/* ============================================================
   KCA México · Hoja de estilos
   Paleta: azul / gris / blanco (branding corporativo)
   Tipografía: Archivo (display y texto) + IBM Plex Mono (cifras)
   ============================================================ */

:root {
  /* Azules corporativos */
  --navy-950: #081826;
  --navy-900: #0c2236;
  --navy-800: #123049;
  --navy-700: #1a4063;

  /* Acento (un solo azul para todo el sitio) */
  --blue-600: #1a6fbf;
  --blue-500: #2280d6;
  --blue-100: #ddebf8;
  --blue-50:  #eef5fb;

  /* Grises fríos */
  --slate-800: #2b3845;
  --slate-700: #3d4c5c;
  --slate-500: #5f7081;
  --slate-400: #8395a7;
  --slate-300: #c3ced8;
  --slate-200: #dde4eb;
  --slate-100: #edf1f5;

  /* Superficies */
  --bg: #f7f9fb;
  --surface: #fdfdfe;

  --radius: 10px;
  --shadow-soft: 0 8px 28px rgba(12, 34, 54, 0.09);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --font-sans: "Archivo", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --header-h: 72px;
}

/* ---------- Reset básico ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--slate-700);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 {
  font-family: var(--font-sans);
  color: var(--navy-900);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); font-weight: 800; }
h2 { font-size: clamp(1.55rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--blue-600); text-decoration: none; }
a:hover { text-decoration: underline; }

ul { padding: 0; margin: 0; }

.lead {
  font-size: 1.125rem;
  color: var(--slate-500);
  max-width: 62ch;
}

.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 24px;
}

.container.narrow { max-width: 820px; }

.section { padding-block: 96px; }
.alt-bg { background: var(--slate-100); }

.section-head { margin-bottom: 56px; max-width: 700px; }
.section-head .lead { margin-top: 4px; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(8, 24, 38, 0.0);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.site-header.scrolled {
  background: rgba(8, 24, 38, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--blue-600);
  padding: 6px 12px;
  border-radius: var(--radius);
}

.brand-text {
  font-size: 0.72rem;
  line-height: 1.3;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.main-nav { display: flex; align-items: center; gap: 28px; }

.main-nav ul {
  display: flex;
  gap: 26px;
  list-style: none;
}

.main-nav ul a {
  position: relative;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 500;
  font-size: 0.95rem;
  padding-block: 6px;
}
.main-nav ul a:hover { color: #fff; text-decoration: none; }

.main-nav ul a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--blue-500);
  transition: right 0.3s var(--ease);
}
.main-nav ul a:hover::after,
.main-nav ul a.active::after { right: 0; }
.main-nav ul a.active { color: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

/* ============================================================
   BOTONES
   ============================================================ */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  padding: 14px 26px;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.25s var(--ease), color 0.25s var(--ease),
              border-color 0.25s var(--ease), transform 0.15s var(--ease);
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px) scale(0.99); }

.btn-primary {
  background: var(--blue-600);
  color: #fff;
}
.btn-primary:hover { background: var(--blue-500); color: #fff; }

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.btn-ghost:hover { border-color: #fff; color: #fff; }

.btn-outline {
  background: transparent;
  color: var(--blue-600);
  border-color: var(--blue-600);
}
.btn-outline:hover { background: var(--blue-600); color: #fff; }

.btn-lg { padding: 17px 32px; font-size: 1.02rem; }
.btn-block { width: 100%; text-align: center; }
.btn-nav { padding: 11px 20px; font-size: 0.88rem; }

.btn-whatsapp {
  background: #1faa53;
  color: #fff;
  width: 100%;
  text-align: center;
  margin-top: 20px;
}
.btn-whatsapp:hover { background: #23bd5d; color: #fff; }

/* ============================================================
   HERO (home)
   ============================================================ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  will-change: transform;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg,
      rgba(8, 24, 38, 0.88) 0%,
      rgba(8, 24, 38, 0.62) 55%,
      rgba(8, 24, 38, 0.3) 100%),
    linear-gradient(180deg,
      rgba(8, 24, 38, 0.5) 0%,
      transparent 45%,
      rgba(8, 24, 38, 0.55) 100%);
}

.hero-persona {
  position: absolute;
  z-index: 2;
  bottom: 0;
  right: 6%;
  height: 78%;
  width: auto;
  pointer-events: none;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.45));
}

.hero-content {
  position: relative;
  z-index: 3;
  padding-top: calc(var(--header-h) + 80px);
  padding-bottom: 100px;
  max-width: 720px;
}

.hero h1 { color: #fff; max-width: 17ch; }

.hero-sub {
  color: var(--slate-300);
  font-size: 1.15rem;
  max-width: 46ch;
  margin-top: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}

/* ============================================================
   CIFRAS
   ============================================================ */
.stats {
  background: var(--surface);
  border-bottom: 1px solid var(--slate-200);
  padding-block: 52px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat { text-align: left; }

.stat-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  color: var(--navy-900);
  display: block;
  line-height: 1.1;
}

.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.9rem;
  color: var(--slate-500);
}

/* ============================================================
   PROBLEMA
   ============================================================ */
.problem .narrow { margin-bottom: 56px; }

.pains-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--slate-200);
}

.pain {
  padding: 32px 28px 32px 0;
}
.pain + .pain { border-left: 1px solid var(--slate-200); padding-left: 28px; }

.pain h3 { margin-bottom: 10px; }
.pain p { color: var(--slate-500); font-size: 0.97rem; }

/* ============================================================
   SERVICIOS (preview en home)
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 32px;
  color: inherit;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
              border-color 0.3s var(--ease);
}
.service-card:hover {
  text-decoration: none;
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
  border-color: var(--blue-100);
}

.service-card h3 { margin: 0; }
.service-card p { color: var(--slate-500); font-size: 0.97rem; flex: 1; }

.service-card-wide { grid-column: 1 / -1; }

.card-link {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--blue-600);
}
.service-card:hover .card-link { text-decoration: underline; }

/* ============================================================
   PROYECTOS (strip en home)
   ============================================================ */
.projects-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--slate-200);
  margin-bottom: 48px;
}

.projects-list li {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy-900);
  padding: 26px 8px;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.projects-list li span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--slate-400);
}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  background:
    radial-gradient(900px 500px at 15% 110%, rgba(34, 128, 214, 0.2), transparent 60%),
    var(--navy-900);
  padding-block: 100px;
}

.cta-band h2 { color: #fff; }
.cta-band .lead { color: var(--slate-300); margin-bottom: 8px; }
.cta-band .btn { margin-top: 22px; }

/* ============================================================
   PAGE HERO (páginas internas)
   ============================================================ */
.page-hero {
  background: linear-gradient(180deg, var(--navy-950) 0%, var(--navy-900) 100%);
  padding-top: calc(var(--header-h) + 80px);
  padding-bottom: 80px;
}

.page-hero h1 { color: #fff; }
.page-hero .lead { color: var(--slate-300); }

/* ============================================================
   SPLITS (texto + imagen)
   ============================================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split-reverse .split-copy { order: 2; }
.split-reverse .split-media { order: 1; }

.split-copy .btn { margin-top: 12px; }

.service-loc {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--slate-400);
  margin-top: -8px;
  margin-bottom: 18px;
}

.check-list {
  list-style: none;
  margin: 0 0 20px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: var(--slate-700);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 14px;
  height: 8px;
  border-left: 2.5px solid var(--blue-600);
  border-bottom: 2.5px solid var(--blue-600);
  transform: rotate(-45deg);
}

.service-result {
  background: var(--blue-50);
  border-left: 3px solid var(--blue-600);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  font-size: 0.98rem;
  color: var(--slate-700);
}

/* ---------- Banda completa (servicio ingeniería) ---------- */
.service-band {
  background: var(--navy-900);
}

.band-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.service-band h2 { color: #fff; }

.check-list-light li { color: var(--slate-300); }
.check-list-light li::before {
  border-color: var(--blue-500);
}

.service-band .service-result {
  background: rgba(34, 128, 214, 0.12);
  border-left-color: var(--blue-500);
  color: var(--slate-300);
}

/* ============================================================
   DIFERENCIADORES (nosotros)
   ============================================================ */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.diff {
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 28px;
}

.diff-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue-600);
  display: block;
  margin-bottom: 14px;
}

.diff h3 { margin-bottom: 8px; font-size: 1.05rem; }
.diff p { color: var(--slate-500); font-size: 0.94rem; }

/* ============================================================
   PROYECTOS (página)
   ============================================================ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.project-card .ph { border-radius: 0; border-left: 0; border-right: 0; border-top: 0; }

.project-info {
  padding: 18px 22px 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.project-info h2 { font-size: 1.2rem; margin: 0; }
.project-info p {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--slate-400);
  margin: 0;
}

/* ============================================================
   CONTACTO
   ============================================================ */
.contact-section { padding-top: 72px; }

.contact-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 56px;
  align-items: start;
}

.contact-form-wrap {
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group { margin-bottom: 18px; display: flex; flex-direction: column; gap: 7px; }

.form-group label {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--navy-900);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--slate-800);
  background: #fff;
  border: 1.5px solid var(--slate-300);
  border-radius: 8px;
  padding: 12px 14px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue-600);
  box-shadow: 0 0 0 3px var(--blue-100);
}

.form-group textarea { resize: vertical; }

.field-error {
  display: none;
  font-size: 0.85rem;
  color: #b3261e;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea { border-color: #b3261e; }
.form-group.has-error .field-error { display: block; }

.form-note {
  font-size: 0.85rem;
  color: var(--slate-400);
  margin-top: 14px;
  text-align: center;
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}

.form-alert {
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 0.97rem;
}
.form-alert-ok {
  background: #e7f4ec;
  border: 1px solid #bfe3cd;
  color: #1d5c34;
}
.form-alert-error {
  background: #fbeae9;
  border: 1px solid #f0c4c0;
  color: #8c2a23;
}

.contact-info h2 { font-size: 1.3rem; }

.contact-list { list-style: none; margin-top: 22px; }
.contact-list li { margin-bottom: 18px; }

.contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin-bottom: 3px;
}

.contact-list a { color: var(--navy-900); font-weight: 500; }
.contact-list a:hover { color: var(--blue-600); }

.map-wrap {
  margin-top: 28px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--slate-200);
}

/* ============================================================
   PLACEHOLDERS DE IMAGEN
   ============================================================ */
.ph {
  margin: 0;
  width: 100%;
  border: 1.5px dashed var(--slate-300);
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(45deg,
      rgba(26, 111, 191, 0.04) 0 14px,
      rgba(26, 111, 191, 0.09) 14px 28px),
    var(--blue-50);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 28px;
}

.ph-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--blue-600);
  background: #fff;
  border: 1px solid var(--blue-100);
  border-radius: 999px;
  padding: 5px 12px;
}

.ph-idea {
  font-size: 0.88rem;
  color: var(--slate-500);
  max-width: 42ch;
  line-height: 1.5;
}

.ph-file {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--slate-400);
}

.ph-dark {
  background:
    repeating-linear-gradient(45deg,
      rgba(255, 255, 255, 0.025) 0 14px,
      rgba(255, 255, 255, 0.06) 14px 28px),
    var(--navy-800);
  border-color: var(--navy-700);
}
.ph-dark .ph-idea { color: var(--slate-300); }
.ph-dark .ph-file { color: var(--slate-400); }
.ph-dark .ph-tag {
  background: var(--navy-900);
  border-color: var(--navy-700);
  color: var(--blue-500);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--navy-950);
  color: var(--slate-300);
  padding-top: 72px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.7fr 1.1fr;
  gap: 48px;
  padding-bottom: 56px;
}

.brand-mark-lg { font-size: 1.4rem; display: inline-block; margin-bottom: 18px; }

.footer-brand p { font-size: 0.95rem; color: var(--slate-400); max-width: 38ch; }

.site-footer h3 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.footer-nav ul,
.footer-contact ul { list-style: none; }

.footer-nav li,
.footer-contact li { margin-bottom: 10px; }

.site-footer a { color: var(--slate-300); }
.site-footer a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: 22px;
}
.footer-bottom p { font-size: 0.85rem; color: var(--slate-400); }

/* ============================================================
   WHATSAPP FLOTANTE
   ============================================================ */
.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #1faa53;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(13, 60, 32, 0.35);
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}
.whatsapp-float:hover {
  transform: translateY(-3px) scale(1.05);
  background: #23bd5d;
  color: #fff;
}

/* ============================================================
   ANIMACIONES (reveal on scroll)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.7s var(--ease) var(--d, 0s),
    transform 0.7s var(--ease) var(--d, 0s);
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .service-card, .project-card, .whatsapp-float, .btn { transition: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-grid { gap: 40px; }
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .section { padding-block: 72px; }

  /* Navegación móvil */
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--navy-950);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 24px 28px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
  }

  body.nav-open .main-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  body.nav-open .site-header { background: var(--navy-950); }

  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }
  .main-nav ul a {
    display: block;
    padding: 14px 0;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .main-nav ul a::after { display: none; }

  .btn-nav { margin-top: 18px; text-align: center; }

  /* Hero en móvil: la persona pasa a fondo sutil para no tapar el texto */
  .hero-persona {
    height: 52%;
    right: -8%;
    opacity: 0.35;
    z-index: 1;
  }
  .hero-content { padding-top: calc(var(--header-h) + 48px); padding-bottom: 72px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }

  .pains-grid { grid-template-columns: 1fr; }
  .pain { padding: 24px 0; }
  .pain + .pain { border-left: 0; border-top: 1px solid var(--slate-200); padding-left: 0; }

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

  .projects-list { grid-template-columns: 1fr; }

  .split,
  .band-inner { grid-template-columns: 1fr; gap: 32px; }
  .split-reverse .split-copy { order: 1; }
  .split-reverse .split-media { order: 2; }

  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-form-wrap { padding: 28px 22px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 480px) {
  .container { padding-inline: 18px; }
  .diff-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 22px; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .whatsapp-float { width: 52px; height: 52px; right: 16px; bottom: 16px; }
}