* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
}

/* AUTH */
.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
  background: linear-gradient(180deg, #0b1220 0%, #0f172a 100%);
}

.login-wrap { width: 100%; max-width: 420px; }
.login-card {
  background: #111827;
  border: 1px solid #263244;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
}
.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #ef4444;
  color: #fff;
  font-weight: bold;
}
.login-brand h1 {
  margin: 0;
  font-size: 18px;
}
.login-brand p {
  margin: 2px 0 0 0;
  color: #94a3b8;
  font-size: 13px;
}
.form { display: grid; gap: 12px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 13px; color: #94a3b8; }
.field input {
  width: 100%;
  border: 1px solid #263244;
  border-radius: 10px;
  padding: 10px 12px;
  background: #0b1220;
  color: #e5e7eb;
}
.btn {
  border: none;
  cursor: pointer;
  border-radius: 10px;
  padding: 10px 14px;
}
.btn-primary {
  background: #ef4444;
  color: #fff;
  font-weight: 600;
}
.login-tip {
  margin-top: 12px;
  color: #94a3b8;
  font-size: 12px;
}

/* APP LAYOUT */
.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
}
.sidebar {
  background: #0b1220;
  border-right: 1px solid #263244;
  padding: 16px;
  display: flex;
  flex-direction: column;
}
.brand {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 18px;
}
.menu {
  display: grid;
  gap: 8px;
}
.menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: #e5e7eb;
  text-decoration: none;
}
.menu a:hover,
.menu a.active {
  background: rgba(239, 68, 68, .12);
  border: 1px solid rgba(239, 68, 68, .22);
}
.sidebar-user {
  margin-top: auto;
  border-top: 1px solid #263244;
  padding-top: 12px;
}
.sidebar-user small,
.sidebar-user .roles {
  color: #94a3b8;
  display: block;
  margin-top: 4px;
  font-size: 12px;
}
.logout-link {
  display: inline-block;
  margin-top: 10px;
  color: #fca5a5;
  text-decoration: none;
}

.main-content {
  padding: 18px;
}
.topbar h1 {
  margin: 0;
}
.topbar p {
  margin: 4px 0 16px;
  color: #94a3b8;
}

.cards-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.card {
  background: #111827;
  border: 1px solid #263244;
  border-radius: 14px;
  padding: 14px;
}
.card span {
  display: block;
  color: #94a3b8;
  font-size: 13px;
}
.card strong {
  display: block;
  margin-top: 8px;
  font-size: 20px;
}
.panel {
  margin-top: 16px;
  background: #111827;
  border: 1px solid #263244;
  border-radius: 14px;
  padding: 14px;
}

.alert {
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 14px;
}
.alert-error {
  background: rgba(239, 68, 68, .08);
  border: 1px solid rgba(239, 68, 68, .2);
  color: #fecaca;
}
.alert-success {
  background: rgba(16, 185, 129, .08);
  border: 1px solid rgba(16, 185, 129, .2);
  color: #bbf7d0;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    border-right: none;
    border-bottom: 1px solid #263244;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
}