/* ══════════════════════════════════════════════════════════════════════════════
   APEX · Model Leaderboard & Feature Importance
   ══════════════════════════════════════════════════════════════════════════════ */

/* ── Leaderboard ─────────────────────────────────────────────────────────────── */
.leaderboard {
  background: var(--panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  overflow: hidden;
  margin-bottom: 20px;
}

.leaderboard-header {
  padding: 12px 18px;
  background: var(--panel2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text2);
  text-transform: uppercase;
  gap: 10px;
}

.lb-row {
  display: grid;
  grid-template-columns: 36px 1fr 72px 72px 72px 72px 105px;
  gap: 8px;
  align-items: center;
  padding: 11px 18px;
  border-bottom: 1px solid var(--border);
  transition: background var(--trans);
}
.lb-row:last-child { border-bottom: none; }
.lb-row:hover { background: var(--bg3); }
.lb-row.top { background: rgba(0,229,200,0.04); }

.lb-rank {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text3);
}
.lb-rank.gold { color: var(--gold); font-weight: 700; }

.lb-model {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--white);
  font-weight: 500;
}

.lb-metric {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text2);
  text-align: right;
}
.lb-header {
  font-size: 10px;
  color: var(--text3);
  text-align: right;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.lb-bar-col {
  display: flex;
  align-items: center;
  gap: 6px;
}
.lb-bar {
  flex: 1;
  height: 6px;
  background: var(--bg3);
  border-radius: 3px;
  overflow: hidden;
}
.lb-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--teal2));
  border-radius: 3px;
  transition: width 1s var(--spring);
}
.lb-bar-fill.rf  { background: linear-gradient(90deg, var(--teal), #00b8a0); }
.lb-bar-fill.nn  { background: linear-gradient(90deg, var(--blue), #2d7fd6); }
.lb-bar-fill.svm { background: linear-gradient(90deg, var(--gold), #c8860a); }
.lb-bar-fill.dt  { background: linear-gradient(90deg, var(--green), #009948); }
.lb-bar-fill.lr  { background: linear-gradient(90deg, #a061f0, #7a40c8); }
.lb-bar-fill.knn { background: linear-gradient(90deg, var(--red), #c82040); }

/* ── Feature Importance ──────────────────────────────────────────────────────── */
.feat-imp {
  background: var(--panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 18px;
  transition: border-color var(--trans);
}
.feat-imp:hover { border-color: var(--border2); }

.feat-imp h3 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.feat-imp h3 .badge {
  font-size: 10px;
  color: var(--teal2);
  background: var(--teal-dim);
  border: 1px solid rgba(0,229,200,0.2);
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 1px;
}

.feat-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  padding: 3px 0;
  transition: background var(--trans);
  border-radius: 4px;
}
.feat-row:hover {
  background: rgba(0,229,200,0.03);
}

.feat-name {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text2);
  width: 190px;
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.feat-track {
  flex: 1;
  height: 8px;
  background: var(--bg3);
  border-radius: 4px;
  overflow: hidden;
}
.feat-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--teal), #00b8a0);
  transition: width 1.2s cubic-bezier(0.34,1.2,0.64,1);
}
.feat-score {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--teal);
  min-width: 40px;
  text-align: right;
}

/* ── Regression Cards Grid ───────────────────────────────────────────────────── */
.regression-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.regression-card {
  background: var(--panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 18px;
  overflow: hidden;
  transition: all var(--trans);
}
.regression-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.regression-card .reg-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}
.regression-card .reg-score {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 700;
}
.regression-card .reg-info {
  font-size: 12px;
  color: var(--text2);
  margin-top: 4px;
}
.regression-card .reg-detail {
  font-size: 11px;
  color: var(--text3);
  margin-top: 6px;
}

/* ── Feature Importance Grid ─────────────────────────────────────────────────── */
.feat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── Models Dashboard Cards ─────────────────────────────────────────────────── */
.model-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.model-card {
  background: var(--panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 24px;
  transition: all var(--trans);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.model-card:hover {
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.model-card.rf { border-top: 3px solid var(--teal); }
.model-card.nn { border-top: 3px solid var(--blue); }
.model-card.svm { border-top: 3px solid var(--gold); }
.model-card.lr { border-top: 3px solid #a061f0; }
.model-card.dt { border-top: 3px solid var(--green); }
.model-card.knn { border-top: 3px solid var(--red); }

.model-card-head h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 4px;
}

.model-card-overview {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.5;
  margin-bottom: 12px;
}

.model-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  background: var(--bg3);
  padding: 12px;
  border-radius: 8px;
}

.mm-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mm-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.mm-val {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
}

.model-pros-cons {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
}

.mpc-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.mpc-icon.pro { color: var(--green); }
.mpc-icon.con { color: var(--red); }
.mpc-text { color: var(--text2); line-height: 1.4; }


/* ── Split Analysis ─────────────────────────────────────────────────────────────────────── */
.split-chart-card {
  background: var(--panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 24px;
  margin-bottom: 20px;
}
.split-chart-card h3 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.split-chart-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.split-chart-wrap {
  position: relative;
  height: 300px;
  width: 100%;
}
.split-finding {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.sf-item {
  padding: 10px 14px;
  background: var(--bg3);
  border-radius: 6px;
  border-left: 3px solid var(--teal);
  font-size: 12px;
  color: var(--text2);
}
.sf-item strong {
  display: block;
  font-family: var(--font-head);
  font-size: 13px;
  color: var(--white);
  margin-bottom: 2px;
}

/* ── CV Results Table ────────────────────────────────────────────────────────────── */
.cv-card {
  background: var(--panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 24px;
  margin-bottom: 20px;
  overflow: hidden;
}
.cv-card h3 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.cv-card-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.cv-table {
  width: 100%;
  border-collapse: collapse;
}
.cv-table th {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--panel2);
}
.cv-table th:nth-child(3),
.cv-table th:nth-child(4) { text-align: right; }
.cv-row {
  border-bottom: 1px solid var(--border);
  transition: background var(--trans);
}
.cv-row:last-child { border-bottom: none; }
.cv-row:hover { background: var(--bg3); }
.cv-rank, .cv-model, .cv-mean, .cv-std, .cv-bar-cell {
  padding: 11px 12px;
  font-size: 13px;
}
.cv-rank { font-family: var(--font-mono); font-size: 12px; color: var(--text3); width: 40px; }
.cv-model { font-family: var(--font-body); font-weight: 500; }
.cv-mean {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
  text-align: right;
  white-space: nowrap;
}
.cv-std {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text3);
  text-align: right;
  white-space: nowrap;
}
.cv-bar-cell { min-width: 140px; }
.cv-bar-track {
  height: 6px;
  background: var(--bg3);
  border-radius: 3px;
  overflow: hidden;
}
.cv-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 1.2s cubic-bezier(0.34,1.2,0.64,1);
  background: var(--teal);
}
.cv-insight {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(0,229,200,0.04);
  border: 1px solid var(--border);
  border-left: 3px solid var(--teal);
  border-radius: 6px;
  font-size: 12px;
  color: var(--text2);
  line-height: 1.7;
  font-family: var(--font-mono);
}

/* ── Confusion Matrix ──────────────────────────────────────────────────────────── */
.cm-card {
  background: var(--panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 24px;
  margin-bottom: 20px;
}
.cm-card h3 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 4px;
  display: flex; align-items: center; gap: 10px;
}
.cm-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.cm-grid-wrap {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  flex-wrap: wrap;
}
.cm-matrix {
  flex: 0 0 auto;
}
.cm-matrix table {
  border-collapse: collapse;
}
.cm-matrix th {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 8px 10px;
  text-align: center;
}
.cm-matrix th.cm-corner { background: none; }
.cm-matrix th.cm-pred-header {
  color: var(--text3);
  font-size: 9px;
  border-bottom: 1px solid var(--border);
}
.cm-cell {
  width: 70px;
  height: 56px;
  text-align: center;
  vertical-align: middle;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 4px;
  cursor: default;
  position: relative;
  transition: all 0.2s ease;
}
.cm-cell:hover {
  transform: scale(1.08);
  z-index: 2;
  box-shadow: 0 4px 14px rgba(0,0,0,0.5);
  border-color: var(--white);
}
.cm-cell .cm-pct {
  display: block;
  font-size: 9px;
  font-weight: 400;
  color: rgba(255,255,255,0.6);
  margin-top: 2px;
}
.cm-cell.diag { border: 2px solid rgba(0,229,200,0.3); }

.cm-sidebar {
  flex: 1;
  min-width: 240px;
}
.cm-insight-box {
  padding: 14px 16px;
  background: var(--bg3);
  border-radius: 8px;
  border-left: 3px solid var(--teal);
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--text2);
  line-height: 1.7;
}
.cm-insight-box strong { color: var(--white); }
.cm-insight-box.warn { border-left-color: var(--gold); }
.cm-insight-box.good { border-left-color: var(--green); }

.cm-f1-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 14px;
}
.cm-f1-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg3);
  border-radius: 6px;
}
.cm-f1-cls {
  width: 26px; height: 26px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head);
  font-size: 13px; font-weight: 700;
  color: var(--white);
}
.cm-f1-cls.A { background: rgba(0,229,200,0.2); }
.cm-f1-cls.B { background: rgba(77,159,255,0.2); }
.cm-f1-cls.C { background: rgba(240,165,0,0.2); }
.cm-f1-cls.D { background: rgba(0,200,80,0.2); }
.cm-f1-val {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
}
.cm-f1-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.5px;
}
.cm-f1-bar {
  flex: 1; height: 5px;
  background: var(--bg3);
  border-radius: 3px;
  overflow: hidden;
}
.cm-f1-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 1s cubic-bezier(0.34,1.2,0.64,1);
}

/* ── View Details Button ─────────────────────────────────────────────────────── */
.view-details-btn {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text3);
  padding: 6px 14px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: all var(--trans);
  align-self: flex-start;
  margin-top: 8px;
}

.view-details-btn:hover {
  background: var(--panel2);
  border-color: var(--teal);
  color: var(--white);
  transform: translateX(4px);
}

.model-card.lr-reg { border-top: 3px solid var(--blue); }

/* ── Model Intelligence Modal (Feature 03) ──────────────────────────────────── */
.details-modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: rgba(4,6,12,0.85);
  backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.details-modal.open {
  opacity: 1;
}

.details-dialog {
  width: 100%;
  max-width: 1000px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  display: flex;
  flex-direction: column;
  box-shadow: 0 40px 100px rgba(0,0,0,0.8);
  transform: translateY(30px) scale(0.98);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.details-modal.open .details-dialog {
  transform: translateY(0) scale(1);
}

.details-header {
  padding: 20px 30px;
  background: var(--panel2);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 15px;
}

.header-left h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.modal-tag {
  background: rgba(0,229,200,0.1);
  color: var(--teal);
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.details-body {
  padding: 30px;
  overflow-y: auto;
  max-height: 80vh;
}

.details-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 30px;
}

.details-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.analysis-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.analysis-box h4 {
  font-family: var(--font-head);
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.chart-container {
  height: 220px;
  position: relative;
}

.info-box {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

.info-box.accent {
  background: rgba(77,159,255,0.05);
  border-color: rgba(77,159,255,0.2);
}

.info-box h5 {
  font-family: var(--font-head);
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.params-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.param-item {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.param-item span { color: var(--text3); font-family: var(--font-mono); }
.param-item strong { color: var(--white); }

.split-stats {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.split-stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}

.split-stat-row span { color: var(--text2); }
.split-stat-row strong { font-family: var(--font-mono); color: var(--teal); }

/* ── Predict Tab Dual Card (Feature 04) ─────────────────────────────────────── */
.jump-card-dual {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.jump-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  flex: 1;
}

.jump-metric {
  padding: 0 20px;
}

.jump-metric.divider {
  border-left: 1px solid var(--border);
}

.jump-metric .jlabel {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.jump-metric .jump-val {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 700;
  color: var(--white);
}

.jump-metric .unit {
  font-size: 14px;
  color: var(--text3);
  margin-left: 4px;
}