:root {
  --bg: #0c1419;
  --bg-elev: #132029;
  --bg-soft: #1a2c36;
  --line: rgba(180, 210, 220, 0.12);
  --text: #e8f1f6;
  --muted: #8aa3b0;
  --accent: #3db8a0;
  --accent-2: #f0b429;
  --danger: #e35d6a;
  --warn: #e2a03f;
  --ok: #3db8a0;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Instrument Serif", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 184, 160, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(240, 180, 41, 0.08), transparent 45%),
    linear-gradient(180deg, #0a1014 0%, var(--bg) 40%, #0e171d 100%);
}

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

.app-shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar {
  background: rgba(12, 20, 25, 0.92);
  border-right: 1px solid var(--line);
  padding: 1.4rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { display: flex; gap: 0.85rem; align-items: center; padding: 0.35rem 0.5rem; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, #3db8a0, #1f7a6a);
  color: #041014; font-weight: 700; font-size: 1.2rem;
  box-shadow: 0 8px 24px rgba(61, 184, 160, 0.35);
}
.brand strong { display: block; font-size: 1.05rem; }
.brand small { color: var(--muted); }
.sidebar nav { display: flex; flex-direction: column; gap: 0.25rem; flex: 1; }
.sidebar nav a {
  color: var(--muted);
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  text-decoration: none;
  transition: 0.15s ease;
}
.sidebar nav a:hover, .sidebar nav a.active {
  background: var(--bg-soft);
  color: var(--text);
  text-decoration: none;
}
.sidebar-foot { border-top: 1px solid var(--line); padding-top: 1rem; display: grid; gap: 0.75rem; }
.user-chip strong { display: block; }
.user-chip small { color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.72rem; }

.main { padding: 1.5rem 1.75rem 2.5rem; }
.topbar { margin-bottom: 1.25rem; }
.topbar h1 {
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.8rem, 2.4vw, 2.4rem);
  letter-spacing: -0.02em;
}

.grid-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.stat-card, .card {
  background: rgba(19, 32, 41, 0.88);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.stat-card { padding: 1.1rem 1.2rem; }
.stat-card span { color: var(--muted); font-size: 0.85rem; }
.stat-card strong { display: block; font-size: 1.8rem; margin-top: 0.35rem; font-family: var(--display); font-weight: 400; }
.card { padding: 1.2rem 1.3rem; margin-bottom: 1.1rem; }
.card-head {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  margin-bottom: 1rem; flex-wrap: wrap;
}
.card-head h2 { margin: 0; font-size: 1.05rem; font-weight: 600; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  border: 0; border-radius: 10px; padding: 0.7rem 1rem;
  font: inherit; font-weight: 600; cursor: pointer;
  text-decoration: none; transition: 0.15s ease;
}
.btn:hover { text-decoration: none; filter: brightness(1.05); }
.btn-primary { background: linear-gradient(145deg, #45c9b0, #2a9a86); color: #041014; }
.btn-secondary { background: var(--bg-soft); color: var(--text); border: 1px solid var(--line); }
.btn-danger { background: rgba(227, 93, 106, 0.18); color: #ffb4bb; border: 1px solid rgba(227, 93, 106, 0.35); }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); }
.btn-sm { padding: 0.45rem 0.75rem; font-size: 0.88rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.75rem 0.55rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600; }
td small { color: var(--muted); }

.badge {
  display: inline-flex; align-items: center; padding: 0.2rem 0.55rem;
  border-radius: 999px; font-size: 0.75rem; font-weight: 600; text-transform: lowercase;
}
.badge-ok { background: rgba(61,184,160,.15); color: #7de0cc; }
.badge-warn { background: rgba(226,160,63,.15); color: #f0c57a; }
.badge-danger { background: rgba(227,93,106,.15); color: #ffb4bb; }
.badge-muted { background: rgba(138,163,176,.15); color: #b7c9d2; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.9rem; }
.form-grid .full { grid-column: 1 / -1; }
label { display: grid; gap: 0.35rem; color: var(--muted); font-size: 0.88rem; }
input, select, textarea {
  width: 100%; border-radius: 10px; border: 1px solid var(--line);
  background: #0f1a21; color: var(--text); padding: 0.7rem 0.8rem; font: inherit;
}
textarea { min-height: 100px; resize: vertical; }
.actions { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 0.4rem; }

.alert {
  padding: 0.85rem 1rem; border-radius: 12px; margin-bottom: 1rem;
  border: 1px solid var(--line);
}
.alert-success { background: rgba(61,184,160,.12); color: #9be8d8; }
.alert-error { background: rgba(227,93,106,.12); color: #ffb4bb; }
.alert-info { background: rgba(100,160,200,.12); color: #b7d7ea; }

.login-page {
  min-height: 100vh; display: grid; place-items: center; padding: 1.5rem;
}
.login-card {
  width: min(420px, 100%);
  background: rgba(19, 32, 41, 0.92);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 2rem 1.6rem 1.6rem;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.login-card::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.login-brand {
  text-align: center; margin-bottom: 1.5rem;
}
.login-brand .brand-mark { margin: 0 auto 0.9rem; width: 56px; height: 56px; font-size: 1.5rem; border-radius: 16px; }
.login-brand h1 {
  margin: 0 0 0.35rem;
  font-family: var(--display);
  font-weight: 400;
  font-size: 2rem;
}
.login-brand p { margin: 0; color: var(--muted); }
.login-card form { display: grid; gap: 0.9rem; }
.captcha-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; align-items: end; }
.captcha-row img {
  width: 100%; height: 54px; border-radius: 10px; border: 1px solid var(--line); cursor: pointer;
}
.check { display: flex; align-items: center; gap: 0.55rem; color: var(--muted); font-size: 0.9rem; }
.check input { width: auto; }
.login-foot { margin-top: 1.2rem; text-align: center; color: var(--muted); font-size: 0.85rem; }

.empty { color: var(--muted); padding: 1rem 0; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.86rem; }
.toolbar { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 1rem; }
.search { max-width: 280px; }

@media (max-width: 1100px) {
  .grid-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .form-grid { grid-template-columns: 1fr; }
  .captcha-row { grid-template-columns: 1fr; }
}