/* ============================================================
   style.css — NullTrace Pentest Tool
   Paleta: azul medianoche + cian eléctrico + violeta profundo
   ============================================================ */

/* === IMPORTS === */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Inter:wght@300;400;500&family=JetBrains+Mono:wght@400&display=swap');

/* === CUSTOM PROPERTIES === */
:root {
  --bg:           #070b14;
  --bg-mid:       #0c1220;
  --bg-alt:       #0a0f1c;
  --surface:      #111827;
  --surface-2:    #151e30;
  --border:       #1e2d45;
  --border-light: #243350;
  --text-primary: #e8f0fe;
  --text-muted:   #5b7499;

  /* Acento principal — cian eléctrico */
  --cyan:              #00d4ff;
  --cyan-dim:          #003d57;
  --cyan-glow:         rgba(0, 212, 255, 0.10);
  --cyan-glow-strong:  rgba(0, 212, 255, 0.18);

  /* Acento secundario — violeta */
  --violet:       #7c3aed;
  --violet-light: #a78bfa;
  --violet-dim:   #2d1654;
  --violet-glow:  rgba(124, 58, 237, 0.12);

  /* Verde terminal */
  --green:        #10b981;
}

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

/* === BASE === */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  min-height: 100vh;
  /* Malla de puntos azul muy sutil — da textura sin ser agresiva */
  background-image:
    radial-gradient(circle, rgba(0, 212, 255, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover { opacity: 0.75; }

a:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 3px;
}

button:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 3px;
}

/* === TIPOGRAFÍA === */
h1 {
  font-family: 'Orbitron', monospace;
  font-size: 72px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: linear-gradient(45deg, var(--text-primary), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 28px;
  font-weight: 300;
  line-height: 1.3;
  color: var(--text-primary);
}

h3 {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--text-primary);
}

p { color: var(--text-muted); }

code, pre, .mono {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
}

/* === LAYOUT === */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === NAV === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav__brand {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__link {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav__link:hover {
  color: var(--text-primary);
  opacity: 1;
}

.nav__link--active { color: var(--cyan); }

/* === HERO (index) === */
.hero {
  padding: 140px 0 120px;
  border-bottom: 1px solid var(--border);
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1510511459019-5dda7724fd87?w=1600&q=80&fit=crop');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  isolation: isolate;
}

/* Overlay oscuro para legibilidad */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(5, 8, 18, 0.96) 0%,
    rgba(7, 14, 35, 0.88) 55%,
    rgba(12, 20, 50, 0.72) 100%
  );
  z-index: -1;
}

/* Resplandor cian decorativo esquina superior derecha */
.hero::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.13) 0%, transparent 65%);
  z-index: -1;
  pointer-events: none;
}

.hero h1 {
  position: relative;
  display: inline-block;
}

/* Línea decorativa bajo el H1 con degradado cian → violeta */
.hero h1::after {
  content: '';
  display: block;
  width: 56px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet-light));
  margin-top: 20px;
}

.hero__tagline {
  font-size: 20px;
  font-weight: 300;
  color: rgba(200, 220, 255, 0.70);
  margin-top: 20px;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
}

/* === BOTONES === */
.btn {
  display: inline-block;
  padding: 12px 24px;
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 14px;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.2s, background-color 0.2s;
  border: none;
  text-align: center;
}

.btn--primary {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  color: #ffffff;
  letter-spacing: 0.01em;
}

.btn--primary:hover {
  background: linear-gradient(135deg, #0ea5e9, #38bdf8);
  opacity: 1;
}

.btn--outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn--outline:hover {
  border-color: var(--cyan-dim);
  background-color: var(--cyan-glow);
  opacity: 1;
}

.btn--full {
  display: block;
  width: 100%;
  padding: 14px;
}

/* === SECCIÓN: QUÉ ES === */
/* Fondo alternado — azul marino con tinte cian izquierdo */
.what {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-alt);
  background-image: linear-gradient(
    160deg,
    rgba(0, 212, 255, 0.05) 0%,
    transparent 50%
  );
}

.what__description {
  margin-top: 20px;
  max-width: 640px;
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

.what__metrics {
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 48px;
  flex-wrap: wrap;
}

.what__metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 32px;
}

.what__metric:first-child { padding-left: 0; }

.what__metric + .what__metric {
  border-left: 1px solid var(--border);
}

.what__metric-label {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.what__metric-value {
  font-size: 15px;
  font-weight: 400;
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
}

/* === SECCIÓN: CARACTERÍSTICAS === */
/* Fondo con tinte violeta — crea alternancia visual con las demás secciones */
.features {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-mid);
  background-image: linear-gradient(
    200deg,
    rgba(124, 58, 237, 0.07) 0%,
    transparent 50%
  );
}

.features__header { margin-bottom: 48px; }
.features__heading { margin-bottom: 0; }

.features__subheading {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 300;
  letter-spacing: 0.02em;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background-color: var(--border);
  align-items: stretch;
}

/* === FEATURE CARD === */
.feature-card {
  background-color: var(--bg-mid);
  padding: 32px 28px;
  border: 1px solid var(--border);
  transition: border-color 0.2s, background-color 0.2s;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  border-color: var(--cyan-dim);
  background-color: var(--cyan-glow);
}

.feature-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.feature-card__number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.05em;
}

.feature-card__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: 1px solid var(--cyan-dim);
  padding: 3px 8px;
  border-radius: 2px;
  background-color: rgba(0, 212, 255, 0.05);
}

.feature-card__title {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.feature-card__description {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  flex-grow: 1;
}

.feature-card__bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.feature-card__bullets li {
  font-size: 12px;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}

.feature-card__bullets li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-size: 10px;
  top: 2px;
}

/* === SECCIÓN: INSTALACIÓN === */
.install {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-alt);
  background-image: linear-gradient(
    340deg,
    rgba(0, 212, 255, 0.04) 0%,
    transparent 45%
  );
}

.install__heading { margin-bottom: 48px; }

.install__steps {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* === SEPARADOR DE OS === */
.install__os-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 400;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Punto de color como indicador visual */
.install__os-label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cyan);
  flex-shrink: 0;
}

.install__os-label:first-of-type { margin-top: 0; }

/* === TERMINAL === */
.terminal-block {
  display: flex;
  flex-direction: column;
}

.terminal-block__header {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.terminal-block__code {
  background-color: var(--surface);
  padding: 20px 24px;
  border-radius: 4px;
  overflow-x: auto;
  border-left: 2px solid var(--cyan);
  box-shadow: -4px 0 20px rgba(0, 212, 255, 0.07);
}

.terminal-block__line {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.6;
}

.terminal-block__line + .terminal-block__line { margin-top: 6px; }

.terminal-block__prompt {
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  user-select: none;
  flex-shrink: 0;
}

.terminal-block__command {
  color: #e8f0fe;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
}

/* Output del terminal en verde — contrasta con los comandos blancos */
.terminal-block__output {
  color: var(--green);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  padding-left: 20px;
}

/* === PASOS WINDOWS === */
.install__steps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.install__step-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
  transition: background-color 0.2s;
}

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

.install__step-item:hover { background-color: var(--cyan-glow); }

.install__step-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--cyan);
  flex-shrink: 0;
  padding-top: 3px;
  letter-spacing: 0.05em;
}

.install__step-text {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

.install__step-link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* === SECTION HERO (authors / download) === */
.section-hero {
  padding: 110px 0 72px;
  border-bottom: 1px solid var(--border);
  position: relative;
  isolation: isolate;
}

.page-authors .section-hero {
  background-image: url('https://images.unsplash.com/photo-1526374965328-7f61d4dc18c5?w=1600&q=80&fit=crop');
  background-size: cover;
  background-position: center 30%;
}

.page-download .section-hero {
  background-image: url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?w=1600&q=80&fit=crop');
  background-size: cover;
  background-position: center 40%;
}

.section-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(5, 8, 18, 0.96) 0%,
    rgba(7, 14, 35, 0.88) 55%,
    rgba(12, 20, 50, 0.72) 100%
  );
  z-index: -1;
}

/* Resplandor violeta decorativo en heroes de secciones internas */
.section-hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.10) 0%, transparent 65%);
  z-index: -1;
  pointer-events: none;
}

.section-hero h1 {
  position: relative;
  display: inline-block;
}

.section-hero h1::after {
  content: '';
  display: block;
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet-light));
  margin-top: 16px;
}

.section-hero__subtitle {
  font-size: 16px;
  font-weight: 300;
  color: rgba(200, 220, 255, 0.60);
  margin-top: 12px;
}

/* === AUTHORS === */
/* Fondo con tinte violeta para diferenciarlo del resto */
.authors {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-mid);
  background-image: linear-gradient(
    180deg,
    rgba(124, 58, 237, 0.06) 0%,
    transparent 60%
  );
}

.authors__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.author-card {
  border: 1px solid var(--border);
  padding: 32px;
  background-color: var(--surface);
  transition: border-color 0.2s, background-color 0.2s;
}

.author-card:hover {
  border-color: var(--violet-dim);
  background-color: var(--violet-glow);
}

.author-card__avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 20px;
}

/* Avatar con iniciales: degradado violeta → cian en lugar de negro plano */
.author-card__initials {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet-dim), var(--cyan-dim));
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  font-size: 22px;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.author-card__name {
  font-size: 18px;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 4px;
}

/* Rol en violeta claro para diferenciarlo del cian de otras secciones */
.author-card__role {
  font-size: 11px;
  font-weight: 400;
  color: var(--violet-light);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.author-card__bio {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.author-card__links { display: flex; gap: 16px; }

.author-card__link {
  font-size: 13px;
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.2s;
}

.author-card__link:hover { opacity: 0.65; }

/* === DOWNLOAD === */
.download-section {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-alt);
  background-image: linear-gradient(
    160deg,
    rgba(0, 212, 255, 0.05) 0%,
    transparent 55%
  );
}

/* === DOWNLOAD GRID === */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

/* Tarjeta base — Windows */
.download-card {
  border: 1px solid var(--border-light);
  border-top: 2px solid var(--cyan);
  padding: 40px;
  background-color: var(--surface);
  box-shadow: 0 -4px 24px rgba(0, 212, 255, 0.07);
}

/* Tarjeta Linux — borde izquierdo en lugar de superior */
.download-card--linux {
  border-top: 1px solid var(--border-light);
  border-left: 2px solid var(--cyan);
  box-shadow: -4px 0 20px rgba(0, 212, 255, 0.07);
}

.download-card__platform {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.download-card__os-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.download-card__os-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--cyan);
  border: 1px solid var(--cyan-dim);
  background-color: rgba(0, 212, 255, 0.05);
  padding: 2px 7px;
  border-radius: 2px;
  letter-spacing: 0.08em;
}

.download-card__filename {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--cyan);
  margin-bottom: 8px;
}

.download-card__meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.9;
  word-break: break-all;
}

.download-card__divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

.download-card__legal {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 16px;
  line-height: 1.6;
}

/* === REQUIREMENTS TABLE === */
.requirements {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-mid);
}

.requirements__heading { margin-bottom: 40px; }

.req-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.req-table thead th {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.req-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  vertical-align: top;
}

.req-table tbody td:first-child {
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  width: 40%;
}

.req-table tbody tr:nth-child(even) {
  background-color: var(--surface-2);
}

/* === FOOTER === */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  background-color: var(--bg);
  background-image: linear-gradient(
    0deg,
    rgba(0, 212, 255, 0.03) 0%,
    transparent 100%
  );
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer__brand {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 400;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.footer__copy {
  font-size: 13px;
  font-weight: 300;
  color: var(--text-muted);
}

.footer__legal {
  width: 100%;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* === ANIMACIONES PARA HACERLO MÁS LLAMATIVO === */
@keyframes glow {
  0%, 100% {
    text-shadow: 0 0 5px var(--cyan);
  }
  50% {
    text-shadow: 0 0 20px var(--cyan), 0 0 30px var(--cyan);
  }
}

h1 {
  animation: glow 3s ease-in-out infinite;
}

/* === RESPONSIVE — 768px === */
@media (max-width: 768px) {
  h1 { font-size: 36px; }
  h2 { font-size: 22px; }

  .nav__links { gap: 20px; }
  .nav__link  { font-size: 13px; }

  .hero { padding: 80px 0 72px; }
  .hero__tagline { font-size: 17px; }
  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .what__metrics {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
  .what__metric { padding: 0; border-left: none; }
  .what__metric + .what__metric {
    border-left: none;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    padding-left: 0;
  }

  .features__grid {
    grid-template-columns: 1fr;
    background-color: transparent;
    gap: 16px;
  }
  .feature-card { border: 1px solid var(--border); }

  .authors__grid { grid-template-columns: 1fr; }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .download-card--linux {
    border-top: 2px solid var(--cyan);
    border-left: 1px solid var(--border-light);
    box-shadow: 0 -4px 20px rgba(0, 212, 255, 0.07);
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}