/* =============================================================
   d-OP Portal Styles
   デザインシステム: 拡張機能 styles.css / styles-store.css と共通
   ============================================================= */

:root {
  --dop-accent: #e60012;
  --dop-accent-hover: #ff1a2d;
  --dop-accent-pressed: #b3000e;
  --dop-accent-subtle: rgba(230, 0, 18, 0.15);

  --dop-info: #0a84ff;
  --dop-warning: #ffcc00;
  --dop-success: #30d158;
  --dop-pink: #ff8ba7;

  --dop-bg-base: #0a0a0c;
  --dop-bg-panel: #141418;
  --dop-bg-elevated: #1c1c22;
  --dop-bg-overlay: rgba(10, 10, 12, 0.6);

  --dop-border: rgba(255, 255, 255, 0.10);
  --dop-border-strong: rgba(255, 255, 255, 0.18);

  --dop-text-primary: #ffffff;
  --dop-text-secondary: rgba(255, 255, 255, 0.68);
  --dop-text-tertiary: rgba(255, 255, 255, 0.42);

  --dop-font: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", "Meiryo", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --dop-font-mono: "SF Mono", "JetBrains Mono", "Fira Code", "Noto Sans JP", monospace;

  --dop-radius-sm: 4px;
  --dop-radius-md: 6px;
  --dop-radius-lg: 10px;
  --dop-radius-full: 9999px;

  --dop-space-1: 4px;
  --dop-space-2: 8px;
  --dop-space-3: 12px;
  --dop-space-4: 16px;
  --dop-space-5: 24px;
  --dop-space-6: 32px;
  --dop-space-7: 48px;
  --dop-space-8: 64px;
  --dop-space-9: 96px;

  --dop-transition-fast: 120ms ease-out;
  --dop-transition-base: 180ms ease-out;
  --dop-transition-slow: 280ms ease-out;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--dop-bg-base);
  color: var(--dop-text-primary);
  font-family: var(--dop-font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--dop-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* アクセシビリティ: キーボードスキップ */
.skip-link {
  position: absolute;
  top: -40px;
  left: var(--dop-space-3);
  background: var(--dop-accent);
  color: #fff;
  padding: var(--dop-space-2) var(--dop-space-3);
  border-radius: var(--dop-radius-sm);
  z-index: 100;
  transition: top var(--dop-transition-base);
}
.skip-link:focus { top: var(--dop-space-3); }

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--dop-space-4);
}

/* =============================================================
   Header
   ============================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 12, 0.78);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--dop-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--dop-space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--dop-space-3);
  color: var(--dop-text-primary);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--dop-radius-md);
  box-shadow: 0 0 0 1px var(--dop-border-strong);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-title { font-size: 18px; }
.brand-version {
  font-size: 11px;
  color: var(--dop-text-tertiary);
  font-family: var(--dop-font-mono);
  font-weight: 500;
}

.header-nav {
  display: flex;
  gap: var(--dop-space-5);
}
.header-nav a {
  color: var(--dop-text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: var(--dop-space-2) 0;
  transition: color var(--dop-transition-fast);
}
.header-nav a:hover { color: var(--dop-text-primary); }

@media (max-width: 560px) {
  .header-nav { display: none; }
}

/* =============================================================
   Hero
   ============================================================= */
.hero {
  padding: var(--dop-space-9) 0 var(--dop-space-7);
  background:
    radial-gradient(800px 400px at 80% 10%, rgba(230, 0, 18, 0.10), transparent 60%),
    radial-gradient(600px 300px at 10% 30%, rgba(10, 132, 255, 0.06), transparent 70%);
}
.hero-inner { text-align: center; }
.hero-eyebrow {
  margin: 0 0 var(--dop-space-3);
  color: var(--dop-text-tertiary);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: var(--dop-font-mono);
}
.hero-title {
  margin: 0 0 var(--dop-space-4);
  font-size: clamp(28px, 5.5vw, 48px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.hero-lede {
  max-width: 560px;
  margin: 0 auto var(--dop-space-5);
  color: var(--dop-text-secondary);
  font-size: clamp(15px, 2vw, 17px);
}
.hero-actions {
  display: flex;
  gap: var(--dop-space-3);
  justify-content: center;
  flex-wrap: wrap;
}

/* =============================================================
   Buttons
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--dop-space-2);
  padding: var(--dop-space-3) var(--dop-space-5);
  border-radius: var(--dop-radius-md);
  font-family: var(--dop-font);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--dop-transition-fast), border-color var(--dop-transition-fast), color var(--dop-transition-fast), transform var(--dop-transition-fast);
}
.btn-primary {
  background: var(--dop-accent);
  color: #fff;
  border-color: var(--dop-accent);
}
.btn-primary:hover { background: var(--dop-accent-hover); border-color: var(--dop-accent-hover); }
.btn-primary:active { background: var(--dop-accent-pressed); border-color: var(--dop-accent-pressed); transform: translateY(1px); }
.btn-ghost {
  background: transparent;
  color: var(--dop-text-primary);
  border-color: var(--dop-border-strong);
}
.btn-ghost:hover { border-color: var(--dop-accent); color: var(--dop-accent); }
.btn-share { padding: var(--dop-space-4) var(--dop-space-6); font-size: 16px; }

/* =============================================================
   Section
   ============================================================= */
.section {
  padding: var(--dop-space-8) 0;
  border-top: 1px solid var(--dop-border);
}
.section-head {
  margin-bottom: var(--dop-space-6);
  text-align: center;
}
.section-eyebrow {
  margin: 0 0 var(--dop-space-2);
  color: var(--dop-accent);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-family: var(--dop-font-mono);
  font-weight: 700;
}
.section-title {
  margin: 0 0 var(--dop-space-3);
  font-size: clamp(22px, 3.5vw, 30px);
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.005em;
}
.section-desc {
  margin: 0;
  color: var(--dop-text-secondary);
  font-size: 15px;
}

/* =============================================================
   Card Grids
   ============================================================= */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--dop-space-4);
}
.card-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

@media (max-width: 720px) {
  .card-grid, .card-grid-3 { grid-template-columns: 1fr; }
}

/* =============================================================
   Store Cards
   ============================================================= */
.store-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--dop-space-4);
  padding: var(--dop-space-5);
  background: var(--dop-bg-panel);
  border: 1px solid var(--dop-border);
  border-radius: var(--dop-radius-lg);
  color: var(--dop-text-primary);
  transition: border-color var(--dop-transition-base), transform var(--dop-transition-base), background var(--dop-transition-base);
}
.store-card:hover {
  border-color: var(--dop-accent);
  transform: translateY(-2px);
  background: var(--dop-bg-elevated);
}
.store-card-badge {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dop-bg-base);
  border-radius: var(--dop-radius-md);
  box-shadow: inset 0 0 0 1px var(--dop-border);
}
.store-card-body { flex: 1 1 auto; min-width: 0; }
.store-card-eyebrow {
  margin: 0 0 var(--dop-space-1);
  color: var(--dop-text-tertiary);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-family: var(--dop-font-mono);
  font-weight: 600;
}
.store-card-title {
  margin: 0 0 var(--dop-space-1);
  font-size: 17px;
  font-weight: 700;
}
.store-card-desc {
  margin: 0;
  color: var(--dop-text-secondary);
  font-size: 13px;
  line-height: 1.5;
}
.store-card-arrow {
  flex: 0 0 auto;
  font-size: 22px;
  color: var(--dop-text-tertiary);
  transition: color var(--dop-transition-fast), transform var(--dop-transition-fast);
}
.store-card:hover .store-card-arrow {
  color: var(--dop-accent);
  transform: translateX(2px);
}

/* =============================================================
   Support Cards
   ============================================================= */
.support-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--dop-space-3);
  padding: var(--dop-space-5);
  background: var(--dop-bg-panel);
  border: 1px solid var(--dop-border);
  border-radius: var(--dop-radius-lg);
  color: var(--dop-text-primary);
  transition: border-color var(--dop-transition-base), transform var(--dop-transition-base), background var(--dop-transition-base);
}
.support-card:hover {
  border-color: var(--dop-info);
  transform: translateY(-2px);
  background: var(--dop-bg-elevated);
}
.support-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dop-bg-base);
  border-radius: var(--dop-radius-md);
  box-shadow: inset 0 0 0 1px var(--dop-border);
}
.support-card-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}
.support-card-desc {
  margin: 0;
  flex: 1 1 auto;
  color: var(--dop-text-secondary);
  font-size: 13px;
  line-height: 1.55;
}
.support-card-tag {
  align-self: flex-start;
  margin-top: var(--dop-space-2);
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--dop-text-primary);
  background: var(--dop-bg-elevated);
  border: 1px solid var(--dop-border-strong);
  border-radius: var(--dop-radius-full);
}
.support-card:hover .support-card-tag { border-color: var(--dop-info); color: var(--dop-info); }

/* =============================================================
   Developer Cards
   ============================================================= */
.dev-card {
  display: flex;
  align-items: center;
  gap: var(--dop-space-4);
  padding: var(--dop-space-5);
  background: var(--dop-bg-panel);
  border: 1px solid var(--dop-border);
  border-radius: var(--dop-radius-lg);
  color: var(--dop-text-primary);
  transition: border-color var(--dop-transition-base), transform var(--dop-transition-base), background var(--dop-transition-base);
}
.dev-card:hover {
  border-color: var(--dop-success);
  transform: translateY(-2px);
  background: var(--dop-bg-elevated);
}
.dev-card-avatar {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: var(--dop-radius-full);
  object-fit: cover;
  background: var(--dop-bg-elevated);
  box-shadow: inset 0 0 0 1px var(--dop-border);
}
.dev-card-avatar-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--dop-font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--dop-text-secondary);
}
.dev-card-body { flex: 1 1 auto; min-width: 0; }
.dev-card-eyebrow {
  margin: 0 0 var(--dop-space-1);
  color: var(--dop-text-tertiary);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-family: var(--dop-font-mono);
  font-weight: 600;
}
.dev-card-name {
  margin: 0 0 var(--dop-space-1);
  font-size: 16px;
  font-weight: 700;
}
.dev-card-desc {
  margin: 0;
  color: var(--dop-text-secondary);
  font-size: 13px;
  line-height: 1.5;
}
.dev-card-arrow {
  flex: 0 0 auto;
  font-size: 22px;
  color: var(--dop-text-tertiary);
  transition: color var(--dop-transition-fast), transform var(--dop-transition-fast);
}
.dev-card:hover .dev-card-arrow { color: var(--dop-success); transform: translateX(2px); }

/* =============================================================
   Share Section
   ============================================================= */
.section-share {
  background:
    radial-gradient(500px 250px at 50% 0%, rgba(230, 0, 18, 0.10), transparent 70%);
}
.share-inner {
  text-align: center;
  padding: var(--dop-space-5) 0;
}

/* =============================================================
   Footer
   ============================================================= */
.site-footer {
  padding: var(--dop-space-7) 0;
  border-top: 1px solid var(--dop-border);
  background: var(--dop-bg-panel);
  color: var(--dop-text-tertiary);
  font-size: 13px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--dop-space-3);
  text-align: center;
}
.footer-copy { margin: 0; }
.footer-disclaimer { margin: 0; max-width: 540px; line-height: 1.6; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--dop-space-4);
  margin: var(--dop-space-3) 0 0;
  padding: 0;
  list-style: none;
}
.footer-links a {
  color: var(--dop-text-secondary);
  font-size: 13px;
  transition: color var(--dop-transition-fast);
}
.footer-links a:hover { color: var(--dop-accent); }

/* =============================================================
   Reduced motion
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}