nav__list a:focus-visible {
  color: var(--color-accent);
}

/* 現在ページ表示: ヘッダー/フルスクリーンメニュー/フッターナビ共通 */
.global-nav__list a[aria-current="page"],
.fullscreen-menu__list a[aria-current="page"],
.site-footer__nav a[aria-current="page"] {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.menu-button {
  display: none;
  position: relative;
  z-index: 950;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  transition: color var(--duration-fast) var(--ease-main);
}

.menu-button[aria-expanded="true"] {
  color: var(--color-dark-text);
}

/* ---------- フルスクリーンメニュー ---------- */

.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-dark-text);
  clip-path: inset(0 0 100% 0);
  pointer-events: none;
  transition: clip-path var(--duration-normal) var(--ease-main);
}

.fullscreen-menu.is-open {
  clip-path: inset(0 0 0% 0);
  pointer-events: auto;
}

.fullscreen-menu__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(12px, 2.6vw, 28px);
}

.fullscreen-menu__list a {
  font-size: clamp(2.25rem, 8vw, 5rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 1;
  transition: opacity var(--duration-fast) var(--ease-main);
}

.fullscreen-menu__list a:hover,
.fullscreen-menu__list a:focus-visible {
  opacity: 0.55;
}

/* ---------- HERO ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--header-height);
  padding-bottom: 96px;
  overflow: hidden;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to right,
    var(--color-border) 0,
    var(--color-border) 1px,
    transparent 1px,
    transparent calc(100% / 12)
  );
  opacity: 0.6;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: clamp(5rem, 11vw, 11rem);
  line-height: 0.82;
  letter-spacing: -0.07em;
  text-transform: uppercase;
}

.hero__title-line {
  display: block;
}

.hero__title-line--shift {
  margin-left: clamp(40px, 14vw, 220px);
}

.hero__subtitle {
  margin-top: 32px;
  font-size: clamp(1rem, 2vw, 1.35rem);
  max-width: 32em;
}

.hero__tags {
  margin-top: 40px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-muted);
  text-transform: uppercase;
}

.hero__location {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-muted);
}

.hero__scroll {
  position: absolute;
  left: var(--page-padding);
  bottom: 32px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-muted);
}

/* ---------- PHILOSOPHY ---------- */

.philosophy {
  padding-block: clamp(120px, 14vw, 208px);
  border-top: 1px solid var(--color-border);
}

.philosophy__grid {
  align-items: start;
}

.philosophy__heading {
  grid-column: 1 / -1;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 48px;
}

.philosophy__body {
  position: relative;
  grid-column: 6 / -1;
  padding-left: clamp(20px, 2.5vw, 40px);
}

.philosophy__body-line {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}

.philosophy__body .philosophy__heading-ja {
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 40px;
}

.philosophy__body p {
  font-size: 17px;
  line-height: 1.9;
  color: #ffffff;
  margin-bottom: 24px;
}

.philosophy__body p:last-child {
  margin-bottom: 0;
}

.philosophy__eyebrow-accent {
  color: var(--color-accent);
}

/* ---------- 共通: セクション見出し ---------- */
/* WORKS削除に伴い、HEROより一段小さい範囲で存在感を強めたサイズへ統一する */

.services__heading,
.strengths__heading,
.process__heading,
.about-preview__heading,
.faq__heading,
.contact-cta__heading,
.contact-intro__heading,
.before-send__heading,
.next-steps__heading,
.privacy-intro__heading,
.who-we-are__heading,
.working-style__heading,
.principles__heading,
.capabilities__heading,
.location__heading,
.profile__heading {
  font-size: clamp(3.25rem, 5.5vw, 6.5rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  margin-bottom: 32px;
  /* 長い英単語(COMMUNICATION.等)が狭い画面幅でjs-reveal-maskのoverflow:hiddenにより
     画面外へ切れて消えることを防ぐ最終防御。通常幅では効果を持たない。 */
  overflow-wrap: break-word;
}

.services__intro,
.process__intro {
  max-width: 40em;
  color: var(--color-muted);
  margin-bottom: 56px;
}

/* ---------- SERVICES ---------- */
/* PHILOSOPHYの直後に続くため、背景をわずかに明るくして接続の唐突さを和らげる */

.services {
  padding-block: var(--section-space);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.service-list {
  display: flex;
  flex-direction: column;
}

.service-row {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr 2fr auto;
  align-items: center;
  gap: 16px 32px;
  padding-block: 44px;
  border-top: 1px solid var(--color-border);
  transition:
    background-color var(--duration-fast) var(--ease-main),
    color var(--duration-fast) var(--ease-main),
    padding-block var(--duration-fast) var(--ease-main);
}

.service-row:first-child {
  border-top: none;
}

.service-row__no {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-muted);
  transition: color var(--motion-base) var(--ease-out);
}

.service-row__name {
  font-size: clamp(1.6rem, 2.8vw, 2.5rem);
  text-transform: uppercase;
  display: inline-block;
  transition: transform var(--motion-base) var(--ease-out);
}

.service-row__desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-muted);
  opacity: 0.8;
  transition: opacity var(--motion-base) var(--ease-out);
}

.service-row__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
  justify-self: end;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.service-row__link-arrow {
  display: inline-block;
  transition: transform var(--motion-base) var(--ease-out);
}

/* ホバー時: 背景がわずかに明るくなり、名前と矢印が右へ動き、番号が蛍光グリーンになる(motion instruction 7章)。
   スマートフォンのホバー依存を避けるため、hover:hover環境のみに限定する。 */
@media (hover: hover) and (pointer: fine) {
  .service-row {
    transition:
      background-color var(--motion-base) var(--ease-out),
      border-top-color var(--duration-fast) var(--ease-main);
  }

  .service-row:hover {
    background-color: rgba(242, 240, 233, 0.05);
  }

  .service-row:hover .service-row__no {
    color: var(--color-accent);
  }

  .service-row:hover .service-row__name {
    transform: translateX(8px);
  }

  .service-row:hover .service-row__desc {
    opacity: 1;
  }

  .service-row:hover .service-row__link-arrow {
    transform: translateX(12px);
  }
}

.service-row:focus-within {
  background-color: rgba(242, 240, 233, 0.05);
}

.service-row:focus-within .service-row__no {
  color: var(--color-accent);
}

.service-row:focus-within .service-row__desc {
  opacity: 1;
}

/* ---------- WHY ALMAKE (strengths) ---------- */

.strengths {
  padding-block: var(--section-space);
  border-top: 1px solid var(--color-border);
}

.strengths__list {
  display: flex;
  flex-direction: column;
}

.strengths__item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
  padding-block: 40px;
  border-top: 1px solid var(--color-border);
  transition:
    border-top-color var(--duration-normal) var(--ease-main),
    opacity var(--motion-base) var(--ease-out);
}

.strengths__item:first-child {
  border-top: none;
}

/* 現在項目のハイライト(motion instruction 7章)。
   .js-reveal.is-visibleの汎用opacity:1ルールより後に、確定した見た目(非activeは0.55)を上書きする。
   詳細度を.js-reveal.is-visibleより上げるため、あえて.strengths__itemを重ねて指定している。 */
.strengths__item.js-reveal.is-visible {
  opacity: 0.55;
}

.strengths__item.js-reveal.is-visible.is-active {
  opacity: 1;
  border-top-color: var(--color-accent);
}

.strengths__item-no {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: color var(--motion-base) var(--ease-out);
  color: var(--color-accent);
}

.strengths__item-title {
  font-size: clamp(2rem, 4.4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.strengths__item-desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-muted);
  align-self: center;
}

/* ---------- PROCESS ---------- */

.process {
  padding-block: var(--section-space);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-deep);
}

.process__timeline {
  position: relative;
}

.process__line {
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--color-border);
}

.process__line-fill {
  width: 100%;
  height: 0%;
  background: var(--color-accent);
  transition: height 0.5s var(--ease-main);
}

.process__list {
  display: flex;
  flex-direction: column;
  padding-left: 40px;
}

.process__step {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas: "title label" "title desc";
  column-gap: 48px;
  padding-block: 40px;
  border-top: 1px solid var(--color-border);
}

.process__step:first-child {
  border-top: none;
  padding-top: 0;
}

.process__step-dot {
  position: absolute;
  left: -40px;
  top: 44px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition:
    background-color var(--duration-fast) var(--ease-main),
    border-color var(--duration-fast) var(--ease-main),
    transform var(--motion-base) var(--ease-out);
}

.process__step.is-active .process__step-dot,
.process__step.is-passed .process__step-dot {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

/* 現在工程の円を拡大する(motion instruction 7章) */
.process__step.is-active .process__step-dot {
  transform: scale(1.5);
}

.process__step-title {
  grid-area: title;
  align-self: start;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
  letter-spacing: 0.05em;
  color: var(--color-text);
  transition: color var(--duration-fast) var(--ease-main);
}

.process__step.is-active .process__step-title,
.process__step.is-passed .process__step-title {
  color: var(--color-accent);
}

.process__step-label {
  grid-area: label;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.process__step-desc {
  grid-area: desc;
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-muted);
  transition: color var(--motion-base) var(--ease-out);
}

/* 現在工程の本文を明るくする(motion instruction 7章) */
.process__step.is-active .process__step-desc {
  color: var(--color-text);
}

/* ---------- ABOUT ---------- */

.about-preview {
  padding-block: var(--section-space);
  border-top: 1px solid var(--color-border);
}

.about-preview__grid {
  align-items: center;
}

.about-preview__visual {
  grid-column: 1 / 6;
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-preview__visual-grid {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, var(--color-border) 0, var(--color-border) 1px, transparent 1px, transparent calc(100% / 6)),
    repeating-linear-gradient(to bottom, var(--color-border) 0, var(--color-border) 1px, transparent 1px, transparent calc(100% / 6));
  opacity: 0.5;
}

.about-preview__visual-mark {
  position: relative;
  font-size: clamp(6rem, 14vw, 11rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.about-preview__visual-coord {
  position: absolute;
  left: 20px;
  bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--color-muted);
}

.about-preview__visual-rect {
  position: absolute;
  width: 42%;
  height: 32%;
  right: 12%;
  top: 14%;
  border: 1px solid var(--color-accent);
  transform: rotate(-6deg);
}

.about-preview__content {
  grid-column: 7 / -1;
}

.about-preview__heading-ja {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 32px;
}

.about-preview__body {
  max-width: 40em;
  margin-bottom: 40px;
}

.about-preview__body p {
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-preview__body p:last-child {
  margin-bottom: 0;
}

.about-preview__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  border-bottom: 1px solid currentColor;
}

/* ---------- FAQ ---------- */

.faq {
  padding-block: var(--section-space);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.faq__list {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--color-border);
}

.faq__item {
  border-top: 1px solid var(--color-border);
}

.faq__question {
  margin: 0;
}

.faq__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding-block: 36px;
  text-align: left;
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
}

.faq__trigger-text {
  flex: 1;
  transition: color var(--motion-base) var(--ease-out);
}

.faq__trigger[aria-expanded="true"] .faq__trigger-text {
  color: var(--color-accent);
}

.faq__trigger-icon {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  transition:
    color var(--duration-fast) var(--ease-main),
    transform var(--motion-base) var(--ease-out);
}

.faq__trigger-icon::before,
.faq__trigger-icon::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.faq__trigger-icon::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1.5px;
  transform: translateY(-50%);
}

.faq__trigger-icon::after {
  left: 50%;
  top: 0;
  width: 1.5px;
  height: 100%;
  transform: translateX(-50%);
}

/* ＋が45度回転して×へ変化する(motion instruction 7章) */
.faq__trigger[aria-expanded="true"] .faq__trigger-icon {
  color: var(--color-accent);
  transform: rotate(45deg);
}

.faq__answer {
  overflow: hidden;
}

.faq__answer-inner {
  padding-bottom: 36px;
}

.faq__answer p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.faq__answer p:last-child {
  margin-bottom: 0;
}

/* JS有効時のみアコーディオン化する(プログレッシブエンハンスメント)。
   JS無効時は.js-enabledが付与されないため、回答は常に全文表示される。 */
html.js-enabled .faq__answer {
  max-height: 0;
  opacity: 0;
  transition:
    max-height var(--duration-normal) var(--ease-main),
    opacity var(--motion-base) var(--ease-out);
}

html.js-enabled .faq__item.is-open .faq__answer {
  opacity: 1;
}

/* .faq__item.is-openの実際のmax-height値はaccordion.jsがscrollHeightを計測しinlineで設定する */

/* ---------- CONTACT CTA ---------- */

.contact-cta {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--color-light-bg);
  color: var(--color-dark-text);
}

.contact-cta__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  opacity: 0.6;
  margin-bottom: 28px;
}

.contact-cta__heading {
  font-size: clamp(2.5rem, 7vw, 6rem);
  line-height: 0.95;
  margin-bottom: 36px;
}

.contact-cta__heading .js-reveal-mask__inner {
  transition-delay: 80ms;
}

.contact-cta__body {
  max-width: 32em;
  margin-bottom: 16px;
  transition-delay: 200ms;
}

/* 見出し→本文→ボタンの順に表示する(motion instruction 14章) */
.contact-cta__button.js-reveal {
  transition-delay: 320ms;
}

.contact-cta__note {
  transition-delay: 380ms;
}

.contact-cta__button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 36px;
  padding: 24px 56px;
  min-height: 56px;
  background: var(--color-dark-text);
  color: var(--color-light-bg);
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  letter-spacing: 0.12em;
}

.contact-cta__button-fill {
  position: absolute;
  inset: -100%;
  border-radius: 50%;
  background: var(--color-accent);
  transform: scale(0);
}

.contact-cta__button-text {
  position: relative;
  z-index: 1;
  transition: color var(--duration-fast) var(--ease-main);
}

@media (hover: hover) and (pointer: fine) {
  .contact-cta__button:hover .contact-cta__button-fill,
  .contact-cta__button:focus-visible .contact-cta__button-fill {
    transform: scale(1);
    transition: transform var(--duration-normal) var(--ease-main);
  }

  .contact-cta__button:hover .contact-cta__button-text,
  .contact-cta__button:focus-visible .contact-cta__button-text {
    color: var(--color-dark-text);
  }
}

.contact-cta__note {
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  opacity: 0.6;
}

/* ---------- FOOTER ---------- */

.site-footer {
  padding-block: clamp(80px, 10vw, 140px) 48px;
  border-top: 1px solid var(--color-border);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 48px;
}

.site-footer__logo {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 16px;
}

.site-footer__tagline {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.site-footer__nav ul {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  text-align: right;
}

.site-footer__nav a {
  display: inline-block;
  padding-block: 8px;
  transition: color var(--duration-fast) var(--ease-main), transform var(--duration-fast) var(--ease-main);
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible {
  color: var(--color-accent);
}

@media (hover: hover) and (pointer: fine) {
  .site-footer__nav a:hover {
    transform: translateX(-4px);
  }
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 48px;
}

.site-footer__location {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--color-muted);
}

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 48px;
}

.site-footer__meta-item dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-bottom: 4px;
}

.site-footer__meta-item dd {
  font-size: 1rem;
}

.site-footer__copyright {
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* ---------- UNDER CONSTRUCTION(下層ページの準備中表示) ---------- */

.under-construction {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: var(--page-padding);
  text-align: center;
}

.under-construction__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--color-muted);
}

.under-construction__heading {
  font-size: clamp(2rem, 6vw, 4rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.under-construction__message {
  font-size: clamp(1rem, 2.4vw, 1.35rem);
  color: var(--color-muted);
}

.under-construction__back {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  border-bottom: 1px solid currentColor;
}