/*
 * MAC FLEET public shell.
 *
 * Priorities, in order: information structure, the security boundary, mobile
 * usability, then appearance. System fonts only (no web font requests), no
 * animation, no external resources.
 */

:root {
  --ink: #171310;
  --ink-soft: #241d16;
  --paper: #f4eedf;
  --muted: #b9ad93;
  --line: #3a3027;
  --accent: #c4f000;
  --focus: #c4f000;
  --radius: 0;
  --max: 64rem;
  font-family:
    system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    "Yu Gothic", sans-serif;
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-size: 1rem;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

a {
  color: var(--paper);
  text-decoration-color: var(--accent);
  text-underline-offset: 0.2em;
}

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

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--accent);
  color: var(--ink);
  padding: 0.5rem 1rem;
}

/* header */

.site-header {
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0 1.5rem;
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}

.wordmark {
  display: inline-block;
  padding: 0.625rem 0;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9375rem;
}

.nav a {
  text-decoration: none;
  display: inline-block;
  padding: 0.625rem 0;
}

.nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}

/* hero */

.hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--line);
}

.hero__title {
  margin: 0;
  font-size: clamp(2.5rem, 12vw, 5.5rem);
  line-height: 1;
  letter-spacing: 0.08em;
  font-weight: 900;
}

.hero__lead {
  margin: 1.25rem 0 0;
  font-size: clamp(1.25rem, 4.5vw, 1.75rem);
  line-height: 1.6;
  font-weight: 700;
}

.site-notice {
  display: inline-block;
  margin: 1.75rem 0 0;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--accent);
  color: var(--paper);
  font-size: 0.875rem;
  line-height: 1.6;
}

.hero__more {
  margin: 1.25rem 0 0;
}

.hero__more a {
  display: inline-block;
  padding: 0.375rem 0;
  color: var(--accent);
  font-weight: 700;
}

/* entries */

.entries {
  padding: 3rem 0 4rem;
}

.section-heading {
  margin: 0 0 1.25rem;
  font-size: 1.375rem;
}

.entry-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.entry {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 5.5rem;
  padding: 1rem 1.125rem;
  border: 1px solid var(--line);
  background: var(--ink-soft);
}

.entry__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.75rem;
  margin: 0;
}

.entry__label {
  font-size: 1.25rem;
  font-weight: 800;
}

.entry__summary {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.entry__note {
  margin: 0;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.entry__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1rem;
  margin: auto 0 0;
  padding: 0;
  list-style: none;
}

.entry__link {
  display: inline-block;
  padding: 0.375rem 0;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 700;
}

.legend-line {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.7;
}

/* status labels: one vocabulary (公開中 / 準備中 / 構想中) */

.badge {
  display: inline-block;
  padding: 0.0625rem 0.5rem;
  border: 1px solid var(--muted);
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0;
  white-space: nowrap;
}

.badge--public {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}

.badge--concept {
  border-style: dashed;
}

/* prose pages */

.prose {
  padding-top: 3rem;
  padding-bottom: 4rem;
  max-width: 44rem;
}

.page-title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.75rem, 7vw, 2.5rem);
  line-height: 1.3;
}

.prose p {
  margin: 0 0 1rem;
}

.page-header {
  margin: 0 0 1.5rem;
}

.page-header .page-title {
  margin-bottom: 0.5rem;
}

.prose .page-eyebrow {
  margin: 0 0 0.25rem;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page .page-status,
.prose .page-status {
  margin: 0;
}

.explainer__section {
  margin-top: 2.5rem;
}

.section-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.75rem;
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  line-height: 1.5;
}

.list {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.list li {
  margin: 0 0 0.375rem;
}

.list--steps strong {
  display: block;
}

.list .term {
  margin-bottom: 1rem;
}

.prose .term__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.75rem;
  margin: 0;
}

.prose .term__text {
  margin: 0;
}

.status-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.75rem;
}

.legend {
  margin: 0 0 1rem;
}

.legend__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.75rem;
  margin: 0 0 0.5rem;
}

.legend dt,
.legend dd {
  margin: 0;
}

.prose .more-link {
  margin: 1rem 0;
}

.more-link a {
  color: var(--accent);
  font-weight: 700;
}

.notice {
  margin-top: 2.5rem;
  padding: 1.25rem 1.25rem 0.5rem;
  border: 1px solid var(--accent);
  background: var(--ink-soft);
}

.notice__title {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  color: var(--accent);
}

.notice__list {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

/* footer */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  font-size: 0.8125rem;
}

.site-footer p {
  margin: 0;
}

.site-footer__name {
  color: var(--paper);
  font-weight: 800;
  letter-spacing: 0.18em;
  margin-bottom: 0.25rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }

  .hero {
    padding: 6rem 0 4rem;
  }

  .entry-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .entry-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .entry {
    min-height: 12rem;
  }
}

/* projects */

.page {
  padding-top: 3rem;
  padding-bottom: 4rem;
}

.page-lead {
  margin: 0 0 1.5rem;
}

.demo-notice {
  margin: 0 0 2rem;
  padding: 0.875rem 1.125rem;
  border: 2px dashed var(--accent);
  background: var(--ink-soft);
}

.demo-notice p {
  margin: 0;
}

.demo-notice__label {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.project-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.project {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--ink-soft);
  padding: 1.125rem 1.25rem 1.25rem;
}

.project__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.625rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.8125rem;
}

.badge--demo {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}

.project__title {
  margin: 0.5rem 0 0.5rem;
  font-size: 1.125rem;
  line-height: 1.5;
}

.project__description {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin: 0 0 0.75rem;
  padding: 0;
  list-style: none;
}

.tag {
  max-width: 100%;
  padding: 0 0.5rem;
  border: 1px solid var(--line);
  font-size: 0.8125rem;
  line-height: 1.8;
}

.project__date,
.project__preview {
  margin: 0;
  color: var(--muted);
  font-size: 0.8125rem;
}

@media (min-width: 768px) {
  .project-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .project-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* project detail */

.project__title a {
  text-decoration-color: var(--accent);
}

.project-detail .page-eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.625rem;
  margin: 0 0 0.25rem;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.project-detail .page-status {
  margin: 0;
}

.project-detail__description {
  max-width: 44rem;
  margin: 0 0 1.5rem;
}

.project-visual {
  margin: 0 0 1.5rem;
}

.project-visual img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.facts {
  display: grid;
  gap: 0.75rem;
  max-width: 44rem;
  margin: 0;
}

.facts__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.facts dt {
  color: var(--muted);
  font-size: 0.8125rem;
}

.facts dd {
  margin: 0;
}

.facts .tags {
  margin: 0;
}

@media (min-width: 768px) {
  .facts__row {
    grid-template-columns: 11rem minmax(0, 1fr);
    align-items: baseline;
  }
}

/* download */

.prose .download {
  margin: 1.5rem 0 0.5rem;
}

.download__link {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.download__link:hover {
  background: var(--ink);
  color: var(--accent);
}

.prose .download__note {
  color: var(--muted);
  font-size: 0.8125rem;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.875rem;
}

.command {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  background: var(--ink-soft);
  overflow-x: auto;
}