/* =========================================================
   Blank! — Landing
   Identidad: terminal + pixel + developer tool (NEWSTYLE.md).
   Tema claro por defecto, tema oscuro vía [data-theme="dark"].
   Paneles de terminal/editor siempre oscuros.
   ========================================================= */

:root {
  /* brand tokens */
  --blank-carbon:   #1E1822;
  --blank-lead:     #2D2633;
  --blank-graphite: #403846;
  --blank-gray-700: #5D5862;
  --blank-gray-500: #736E7A;
  --blank-gray-300: #B9B6BC;
  --blank-gray-200: #D7D5D9;
  --blank-gray-100: #E6E6E6;
  --blank-white:    #FFFFFF;

  --blank-pink:        #FF2D7A;
  --blank-pink-hover:  #E92369;
  --blank-pink-active: #CE1A59;
  --blank-pink-soft:   #FFE2ED;
  --blank-pink-border: #FF8DB7;

  --success: #45C982;
  --warning: #F2B84B;
  --error:   #EF5366;
  --info:    #58A6FF;

  /* theme (light) */
  --bg:        #F5F4F5;
  --surface:   #FFFFFF;
  --surface-2: #F5F4F5;
  --text:      #1E1822;
  --text-2:    #736E7A;
  --border:    #D7D5D9;
  --grid-line: rgba(30, 24, 34, 0.05);

  /* type */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --font-ui:   Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* geometry */
  --radius-sm: 2px;
  --radius:    4px;
  --radius-lg: 6px;
  --shadow-card: 0 4px 16px rgba(30, 24, 34, 0.08);
  --maxw: 1160px;

  /* motion */
  --t-fast: 120ms;
  --t-std:  200ms;
}

[data-theme="dark"] {
  --bg:        #17131A;
  --surface:   #1E1822;
  --surface-2: #17131A;
  --text:      #FFFFFF;
  --text-2:    #B9B6BC;
  --border:    #403846;
  --grid-line: rgba(255, 255, 255, 0.04);
  --shadow-card: none;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
}
::selection { background: var(--blank-pink); color: #fff; }

:focus-visible {
  outline: 2px solid var(--blank-pink);
  outline-offset: 2px;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}
.container-narrow { max-width: 800px; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  height: 40px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--t-fast) linear, border-color var(--t-fast) linear, color var(--t-fast) linear;
  user-select: none;
}
.btn-sm { height: 32px; padding: 0 12px; font-size: 12px; }
.btn-lg { height: 48px; padding: 0 28px; font-size: 14px; }

.btn-primary {
  background: var(--blank-pink);
  color: #fff;
  border-color: var(--blank-pink);
}
.btn-primary:hover  { background: var(--blank-pink-hover); border-color: var(--blank-pink-hover); }
.btn-primary:active { background: var(--blank-pink-active); border-color: var(--blank-pink-active); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--blank-graphite);
}
[data-theme="dark"] .btn-outline { border-color: var(--blank-gray-500); }
.btn-outline:hover { border-color: var(--blank-pink); color: var(--blank-pink); }

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}
.btn-outline-light:hover { border-color: var(--blank-pink-border); color: var(--blank-pink-border); }

.icon-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--blank-gray-300);
  background: transparent;
  border: 1px solid var(--blank-graphite);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--t-fast) linear, border-color var(--t-fast) linear;
}
.icon-btn:hover { color: #fff; border-color: var(--blank-gray-500); }

/* =========================================================
   CHIPS / BADGES
   ========================================================= */
.chip {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  white-space: nowrap;
}
.chip-pink {
  color: var(--blank-pink);
  border-color: var(--blank-pink-border);
  background: var(--blank-pink-soft);
}
[data-theme="dark"] .chip-pink { background: #4A2033; }
.chip-row { display: flex; gap: 8px; margin-bottom: 24px; }

/* =========================================================
   NAVBAR (siempre carbón)
   ========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 32px;
  height: 56px;
  padding: 0 32px;
  background: var(--blank-carbon);
  border-bottom: 1px solid var(--blank-graphite);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}
/* Pixel-art wordmark (assets/logo_white.png / logo_dark.png, 32x11):
   nearest-neighbour scaling at an integer multiple (2x), swapped per theme. */
.brand-logo { image-rendering: pixelated; display: block; }
.brand-logo.on-light { display: none; }
[data-theme="light"] .brand-logo.on-dark { display: none; }
[data-theme="light"] .brand-logo.on-light { display: block; }

.nav-links { display: flex; gap: 24px; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--blank-gray-300);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--t-fast) linear, border-color var(--t-fast) linear;
}
.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  border-bottom-color: var(--blank-pink);
}
.nav-ext { opacity: 0.85; }

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-burger { display: none; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 16px 16px;
  -webkit-mask-image: radial-gradient(ellipse 90% 90% at 50% 0%, #000 40%, transparent 100%);
          mask-image: radial-gradient(ellipse 90% 90% at 50% 0%, #000 40%, transparent 100%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px 32px 64px;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  align-items: center;
}
.hero-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 4.2vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}
.caret {
  display: inline-block;
  width: 0.5em;
  height: 0.95em;
  margin-left: 6px;
  vertical-align: text-bottom;
  background: var(--blank-pink);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-sub {
  font-size: 16px;
  color: var(--text-2);
  max-width: 480px;
  margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions-center { justify-content: center; }
.hero-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text-2);
}

/* ---------- intro del logo (canvas, se reproduce una vez) ---------- */
.hero-right { min-width: 0; position: relative; }
.intro-stage {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.intro-canvas {
  width: min(100%, 640px);
  height: auto;
  aspect-ratio: 16 / 9;
}

/* pixel cluster decoration */
.px-cluster {
  position: absolute;
  right: -8px;
  bottom: -16px;
  display: flex;
  gap: 4px;
}
.px-cluster span {
  width: 8px; height: 8px;
  background: var(--blank-gray-300);
  opacity: 0.6;
}
.px-cluster span:nth-child(2) { transform: translateY(-6px); }
.px-cluster span:nth-child(4) { transform: translateY(-10px); }
.px-cluster .px-pink { background: var(--blank-pink); opacity: 1; }

/* =========================================================
   SECTIONS
   ========================================================= */
.section { padding: 80px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
[data-theme="dark"] .section-alt { background: var(--surface); }

.section-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.section-title {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
  white-space: nowrap;
}
.sec-n { color: var(--blank-pink); }
.section-rule {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* =========================================================
   FEATURES
   ========================================================= */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--t-std) linear;
}
.feat:hover { border-color: var(--blank-pink-border); }
.feat-ico {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--blank-pink);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}
.feat h3 {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 8px;
}
.feat p { margin: 0; font-size: 14px; color: var(--text-2); }

/* =========================================================
   WORKFLOW
   ========================================================= */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.step {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
[data-theme="dark"] .step { background: var(--surface-2); }
.step-n {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--blank-pink);
  display: block;
  margin-bottom: 12px;
}
.step h3 {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 8px;
}
.step-cmd {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blank-gray-300);
  background: var(--blank-carbon);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  margin: 0 0 12px;
  overflow-x: auto;
  white-space: nowrap;
}
.step p { margin: 0; font-size: 13px; color: var(--text-2); }

/* =========================================================
   DOWNLOAD (banda oscura)
   ========================================================= */
.section-dark {
  background: var(--blank-carbon);
  color: #fff;
  border-top: 1px solid var(--blank-graphite);
  border-bottom: 1px solid var(--blank-graphite);
}
.dl-box {
  position: relative;
  text-align: center;
  padding: 24px 16px;
}
/* broken corner brackets */
.dl-box::before,
.dl-box::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  border: 1px solid var(--blank-graphite);
}
.dl-box::before { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.dl-box::after  { bottom: 0; right: 0; border-left: 0; border-top: 0; }

.dl-path {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--blank-gray-500);
  margin: 0 0 16px;
}
.dl-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 40px);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.dl-sub {
  color: var(--blank-gray-300);
  margin: 0 0 32px;
}
.req {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 40px 0 0;
  padding: 0;
}
.req li {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blank-gray-300);
  border: 1px solid var(--blank-graphite);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}
.req-k {
  color: var(--blank-gray-500);
  font-size: 10px;
  letter-spacing: 0.08em;
  margin-right: 8px;
}

/* =========================================================
   FAQ
   ========================================================= */
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 8px;
}
.faq-item summary {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "+";
  font-weight: 700;
  color: var(--blank-pink);
  width: 16px;
  flex-shrink: 0;
}
.faq-item[open] summary::before { content: "−"; }
.faq-item p {
  margin: 0;
  padding: 0 20px 16px 48px;
  font-size: 14px;
  color: var(--text-2);
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  background: var(--blank-carbon);
  border-top: 1px solid var(--blank-graphite);
  color: #fff;
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 32px;
  padding-bottom: 32px;
}
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blank-gray-300);
  transition: color var(--t-fast) linear;
}
.footer-nav a:hover { color: #fff; }
.footer-copy {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--blank-gray-500);
}

/* =========================================================
   MOTION
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .caret { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; padding-top: 56px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .feat-grid { grid-template-columns: 1fr 1fr; }
  .container { padding: 0 24px; }
  .nav { padding: 0 24px; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--blank-carbon);
    border-bottom: 1px solid var(--blank-graphite);
    padding: 8px 24px 16px;
  }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--blank-graphite); }
  .nav.nav-open .nav-links { display: flex; }
  .nav-burger { display: inline-flex; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .nav { padding: 0 16px; }
  .section { padding: 48px 0; }
  .feat-grid, .steps { grid-template-columns: 1fr; }
  .nav-cta { display: none; }
  .footer-copy { margin: 0; width: 100%; }
  .hero-inner { padding: 40px 16px 48px; }
  .btn-lg { width: 100%; }
}