/* ==================================================================== *\
   AG PUBLICISTA — Sistema de diseño
   "Estudio creativo nocturno": elegante en la base, alegre en el acento.

   1. Tokens          5. Botones y chips       9. Blog / prosa
   2. Base            6. Hero                 10. Utilidades
   3. Header / nav    7. Secciones y cards    11. Animaciones
   4. Footer          8. Cinta ondulada       12. Responsive
\* ==================================================================== */

/* 1. Tokens ---------------------------------------------------------- */

:root {
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Instrument Sans", ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --shell: 1160px;
}

[data-theme="dark"] {
  --bg: #0a0a0f;
  --bg-soft: #101018;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-hover: rgba(255, 255, 255, 0.07);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.2);
  --text: #f4f3f8;
  --muted: #a2a1b3;
  --faint: #6e6d80;
  --violeta: #8b7bff;
  --turquesa: #35d6c8;
  --ambar: #ffb454;
  --coral: #ff7a68;
  --accent-ink: #0a0a12;
  --shadow: 0 20px 44px -20px rgba(0, 0, 0, 0.85);
  --header-bg: rgba(10, 10, 15, 0.78);
  --code-bg: rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f6f4ef;
  --bg-soft: #fffdf9;
  --panel: #fffdf9;
  --panel-hover: #ffffff;
  --line: rgba(24, 22, 40, 0.11);
  --line-strong: rgba(24, 22, 40, 0.24);
  --text: #17161f;
  --muted: #5d5c6e;
  --faint: #8c8b9c;
  --violeta: #5b46e8;
  --turquesa: #0d9488;
  --ambar: #d97a06;
  --coral: #e2543f;
  --accent-ink: #ffffff;
  --shadow: 0 18px 38px -22px rgba(30, 25, 60, 0.4);
  --header-bg: rgba(246, 244, 239, 0.82);
  --code-bg: #12121a;
  color-scheme: light;
}

/* 2. Base ------------------------------------------------------------ */

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

.shell {
  width: min(var(--shell), 100% - 3rem);
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 560;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

p { margin: 0 0 1em; }

a { color: inherit; }

img, svg { max-width: 100%; }

::selection { background: color-mix(in oklab, var(--violeta) 40%, transparent); }

.glow {
  position: fixed;
  inset: -30vh -10vw auto;
  height: 92vh;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(40rem 30rem at 18% 14%, color-mix(in oklab, var(--violeta) 26%, transparent), transparent 70%),
    radial-gradient(34rem 26rem at 82% 6%, color-mix(in oklab, var(--turquesa) 18%, transparent), transparent 70%),
    radial-gradient(26rem 22rem at 55% 30%, color-mix(in oklab, var(--ambar) 9%, transparent), transparent 70%);
  filter: blur(22px);
  opacity: 0.5;
}

[data-theme="light"] .glow { opacity: 0.3; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 3. Header / nav ---------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.8rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand__mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  transition: transform 400ms var(--ease);
}

.brand:hover .brand__mark { transform: rotate(-8deg) scale(1.05); }

.brand__name { font-size: 1.06rem; }

.brand__name em {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  color: var(--violeta);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  transition: color 180ms ease, background-color 180ms ease;
}

.site-nav a:hover { color: var(--text); background: var(--panel-hover); }

.site-nav a[aria-current="page"] {
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
}

.site-nav a.nav-yt {
  color: var(--accent-ink);
  background: var(--coral);
  border: 0;
}

.site-nav a.nav-yt:hover { filter: brightness(1.08); }

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.65rem;
  cursor: pointer;
}

.theme-btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  font-size: 1rem;
  transition: transform 300ms var(--ease), background-color 180ms ease;
}

.theme-btn:hover { transform: rotate(20deg); background: var(--panel-hover); }

/* 4. Footer ---------------------------------------------------------- */

.site-footer {
  margin-top: clamp(4rem, 9vw, 7rem);
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-block: 3rem 2.4rem;
}

.site-footer h4 {
  font-size: 1rem;
  margin-bottom: 0.9rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--text); text-decoration: underline; }

.site-footer__tag { color: var(--muted); max-width: 34ch; }

.site-footer__bottom {
  border-top: 1px solid var(--line);
  padding-block: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: space-between;
  color: var(--faint);
  font-size: 0.86rem;
}

/* 5. Botones y chips -------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.72rem 1.3rem;
  border-radius: 999px;
  border: 0;
  font: 600 0.98rem var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: transform 200ms var(--ease), box-shadow 200ms ease, filter 160ms ease;
}

.btn--primary {
  background: linear-gradient(120deg, var(--violeta), color-mix(in oklab, var(--violeta) 60%, var(--turquesa)));
  color: #fff;
  box-shadow: 0 10px 26px -12px color-mix(in oklab, var(--violeta) 70%, transparent);
}

[data-theme="light"] .btn--primary { color: #fff; }

.btn--primary:hover { transform: translateY(-2px); filter: brightness(1.06); }

.btn--ghost {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  color: var(--text);
}

.btn--ghost:hover { transform: translateY(-2px); background: var(--panel-hover); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font: 700 0.78rem/1 var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--turquesa);
  margin: 0 0 1rem;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
}

/* 6. Hero ------------------------------------------------------------- */

.hero {
  padding-block: clamp(3.6rem, 8vw, 6.5rem) clamp(2.2rem, 5vw, 4rem);
  position: relative;
}

.hero h1 {
  font-size: clamp(2.6rem, 6.4vw, 4.6rem);
  max-width: 15ch;
  margin-bottom: 0.4em;
}

.hero h1 .fancy {
  font-style: italic;
  font-weight: 480;
  background: linear-gradient(100deg, var(--violeta), var(--turquesa) 55%, var(--ambar));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lede {
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--muted);
  max-width: 56ch;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

/* 7. Secciones y cards ------------------------------------------------ */

.section { padding-block: clamp(2.6rem, 6vw, 4.6rem); }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.section-head h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin: 0; }

.section-head p { margin: 0.4rem 0 0; color: var(--muted); max-width: 52ch; }

.section-head .more {
  flex: 0 0 auto;
  font-weight: 700;
  font-size: 0.94rem;
  color: var(--violeta);
  text-decoration: none;
  white-space: nowrap;
}

.section-head .more:hover { text-decoration: underline; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.2rem;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--panel);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 320ms var(--ease), border-color 200ms ease, background-color 200ms ease, box-shadow 320ms ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  background: var(--panel-hover);
  box-shadow: var(--shadow);
}

.card h3 { font-size: 1.28rem; margin: 0.6rem 0 0.2rem; }

.card p { color: var(--muted); font-size: 0.96rem; margin: 0; }

.card__art {
  height: 130px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(16rem 8rem at 30% 0%, color-mix(in oklab, var(--violeta) 16%, transparent), transparent 70%),
    radial-gradient(12rem 8rem at 90% 100%, color-mix(in oklab, var(--turquesa) 12%, transparent), transparent 65%),
    var(--bg-soft);
}

.card__tag {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  font: 700 0.7rem/1 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--ambar);
  padding: 0.32rem 0.6rem;
  border-radius: 999px;
}

.card__meta {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  color: var(--faint);
  font-size: 0.82rem;
  margin-top: auto;
  padding-top: 0.9rem;
}

/* 8. Cinta ondulada (marquee sobre path SVG) -------------------------- */

.wave-band {
  position: relative;
  height: clamp(110px, 16vw, 170px);
  overflow: hidden;
  pointer-events: none;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.wave-band svg { display: block; width: 100%; height: 100%; }

.wave-band text {
  font: 700 30px var(--font-display);
  letter-spacing: 0.18em;
  fill: color-mix(in oklab, var(--text) 55%, transparent);
  user-select: none;
}

/* 9. Blog / prosa ----------------------------------------------------- */

.prose {
  max-width: 720px;
  margin-inline: auto;
}

.prose h1 { font-size: clamp(2rem, 4.6vw, 3rem); }

.prose h2 {
  font-size: 1.55rem;
  margin-top: 2.2em;
  padding-top: 1.2em;
  border-top: 1px solid var(--line);
}

.prose h3 { font-size: 1.2rem; margin-top: 1.8em; }

.prose p, .prose li { color: color-mix(in oklab, var(--text) 88%, var(--muted)); }

.prose ul, .prose ol { padding-left: 1.3rem; }

.prose li { margin-bottom: 0.45em; }

.prose a { color: var(--violeta); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }

.prose blockquote {
  margin: 1.6em 0;
  padding: 0.9em 1.3em;
  border-left: 3px solid var(--ambar);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--panel);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.08em;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.12em 0.4em;
}

.prose pre {
  background: var(--code-bg);
  color: #e9e6ff;
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
  font: 0.86rem/1.65 var(--font-mono);
}

.prose pre code { background: none; border: 0; padding: 0; color: inherit; }

.prose img, .prose .video-embed {
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  color: var(--faint);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.video-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  margin: 1.8em 0;
  background: #000;
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Bloque reservado para publicidad (AdSense) */
.ad-slot {
  min-height: 90px;
  margin: 2.2em auto;
  display: grid;
  place-items: center;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--faint);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 10. Utilidades ------------------------------------------------------ */

.page-head {
  padding-block: clamp(3rem, 6vw, 4.6rem) 0.6rem;
}

.page-head h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); max-width: 18ch; }

.page-head .lede { color: var(--muted); font-size: 1.1rem; max-width: 58ch; }

.breadcrumbs {
  font-size: 0.86rem;
  color: var(--faint);
  margin-bottom: 1.2rem;
}

.breadcrumbs a { color: var(--faint); text-decoration: none; }
.breadcrumbs a:hover { color: var(--text); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 20px);
  background: var(--text);
  color: var(--bg);
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 240ms ease, transform 240ms var(--ease);
  z-index: 90;
}

.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

/* 11. Animaciones ----------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms ease, transform 700ms var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .wave-band svg animate, .wave-band svg animateTransform { display: none; }
}

/* 12. Responsive ------------------------------------------------------ */

@media (max-width: 880px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }

  .section-head { flex-direction: column; align-items: flex-start; gap: 0.6rem; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    inset: 61px 0 auto;
    z-index: 39;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.4rem;
    background: var(--header-bg);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    display: none;
  }

  .site-nav.is-open { display: flex; }

  .site-nav a { padding: 0.8rem 1rem; font-size: 1.05rem; }

  .site-footer__grid { grid-template-columns: 1fr; gap: 1.8rem; }
}