/* ===========================================================
   Portfolio — estilos base
   Paleta neutra + un acento. Tipografía Archivo. Diseño limpio.
=========================================================== */

:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --ink: #17171a;
  --ink-soft: #55565c;
  --ink-faint: #8a8b91;
  --line: #e6e5e1;
  --accent: #8f4419;
  --accent-soft: #f6e4d8;
  --accent-on-dark: #b3612f;
  --tag-bg: #f1f0eb;
  --radius: 14px;
  --max: 840px;
  --shadow-sm: 0 1px 2px rgba(23,23,26,0.05), 0 1px 3px rgba(23,23,26,0.08);
  --shadow-md: 0 2px 4px rgba(23,23,26,0.05), 0 8px 16px -4px rgba(23,23,26,0.10);
  --shadow-lg: 0 12px 20px -6px rgba(23,23,26,0.14), 0 4px 8px -2px rgba(23,23,26,0.06);
}


* { box-sizing: border-box; }

/* .full-bleed sections use width:100vw to break out of .wrap; 100vw
   includes the scrollbar's own width on browsers that reserve space for it
   (most non-macOS/overlay setups), so the full-bleed edge sits a few pixels
   past the real viewport and creates a horizontal scrollbar of its own.
   overflow-x:hidden has to sit on html, not just body: body's clip alone
   doesn't stop the root/documentElement from measuring (and scrolling to)
   that overflow. */
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .logo {
  font-family: "Bitter", Georgia, "Times New Roman", serif;
  font-weight: 700;
  letter-spacing: -0.01em;
}

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

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

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

/* -------------------- Header -------------------- */

/* Nav: contenedor más ancho que el texto del sitio (--max: 840px), en
   todas las páginas. */
.site-header .wrap {
  max-width: 960px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(230, 232, 216, 0.96);
  backdrop-filter: blur(12px);
  z-index: -1;
}

/* backdrop-filter promotes .site-header to its own compositing layer, which
   can paint above a position:fixed overlay despite a much lower z-index.
   Dropping the filter while the lightbox is open removes that layer
   promotion, so normal z-index stacking (lightbox 999 > header 50) applies. */
body.lightbox-open .site-header::before { backdrop-filter: none; }

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.logo span { color: var(--accent); }

nav.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

nav.main-nav a {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  color: var(--ink);
  border-color: var(--accent);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  padding: 10px;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 8px 0;
  font-weight: 600;
  font-size: 16px;
  z-index: 1000;
}

.skip-link:focus {
  left: 0;
}

/* -------------------- Footer -------------------- */

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, .12);
  margin-top: 120px;
  padding: 48px 0;
}

.site-footer .wrap {
  max-width: 960px;
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.footer-lead {
  font-family: 'Bitter', Georgia, 'Times New Roman', serif;
  font-weight: 700;
  font-size: 40px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: #fff;
  max-width: 680px;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links { display: flex; gap: 24px; }

.footer-links a { color: var(--ink-soft); font-size: 16px; font-weight: 600; padding: 6px 0; }
.footer-links a:hover { color: var(--accent); }

.copyright { color: var(--ink-faint); font-size: 12px; font-weight: 600; align-self: flex-end; }

.footer-contact { display: flex; gap: 48px; flex-wrap: wrap; }

.footer-contact-block { display: flex; flex-direction: column; gap: 4px; transition: opacity .15s ease; }

.footer-contact-block:hover { opacity: .75; }

.footer-contact-label {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.footer-contact-detail { font-size: 14px; color: #fff; }

@media (max-width: 640px) {
  .footer-contact { flex-direction: column; gap: 20px; }
  .footer-lead { font-size: 32px; }
}

/* -------------------- Sections / typography -------------------- */

section { padding: 96px 0; }

#inicio, #portfolio, #sobre-mi, #contacto { scroll-margin-top: 92px; }

#portfolio, #sobre-mi { border-top: 1px solid var(--line); }

.eyebrow {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(40px, 5.2vw, 60px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
}

h3 {
  font-size: 24px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}

p { color: var(--ink-soft); margin: 0 0 16px; }

.lede {
  font-size: 20px;
  color: var(--ink-soft);
  max-width: 640px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 16px;
  transition: transform .18s cubic-bezier(.22,1,.36,1), background .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.btn:active { transform: scale(.96); }

.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: scale(.96); box-shadow: none; }

.btn-ghost { border: 1px solid var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-ghost:active { transform: scale(.96); }

/* -------------------- Hero -------------------- */

.hero { padding-top: 72px; padding-bottom: 72px; background: #e6e8d8; }

/* Igual que el nav: el hero es más ancho que el texto que contiene (que
   se queda en su max-width propio, ≤840px, y alineado a la izquierda —
   sin margin:auto ni centrado de ningún tipo). */
.hero .wrap { max-width: 960px; }

.hero-photo {
  aspect-ratio: 4/5;
  border-radius: var(--radius);
  background: linear-gradient(155deg, var(--accent-soft), #f6dfe6 60%, #ffe9d6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-weight: 700;
  overflow: hidden;
  position: relative;
}

.hero-photo img { width: 100%; height: 100%; object-fit: cover; }

/* -------------------- Project rows -------------------- */
/* Full-width, stacked project rows: media on one side, copy on the other,
   alternating per row. No per-project background color — the row lives
   directly on the page surface; only the media panel gets a neutral frame. */

.project-grid {
  display: flex;
  flex-direction: column;
  gap: 72px;
}

/* La sección Portfolio del home (título + filas de proyecto) usa un
   contenedor más ancho que el resto del texto de la página (que se
   queda en --max: 840px). */
#portfolio .wrap {
  max-width: 960px;
}

.project-row {
  display: flex;
  align-items: center;
  gap: 56px;
}

@media (min-width: 861px) {
  .project-row:nth-of-type(even) .project-row-copy { order: 2; }
  .project-row:nth-of-type(even) .project-row-media { order: 1; }
}

.project-row-copy { flex: 1 1 0; }

.project-row-copy h3,
.project-row-copy .desc {
  max-width: 320px;
}

.project-row-media {
  flex: 1 1 0;
  border-radius: var(--radius);
  background: var(--tag-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-row-media img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform .4s cubic-bezier(.22,1,.36,1);
}

.project-row:hover .project-row-media img { transform: scale(1.02); }

.project-type {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px 14px;
  margin-bottom: 16px;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.project-row h3 { margin-bottom: 12px; }

.project-row p.desc { color: var(--ink-soft); margin-bottom: 20px; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
  transition: gap .2s ease, color .2s ease;
}

.project-row:hover .card-link { gap: 9px; color: var(--accent); }

.card-link svg { width: 14px; height: 14px; transition: transform .2s ease; }

.project-row:hover .card-link svg { transform: translateX(2px); }

.tag {
  background: var(--tag-bg);
  color: var(--ink-soft);
  font-size: 16px;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
}

.tag.accent { background: var(--accent-soft); color: var(--accent); }

/* -------------------- About page -------------------- */

.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: center;
}

/* La sección Sobre mí del home también usa el contenedor ancho. */
#sobre-mi .wrap {
  max-width: 960px;
}

/* -------------------- Contact -------------------- */

.contact-email {
  display: inline-block;
  margin-top: 32px;
  font-size: 32px;
  font-weight: 600;
  color: var(--accent-on-dark);
  letter-spacing: -0.01em;
  transition: opacity .15s ease;
  overflow-wrap: anywhere;
}

.contact-email:hover { opacity: .8; }

.site-footer {
  background: #162320;
}

.footer-flush { margin-top: 0; border-top: none; }

.site-footer .copyright { color: rgba(255, 255, 255, .5); }
.site-footer .footer-links a { color: rgba(255, 255, 255, .75); }
.site-footer .footer-links a:hover { color: #fff; }

/* -------------------- Case study -------------------- */

.cs-hero {
  padding-top: 64px;
  padding-bottom: 56px;
  background: #e6e8d8;
}

/* Mismo criterio que .hero: contenedor a 960px, texto interno a su
   propio max-width (≤840px) alineado a la izquierda. */
.cs-hero .wrap { max-width: 960px; }

.cs-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.cs-meta-item .k { font-size: 16px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-soft); font-weight: 600; margin-bottom: 6px; }
.cs-meta-item .v { font-size: 16px; font-weight: 600; }

.cs-section { padding: 72px 0; border-bottom: 1px solid var(--line); }
.cs-section:last-of-type { border-bottom: none; }

.cs-section .eyebrow { margin-bottom: 10px; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.callout {
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 24px;
  margin: 20px 0;
  min-width: 0;
}

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

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 12px;
}

.process-step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  min-width: 0;
  overflow-wrap: break-word;
}

.process-step .num {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
}

/* --- evidence captions: usada para reutilizar la tipografía de etiqueta
   sobre capturas o bloques sin caja (p. ej. "Cliente"/"Restaurante" en
   Gamba). El contenedor con caja (.mock-frame) se retiró en la unificación
   de imágenes; toda evidencia usa ahora el estilo "limpio" sin caja. --- */

.mock-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.placeholder-note {
  font-size: 12px;
  color: var(--ink-soft);
  font-style: italic;
  margin-top: 10px;
}

/* --- full-bleed evidence images: rompen el .wrap y ocupan todo el ancho de la página.
   Es hermano de .wrap dentro de <section> (nunca hijo), y ni <section> ni <body>
   llevan padding horizontal, así que width:100% ya llega borde a borde sin más.
   Antes usaba width:100vw + márgenes negativos: 100vw incluye el ancho de la
   barra de scroll en navegadores que la reservan, así que sobraba unos px y
   creaba scroll horizontal — y "arreglarlo" con overflow-x:hidden en html/body
   rompía el position:sticky de .site-header. width:100% no tiene ese problema. --- */

.full-bleed {
  display: block;
  width: 100%;
  margin-top: 72px;
  background: #f3f5f5;
}

.full-bleed img {
  display: block;
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
}

/* --- galería de ilustraciones: cuadrícula con lightbox --- */
.illus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
  padding: 0;
}

.illus-item {
  display: block;
  aspect-ratio: 1 / 1;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  cursor: zoom-in;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.illus-item:hover,
.illus-item:focus-visible {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 16px 28px rgba(23, 23, 26, 0.12);
  border-color: var(--accent);
}

.illus-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

@media (max-width: 860px) {
  .illus-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .illus-item { padding: 16px; }
}

/* --- disparador de zoom genérico: envuelve capturas de evidencia (mock-frame,
   full-bleed) sin alterar su estilo propio, solo añade el cursor y el foco --- */
.zoomable {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  border: none;
  background: none;
  cursor: zoom-in;
}

.zoomable:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  background: rgba(23, 23, 26, 0.88);
}

.lightbox[hidden] { display: none; }

.lightbox img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease;
}

.lightbox-close:hover,
.lightbox-close:focus-visible { background: rgba(255, 255, 255, 0.24); }

body.lightbox-open { overflow: hidden; }

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.principle-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  min-width: 0;
}

.cs-nav-next {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 40px 0;
}

/* before / after comparison */
.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 28px 0;
  align-items: start;
}

.compare-item { min-width: 0; }

.compare-item .tag-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.compare-item.before .tag-label { background: var(--tag-bg); color: var(--ink-soft); }
.compare-item.after .tag-label { background: var(--accent-soft); color: var(--accent); }

.compare-item img {
  border-radius: 8px;
  border: 1px solid var(--line);
  width: 100%;
}

.compare-item.before img { filter: saturate(.55) contrast(.96); opacity: .92; }

.compare-caption {
  font-size: 16px;
  color: var(--ink-soft);
  margin-top: 10px;
}

/* -------------------- Interactivity -------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1);
  will-change: opacity, transform;
}

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

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(.9);
  transition: opacity .25s ease, transform .25s cubic-bezier(.22,1,.36,1), visibility .25s, border-color .2s ease, color .2s ease;
  z-index: 150;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-to-top:hover { border-color: var(--accent); color: var(--accent); }
.back-to-top:active { transform: scale(.9); }

@media (prefers-reduced-motion: reduce) {
  .reveal, .btn, .project-row, .project-row-media img, .back-to-top, html { transition: none !important; scroll-behavior: auto !important; }
}

/* -------------------- SEWDEF live component demo -------------------- */
/* Tokens reales del design system de SEWDEF (uso autorizado por INLOC Robotics) */

.sdf-demo {
  --sdf-brand-300: #54b9af;
  --sdf-brand-500: #009688;
  --sdf-brand-600: #00897c;
  --sdf-brand-700: #006b61;
  --sdf-brand-800: #00534b;
  --sdf-brand-50: #e6f5f3;
  --sdf-neutral-300: #c3cdcc;
  --sdf-neutral-400: #b8c3c2;
  --sdf-neutral-500: #667978;
  --sdf-neutral-800: #5b6362;
  --sdf-neutral-900: #464c4b;
  --sdf-error-500: #f04438;
  --sdf-error-300: #f5827a;
  --sdf-error-600: #d93a2f;
  --sdf-error-50: #feeceb;
  --sdf-success-500: #0d844c;
  --sdf-success-300: #60cf9b;
  --sdf-warning-500: #ae6506;
  --sdf-radius-md: 8px;
  --sdf-radius-full: 9999px;
  --sdf-shadow-sm: 0px 1px 2px 0px rgba(16,24,40,.06), 0px 1px 3px 0px rgba(16,24,40,.1);
  --sdf-shadow-md: 0px 2px 4px -2px rgba(16,24,40,.06), 0px 4px 8px -2px rgba(16,24,40,.1);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 28px;
  margin-top: 24px;
  font-family: "Archivo", sans-serif;
}

.sdf-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  align-items: center;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.sdf-row-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-soft);
}

.sdf-row-content {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Buttons */
.sdf-btn {
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--sdf-radius-md);
  border: none;
  cursor: pointer;
  transition: background .15s ease, box-shadow .15s ease, transform .15s cubic-bezier(.22,1,.36,1), color .15s ease, border-color .15s ease;
}
.sdf-btn:active { transform: scale(.96); }

.sdf-btn-primary { background: #008276; color: #fff; box-shadow: var(--sdf-shadow-sm); }
.sdf-btn-primary:hover:not(:disabled) { background: #008477; box-shadow: var(--sdf-shadow-md); }

.sdf-btn-secondary { background: #fff; color: var(--sdf-brand-700); border: 1px solid var(--sdf-brand-500); }
.sdf-btn-secondary:hover:not(:disabled) { background: var(--sdf-brand-50); }

.sdf-btn-tertiary { background: transparent; color: var(--sdf-neutral-800); }
.sdf-btn-tertiary:hover:not(:disabled) { background: var(--sdf-neutral-300); color: #505756; }

.sdf-btn:disabled { background: var(--sdf-neutral-300); color: var(--sdf-neutral-500); cursor: not-allowed; border-color: transparent; box-shadow: none; transform: none; }

.sdf-link {
  background: none;
  border: none;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--sdf-brand-700);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 4px;
  transition: color .15s ease;
}
.sdf-link:hover:not(:disabled) { color: var(--sdf-brand-800); }
.sdf-link:disabled { color: var(--sdf-neutral-500); cursor: not-allowed; text-decoration: none; }

.sdf-toggle-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--ink-soft);
  cursor: pointer;
  margin-left: auto;
}

/* Input */
.sdf-input-demo { align-items: flex-start; justify-content: space-between; }
.sdf-field { max-width: 340px; width: 100%; }
.sdf-field label { display: block; font-size: 12px; font-weight: 600; color: var(--sdf-neutral-900); margin-bottom: 6px; }
.sdf-field input {
  width: 100%;
  font-family: inherit;
  font-size: 16px;
  padding: 10px 14px;
  border-radius: var(--sdf-radius-md);
  border: 1px solid var(--sdf-neutral-300);
  color: var(--sdf-neutral-900);
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.sdf-field input:focus { outline: none; border-color: var(--sdf-brand-500); box-shadow: 0 0 0 3px var(--sdf-brand-50); }
.sdf-hint { font-size: 12px; color: var(--sdf-neutral-500); margin: 6px 0 0; }

.sdf-field.error input { border-color: var(--sdf-error-500); }
.sdf-field.error input:focus { box-shadow: 0 0 0 3px var(--sdf-error-50); }
.sdf-field.error .sdf-hint { color: var(--sdf-error-600); }

.sdf-field.readonly input { background: var(--bg); color: var(--sdf-neutral-500); cursor: not-allowed; }

.sdf-input-actions { display: flex; flex-direction: column; gap: 8px; }
.sdf-mini-btn {
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--sdf-neutral-300);
  background: #fff;
  color: var(--sdf-neutral-800);
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease;
  white-space: nowrap;
}
.sdf-mini-btn:hover { border-color: var(--sdf-brand-500); color: var(--sdf-brand-700); }
.sdf-mini-btn.is-on { border-color: var(--sdf-brand-500); background: var(--sdf-brand-50); color: var(--sdf-brand-700); }

/* Switch */
.sdf-switch-wrap { display: inline-flex; align-items: center; gap: 10px; font-size: 16px; color: var(--sdf-neutral-900); cursor: pointer; }
.sdf-switch {
  width: 40px; height: 22px;
  background: var(--sdf-neutral-400);
  border-radius: var(--sdf-radius-full);
  position: relative;
  display: inline-block;
  transition: background .18s ease;
  cursor: pointer;
}
.sdf-switch-knob {
  position: absolute;
  top: 2px; left: 2px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  box-shadow: var(--sdf-shadow-sm);
  transition: transform .18s cubic-bezier(.22,1,.36,1);
}
.sdf-switch.is-on { background: var(--sdf-brand-500); }
.sdf-switch.is-on .sdf-switch-knob { transform: translateX(18px); }

/* Checkbox */
.sdf-check-wrap { display: inline-flex; align-items: center; gap: 10px; font-size: 16px; color: var(--sdf-neutral-900); cursor: pointer; }
.sdf-checkbox {
  width: 20px; height: 20px;
  border-radius: 8px;
  border: 1.5px solid var(--sdf-neutral-400);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.sdf-checkbox.is-on { background: var(--sdf-brand-500); border-color: var(--sdf-brand-500); }
.sdf-checkbox.is-on::after {
  content: "";
  width: 5px; height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px,-1px);
}

/* Condition tags */
.sdf-condition {
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--sdf-radius-full);
  color: #fff;
}
.sdf-condition.c1 { background: var(--sdf-success-500); }
.sdf-condition.c2 { background: var(--sdf-success-300); color: var(--sdf-neutral-900); }
.sdf-condition.c3 { background: var(--sdf-warning-500); }
.sdf-condition.c4 { background: var(--sdf-error-300); color: #363b3a; }
.sdf-condition.c5 { background: var(--sdf-error-600); }

@media (max-width: 640px) {
  .sdf-row { grid-template-columns: 1fr; gap: 8px; }
}

/* Utility: force a 3-column grid on .cs-meta-grid/.process-steps instances
   that hold exactly 3 items on desktop (login-flow meta, landing hero meta).
   Placed after their base 4-column rule so it wins on desktop, and before
   the mobile media query below so that still wins on narrow viewports. */
.cols-3 { grid-template-columns: repeat(3, 1fr); }

/* -------------------- Responsive -------------------- */

@media (max-width: 860px) {
  nav.main-nav { position: fixed; inset: 76px 0 0 0; background: #e6e8d8; flex-direction: column; padding: 32px; gap: 22px; display: none; z-index: 120; }
  nav.main-nav.open { display: flex; }
  .menu-toggle { display: block; }
  .about-grid, .two-col, .compare-row { grid-template-columns: 1fr; }
  .hero-photo { order: -1; max-width: 340px; margin: 0 auto; }
  .cs-meta-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .principle-grid { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .contact-email { font-size: 24px; }
  .project-row { flex-direction: column; align-items: stretch; gap: 24px; }
  .project-row-copy, .project-row-media { max-width: none; order: 0; flex: none; width: 100%; }
}

/* -------------------- Password gate -------------------- */

.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;
}

.password-gate {
  position: fixed;
  top: 77px; /* clears .site-header (76px + 1px border), which stays visible above the gate */
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: var(--bg);
}

.password-gate[hidden] { display: none; }

.password-gate-card {
  max-width: 480px;
  width: 100%;
  text-align: center;
}

.password-gate-form {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.password-gate-form input {
  flex: 1 1 auto;
  min-width: 0;
  font-family: inherit;
  font-size: 16px;
  padding: 13px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--surface);
  transition: border-color .15s ease, box-shadow .15s ease;
}

.password-gate-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.password-gate-error {
  color: #ce411d;
  font-size: 14px;
  font-weight: 600;
  margin-top: 16px;
}

@media (max-width: 480px) {
  .password-gate-form { flex-direction: column; }
}