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

:root {
  --bg: #f0f0f0;
  --text: #1a1a1a;
  --subtitle: #666;
  --card-bg: #fff;
  --card-type: #999;
  --code-bg: #f5f5f5;
  --toast-bg: #1a1a1a;
  --toast-text: #fff;
  --btn-bg: #fff;
  --btn-border: #ddd;
}
:root[data-theme="dark"] {
  --bg: #16181c;
  --text: #f0f0f0;
  --subtitle: #9aa0a6;
  --card-bg: #24262b;
  --card-type: #888;
  --code-bg: #313337;
  --toast-bg: #f0f0f0;
  --toast-text: #1a1a1a;
  --btn-bg: #24262b;
  --btn-border: #3a3d42;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #16181c;
    --text: #f0f0f0;
    --subtitle: #9aa0a6;
    --card-bg: #24262b;
    --card-type: #888;
    --code-bg: #313337;
    --toast-bg: #f0f0f0;
    --toast-text: #1a1a1a;
    --btn-bg: #24262b;
    --btn-border: #3a3d42;
  }
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 700;
  background: var(--bg);
  color: var(--text);
  padding: 16px 12px;
  overflow-x: hidden;
  transition: background 0.2s, color 0.2s;
}
h1 { font-size: 2rem; font-weight: 900; text-align: center; margin-bottom: 6px; }
.subtitle { text-align: center; font-size: 15px; color: var(--subtitle); margin-bottom: 16px; font-weight: 700; }

.theme-toggle {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 1000;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--text);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
}
.theme-toggle:active { transform: scale(0.92); }

.grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  max-width: 1500px;
  margin: 0 auto;
}
@media (max-width: 1100px) { .grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 750px) { .grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 500px) { .grid { grid-template-columns: repeat(2, 1fr); } }
.card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  border: 2px solid transparent;
  min-width: 0;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.1); }
.card:active { transform: scale(0.97); }
.card.copied { border-color: #10b981; animation: flash 0.5s ease; }
.card.navigate { border-color: #3b82f6; animation: flashBlue 0.5s ease; }
@keyframes flash { 0%{background:var(--card-bg)} 30%{background:#10b98133} 100%{background:var(--card-bg)} }
@keyframes flashBlue { 0%{background:var(--card-bg)} 30%{background:#3b82f633} 100%{background:var(--card-bg)} }
.card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  min-width: 0;
}
.icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 900;
  color: #fff;
  flex-shrink: 0;
}
.card-info { min-width: 0; overflow: hidden; }
.card-name {
  font-size: 17px;
  font-weight: 900;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-type {
  font-size: 14px;
  color: var(--card-type);
  font-weight: 700;
}
.code-box {
  background: var(--code-bg);
  border-radius: 5px;
  padding: 6px 10px;
  font-size: 16px;
  font-weight: 900;
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  min-width: 0;
}
.toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--toast-bg); color: var(--toast-text); padding: 12px 26px;
  border-radius: 8px; font-size: 16px; font-weight: 900;
  opacity: 0; transition: all 0.3s ease;
  pointer-events: none; z-index: 999; white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }