/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg:          #130d0d;   /* negro cálido, nunca #000 puro */
  --bg-2:        #1b1313;
  --bg-3:        #241a1a;   /* tarjetas */
  --bg-4:        #2e2020;   /* tarjetas hover */
  --cream:       #f3ece7;   /* texto principal, blanco cálido, nunca #fff */
  --cream-2:     #d9cac3;   /* texto de párrafo */
  --mute:        #a3908a;   /* texto secundario / metadatos */
  --accent:      #d81e33;   /* rojo torre */
  --accent-2:    #ff4a5e;   /* rojo brillante, hover */
  --accent-dark: #6f0e19;
  --line:        rgba(243,236,231,.10);
  --line-strong: rgba(243,236,231,.20);
  --shadow-card: 0 20px 50px rgba(0,0,0,.40);
  --shadow-lift: 0 26px 64px rgba(216,30,51,.18), 0 10px 30px rgba(0,0,0,.5);
  --radius:      18px;
  --radius-sm:   10px;

  --ease-out:    cubic-bezier(.16,1,.3,1);
  --ease-soft:   cubic-bezier(.25,.46,.45,.94);
  --ease-bounce: cubic-bezier(.34,1.56,.64,1);

  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
  scroll-behavior: smooth;
  overflow-x: clip;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--cream-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}

img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.05; font-family: var(--font-display); font-weight: 600; color: var(--cream); }
ul { list-style: none; padding: 0; }

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

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

.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 9999;
  padding: .7rem 1.2rem;
  background: var(--cream); color: var(--bg);
  border-radius: 8px; font-weight: 600;
  transition: top .3s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: 1180px; margin-inline: auto; padding-inline: 1.5rem; }

.eyebrow {
  font-family: var(--font-body);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: .9rem;
}

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-split] { opacity: 1; transform: none; }

/* =============================================================
   4. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .95rem 1.7rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .98rem;
  letter-spacing: .01em;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out), background .3s var(--ease-out), border-color .3s var(--ease-out);
  white-space: nowrap;
}
.btn-icon { width: 18px; height: 18px; flex-shrink: 0; transition: transform .35s var(--ease-out); }
.btn:hover .btn-icon { transform: translateX(3px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent-2), var(--accent) 60%, var(--accent-dark));
  color: var(--cream);
  box-shadow: 0 14px 34px rgba(216,30,51,.35);
}
.btn-primary:hover { box-shadow: 0 18px 44px rgba(216,30,51,.5); transform: translateY(-2px); }

.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--cream);
  background: rgba(243,236,231,.03);
}
.btn-ghost:hover { border-color: var(--accent-2); background: rgba(216,30,51,.08); }

.btn-small { padding: .6rem 1.3rem; font-size: .88rem; }

/* =============================================================
   5. Logo
   ============================================================= */
.logo-mark { width: 34px; height: auto; overflow: visible; }
.logo-mark--hero { width: 84px; margin-inline: auto; margin-bottom: 1.6rem; filter: drop-shadow(0 12px 34px rgba(216,30,51,.45)); }
.logo-mark--small { width: 26px; }
.tower-window { fill: var(--bg-2); opacity: .92; }

/* =============================================================
   6. Nav
   ============================================================= */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(19,13,13,.7);
  border-bottom: 1px solid transparent;
  transition: border-color .4s var(--ease-out), background .4s var(--ease-out);
}
.nav.is-scrolled {
  background: rgba(19,13,13,.92);
  border-color: var(--line);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}
@supports not (backdrop-filter: blur(1px)) {
  .nav.is-scrolled { background: rgba(15,10,10,.98); }
}

.nav-inner {
  max-width: 1180px; margin-inline: auto; padding: .9rem 1.5rem;
  display: flex; align-items: center; gap: 2rem;
}

.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.32rem;
  color: var(--accent-2);
  letter-spacing: .01em;
}

.nav-links { display: none; gap: 2rem; margin-inline-start: auto; }
.nav-links a {
  position: relative; font-size: .92rem; font-weight: 500; color: var(--cream-2);
  padding-block: .3rem;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--accent-2);
  transition: right .35s var(--ease-out);
}
.nav-links a:hover { color: var(--cream); }
.nav-links a:hover::after { right: 0; }

.nav .btn-small { display: none; margin-inline-start: .5rem; }

.nav-toggle {
  margin-inline-start: auto;
  width: 40px; height: 40px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--cream); transition: transform .3s var(--ease-out), opacity .3s var(--ease-out); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: grid; gap: 1rem;
  max-height: 0; overflow: hidden;
  padding-inline: 1.5rem;
  background: var(--bg-2);
  border-bottom: 1px solid transparent;
  transition: max-height .45s var(--ease-soft), padding .45s var(--ease-soft), border-color .45s;
}
.mobile-menu.is-open { max-height: 500px; padding-block: 1.2rem 1.6rem; border-color: var(--line); }
.mobile-menu a { font-size: 1rem; font-weight: 500; color: var(--cream-2); }
.mobile-menu a:hover { color: var(--accent-2); }
.mobile-menu .btn { width: fit-content; }

/* =============================================================
   7. Hero
   ============================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  padding: 7rem 1.5rem 5rem;
  overflow: clip;
}

.hero-glow {
  position: absolute; inset: -20% -10% auto -10%; height: 130%;
  background: radial-gradient(48% 42% at 50% 32%, rgba(216,30,51,.30), transparent 72%);
  filter: blur(10px);
  animation: glowBreathe 9s ease-in-out infinite;
  pointer-events: none;
}
.hero-glow--contact { inset: 10% -10% auto -10%; height: 90%; }
@keyframes glowBreathe {
  0%, 100% { opacity: .75; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.08); }
}

.hero-grain {
  position: absolute; inset: 0; pointer-events: none; opacity: .05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.hero-inner { position: relative; z-index: 1; max-width: 760px; }

.hero-title {
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  color: var(--accent-2);
  text-shadow: 0 8px 40px rgba(216,30,51,.35);
  max-width: 14ch;
  margin-inline: auto;
}

.hero-subtitle {
  margin-top: .9rem;
  font-family: var(--font-body);
  font-size: clamp(.95rem, 1.6vw, 1.15rem);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mute);
}

.hero-lede {
  margin: 1.8rem auto 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--cream-2);
}

.hero-actions {
  margin-top: 2.6rem;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 1rem;
}

/* =============================================================
   8. Reasons section
   ============================================================= */
.reasons, .contact, .portfolio, .faq, .process { padding-block: 6rem; position: relative; }
.contact { padding-block: 5rem 5.5rem; overflow: clip; }

.section-title {
  font-size: clamp(2rem, 4.2vw, 3rem);
  max-width: 18ch;
}
.section-lede {
  margin-top: 1.2rem;
  max-width: 58ch;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  color: var(--cream-2);
}

.reasons-grid {
  margin-top: 3.2rem;
  display: grid;
  gap: 1.2rem;
  grid-template-columns: 1fr;
}

.card {
  --mx: 50%; --my: 50%;
  position: relative;
  padding: 2rem 1.8rem;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: box-shadow .5s var(--ease-out), border-color .5s var(--ease-out), background .5s var(--ease-out);
  transform-style: preserve-3d;
  will-change: transform;
}
.card::before {
  content: "";
  position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(280px circle at var(--mx) var(--my), rgba(216,30,51,.16), transparent 70%);
  opacity: 0; transition: opacity .4s var(--ease-out);
  pointer-events: none;
}
.card:hover {
  border-color: var(--line-strong);
  background: var(--bg-4);
  box-shadow: var(--shadow-lift);
}
.card:hover::before { opacity: 1; }

.card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(216,30,51,.22), rgba(216,30,51,.06));
  color: var(--accent-2);
  margin-bottom: 1.3rem;
}
.card-icon svg { width: 26px; height: 26px; }

.card h3 { font-size: 1.28rem; margin-bottom: .6rem; }
.card p { font-size: .96rem; color: var(--cream-2); }

.stats {
  margin-top: 4.5rem;
  display: grid;
  gap: 2.4rem;
  grid-template-columns: 1fr;
  padding-top: 3.5rem;
  border-top: 1px solid var(--line);
}
.stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 6vw, 3.6rem);
  color: var(--accent-2);
  line-height: 1;
}
.stat-label { margin-top: .6rem; max-width: 32ch; color: var(--mute); font-size: .92rem; }

/* =============================================================
   9. Portfolio section
   ============================================================= */
.portfolio-grid {
  margin-top: 3.2rem;
  display: grid;
  gap: 1.2rem;
  grid-template-columns: 1fr;
}

.portfolio-item h3 { margin-top: 1.3rem; font-size: 1.28rem; }
.portfolio-item p { margin-top: .3rem; font-size: .92rem; color: var(--mute); }
.portfolio-item .contact-cta { margin-top: 1rem; }

.browser-frame {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-2);
}

.browser-bar {
  display: flex; align-items: center; gap: .4rem;
  padding: .6rem .8rem;
  background: var(--bg-4);
  border-bottom: 1px solid var(--line);
}
.browser-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); flex-shrink: 0; }
.browser-dot--red { background: #ff5f57; }
.browser-dot--yellow { background: #febc2e; }
.browser-dot--green { background: #28c840; }
.browser-url {
  margin-inline-start: .5rem;
  font-size: .72rem;
  color: var(--mute);
  background: rgba(243,236,231,.05);
  padding: .2rem .8rem;
  border-radius: 999px;
  flex: 1;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.browser-viewport {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1400 / 900;
  background: var(--bg-2);
}
.browser-iframe {
  position: absolute; top: 0; left: 0;
  width: 1400px; height: 900px;
  border: 0;
  pointer-events: none;
  transform: scale(var(--iframe-scale, .25));
  transform-origin: top left;
  background: var(--bg-2);
}

/* =============================================================
   10. Process section
   ============================================================= */
.process-grid {
  margin-top: 3.2rem;
  display: grid;
  gap: 1.2rem;
  grid-template-columns: 1fr;
}

.process-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--accent-2);
  opacity: .85;
  margin-bottom: 1rem;
}

.process-step h3 { font-size: 1.28rem; margin-bottom: .6rem; }
.process-step p { font-size: .96rem; color: var(--cream-2); }

/* =============================================================
   11. FAQ section
   ============================================================= */
.faq-list {
  margin-top: 2.6rem;
  max-width: 760px;
  display: grid;
  gap: .8rem;
}

.faq-item {
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0;
  transition: border-color .4s var(--ease-out), background .4s var(--ease-out);
}
.faq-item:hover { border-color: var(--line-strong); }
.faq-item[open] { background: var(--bg-4); }

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
  color: var(--cream);
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { content: ""; }
.faq-item summary:hover { color: var(--accent-2); }

.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 20px; height: 20px;
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute; top: 50%; left: 50%;
  background: var(--accent-2);
  transform: translate(-50%, -50%);
  transition: transform .35s var(--ease-out);
}
.faq-icon::before { width: 14px; height: 2px; }
.faq-icon::after { width: 2px; height: 14px; }
.faq-item[open] .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg) scaleY(0); }

.faq-item p {
  padding: 0 1.4rem 1.3rem;
  font-size: .96rem;
  color: var(--cream-2);
}

/* =============================================================
   12. Contact section
   ============================================================= */
.contact-grid {
  margin-top: 2.2rem;
  display: grid;
  gap: .9rem;
  grid-template-columns: 1fr;
  max-width: 620px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.3rem;
}
.contact-card .card-icon {
  width: 42px; height: 42px;
  margin-bottom: 0;
  flex-shrink: 0;
}
.contact-card .card-icon svg { width: 20px; height: 20px; }
.contact-card-body { min-width: 0; }
.contact-card h3 { font-size: 1rem; margin-bottom: .15rem; }
.contact-value {
  font-size: .88rem;
  font-weight: 500;
  color: var(--cream-2);
  margin-bottom: .3rem;
  word-break: break-word;
}
.contact-cta {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .8rem; font-weight: 600;
  color: var(--accent-2);
}
.contact-cta .btn-icon { width: 14px; height: 14px; }
.contact-card:hover .contact-cta .btn-icon { transform: translateX(3px); }

/* =============================================================
   13. Footer
   ============================================================= */
.footer {
  padding-block: 3.5rem 2.6rem;
  border-top: 1px solid var(--line);
  text-align: center;
}
.footer-inner { display: grid; gap: .5rem; justify-items: center; }
.brand-footer { margin-bottom: .2rem; }
.footer-tagline {
  font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; color: var(--mute);
}
.footer-copy { margin-top: 1.4rem; font-size: .82rem; color: var(--mute); }

/* =============================================================
   14. Responsive (mobile-first)
   ============================================================= */
@media (min-width: 540px) {
  .reasons-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 720px) {
  .stats { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 960px) {
  .nav-links { display: flex; }
  .nav .btn-small { display: inline-flex; }
  .nav-toggle { display: none; }
  .mobile-menu { display: none; }

  .reasons-grid { grid-template-columns: repeat(3, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1280px) {
  .reasons, .contact, .portfolio, .faq, .process { padding-block: 8rem; }
}

/* =============================================================
   15. Reduced motion — only intrusive effects
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .hero-glow { animation: none; }
  .reveal { transition-duration: .25s; }
}