/* ============================================================
   CardioPredict AI  –  Custom Stylesheet
   Healthcare-grade UI: clean whites, deep navy, clinical blue
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=DM+Serif+Display&display=swap');

/* ── Root Variables ───────────────────────────────────── */
:root {
  --primary:   #1e3a5f;
  --secondary: #2563eb;
  --accent:    #0ea5e9;
  --success:   #22c55e;
  --warning:   #f59e0b;
  --danger:    #ef4444;
  --surface:   #f8fafc;
  --card-bg:   #ffffff;
  --border:    #e2e8f0;
  --text:      #1e293b;
  --muted:     #64748b;
  --sidebar-w: 260px;
  --radius:    12px;
  --shadow:    0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 10px 30px rgba(0,0,0,.08);
}

/* ── Base ─────────────────────────────────────────────── */
body {
  font-family: 'Inter', system-ui, sans-serif;
  background:  var(--surface);
  color:       var(--text);
  font-size:   14px;
  line-height: 1.6;
}

/* ── Sidebar ──────────────────────────────────────────── */
.main-sidebar {
  background: var(--primary) !important;
  box-shadow: 2px 0 20px rgba(0,0,0,.15);
}

.main-sidebar .brand-link {
  background: rgba(0,0,0,.2) !important;
  border-bottom: 1px solid rgba(255,255,255,.1) !important;
  padding: 16px 20px !important;
}

.brand-text {
  font-family: 'DM Serif Display', serif !important;
  font-size: 17px !important;
  color: #fff !important;
  letter-spacing: .3px;
}

.sidebar-menu > li > a {
  color: rgba(255,255,255,.75) !important;
  font-weight: 500;
  font-size: 13.5px;
  padding: 10px 20px !important;
  border-radius: 0 !important;
  transition: all .18s ease;
}

.sidebar-menu > li > a:hover,
.sidebar-menu > li.active > a {
  color: #fff !important;
  background: rgba(255,255,255,.12) !important;
  border-left: 3px solid var(--accent) !important;
}

.sidebar-menu > li > a > .nav-icon {
  color: var(--accent) !important;
  width: 20px;
}

/* ── Content Wrapper ──────────────────────────────────── */
.content-wrapper, .main-footer {
  background: var(--surface) !important;
}

.content-header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: 22px;
  color: var(--primary);
  font-weight: 400;
}

/* ── Cards ────────────────────────────────────────────── */
.card, .box {
  border-radius: var(--radius) !important;
  border: 1px solid var(--border) !important;
  box-shadow: var(--shadow) !important;
  background: var(--card-bg) !important;
  overflow: hidden;
}

.card-header, .box-header {
  background: var(--card-bg) !important;
  border-bottom: 1px solid var(--border) !important;
  padding: 16px 20px !important;
}

.card-title, .box-title {
  font-weight: 600 !important;
  font-size: 14px !important;
  color: var(--primary) !important;
  letter-spacing: .2px;
}

.card-body, .box-body {
  padding: 20px !important;
}

/* ── Value Boxes ──────────────────────────────────────── */
.value-box {
  border-radius: var(--radius) !important;
  border: none !important;
  box-shadow: var(--shadow-md) !important;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}

.value-box:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,.12) !important;
}

.value-box .value-box-value {
  font-size: 30px !important;
  font-weight: 700 !important;
  font-family: 'DM Serif Display', serif;
}

.value-box .value-box-subtitle {
  font-size: 12px !important;
  font-weight: 500 !important;
  opacity: .85;
  letter-spacing: .5px;
  text-transform: uppercase;
}

/* ── Buttons ──────────────────────────────────────────── */
.btn-primary {
  background: var(--secondary) !important;
  border-color: var(--secondary) !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  font-size: 13.5px !important;
  padding: 9px 22px !important;
  transition: all .18s ease !important;
  letter-spacing: .3px;
}

.btn-primary:hover {
  background: var(--primary) !important;
  border-color: var(--primary) !important;
  box-shadow: 0 4px 12px rgba(37,99,235,.3) !important;
}

.btn-success {
  border-radius: 8px !important;
  font-weight: 600 !important;
}

/* ── Tables ───────────────────────────────────────────── */
.dataTables_wrapper {
  font-size: 13px;
}

table.dataTable thead th {
  background: var(--surface) !important;
  color: var(--primary) !important;
  font-weight: 600 !important;
  border-bottom: 2px solid var(--border) !important;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

table.dataTable tbody tr:hover {
  background: rgba(14,165,233,.05) !important;
}

/* ── Tabs ─────────────────────────────────────────────── */
.nav-tabs .nav-link {
  color: var(--muted) !important;
  font-weight: 500;
  font-size: 13.5px;
  border-radius: 8px 8px 0 0 !important;
  border: 1px solid transparent !important;
  transition: all .15s ease;
}

.nav-tabs .nav-link.active {
  color: var(--secondary) !important;
  border-color: var(--border) var(--border) #fff !important;
  background: #fff !important;
}

/* ── Risk Badge ───────────────────────────────────────── */
.risk-badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .3px;
}

/* ── Prediction Panel ─────────────────────────────────── */
.prediction-panel {
  background: linear-gradient(135deg, var(--primary) 0%, #2563eb 100%);
  color: white;
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.prediction-panel .prob-number {
  font-family: 'DM Serif Display', serif;
  font-size: 52px;
  line-height: 1;
  color: #fff;
}

.prediction-panel .prob-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: .75;
  margin-top: 4px;
}

/* ── SHAP Bars ────────────────────────────────────────── */
.shap-positive { color: #ef4444; }
.shap-negative { color: #22c55e; }

/* ── Section Headers ──────────────────────────────────── */
.section-header {
  font-family: 'DM Serif Display', serif;
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 6px;
  font-weight: 400;
}

.section-sub {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 20px;
}

/* ── Metric Cards ─────────────────────────────────────── */
.metric-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform .2s ease;
}

.metric-card:hover { transform: translateY(-2px); }

.metric-card .metric-value {
  font-family: 'DM Serif Display', serif;
  font-size: 28px;
  color: var(--secondary);
  line-height: 1;
}

.metric-card .metric-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-top: 6px;
  font-weight: 500;
}

/* ── Recommendation Box ───────────────────────────────── */
.rec-box {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: var(--radius);
  padding: 18px 22px;
}

.rec-box.high {
  background: #fff5f5;
  border-color: #fecaca;
}

.rec-box.moderate {
  background: #fff7ed;
  border-color: #fed7aa;
}

.rec-box ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.rec-box ul li {
  margin-bottom: 6px;
  font-size: 13.5px;
  color: var(--text);
}

/* ── Footer ───────────────────────────────────────────── */
.main-footer {
  font-size: 12px !important;
  color: var(--muted) !important;
  border-top: 1px solid var(--border) !important;
  background: var(--card-bg) !important;
}

/* ── Loader ───────────────────────────────────────────── */
.shiny-spinner-output-container .load-container {
  margin-top: 40px;
}

/* ── Input styling ────────────────────────────────────── */
.form-control {
  border-radius: 8px !important;
  border-color: var(--border) !important;
  font-size: 13.5px !important;
}

.form-control:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px rgba(14,165,233,.15) !important;
}

select.form-control {
  height: 36px !important;
}

/* ── Legend pill ──────────────────────────────────────── */
.legend-pill {
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 768px) {
  .value-box .value-box-value { font-size: 22px !important; }
  .prediction-panel .prob-number { font-size: 38px; }
}