:root {
  --panel-bg: rgba(8, 14, 26, 0.88);
  --panel-bg-2: rgba(10, 20, 34, 0.94);
  --panel-border: rgba(94, 234, 212, 0.22);
  --panel-glow: rgba(56, 189, 248, 0.22);
  --text-main: #e2f0ff;
  --text-muted: #97abc2;
  --accent-a: #67e8f9;
  --accent-b: #3b82f6;
  --accent-c: #fb923c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0.2px;
  background:
    radial-gradient(1200px 700px at 90% -20%, rgba(56, 189, 248, 0.24), transparent 52%),
    radial-gradient(900px 540px at -10% 10%, rgba(99, 102, 241, 0.22), transparent 55%),
    radial-gradient(640px 420px at 50% 120%, rgba(251, 146, 60, 0.14), transparent 62%),
    #040913;
  color: var(--text-main);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at 50% 30%, black 24%, transparent 80%);
  opacity: 0.16;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 24px auto;
  padding: 0 16px 18px;
}

.legacy-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #f3ecd9;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.legacy-brand::before {
  content: "";
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  border-radius: 10px;
  background:
    radial-gradient(circle at 28% 24%, rgba(255,255,255,0.28), transparent 34%),
    url("./assets/brand/blacktide-avatar-512.png") center / cover no-repeat,
    linear-gradient(180deg, rgba(230,205,140,0.98), rgba(154,112,18,0.96));
  border: 1px solid rgba(208,176,108,0.42);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06) inset, 0 10px 24px rgba(0,0,0,0.28), 0 0 16px rgba(208,176,108,0.18);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 8px;
  font-family: "Trebuchet MS", "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  letter-spacing: 0.5px;
}

h1 {
  margin-bottom: 6px;
}

.muted {
  color: var(--text-muted);
  margin-top: 0;
}

.card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--panel-bg), var(--panel-bg-2));
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 16px;
  margin-top: 14px;
  box-shadow: 0 14px 34px rgba(2, 8, 23, 0.5), inset 0 0 0 1px rgba(56, 189, 248, 0.04);
  backdrop-filter: blur(8px);
}

.card::before {
  content: "";
  position: absolute;
  left: -22%;
  right: -22%;
  top: -60%;
  height: 120%;
  background: linear-gradient(110deg, transparent 40%, rgba(103, 232, 249, 0.12) 52%, transparent 64%);
  transform: rotate(-4deg);
  pointer-events: none;
}

.card.small {
  font-size: 14px;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.mt {
  margin-top: 14px;
}

button {
  border: 1px solid rgba(125, 211, 252, 0.35);
  border-radius: 10px;
  padding: 10px 14px;
  background: linear-gradient(135deg, var(--accent-b), #2563eb 50%, #1d4ed8);
  color: #ecfeff;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.2s ease;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.3);
}

button:hover:enabled {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.38);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: #b8cae1;
  font-weight: 600;
}

input,
select {
  min-width: 120px;
  border: 1px solid rgba(71, 85, 105, 0.92);
  border-radius: 10px;
  background: rgba(7, 12, 22, 0.92);
  color: var(--text-main);
  padding: 8px 10px;
  box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.04);
}

input:focus,
select:focus {
  outline: none;
  border-color: rgba(56, 189, 248, 0.72);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.16);
}

hr {
  border: none;
  border-top: 1px solid rgba(71, 85, 105, 0.7);
  margin: 14px 0;
}

.mono {
  margin-top: 10px;
  font-family: "Trebuchet MS", "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  color: #cde4ff;
  background: rgba(5, 10, 18, 0.58);
  border: 1px solid rgba(71, 85, 105, 0.42);
  border-radius: 10px;
  padding: 8px 10px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 8px;
}

.grid span {
  display: block;
  color: var(--text-muted);
  font-size: 13px;
}

.grid strong {
  display: block;
  margin-top: 4px;
  color: #e8f5ff;
}