/* ==========================================================================
   Fijate Tools - Calculadora de cubicación de balsas, aljibes y bombeo de pozo
   Hoja de estilos canónica, responsive y accesible
   ========================================================================== */

:root {
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Colores temáticos de ingeniería hidráulica (modo claro) */
  --bg-primary: #f8fafc;
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --text-main: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --color-heading: #0f172a;
  
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --accent: #0ea5e9;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --input-focus: #0284c7;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);

  --svg-earth: #475569;
  --svg-ground-line: #64748b;
  --svg-text: #475569;
  --svg-pozo-bg: #334155;
}

[data-theme="dark"] {
  --bg-primary: #0b0f17;
  --card-bg: #131b26;
  --card-border: #1e293b;
  --text-main: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --color-heading: #ffffff;

  --primary: #38bdf8;
  --primary-hover: #7dd3fc;
  --primary-light: rgba(56, 189, 248, 0.15);
  --accent: #0ea5e9;

  --input-bg: #1e293b;
  --input-border: #334155;
  --input-focus: #38bdf8;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);

  --svg-earth: #1e293b;
  --svg-ground-line: #475569;
  --svg-text: #94a3b8;
  --svg-pozo-bg: #0f172a;
}

/* Reset y estructura canónica */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-main);
  margin: 0;
  padding: 0;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6,
.brand-title,
.section-title,
.hero-title {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: 1.25;
}

.mono,
.val-number,
.stat-val,
code {
  font-family: var(--font-mono);
}

/* Tira de navegación entre herramientas de la suite agrícola */
.suite-nav-strip {
  background: var(--card-bg);
  border-bottom: 1px solid var(--card-border);
  padding: 0.5rem 1rem;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.suite-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.suite-nav-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.suite-links {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.suite-link-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.35rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text-secondary);
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  transition: all 0.2s ease;
}

.suite-link-item:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.suite-link-item.active {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
  font-weight: 600;
}

/* Layout principal */
.main-wrapper.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  flex: 1;
  width: 100%;
}

.tool-with-sidebar {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.tool-main-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Hero card */
.hero-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.hero-header h2 {
  font-size: 1.6rem;
  margin: 0 0 0.5rem 0;
}

.hero-tagline {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.975rem;
  line-height: 1.5;
}

/* Tarjetas de formulario y secciones */
.card-section {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 0.75rem;
}

.section-head h3 {
  margin: 0;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Pestañas de modo o depósito */
.tab-pills-group {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-primary);
  padding: 0.35rem;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  margin-bottom: 1.25rem;
  overflow-x: auto;
}

.tab-pill-btn {
  flex: 1;
  min-height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 6px;
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  transition: all 0.2s;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.tab-pill-btn:hover {
  color: var(--color-heading);
}

.tab-pill-btn.active {
  background: var(--card-bg);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Rejilla de campos y entradas */
.grid-fields-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.grid-fields-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.field-control-wrap {
  display: flex;
  align-items: center;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0 0.75rem;
  min-height: 42px;
  transition: border-color 0.2s;
}

.field-control-wrap:focus-within {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.field-control-wrap input[type="number"],
.field-control-wrap input[type="text"] {
  flex: 1 1 0%;
  width: 0;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 0.5rem 0;
  outline: none;
}

.field-unit-suffix {
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  margin-left: 0.5rem;
  user-select: none;
}

/* Sliders de precisión */
.slider-control {
  width: 100%;
  margin-top: 0.4rem;
  accent-color: var(--primary);
  height: 6px;
  cursor: pointer;
}

/* Desplegables <select> conforme a normas canónicas */
select.fijate-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  min-height: 42px;
  background-color: var(--input-bg);
  color: var(--text-main);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0.5rem 40px 0.5rem 0.75rem;
  font-size: 0.925rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
}

select.fijate-select:focus {
  outline: none;
  border-color: var(--input-focus);
}

select.fijate-select option {
  background-color: var(--card-bg);
  color: var(--text-main);
}

/* Esquema gráfico interactivo SVG */
.visual-schema-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.visual-schema-wrap {
  width: 100%;
  border-radius: 8px;
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.visual-schema-wrap svg {
  width: 100%;
  max-height: 320px;
  display: block;
}

/* Tarjetas de métricas de resultados */
.results-grid-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.metric-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
}

.metric-card.highlight {
  border-color: var(--primary);
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--primary-light) 100%);
}

.metric-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.metric-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.metric-val-main {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.15;
}

.metric-subval {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
}

.metric-footnote {
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.4;
  border-top: 1px solid var(--card-border);
  padding-top: 0.5rem;
}

/* Desglose de bombeo y velocidad */
.desglose-amt,
.desglose-velocidad {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: 0.25rem;
}

.alerta-hidraulica {
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8125rem;
  line-height: 1.4;
}

.alerta-hidraulica.alta {
  background: rgba(239, 68, 68, 0.12);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.alerta-hidraulica.baja {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-estado {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

/* Botones de acción */
.btn-primary {
  min-height: 42px;
  width: 100%;
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: background-color 0.2s;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-outline {
  min-height: 40px;
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
}

.btn-outline:hover {
  background: var(--primary-light);
}

/* Guía técnica y FAQ */
.technical-guide-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.technical-guide-card h3 {
  margin-top: 0;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.technical-guide-card p,
.technical-guide-card li {
  font-size: 0.925rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.faq-item {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1rem;
}

.faq-question {
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.faq-answer {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

/* Modal accesible canónico (cero window.alert) */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 9999;
}

.modal-dialog {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border-bottom: 1px solid var(--card-border);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.2rem;
}

.modal-body {
  padding: 1.25rem;
  font-size: 0.925rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--card-border);
  display: flex;
  justify-content: flex-end;
}

.btn-icon-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
  padding: 0.25rem;
  display: flex;
  align-items: center;
}

/* Clases de utilidad */
.hidden {
  display: none !important;
}

/* Adaptación responsive para dispositivos móviles */
@media (max-width: 768px) {
  .grid-fields-2,
  .grid-fields-3,
  .results-grid-cards {
    grid-template-columns: 1fr;
  }

  .main-wrapper.tool-layout {
    margin: 1rem auto 2rem;
    padding: 0 0.75rem;
  }

  .hero-header h2 {
    font-size: 1.35rem;
  }

  .metric-val-main {
    font-size: 1.55rem;
  }
}