:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary: #0d9488;
  --accent: #f59e0b;
  --danger: #ef4444;
  --success: #10b981;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --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);
  --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
}

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

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

/* Header & Top Bar */
.top-header {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  border-bottom: 3px solid var(--primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.5);
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-text h1 span {
  color: #38bdf8;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: #94a3b8;
}

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

.role-switcher-box {
  background: #334155;
  border-radius: 8px;
  padding: 0.35rem 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.role-switcher-box select {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid #475569;
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  font-size: 0.82rem;
  cursor: pointer;
  outline: none;
}

/* Nav Tabs */
.nav-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 0.25rem 1.5rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

.nav-tab {
  padding: 0.75rem 1.1rem;
  border: none;
  background: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 3px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--primary);
  background: #f1f5f9;
}

.nav-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Main Container */
.main-content {
  max-width: 1380px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

/* Tab Content Visibility */
.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Section Header */
.section-banner {
  background: #eff6ff;
  border-left: 4px solid var(--primary);
  padding: 0.75rem 1rem;
  border-radius: 0 8px 8px 0;
  margin-bottom: 1.25rem;
  font-size: 0.85rem;
  color: #1e3a8a;
  line-height: 1.45;
}

/* Lab Simulator Layout */
.lab-grid {
  display: grid;
  grid-template-columns: 320px 1fr 340px;
  gap: 1.25rem;
}

@media (max-width: 1150px) {
  .lab-grid {
    grid-template-columns: 1fr;
  }
}

/* Generic Card */
.card {
  background: var(--bg-card);
  border-radius: 10px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Step-by-Step Guide Panel */
.steps-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.step-item {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  background: #f8fafc;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.step-item.active {
  border-color: var(--primary);
  background: #eff6ff;
  box-shadow: 0 0 0 1px var(--primary);
}

.step-item.completed {
  border-color: var(--success);
  background: #f0fdf4;
}

.step-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

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

/* Virtual Tools Rack */
.tools-rack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin-top: 1rem;
}

.tool-btn {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.6rem 0.4rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}

.tool-btn:hover {
  border-color: var(--primary);
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.tool-btn.active {
  background: #dbeafe;
  border-color: var(--primary);
  color: #1d4ed8;
}

.tool-btn .icon {
  font-size: 1.4rem;
}

/* Center Lab Workbench */
.workbench-area {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.lab-table-isometric {
  position: relative;
  background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
  border-radius: 12px;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
  border: 1px solid #334155;
}

.lab-status-overlay {
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: #f8fafc;
  font-size: 0.8rem;
  z-index: 10;
}

.canvas-container {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 300px;
}

#molecularCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.workbench-controls {
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.85);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  z-index: 10;
}

.btn {
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

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

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

.btn-secondary {
  background: #e2e8f0;
  color: #334155;
}

.btn-secondary:hover {
  background: #cbd5e1;
}

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

.btn-success:hover {
  background: #059669;
}

.btn-outline {
  background: transparent;
  border: 1px solid #94a3b8;
  color: #cbd5e1;
}

.btn-outline:hover {
  border-color: #ffffff;
  color: #ffffff;
}

/* Scientific Analysis Panel */
.reaction-result-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.85rem;
  margin-top: 0.75rem;
}

.reaction-math {
  font-family: 'Consolas', 'Courier New', monospace;
  background: #1e293b;
  color: #38bdf8;
  padding: 0.5rem;
  border-radius: 6px;
  font-size: 0.85rem;
  margin: 0.5rem 0;
  text-align: center;
}

.bond-tag {
  display: inline-block;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.bond-ionic {
  background: #fef3c7;
  color: #b45309;
}

.bond-covalent-polar {
  background: #dbeafe;
  color: #1e40af;
}

.bond-covalent-nonpolar {
  background: #e0e7ff;
  color: #4338ca;
}

/* PubChem API Cache Card */
.pubchem-card {
  margin-top: 1rem;
  background: #f1f5f9;
  border: 1px dashed #94a3b8;
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 0.8rem;
}

.pubchem-metric {
  display: flex;
  justify-content: space-between;
  margin-top: 0.35rem;
  color: #475569;
}

.pubchem-metric span.fast {
  color: #16a34a;
  font-weight: 700;
}

/* Virtual Assistant Quimi */
.quimi-assistant-card {
  border-top: 4px solid #06b6d4;
  background: #ffffff;
}

.quimi-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.quimi-avatar {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

.quimi-chat-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  height: 220px;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chat-bubble {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.8rem;
  max-width: 85%;
  line-height: 1.35;
}

.chat-bubble.bot {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e3a8a;
  align-self: flex-start;
}

.chat-bubble.user {
  background: #0284c7;
  color: #ffffff;
  align-self: flex-end;
}

.quimi-select-group {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.quimi-opt-btn {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  font-size: 0.78rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s;
  color: #1e293b;
}

.quimi-opt-btn:hover {
  background: #f0fdfa;
  border-color: #0d9488;
  color: #0f766e;
}

/* Quiz Section */
.quiz-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .quiz-grid {
    grid-template-columns: 1fr;
  }
}

.question-card {
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.question-text {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  border: 1px solid transparent;
}

.option-item:hover {
  background: #f1f5f9;
}

.option-item input {
  cursor: pointer;
}

/* Digital Guidebook */
.guide-search-box {
  margin-bottom: 1rem;
}

.search-input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  outline: none;
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.guide-entries {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.guide-entry-card {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  background: #ffffff;
  transition: all 0.2s;
}

.guide-entry-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.guide-entry-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.4rem;
}

.category-pill {
  display: inline-block;
  background: #e0e7ff;
  color: #3730a3;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
}

/* Teacher Dashboard */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 800px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stat-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
}

.stat-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.table-responsive {
  overflow-x: auto;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.custom-table th, .custom-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.custom-table th {
  background: #f8fafc;
  font-weight: 700;
  color: #475569;
}

.status-tag {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-passed {
  background: #dcfce7;
  color: #15803d;
}

.status-pending {
  background: #fef3c7;
  color: #b45309;
}

/* ================= INFRAESTRUCTURA DE SOFTWARE ================= */
.infra-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 950px) {
  .infra-grid {
    grid-template-columns: 1fr;
  }
}

.infra-tier-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
}

.infra-tier-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.tier-frontend::before { background: #0284c7; }
.tier-backend::before { background: #16a34a; }
.tier-database::before { background: #8b5cf6; }

.tier-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
}

.tier-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: #f1f5f9;
}

.tier-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0f172a;
}

.tier-subtitle {
  font-size: 0.75rem;
  color: #64748b;
}

.tech-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
}

.tech-item strong {
  color: #1e293b;
  display: block;
}

.tech-item span {
  color: #64748b;
  font-size: 0.75rem;
}

/* Printable PDF Report View */
@media print {
  body * {
    visibility: hidden;
  }
  #printableReport, #printableReport * {
    visibility: visible;
  }
  #printableReport {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    margin: 0;
    padding: 20px;
    background: white;
  }
}

/* ================= GESTIÓN DE USUARIOS Y AUTENTICACIÓN ================= */
.user-profile-chip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 9999px;
  padding: 0.35rem 0.85rem;
  color: #ffffff;
  font-size: 0.82rem;
}

.user-profile-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #38bdf8, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
}

.user-role-pill {
  background: #38bdf8;
  color: #0f172a;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 9999px;
  text-transform: uppercase;
}

.auth-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(5px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.auth-modal-backdrop.open {
  display: flex;
}

.auth-modal-card {
  background: #ffffff;
  width: 90%;
  max-width: 460px;
  border-radius: 14px;
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.2), 0 8px 10px -6px rgb(0 0 0 / 0.2);
  overflow: hidden;
  position: relative;
  animation: fadeIn 0.2s ease-out;
}

.auth-header {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #ffffff;
  padding: 1.5rem;
  text-align: center;
  position: relative;
}

.auth-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

.auth-header p {
  font-size: 0.8rem;
  color: #94a3b8;
}

.auth-tabs-bar {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background: #f8fafc;
}

.auth-tab-btn {
  flex: 1;
  padding: 0.85rem;
  border: none;
  background: none;
  font-size: 0.88rem;
  font-weight: 600;
  color: #64748b;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.auth-tab-btn.active {
  color: var(--primary);
  background: #ffffff;
  border-bottom-color: var(--primary);
}

.auth-body {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 0.35rem;
}

.form-input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  border: 1px solid #cbd5e1;
  font-size: 0.85rem;
  outline: none;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.quick-roles-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
  margin: 1.25rem 0 0.5rem 0;
  text-align: center;
}

.quick-roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.quick-role-btn {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0.5rem 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #1e293b;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}

.quick-role-btn:hover {
  background: #e2e8f0;
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.access-denied-card {
  text-align: center;
  padding: 3rem 1.5rem;
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid #fecaca;
}

.access-denied-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

/* ================= PANTALLA COMPLETA DE INICIO DE SESIÓN (LOGIN FULLSCREEN) ================= */
.fullscreen-login-view {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  display: flex;
  background: radial-gradient(circle at 20% 30%, #1e293b 0%, #0f172a 70%, #0284c7 100%);
  overflow-y: auto;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-container-card {
  background: #ffffff;
  width: 100%;
  max-width: 980px;
  min-height: 560px;
  border-radius: 20px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.1);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  overflow: hidden;
  animation: fadeIn 0.3s ease-out;
}

@media (max-width: 820px) {
  .login-container-card {
    grid-template-columns: 1fr;
    max-width: 480px;
  }
  .login-hero-side {
    display: none;
  }
}

.login-hero-side {
  background: linear-gradient(145deg, #0f172a 0%, #1e3a8a 100%);
  color: #ffffff;
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.login-hero-side::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #38bdf8, #2563eb);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.4);
}

.hero-title h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.hero-title h1 span {
  color: #38bdf8;
}

.hero-title p {
  font-size: 0.85rem;
  color: #94a3b8;
}

.hero-features {
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-feat-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.hero-feat-icon {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.hero-feat-text strong {
  font-size: 0.9rem;
  display: block;
  color: #f8fafc;
}

.hero-feat-text span {
  font-size: 0.8rem;
  color: #94a3b8;
  line-height: 1.35;
}

.hero-footer-note {
  font-size: 0.75rem;
  color: #64748b;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
}

.login-form-side {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #ffffff;
}

.login-card-header {
  margin-bottom: 1.5rem;
}

.login-card-header h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #0f172a;
}

.login-card-header p {
  font-size: 0.85rem;
  color: #64748b;
  margin-top: 0.25rem;
}

/* ================= DIÁLOGO CUADRADO CENTRADO (REEMPLAZO DE ALERT) ================= */
.custom-dialog-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10005;
}

.custom-dialog-backdrop.open {
  display: flex;
}

.custom-dialog-card {
  background: #ffffff;
  width: 380px;
  max-width: 90vw;
  border-radius: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
  border: 1px solid #e2e8f0;
  padding: 1.75rem 1.5rem;
  text-align: center;
  animation: scaleIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

.custom-dialog-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 1rem auto;
  border-radius: 50%;
  background: #eff6ff;
  color: #2563eb;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  border: 2px solid #bfdbfe;
}

.custom-dialog-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 0.5rem;
}

.custom-dialog-message {
  font-size: 0.86rem;
  color: #475569;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  white-space: pre-line;
  text-align: left;
  background: #f8fafc;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.custom-dialog-btn {
  width: 100%;
  padding: 0.7rem;
  border-radius: 8px;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

/* ================= GESTIÓN DE SALONES SEPARADOS (PANEL DOCENTE) ================= */
.classroom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.classroom-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.classroom-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.classroom-card-top {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.classroom-icon-box {
  width: 48px;
  height: 48px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.classroom-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0f172a;
}

.classroom-card-sub {
  font-size: 0.78rem;
  color: #64748b;
}

.classroom-info-list {
  background: #f8fafc;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  border: 1px solid #e2e8f0;
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.classroom-info-item {
  display: flex;
  justify-content: space-between;
  color: #475569;
}

.classroom-info-item strong {
  color: #1e293b;
}

.classroom-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  background: #ffffff;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.classroom-title-area {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.back-salones-btn {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  color: #334155;
  border-radius: 8px;
  padding: 0.5rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s;
}

.back-salones-btn:hover {
  background: #e2e8f0;
  color: var(--primary);
  border-color: var(--primary);
}

/* ================= BARRA LATERAL IZQUIERDA (SIDEBAR NAVIGATION) ================= */
.dashboard-layout {
  display: flex;
  min-height: 100vh;
  width: 100%;
  background-color: var(--bg-main);
}

.sidebar-left {
  width: 275px;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 50;
}

.sidebar-brand {
  padding: 1.5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand .brand-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #38bdf8, #2563eb);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  flex-shrink: 0;
}

.sidebar-brand .brand-text h1 {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.sidebar-brand .brand-subtitle {
  font-size: 0.72rem;
  color: #94a3b8;
}

.sidebar-nav-title {
  font-size: 0.68rem;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 1.25rem 1.25rem 0.5rem 1.25rem;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  flex: 1;
  overflow-y: auto;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: none !important;
  background: transparent !important;
  color: #94a3b8 !important;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  width: 100%;
  border-bottom: none !important;
}

.sidebar-nav-item .nav-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  transition: transform 0.2s ease;
}

.sidebar-nav-item .nav-text-block {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  text-align: left;
}

.sidebar-nav-item .nav-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: #e2e8f0;
  transition: color 0.2s ease;
}

.sidebar-nav-item .nav-hint {
  font-size: 0.7rem;
  color: #64748b;
  margin-top: 1px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.sidebar-nav-item:hover {
  background: rgba(255, 255, 255, 0.07) !important;
  color: #ffffff !important;
  transform: translateX(4px);
}

.sidebar-nav-item:hover .nav-label {
  color: #ffffff;
}

.sidebar-nav-item:hover .nav-hint {
  color: #94a3b8;
}

.sidebar-nav-item:hover .nav-icon {
  transform: scale(1.1);
}

.sidebar-nav-item.active {
  background: linear-gradient(90deg, rgba(56, 189, 248, 0.22) 0%, rgba(56, 189, 248, 0.05) 100%) !important;
  color: #38bdf8 !important;
  font-weight: 700;
  border-left: 4px solid #38bdf8 !important;
  box-shadow: inset 0 0 12px rgba(56, 189, 248, 0.08);
}

.sidebar-nav-item.active .nav-label {
  color: #38bdf8;
}

.sidebar-nav-item.active .nav-hint {
  color: #7dd3fc;
}

.sidebar-nav-item.active .nav-icon {
  transform: scale(1.12);
}

.sidebar-user-footer {
  padding: 1rem 1.15rem;
  background: rgba(15, 23, 42, 0.85);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.main-dashboard-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-y: auto;
  height: 100vh;
}

.top-context-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 40;
}

.context-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.context-badge {
  font-size: 0.78rem;
  color: #64748b;
  background: #f1f5f9;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  border: 1px solid #e2e8f0;
}

@media (max-width: 900px) {
  .dashboard-layout {
    flex-direction: column;
  }
  .sidebar-left {
    width: 100%;
    height: auto;
    position: relative;
  }
  .sidebar-nav-list {
    flex-direction: row;
    overflow-x: auto;
    padding: 0.5rem;
  }
  .sidebar-nav-item {
    padding: 0.5rem 0.75rem;
    white-space: nowrap;
    width: auto;
  }
  .main-dashboard-body {
    height: auto;
  }
}

/* ================= GESTIÓN DE EVALUACIONES Y CUESTIONARIOS DEL DOCENTE ================= */
.teacher-subnav {
  display: flex;
  gap: 0.75rem;
  border-bottom: 2px solid #e2e8f0;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
}

.teacher-subnav-btn {
  background: transparent;
  border: none;
  font-size: 0.92rem;
  font-weight: 700;
  color: #64748b;
  padding: 0.6rem 1.15rem;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.teacher-subnav-btn:hover {
  background: #f1f5f9;
  color: var(--primary);
}

.teacher-subnav-btn.active {
  background: #eff6ff;
  color: var(--primary);
  border-bottom: 3px solid var(--primary);
  border-radius: 8px 8px 0 0;
}

.evaluations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.eval-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.2s ease;
}

.eval-card:hover {
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.eval-card.published {
  border-left: 5px solid #16a34a;
}

.eval-card.draft {
  border-left: 5px solid #f59e0b;
}

.eval-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.eval-title {
  font-size: 1rem;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.35;
}

.eval-topic {
  font-size: 0.78rem;
  color: #64748b;
  margin-top: 0.25rem;
}

.status-pill-draft {
  background: #fef3c7;
  color: #b45309;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
  border: 1px solid #fde68a;
}

.status-pill-published {
  background: #dcfce7;
  color: #15803d;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
  border: 1px solid #bbf7d0;
}

.eval-meta-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: #475569;
  padding: 0.75rem 0;
  border-top: 1px dashed #e2e8f0;
  border-bottom: 1px dashed #e2e8f0;
  margin: 0.75rem 0;
}

.eval-classrooms-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.salon-chip {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  color: #1e293b;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
}

.eval-actions-bar {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

/* Modal Grande para Creador / Editor de Evaluaciones y Recuperación */
.eval-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 1rem;
}

.eval-modal-card {
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  width: 100%;
  max-width: 820px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border: 1px solid #e2e8f0;
  overflow: hidden;
  animation: modalScaleUp 0.2s ease-out;
}

.eval-modal-header {
  padding: 1.25rem 1.5rem;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.eval-modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.eval-modal-footer {
  padding: 1rem 1.5rem;
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.question-builder-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
  position: relative;
}

.question-builder-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.question-option-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.45rem;
}

.question-option-radio {
  accent-color: #2563eb;
  cursor: pointer;
}

.salon-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: all 0.15s ease;
}

.salon-checkbox-label:hover {
  background: #e2e8f0;
}

.salon-checkbox-label input:checked + span {
  color: #2563eb;
  font-weight: 700;
}

/* ================= LIBRO GUÍA DIGITAL Y BÚSQUEDA AVANZADA ================= */
.guide-category-filters {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.5rem 0 1rem 0;
  margin-bottom: 0.5rem;
}

.guide-cat-btn {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  color: #475569;
  border-radius: 9999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.guide-cat-btn:hover {
  background: #e2e8f0;
  color: #0f172a;
}

.guide-cat-btn.active {
  background: #2563eb;
  border-color: #2563eb;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.35);
}

.guide-formula-tag {
  display: inline-block;
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  margin: 0.4rem 0;
}

.guide-procedure-box {
  background: #f8fafc;
  border-left: 3px solid #0284c7;
  padding: 0.6rem 0.8rem;
  border-radius: 0 6px 6px 0;
  font-size: 0.78rem;
  color: #334155;
  margin-top: 0.6rem;
  line-height: 1.35;
}

.guide-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.85rem;
  padding-top: 0.65rem;
  border-top: 1px solid #f1f5f9;
}

.guide-read-btn {
  background: transparent;
  border: 1px solid #cbd5e1;
  color: #2563eb;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 6px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: all 0.15s ease;
}

.guide-read-btn:hover {
  background: #eff6ff;
  border-color: #93c5fd;
}

.guide-modal-content {
  line-height: 1.6;
  font-size: 0.9rem;
  color: #334155;
}

.guide-modal-content h4 {
  color: #0f172a;
  margin: 1rem 0 0.4rem 0;
  font-size: 1rem;
}

.guide-modal-content ul {
  padding-left: 1.25rem;
  margin: 0.5rem 0;
}

.guide-modal-content li {
  margin-bottom: 0.35rem;
}

/* ================= RF008 & RF009: HERRAMIENTAS VIRTUALES Y USO GUIADO ================= */
.tool-instruction-step {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 0.75rem;
  background: #f8fafc;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.tool-step-badge {
  background: #2563eb;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-step-text strong {
  display: block;
  font-size: 0.85rem;
  color: #0f172a;
}

.tool-step-text span {
  font-size: 0.78rem;
  color: #64748b;
  line-height: 1.35;
}

.tool-safety-alert {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-left: 4px solid #ef4444;
  padding: 0.65rem 0.85rem;
  border-radius: 0 8px 8px 0;
  font-size: 0.78rem;
  color: #991b1b;
  margin: 1rem 0;
  line-height: 1.4;
}

.tool-interactive-playground {
  background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 1.15rem;
  color: #ffffff;
  margin-top: 1rem;
}

.digital-scale-display {
  background: #000000;
  border: 2px solid #334155;
  border-radius: 8px;
  color: #22c55e;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 1.8rem;
  font-weight: 800;
  text-align: center;
  padding: 0.5rem 1rem;
  letter-spacing: 2px;
  text-shadow: 0 0 10px rgba(34, 197, 94, 0.6);
  margin-bottom: 0.75rem;
}

.thermometer-display {
  background: #000000;
  border: 2px solid #334155;
  border-radius: 8px;
  color: #38bdf8;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 1.8rem;
  font-weight: 800;
  text-align: center;
  padding: 0.5rem 1rem;
  letter-spacing: 2px;
  text-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
  margin-bottom: 0.75rem;
}

.ph-gauge-display {
  background: #000000;
  border: 2px solid #334155;
  border-radius: 8px;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 1.8rem;
  font-weight: 800;
  text-align: center;
  padding: 0.5rem 1rem;
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
}

.tool-action-btn {
  background: #2563eb;
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.tool-action-btn:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}

/* ================= MODELOS 2D DE INSTRUMENTOS VIRTUALES ================= */
.tool-2d-showcase {
  background: radial-gradient(circle at center, #ffffff 0%, #f1f5f9 100%);
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.03);
}

.tool-2d-svg-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 180px;
  max-height: 220px;
  width: 100%;
}

.tool-2d-parts-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: center;
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px dashed #cbd5e1;
  width: 100%;
}

.tool-part-tag {
  background: #ffffff;
  border: 1px solid #94a3b8;
  color: #1e293b;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

@keyframes flameFlicker {
  0% { transform: scaleY(1) skewX(0deg); opacity: 0.95; }
  50% { transform: scaleY(1.08) skewX(1deg); opacity: 1; }
  100% { transform: scaleY(0.96) skewX(-1deg); opacity: 0.92; }
}

@keyframes meniscusFlow {
  0% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
  100% { transform: translateY(0); }
}

@keyframes dropFall {
  0% { transform: translateY(0); opacity: 1; }
  80% { transform: translateY(20px); opacity: 0.8; }
  100% { transform: translateY(30px); opacity: 0; }
}

/* ================= PADRÓN GLOBAL DE USUARIOS & NOTAS (ADMINISTRADOR) ================= */
.admin-filters-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 0.85rem 1rem;
  margin-top: 1rem;
}

.admin-filters-grid {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

.badge-role {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  font-size: 0.73rem;
  font-weight: 700;
}

.badge-role-student {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.badge-role-teacher {
  background: #fdf2f8;
  color: #be185d;
  border: 1px solid #fbcfe8;
}

.badge-role-admin {
  background: #f5f3ff;
  color: #6d28d9;
  border: 1px solid #ddd6fe;
}

.score-pill {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.82rem;
  text-align: center;
}

.score-pill-high {
  background: #dcfce7;
  color: #15803d;
  border: 1px solid #86efac;
}

.score-pill-mid {
  background: #fef9c3;
  color: #854d0e;
  border: 1px solid #fde047;
}

.score-pill-low {
  background: #fee2e2;
  color: #b91c1c;
  border: 1px solid #fca5a5;
}

.score-pill-none {
  background: #f1f5f9;
  color: #64748b;
  border: 1px solid #cbd5e1;
}

.user-table-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  margin-right: 0.6rem;
  flex-shrink: 0;
}

.user-cell-flex {
  display: flex;
  align-items: center;
}

/* ================= BANDEJA DE SOLICITUDES DE ROL DOCENTE ================= */
.teacher-request-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  background: #ffffff;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  margin-bottom: 0.65rem;
  flex-wrap: wrap;
  gap: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.teacher-request-item:last-child {
  margin-bottom: 0;
}

.badge-role-pending {
  background: #fffbeb;
  color: #b45309;
  border: 1px solid #fde047;
}