/* ==========================================================================
   ESTILOS OFICIALES: CORRECTOR DIAGNÓSTICO MATEMÁTICA 6.º DE PRIMARIA
   ========================================================================== */

:root {
  --primary: #1e3a8a;
  --primary-light: #3b82f6;
  --primary-dark: #172554;
  --comp1: #1e40af;
  --comp2: #4338ca;
  --comp3: #0369a1;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  
  --nivel-e: #b45309;
  --nivel-e-bg: #fef3c7;
  --nivel-a: #1d4ed8;
  --nivel-a-bg: #dbeafe;
  --nivel-s: #047857;
  --nivel-s-bg: #d1fae5;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1380px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* ================= HEADER ================= */
.app-header {
  background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #0369a1 100%);
  color: #ffffff;
  padding: 1.75rem 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.header-title-block h1 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-title-block p {
  color: #bfdbfe;
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

.header-badges {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge-gold {
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.badge-white {
  background-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ================= TABS ================= */
.nav-tabs {
  display: flex;
  gap: 0.5rem;
  background-color: #e2e8f0;
  padding: 0.35rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

.tab-btn {
  flex: 1;
  min-width: 140px;
  background: transparent;
  border: none;
  padding: 0.75rem 1rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.5);
}

.tab-btn.active {
  background-color: #ffffff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* ================= CARDS & SECTIONS ================= */
.card {
  background-color: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

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

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ================= FORM ELEMENTS ================= */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

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

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-group input,
.form-group select {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  font-size: 0.95rem;
  color: var(--text-main);
  background-color: #ffffff;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* ================= BUTTONS ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #1e40af;
  box-shadow: var(--shadow-md);
}

.btn-success {
  background-color: #059669;
  color: #ffffff;
}

.btn-success:hover {
  background-color: #047857;
  box-shadow: var(--shadow-md);
}

.btn-excel {
  background: linear-gradient(135deg, #15803d 0%, #166534 100%);
  color: #ffffff;
  font-size: 1rem;
  padding: 0.8rem 1.5rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(21, 128, 61, 0.3);
}

.btn-excel:hover {
  background: linear-gradient(135deg, #166534 0%, #14532d 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(21, 128, 61, 0.4);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid #cbd5e1;
  color: var(--text-main);
}

.btn-outline:hover {
  background-color: #f1f5f9;
}

.btn-danger-outline {
  background-color: transparent;
  border: 1px solid #fca5a5;
  color: #dc2626;
}

.btn-danger-outline:hover {
  background-color: #fef2f2;
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
}

/* ================= CONFIGURACIÓN DE PREGUNTAS ================= */
.config-questions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.question-config-card {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  background-color: #ffffff;
  transition: all 0.2s ease;
}

.question-config-card.is-open {
  border-color: #f59e0b;
  background-color: #fffbeb;
}

.question-config-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
}

.q-badge {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--primary);
}

.q-type-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
}

.q-indicator-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

/* Selector de opción múltiple */
.option-select-group {
  display: flex;
  gap: 0.35rem;
}

.opt-btn {
  flex: 1;
  padding: 0.45rem 0;
  text-align: center;
  border: 1px solid #cbd5e1;
  background-color: #ffffff;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.15s;
}

.opt-btn:hover {
  background-color: #f1f5f9;
}

.opt-btn.selected {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* ================= FORMULARIO DE CORRECCIÓN ================= */
.competencia-banner {
  background-color: #eff6ff;
  border-left: 4px solid var(--primary);
  padding: 0.75rem 1rem;
  margin: 1.5rem 0 1rem 0;
  border-radius: 0 8px 8px 0;
}

.competencia-banner h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
}

.competencia-banner p {
  font-size: 0.82rem;
  color: #1e40af;
  margin-top: 0.15rem;
}

.questions-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.correction-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  gap: 1rem;
  flex-wrap: wrap;
}

.correction-item-row:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-sm);
}

.item-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  max-width: 480px;
}

.item-header-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.item-num {
  font-weight: 800;
  font-size: 1rem;
  color: var(--text-main);
}

.item-tag-open {
  background-color: #fef3c7;
  color: #b45309;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.item-tag-mc {
  background-color: #e0f2fe;
  color: #0369a1;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.item-ind-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Opciones de respuesta para el estudiante */
.student-answer-selector {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.ans-btn {
  padding: 0.55rem 1rem;
  min-width: 44px;
  border: 1px solid #cbd5e1;
  background-color: #f8fafc;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.15s ease;
  color: var(--text-main);
}

.ans-btn:hover {
  background-color: #e2e8f0;
}

.ans-btn.selected {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 2px 4px rgba(30, 58, 138, 0.25);
}

/* Botones para preguntas abiertas */
.ans-open-btn {
  padding: 0.55rem 1.1rem;
  border: 1px solid #cbd5e1;
  background-color: #f8fafc;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.ans-open-btn.correct.selected {
  background-color: #059669;
  color: #ffffff;
  border-color: #059669;
  box-shadow: 0 2px 4px rgba(5, 150, 105, 0.25);
}

.ans-open-btn.incorrect.selected {
  background-color: #dc2626;
  color: #ffffff;
  border-color: #dc2626;
  box-shadow: 0 2px 4px rgba(220, 38, 38, 0.25);
}

.ans-open-btn.nr.selected {
  background-color: #64748b;
  color: #ffffff;
  border-color: #64748b;
}

/* ================= RESULTADO INDIVIDUAL MODAL ================= */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 1rem;
}

.modal-content {
  background-color: #ffffff;
  border-radius: var(--radius);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 1.75rem;
}

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

.result-card-ind {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 0.6rem;
  background-color: #f8fafc;
}

.result-card-ind .ind-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  max-width: 70%;
}

.result-card-ind .ind-scores {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pill-level {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.85rem;
  text-align: center;
}

.pill-e {
  background-color: var(--nivel-e-bg);
  color: var(--nivel-e);
  border: 1px solid #fde68a;
}

.pill-a {
  background-color: var(--nivel-a-bg);
  color: var(--nivel-a);
  border: 1px solid #bfdbfe;
}

.pill-s {
  background-color: var(--nivel-s-bg);
  color: var(--nivel-s);
  border: 1px solid #a7f3d0;
}

/* ================= TABLA DE MATRIZ INSTITUCIONAL ================= */
.matrix-wrapper {
  overflow-x: auto;
  border: 1px solid #94a3b8;
  border-radius: 8px;
  background-color: #ffffff;
  box-shadow: var(--shadow-sm);
  margin-top: 1rem;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: center;
  min-width: 1200px;
}

.matrix-table th,
.matrix-table td {
  border: 1px solid #cbd5e1;
  padding: 0.45rem 0.35rem;
}

/* Niveles de encabezados */
.matrix-table th.th-comp1 {
  background-color: #1e3a8a;
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
}

.matrix-table th.th-comp2 {
  background-color: #1e40af;
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
}

.matrix-table th.th-comp3 {
  background-color: #0369a1;
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
}

.matrix-table th.th-ind {
  background-color: #dbeafe;
  color: #1e293b;
  font-size: 0.74rem;
  font-weight: 700;
  max-width: 130px;
}

.matrix-table th.th-eas {
  background-color: #f1f5f9;
  color: #0f172a;
  font-weight: 800;
  font-size: 0.75rem;
  width: 38px;
}

.matrix-table th.th-fixed {
  background-color: #1e3a8a;
  color: #ffffff;
  font-weight: 700;
}

.matrix-table td.td-name {
  text-align: left;
  font-weight: 600;
  padding-left: 0.75rem;
  white-space: nowrap;
  max-width: 250px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.matrix-table td.val-active {
  font-weight: 800;
  color: #0f172a;
  background-color: #ffffff;
}

.matrix-table td.val-zero {
  color: #94a3b8;
  font-size: 0.75rem;
}

.matrix-table tr:nth-child(even) td {
  background-color: #f8fafc;
}

.matrix-table tr:hover td {
  background-color: #eff6ff;
}

/* Fila de Totales */
.matrix-table tr.tr-total td {
  background-color: #fef3c7 !important;
  color: #1e293b;
  font-weight: 800;
  font-size: 0.85rem;
  border-top: 2px solid #0f172a;
  border-bottom: 2px solid #0f172a;
}

/* ================= STATS CARDS ================= */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}

.stat-card-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-card-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 0.25rem;
}

/* ================= ALERTAS ================= */
.alert {
  padding: 0.85rem 1.15rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-info {
  background-color: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.alert-warning {
  background-color: #fffbeb;
  color: #b45309;
  border: 1px solid #fde68a;
}

.alert-success {
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 0.5rem; }