/* ==============================================================================
   FADENA-UNIX OS 4.4BSD — ESTÉTICA Y ANIMACIONES DE CONSOLA UNIX CLÁSICA
   + AVATARES DE ANIMALES CÚBICOS ANIMADOS ESTILO MINECRAFT (VOXEL 8x8)
============================================================================== */

:root {
  --color-canvas-default: #090a09;
  --color-canvas-subtle: #101210;
  --color-canvas-inset: #050605;
  --color-header-bg: #0d0f0d;
  --color-border-default: #293029;
  --color-border-muted: #1b201b;
  --color-fg-default: #e0e6e0;
  --color-fg-muted: #8c968c;
  --color-fg-subtle: #586258;
  --color-accent-fg: #d8e2d8;
  --color-accent-emphasis: #e0e6e0;
  --color-success-fg: #5af78e;
  --color-success-emphasis: #1f8a42;
  --color-attention-fg: #f3f99d;
  --color-attention-emphasis: #a68a12;
  --color-danger-fg: #ff5c57;
  --color-sudo-fg: #ffb86c;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

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

html {
  font-size: 13.5px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  background-color: var(--color-canvas-default);
  color: var(--color-fg-default);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  min-height: 100vh;
  padding-bottom: calc(34px + env(safe-area-inset-bottom, 0px));
  font-variant-numeric: tabular-nums;
  position: relative;
  touch-action: manipulation;
}

/* Efecto sutil de barrido de monitor CRT UNIX */
body.unix-crt::after {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.16) 3px
  );
  pointer-events: none;
  z-index: 9999;
}

a {
  color: var(--color-success-fg);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  background-color: var(--color-success-fg);
  color: #050605;
  text-decoration: none;
}

code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  padding: 1px 5px;
  color: var(--color-success-fg);
}

/* ==============================================================================
   ANIMACIONES UNIX & MINECRAFT VOXEL
============================================================================== */
@keyframes unixCursorBlink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@keyframes unixLineAppear {
  from {
    opacity: 0;
    transform: translateY(3px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes unixTerminalScan {
  0% {
    opacity: 0.25;
    clip-path: inset(0 0 85% 0);
  }
  100% {
    opacity: 1;
    clip-path: inset(0 0 0 0);
  }
}

/* Animación por pasos estilo Minecraft para los animales cúbicos */
@keyframes mcVoxelBob {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-2px); }
}

@keyframes mcEyeBlink {
  0%, 92%, 100% { transform: scaleY(1); }
  95% { transform: scaleY(0.1); }
}

@keyframes mcEarTwitch {
  0%, 84%, 100% { transform: translateY(0); }
  88% { transform: translateY(-0.4px); }
}

.unix-cursor-block,
.unix-cursor-inline {
  display: inline-block;
  color: var(--color-success-fg);
  animation: unixCursorBlink 1s steps(2, start) infinite;
  font-weight: 700;
}

.tab-view.active {
  animation: unixTerminalScan 0.18s steps(6, end);
}

/* ==============================================================================
   PANTALLA DE LOGIN: CONSOLA UNIX INTERACTIVA (tty1)
============================================================================== */
.unix-login-overlay {
  min-height: calc(100vh / 1.4);
  background-color: #050605;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.unix-terminal-window {
  width: 100%;
  max-width: 900px;
  background-color: #090b09;
  border: 1px solid #384438;
  box-shadow: 0 0 0 1px #141814;
}

.unix-terminal-titlebar {
  background-color: #161b16;
  border-bottom: 1px solid #384438;
  padding: 6px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--color-fg-muted);
}

.unix-terminal-body {
  padding: 18px;
  min-height: 480px;
  max-height: 86vh;
  overflow-y: auto;
}

.unix-boot-log {
  font-size: 11.5px;
  color: var(--color-fg-muted);
  margin-bottom: 12px;
}

.unix-boot-line {
  animation: unixLineAppear 0.08s ease-out;
  margin-bottom: 2px;
}

.unix-ascii-banner {
  font-family: var(--font-mono);
  font-size: clamp(6.5px, 1.8vw, 11px);
  line-height: 1.15;
  color: var(--color-success-fg);
  overflow-x: auto;
  white-space: pre;
  margin-bottom: 14px;
}

.unix-login-instructions {
  border: 1px dashed var(--color-border-default);
  background-color: #0c0e0c;
  padding: 10px 12px;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--color-fg-default);
}

.cmd-highlight {
  color: var(--color-attention-fg);
  font-weight: 700;
}

.unix-console-history {
  margin-bottom: 12px;
}

.console-entry {
  margin-bottom: 8px;
  animation: unixLineAppear 0.1s ease-out;
}

.console-cmd-echo {
  color: var(--color-fg-default);
  font-weight: 700;
}

.console-cmd-output {
  color: var(--color-fg-muted);
  padding-left: 10px;
  border-left: 1px solid var(--color-border-default);
  margin-top: 3px;
  white-space: pre-wrap;
}

.unix-google-auth-box {
  border: 1px solid var(--color-success-emphasis);
  background-color: #0c100c;
  padding: 14px;
  margin: 12px 0;
  animation: unixLineAppear 0.15s ease-out;
}

.unix-auth-header {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--color-success-fg);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-border-default);
  padding-bottom: 6px;
}

.unix-auth-content {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.unix-auth-col {
  flex: 1;
  min-width: 240px;
}

.unix-auth-divider {
  font-weight: 700;
  color: var(--color-fg-subtle);
  padding: 0 4px;
}

.unix-inline-auth-form {
  display: flex;
  gap: 6px;
}

.unix-auth-status {
  margin-top: 10px;
  font-size: 12px;
  color: var(--color-attention-fg);
}

.unix-prompt-line {
  display: flex;
  align-items: center;
  gap: 8px;
  border-top: 1px solid var(--color-border-muted);
  padding-top: 10px;
}

.unix-prompt-label {
  color: var(--color-success-fg);
  font-weight: 700;
  white-space: nowrap;
}

.unix-prompt-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--color-fg-default);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
}

/* ==============================================================================
   AVATARES DE ANIMALES ANIMADOS ESTILO MINECRAFT (8x8 VOXEL PIXEL-ART)
============================================================================== */
.mc-avatar-box {
  width: 34px;
  height: 34px;
  border: 1px solid var(--color-border-default);
  background-color: #050605;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  flex-shrink: 0;
}

.mc-avatar-box.mc-avatar-sm {
  width: 26px;
  height: 26px;
}

.mc-avatar-box.mc-avatar-lg {
  width: 48px;
  height: 48px;
}

.mc-avatar-svg {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  animation: mcVoxelBob 1.6s steps(2, end) infinite;
}

.mc-avatar-svg .mc-eyes {
  transform-origin: center;
  animation: mcEyeBlink 4.2s steps(1, end) infinite;
}

.mc-avatar-svg .mc-ears {
  transform-origin: center;
  animation: mcEarTwitch 3.4s steps(2, end) infinite;
}

.mc-avatar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(115px, 1fr));
  gap: 8px;
}

.mc-avatar-option {
  border: 1px solid var(--color-border-default);
  background-color: var(--color-canvas-inset);
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  text-align: center;
}

.mc-avatar-option:hover {
  border-color: var(--color-fg-muted);
}

.mc-avatar-option.selected {
  border-color: var(--color-success-fg);
  background-color: #0f1910;
}

.mc-avatar-option-name {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--color-fg-default);
}

.mc-avatar-option-desc {
  font-size: 10px;
  color: var(--color-fg-muted);
}

/* ==============================================================================
   CABECERA UNIX, BARRA DE EJECUCIÓN Y PESTAÑAS
============================================================================== */
.header-bar {
  background-color: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border-default);
  padding: 9px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  background-color: var(--color-success-fg);
  color: #050605;
}

.repo-breadcrumbs {
  font-size: 13px;
  font-weight: 600;
}

.repo-breadcrumbs .owner {
  color: var(--color-success-fg);
}

.repo-breadcrumbs .divider {
  color: var(--color-fg-muted);
}

.repo-breadcrumbs .repo {
  color: var(--color-fg-default);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 9px;
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  padding: 4px 10px;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name-line {
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.user-rank {
  font-size: 10.5px;
  color: var(--color-fg-muted);
}

.rpg-pill,
.streak-pill {
  font-size: 10px;
  font-weight: 700;
  padding: 0 5px;
  border: 1px solid var(--color-border-default);
  background-color: var(--color-canvas-subtle);
  color: var(--color-success-fg);
}

/* Barra de traza de comando UNIX */
.unix-exec-bar {
  background-color: #060806;
  border-bottom: 1px solid var(--color-border-muted);
  padding: 4px 18px;
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-fg-muted);
}

.unix-exec-bar .exec-prompt {
  color: var(--color-success-fg);
  font-weight: 700;
}

.unix-exec-bar .exec-status {
  margin-left: auto;
  color: var(--color-success-fg);
}

/* Navegación de scripts */
.sub-nav {
  background-color: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border-default);
  padding: 0 18px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
}

.nav-tab {
  padding: 8px 12px;
  color: var(--color-fg-muted);
  font-size: 12px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--color-fg-default);
  background-color: var(--color-canvas-subtle);
}

.nav-tab.active {
  color: var(--color-success-fg);
  font-weight: 700;
  border-bottom-color: var(--color-success-fg);
  background-color: var(--color-canvas-inset);
}

.nav-tab-sudo {
  color: var(--color-sudo-fg);
}

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

.tab-counter {
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  color: var(--color-fg-muted);
  font-size: 10px;
  padding: 0 5px;
}

/* ==============================================================================
   BOTONES, PANELES Y CAJAS UNIX
============================================================================== */
.main-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  line-height: 18px;
  cursor: pointer;
  border: 1px solid var(--color-border-default);
  background-color: var(--color-canvas-subtle);
  color: var(--color-fg-default);
  text-decoration: none;
}

.btn:hover {
  border-color: var(--color-success-fg);
  color: var(--color-success-fg);
  background-color: var(--color-canvas-inset);
}

.btn.active {
  border-color: var(--color-success-fg);
  color: var(--color-success-fg);
}

.btn-primary {
  background-color: var(--color-success-fg);
  border-color: var(--color-success-fg);
  color: #050605;
  font-weight: 700;
}

.btn-primary:hover {
  background-color: #78fa9f;
  color: #050605;
}

.btn-sudo {
  border-color: var(--color-sudo-fg);
  color: var(--color-sudo-fg);
  background-color: #19120a;
}

.btn-sudo:hover {
  background-color: var(--color-sudo-fg);
  color: #050605;
}

.btn-danger {
  border-color: var(--color-danger-fg);
  color: var(--color-danger-fg);
}

.btn-danger:hover {
  background-color: var(--color-danger-fg);
  color: #050605;
}

.btn-sm {
  padding: 3px 8px;
  font-size: 11px;
}

.btn-group {
  display: inline-flex;
  gap: 4px;
}

.box {
  background-color: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-default);
  margin-bottom: 16px;
}

.sudo-box {
  border-color: var(--color-sudo-fg);
}

.box-header {
  background-color: var(--color-canvas-inset);
  border-bottom: 1px solid var(--color-border-default);
  padding: 9px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.box-title {
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.box-body {
  padding: 14px;
}

.meta-label {
  font-size: 11px;
  color: var(--color-fg-muted);
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 4px;
}
.status-dot-completed { background-color: var(--color-success-fg); }
.status-dot-pending { background-color: var(--color-attention-fg); }
.status-dot-unlocked { background-color: var(--color-fg-default); }
.status-dot-locked { background-color: var(--color-fg-subtle); }

/* ==============================================================================
   BANNER DISCORD & ROADMAP DE ASIGNATURAS
============================================================================== */
.discord-banner {
  background-color: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-default);
  padding: 11px 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.banner-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.discord-logo-box {
  width: 34px;
  height: 34px;
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 11px;
  color: var(--color-success-fg);
}

.banner-title {
  font-size: 12.5px;
  font-weight: 700;
  margin-bottom: 2px;
}

.banner-subtitle {
  font-size: 11.5px;
  color: var(--color-fg-muted);
  margin-bottom: 2px;
}

.banner-meta {
  font-size: 11px;
  color: var(--color-fg-subtle);
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.banner-actions {
  display: flex;
  gap: 6px;
}

.validation-queue-box {
  border-color: var(--color-attention-emphasis);
}

.roadmap-controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.roadmap-stats {
  font-size: 11px;
  color: var(--color-fg-muted);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.phase-group {
  margin-bottom: 18px;
}

.phase-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  font-weight: 700;
  font-size: 12.5px;
}

.subject-grid,
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 10px;
  padding: 10px;
  background-color: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-default);
  border-top: none;
}

.subject-card {
  background-color: var(--color-canvas-default);
  border: 1px solid var(--color-border-default);
  padding: 11px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.subject-card.status-locked {
  opacity: 0.6;
}

.subject-code-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  margin-bottom: 5px;
}

.subject-code {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--color-success-fg);
}

.subject-status-pill {
  font-size: 10px;
  font-weight: 700;
  padding: 0 5px;
  border: 1px solid var(--color-border-default);
}

.status-pill-completed {
  color: var(--color-success-fg);
  border-color: var(--color-success-emphasis);
}

.status-pill-pending {
  color: var(--color-attention-fg);
  border-color: var(--color-attention-emphasis);
}

.status-pill-unlocked {
  color: var(--color-fg-default);
}

.status-pill-locked {
  color: var(--color-fg-subtle);
}

.subject-title {
  font-weight: 700;
  font-size: 12.5px;
  margin-bottom: 4px;
  color: var(--color-fg-default);
}

.subject-meta {
  font-size: 11px;
  color: var(--color-fg-muted);
  margin-bottom: 5px;
}

.subject-skill-tag {
  font-size: 10.5px;
  color: var(--color-fg-muted);
  margin-bottom: 6px;
  border-left: 2px solid var(--color-border-default);
  padding-left: 6px;
}

.subject-prereqs {
  font-size: 10.5px;
  color: var(--color-fg-subtle);
  margin-bottom: 8px;
}

.prereq-code {
  display: inline-block;
  border: 1px solid var(--color-border-default);
  padding: 0 4px;
  margin-right: 3px;
}

.prereq-code.done {
  color: var(--color-success-fg);
  border-color: var(--color-success-emphasis);
}

.subject-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border-muted);
}

.peer-inline-notice {
  margin-top: 6px;
  padding: 6px 8px;
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-attention-emphasis);
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

/* ==============================================================================
   LISTAS, HEATMAP Y TABLA DE GRUPO
============================================================================== */
.header-controls-inline {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.item-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--color-border-muted);
}

.item-row:last-child {
  border-bottom: none;
}

.item-content {
  flex: 1;
}

.item-title-line {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.item-title {
  font-weight: 700;
  font-size: 12.5px;
}

.tag-label {
  font-size: 10px;
  padding: 0 5px;
  border: 1px solid var(--color-border-default);
  background-color: var(--color-canvas-inset);
  color: var(--color-fg-muted);
}

.tag-label.tag-open {
  color: var(--color-attention-fg);
  border-color: var(--color-attention-emphasis);
}

.tag-label.tag-merged {
  color: var(--color-success-fg);
  border-color: var(--color-success-emphasis);
}

.item-subtitle {
  font-size: 11.5px;
  color: var(--color-fg-muted);
}

.pr-reviews-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 6px;
  font-size: 11px;
}

.review-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  border: 1px solid var(--color-success-emphasis);
  color: var(--color-success-fg);
  background-color: var(--color-canvas-inset);
}

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
  margin-bottom: 14px;
}

.metric-item {
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  padding: 9px 11px;
}

.metric-label {
  font-size: 10.5px;
  color: var(--color-fg-muted);
}

.metric-value {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-success-fg);
}

.heatmap-wrapper {
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  padding: 12px;
  overflow-x: auto;
}

.heatmap-grid {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  grid-auto-flow: column;
  grid-auto-columns: 12px;
  gap: 3px;
  margin-top: 6px;
}

.heat-cell {
  width: 12px;
  height: 12px;
  background-color: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-muted);
}

.heat-lvl-0 { background-color: var(--color-canvas-subtle); }
.heat-lvl-1 { background-color: #14532d; }
.heat-lvl-2 { background-color: #166534; }
.heat-lvl-3 { background-color: #15803d; }
.heat-lvl-4 { background-color: #5af78e; }

.heatmap-legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  font-size: 10.5px;
  color: var(--color-fg-muted);
  margin-top: 8px;
}

.table-primer {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.table-primer th {
  background-color: var(--color-canvas-inset);
  border-bottom: 1px solid var(--color-border-default);
  padding: 8px 12px;
  font-size: 11px;
  color: var(--color-fg-muted);
  font-weight: 700;
}

.table-primer td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border-muted);
  font-size: 12px;
}

.table-primer tr.is-current-user td {
  background-color: #0e170e;
}

/* ==============================================================================
   BARRA DE ESTADO INFERIOR ESTILO TMUX
============================================================================== */
.unix-tmux-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 24px;
  background-color: #161b16;
  border-top: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  z-index: 900;
}

.tmux-left,
.tmux-right {
  display: flex;
  align-items: center;
}

.tmux-session {
  background-color: var(--color-success-fg);
  color: #050605;
  font-weight: 700;
  padding: 0 8px;
  height: 24px;
  display: inline-flex;
  align-items: center;
}

.tmux-item {
  padding: 0 10px;
  color: var(--color-fg-muted);
  border-right: 1px solid var(--color-border-default);
}

.tmux-clock {
  background-color: #242c24;
  color: var(--color-fg-default);
  font-weight: 700;
  padding: 0 10px;
  height: 24px;
  display: inline-flex;
  align-items: center;
}

/* ==============================================================================
   MODALES & FICHAS DE SKILLS
============================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.modal-card {
  background-color: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-default);
  width: 100%;
  max-width: 540px;
  box-shadow: 0 0 0 1px #444;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: 10px 14px;
  background-color: var(--color-canvas-inset);
  border-bottom: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-success-fg);
}

.modal-body {
  padding: 14px;
}

.modal-footer {
  padding: 10px 14px;
  border-top: 1px solid var(--color-border-default);
  background-color: var(--color-canvas-inset);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.verification-notice {
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
  padding: 10px 12px;
  font-size: 11.5px;
  color: var(--color-fg-muted);
  margin-bottom: 12px;
}

.skills-list-box {
  border: 1px solid var(--color-border-default);
  background-color: var(--color-canvas-inset);
  max-height: 260px;
  overflow-y: auto;
  padding: 8px 10px;
}

.skill-item-row {
  padding: 5px 0;
  border-bottom: 1px dashed var(--color-border-muted);
  font-size: 11.5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.skill-item-row:last-child {
  border-bottom: none;
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 11.5px;
  font-weight: 700;
  margin-bottom: 4px;
}

.form-help {
  display: block;
  font-size: 10.5px;
  color: var(--color-fg-muted);
  margin-top: 3px;
}

.xp-preview-line {
  font-size: 11.5px;
  color: var(--color-success-fg);
  padding: 6px 8px;
  background-color: var(--color-canvas-inset);
  border: 1px solid var(--color-border-default);
}

.form-control {
  width: 100%;
  padding: 6px 8px;
  font-size: 12px;
  background-color: var(--color-canvas-default);
  border: 1px solid var(--color-border-default);
  color: var(--color-fg-default);
  font-family: var(--font-mono);
}

.form-control-sm {
  width: auto;
  padding: 4px 8px;
  font-size: 11.5px;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-success-fg);
}

.toast-container {
  position: fixed;
  bottom: 34px;
  right: 18px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background-color: var(--color-canvas-subtle);
  border: 1px solid var(--color-success-fg);
  padding: 9px 13px;
  font-size: 12px;
  color: var(--color-fg-default);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.toast-error {
  border-color: var(--color-danger-emphasis);
  color: var(--color-danger-fg);
}

.toast.toast-warning {
  border-color: var(--color-attention-emphasis);
  color: var(--color-attention-fg);
}

/* ==========================================================================
   SUPPORT TICKETS & ASISTENCIA FORUM STYLES
   ========================================================================== */
.ticket-thread-box {
  background-color: var(--color-canvas-default);
  border: 1px solid var(--color-border-default);
  padding: 12px;
  margin-bottom: 12px;
}

.ticket-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border-muted);
}

.ticket-tag {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border: 1px solid var(--color-border-default);
  display: inline-block;
}

.ticket-tag-open {
  border-color: var(--color-attention-emphasis);
  color: var(--color-attention-fg);
}

.ticket-tag-resolved, .ticket-tag-closed {
  border-color: var(--color-success-emphasis);
  color: var(--color-success-fg);
}

.ticket-messages-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 280px;
  overflow-y: auto;
  padding: 8px;
  background-color: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-subtle);
  margin-bottom: 10px;
}

.ticket-msg-item {
  padding: 8px 10px;
  border: 1px solid var(--color-border-muted);
  background-color: var(--color-canvas-default);
  font-size: 11.5px;
}

.ticket-msg-item.msg-admin {
  border-left: 3px solid var(--color-accent-emphasis);
  background-color: #0c1524;
}

.ticket-msg-item.msg-system {
  border-left: 3px solid var(--color-attention-emphasis);
  font-style: italic;
  color: var(--color-fg-muted);
}

.ticket-msg-meta {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--color-fg-subtle);
  margin-bottom: 4px;
}

.requested-subjects-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
}

.cpu-locked-banner {
  background-color: #1a1608;
  border: 1px solid var(--color-attention-emphasis);
  color: var(--color-attention-fg);
  padding: 8px 12px;
  font-size: 11px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.lock-reason-banner {
  background-color: #1c0d0d;
  border: 1px solid var(--color-danger-emphasis);
  color: #ff7b72;
  font-size: 10.5px;
  padding: 4px 6px;
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.student-subject-toggle-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border-muted);
  font-size: 11.5px;
}

.student-subject-toggle-item:hover {
  background-color: var(--color-canvas-subtle);
}

.mc-inline-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 0;
  flex-shrink: 0;
}

.mc-avatar-preview {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
}

/* ==============================================================================
   RESPONSIVE DESIGN & ADAPTIVE LAYOUT (PHONES, TABLETS, LAPTOPS & DESKTOPS)
============================================================================== */

/* Wrapper responsivo para tablas con inercia táctil */
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 12px;
  border: 1px solid var(--color-border-default);
  background-color: var(--color-canvas-subtle);
}

.table-responsive-wrapper table {
  margin-bottom: 0;
  min-width: 580px;
}

/* Filas de Solicitudes y Certificados PR */
.pr-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  padding: 12px;
  border-bottom: 1px solid var(--color-border-muted);
  background-color: var(--color-canvas-default);
}

.pr-row:hover {
  background-color: var(--color-canvas-subtle);
}

.pr-main {
  flex: 1;
  min-width: 0;
}

.pr-side {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.pr-title-line {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.pr-desc {
  font-size: 11.5px;
  color: var(--color-fg-muted);
  margin-bottom: 6px;
}

.pr-meta-line {
  font-size: 11px;
  color: var(--color-fg-subtle);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.pr-reviews-line {
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.reviewer-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 6px;
  border: 1px solid var(--color-success-emphasis);
  background-color: var(--color-canvas-inset);
  color: var(--color-success-fg);
  font-size: 10.5px;
}

/* ==============================================================================
   BREAKPOINT: TABLETS Y LAPTOPS PEQUEÑAS (max-width: 1024px)
============================================================================== */
@media (max-width: 1024px) {
  .main-container {
    padding: 14px 12px;
  }

  .subjects-grid,
  .subject-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 8px;
  }

  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-card {
    max-width: 90vw;
  }
}

/* ==============================================================================
   BREAKPOINT: CELULARES Y TABLETS EN MODO VERTICAL (max-width: 768px)
============================================================================== */
@media (max-width: 768px) {
  body {
    font-size: 12px;
  }

  .header-bar {
    padding: 8px 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .brand-section {
    width: 100%;
    justify-content: space-between;
  }

  .repo-breadcrumbs {
    font-size: 11.5px;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    padding-bottom: 4px;
    gap: 6px;
  }

  .header-actions .btn {
    flex-shrink: 0;
    min-height: 36px;
    padding: 6px 10px;
    font-size: 11px;
  }

  .user-badge {
    flex-shrink: 0;
    padding: 4px 8px;
  }

  .unix-exec-bar {
    padding: 4px 12px;
    font-size: 10px;
    overflow-x: auto;
    white-space: nowrap;
  }

  .sub-nav {
    padding: 0 8px;
    gap: 2px;
    scrollbar-width: none;
  }

  .sub-nav::-webkit-scrollbar {
    display: none;
  }

  .nav-tab {
    padding: 8px 10px;
    font-size: 11px;
    min-height: 38px;
    flex-shrink: 0;
  }

  .roadmap-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .roadmap-controls select {
    width: 100%;
  }

  .roadmap-stats {
    flex-direction: column;
    gap: 4px;
    font-size: 10.5px;
  }

  .phase-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .phase-progress-wrap {
    width: 100%;
    justify-content: space-between;
  }

  .pr-row {
    flex-direction: column;
    gap: 10px;
  }

  .pr-side {
    width: 100%;
    align-items: stretch;
  }

  .pr-side .btn {
    width: 100%;
    min-height: 38px;
  }

  .discord-banner {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .discord-banner .banner-right {
    width: 100%;
    display: flex;
    justify-content: stretch;
  }

  .discord-banner .banner-right .btn {
    width: 100%;
    min-height: 38px;
  }
}

/* ==============================================================================
   BREAKPOINT: CELULARES COMPACTOS (max-width: 600px)
============================================================================== */
@media (max-width: 600px) {
  .main-container {
    padding: 8px 6px;
  }

  .subjects-grid,
  .subject-grid {
    grid-template-columns: 1fr;
    padding: 6px;
    gap: 8px;
  }

  .subject-card {
    padding: 10px;
  }

  .subject-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .subject-actions .btn {
    width: 100%;
    min-height: 38px;
  }

  .subject-links {
    display: flex;
    gap: 6px;
    width: 100%;
  }

  .subject-links .btn {
    flex: 1;
    min-height: 34px;
  }

  /* Modales estilo Bottom-Sheet en Smartphones */
  .modal-overlay {
    padding: 6px;
    align-items: flex-end;
  }

  .modal-card {
    width: 100% !important;
    max-width: 100% !important;
    max-height: 94vh;
    border-bottom: none;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.8);
  }

  .modal-header {
    padding: 8px 12px;
  }

  .modal-body {
    padding: 12px 10px;
  }

  .modal-footer {
    flex-direction: column;
    gap: 6px;
    padding: 10px 12px;
  }

  .modal-footer .btn {
    width: 100%;
    min-height: 40px;
  }

  /* Prevenir zoom automático molesto en inputs de iOS Safari */
  .form-control,
  input[type="text"],
  input[type="number"],
  input[type="url"],
  input[type="date"],
  select,
  textarea {
    font-size: 16px !important;
  }

  /* Consola VT100 en Mobile */
  .unix-terminal-window {
    border-left: none;
    border-right: none;
  }

  .unix-terminal-body {
    padding: 12px 8px;
    min-height: 320px;
  }

  .unix-login-overlay {
    padding: 0;
  }

  .unix-tmux-bar {
    font-size: 10px;
    padding-left: 6px;
    padding-right: 6px;
  }

  .unix-tmux-bar .tmux-item:nth-child(n+3) {
    display: none;
  }

  .metrics-strip {
    grid-template-columns: 1fr;
  }
}

/* ==============================================================================
   BREAKPOINT: PANTALLAS ULTRA PEQUEÑAS (max-width: 380px)
============================================================================== */
@media (max-width: 380px) {
  .brand-mark {
    display: none;
  }

  .user-badge {
    gap: 6px;
  }

  .user-name-line {
    font-size: 11px;
  }

  .rpg-pill,
  .streak-pill {
    display: none;
  }
}