/* ==========================================================================
   lineasat.cl - Plataforma de Límites Térmicos de Conductores Aéreos
   Estándar IEEE 738 / Coordinador Eléctrico Nacional (CEN)
   © 2026 Desarrollado por repositorIA
   ========================================================================== */

:root {
  --bg-primary: #0b1320;
  --bg-secondary: #111e33;
  --bg-card: #162642;
  --bg-card-hover: #1c3054;
  --border-color: #243b61;
  --border-focus: #38bdf8;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-cyan: #38bdf8;
  --accent-blue: #2563eb;
  --accent-teal: #14b8a6;
  --accent-green: #22c55e;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background-color: rgba(17, 30, 51, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  font-size: 28px;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
}

.brand-title span {
  color: var(--accent-cyan);
}

.brand-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.header-badges {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-link-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.nav-link-back:hover {
  color: #fff;
  border-color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
}

.norm-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 4px 10px;
  border-radius: 20px;
}

/* Layout Principal */
.app-container {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 20px;
  padding: 20px;
  flex: 1;
  max-width: 1750px;
  margin: 0 auto;
  width: 100%;
}

@media (max-width: 1100px) {
  .app-container {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Evita que tablas y pestañas anchas ensanchen la página (scroll horizontal) */
.main-content, .sidebar { min-width: 0; }

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 8px;
}

.card-title span.icon {
  margin-right: 6px;
}

/* Formularios */
.form-group {
  margin-bottom: 12px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
}

label span.unit {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  padding: 7px 10px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #fff;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #38bdf8, #1d4ed8);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--accent-cyan);
}

.btn-success {
  background: linear-gradient(135deg, #16a34a, #15803d);
  color: #fff;
}

.btn-success:hover {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.btn-block {
  width: 100%;
}

/* Tabs de Contenido */
.tabs-nav {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 18px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.tab-btn {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: #fff;
  background: var(--bg-card);
  border-bottom: 2px solid var(--accent-cyan);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* KPI Cards Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.kpi-card {
  background: linear-gradient(145deg, var(--bg-card), var(--bg-card-hover));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-cyan);
}

.kpi-card.kpi-summer::before { background: #f59e0b; }
.kpi-card.kpi-winter::before { background: #38bdf8; }
.kpi-card.kpi-night::before  { background: #a855f7; }
.kpi-card.kpi-crit::before   { background: #ef4444; }

.kpi-title {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.kpi-value {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #fff;
  line-height: 1.1;
}

.kpi-unit {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-left: 4px;
}

.kpi-sub {
  font-size: 0.74rem;
  color: var(--text-dim);
  margin-top: 6px;
}

/* Gráficos */
.chart-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 20px;
  position: relative;
  height: 380px;
}

/* Barra de Herramientas de Matrices y Tablas */
.matrix-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  margin-bottom: 12px;
}

.matrix-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.matrix-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.02em;
}

.matrix-badge.summer {
  background: rgba(245, 158, 11, 0.18);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.matrix-badge.winter {
  background: rgba(56, 189, 248, 0.18);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.4);
}

.matrix-badge.night {
  background: rgba(168, 85, 247, 0.18);
  color: #a855f7;
  border: 1px solid rgba(168, 85, 247, 0.4);
}

.matrix-badge.transient {
  background: rgba(239, 68, 68, 0.18);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.matrix-subinfo {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.matrix-subinfo strong {
  color: #fff;
}

.matrix-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* Selector de Límite de Temperatura del Conductor */
.tc-limit-control {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(234, 179, 8, 0.35);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
}

.sel-tc-max {
  background: transparent;
  color: #fde047;
  border: none;
  font-size: 0.74rem;
  font-weight: 700;
  cursor: pointer;
  outline: none;
}

.sel-tc-max option {
  background: #0f172a;
  color: #fff;
}

/* Control Segmentado (Pasos 1°C vs Pasos 5°C) */
.segmented-control {
  display: inline-flex;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.seg-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.seg-btn:hover {
  color: #fff;
}

.seg-btn.active {
  background: var(--accent-cyan);
  color: #0b1329;
  font-weight: 700;
  box-shadow: 0 1px 4px rgba(56, 189, 248, 0.4);
}

/* Accesos rápidos de Temperatura Ambiente */
.quick-temps {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.qt-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-right: 2px;
}

.pill-temp {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.pill-temp:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: var(--accent-cyan);
  color: #fff;
  transform: translateY(-1px);
}

.btn-toggle-heat {
  font-size: 0.74rem;
  padding: 4px 10px;
}

.btn-toggle-heat.active {
  background: rgba(239, 68, 68, 0.25);
  border-color: #ef4444;
  color: #fca5a5;
}

/* Tablas y Matrices Premium */
.table-responsive {
  overflow-x: auto;
  overflow-y: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  margin-bottom: 16px;
  max-height: 560px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  position: relative;
}

/* Scrollbar estilizado */
.table-responsive::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.table-responsive::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.3);
}
.table-responsive::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}
.table-responsive::-webkit-scrollbar-thumb:hover {
  background: rgba(56, 189, 248, 0.4);
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-align: right;
}

.data-table th,
.data-table td {
  padding: 6px 9px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  white-space: nowrap;
  transition: background-color 0.15s ease;
}

/* Encabezados Superiores Fijos (Sticky Header) */
.data-table thead th {
  background: linear-gradient(180deg, #1b3a2a 0%, #142a1f 100%);
  color: #86efac;
  font-weight: 700;
  font-size: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 2px solid #22c55e;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

/* Columna Izquierda Fija (Sticky Ta) */
.data-table th.col-fixed {
  position: sticky;
  left: 0;
  top: 0;
  background: linear-gradient(180deg, #142a1f 0%, #0d1e16 100%);
  color: #38bdf8;
  font-weight: 800;
  text-align: center;
  z-index: 30;
  border-right: 2px solid rgba(56, 189, 248, 0.3);
  min-width: 90px;
}

.data-table td.col-fixed {
  position: sticky;
  left: 0;
  background: #0d1527;
  color: #e2e8f0;
  font-weight: 700;
  text-align: center;
  z-index: 15;
  border-right: 2px solid rgba(56, 189, 248, 0.25);
  box-shadow: 2px 0 6px rgba(0, 0, 0, 0.25);
}

.ta-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
}

/* Resaltado de Fila de Temperatura de Diseño */
.data-table tbody tr.row-design {
  background-color: rgba(234, 179, 8, 0.12) !important;
}

.data-table tbody tr.row-design td {
  border-top: 1px solid rgba(234, 179, 8, 0.4);
  border-bottom: 1px solid rgba(234, 179, 8, 0.4);
}

.data-table tbody tr.row-design td.col-fixed {
  background: #1a1e29 !important;
  color: #facc15 !important;
  font-weight: 800;
}

.tag-design {
  display: inline-block;
  font-size: 0.62rem;
  background: #facc15;
  color: #0b1329;
  font-weight: 800;
  padding: 1px 4px;
  border-radius: 3px;
  margin-left: 4px;
  letter-spacing: 0.02em;
}

/* Fila resaltada momentáneamente por el salto rápido */
.data-table tbody tr.row-flash {
  animation: rowPulse 1.8s ease-out;
}

@keyframes rowPulse {
  0% { background-color: rgba(56, 189, 248, 0.4); }
  100% { background-color: transparent; }
}

/* Hover de Filas */
.data-table tbody tr:hover {
  background-color: rgba(56, 189, 248, 0.08);
}

.data-table tbody tr:hover td.col-fixed {
  background-color: #13223f;
  color: #38bdf8;
}

/* Celdas con cero */
.data-table td.val-zero {
  color: rgba(148, 163, 184, 0.35);
}

/* Valores Altos */
.data-table td.val-high {
  color: #4ade80;
  font-weight: 600;
}

/* Columna de Límite de Temperatura del Conductor (ej. 75°C) */
.data-table thead th.th-tc-limit {
  background: linear-gradient(180deg, #15803d 0%, #166534 100%) !important;
  color: #fef08a !important;
  border-bottom: 3px solid #eab308 !important;
}

.tag-tc-limit {
  display: block;
  font-size: 0.58rem;
  background: #eab308;
  color: #0b1329;
  font-weight: 800;
  padding: 1px 3px;
  border-radius: 2px;
  margin-top: 2px;
  letter-spacing: 0.02em;
}

.data-table td.col-tc-limit {
  border-left: 1px dashed rgba(234, 179, 8, 0.45);
  border-right: 1px dashed rgba(234, 179, 8, 0.45);
  background-color: rgba(234, 179, 8, 0.04);
}

/* Heatmap (Mapa de Calor de Ampacidad) */
.heat-mode td.heat-0 { color: rgba(148, 163, 184, 0.3); background: rgba(0, 0, 0, 0.15); }
.heat-mode td.heat-1 { color: #93c5fd; background: rgba(59, 130, 246, 0.08); }
.heat-mode td.heat-2 { color: #86efac; background: rgba(34, 197, 94, 0.12); }
.heat-mode td.heat-3 { color: #fde047; background: rgba(234, 179, 8, 0.16); font-weight: 600; }
.heat-mode td.heat-4 { color: #fb923c; background: rgba(249, 115, 22, 0.22); font-weight: 700; }
.heat-mode td.heat-5 { color: #f87171; background: rgba(239, 68, 68, 0.28); font-weight: 800; }

/* Tarjetas de 3 Puntos */
.three-points-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.point-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: transform 0.2s, border-color 0.2s;
}

.point-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

.point-card.is-bottleneck {
  border-color: var(--accent-red);
  box-shadow: 0 0 14px rgba(239, 68, 68, 0.25);
}

.point-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.point-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}

.badge-bottleneck {
  background: rgba(239, 68, 68, 0.18);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 700;
}

.point-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  padding: 4px 0;
}

.point-row span.label {
  color: var(--text-muted);
}

.point-row span.value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: #fff;
}

/* Memoria de Cálculo & Fórmulas */
.formula-box {
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent-cyan);
  padding: 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  font-size: 0.85rem;
}

.formula-box code {
  font-family: var(--font-mono);
  color: var(--accent-amber);
}

/* Footer */
.app-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 14px 24px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: auto;
}

.app-footer a {
  color: var(--accent-cyan);
  text-decoration: none;
}

/* Diálogo de Impresión (PDF) */
@media print {
  body {
    background: #fff !important;
    color: #000 !important;
  }
  .app-header,
  .sidebar,
  .tabs-nav,
  .btn,
  .app-footer {
    display: none !important;
  }
  .app-container {
    display: block !important;
    padding: 0 !important;
  }
  .card, .kpi-card, .table-responsive {
    border: 1px solid #ccc !important;
    background: #fff !important;
    color: #000 !important;
    box-shadow: none !important;
  }
  .data-table th, .data-table td {
    color: #000 !important;
    border: 1px solid #ddd !important;
  }
}


/* Transitorio: nota de referencia y celdas especiales (criterio CEN) */
.transient-note { font-size: 0.78rem; color: var(--text-dim); margin: 8px 0 10px; line-height: 1.5; }
.transient-note strong { color: var(--text-main, #f1f5f9); }
.data-table td.val-cooling { color: #fbbf24; }
.data-table td.val-cooling::after { content: " *"; color: #fbbf24; }
.data-table td.val-nosol { color: var(--text-dim); }
#transientCaseControl { margin-right: 8px; }

/* Encabezado en pantallas angostas: los botones bajan de línea en vez de ensanchar la página */
@media (max-width: 760px) {
  .app-header { flex-wrap: wrap; gap: 10px; padding: 12px 16px; }
  .header-badges { flex-wrap: wrap; gap: 0.5rem; }
  .app-container { padding: 16px; }
}