/*
Theme Name: fuku.tech
Theme URI: https://fuku.tech/
Author: FreeBSE
Description: fuku.tech のプログラム紹介と更新ログ用テーマ。
Version: 1.0.2
Text Domain: fuku-tech
*/

:root {
  --ink: #11191b;
  --muted: #5d6a6d;
  --line: #dce3e4;
  --paper: #ffffff;
  --wash: #f4f7f7;
  --teal: #005d59;
  --teal-dark: #004642;
  --blue: #1457d7;
  --content: 1180px;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

body.admin-bar .site-header {
  top: 32px;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--blue);
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

.skip-link {
  position: fixed;
  z-index: 10000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  color: #fff;
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 48px), var(--content));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-logo {
  color: var(--ink);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.8rem;
  font-size: 0.88rem;
  font-weight: 700;
}

.site-nav a {
  text-decoration: none;
}

.site-nav .support-link {
  padding: 0.65rem 1rem;
  border-radius: 4px;
  color: #fff;
  background: var(--teal);
}

.site-nav .support-link:hover {
  color: #fff;
  background: var(--teal-dark);
}

.hero {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  min-height: 600px;
  align-items: center;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  gap: 5vw;
  padding-block: 5.5rem;
}

.eyebrow,
.section-kicker,
.program-platform,
.program-status {
  margin: 0 0 1rem;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow span {
  display: inline-block;
  margin-top: 0.35rem;
  color: var(--ink);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: none;
}

.hero .eyebrow {
  text-transform: none;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 6.4vw, 6.8rem);
  font-weight: 600;
  letter-spacing: -0.06em;
  line-height: 1.13;
}

.hero-lead {
  max-width: 640px;
  margin: 2rem 0 0;
  color: #394649;
  font-size: clamp(1rem, 1.5vw, 1.28rem);
  line-height: 2;
}

.hero-philosophy {
  margin: 1.4rem 0 0;
  color: var(--teal);
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.8vw, 1.45rem);
  letter-spacing: 0.03em;
}

.hero-philosophy span {
  display: block;
  margin-top: 0.2rem;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.72em;
  letter-spacing: 0.04em;
}

.hero-actions,
.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.2rem;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--ink);
  border-radius: 4px;
  color: var(--ink);
  background: transparent;
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

.button::after {
  content: "→";
}

.button-primary {
  border-color: var(--teal);
  color: #fff;
  background: var(--teal);
}

.button:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.button-primary:hover {
  border-color: var(--teal-dark);
  color: #fff;
  background: var(--teal-dark);
}

.hero-visual {
  color: var(--teal);
}

.hero-visual .accent {
  fill: var(--blue);
}

.hero-visual .soft {
  fill: var(--wash);
}

.hero-visual .line {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.hero-visual .dash {
  stroke-dasharray: 7 8;
}

.section {
  padding-block: clamp(5rem, 9vw, 8.5rem);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3rem;
}

.section-heading h2,
.page-title,
.support-panel h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.3;
}

.text-link {
  color: var(--blue);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.text-link::after {
  content: " →";
}

.program-list {
  border-top: 1px solid var(--line);
}

.preparing-panel {
  max-width: 780px;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--line);
  background: var(--wash);
}

.preparing-panel h3 {
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 3.5vw, 3.3rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.3;
}

.preparing-panel > p:not([class]) {
  max-width: 620px;
  color: #344145;
}

.program-row {
  display: grid;
  min-height: 380px;
  align-items: center;
  grid-template-columns: 0.16fr 0.9fr 0.94fr;
  gap: 3rem;
  padding-block: 4rem;
  border-bottom: 1px solid var(--line);
}

.program-number {
  align-self: start;
  color: var(--teal);
  font-family: var(--serif);
  font-size: clamp(4rem, 7vw, 6.5rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 1;
}

.program-copy h3 {
  margin: 0.35rem 0 1rem;
  font-family: var(--serif);
  font-size: clamp(2.1rem, 3.4vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.program-summary {
  max-width: 34rem;
  margin: 0 0 1.2rem;
  color: #344145;
  font-size: 1.05rem;
}

.program-platform {
  margin-bottom: 1.4rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: none;
}

.program-visual {
  color: var(--teal);
}

.program-visual svg {
  width: 100%;
  max-height: 280px;
}

.program-visual .frame,
.program-visual .detail {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.program-visual .muted-fill {
  fill: #eef2f2;
}

.program-visual .blue-fill {
  fill: var(--blue);
}

.program-row:nth-child(even) .program-number {
  grid-column: 3;
}

.program-row:nth-child(even) .program-copy {
  grid-column: 2;
  grid-row: 1;
}

.program-row:nth-child(even) .program-visual {
  grid-column: 1;
  grid-row: 1;
}

.updates-section {
  background: var(--wash);
}

.update-list {
  border-top: 1px solid #cdd6d7;
}

.update-item {
  display: grid;
  align-items: start;
  grid-template-columns: 150px 1fr auto;
  gap: 2rem;
  padding-block: 1.6rem;
  border-bottom: 1px solid #cdd6d7;
}

.update-date {
  color: var(--muted);
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
}

.update-title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 750;
}

.update-title a {
  text-decoration: none;
}

.update-arrow {
  color: var(--blue);
  font-size: 1.35rem;
}

.support-section {
  padding-block: clamp(5rem, 9vw, 8rem);
}

.support-panel {
  display: grid;
  align-items: center;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  padding: clamp(2rem, 6vw, 5rem);
  color: #fff;
  background: var(--teal);
}

.support-panel p {
  max-width: 42rem;
  margin: 1rem 0 0;
  color: #dceceb;
}

.support-panel .button {
  border-color: #fff;
  color: var(--teal);
  background: #fff;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 3rem;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
}

.footer-copy {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.7rem 1.4rem;
  font-size: 0.82rem;
}

.page-hero {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
  border-bottom: 1px solid var(--line);
}

.page-hero .page-lead {
  max-width: 760px;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.page-content {
  width: min(calc(100% - 48px), 820px);
  margin-inline: auto;
  padding-block: clamp(4rem, 8vw, 7rem);
}

.page-content > *:first-child {
  margin-top: 0;
}

.page-content h2,
.page-content h3 {
  margin-top: 2.6em;
  font-family: var(--serif);
  line-height: 1.4;
}

.page-content a {
  color: var(--blue);
}

.program-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: 5rem;
}

.feature-list {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 1rem 0 1rem 1.8rem;
  border-top: 1px solid var(--line);
}

.feature-list li::before {
  position: absolute;
  top: 1.55rem;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.status-card {
  align-self: start;
  padding: 1.8rem;
  background: var(--wash);
}

.status-card dl {
  margin: 0;
}

.status-card dt {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.status-card dt:first-child {
  margin-top: 0;
}

.status-card dd {
  margin: 0.25rem 0 0;
  font-weight: 750;
}

.post-list article {
  padding-block: 2.3rem;
  border-top: 1px solid var(--line);
}

.post-list article:last-child {
  border-bottom: 1px solid var(--line);
}

.post-list h2 {
  margin: 0.4rem 0 0.7rem;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.4;
}

.post-list h2 a {
  text-decoration: none;
}

.post-meta {
  color: var(--muted);
  font-size: 0.82rem;
}

.post-excerpt {
  max-width: 680px;
  color: #435054;
}

.pagination {
  margin-top: 3rem;
}

.pagination .nav-links {
  display: flex;
  gap: 0.5rem;
}

.pagination .page-numbers {
  min-width: 40px;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  text-align: center;
  text-decoration: none;
}

.pagination .current {
  color: #fff;
  border-color: var(--teal);
  background: var(--teal);
}

@media (max-width: 900px) {
  body.admin-bar .site-header {
    top: 46px;
  }

  .header-inner {
    min-height: 68px;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.4rem;
    padding-block: 0.8rem;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
    gap: 0.5rem 1.1rem;
    overflow-x: auto;
    padding-bottom: 0.15rem;
    white-space: nowrap;
  }

  .site-nav .support-link {
    margin-left: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-visual {
    max-width: 620px;
  }

  .program-row,
  .program-row:nth-child(even) {
    grid-template-columns: 80px 1fr;
    gap: 1.5rem;
  }

  .program-row .program-number,
  .program-row:nth-child(even) .program-number {
    grid-column: 1;
    grid-row: 1;
  }

  .program-row .program-copy,
  .program-row:nth-child(even) .program-copy {
    grid-column: 2;
    grid-row: 1;
  }

  .program-row .program-visual,
  .program-row:nth-child(even) .program-visual {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .program-detail-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 620px) {
  .shell,
  .page-content {
    width: min(calc(100% - 32px), var(--content));
  }

  .site-nav {
    font-size: 0.78rem;
  }

  .site-nav .about-nav {
    display: none;
  }

  .hero-inner {
    min-height: auto;
    padding-block: 4rem;
  }

  .hero h1 {
    font-size: clamp(3rem, 16vw, 4.8rem);
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 2rem;
  }

  .program-row,
  .program-row:nth-child(even) {
    grid-template-columns: 1fr;
    padding-block: 3rem;
  }

  .program-row .program-number,
  .program-row:nth-child(even) .program-number,
  .program-row .program-copy,
  .program-row:nth-child(even) .program-copy,
  .program-row .program-visual,
  .program-row:nth-child(even) .program-visual {
    grid-column: 1;
    grid-row: auto;
  }

  .program-number {
    font-size: 4.2rem;
  }

  .update-item {
    grid-template-columns: 1fr auto;
    gap: 0.4rem 1rem;
  }

  .update-date {
    grid-column: 1 / -1;
  }

  .support-panel {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}