:root {
  --primary: #4110d0;
  --primary-dark: #2f0b9a;
  --primary-soft: #efe9ff;
  --bg: #f4f5fb;
  --surface: #ffffff;
  --text: #1c1e2b;
  --muted: #6b7280;
  --border: #e5e7ef;
  --success: #0f9d58;
  --error: #d93025;
  --warn: #e6a700;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(28, 30, 43, 0.08);
  --sidebar: #160848;
  --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.45;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  background: var(--primary-soft);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: linear-gradient(180deg, var(--sidebar), #230a70 60%, #4110d0);
  color: #fff;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand strong { display: block; font-size: 1.05rem; }
.brand small { color: rgba(255,255,255,0.7); }
.brand-center { justify-content: center; margin-bottom: 12px; flex-direction: column; text-align: center; }
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: #fff;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
}

.nav { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.nav a {
  color: rgba(255,255,255,0.85);
  padding: 10px 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 500;
}
.nav a:hover, .nav a.active {
  background: rgba(255,255,255,0.14);
  color: #fff;
  text-decoration: none;
}

.sidebar-foot { display: grid; gap: 10px; }
.admin-chip {
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.9rem;
}

.main { display: flex; flex-direction: column; min-width: 0; }
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 20px 28px;
}
.topbar h1 { margin: 0; font-size: 1.35rem; }
.content { padding: 28px; flex: 1; }
.footer {
  padding: 16px 28px;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 0.9rem; }
.card .value { font-size: 1.8rem; font-weight: 700; margin-top: 6px; color: var(--primary); }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 20px;
}
.panel h2 { margin: 0 0 16px; font-size: 1.1rem; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}
.form-grid .full { grid-column: 1 / -1; }
label { display: grid; gap: 6px; font-size: 0.9rem; font-weight: 600; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(65, 16, 208, 0.25);
  border-color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { text-decoration: none; filter: brightness(1.03); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-secondary { background: var(--primary-soft); color: var(--primary); }
.btn-danger { background: #fde8e6; color: var(--error); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.35); }
.btn-sm { padding: 6px 10px; font-size: 0.85rem; }
.btn-block { width: 100%; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
th, td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: #fafaff; }

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}
.badge-active { background: #e7f8ef; color: var(--success); }
.badge-inactive { background: #f3f4f6; color: #555; }
.badge-suspended { background: #fde8e6; color: var(--error); }
.badge-free { background: #eef2ff; color: #3730a3; }
.badge-premium { background: var(--primary-soft); color: var(--primary); }

.alert {
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-weight: 500;
}
.alert-success { background: #e7f8ef; color: #0b6b3a; }
.alert-error { background: #fde8e6; color: #8f1d16; }
.alert-info { background: var(--primary-soft); color: var(--primary-dark); }

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85rem; word-break: break-all; }

.auth-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at top right, rgba(65,16,208,0.25), transparent 40%),
    radial-gradient(circle at bottom left, rgba(65,16,208,0.18), transparent 45%),
    var(--bg);
}
.auth-card {
  width: min(420px, 100%);
  background: var(--surface);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 28px;
  border: 1px solid var(--border);
}
.auth-card h1 { margin: 0 0 8px; font-size: 1.4rem; }
.auth-card .sub { color: var(--muted); margin-bottom: 20px; }
.auth-card form { display: grid; gap: 14px; }
.auth-extra { margin-top: 18px; text-align: center; }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.inline-form { display: inline; }
.token-box {
  background: #f8f7ff;
  border: 1px dashed #cfc4ff;
  border-radius: 12px;
  padding: 12px;
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 10; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .form-grid { grid-template-columns: 1fr; }
  .content, .topbar, .footer { padding-left: 16px; padding-right: 16px; }
  table { display: block; overflow-x: auto; }
}