/* ============================================================
   simulators.css — Estils dels simuladors interactius
   ============================================================ */

/* ---------- Contenidor comú de simuladors ---------- */
.simulator-wrapper {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.simulator-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.simulator-title {
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent);
}

.simulator-controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.simulator-body {
  padding: 1.25rem;
}

/* ---------- Simulador PING ---------- */
.ping-input-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.ping-input-row input {
  flex: 1;
  min-width: 180px;
}

.ping-output {
  background: var(--color-terminal);
  border: 1px solid #30363d;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  min-height: 200px;
  overflow-y: auto;
  line-height: 2;
}

.ping-line {
  color: #c9d1d9;
  opacity: 0;
  transform: translateX(-10px);
  animation: slideInLine 0.3s ease forwards;
}

.ping-line.success { color: var(--color-green); }
.ping-line.error   { color: #ff6b6b; }
.ping-line.info    { color: var(--color-accent); }
.ping-line.summary { color: #fbbf24; font-weight: bold; }

@keyframes slideInLine {
  to { opacity: 1; transform: translateX(0); }
}

.ping-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}

.ping-stat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem;
  text-align: center;
}

.ping-stat-value {
  font-size: 1.4rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-accent);
}

.ping-stat-label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.2rem;
}

/* ---------- Simulador DNS ---------- */
.dns-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: nowrap;
  padding: 1.5rem 0;
  overflow-x: auto;
}

.dns-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  min-width: 90px;
  opacity: 0.3;
  transition: all 0.4s ease;
}

.dns-node.active {
  opacity: 1;
  transform: scale(1.05);
}

.dns-node .node-icon {
  width: 60px;
  height: 60px;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.dns-node.active .node-icon {
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(0, 188, 212, 0.3);
}

.dns-node .node-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  color: var(--color-text-muted);
}

.dns-node.active .node-label {
  color: var(--color-accent);
}

.dns-arrow {
  width: 40px;
  height: 2px;
  background: var(--color-border);
  position: relative;
  flex-shrink: 0;
  transition: background 0.4s ease;
}

.dns-arrow.active {
  background: var(--color-accent);
}

.dns-arrow::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -4px;
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid var(--color-border);
  transition: border-left-color 0.4s ease;
}

.dns-arrow.active::after {
  border-left-color: var(--color-accent);
}

/* Paquet animat al DNS */
.dns-packet {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  top: -5px;
  box-shadow: 0 0 10px var(--color-accent);
  pointer-events: none;
}

.dns-step-info {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-top: 1rem;
  font-size: 0.88rem;
  min-height: 60px;
  transition: all 0.3s ease;
}

.dns-step-info.active {
  border-color: var(--color-accent);
  background: rgba(0, 188, 212, 0.05);
}

/* ---------- Simulador TCP Handshake ---------- */
.tcp-diagram {
  display: flex;
  gap: 2rem;
  padding: 1rem 0;
  justify-content: center;
}

.tcp-host {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: 100px;
}

.tcp-host-icon {
  width: 70px;
  height: 70px;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.tcp-host-label {
  font-size: 0.85rem;
  font-weight: 600;
}

.tcp-timeline {
  flex: 1;
  position: relative;
  min-height: 300px;
  padding: 70px 0 0;
  max-width: 400px;
}

.tcp-step {
  position: relative;
  margin-bottom: 2rem;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.tcp-step.visible { opacity: 1; }

.tcp-step-arrow {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 0 0.5rem;
  border-radius: 4px;
  position: relative;
}

.tcp-step-arrow.client-to-server {
  background: rgba(26, 115, 232, 0.1);
  color: #60a5fa;
  border: 1px solid rgba(26, 115, 232, 0.3);
  justify-content: flex-start;
}

.tcp-step-arrow.server-to-client {
  background: rgba(67, 160, 71, 0.1);
  color: #4ade80;
  border: 1px solid rgba(67, 160, 71, 0.3);
  justify-content: flex-end;
}

.tcp-step-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0.3rem;
}

/* ---------- Simulador de Subnetting ---------- */
.subnet-calculator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.subnet-inputs { }

.subnet-results { }

.subnet-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.subnet-result-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.9rem;
  text-align: center;
  transition: border-color var(--transition);
}

.subnet-result-card:hover {
  border-color: var(--color-primary);
}

.subnet-result-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
  word-break: break-all;
}

.subnet-result-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
}

/* Slider CIDR */
.cidr-slider-container {
  margin: 1rem 0;
}

.cidr-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.3rem;
}

input[type="range"].cidr-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(to right, var(--color-primary) 0%, var(--color-primary) 50%, var(--color-border) 50%);
  outline: none;
}

input[type="range"].cidr-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(26, 115, 232, 0.5);
}

.subnet-binary-display {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--color-terminal);
  border: 1px solid #30363d;
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
  word-break: break-all;
  line-height: 1.8;
}

.binary-network { color: var(--color-danger); }
.binary-host    { color: var(--color-success); }

/* ---------- Simulador Internet Journey ---------- */
.journey-flow {
  display: flex;
  flex-direction: column;
  gap: 0;
  align-items: center;
  padding: 1rem 0;
}

.journey-node {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
  max-width: 600px;
  padding: 0.75rem 1.5rem;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  transition: all 0.5s ease;
  position: relative;
}

.journey-node.active {
  border-color: var(--color-accent);
  background: rgba(0, 188, 212, 0.06);
  box-shadow: 0 0 20px rgba(0, 188, 212, 0.15);
}

.journey-node.completed {
  border-color: var(--color-success);
  opacity: 0.7;
}

.journey-connector {
  width: 2px;
  height: 30px;
  background: var(--color-border);
  margin: 2px auto;
  position: relative;
  transition: background 0.5s ease;
}

.journey-connector.active {
  background: var(--color-accent);
}

.journey-connector::after {
  content: '▼';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: inherit;
}

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

.journey-node-info {
  flex: 1;
}

.journey-node-title {
  font-weight: 700;
  font-size: 0.95rem;
}

.journey-node-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

.journey-node-status {
  font-size: 1.2rem;
}

.journey-step-log {
  background: var(--color-terminal);
  border: 1px solid #30363d;
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  min-height: 120px;
  margin-top: 1rem;
  overflow-y: auto;
  line-height: 1.8;
}

/* ---------- Packet Tracer ---------- */
.packet-tracer-canvas-wrapper {
  position: relative;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  height: 250px;
}

#packet-tracer-canvas {
  width: 100%;
  height: 100%;
}

.packet-tracer-device {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  cursor: default;
}

.packet-tracer-device .device-icon {
  width: 50px;
  height: 50px;
  background: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: border-color var(--transition);
}

.packet-tracer-device.highlighted .device-icon {
  border-color: var(--color-warning);
  box-shadow: 0 0 15px rgba(251, 140, 0, 0.4);
}

.packet-tracer-device .device-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-align: center;
  color: var(--color-text-muted);
}

.packet-ball {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-warning);
  box-shadow: 0 0 12px var(--color-warning);
  pointer-events: none;
  transition: none;
  z-index: 10;
}