:root {
  /* Light Theme Variables */
  --bg-color: #f6f7fb;
  --text-color: #000;
  --muted-text-color: #6b7280;
  --card-bg: #fff;
  --border-color: #e6e8f0;
  --input-border-color: #d9deeb;
  --input-focus-border-color: #7aa7ff;
  --input-focus-shadow: rgba(122,167,255,.18);
  --button-bg: #fff;
  --button-border-color: #d9deeb;
  --button-primary-bg: #2563eb;
  --button-primary-color: #fff;
  --button-primary-border-color: #2563eb;
  --button-danger-color: #b91c1c;
  --button-danger-border-color: #f0c7c7;
  --table-header-color: #4b5563;
  --table-border-color: #eef1f7;
  --pill-bg: #eef2ff;
  --pill-color: #3730a3;
  --card-shadow: 0 6px 18px rgba(0,0,0,.04);
}

.dark-mode {
  /* Dark Theme Variables */
  --bg-color: #1a202c;
  --text-color: #e2e8f0;
  --muted-text-color: #a0aec0;
  --card-bg: #2d3748;
  --border-color: #4a5568;
  --input-border-color: #4a5568;
  --input-focus-border-color: #63b3ed;
  --input-focus-shadow: rgba(99,179,237,.18);
  --button-bg: #2d3748;
  --button-border-color: #4a5568;
  --button-primary-bg: #4299e1;
  --button-primary-color: #fff;
  --button-primary-border-color: #4299e1;
  --button-danger-color: #feb2b2;
  --button-danger-border-color: #fbd38d;
  --table-header-color: #a0aec0;
  --table-border-color: #4a5568;
  --pill-bg: #4a5568;
  --pill-color: #bee3f8;
  --card-shadow: 0 6px 18px rgba(0,0,0,.3);
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans KR", sans-serif;
  margin: 0;
  background: var(--bg-color);
  color: var(--text-color);
  color-scheme: light dark; /* Allow browser to pick color scheme */
}

.wrap { max-width: 980px; margin: 0 auto; padding: 24px; }
h1 { margin: 0 0 14px; font-size: 22px; }
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--card-shadow);
}
.grid { display: grid; gap: 12px; }
.row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; align-items: end; }
label { display:block; font-size: 12px; color:var(--table-header-color); margin: 0 0 6px; }
input[type="text"]{
  width: 100%; box-sizing: border-box; padding: 10px 12px; border: 1px solid var(--input-border-color);
  border-radius: 10px; outline: none; background:var(--card-bg); color: var(--text-color);
}
input[type="text"]:focus {
  border-color: var(--input-focus-border-color);
  box-shadow: 0 0 0 3px var(--input-focus-shadow);
}
.btns { display:flex; gap: 8px; }
button{
  border: 1px solid var(--button-border-color);
  background:var(--button-bg);
  color: var(--text-color);
  padding: 10px 12px; border-radius: 10px;
  cursor:pointer; font-weight: 600;
}
button.primary{ background:var(--button-primary-bg); color:var(--button-primary-color); border-color:var(--button-primary-border-color); }
button.danger{ background:var(--button-bg); color:var(--button-danger-color); border-color:var(--button-danger-border-color); }
button:disabled{ opacity:.55; cursor:not-allowed; }
.toolbar{ display:flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.toolbar .grow{ flex: 1 1 260px; }
select{
  padding: 10px 12px; border: 1px solid var(--input-border-color); border-radius: 10px;
  background:var(--card-bg); color: var(--text-color);
}
.meta { display:flex; gap: 12px; flex-wrap: wrap; color:var(--muted-text-color); font-size: 12px; }
table{ width:100%; border-collapse: collapse; }
th, td{ text-align:left; padding: 10px 10px; border-bottom: 1px solid var(--table-border-color); vertical-align: top; }
th{ font-size: 12px; color:var(--table-header-color); }
td{ font-size: 14px; }
.actions{ display:flex; gap: 8px; }
.pill{ display:inline-block; font-size: 11px; padding: 3px 8px; border-radius: 999px; background:var(--pill-bg); color:var(--pill-color); }
.muted{ color:var(--muted-text-color); }
.empty{ padding: 18px; text-align:center; color:var(--muted-text-color); }
.footer{ display:flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; align-items: center; }
.small{ font-size: 12px; color:var(--muted-text-color); }

/* Theme Toggle Button */
.theme-switcher {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  font-size: 24px;
  transition: all 0.3s ease;
  z-index: 1000;
}

.theme-switcher:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow);
}