:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel-weak: #f8fafc;
  --line: #d9e2ec;
  --text: #182230;
  --muted: #61758a;
  --brand: #155eef;
  --brand-soft: #eaf1ff;
  --success: #067647;
  --danger: #b42318;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
a { color: inherit; text-decoration: none; }
button, input, textarea {
  font: inherit;
}
button {
  border: 0;
  background: var(--brand);
  color: #fff;
  border-radius: 12px;
  padding: 10px 16px;
  cursor: pointer;
  transition: transform .12s ease, opacity .12s ease;
}
button:hover { transform: translateY(-1px); }
button.ghost {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--line);
}
button.danger { color: var(--danger); }
input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  background: #fff;
}
label span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}
.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
.sidebar {
  border-right: 1px solid var(--line);
  background: #fbfdff;
  padding: 32px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar h1 { margin: 0 0 8px; font-size: 26px; }
.sidebar p { margin: 0; color: var(--muted); line-height: 1.6; }
.sidebar nav { display: grid; gap: 10px; }
.sidebar nav a {
  border-radius: 12px;
  padding: 10px 12px;
  color: var(--text);
}
.sidebar nav a:hover { background: var(--brand-soft); }
.content {
  padding: 36px;
  display: grid;
  gap: 20px;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.panel-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.panel-header h2, .panel h3 { margin: 0 0 8px; }
.panel-header p, .panel p { margin: 0; color: var(--muted); line-height: 1.6; }
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}
.summary-card {
  background: var(--panel-weak);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
}
.summary-card strong {
  display: block;
  font-size: 28px;
  margin-top: 8px;
}
.badge {
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
}
.auth-panel {
  max-width: 560px;
}
.stack-form {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}
.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.two-col .full { grid-column: 1 / -1; }
.actions {
  display: flex;
  justify-content: flex-end;
}
.split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
}
.split-wide {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 20px;
}
.list {
  display: grid;
  gap: 12px;
}
.item {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
  background: var(--panel-weak);
}
.item .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}
.item .actions {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  justify-content: flex-start;
}
.reveal {
  margin-top: 14px;
  padding: 14px;
  border-radius: 16px;
  background: #eefbf3;
  border: 1px solid #b7ebc6;
  color: var(--success);
  word-break: break-all;
}
.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th {
  background: #f8fafc;
  color: var(--muted);
}
.hidden { display: none !important; }
.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  padding: 12px 16px;
  border-radius: 14px;
  color: #fff;
  background: #111827;
  box-shadow: var(--shadow);
}
@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .split, .split-wide, .two-col { grid-template-columns: 1fr; }
}