/* ==========================================================================
   NW AGENCY — Sistema visual
   Dark-first. Señal dual sobre monocromo.
   ========================================================================== */

/* --- TOKENS: tema oscuro (base) --------------------------------------- */
:root {
  --ground:      #0A0B0D;
  --surface:     #101216;
  --surface-2:   #16191F;
  --line:        #22262E;
  --line-soft:   #191C22;

  --ink:         #F2F4F7;
  --ink-2:       #98A1AE;
  --ink-3:       #5B6472;

  --signal:      #FF2D55;
  --signal-2:    #00E5FF;
  --signal-ink:  #0A0B0D;

  --grid-line:   rgba(255,255,255,.045);

  --ff-display: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
  --ff-body:    'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --ff-mono:    'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --step--1: clamp(.78rem, .76rem + .1vw, .84rem);
  --step-0:  clamp(1rem, .97rem + .15vw, 1.08rem);
  --step-1:  clamp(1.2rem, 1.12rem + .4vw, 1.45rem);
  --step-2:  clamp(1.6rem, 1.4rem + .95vw, 2.3rem);
  --step-3:  clamp(2.1rem, 1.7rem + 2vw, 3.6rem);
  --step-4:  clamp(2.9rem, 1.9rem + 4.6vw, 6.4rem);

  --wrap: 1360px;
  --gut: clamp(1.25rem, 4vw, 3rem);
  --sec: clamp(5rem, 9vw, 9.5rem);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* --- TOKENS: tema claro ----------------------------------------------- */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --ground:     #F6F7F9;
    --surface:    #FFFFFF;
    --surface-2:  #EFF1F4;
    --line:       #DCE0E6;
    --line-soft:  #E8EBEF;

    --ink:        #0A0B0D;
    --ink-2:      #545C69;
    --ink-3:      #8B93A0;

    --signal:     #E00B33;
    --signal-2:   #0087A8;
    --signal-ink: #FFFFFF;

    --grid-line:  rgba(10,11,13,.055);
  }
}
:root[data-theme="light"] {
  --ground:     #F6F7F9;
  --surface:    #FFFFFF;
  --surface-2:  #EFF1F4;
  --line:       #DCE0E6;
  --line-soft:  #E8EBEF;

  --ink:        #0A0B0D;
  --ink-2:      #545C69;
  --ink-3:      #8B93A0;

  --signal:     #E00B33;
  --signal-2:   #0087A8;
  --signal-ink: #FFFFFF;

  --grid-line:  rgba(10,11,13,.055);
}

/* --- BASE -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

section[id], main { scroll-margin-top: 5.5rem; }
@media (max-width: 900px) { section[id] { scroll-margin-top: 9.5rem; } }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--ff-display);
  font-weight: 800;
  line-height: .96;
  letter-spacing: -.03em;
  text-wrap: balance;
  margin: 0;
}
p { margin: 0; }
img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--signal-2);
  outline-offset: 3px;
}

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--signal); color: var(--signal-ink);
  padding: .75rem 1.25rem; font-family: var(--ff-mono); font-size: var(--step--1);
}
.skip:focus { left: 0; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

/* --- UTILIDADES TIPOGRÁFICAS ------------------------------------------ */
.mono {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.eyebrow {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0;
}
.lede {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 46ch;
}

/* --- REVEALS (solo con JS activo) ------------------------------------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  transition-delay: var(--d, 0ms);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

.js [data-reveal="rule"] {
  transform: none;
  opacity: 1;
  clip-path: inset(0 100% 0 0);
  transition: clip-path .9s var(--ease);
  transition-delay: var(--d, 0ms);
}
.js [data-reveal="rule"].is-in { clip-path: inset(0 0 0 0); }

@media (prefers-reduced-motion: reduce) {
  .js [data-reveal],
  .js [data-reveal="rule"] {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
    transition: none !important;
  }
}

/* --- BOTONES ----------------------------------------------------------- */
.btn {
  --btn-bg: var(--signal);
  --btn-fg: var(--signal-ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  padding: 1.05rem 1.6rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  border: 1px solid var(--btn-bg);
  cursor: pointer;
  overflow: hidden;
  transition: background .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}
.btn::after {
  content: "";
  width: .5rem; height: .5rem;
  border-top: 1.5px solid currentColor;
  border-right: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:hover::after { transform: rotate(45deg) translate(2px, -2px); }

.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }

.btn-sm { padding: .7rem 1.1rem; }

/* --- HEADER ------------------------------------------------------------ */
.top {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: .95rem var(--gut);
  display: flex;
  align-items: center;
  gap: 2rem;
}
.brand { display: flex; align-items: center; gap: .6rem; flex-shrink: 0; }
.brand-mark {
  width: 1.35rem; height: 1.35rem;
  background: linear-gradient(135deg in oklab, var(--signal) 0%, var(--signal-2) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}
.brand-name {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -.02em;
}
.brand-dot { color: var(--ink-3); font-weight: 400; }

.nav {
  display: flex;
  gap: 1.9rem;
  margin-inline: auto;
}
.nav a {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-block: .25rem;
  position: relative;
  transition: color .2s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.top-progress { height: 1px; background: transparent; }
.top-progress span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--signal), var(--signal-2));
}

@media (max-width: 900px) {
  .top-inner { flex-wrap: wrap; gap: .8rem 1rem; }
  .nav {
    order: 3;
    width: 100%;
    margin: 0;
    gap: 1.35rem;
    overflow-x: auto;
    padding-bottom: .15rem;
    scrollbar-width: none;
    mask-image: linear-gradient(90deg, #000 88%, transparent 100%);
    -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent 100%);
  }
  .nav::-webkit-scrollbar { display: none; }
  .top-inner > .btn { margin-inline-start: auto; }
}
@media (max-width: 560px) {
  .top-inner > .btn { padding: .6rem .85rem; }
  .btn-sm .opt { display: none; }
}

/* --- HERO -------------------------------------------------------------- */
.hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero-sig {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
@media (max-width: 760px) { .hero-sig { opacity: .45; } }
.hero-inner {
  position: relative;
  padding-block: clamp(4.5rem, 11vw, 9rem) clamp(3rem, 6vw, 5rem);
}
.hero h1 {
  font-size: var(--step-4);
  margin: 1.6rem 0 0;
  max-width: 16ch;
}
.hero h1 em {
  font-style: normal;
  position: relative;
  display: inline-block;
  color: var(--signal);
}
.hero h1 em::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -.14em;
  width: 100%;
  height: .07em;
  background: linear-gradient(90deg, var(--signal) 0%, var(--signal-2) 100%);
  transform-origin: left;
}
.js .hero h1 em::after {
  transform: scaleX(0);
  transition: transform 1s var(--ease) .55s;
}
.js .hero h1.is-in em::after { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) {
  .js .hero h1 em::after { transform: none; transition: none; }
}
.hero .lede { margin-top: 1.8rem; }
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  margin-top: 2.6rem;
}

/* Ticker de métricas del hero */
.ticker {
  margin: clamp(3.5rem, 7vw, 5.5rem) 0 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem 1rem;
}
.ticker > div { border-left: 1px solid var(--line); padding-left: 1.1rem; }
.ticker > div:first-child { border-left: 0; padding-left: 0; }
.ticker dt {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ink-3);
  line-height: 1.45;
  max-width: 22ch;
}
.ticker dd {
  margin: 0 0 .3rem;
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: var(--step-2);
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
}
.ticker .unit { color: var(--signal); }

@media (max-width: 720px) {
  .ticker { grid-template-columns: repeat(2, 1fr); }
  .ticker > div:nth-child(3) { border-left: 0; padding-left: 0; }
}

/* --- CABECERA DE SECCIÓN (hoja de especificación) --------------------- */
.section { padding-block: var(--sec); border-bottom: 1px solid var(--line); }
.section-alt { background: var(--surface); }

.spec {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.2rem;
}
.spec-idx {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--signal);
  letter-spacing: .08em;
}
.spec-rule { flex: 1; height: 1px; background: var(--line); }
.spec-label {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.split-head h2 { font-size: var(--step-3); max-width: 14ch; }
.split-head p { margin-top: 1.2rem; color: var(--ink-2); max-width: 38ch; }

@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
}

/* --- DIAGNÓSTICO ------------------------------------------------------- */
.truths { display: grid; gap: 0; }
.truth {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.4rem;
  padding-block: 1.8rem;
  border-top: 1px solid var(--line);
}
.truth:last-child { border-bottom: 1px solid var(--line); }
.truth-idx {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  color: var(--ink-3);
  padding-top: .35rem;
}
.truth-said {
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: var(--step-1);
  letter-spacing: -.02em;
  line-height: 1.2;
}
.truth-real {
  margin-top: .7rem;
  color: var(--ink-2);
  padding-left: 1.1rem;
  border-left: 2px solid var(--signal);
  max-width: 52ch;
}

/* --- EL SISTEMA -------------------------------------------------------- */
.modules { display: grid; gap: 0; }
.module {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 4fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding-block: clamp(2.2rem, 4vw, 3.2rem);
  border-top: 1px solid var(--line);
  position: relative;
  transition: background .35s var(--ease);
}
.modules .module:last-child { border-bottom: 1px solid var(--line); }
.module::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  height: 1px; width: 0;
  background: linear-gradient(90deg, var(--signal), var(--signal-2));
  transition: width .5s var(--ease);
}
.module:hover::before { width: 100%; }
.module:hover { background: var(--surface-2); }

.module-id {
  display: flex;
  align-items: baseline;
  gap: .9rem;
}
.module-num {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  color: var(--signal);
  font-weight: 600;
}
.module-id h3 {
  font-size: var(--step-2);
  letter-spacing: -.035em;
}
.module-body p { color: var(--ink-2); max-width: 44ch; }
.module-body .kicker {
  display: block;
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: .6rem;
}
.module-list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  gap: .5rem;
}
.module-list li {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  color: var(--ink-2);
  display: flex;
  gap: .6rem;
  align-items: baseline;
}
.module-list li::before {
  content: "";
  width: .4rem; height: 1px;
  background: var(--signal-2);
  flex-shrink: 0;
  transform: translateY(-.3em);
}

@media (max-width: 980px) {
  .module { grid-template-columns: 1fr; gap: 1.1rem; }
}

/* --- PROCESO ----------------------------------------------------------- */
.phases { display: grid; gap: 0; counter-reset: phase; }
.phase {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: baseline;
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
}
.phases .phase:last-child { border-bottom: 1px solid var(--line); }
.phase-num {
  font-family: var(--ff-mono);
  font-size: var(--step-1);
  font-weight: 600;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.phase-main h4 {
  font-size: var(--step-1);
  letter-spacing: -.02em;
  font-weight: 700;
}
.phase-main p { margin-top: .5rem; color: var(--ink-2); max-width: 60ch; }
.phase-when {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--signal);
  white-space: nowrap;
}
@media (max-width: 720px) {
  .phase { grid-template-columns: 3rem 1fr; }
  .phase-when { grid-column: 2; }
}

/* --- STACK ------------------------------------------------------------- */
#stack-band { padding-block: clamp(3.5rem, 6vw, 5.5rem); }

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}
.stack span {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .06em;
  padding: .5rem .85rem;
  border: 1px solid var(--line);
  color: var(--ink-2);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.stack span:hover { border-color: var(--signal-2); color: var(--ink); }

/* --- FILTRO (para quién / no) ----------------------------------------- */
.filter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
}
.filter-col { padding: clamp(1.6rem, 3.5vw, 2.6rem); }
.filter-col + .filter-col { border-left: 1px solid var(--line); }
.filter-col h3 {
  font-size: var(--step-1);
  letter-spacing: -.02em;
  display: flex;
  align-items: center;
  gap: .7rem;
}
.filter-col h3 .tag {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: .1em;
  padding: .2rem .5rem;
  border: 1px solid currentColor;
}
.yes .tag { color: var(--signal-2); }
.no  .tag { color: var(--ink-3); }
.filter-col ul {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .95rem;
}
.filter-col li {
  display: grid;
  grid-template-columns: 1.1rem 1fr;
  gap: .8rem;
  color: var(--ink-2);
  font-size: var(--step-0);
  line-height: 1.5;
}
.filter-col li::before {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  line-height: 1.7;
}
.yes li::before { content: "+"; color: var(--signal-2); }
.no  li::before { content: "−"; color: var(--ink-3); }

@media (max-width: 760px) {
  .filter-grid { grid-template-columns: 1fr; }
  .filter-col + .filter-col { border-left: 0; border-top: 1px solid var(--line); }
}

/* --- CTA --------------------------------------------------------------- */
.cta {
  position: relative;
  padding-block: clamp(5rem, 10vw, 8.5rem);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 100% 3.5rem,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 3.5rem 100%;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000 20%, transparent 75%);
  pointer-events: none;
}
.cta-inner { position: relative; }
.cta h2 {
  font-size: var(--step-3);
  max-width: 18ch;
  margin-top: 1.4rem;
}
.cta p { margin-top: 1.4rem; color: var(--ink-2); max-width: 44ch; font-size: var(--step-1); }
.cta-actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2.4rem; }
.cta-note {
  margin-top: 1.6rem;
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  color: var(--ink-3);
  letter-spacing: .05em;
}

/* --- FOOTER ------------------------------------------------------------ */
.foot { padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; }
.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
}
.foot h5 {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 1.1rem;
  font-weight: 500;
}
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .65rem; }
.foot li a, .foot li span {
  color: var(--ink-2);
  font-size: var(--step-0);
  transition: color .2s var(--ease);
}
.foot li a:hover { color: var(--signal); }
.foot-blurb { color: var(--ink-2); max-width: 34ch; margin-top: 1rem; }
.foot-bottom {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  color: var(--ink-3);
  letter-spacing: .05em;
}
@media (max-width: 860px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .foot-grid { grid-template-columns: 1fr; gap: 2rem; }
}