/* 紹介 HP と DL サイトで共有する頭・足（orchestrator-web/www/shared/shell.css） */

:root {
  --bg: #080A0F;
  --ink: #F5F6F8;
  --ink-dim: #9AA3B2;
  --line: rgba(245, 246, 248, .10);
  --line-strong: rgba(245, 246, 248, .22);
  --surface-1: rgba(245, 246, 248, .035);
  --surface-2: rgba(245, 246, 248, .07);
  --cyan: #00C6FF;
  --blue: #0072FF;
  --font-jp: system-ui, -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN",
    "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  --font-en: "Aijus", system-ui, -apple-system, "Segoe UI",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  --pad-inline: max(clamp(18px, 5vw, 44px), calc((100% - 1180px) / 2));
  --ease: .18s ease;
}

@font-face {
  font-family: "Aijus";
  src: url("../assets/Aijus-Regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

.brand span,
.nav nav a,
.nav-cta,
.lang-code,
.name-orchestrator {
  font-family: var(--font-en);
  display: inline-block;
  transform: skewX(-10deg);
}

.name-orchestrator {
  font-style: normal;
  letter-spacing: .02em;
}

.nav {
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px clamp(12px, 3vw, 26px);
  padding-block: clamp(10px, 2vw, 15px);
  padding-inline: var(--pad-inline);
  background-color: rgba(8, 10, 15, .82);
  border-block-end: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(1.1);
}

@supports not (backdrop-filter: blur(1px)) {
  .nav {
    background-color: var(--bg);
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: clamp(15px, 2.8vw, 19px);
  font-weight: 400;
  letter-spacing: .03em;
  line-height: 1.2;
  text-decoration: none;
}

.mark {
  flex: none;
  display: block;
  inline-size: clamp(22px, 4.4vw, 27px);
}

.nav nav {
  order: 3;
  flex-basis: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px clamp(14px, 2.6vw, 28px);
  font-size: clamp(13px, 2.2vw, 14px);
}

.nav nav a {
  padding-block: .3em;
  color: var(--ink-dim);
  text-decoration: none;
  border-block-end: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.nav nav a:hover {
  color: var(--ink);
  border-block-end-color: var(--cyan);
}

.nav nav a[aria-current="page"] {
  color: var(--ink);
  border-block-end-color: var(--cyan);
}

.download-nav {
  color: var(--cyan);
}

.nav-cta {
  flex: none;
  padding: .5em 1.05em;
  color: var(--cyan);
  font-size: clamp(13px, 2.2vw, 14px);
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid rgba(0, 198, 255, .40);
  border-radius: 999px;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.nav-cta:hover {
  color: var(--ink);
  border-color: var(--cyan);
  background-color: rgba(0, 198, 255, .10);
}

.lang-select {
  flex: none;
  margin-inline-start: auto;
}

.lang-dropdown {
  position: relative;
}

.lang-code {
  letter-spacing: .04em;
  color: inherit;
}

.lang-name {
  margin-inline-start: .45em;
  font-family: var(--font-jp);
  font-size: .92em;
  font-weight: 400;
  color: inherit;
  transform: none;
}

.lang-dropdown-btn {
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  padding: .45em .55em;
  color: var(--ink);
  font-size: clamp(12px, 2.2vw, 13px);
  line-height: 1.2;
  white-space: nowrap;
  background: transparent;
  border: 0;
  border-block-end: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease);
}

.lang-dropdown-btn::after {
  content: "";
  display: inline-block;
  inline-size: .45em;
  block-size: .45em;
  margin-inline-start: .45em;
  border-inline-end: 1.5px solid currentColor;
  border-block-end: 1.5px solid currentColor;
  opacity: .55;
  transform: rotate(45deg) translateY(-.12em);
  transition: transform var(--ease), opacity var(--ease);
}

.lang-dropdown-btn:hover,
.lang-dropdown-btn:focus-visible {
  color: var(--cyan);
  outline: none;
}

.lang-dropdown-btn:hover .lang-name,
.lang-dropdown-btn:focus-visible .lang-name {
  color: inherit;
}

.lang-dropdown-btn[aria-expanded="true"] {
  color: var(--cyan);
  border-block-end-color: var(--cyan);
}

.lang-dropdown-btn[aria-expanded="true"]::after {
  transform: rotate(-135deg) translateY(.08em);
  opacity: .85;
}

.lang-dropdown-btn[aria-expanded="true"] .lang-name {
  color: inherit;
}

.lang-dropdown-menu {
  position: absolute;
  z-index: 30;
  inset-block-start: calc(100% + 10px);
  inset-inline-end: 0;
  margin: 0;
  padding: 6px 0;
  min-inline-size: 9.5rem;
  list-style: none;
  color: var(--ink);
  background-color: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  box-shadow: 0 10px 32px rgba(0, 0, 0, .18);
  backdrop-filter: blur(14px) saturate(1.1);
}

@supports not (backdrop-filter: blur(1px)) {
  .lang-dropdown-menu {
    background-color: var(--bg);
  }
}

.lang-dropdown-menu [role="option"] {
  display: flex;
  align-items: baseline;
  padding: .55em 1em;
  cursor: pointer;
  white-space: nowrap;
  border-inline-start: 2px solid transparent;
  transition: background-color var(--ease), border-color var(--ease);
}

.lang-dropdown-menu [role="option"]:hover {
  background-color: var(--surface-1);
}

.lang-dropdown-menu [role="option"][aria-selected="true"] {
  border-inline-start-color: var(--cyan);
  background-color: var(--surface-1);
}

.lang-dropdown-menu [role="option"][aria-selected="true"] .lang-name {
  color: var(--ink);
}

.visually-hidden {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

footer {
  display: grid;
  gap: 9px;
  padding-block: clamp(28px, 5vw, 44px);
  padding-inline: var(--pad-inline);
  color: var(--ink-dim);
  font-size: 13px;
  border-block-start: 1px solid var(--line);
}

footer .brand {
  color: var(--ink);
  font-size: clamp(15px, 2.8vw, 17px);
}

footer small {
  font-size: .95em;
}

@media (min-width: 44rem) {
  .nav nav {
    order: 0;
    flex-basis: auto;
  }

  footer {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    column-gap: clamp(16px, 3vw, 32px);
  }

  footer p {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav nav a,
  .nav-cta,
  .lang-dropdown-btn,
  .lang-dropdown-menu [role="option"] {
    transition: none;
  }
}