:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --panel-2: #151d2b;
  --text: #e8edf5;
  --muted: #8b9bb4;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --ok: #22c55e;
  --warn: #f59e0b;
  --border: rgba(255,255,255,.1);
  --shadow: 0 4px 24px rgba(0,0,0,.25);
  --sidebar-w: 260px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* Auth layout */
.body--auth {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f1419 100%);
  min-height: 100vh;
}
.topbar--minimal { border-bottom: 1px solid var(--border); }
.main--auth { padding: 24px 20px; min-height: calc(100vh - 60px); }

.auth {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 0;
}
.auth__inner { width: 100%; max-width: 420px; }
.auth__tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
}
.auth__tab {
  flex: 1;
  padding: 10px 14px;
  text-align: center;
  border-radius: 10px;
  font-size: .9rem;
  color: var(--muted);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
}
.auth__tab:hover { color: var(--text); background: rgba(255,255,255,.08); }
.auth__tab--active {
  color: var(--accent);
  background: rgba(59,130,246,.15);
  border-color: rgba(59,130,246,.4);
}
.auth__card { padding: 24px; }
.auth__title { font-size: 1.4rem; font-weight: 600; margin: 0 0 6px 0; }
.auth__subtitle { color: var(--muted); font-size: .9rem; margin: 0 0 20px 0; }

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15,20,25,.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.topbar__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  max-width: 100%;
}
.brand a { font-weight: 700; font-size: 1.1rem; }
.topbar__user { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.nav__user { color: var(--muted); font-size: .9rem; }
.sidebar__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0;
  top: 53px;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--panel);
  border-right: 1px solid var(--border);
  z-index: 9;
  overflow-y: auto;
}
.sidebar__nav { padding: 16px 0; }
.sidebar__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: var(--muted);
  font-size: .95rem;
  transition: color .15s, background .15s;
}
.sidebar__link:hover { color: var(--text); background: rgba(255,255,255,.05); }
.sidebar__link--active { color: var(--accent); background: rgba(59,130,246,.1); }
.sidebar__icon { font-size: 1.1rem; }

/* Main content */
.main {
  margin-left: var(--sidebar-w);
  min-height: calc(100vh - 53px);
  display: flex;
  flex-direction: column;
}
.main__content { flex: 1; padding: 24px 20px; }

/* Cards */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.grid { display: grid; gap: 16px; }
.grid--2 { grid-template-columns: 1fr 1fr; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }

.h1 { font-size: 1.25rem; font-weight: 600; margin: 0 0 12px 0; }
.muted { color: var(--muted); font-size: .9rem; }

/* Flash */
.flash {
  margin-bottom: 16px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.flash--error { border-color: rgba(239,68,68,.4); background: rgba(239,68,68,.1); }
.flash--success { border-color: rgba(34,197,94,.4); background: rgba(34,197,94,.1); }
.flash--info { border-color: rgba(59,130,246,.4); background: rgba(59,130,246,.1); }

/* Forms */
label { display: block; margin: 10px 0 6px 0; color: var(--muted); font-size: .9rem; }
input, select, textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.2);
  color: var(--text);
  font-size: 1rem;
  outline: none;
}
textarea { min-height: 80px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59,130,246,.2);
}

/* Buttons */
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--text);
  transition: background .15s, border-color .15s;
}
.btn:hover { background: rgba(255,255,255,.1); }
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--danger { border-color: rgba(239,68,68,.5); background: rgba(239,68,68,.15); color: #fca5a5; }
.btn--danger:hover { background: rgba(239,68,68,.25); }
.btn--ghost { border-color: var(--border); background: transparent; }
.btn--ghost:hover { background: rgba(255,255,255,.06); }
.btn--small { padding: 8px 12px; font-size: .88rem; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin-top: 12px; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .85rem; }
tr:hover td { background: rgba(255,255,255,.02); }

/* Pills */
.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 500;
}
.pill--ok { background: rgba(34,197,94,.2); color: #86efac; }
.pill--warn { background: rgba(245,158,11,.2); color: #fcd34d; }
.pill--danger { background: rgba(239,68,68,.2); color: #fca5a5; }

/* Page header */
.page-header { margin-bottom: 24px; }
.page-title { font-size: 1.5rem; font-weight: 600; margin: 0 0 4px 0; }
.page-subtitle { color: var(--muted); font-size: .9rem; }

/* KPI cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.kpi {
  padding: 20px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
}
.kpi__label { font-size: .85rem; color: var(--muted); margin-bottom: 4px; }
.kpi__value { font-size: 1.75rem; font-weight: 700; }
.kpi__hint { font-size: .8rem; color: var(--muted); margin-top: 6px; }

/* Footer */
.footer { padding: 16px 20px; border-top: 1px solid var(--border); margin-top: auto; }

/* Sidebar toggle (mobile) */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform .2s;
  }
  body.sidebar-open .sidebar { transform: translateX(0); }
  .main { margin-left: 0; }
  .sidebar__toggle { display: block; }
}