/* ============================================
   ELITEMINDPRO - TAREA DE TIEMPO DE REACCIÓN
   Diseño Moderno de Laboratorio Neurocognitivo
   ============================================ */

:root {
  /* Sistema de colores para laboratorio neurocognitivo */
  --color-primary: #0a0e17;
  --color-secondary: #101624;
  --color-surface: #151c2e;
  --color-surface-light: #1e263c;
  
  --color-text: #f0f4ff;
  --color-text-secondary: #a1b1d9;
  --color-text-muted: #6b7aa0;
  
  --color-accent: #6c8cff;
  --color-accent-dark: #4d6bff;
  --color-accent-glow: rgba(108, 140, 255, 0.25);
  
  --color-success: #4ade80;
  --color-warning: #fbbf24;
  --color-error: #f87171;
  
  --color-border: #2a3452;
  --color-border-light: #363f5e;
  
  /* Variables de diseño */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(108, 140, 255, 0.15);
  
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Espaciado */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
}

/* Reset y configuración base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-primary);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Partículas decorativas de fondo */
.particles {
  position: fixed;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(108, 140, 255, 0.1);
  filter: blur(1px);
}

.p1 { width: 300px; height: 300px; top: 10%; left: 5%; background: radial-gradient(circle, rgba(108, 140, 255, 0.05) 0%, transparent 70%); }
.p2 { width: 200px; height: 200px; bottom: 15%; right: 10%; background: radial-gradient(circle, rgba(77, 107, 255, 0.04) 0%, transparent 70%); }
.p3 { width: 150px; height: 150px; top: 50%; left: 15%; background: radial-gradient(circle, rgba(108, 140, 255, 0.03) 0%, transparent 70%); }
.p4 { width: 100px; height: 100px; bottom: 30%; left: 20%; background: radial-gradient(circle, rgba(77, 107, 255, 0.02) 0%, transparent 70%); }
.p5 { width: 250px; height: 250px; top: 20%; right: 15%; background: radial-gradient(circle, rgba(108, 140, 255, 0.06) 0%, transparent 70%); }

/* Header */
.header {
  background: linear-gradient(135deg, 
    rgba(10, 14, 23, 0.95) 0%,
    rgba(16, 22, 36, 0.9) 100%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo-icon {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 10px rgba(108, 140, 255, 0.3));
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--color-text), var(--color-text-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.5px;
}

.logo-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.task-badge {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(108, 140, 255, 0.1);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-full);
  color: var(--color-accent);
  font-weight: 500;
  font-size: 0.875rem;
}

.badge-icon {
  font-size: 1.25rem;
}

/* Main container */
.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  position: relative;
  z-index: 2;
}

/* Cards y pantallas */
.screen {
  animation: fadeIn var(--transition-base);
}

.card {
  background: linear-gradient(145deg, 
    rgba(21, 28, 46, 0.95) 0%,
    rgba(30, 38, 60, 0.8) 100%);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5), var(--shadow-glow);
}

.card-header {
  margin-bottom: var(--space-xl);
  text-align: center;
}

.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.step {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  color: var(--color-text-muted);
  font-weight: 600;
  transition: all var(--transition-base);
}

.step.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  box-shadow: 0 0 0 4px rgba(108, 140, 255, 0.2);
}

.step-line {
  width: 60px;
  height: 2px;
  background: var(--color-border);
}

.screen-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  background: linear-gradient(to right, var(--color-text), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.screen-subtitle {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Formularios */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.label-text {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.95rem;
}

.label-required {
  color: var(--color-error);
  font-size: 0.75rem;
  font-weight: 500;
}

.label-optional {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 400;
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: var(--space-md);
  color: var(--color-text-muted);
  font-size: 1.25rem;
  pointer-events: none;
}

.modern-input {
  width: 100%;
  padding: var(--space-md) var(--space-md) var(--space-md) calc(var(--space-md) * 2.5);
  background: rgba(10, 14, 23, 0.6);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  transition: all var(--transition-fast);
}

.modern-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(108, 140, 255, 0.2);
  background: rgba(10, 14, 23, 0.8);
}

.modern-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

.input-hint {
  margin-top: var(--space-xs);
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.4;
}

/* Botones */
.action-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.btn {
  padding: var(--space-md) var(--space-xl);
  border: none;
  border-radius: var(--radius-md);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.btn:hover::after {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: white;
  box-shadow: 0 4px 15px rgba(108, 140, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(108, 140, 255, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-icon {
  padding: var(--space-md) var(--space-xl);
}

.btn-icon .btn-icon {
  font-size: 1.25rem;
}

.btn-large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1.125rem;
}

.action-hint {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  text-align: center;
}

kbd {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  color: var(--color-accent);
  box-shadow: 0 2px 0 var(--color-border);
}

/* Instrucciones */
.instructions-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.instruction-card {
  background: rgba(10, 14, 23, 0.5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-md);
  transition: transform var(--transition-base);
}

.instruction-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.instruction-card.warning {
  border-left: 4px solid var(--color-warning);
}

.instruction-card.error {
  border-left: 4px solid var(--color-error);
}

.instruction-card.success {
  border-left: 4px solid var(--color-success);
}

.instruction-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.instruction-text h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.instruction-text p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.keyboard-hint {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.keyboard-key {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.keyboard-key kbd {
  font-size: 1.5rem;
  padding: var(--space-sm) var(--space-lg);
  margin-bottom: var(--space-xs);
}

.keyboard-key span {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Pantalla de tarea */
.task-screen {
  background: linear-gradient(135deg, 
    rgba(10, 14, 23, 0.98) 0%,
    rgba(16, 22, 36, 0.95) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  min-height: 600px;
  display: flex;
  flex-direction: column;
}

.task-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.task-info {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.info-card {
  background: rgba(10, 14, 23, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  min-width: 140px;
  text-align: center;
}

.info-label {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-xs);
}

.info-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: 'JetBrains Mono', monospace;
}

.keyboard-display kbd {
  font-size: 1.25rem;
  padding: var(--space-sm) var(--space-md);
}

.task-progress {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.progress-bar {
  height: 8px;
  background: var(--color-surface);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-dark));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width var(--transition-slow);
}

.progress-text {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* Estímulo */
.stimulus-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  margin: var(--space-xl) 0;
}

.fixation-point {
  position: absolute;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fixation-dot {
  width: 6px;
  height: 6px;
  background: var(--color-text-muted);
  border-radius: 50%;
  position: absolute;
}

.fixation-cross {
  width: 20px;
  height: 20px;
  position: relative;
}

.fixation-cross::before,
.fixation-cross::after {
  content: '';
  position: absolute;
  background: var(--color-text-muted);
  opacity: 0.3;
}

.fixation-cross::before {
  width: 2px;
  height: 20px;
  left: 9px;
  top: 0;
}

.fixation-cross::after {
  width: 20px;
  height: 2px;
  top: 9px;
  left: 0;
}

.stimulus {
  width: 180px;
  height: 180px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #ffd54a, #ffb347);
  opacity: 0;
  box-shadow: 0 0 60px rgba(255, 213, 74, 0),
              inset 0 4px 20px rgba(255, 255, 255, 0.2);
  border: 4px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  transform: scale(0.9);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.stimulus::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 70%
  );
  animation: shine 3s infinite linear;
}

.task-instruction {
  text-align: center;
  margin-top: var(--space-lg);
}

.task-instruction p {
  color: var(--color-text);
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.instruction-small {
  color: var(--color-text-secondary) !important;
  font-size: 0.95rem !important;
}

/* Pantalla final */
.completion-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.completion-icon {
  font-size: 4rem;
  background: linear-gradient(135deg, var(--color-success), #22c55e);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 20px rgba(74, 222, 128, 0.3));
}

.result-summary {
  width: 100%;
  max-width: 600px;
}

.result-summary h3 {
  text-align: center;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
  font-size: 1.5rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-md);
  background: rgba(10, 14, 23, 0.5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.summary-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: rgba(21, 28, 46, 0.5);
  border-radius: var(--radius-md);
}

.summary-label {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  text-align: center;
}

.summary-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: 'JetBrains Mono', monospace;
}

.save-status-container {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: rgba(10, 14, 23, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  width: 100%;
  max-width: 600px;
}

.status-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.status-content h4 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.status-content p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* Alertas */
.alert {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  animation: slideIn var(--transition-base);
}

.alert.error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: #fecaca;
}

.alert-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
}

.hidden {
  display: none !important;
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  margin-top: var(--space-2xl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-info p {
  color: var(--color-text);
  font-size: 0.95rem;
}

.footer-sub {
  color: var(--color-text-muted) !important;
  font-size: 0.875rem !important;
}

.footer-tech {
  display: flex;
  gap: var(--space-sm);
}

.tech-badge {
  padding: var(--space-xs) var(--space-sm);
  background: rgba(108, 140, 255, 0.1);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-full);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 500;
}

/* Animaciones */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shine {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }
  
  .logo {
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }
  
  .screen-title {
    font-size: 1.75rem;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .instructions-content {
    grid-template-columns: 1fr;
  }
  
  .task-info {
    flex-direction: column;
    align-items: center;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }
  
  .card {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .main-container {
    padding: var(--space-md);
  }
  
  .screen-title {
    font-size: 1.5rem;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .stimulus {
    width: 140px;
    height: 140px;
  }
}