:root {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #151b23;
  --panel-2: #1b2330;
  --text: #edf2f7;
  --muted: #9aa7b4;
  --border: #303a46;
  --accent: #50a2ff;
  --accent-2: #2563eb;
  --danger: #ff6b6b;
  --success: #5ee38a;
  --warning: #ffcc66;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #152033 0, var(--bg) 45%);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem 1rem;
  background: rgba(13, 17, 23, .9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.brand { color: var(--text); font-weight: 800; letter-spacing: .02em; }
.nav { display: flex; align-items: center; gap: .9rem; flex-wrap: wrap; }
.inline-form { display: inline; margin: 0; }
.link-button { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

.page { width: min(1120px, calc(100% - 2rem)); margin: 1.5rem auto 4rem; }
.hero, .page-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: center; margin-bottom: 1rem; }
h1 { margin: 0 0 .4rem; font-size: clamp(1.8rem, 5vw, 2.5rem); }
h2 { margin: 0 0 .65rem; }
p { line-height: 1.55; }
.muted { color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0,0,0,.22);
  padding: 1rem;
}
.narrow { max-width: 460px; margin: 2rem auto; }
.muted-card { opacity: .88; }

.form { display: grid; gap: .9rem; }
label { display: grid; gap: .35rem; font-weight: 650; }
input, select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #0b1220;
  color: var(--text);
  padding: .8rem .9rem;
  font: inherit;
}
input:focus, select:focus { outline: 2px solid rgba(80, 162, 255, .35); border-color: var(--accent); }
.checkbox { display: flex; align-items: center; gap: .55rem; font-weight: 500; }
.checkbox input { width: auto; }

button, .button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--accent-2);
  border-radius: 12px;
  background: var(--accent-2);
  color: white;
  padding: .75rem 1rem;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
  text-decoration: none;
}
button:hover, .button:hover { filter: brightness(1.08); text-decoration: none; }
.secondary { background: transparent; border-color: var(--border); color: var(--text); }
.button-row { display: flex; gap: .65rem; flex-wrap: wrap; }

.flash-stack { display: grid; gap: .5rem; margin-bottom: 1rem; }
.flash { border-radius: 12px; padding: .75rem .9rem; border: 1px solid var(--border); background: var(--panel); }
.flash-error { border-color: rgba(255,107,107,.5); color: #ffd5d5; }
.flash-success { border-color: rgba(94,227,138,.45); color: #d6ffe1; }
.flash-warning { border-color: rgba(255,204,102,.5); color: #fff1c9; }
.flash-info { color: #d8eaff; }

.table-card { padding: 0; overflow: hidden; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { text-align: left; padding: .85rem 1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-size: .86rem; text-transform: uppercase; letter-spacing: .05em; }
tr:last-child td { border-bottom: 0; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; }
.pill, .status { display: inline-flex; border-radius: 999px; padding: .22rem .55rem; font-size: .82rem; border: 1px solid var(--border); margin: .1rem .2rem .1rem 0; }
.status.ok { color: var(--success); }
.status.bad { color: var(--danger); }
.status.warn { color: var(--warning); }

@media (max-width: 640px) {
  .topbar, .hero, .page-heading { align-items: flex-start; flex-direction: column; }
  .nav { gap: .7rem; }
  .page { width: min(100% - 1rem, 1120px); }
}

.form-section {
  display: grid;
  gap: .55rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: .9rem;
  background: rgba(255, 255, 255, .025);
}
.form-section h2 { font-size: 1.05rem; margin: 0; }
.form-section p { margin: 0; }