/* ALFA CARBON — Sistema de diseño */

:root {
  /* Paleta */
  --bg: #F5F1EA;
  --bg-warm: #EFE9DD;
  --paper: #FBF8F2;
  --paper-deep: #E8E1D2;
  --ink: #0F1839;
  --ink-soft: #1A2456;
  --ink-muted: #4A5070;
  --accent: #E94B23;
  --accent-deep: #C73E1D;
  --accent-soft: #F5C9B8;
  --muted: #6B6660;
  --muted-light: #A8A39A;
  --line: rgba(15, 24, 57, 0.18);
  --line-strong: rgba(15, 24, 57, 0.45);

  /* Tipografía — Manrope (legible y con personalidad) + JetBrains Mono (técnico) */
  --font-display: 'Manrope', system-ui, -apple-system, sans-serif;
  --font-body: 'Manrope', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  background: var(--bg);
  color: var(--ink);
  font-feature-settings: 'ss01' 1, 'ss02' 1, 'ss03' 1, 'ss05' 1;
  -webkit-text-size-adjust: 100%;
  letter-spacing: -0.005em;
}

/* Utilidades de fuente */
.font-display { font-family: var(--font-display); font-feature-settings: 'liga' 1, 'dlig' 1, 'ss01' 1; }
.font-mono { font-family: var(--font-mono); }
.font-body { font-family: var(--font-body); }

/* Variaciones de Manrope para titulares editoriales
   Estrategia: contraste extremo de pesos (200 vs 800) reemplaza el contraste de cursiva.
   Letter-spacing negativo agresivo da el toque editorial. */
.disp-hero {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: -0.045em;
  line-height: 0.95;
  font-feature-settings: 'ss01' 1, 'ss02' 1, 'ss03' 1, 'ss04' 1, 'ss05' 1;
}
.disp-hero-bold {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.92;
  font-feature-settings: 'ss01' 1, 'ss02' 1, 'ss03' 1, 'ss04' 1, 'ss05' 1;
}
/* "disp-italic" ya no es itálica — es CONTRASTE: bold + accent color.
   Mantiene el efecto editorial pero con tipografía sans más legible. */
.disp-italic {
  font-family: var(--font-display);
  font-weight: 800;
  font-style: normal;
  letter-spacing: -0.045em;
  font-feature-settings: 'ss01' 1, 'ss02' 1, 'ss03' 1;
}
.num-display {
  font-family: var(--font-display);
  font-weight: 200;
  line-height: 0.85;
  letter-spacing: -0.055em;
  font-feature-settings: 'lnum' 1, 'ss01' 1;
}
.num-display-bold {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.06em;
  font-feature-settings: 'lnum' 1, 'ss01' 1;
}

/* Colores */
.ink { color: var(--ink); }
.ink-soft { color: var(--ink-soft); }
.ink-muted { color: var(--ink-muted); }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.bg-ink { background-color: var(--ink); }
.bg-paper { background-color: var(--paper); }
.bg-paper-deep { background-color: var(--paper-deep); }
.bg-warm { background-color: var(--bg-warm); }
.bg-accent { background-color: var(--accent); }
.bg-accent-soft { background-color: var(--accent-soft); }

/* Hairlines */
.rule-t { border-top: 1px solid var(--line); }
.rule-b { border-bottom: 1px solid var(--line); }
.rule-l { border-left: 1px solid var(--line); }
.rule-r { border-right: 1px solid var(--line); }
.rule-strong { border-color: var(--line-strong) !important; }
.rule-double-b {
  border-bottom: 1px solid var(--line);
  box-shadow: 0 3px 0 -1px var(--bg), 0 4px 0 -1px var(--line);
}

/* Grain texture overlay */
.grain {
  position: relative;
}
.grain::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.06  0 0 0 0 0.09  0 0 0 0 0.22  0 0 0 0.07 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.5;
  pointer-events: none;
  mix-blend-mode: multiply;
  z-index: 1;
}
.grain > * { position: relative; z-index: 2; }

/* Marquee */
.marquee {
  display: flex;
  overflow: hidden;
  user-select: none;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track {
  flex-shrink: 0;
  display: flex;
  gap: 4rem;
  padding-right: 4rem;
  animation: marquee 60s linear infinite;
  white-space: nowrap;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

/* Reveal animation */
@keyframes rise {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes rise-soft {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scale-in {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}
.rise { animation: rise 0.95s cubic-bezier(0.2, 0.85, 0.2, 1) backwards; }
.rise-soft { animation: rise-soft 0.7s cubic-bezier(0.2, 0.85, 0.2, 1) backwards; }
.scale-in { animation: scale-in 1s cubic-bezier(0.2, 0.85, 0.2, 1) backwards; }
.delay-1 { animation-delay: 0.08s; }
.delay-2 { animation-delay: 0.18s; }
.delay-3 { animation-delay: 0.28s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.55s; }
.delay-6 { animation-delay: 0.7s; }
.delay-7 { animation-delay: 0.85s; }

/* Link rule animation */
.link-rule {
  position: relative;
  display: inline-block;
  text-decoration: none;
  color: inherit;
}
.link-rule::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: currentColor;
  transform-origin: right;
  transform: scaleX(1);
  transition: transform 0.5s cubic-bezier(0.65,0,0.35,1);
}
.link-rule:hover::after {
  transform-origin: right;
  transform: scaleX(0);
  animation: line-redraw 1s 0.4s cubic-bezier(0.65,0,0.35,1) forwards;
}
@keyframes line-redraw {
  from { transform-origin: left; transform: scaleX(0); }
  to { transform-origin: left; transform: scaleX(1); }
}

/* Stamp / vintage badge */
.stamp {
  border: 1.5px solid currentColor;
  border-radius: 9999px;
  padding: 0.45rem 1.05rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-block;
  font-weight: 500;
}

/* Mono labels (etiquetas técnicas) */
.tech-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-weight: 500;
}

/* Botones */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1.05rem 1.85rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--ink);
  transition: all 0.4s cubic-bezier(0.2,0.8,0.2,1);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateY(101%);
  transition: transform 0.5s cubic-bezier(0.65,0,0.35,1);
  z-index: 0;
}
.btn-primary > * { position: relative; z-index: 1; }
.btn-primary:hover::before { transform: translateY(0); }
.btn-primary:hover { border-color: var(--accent); color: white; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1.05rem 1.85rem;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--line-strong);
  transition: all 0.4s cubic-bezier(0.2,0.8,0.2,1);
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* Arrow icons */
.arrow {
  display: inline-block;
  transition: transform 0.4s cubic-bezier(0.65,0,0.35,1);
}
*:hover > .arrow,
*:hover .arrow {
  transform: translateX(4px);
}

/* Editorial drop cap */
.drop-cap::first-letter {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 4.4em;
  float: left;
  line-height: 0.85;
  margin: 0.06em 0.14em 0 0;
  color: var(--accent);
  letter-spacing: -0.04em;
}

/* Line decorations for sections */
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
}
.section-tag::before {
  content: '';
  width: 38px;
  height: 1px;
  background: var(--accent);
}

/* Card hover */
.card-hover {
  transition: all 0.5s cubic-bezier(0.2,0.85,0.2,1);
}
.card-hover:hover {
  transform: translateY(-4px);
}

/* Nav blur */
.nav-blur {
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  background: rgba(245, 241, 234, 0.85);
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-warm); }
::-webkit-scrollbar-thumb { background: var(--ink-muted); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--ink); }

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

/* Image placeholders con estilo */
.img-placeholder {
  background:
    linear-gradient(135deg, transparent 49%, var(--line) 49.5%, var(--line) 50.5%, transparent 51%),
    linear-gradient(45deg, transparent 49%, var(--line) 49.5%, var(--line) 50.5%, transparent 51%),
    var(--bg-warm);
  position: relative;
  overflow: hidden;
}
.img-placeholder::after {
  content: attr(data-label);
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  text-align: center;
  background: var(--paper);
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  white-space: nowrap;
}

/* Imagen producto especial — escobilla de carbono renderizada en CSS */
.brush-render {
  position: relative;
  background: linear-gradient(135deg, #2A2A2A 0%, #1A1A1A 50%, #0F0F0F 100%);
  overflow: hidden;
}
.brush-render::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 25%, rgba(255,255,255,0.04) 0%, transparent 35%),
    radial-gradient(circle at 70% 80%, rgba(233,75,35,0.06) 0%, transparent 40%);
}
.brush-block {
  position: absolute;
  background: linear-gradient(180deg, #4A4A4A 0%, #2A2A2A 50%, #1A1A1A 100%);
  border: 1px solid #0A0A0A;
  box-shadow:
    inset 0 0 20px rgba(0,0,0,0.6),
    0 30px 60px rgba(0,0,0,0.5);
}

/* Tabla técnica */
.spec-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.spec-row:last-child { border-bottom: none; }
.spec-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.spec-value {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  font-weight: 500;
}

/* Cursor for important */
.cursor-aim { cursor: crosshair; }

/* Form */
.form-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  padding: 1rem 0 0.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.3s;
}
.form-input:focus { border-bottom-color: var(--accent); }
.form-input::placeholder { color: var(--muted-light); }

.form-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: block;
  margin-bottom: 0.5rem;
}

/* Textarea */
.form-textarea {
  width: 100%;
  background: transparent;
  border: 1px solid var(--line-strong);
  padding: 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  outline: none;
  resize: vertical;
  transition: border-color 0.3s;
  min-height: 140px;
}
.form-textarea:focus { border-color: var(--accent); }

/* Checkbox custom */
.check-line {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
}
.check-box {
  width: 14px; height: 14px;
  border: 1px solid var(--line-strong);
  display: inline-block;
  position: relative;
  flex-shrink: 0;
}

/* Decorative dot */
.dot {
  display: inline-block;
  width: 4px; height: 4px;
  background: currentColor;
  border-radius: 50%;
  vertical-align: middle;
  margin: 0 0.5rem;
}

/* Container helpers */
.container-edge {
  max-width: 1480px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}
@media (min-width: 768px) {
  .container-edge { padding-left: 2.5rem; padding-right: 2.5rem; }
}
@media (min-width: 1280px) {
  .container-edge { padding-left: 3.5rem; padding-right: 3.5rem; }
}

/* Hero number — extreme size */
.year-massive {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(8rem, 22vw, 22rem);
  line-height: 0.78;
  letter-spacing: -0.07em;
  font-feature-settings: 'lnum' 1;
}

/* ============================================
   BOTÓN FLOTANTE WHATSAPP — píldora navy minimalista
   ============================================ */
a.wa-float,
.wa-float {
  position: fixed !important;
  bottom: 22px !important;
  right: 22px !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 10px !important;
  padding: 13px 20px !important;
  background-color: #0F1839 !important;
  color: #FBF8F2 !important;
  border-radius: 999px !important;
  z-index: 99999 !important;
  text-decoration: none !important;
  box-shadow:
    0 6px 20px rgba(15, 24, 57, 0.18),
    0 2px 6px rgba(15, 24, 57, 0.12) !important;
  transition: transform 0.35s cubic-bezier(0.2, 0.85, 0.2, 1),
              background-color 0.35s ease,
              box-shadow 0.35s ease !important;
  font-family: 'Manrope', system-ui, sans-serif !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  letter-spacing: 0.01em !important;
  line-height: 1 !important;
  margin: 0 !important;
  border: 0 !important;
  cursor: pointer !important;
  white-space: nowrap !important;
}
a.wa-float:hover,
.wa-float:hover {
  background-color: #25D366 !important;
  transform: translateY(-2px) !important;
  box-shadow:
    0 10px 28px rgba(37, 211, 102, 0.32),
    0 4px 10px rgba(15, 24, 57, 0.18) !important;
}
.wa-float svg {
  width: 18px !important;
  height: 18px !important;
  fill: #25D366 !important;
  display: block !important;
  flex-shrink: 0 !important;
  transition: fill 0.35s ease !important;
}
.wa-float:hover svg {
  fill: white !important;
}
.wa-float .wa-label {
  display: inline-block !important;
  position: relative !important;
  top: 0.5px !important;
}
@media (max-width: 540px) {
  a.wa-float,
  .wa-float {
    bottom: 18px !important;
    right: 18px !important;
    padding: 13px 16px !important;
    font-size: 12px !important;
  }
}