:root {
  --bg: #0f1220;
  --panel: #171b2e;
  --panel-2: #1d2238;
  --border: rgba(255,255,255,.08);
  --text: #e7e9f5;
  --muted: #9aa1c2;
  --purple: hsl(259, 72%, 62%);
  --purple-dark: hsl(259, 72%, 45%);
  --amber: hsl(38, 95%, 56%);
  --green: hsl(148, 55%, 50%);
  --red: hsl(0, 70%, 60%);
  --blue: hsl(205, 80%, 58%);
  --radius: 12px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }

.app-shell { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 18px 12px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem;
  padding: 8px 10px 22px;
}
.brand-icon { font-size: 1.4rem; }
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  color: var(--muted); font-size: .92rem; font-weight: 500;
}
.sidebar-nav a:hover { background: var(--panel-2); color: var(--text); }
.sidebar-nav a.active { background: linear-gradient(135deg, var(--purple), var(--purple-dark)); color: #fff; }
.ic { font-style: normal; }

/* Main / topbar */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky; top: 0; z-index: 5;
}
.topbar-title { font-size: 1.15rem; font-weight: 700; margin: 0; flex: 1; }
.topbar-user { display: flex; align-items: center; gap: 12px; font-size: .9rem; color: var(--muted); }
.menu-toggle {
  display: none; background: none; border: none; color: var(--text);
  font-size: 1.2rem; cursor: pointer;
}

.content { padding: 22px 24px 10px; flex: 1; }
.app-footer { padding: 14px 24px; color: var(--muted); font-size: .82rem; border-top: 1px solid var(--border); }

/* Flash messages */
.flash { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 18px; font-size: .9rem; }
.flash-success { background: rgba(52,199,89,.12); border: 1px solid rgba(52,199,89,.35); color: #7fe0a0; }
.flash-error   { background: rgba(255,69,58,.12); border: 1px solid rgba(255,69,58,.35); color: #ff9f98; }

/* Page header */
.page-header { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-header-actions { margin-left: auto; display: flex; gap: 10px; flex-wrap: wrap; }

/* KPI grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: block; transition: transform .15s ease, border-color .15s ease;
}
.stat-card:hover { transform: translateY(-2px); border-color: rgba(255,255,255,.18); }
.stat-card-icon { font-size: 1.3rem; margin-bottom: 8px; }
.stat-card-value { font-size: 1.6rem; font-weight: 700; }
.stat-card-label { color: var(--muted); font-size: .82rem; margin-top: 2px; }

/* Cards */
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 20px; }
.card-header { padding: 14px 18px; border-bottom: 1px solid var(--border); font-weight: 600; display: flex; align-items: center; gap: 10px; }
.card-body { padding: 18px; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
thead th {
  text-align: left; padding: 10px 14px; color: var(--muted); font-weight: 600;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:hover { background: var(--panel-2); }
.table-wrap { overflow-x: auto; }
.empty-row td { text-align: center; color: var(--muted); padding: 26px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px; border-radius: 8px; font-size: .87rem; font-weight: 600;
  border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: linear-gradient(135deg, var(--purple), var(--purple-dark)); color: #fff; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-ghost { background: var(--panel-2); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: rgba(255,255,255,.08); }
.btn-danger { background: rgba(255,69,58,.12); border-color: rgba(255,69,58,.4); color: #ff9f98; }
.btn-danger:hover { background: rgba(255,69,58,.2); }
.btn-sm { padding: 6px 12px; font-size: .8rem; }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .82rem; color: var(--muted); font-weight: 500; }
.form-control, select.form-control, textarea.form-control {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 10px 12px; border-radius: 8px; font-size: .92rem; font-family: inherit;
}
.form-control:focus { outline: none; border-color: var(--purple); }
.form-actions { margin-top: 18px; display: flex; gap: 10px; }

/* Badges */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .75rem; font-weight: 600; }
.badge-purple { background: rgba(138,99,255,.15); color: #b7a1ff; }
.badge-green  { background: rgba(52,199,89,.15); color: #7fe0a0; }
.badge-amber  { background: rgba(255,183,46,.15); color: #ffcf7a; }
.badge-blue   { background: rgba(58,150,255,.15); color: #8fc3ff; }

/* Auth page (login) */
.auth-wrapper {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 30% 20%, #241f45 0%, var(--bg) 60%);
  padding: 20px;
}
.auth-card { width: 100%; max-width: 380px; background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 34px 30px; }
.auth-brand { text-align: center; margin-bottom: 22px; }
.auth-brand .brand-icon { font-size: 2.2rem; }
.auth-brand h1 { font-size: 1.3rem; margin: 8px 0 2px; }
.auth-brand p { color: var(--muted); font-size: .85rem; margin: 0; }
.auth-card form { display: flex; flex-direction: column; gap: 14px; margin-top: 10px; }
.auth-card .btn { justify-content: center; margin-top: 6px; }
.auth-footer { text-align: center; color: var(--muted); font-size: .78rem; margin-top: 18px; }

@media (max-width: 860px) {
  .sidebar {
    position: fixed; left: -240px; top: 0; height: 100vh; z-index: 20;
    transition: left .2s ease; box-shadow: 0 0 40px rgba(0,0,0,.5);
  }
  .sidebar-open .sidebar { left: 0; }
  .menu-toggle { display: inline-block; }
}