/* =============================================
   DIGITAL SH*TS UP — Design System
   ============================================= */

:root {
  /* Colores */
  --color-primary: #95eb00;
  --color-primary-dim: rgba(149, 235, 0, 0.12);
  --color-primary-glow: rgba(149, 235, 0, 0.25);
  --color-secondary: #3B82F6;
  --color-secondary-dim: rgba(59, 130, 246, 0.12);
  --color-dark: #0A0F1C;
  --color-dark-2: #0F172A;
  --color-dark-3: #1E293B;
  --color-dark-4: #263044;
  --color-surface: #162033;
  --color-border: rgba(255,255,255,0.08);
  --color-border-primary: rgba(149, 235, 0, 0.3);
  --color-text: #F1F5F9;
  --color-text-muted: #94A3B8;
  --color-text-dim: #64748B;

  /* Callout colores */
  --color-tip: #22C55E;
  --color-tip-bg: rgba(34, 197, 94, 0.08);
  --color-warning: #F59E0B;
  --color-warning-bg: rgba(245, 158, 11, 0.08);
  --color-exercise: #A855F7;
  --color-exercise-bg: rgba(168, 85, 247, 0.08);
  --color-challenge: #EF4444;
  --color-challenge-bg: rgba(239, 68, 68, 0.08);
  --color-info: #3B82F6;
  --color-info-bg: rgba(59, 130, 246, 0.08);

  /* Tipografía */
  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

  /* Espaciado */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Radios */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 24px rgba(149, 235, 0, 0.15);
  --shadow-blue: 0 0 24px rgba(59, 130, 246, 0.2);

  /* Transición */
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --sidebar-width: 320px;
  --header-height: 64px;
  --content-max: 680px;
}

/* =============================================
   Reset & Base
   ============================================= */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--color-dark);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
}

::selection {
  background: var(--color-primary);
  color: var(--color-dark);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover { opacity: 0.8; }

img { max-width: 100%; height: auto; }

/* =============================================
   Progress Bar (Top)
   ============================================= */

#progress-bar-top {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  z-index: 999;
  transition: width 300ms ease;
}

/* =============================================
   Header
   ============================================= */

.header {
  position: fixed;
  top: 3px;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 15, 28, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
}

.header__logo-text {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.header__logo-text span {
  color: var(--color-primary);
}

.header__badge {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid var(--color-border-primary);
  padding: 2px 8px;
  border-radius: 99px;
  white-space: nowrap;
}

.header__meta {
  font-size: 0.78rem;
  color: var(--color-text-dim);
  text-align: right;
  flex-shrink: 0;
}

.header__meta strong {
  color: var(--color-text-muted);
}

/* =============================================
   Layout Principal
   ============================================= */

.layout {
  display: flex;
  padding-top: calc(var(--header-height) + 3px);
  min-height: 100vh;
}

/* =============================================
   Sidebar
   ============================================= */

.sidebar {
  display: none;
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-height) + 3px);
  height: calc(100vh - var(--header-height) - 3px);
  overflow-y: auto;
  border-right: 1px solid var(--color-border);
  padding: var(--space-6) var(--space-4);
  scrollbar-width: thin;
  scrollbar-color: var(--color-dark-4) transparent;
  background: linear-gradient(180deg, rgba(149, 235, 0, 0.01) 0%, transparent 40%);
}

@media (min-width: 1024px) {
  .sidebar { display: block; }
}

.sidebar__title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  opacity: 0.75;
  margin-bottom: var(--space-4);
  padding: 0 var(--space-2);
}

.sidebar__progress {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  padding: 0 var(--space-2);
}

.sidebar__progress-bar {
  flex: 1;
  height: 4px;
  background: var(--color-dark-4);
  border-radius: 99px;
  overflow: hidden;
}

.sidebar__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 99px;
  transition: width 400ms ease;
  width: 0%;
}

.sidebar__progress-text {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.sidebar__nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  color: var(--color-text);
  font-size: 0.825rem;
  line-height: 1.4;
  border: 1px solid transparent;
  border-left: 3px solid transparent;
  background: rgba(31, 41, 55, 0.5);
}

.sidebar__item:hover {
  background: rgba(149, 235, 0, 0.12);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

.sidebar__item.active {
  background: rgba(149, 235, 0, 0.15);
  border-left-color: var(--color-primary);
  color: var(--color-primary);
}

.sidebar__item-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-text);
  min-width: 18px;
  text-align: center;
}

.sidebar__item.active .sidebar__item-num {
  color: var(--color-primary);
}

.sidebar__item-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-dark-4);
  flex-shrink: 0;
  transition: all var(--transition);
  box-shadow: inset 0 0 2px rgba(149, 235, 0, 0.3);
}

.sidebar__item.done .sidebar__item-dot {
  background: var(--color-tip);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.6), inset 0 0 2px rgba(255, 255, 255, 0.4);
}

.sidebar__separator {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--space-3) var(--space-2);
}

.sidebar__group-header {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding: var(--space-2) var(--space-3) var(--space-1);
  margin-top: var(--space-2);
}

/* =============================================
   Content Area
   ============================================= */

.content {
  flex: 1;
  min-width: 0;
  overflow-x: clip; /* evita scroll horizontal por block-header a pantalla completa */
  padding: var(--space-8) var(--space-6) calc(var(--space-16) + 60px);
}

.content-panel {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* =============================================
   Sección de contenido
   ============================================= */

.section {
  padding: var(--space-10) 0;
  border-bottom: 1px solid var(--color-border);
}

.section:last-child {
  border-bottom: none;
}

.section__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: var(--space-4);
}

.section__tag::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.section__title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.section__title .highlight {
  color: var(--color-primary);
}

.section__subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

/* =============================================
   Hero
   ============================================= */

.hero {
  padding: var(--space-12) 0 var(--space-10);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: var(--color-primary-glow);
  filter: blur(80px);
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid var(--color-border-primary);
  padding: var(--space-2) var(--space-4);
  border-radius: 99px;
  margin-bottom: var(--space-6);
}

.hero__eyebrow svg {
  width: 14px;
  height: 14px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-5);
}

.hero__title .neon {
  color: var(--color-primary);
  text-shadow: 0 0 30px rgba(149, 235, 0, 0.4);
}

.hero__description {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: var(--space-8);
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.hero__stat {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.hero__stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

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

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary);
  color: var(--color-dark);
  font-weight: 700;
  font-size: 0.95rem;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  box-shadow: var(--shadow-glow);
}

.hero__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 32px rgba(149, 235, 0, 0.3);
  opacity: 1;
  color: var(--color-dark);
}

/* =============================================
   Tipografía de contenido
   ============================================= */

.prose h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: var(--space-8) 0 var(--space-3);
  color: var(--color-text);
}

.prose h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: var(--space-6) 0 var(--space-3);
  color: var(--color-text);
}

.prose p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.75;
}

.prose p strong {
  color: var(--color-text);
  font-weight: 600;
}

.prose ul, .prose ol {
  margin: var(--space-4) 0;
  padding-left: var(--space-6);
  color: var(--color-text-muted);
}

.prose li {
  margin-bottom: var(--space-2);
  line-height: 1.7;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-dark-3);
  color: var(--color-primary);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

/* =============================================
   Callout Boxes
   ============================================= */

.callout {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius);
  border-left: 3px solid;
  margin: var(--space-6) 0;
}

.callout--tip {
  background: var(--color-tip-bg);
  border-color: var(--color-tip);
}

.callout--warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning);
}

.callout--exercise {
  background: var(--color-exercise-bg);
  border-color: var(--color-exercise);
}

.callout--challenge {
  background: var(--color-challenge-bg);
  border-color: var(--color-challenge);
}

.callout--info {
  background: var(--color-info-bg);
  border-color: var(--color-info);
}

.callout__icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  line-height: 1.5;
}

.callout__body {
  flex: 1;
  min-width: 0;
}

.callout__title {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.callout--tip    .callout__title { color: var(--color-tip); }
.callout--warning .callout__title { color: var(--color-warning); }
.callout--exercise .callout__title { color: var(--color-exercise); }
.callout--challenge .callout__title { color: var(--color-challenge); }
.callout--info   .callout__title { color: var(--color-info); }

.callout__body p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.65;
}

/* =============================================
   Code Blocks
   ============================================= */

.code-block {
  background: var(--color-dark-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: var(--space-5) 0;
}

.code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-dark-3);
  border-bottom: 1px solid var(--color-border);
}

.code-block__dots {
  display: flex;
  gap: 6px;
}

.code-block__dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-block__dots span:nth-child(1) { background: #EF4444; }
.code-block__dots span:nth-child(2) { background: #F59E0B; }
.code-block__dots span:nth-child(3) { background: #22C55E; }

.code-block__lang {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
}

.code-block__copy {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-dim);
  background: transparent;
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

.code-block__copy:hover {
  color: var(--color-primary);
  border-color: var(--color-border-primary);
  background: var(--color-primary-dim);
}

.code-block__copy.copied {
  color: var(--color-tip);
  border-color: var(--color-tip);
}

.code-block__body {
  padding: var(--space-5);
  overflow-x: auto;
}

.code-block__body pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre;
}

.code-block__body .comment { color: var(--color-text-dim); }
.code-block__body .keyword { color: var(--color-primary); }
.code-block__body .string  { color: #86EFAC; }
.code-block__body .cmd     { color: var(--color-secondary); }

/* =============================================
   Prompt Blocks
   ============================================= */

.prompt-block {
  background: linear-gradient(135deg, rgba(149, 235, 0, 0.04), rgba(59, 130, 246, 0.04));
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-6) 0;
}

.prompt-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: var(--color-primary-dim);
  border-bottom: 1px solid var(--color-border-primary);
}

.prompt-block__label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.prompt-block__body {
  padding: var(--space-5) var(--space-5) var(--space-4);
}

.prompt-block__body p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-3);
  line-height: 1.7;
}

.prompt-block__body p:last-child {
  margin-bottom: 0;
}

.prompt-block__copy {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3);
  background: transparent;
  border: none;
  border-top: 1px solid var(--color-border-primary);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
  font-family: var(--font);
}

.prompt-block__copy:hover {
  background: var(--color-primary-dim);
}

.prompt-block__copy.copied {
  color: var(--color-tip);
}

/* =============================================
   Checklists
   ============================================= */

.checklist {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  margin: var(--space-5) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checklist__title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: var(--space-2);
}

.checklist__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.checklist__item:hover {
  background: var(--color-dark-3);
}

.checklist__item input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-dark-4);
  border-radius: 4px;
  flex-shrink: 0;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.checklist__item input[type="checkbox"]:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checklist__item input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-dark);
  font-size: 11px;
  font-weight: 900;
  line-height: 1;
}

.checklist__item-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  transition: color var(--transition);
}

.checklist__item input:checked + .checklist__item-text {
  color: var(--color-text-dim);
  text-decoration: line-through;
}

/* =============================================
   Acordeones / Details
   ============================================= */

.details-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: var(--space-4) 0;
}

.details-block summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
  list-style: none;
  user-select: none;
  transition: background var(--transition);
}

.details-block summary:hover {
  background: var(--color-dark-3);
}

.details-block summary::after {
  content: '▸';
  font-size: 0.7rem;
  color: var(--color-text-dim);
  transition: transform var(--transition);
}

.details-block[open] summary::after {
  transform: rotate(90deg);
}

.details-block__content {
  padding: var(--space-5);
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.details-block__content p {
  margin-bottom: var(--space-3);
}

.details-block__content p:last-child {
  margin-bottom: 0;
}

/* =============================================
   Stepper
   ============================================= */

.stepper {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: var(--space-6) 0;
}

.stepper__step {
  display: flex;
  gap: var(--space-5);
  position: relative;
}

.stepper__step:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-border));
}

.stepper__left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  padding-top: 2px;
}

.stepper__num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-dark);
  font-weight: 800;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 16px rgba(149, 235, 0, 0.3);
}

.stepper__body {
  flex: 1;
  padding-bottom: var(--space-8);
}

.stepper__step:last-child .stepper__body {
  padding-bottom: 0;
}

.stepper__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  margin-top: var(--space-2);
}

.stepper__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* =============================================
   Tablas
   ============================================= */

.table-wrapper {
  overflow-x: auto;
  margin: var(--space-6) 0;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead {
  background: var(--color-dark-3);
}

thead th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  border-bottom: 1px solid var(--color-border);
}

tbody td {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--color-dark-3);
}

td.highlight {
  color: var(--color-primary);
  font-weight: 600;
}

/* =============================================
   Tag / Badges
   ============================================= */

.tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
}

.tag--green  { background: rgba(34, 197, 94, 0.12); color: #22C55E; }
.tag--yellow { background: var(--color-primary-dim); color: var(--color-primary); }
.tag--blue   { background: var(--color-secondary-dim); color: var(--color-secondary); }
.tag--purple { background: rgba(168, 85, 247, 0.12); color: #A855F7; }

/* =============================================
   Divider
   ============================================= */

.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-8) 0;
}

.divider--glow {
  background: linear-gradient(90deg, transparent, var(--color-primary-glow), transparent);
}

/* =============================================
   Block Header (Inicio de bloque)
   ============================================= */

.block-header {
  background: linear-gradient(135deg, var(--color-dark-2), var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-8);
  margin-bottom: var(--space-8);
  margin-left: calc(-1 * var(--space-6));
  margin-right: calc(-1 * var(--space-6));
  position: relative;
  overflow: hidden;
}

.block-header::after {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--color-primary-glow);
  filter: blur(60px);
  pointer-events: none;
}

.block-header__num {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.block-header__title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.block-header__desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 500px;
}

.block-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.block-header__chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-dark-3);
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
}

/* =============================================
   Footer Navigation
   ============================================= */

.footer-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 15, 28, 0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  z-index: 50;
}

.footer-nav__info {
  font-size: 0.78rem;
  color: var(--color-text-dim);
  text-align: center;
  flex: 1;
}

.footer-nav__info strong {
  color: var(--color-text-muted);
}

.btn-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  transition: all var(--transition);
  font-family: var(--font);
  white-space: nowrap;
}

.btn-nav:hover:not(:disabled) {
  border-color: var(--color-border-primary);
  color: var(--color-primary);
  background: var(--color-primary-dim);
}

.btn-nav:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn-nav--primary {
  background: var(--color-primary);
  color: var(--color-dark);
  border-color: var(--color-primary);
}

.btn-nav--primary:hover:not(:disabled) {
  background: #a8f000;
  color: var(--color-dark);
  opacity: 1;
}

/* =============================================
   Scrollbar personalizado
   ============================================= */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-dark-4);
  border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-dim);
}

/* =============================================
   Utilities
   ============================================= */

.text-neon { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.text-dim { color: var(--color-text-dim); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

/* =============================================
   Responsive
   ============================================= */

@media (max-width: 768px) {
  .content {
    padding: var(--space-5) var(--space-4) calc(var(--space-12) + 60px);
  }

  .header {
    padding: 0 var(--space-4);
    gap: var(--space-3);
  }

  .header__tab {
    padding: var(--space-2) var(--space-3);
    font-size: 0.8rem;
  }

  .section__title {
    font-size: 1.4rem;
  }

  .block-header {
    padding: var(--space-6);
  }

  .hero__stats {
    gap: var(--space-3);
  }

  .footer-nav {
    padding: var(--space-3) var(--space-4);
  }

  .footer-nav__info { display: none; }
}

@media (max-width: 480px) {
  .header__logo-text { font-size: 0.95rem; }
  .header__badge { display: none; }
}