/* EpiMetricsId - Calm & Soothing Theme */
:root {
  --calm-blue: #5b8cb5;
  --calm-navy: #3d5a80;
  --calm-slate: #6c8ea4;
  --calm-light: #f0f5f9;
  --calm-text: #2c3e50;
  --calm-muted: #7a8fa0;
  --calm-border: #dce6ed;
}

body {
  min-height: 100vh;
  background-color: var(--calm-light);
  color: var(--calm-text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* Cards - soft shadows, rounded */
.card {
  border: 1px solid var(--calm-border);
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(61,90,128,0.1);
  transform: translateY(-1px);
}

/* Navbar */
.navbar-brand {
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.5px;
}

.navbar .nav-link {
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.45rem 0.8rem !important;
  border-radius: 8px;
  transition: background 0.2s ease;
  color: rgba(255,255,255,0.88) !important;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  background: rgba(255,255,255,0.15);
  color: #fff !important;
}

/* Buttons - soft & rounded */
.btn {
  border-radius: 8px;
  font-weight: 500;
  padding: 0.5rem 1.2rem;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--calm-blue);
  border-color: var(--calm-blue);
}

.btn-primary:hover {
  background-color: var(--calm-navy);
  border-color: var(--calm-navy);
}

.btn-outline-primary {
  color: var(--calm-blue);
  border-color: var(--calm-blue);
}

.btn-outline-primary:hover {
  background-color: var(--calm-blue);
  border-color: var(--calm-blue);
}

/* Form controls */
.form-control, .form-select {
  border-radius: 8px;
  border-color: var(--calm-border);
  padding: 0.55rem 0.85rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus, .form-select:focus {
  border-color: var(--calm-slate);
  box-shadow: 0 0 0 3px rgba(91,140,181,0.15);
}

/* Tables - clean */
.table {
  color: var(--calm-text);
}

.table thead th {
  background-color: var(--calm-light);
  border-bottom: 2px solid var(--calm-border);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--calm-muted);
}

/* Alerts - softer tones */
.alert {
  border-radius: 10px;
  border: none;
  font-size: 0.9rem;
}

.alert-success {
  background-color: #e8f5e9;
  color: #2e7d32;
}

.alert-danger {
  background-color: #fdecea;
  color: #c62828;
}

.alert-info {
  background-color: #e3f2fd;
  color: #1565c0;
}

.alert-warning {
  background-color: #fff8e1;
  color: #f57f17;
}

/* Footer */
footer {
  background-color: #fff;
  border-top: 1px solid var(--calm-border) !important;
}

footer .text-muted {
  color: var(--calm-muted) !important;
  font-size: 0.82rem;
}

/* Headings */
h1 { color: var(--calm-navy); font-weight: 700; }
h2 { color: var(--calm-text); font-weight: 600; }
h3 { color: var(--calm-text); font-weight: 600; }
h4, h5, h6 { color: var(--calm-muted); font-weight: 600; }

/* Code blocks */
code {
  color: var(--calm-slate);
  background-color: #edf1f5;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

pre {
  background-color: #edf1f5;
  border-radius: 8px;
  border: 1px solid var(--calm-border);
}

/* Scrollbar */
::-webkit-scrollbar { width: 7px; }
::-webkit-scrollbar-track { background: #f0f5f9; }
::-webkit-scrollbar-thumb { background: #c5d1db; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a8b8c8; }

/* Page animation */
main {
  animation: calmFade 0.4s ease;
}

@keyframes calmFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Jumbotron / hero */
.jumbotron {
  background: linear-gradient(135deg, #f0f5f9 0%, #e3ecf3 100%);
  border-radius: 16px;
  border: 1px solid var(--calm-border);
}

/* Badges */
.badge {
  font-weight: 500;
  border-radius: 6px;
  padding: 0.35em 0.65em;
}

/* List groups */
.list-group-item {
  border-color: var(--calm-border);
}

/* Progress */
.progress {
  border-radius: 8px;
  background-color: #e8ecf1;
}

/* Blockquote */
blockquote {
  border-left: 4px solid var(--calm-blue);
  background: #f7fafc;
  padding: 1rem 1.25rem;
  border-radius: 0 8px 8px 0;
}