* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f6f8;
  color: #202124;
}

.hidden {
  display: none !important;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    radial-gradient(circle at top right, rgba(213,0,0,.12), transparent 35%),
    #f5f6f8;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: white;
  border-radius: 22px;
  padding: 38px;
  box-shadow: 0 18px 55px rgba(0,0,0,.10);
}

.brand-mark {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: #d50000;
  color: white;
  display: grid;
  place-items: center;
  font-size: 34px;
  font-weight: 800;
}

.brand-mark.small {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  font-size: 23px;
}

.login-card h1 {
  margin: 20px 0 4px;
}

.login-card p {
  margin: 0 0 28px;
  color: #777;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin: 16px 0 7px;
}

input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid #d7d9dd;
  border-radius: 10px;
  font-size: 15px;
}

button {
  cursor: pointer;
}

.login-card button {
  width: 100%;
  margin-top: 22px;
  padding: 14px;
  border: 0;
  border-radius: 10px;
  background: #d50000;
  color: white;
  font-weight: 700;
  font-size: 15px;
}

.error {
  color: #b00020;
  min-height: 20px;
  margin-top: 14px;
  font-size: 13px;
}

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

.sidebar {
  width: 250px;
  background: #15171a;
  color: white;
  padding: 22px 16px;
  display: flex;
  flex-direction: column;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 3px 8px 24px;
}

.brand span {
  display: block;
  color: #b6b8bd;
  font-size: 13px;
  margin-top: 2px;
}

nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav {
  border: 0;
  background: transparent;
  color: #d6d7da;
  text-align: left;
  padding: 12px 13px;
  border-radius: 9px;
  font-size: 14px;
}

.nav:hover,
.nav.active {
  background: #292c31;
  color: white;
}

.nav.active {
  border-left: 3px solid #e00000;
}

.logout {
  margin-top: auto;
  background: transparent;
  border: 1px solid #3b3e44;
  color: #ddd;
  border-radius: 9px;
  padding: 11px;
}

.content {
  flex: 1;
  padding: 30px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 26px;
}

header h2 {
  margin: 0 0 4px;
  font-size: 27px;
}

header p {
  margin: 0;
  color: #777;
}

.status-pill {
  background: #e9f7ed;
  color: #19743a;
  padding: 9px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.card,
.panel-box {
  background: white;
  border-radius: 15px;
  padding: 22px;
  box-shadow: 0 4px 14px rgba(0,0,0,.05);
}

.card span {
  display: block;
  color: #777;
  margin-bottom: 10px;
  font-size: 13px;
}

.card strong {
  font-size: 30px;
}

.panel-box h3 {
  margin-top: 0;
}

.view {
  display: none;
}

.active-view {
  display: block;
}

@media (max-width: 900px) {
  .sidebar {
    width: 205px;
  }

  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 650px) {
  .app {
    display: block;
  }

  .sidebar {
    width: 100%;
  }

  nav {
    max-height: 230px;
    overflow-y: auto;
  }

  .content {
    padding: 20px;
  }

  header {
    align-items: flex-start;
    gap: 15px;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}