/* ============================================================
   電芸社 Official Site — Global Stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500&family=Noto+Serif+JP:wght@300;400;600&display=swap');

/* ========================
   Variables
   ======================== */
:root {
  --black:      #0a0a0a;
  --ink:        #1a1a1a;
  --mid:        #4a4a4a;
  --grey:       #7a7a7a;
  --light-grey: #b8b8b8;
  --border:     #e0e0e0;
  --bg:         #f7f7f5;
  --white:      #ffffff;

  --serif: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', '游明朝', Georgia, serif;
  --sans:  'Noto Sans JP', 'Yu Gothic', 'YuGothic', '游ゴシック', 'Helvetica Neue', Arial, sans-serif;

  --max-w:    1080px;
  --gutter:   40px;
  --nav-h:    68px;
  --ease:     0.25s ease;
}

/* ========================
   Reset
   ======================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  font-size: 1.5rem;
  line-height: 1.85;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ========================
   Layout Utilities
   ======================== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: 100px 0;
}

.section--bg {
  background: var(--bg);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.divider {
  width: 40px;
  height: 1px;
  background: var(--black);
  margin: 32px 0;
}

/* ========================
   Typography
   ======================== */
.section-label {
  font-size: 1.05rem;
  letter-spacing: 0.28em;
  color: var(--grey);
  text-transform: uppercase;
  font-weight: 400;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--serif);
  font-size: 3.2rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--black);
  margin-bottom: 48px;
}

.lead {
  font-size: 1.65rem;
  line-height: 2;
  color: var(--mid);
}

/* ========================
   Buttons
   ======================== */
.btn {
  display: inline-block;
  padding: 13px 30px;
  font-size: 1.3rem;
  letter-spacing: 0.07em;
  font-family: var(--sans);
  font-weight: 400;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

.btn--primary:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.btn--outline {
  background: transparent;
  color: var(--black);
  border-color: var(--black);
}

.btn--outline:hover {
  background: var(--black);
  color: var(--white);
}

/* ========================
   Navigation
   ======================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  line-height: 1;
}

.nav-logo__img {
  height: 36px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  color: var(--mid);
  transition: color var(--ease);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--black);
}

.nav-links a.nav-cta {
  padding: 8px 20px;
  border: 1px solid var(--black);
  color: var(--black);
  font-size: 1.2rem;
  letter-spacing: 0.07em;
  transition: background var(--ease), color var(--ease);
}

.nav-links a.nav-cta:hover {
  background: var(--black);
  color: var(--white);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
  line-height: 0;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--black);
  transition: transform var(--ease), opacity var(--ease);
}

/* ========================
   Page Body (nav offset)
   ======================== */
.page {
  padding-top: var(--nav-h);
}

/* ========================
   Page Header (inner pages)
   ======================== */
.page-header {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--border);
}

.page-header__label {
  font-size: 1.05rem;
  letter-spacing: 0.3em;
  color: var(--grey);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 300;
}

.page-header__title {
  font-family: var(--serif);
  font-size: clamp(3.2rem, 4.5vw, 5rem);
  font-weight: 600;
  color: var(--black);
  line-height: 1.2;
  margin-bottom: 24px;
}

.page-header__lead {
  font-size: 1.65rem;
  line-height: 2;
  color: var(--mid);
}

/* ========================
   Hero (TOP) — Split Layout
   ======================== */
.hero {
  padding: 0;
}

/* 左右分割グリッド */
.hero-split {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 0;
  min-height: calc(100vh - var(--nav-h));
  align-items: stretch;
}

.hero-split__left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px var(--gutter) 80px 0;
}

.hero-split__right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 0 80px var(--gutter);
  border-left: 1px solid var(--border);
}

/* Hero左パネル — テキスト */
.hero__label {
  font-size: 1.05rem;
  letter-spacing: 0.3em;
  color: var(--grey);
  font-weight: 300;
  margin-bottom: 36px;
}

.hero__title {
  font-family: var(--serif);
  font-size: clamp(3rem, 4.5vw, 5.6rem);
  font-weight: 600;
  line-height: 1.45;
  color: var(--black);
  margin-bottom: 40px;
  letter-spacing: 0.04em;
}

.hero__body {
  font-size: 1.6rem;
  line-height: 2;
  color: var(--mid);
  margin-bottom: 48px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========================
   Media Cards (projects)
   ======================== */
.media-card {
  padding: 60px 48px;
  background: var(--black);
  color: var(--white);
  min-height: 340px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: background var(--ease);
}

.media-card:hover {
  background: #222;
}

.media-card--light {
  background: var(--bg);
  color: var(--black);
}

.media-card--light:hover {
  background: #ededeb;
}

.media-card__tag {
  font-size: 0.95rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  opacity: 0.45;
  margin-bottom: 20px;
}

.media-card__title {
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  line-height: 1.2;
}

.media-card__body {
  font-size: 1.4rem;
  line-height: 1.85;
  opacity: 0.7;
  max-width: 400px;
  margin-bottom: 36px;
}

.media-card__link {
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.6;
  transition: opacity var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.media-card__link::after {
  content: '→';
}

.media-card:hover .media-card__link {
  opacity: 1;
}

/* ========================
   Hero Right — News Panel
   ======================== */
.hero-news-label {
  font-size: 1.0rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--grey);
  font-weight: 400;
  margin-bottom: 24px;
}

.hero-news-list {
  flex: 1;
}

.hero-news-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.hero-news-item:first-child {
  border-top: 1px solid var(--border);
}

.hero-news-item__date {
  display: block;
  font-size: 1.15rem;
  color: var(--light-grey);
  letter-spacing: 0.07em;
  font-weight: 300;
  margin-bottom: 5px;
}

.hero-news-item__title {
  font-size: 1.35rem;
  color: var(--mid);
  line-height: 1.65;
  transition: color var(--ease);
}

.hero-news-item a:hover .hero-news-item__title {
  color: var(--black);
}

.hero-news-more {
  display: inline-block;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  color: var(--grey);
  margin-top: 24px;
  transition: color var(--ease);
}

.hero-news-more::after {
  content: ' →';
}

.hero-news-more:hover {
  color: var(--black);
}

/* ========================
   CTA Section
   ======================== */
.cta-section {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 48px;
}

/* ========================
   News List
   ======================== */
.news-list {
  margin-top: 48px;
}

.news-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}

.news-item:first-child {
  border-top: 1px solid var(--border);
}

.news-item__date {
  font-size: 1.25rem;
  color: var(--grey);
  letter-spacing: 0.08em;
  font-weight: 300;
  white-space: nowrap;
}

.news-item__tag {
  display: inline-block;
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  padding: 3px 10px;
  border: 1px solid var(--border);
  color: var(--grey);
  margin-right: 12px;
  vertical-align: middle;
}

.news-item__title {
  font-size: 1.45rem;
  color: var(--ink);
  transition: color var(--ease);
}

.news-item a:hover .news-item__title {
  color: var(--black);
}

/* ========================
   Info Blocks
   ======================== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: 48px;
}

.info-block {
  padding: 48px;
  background: var(--bg);
}

.info-block--white {
  background: var(--white);
  border: 1px solid var(--border);
}

.info-block__label {
  font-size: 1.0rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 20px;
  font-weight: 400;
}

.info-block__title {
  font-family: var(--serif);
  font-size: 2.2rem;
  color: var(--black);
  margin-bottom: 20px;
  font-weight: 600;
}

.info-block__body {
  font-size: 1.45rem;
  line-height: 2;
  color: var(--mid);
}

/* ========================
   Values / About
   ======================== */
.values-list {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.value-item {
  padding-left: 24px;
  border-left: 2px solid var(--black);
}

.value-item__number {
  font-size: 1.05rem;
  letter-spacing: 0.15em;
  color: var(--light-grey);
  margin-bottom: 8px;
}

.value-item__title {
  font-family: var(--serif);
  font-size: 1.9rem;
  color: var(--black);
  margin-bottom: 10px;
}

.value-item__body {
  font-size: 1.4rem;
  line-height: 1.9;
  color: var(--mid);
}

.about-text h3 {
  font-family: var(--serif);
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--black);
  font-weight: 600;
}

.about-text p {
  font-size: 1.5rem;
  line-height: 2;
  color: var(--mid);
  margin-bottom: 20px;
}

/* ========================
   Contribute: Fee
   ======================== */
.fee-display {
  margin: 24px 0 12px;
}

.fee-number {
  font-family: var(--serif);
  font-size: 4.8rem;
  color: var(--black);
  line-height: 1;
  font-weight: 600;
}

.fee-note {
  font-size: 1.25rem;
  color: var(--grey);
  margin-top: 8px;
}

/* ========================
   Contribute: Flow
   ======================== */
.flow-list {
  margin-top: 48px;
}

.flow-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

.flow-item:first-child {
  border-top: 1px solid var(--border);
}

.flow-item__num {
  font-family: var(--serif);
  font-size: 3.8rem;
  color: var(--light-grey);
  line-height: 1;
  font-weight: 600;
}

.flow-item__content h4 {
  font-family: var(--serif);
  font-size: 1.9rem;
  color: var(--black);
  margin-bottom: 12px;
  padding-top: 4px;
}

.flow-item__content p {
  font-size: 1.4rem;
  line-height: 1.9;
  color: var(--mid);
}

/* ========================
   Gamejam Box
   ======================== */
.gamejam-box {
  border: 1px solid var(--border);
  padding: 48px;
  margin-top: 48px;
}

.gamejam-box__title {
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--black);
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.gamejam-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.gamejam-spec__label {
  font-size: 1.05rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 8px;
}

.gamejam-spec__value {
  font-size: 1.5rem;
  color: var(--ink);
  line-height: 1.7;
}

/* ========================
   Policy Page
   ======================== */
.policy-block {
  margin-bottom: 72px;
}

.policy-block h3 {
  font-family: var(--serif);
  font-size: 2.1rem;
  color: var(--black);
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.policy-block p,
.policy-block li {
  font-size: 1.5rem;
  line-height: 2;
  color: var(--mid);
  margin-bottom: 16px;
}

.policy-block ul {
  margin-top: 4px;
}

.policy-block li {
  padding-left: 20px;
  position: relative;
  margin-bottom: 10px;
}

.policy-block li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--light-grey);
}

.policy-note {
  font-size: 1.3rem;
  color: var(--grey);
  padding: 24px 32px;
  border-left: 2px solid var(--border);
  margin-top: 24px;
  line-height: 1.9;
}

/* ========================
   Contact — Google Forms CTA
   ======================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.gform-cta {
  padding: 48px;
  border: 1px solid var(--border);
}

.gform-cta__body {
  font-size: 1.55rem;
  line-height: 2;
  color: var(--mid);
  margin-bottom: 36px;
}

.gform-cta__btn {
  display: inline-block;
}

.gform-cta__note {
  margin-top: 16px;
  font-size: 1.2rem;
  color: var(--light-grey);
  letter-spacing: 0.02em;
}

.contact-info h3 {
  font-family: var(--serif);
  font-size: 1.9rem;
  color: var(--black);
  margin-bottom: 20px;
}

.contact-info p {
  font-size: 1.45rem;
  line-height: 2;
  color: var(--mid);
  margin-bottom: 24px;
}

/* ========================
   Legal Pages (privacy / terms)
   ======================== */
.legal-content {
  max-width: 720px;
}

.legal-section {
  margin-bottom: 56px;
}

.legal-section h3 {
  font-family: var(--serif);
  font-size: 1.85rem;
  color: var(--black);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.legal-section p,
.legal-section li {
  font-size: 1.45rem;
  line-height: 2;
  color: var(--mid);
  margin-bottom: 12px;
}

.legal-section li {
  padding-left: 20px;
  position: relative;
}

.legal-section li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--light-grey);
}

.legal-updated {
  font-size: 1.25rem;
  color: var(--grey);
  margin-bottom: 48px;
}

/* ========================
   Footer
   ======================== */
.footer {
  background: var(--black);
  color: rgba(255, 255, 255, 0.6);
  padding: 80px 0 52px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 72px;
  padding-bottom: 72px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand__logo-img {
  height: 40px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  opacity: 0.85;
  margin-bottom: 28px;
}

.footer-brand__desc {
  font-size: 1.35rem;
  line-height: 2;
  color: rgba(255, 255, 255, 0.45);
}

.footer-nav h4 {
  font-size: 1.0rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  margin-bottom: 20px;
  font-weight: 400;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-nav a {
  font-size: 1.35rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--ease);
  line-height: 1;
}

.footer-nav a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-legal {
  display: flex;
  gap: 28px;
}

.footer-legal a {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.35);
  transition: color var(--ease);
}

.footer-legal a:hover {
  color: rgba(255, 255, 255, 0.65);
}

.footer-copy {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.25);
}

/* ========================
   Page Visual Image
   ======================== */
.page-visual {
  overflow: hidden;
  line-height: 0;
}

.page-visual__img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  display: block;
}

/* ========================
   Projects Row (ガメつく + image)
   ======================== */
.projects-row {
  display: flex;
  gap: 0;
  align-items: stretch;
  margin-top: 48px;
}

.projects-row .media-card {
  flex: 1;
}

.projects-row__img {
  width: 360px;
  flex-shrink: 0;
  object-fit: cover;
  display: block;
}

/* ========================
   Responsive
   ======================== */
@media (max-width: 900px) {
  :root {
    --gutter: 28px;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 36px var(--gutter);
    gap: 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
    align-items: flex-start;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1.7rem;
  }

  .nav-links a.nav-cta {
    padding: 10px 24px;
    font-size: 1.5rem;
  }

  .nav-hamburger {
    display: flex;
  }

  .section {
    padding: 72px 0;
  }

  /* Hero split → 縦並び（左が上、右が下） */
  .hero-split {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-split__left {
    padding: 64px 0 48px;
  }

  .hero-split__right {
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 48px 0 64px;
  }

  .hero__title {
    font-size: 3.6rem;
  }

  .media-grid,
  .info-grid,
  .two-col {
    grid-template-columns: 1fr;
  }

  .media-card {
    min-height: 260px;
    padding: 40px 32px;
  }

  .gamejam-specs {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page-header {
    padding: 56px 0 48px;
    margin-bottom: 56px;
  }

  .page-visual__img {
    height: 280px;
  }

  .projects-row {
    flex-direction: column;
  }

  .projects-row__img {
    width: 100%;
    height: 240px;
  }

  .flow-item {
    grid-template-columns: 56px 1fr;
    gap: 24px;
  }
}

@media (max-width: 560px) {
  :root {
    --gutter: 20px;
  }

  .page-visual__img {
    height: 200px;
  }

  .hero__title {
    font-size: 2.8rem;
  }

  .section-title {
    font-size: 2.6rem;
  }

  .page-header__title {
    font-size: 3rem;
  }

  .media-card {
    padding: 36px 24px;
  }

  .info-block,
  .gamejam-box {
    padding: 36px 24px;
  }

  .two-col {
    gap: 48px;
  }
}