/* ════════════════════════════════════════════════════════════
   3D PRINT — Augusto Perulan
   Fiel a la original: grid + partículas, acento cian.
   ════════════════════════════════════════════════════════════ */

:root {
  --bg: #0b1016;
  --bg-soft: #0f1520;
  --grid: rgba(103, 232, 249, 0.05);
  --card: rgba(20, 28, 43, 0.72);
  --card-solid: #121a28;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(103, 232, 249, 0.28);
  --text-1: #e6edf7;
  --text-2: #94a5bd;
  --text-3: #5d6f8a;
  --accent: #22d3ee;
  --accent-bright: #67e8f9;
  --accent-dim: rgba(34, 211, 238, 0.12);
  --accent-ink: #041f26;
  --font: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --head: 'Space Grotesk', var(--font);
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 50px rgba(2, 6, 12, 0.45);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Fondo: grid + radial ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60rem 40rem at 78% -10%, rgba(34, 211, 238, 0.1), transparent 60%),
    radial-gradient(50rem 34rem at 0% 110%, rgba(43, 148, 255, 0.08), transparent 55%),
    var(--bg);
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(85% 70% at 50% 0%, #000 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(85% 70% at 50% 0%, #000 20%, transparent 100%);
}

#particles {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

::selection { background: var(--accent); color: var(--accent-ink); }

.container { width: min(1140px, 92%); margin-inline: auto; }

section { padding: 110px 0; position: relative; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-block;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: '// ';
  opacity: 0.6;
}

.section-title {
  font-family: var(--head);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  max-width: 24ch;
}

.section-sub {
  color: var(--text-2);
  max-width: 58ch;
  margin: 16px 0 44px;
}

/* ── Barra de navegación ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  padding-inline: max(24px, calc((100% - 1140px) / 2));
  background: rgba(11, 16, 22, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.navbar.is-scrolled {
  border-bottom-color: var(--border);
  background: rgba(10, 15, 21, 0.92);
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-1);
  font-family: var(--head);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.navbar__brand .brand-cube {
  color: var(--accent);
  display: inline-flex;
}

.navbar__brand strong { font-weight: 700; }

.navbar__brand .brand-print { color: var(--accent); }

.navbar__links {
  display: flex;
  list-style: none;
  gap: 6px;
}

.navbar__links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 9px;
  transition: color 0.2s ease, background 0.2s ease;
}

.navbar__links a:hover { color: var(--text-1); background: var(--accent-dim); }

.navbar__right { display: flex; align-items: center; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 600;
  border-radius: 11px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  font-family: var(--font);
}

.btn:hover { transform: translateY(-2px); }

.btn--accent {
  background: linear-gradient(135deg, var(--accent-bright), var(--accent));
  color: var(--accent-ink);
  box-shadow: 0 10px 26px rgba(34, 211, 238, 0.28);
}

.btn--accent:hover { box-shadow: 0 14px 34px rgba(34, 211, 238, 0.4); }

.btn--ghost {
  border-color: var(--border-strong);
  color: var(--accent-bright);
  background: var(--accent-dim);
}

.btn--ghost:hover { background: rgba(34, 211, 238, 0.2); }

.btn--sm { padding: 9px 16px; font-size: 0.88rem; }

.btn--md { padding: 12px 22px; font-size: 0.95rem; }

.btn--lg { padding: 15px 28px; font-size: 1rem; }

.btn[disabled] {
  opacity: 0.45;
  pointer-events: none;
  transform: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 44px;
  min-height: 44px;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}

.hamburger__line {
  width: 24px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.is-open .hamburger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open .hamburger__line:nth-child(2) { opacity: 0; }
.hamburger.is-open .hamburger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 68px 0 auto 0;
  z-index: 49;
  background: rgba(10, 15, 21, 0.98);
  border-bottom: 1px solid var(--border);
  padding: 18px 24px 26px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.mobile-menu.is-open { opacity: 1; transform: none; pointer-events: auto; }

.mobile-menu a {
  color: var(--text-2);
  text-decoration: none;
  padding: 12px 8px;
  font-weight: 500;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.mobile-menu a:hover { color: var(--accent); }

.mobile-menu .btn { margin-top: 14px; }

/* ── Hero ── */
.hero {
  min-height: calc(100vh - 108px);
  display: flex;
  align-items: center;
  padding: 90px 0 70px;
}

.hero__inner { max-width: 820px; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-bright);
  border: 1px solid var(--border-strong);
  background: var(--accent-dim);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 26px;
}

.hero__badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse-dot 2.2s ease-out infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.55); }
  100% { box-shadow: 0 0 0 12px rgba(34, 211, 238, 0); }
}

.hero__title {
  font-family: var(--head);
  font-size: clamp(2.6rem, 6.5vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}

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

.hero__lead {
  font-size: 1.12rem;
  color: var(--text-2);
  max-width: 60ch;
  margin-bottom: 36px;
}

.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.scroll-hint {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
}

.scroll-hint__mouse {
  width: 24px;
  height: 40px;
  border: 1.5px solid var(--text-3);
  border-radius: 14px;
  position: relative;
}

.scroll-hint__mouse::after {
  content: '';
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  border-radius: 3px;
  background: var(--accent);
  animation: scroll-wheel 1.8s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0% { transform: translate(-50%, 0); opacity: 1; }
  70% { transform: translate(-50%, 14px); opacity: 0; }
  100% { transform: translate(-50%, 0); opacity: 0; }
}

/* ── Servicios ── */
.section--soft { background: rgba(15, 21, 32, 0.5); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.service-card:hover::before { opacity: 1; }

.service-card__icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--accent-dim);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  margin-bottom: 20px;
}

.service-card__icon svg { width: 26px; height: 26px; }

.service-card h3 {
  font-family: var(--head);
  font-size: 1.12rem;
  margin-bottom: 8px;
}

.service-card p { color: var(--text-2); font-size: 0.93rem; }

/* ── Trabajos (galería con filtros) ── */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.filter-btn {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text-2);
  background: rgba(20, 28, 43, 0.7);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 11px 18px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover { color: var(--accent-bright); border-color: var(--border-strong); }

.filter-btn.is-active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 600;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card);
  transition: transform 0.25s ease, border-color 0.25s ease;
  position: relative;
}

.gallery-item:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.gallery-item.is-hidden { display: none; }

.gallery-item__thumb {
  aspect-ratio: 4 / 3;
  background: linear-gradient(150deg, rgba(34, 211, 238, 0.14), rgba(15, 23, 42, 0.4));
  position: relative;
  display: grid;
  place-items: center;
  color: rgba(103, 232, 249, 0.55);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.gallery-item__thumb svg { width: 64px; height: 64px; }

.gallery-item__thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.5;
}

.gallery-item__cat {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-bright);
  background: rgba(6, 31, 38, 0.85);
  border: 1px solid var(--border-strong);
  padding: 4px 10px;
  border-radius: 999px;
}

.gallery-item__body { padding: 16px 18px 20px; }

.gallery-item__body h3 { font-family: var(--head); font-size: 1.02rem; margin-bottom: 4px; }

.gallery-item__body p { color: var(--text-2); font-size: 0.88rem; }

/* ── Materiales ── */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.material-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.material-card:hover { transform: translateY(-5px); border-color: var(--border-strong); }

.material-card__badge {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--accent-ink);
  background: var(--accent);
  padding: 5px 12px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.material-card h3 { font-family: var(--head); font-size: 1.1rem; margin-bottom: 6px; }

.material-card p { color: var(--text-2); font-size: 0.9rem; margin-bottom: 16px; }

.material-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }

.material-card__tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-3);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 6px;
}

/* ── Calculadora ── */
.calc-wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 20px;
  align-items: stretch;
}

.calc-card {
  background: var(--card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
}

.calc-card h3 {
  font-family: var(--head);
  font-size: 1.2rem;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.calc-card h3 svg { color: var(--accent); }

.dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  padding: 34px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.dropzone:hover, .dropzone.is-dragover { border-color: var(--accent); background: rgba(34, 211, 238, 0.18); }

.dropzone__icon { color: var(--accent); margin-bottom: 10px; }

.dropzone__title { font-weight: 600; font-size: 0.95rem; }

.dropzone__formats { font-family: var(--mono); font-size: 0.7rem; color: var(--text-3); margin-top: 4px; }

.dropzone.has-file { border-style: solid; }

.dropzone__file { font-family: var(--mono); font-size: 0.78rem; color: var(--accent-bright); margin-top: 8px; word-break: break-all; }

.dropzone__reset {
  margin-top: 10px;
  background: none;
  border: 0;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: 0.72rem;
  text-decoration: underline;
  cursor: pointer;
}

.dropzone__reset:hover { color: var(--accent); }

.calc-selects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 20px;
}

.calc-field label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
}

.calc-field select {
  width: 100%;
  background: rgba(15, 21, 32, 0.8);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-1);
  font-family: var(--font);
  font-size: 16px;
  padding: 11px 12px;
  outline: none;
}

.calc-field select:focus { border-color: var(--accent); }

.results { margin-top: 20px; }

.results.is-empty .result-grid { display: none; }

.result-empty {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-3);
  padding: 22px 0;
  text-align: center;
}

.results.is-empty .result-empty { display: block; }
.results:not(.is-empty) .result-empty { display: none; }

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.result-cell {
  background: rgba(15, 21, 32, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.result-cell__label {
  font-family: var(--mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-3);
  margin-bottom: 4px;
}

.result-cell__value {
  font-family: var(--head);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-bright);
}

.result-cell__unit { font-size: 0.75rem; color: var(--text-3); font-family: var(--mono); margin-left: 4px; }

.results .btn--lg { width: 100%; margin-top: 16px; }

.calc-note {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 14px;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.calc-note svg { flex: none; margin-top: 2px; }

/* ── Cómo trabajamos ── */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  counter-reset: step;
}

.step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  position: relative;
}

.step__num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.7rem;
  color: var(--accent);
  opacity: 0.85;
  display: block;
  margin-bottom: 14px;
}

.step h3 { font-family: var(--head); font-size: 1.05rem; margin-bottom: 6px; }

.step p { color: var(--text-2); font-size: 0.88rem; }

/* ── CTA final ── */
.final-cta {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(40rem 22rem at 50% 100%, rgba(34, 211, 238, 0.16), transparent 70%);
  pointer-events: none;
}

.final-cta h2 {
  font-family: var(--head);
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  line-height: 1.1;
  margin-bottom: 14px;
  position: relative;
}

.final-cta p { color: var(--text-2); margin-bottom: 30px; position: relative; }

.final-cta__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  position: relative;
}

.final-cta__fine {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-3);
  margin-top: 18px;
  position: relative;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  background: rgba(10, 15, 21, 0.6);
  padding: 56px 0 34px;
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer__brand { font-family: var(--head); font-weight: 700; font-size: 1.25rem; display: flex; align-items: center; gap: 10px; }

.footer__brand .brand-print { color: var(--accent); }

.footer__brand + p { color: var(--text-2); font-size: 0.9rem; max-width: 40ch; margin-top: 12px; }

.footer h4 {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-3);
  margin-bottom: 16px;
}

.footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.footer a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.2s ease;
}

.footer a:hover { color: var(--accent); }

.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-3);
}

.footer__eco-links { display: flex; gap: 14px; flex-wrap: wrap; }

.footer__eco-links a { font-size: 0.85rem; }

/* ── Animaciones de aparición ── */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* ── Responsive ── */
@media (max-width: 1024px) {
  .navbar__links, .navbar__right .btn--sm { display: none; }
  .hamburger { display: flex; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .materials-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .calc-wrap { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  section { padding: 84px 0; }
  .services-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .materials-grid { grid-template-columns: 1fr; }
  .calc-selects { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: 26px; }
  .final-cta__actions .btn { width: 100%; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .hero__title { font-size: clamp(2.1rem, 8.5vw, 2.6rem); }
  .steps { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .scroll-hint { display: none; }
}