:root {
  --bg: #0b1220;
  --card: rgba(16, 24, 42, 0.88);
  --line: rgba(148, 163, 184, 0.18);
  --text: #e5ecf6;
  --muted: #9fb0c7;
  --accent: #4cc9f0;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(76, 201, 240, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(255, 209, 102, 0.15), transparent 28%),
    linear-gradient(180deg, #08101c 0%, #0d1728 100%);
}

a { color: inherit; text-decoration: none; }
code {
  padding: 0.15rem 0.4rem;
  border-radius: 999px;
  background: rgba(76, 201, 240, 0.12);
  color: #9fe6ff;
}

.shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  margin: 1rem 0 1.5rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(8, 16, 28, 0.72);
  backdrop-filter: blur(18px);
}

.brand { font-size: 1.15rem; font-weight: 700; letter-spacing: 0.04em; }
.nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.nav a { color: var(--muted); transition: color 120ms ease; }
.nav a:hover { color: var(--text); }

.flash {
  padding: 0.9rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  margin-bottom: 1rem;
}
.flash-success { background: rgba(31, 169, 113, 0.16); }
.flash-error { background: rgba(194, 67, 75, 0.18); }

.hero-grid, .admin-grid { display: grid; gap: 1.25rem; }
.hero-grid { grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.8fr); }

.hero-card, .stats-card, .panel, .form-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  padding: 1.5rem;
}

.eyebrow {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 209, 102, 0.16);
  color: #ffe4a5;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1, h2, h3 { margin-top: 0; }
p, li, dd, dt, td, th, label span { color: var(--muted); }

.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1.25rem 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.8rem 1rem;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  font-weight: 600;
}

.btn-primary {
  border-color: rgba(76, 201, 240, 0.32);
  background: linear-gradient(135deg, rgba(76,201,240,0.22), rgba(64,130,255,0.26));
}

.feature-list { padding-left: 1.2rem; margin-bottom: 0; }
.stats-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.9rem; }
.stats-grid div, .account-panel {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.06);
}
.stats-grid strong { display: block; font-size: 1.5rem; color: var(--text); }

.account-panel dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem 1rem;
  margin: 0;
}

.form-wrap {
  display: grid;
  place-items: center;
  min-height: 60vh;
}

.form-card { width: min(480px, 100%); }
.stack { display: grid; gap: 1rem; }
label { display: grid; gap: 0.45rem; }

input, select {
  width: 100%;
  min-height: 46px;
  padding: 0.8rem 0.9rem;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(5, 9, 18, 0.72);
  color: var(--text);
}

.panel table {
  width: 100%;
  border-collapse: collapse;
}

.panel th, .panel td {
  padding: 0.7rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.inline-form {
  display: grid;
  grid-template-columns: 1.1fr 0.8fr auto;
  gap: 0.75rem;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 880px) {
  .hero-grid, .admin-grid, .inline-form { grid-template-columns: 1fr; }
  .topbar, .footer { flex-direction: column; align-items: flex-start; }
}