/* ================================================================
 *  EdenCode — home.css
 *  トップページ (index.html) 専用スタイル
 *  ベースは site-common.css に依存 (:root / リセット / a11y)
 * ================================================================ */

/* index.html 独自のトーン微調整 */
body { font-weight: 400; }

/* ===========================
   ナビ（固定）
=========================== */
nav {
  position: fixed;
  top: 0; width: 100%;
  z-index: 100;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.4s, border-bottom 0.4s;
}

nav.scrolled {
  background: rgba(10,14,20,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  color: #fff;
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.4s;
}

nav.scrolled .nav-logo { opacity: 1; }

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s;
}

.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }

/* ===========================
   Hero（全画面）
=========================== */
.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

/* 背景動画 */
.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100vw;
  height: 100vh;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: center center;
  z-index: 0;
  pointer-events: none;
}

/* グリッドオーバーレイ（body全体に適用。hero は下部グラデだけで足りる） */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,170,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,170,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Hero下部グラデーション */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 50%,
    rgba(10,14,20,0.8) 85%,
    var(--bg) 100%
  );
  z-index: 3;
  pointer-events: none;
}

/* Three.js ヒーローキャンバス */
#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

/* ロゴ中央 */
.hero-center {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.logo-main {
  font-family: var(--mono);
  font-size: clamp(2.8rem, 9vw, 7rem);
  font-weight: 700;
  letter-spacing: 0.25em;
  color: #fff;
  text-shadow:
    0 0 40px rgba(0,212,170,0.35),
    0 0 80px rgba(0,212,170,0.12);
  animation: fadeUp 1.4s ease both;
}

.logo-sub {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.35em;
  color: var(--text-dim);
  text-transform: uppercase;
  animation: fadeUp 1.4s ease 0.3s both;
}

/* スクロールヒント */
.scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: fadeUp 1.4s ease 0.8s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* スライドインジケーター */
.indicators {
  position: absolute;
  right: 36px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: fadeUp 1.4s ease 1s both;
}

.dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-dim);
  cursor: pointer;
  transition: all 0.3s;
}

.dot.active {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  height: 20px;
  border-radius: 2px;
}

/* ===========================
   Blog セクション
=========================== */
.blog-section {
  padding: 100px 40px 80px;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 36px;
  border-left: 3px solid var(--accent);
  padding-left: 20px;
}

/* カテゴリタブ */
.category-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.tab {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: transparent;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.tab:hover { border-color: var(--accent); color: var(--accent); }
.tab.active {
  background: rgba(0,212,170,0.1);
  border-color: var(--accent);
  color: var(--accent);
}

/* カードグリッド */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s, transform 0.25s ease, box-shadow 0.25s;
}

.blog-card:hover {
  border-color: var(--accent);
  transform: scale(1.03);
  box-shadow: 0 8px 32px rgba(0,212,170,0.25);
}

.card-thumb {
  width: 100%;
  aspect-ratio: 16 / 7;
  background: #0a0e14;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.card-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-thumb-placeholder { font-size: 3rem; opacity: 0.35; }

.card-cat-badge {
  position: absolute;
  top: 12px; left: 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 2px;
}

.badge-uefn { background: rgba(10,14,20,0.55); border: 1px solid rgba(163,230,53,0.8);  color: #a3e635; backdrop-filter: blur(6px); }
.badge-lab  { background: rgba(10,14,20,0.55); border: 1px solid rgba(179,157,255,0.8); color: #b39dff; backdrop-filter: blur(6px); }
.badge-log  { background: rgba(10,14,20,0.55); border: 1px solid rgba(255,107,53,0.8);  color: #ff6b35; backdrop-filter: blur(6px); }

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-date {
  font-family: var(--mono);
  font-size: 11px;
  color: #7a8fa0;
  letter-spacing: 1px;
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
}

.card-excerpt {
  font-size: 13px;
  color: #9aaabb;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer-link {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1px;
}

.blog-card.hidden { display: none; }

/* ページネーションボタン */
.pagination {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 48px;
}

.btn-page {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 10px 28px;
  border-radius: 4px;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 0 10px rgba(0,212,170,0.35);
  position: relative;
}

.btn-page:hover {
  background: rgba(0,212,170,0.1);
  box-shadow: 0 0 22px rgba(0,212,170,0.65);
}

.btn-page.primary {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-page.primary:hover { background: rgba(0,212,170,0.1); }

.btn-page[disabled] {
  border-color: var(--text-dim);
  color: var(--text-dim);
  box-shadow: none;
  opacity: 0.4;
  pointer-events: none;
  cursor: default;
}

/* ===========================
   Contact セクション
=========================== */
.contact-section {
  padding: 80px 40px 100px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.contact-text {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  line-height: 2;
}

.contact-mail {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.1em;
  transition: opacity 0.2s;
}

.contact-mail:hover { opacity: 0.7; }

.sns-block { margin-top: 48px; }

.sns-block-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.sns-block-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.sns-block-link {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 20px;
  border-radius: 2px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  text-decoration: none;
  transition: all 0.2s;
}

.sns-block-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===========================
   フッター
=========================== */
footer {
  padding: 24px 40px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

/* ===========================
   アニメーション / インタラクション
=========================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* クリック波紋 */
.ripple {
  position: absolute;
  display: block;
  border-radius: 50%;
  background: rgba(0, 212, 170, 0.5);
  pointer-events: none;
  transform-origin: center;
  animation: rippleAnim 0.6s ease-out forwards;
}

@keyframes rippleAnim {
  from { transform: scale(0); opacity: 0.7; }
  to   { transform: scale(1.5); opacity: 0;   }
}

/* ===========================
   レスポンシブ
=========================== */
@media (max-width: 768px) {
  nav { padding: 16px 20px; }
  .nav-links { gap: 20px; }
  .blog-section { padding: 80px 20px 60px; }
  .contact-section { padding: 60px 20px 80px; }
  .card-grid { grid-template-columns: 1fr; }
  .indicators { right: 16px; }
  footer { padding: 20px; flex-direction: column; gap: 8px; }
}