:root {
  --fsm-primary: #0b5566;   /* deep teal - infrastructure/utility feel */
  --fsm-primary-dark: #073b47;
  --fsm-accent: #f2994a;    /* safety-orange accent */
  --fsm-bg: #f4f6f8;
}

body {
  background-color: var(--fsm-bg);
}

#app-wrapper {
  min-height: 100vh;
}

.sidebar {
  width: 250px;
  min-width: 250px;
  background: linear-gradient(180deg, var(--fsm-primary-dark), var(--fsm-primary));
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar .nav-link {
  border-radius: 6px;
  margin-bottom: 4px;
  opacity: 0.9;
}
.sidebar .nav-link:hover {
  background-color: rgba(255,255,255,0.12);
}
.sidebar .nav-link.active {
  background-color: var(--fsm-accent);
  color: #1a1a1a !important;
  font-weight: 600;
  opacity: 1;
}

.main-content {
  min-width: 0;
}

.stat-card {
  border: none;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--fsm-primary);
}

.btn-primary {
  background-color: var(--fsm-primary);
  border-color: var(--fsm-primary);
}
.btn-primary:hover {
  background-color: var(--fsm-primary-dark);
  border-color: var(--fsm-primary-dark);
}

.form-section {
  background: #fff;
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  border-left: 4px solid var(--fsm-primary);
}

.thumb-preview {
  width: 90px;
  height: 90px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid #dee2e6;
}

.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--fsm-primary-dark), var(--fsm-primary));
}

.login-card {
  border: none;
  border-radius: 14px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
  max-width: 420px;
  width: 100%;
}

@media (max-width: 768px) {
  .sidebar { width: 100%; height: auto; position: relative; }
  #app-wrapper { flex-direction: column; }
}