:root {
  --bg: #0e1628;
  --glass: rgba(255, 255, 255, 0.14);
  --stroke: rgba(255, 255, 255, 0.24);
  --text: #f5f8ff;
  --muted: #d2ddf2;
  --accent: #2fd3b8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Be Vietnam Pro", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: linear-gradient(130deg, #0b1220, #152844);
  padding: 20px;
}

.bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 80% 10%, rgba(47, 211, 184, 0.2), transparent 40%),
    radial-gradient(circle at 10% 80%, rgba(53, 115, 255, 0.22), transparent 45%);
  pointer-events: none;
}

.panel {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
}

header {
  margin-bottom: 14px;
}

header h1 {
  margin: 0;
  font-size: 1.6rem;
}

header p {
  margin: 8px 0 0;
  color: var(--muted);
}

.card {
  background: var(--glass);
  border: 1px solid var(--stroke);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 14px;
}

.hidden {
  display: none;
}

h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label span {
  color: var(--muted);
  font-size: 0.92rem;
}

input,
button {
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.13);
  color: var(--text);
  padding: 11px 12px;
  font-size: 0.95rem;
}

button {
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  background: rgba(255, 255, 255, 0.22);
}

.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.ghost {
  max-width: 120px;
}

.msg,
.updated {
  color: #ddfff6;
  min-height: 20px;
  margin: 10px 0 0;
}

.preview {
  margin-top: 10px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  color: #f3fffc;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  text-align: left;
  padding: 10px 8px;
  font-size: 0.92rem;
}

thead th {
  color: var(--muted);
  font-weight: 600;
}

@media (max-width: 760px) {
  .grid {
    grid-template-columns: 1fr;
  }
}