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

:root {
  --bg-primary: #050505;
  --bg-secondary: #0a0a0a;
  --bg-card: #0d0d0d;
  --green: #00ff88;
  --cyan: #00ffff;
  --text-primary: #e2e8f0;
  --text-muted: #a0aec0;
  --border: rgba(0, 255, 136, 0.2);
  --border-hover: rgba(0, 255, 136, 0.6);
  --glow-green: 0 0 10px rgba(0, 255, 136, 0.4), 0 0 30px rgba(0, 255, 136, 0.1);
  --glow-cyan: 0 0 10px rgba(0, 255, 255, 0.4), 0 0 30px rgba(0, 255, 255, 0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* スキャンライン効果 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ======== NAV ======== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 5, 5, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--green);
  text-shadow: var(--glow-green);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.nav-logo:hover {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  transition: all 0.2s;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: color 0.2s, text-shadow 0.2s;
  cursor: pointer;
}

.nav-links a:hover {
  color: var(--green);
  text-shadow: var(--glow-green);
}

/* ======== HERO ======== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 2rem 4rem;
  background: radial-gradient(ellipse at 20% 50%, rgba(0, 255, 136, 0.04) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(0, 255, 255, 0.03) 0%, transparent 50%),
              var(--bg-primary);
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--green);
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 0.2s;
}

.hero-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(5rem, 18vw, 14rem);
  font-weight: 800;
  line-height: 0.88;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 0.4s;
}

.hero-title .line1 {
  display: block;
  color: var(--text-primary);
}

.hero-title .line2 {
  display: block;
  color: var(--green);
  text-shadow: 0 0 60px rgba(0, 255, 136, 0.3);
}

.hero-subtitle-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  min-height: 2rem;
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 0.8s;
}

.hero-prompt {
  color: var(--green);
  font-size: 1rem;
  flex-shrink: 0;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 400;
}

.hero-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--green);
  vertical-align: middle;
  animation: blink 1s step-end infinite;
  flex-shrink: 0;
}

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

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 1.2s;
}

.stat-pill {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.4rem 1rem;
  font-size: 0.78rem;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.05em;
  transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.stat-pill:hover {
  border-color: var(--green);
  color: var(--green);
  box-shadow: var(--glow-green);
}

.stat-pill .pill-label {
  color: var(--cyan);
  margin-right: 0.4em;
}

/* ======== SECTION COMMON ======== */
section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 3rem;
}

.section-cmd {
  font-size: 0.8rem;
  color: var(--green);
  margin-bottom: 0.5rem;
  letter-spacing: 0.1em;
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.section-title span {
  color: var(--green);
}

/* ======== PRODUCTS ======== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.group-label {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
  font-size: 0.72rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}
.group-label:first-child { margin-top: 0; }
.group-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* カード */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  position: relative;
  cursor: pointer;
  transition: border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}

/* 角の装飾 */
.card::before,
.card::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
}
.card::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--green);
  border-left: 2px solid var(--green);
}
.card::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--green);
  border-right: 2px solid var(--green);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.08), 0 0 40px rgba(0, 255, 136, 0.04);
}

/* リリース済みカード */
.card.released {
  border-color: rgba(0, 255, 136, 0.45);
  background: linear-gradient(160deg, rgba(0, 255, 136, 0.05) 0%, var(--bg-card) 55%);
}
.card.released::before,
.card.released::after {
  width: 14px;
  height: 14px;
}
.card.released:hover {
  border-color: rgba(0, 255, 136, 0.75);
  box-shadow: 0 0 24px rgba(0, 255, 136, 0.14), 0 0 48px rgba(0, 255, 136, 0.06);
}

/* Personal Use カード */
.card.personal {
  border-color: rgba(0, 255, 136, 0.08);
  opacity: 0.5;
}
.card.personal::before,
.card.personal::after {
  border-color: rgba(0, 255, 136, 0.2);
}
.card.personal:hover {
  opacity: 0.7;
  border-color: rgba(0, 255, 136, 0.2);
  box-shadow: none;
}

/* グリッチエフェクト */
.card:hover .card-title {
  animation: glitch 0.3s ease-in-out;
}

@keyframes glitch {
  0%   { transform: none; }
  20%  { transform: skewX(-1.5deg) translateX(1px); color: var(--cyan); }
  40%  { transform: skewX(1deg) translateX(-1px); color: var(--green); }
  60%  { transform: skewX(-0.5deg) translateX(0.5px); }
  80%  { transform: skewX(0.5deg); }
  100% { transform: none; }
}

.card-number {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  opacity: 0.6;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: contain;
  background: rgba(0, 255, 136, 0.05);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.card-icon-placeholder {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.card-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}

.status-dot.released { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.beta     { background: var(--cyan);  box-shadow: 0 0 6px var(--cyan); }
.status-dot.dev      { background: #f6c90e;       box-shadow: 0 0 6px #f6c90e; }
.status-dot.personal { background: #a0aec0; }

.card-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
  font-weight: 300;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tag {
  font-size: 0.65rem;
  color: rgba(0, 255, 136, 0.7);
  border: 1px solid rgba(0, 255, 136, 0.2);
  padding: 0.15rem 0.5rem;
  letter-spacing: 0.05em;
  transition: color 0.2s, border-color 0.2s;
}

.card:hover .tag {
  color: var(--green);
  border-color: rgba(0, 255, 136, 0.5);
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-muted);
  border: 1px solid rgba(160, 174, 192, 0.3);
  padding: 0.3rem 0.6rem;
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.2s, border-color 0.2s, box-shadow 0.2s;
  cursor: pointer;
  display: inline-block;
  background: transparent;
}

.btn-link:hover {
  color: var(--green);
  border-color: var(--green);
  box-shadow: 0 0 8px rgba(0, 255, 136, 0.25);
}

.btn-link.primary {
  color: rgba(0, 255, 136, 0.8);
  border-color: rgba(0, 255, 136, 0.4);
}

.btn-link.primary:hover {
  color: var(--green);
  border-color: var(--green);
  box-shadow: var(--glow-green);
}

/* ======== STACK ======== */
#stack {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  max-width: 100%;
  padding: 6rem 2rem;
}

#stack > * {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.stack-terminal {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  padding: 0;
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.terminal-titlebar {
  background: rgba(0, 255, 136, 0.05);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red    { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green  { background: #27c93f; }

.terminal-title-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.terminal-body {
  padding: 1.5rem;
}

.terminal-line {
  margin-bottom: 0.25rem;
  font-size: 0.85rem;
  line-height: 1.8;
}

.t-prompt  { color: var(--green); }
.t-cmd     { color: var(--cyan); }
.t-comment { color: #4a5568; }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.stack-item {
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  cursor: default;
}

.stack-item:hover {
  border-color: var(--green);
  color: var(--green);
  background: rgba(0, 255, 136, 0.04);
}

.stack-item .item-prefix {
  color: var(--green);
  opacity: 0.6;
}

/* ======== FOOTER ======== */
footer {
  padding: 2.5rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg-primary);
}

.footer-text {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.footer-text .accent {
  color: var(--green);
}

/* ======== フェードインアニメーション ======== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ======== レスポンシブ ======== */
@media (max-width: 900px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .products-grid {
    grid-template-columns: 1fr;
  }

  nav {
    padding: 0 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  section {
    padding: 4rem 1rem;
  }

  .hero {
    padding: 80px 1rem 3rem;
  }
}