:root {
  --bg: #0f1115;
  --panel: #161922;
  --panel-2: #1d212c;
  --border: #262b38;
  --text: #e6e8ee;
  --muted: #8b91a3;
  --accent: #5ee6c8;
  --accent-dim: #2a6e60;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Inter, system-ui, sans-serif;
}

.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 250px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 24px;
  padding: 0 6px;
  font-family: "SF Mono", Menlo, monospace;
}

.brand-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

nav { display: flex; flex-direction: column; gap: 4px; }

.nav-item {
  text-align: left;
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}

.nav-item:hover { background: var(--panel-2); color: var(--text); }

.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent);
}

.content { flex: 1; padding: 40px 48px; max-width: 720px; }

.tool { display: none; }
.tool.active { display: block; }

h1 { font-size: 22px; margin: 0 0 6px; }
.hint { color: var(--muted); font-size: 14px; margin: 0 0 20px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card .row { display: flex; gap: 10px; }

input[type="text"], textarea {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}

textarea { min-height: 90px; resize: vertical; }

label { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }

button {
  background: var(--accent);
  color: #0a0d10;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  align-self: flex-start;
}

button:hover { opacity: 0.85; }

.result { margin-top: 20px; }

.result-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  font-size: 14px;
  word-break: break-all;
}

.result-box .k { color: var(--muted); }
.result-box .v { color: var(--text); font-family: "SF Mono", Menlo, monospace; }
.result-box .short-link {
  color: var(--accent);
  font-family: "SF Mono", Menlo, monospace;
  font-size: 16px;
  cursor: pointer;
}
.result-box table { width: 100%; border-collapse: collapse; }
.result-box td { padding: 4px 0; vertical-align: top; }
.result-box td:first-child { color: var(--muted); width: 130px; }
.error { color: #ff6b6b; }