/* ============================================================
   ARRIETE SERVICES & LOGISTICS — design system
   Dark industrial / blueprint. Cobalt + amber. Space Grotesk + Inter.
   ============================================================ */

:root{
  --ink:        #03192E;
  --ink-2:      #072440;
  --ink-3:      #0C3052;
  --ink-line:   rgba(255,255,255,.12);
  --ink-line-2: rgba(255,255,255,.07);
  --on-ink:     #F4F7FA;
  --on-ink-muted: rgba(244,247,250,.70);
  --on-ink-faint: rgba(244,247,250,.60);
  --ink-field:  rgba(244,247,250,.45);

  --paper:      #EDF2F5;
  --paper-2:    #E2E9EE;
  --text:       #03213B;
  --muted:      #44566A;
  --muted-2:    #6A7A8B;
  --line:       rgba(3,33,59,.13);
  --line-2:     rgba(3,33,59,.08);

  --accent:      #12C07C;
  --accent-dim:  #066B43;
  --accent-soft: rgba(12,173,110,.14);
  --signal:      #12C07C;
  --signal-soft: rgba(18,192,124,.14);

  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-sans:    "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --fs-display: clamp(2.5rem, 1.35rem + 5.6vw, 5.4rem);
  --fs-h2:      clamp(1.9rem, 1.3rem + 2.6vw, 3.1rem);
  --fs-h3:      clamp(1.2rem, 1.08rem + .6vw, 1.5rem);
  --fs-lead:    clamp(1.05rem, .98rem + .4vw, 1.25rem);
  --fs-body:    clamp(1rem, .97rem + .12vw, 1.05rem);
  --fs-small:   .85rem;
  --fs-eyebrow: .78rem;

  --gutter: clamp(1.15rem, 4.5vw, 3rem);
  --maxw: 1240px;
  --section-y: clamp(4rem, 9vw, 7.5rem);

  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 2px; /* deliberately near-square: industrial, not soft */

  --ease: cubic-bezier(.2,.7,.15,1);
  --shadow-lg: 0 30px 80px -30px rgba(0,0,0,.55);
  --shadow-sm: 0 10px 24px -14px rgba(0,0,0,.4);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink);
  color:var(--on-ink);
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
[hidden]{display:none !important;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,p{margin:0;}
button{font:inherit;border:none;background:none;cursor:pointer;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}

.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--signal);color:var(--ink);padding:.6rem 1rem;z-index:999;
}
.skip-link:focus{left:1rem;top:1rem;}

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

.kicker{
  font-family:var(--font-mono);
  font-size:var(--fs-eyebrow);
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  margin:0 0 1rem;
}
[data-theme-light] .kicker, .why .kicker, .faq .kicker{color:var(--accent);}

.section__title{
  font-family:var(--font-display);
  font-size:var(--fs-h2);
  font-weight:600;
  line-height:1.08;
  letter-spacing:-.01em;
  max-width:26ch;
  margin:0 0 1.1rem;
}
.section__lead{
  font-size:var(--fs-lead);
  color:var(--on-ink-muted);
  max-width:56ch;
  margin:0 0 2.8rem;
}
.why .section__lead, .faq .section__lead,
.services .section__lead, .workshops .section__lead{color:var(--muted);}

/* ---------- reveal-on-scroll ---------- */
[data-reveal], [data-reveal-group] > *{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].is-visible, [data-reveal-group].is-visible > *{
  opacity:1;
  transform:translateY(0);
}
[data-reveal-group] > *{transition-delay:calc(var(--i, 0) * 70ms);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--font-sans);font-weight:600;font-size:.95rem;
  padding:.85rem 1.5rem;
  border-radius:var(--r-lg);
  transition:transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--accent);color:var(--ink);}
.btn--primary:hover{transform:translateY(-2px);background:#2BD592;}
.btn--ghost{border:1px solid var(--ink-line);color:var(--on-ink);}
.btn--ghost:hover{border-color:var(--on-ink);transform:translateY(-2px);}
.btn--sm{padding:.6rem 1.15rem;font-size:.85rem;}
.btn--block{width:100%;justify-content:center;white-space:normal;text-align:center;line-height:1.3;}

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(3,25,46,.84);
  backdrop-filter:blur(10px) saturate(140%);
  border-bottom:1px solid var(--ink-line-2);
}
.nav__inner{
  max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);
  height:72px;display:flex;align-items:center;gap:2rem;
}
.brand{display:flex;align-items:center;gap:.6rem;margin-right:auto;}
.brand__logo{display:block;height:48px;width:auto;}
.nav__links{display:flex;gap:1.75rem;}
.nav__links a{font-size:.92rem;color:var(--on-ink-muted);transition:color .2s;}
.nav__links a:hover{color:var(--on-ink);}
.nav__cta{margin-left:.5rem;}
.nav__toggle{display:none;flex-direction:column;gap:5px;padding:.5rem;}
.nav__toggle span{width:22px;height:2px;background:var(--on-ink);display:block;transition:transform .25s,opacity .25s;}
.nav__mobile{
  display:none;flex-direction:column;gap:1.1rem;
  padding:1.25rem var(--gutter) 1.75rem;
  border-top:1px solid var(--ink-line-2);
}
.nav__mobile a{font-size:1rem;color:var(--on-ink-muted);}
.nav.is-open .nav__mobile{display:flex;}
.nav.is-open .nav__toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav.is-open .nav__toggle span:nth-child(2){opacity:0;}
.nav.is-open .nav__toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;
  padding:clamp(3rem,8vw,6rem) 0 clamp(2.5rem,6vw,4rem);
  overflow:hidden;
  border-bottom:1px solid var(--ink-line-2);
}
.hero__grid{
  position:absolute;inset:0;z-index:0;
  background-image:
    linear-gradient(var(--ink-line-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-line-2) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 60% at 60% 20%, black, transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 60% 20%, black, transparent 75%);
}
.hero::after{
  content:"";position:absolute;top:-20%;right:-10%;width:60%;height:80%;z-index:0;
  background:radial-gradient(circle, rgba(18,192,124,.17), transparent 70%);
  filter:blur(10px);
}
.hero__inner{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
.eyebrow{
  display:flex;align-items:flex-start;gap:.6rem;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:var(--fs-eyebrow);letter-spacing:.13em;
  color:var(--on-ink-muted);text-transform:uppercase;margin:0 0 1.75rem;
}
.eyebrow__dash{width:22px;height:1px;margin-top:.5em;background:var(--signal);display:inline-block;flex-shrink:0;}
.eyebrow__text{min-width:0;flex:1 1 auto;}
.hero__title{
  font-family:var(--font-display);font-weight:600;
  font-size:var(--fs-display);line-height:1.02;letter-spacing:-.015em;
  max-width:19ch;margin:0 0 1.75rem;
}
.accent-em{font-style:normal;color:var(--signal);}
.hero__lead{
  font-size:var(--fs-lead);color:var(--on-ink-muted);max-width:46ch;margin:0 0 2.5rem;
}
.hero__lead strong{color:var(--on-ink);font-weight:600;}
.hero__cta{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:clamp(3rem,7vw,5rem);}
.hero__stats{
  position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:1.75rem var(--gutter) 0;
  display:grid;grid-template-columns:repeat(4,1fr) auto;gap:1.5rem;
  border-top:1px solid var(--ink-line-2);
}
.stat{display:flex;flex-direction:column;gap:.35rem;}
.stat__num{font-family:var(--font-display);font-weight:600;font-size:1.6rem;color:var(--on-ink);}
.stat__label{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.09em;color:var(--on-ink-faint);text-transform:uppercase;}
.stat--scroll{justify-self:end;align-items:flex-end;justify-content:center;}
.stat__scroll{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.2em;color:var(--on-ink-faint);
  writing-mode:vertical-rl;animation:pulse 2.4s infinite ease-in-out;
}
@keyframes pulse{0%,100%{opacity:.4;}50%{opacity:1;}}

/* ============================================================
   STRIP / marquee
   ============================================================ */
.strip{padding:2.5rem 0;border-bottom:1px solid var(--ink-line-2);overflow:hidden;}
.strip__caption{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--on-ink-faint);text-align:center;margin:0 0 1.5rem;padding:0 var(--gutter);
}
.strip__track{display:flex;width:max-content;animation:marquee 34s linear infinite;}
.strip__row{display:flex;gap:clamp(2rem,5vw,4rem);padding-right:clamp(2rem,5vw,4rem);}
.strip__row span{
  font-family:var(--font-display);font-weight:600;font-size:1.3rem;color:var(--on-ink-faint);
  white-space:nowrap;
}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* ============================================================
   PITCH
   ============================================================ */
.pitch{padding:var(--section-y) 0;border-bottom:1px solid var(--ink-line-2);}
.pitch__title{
  font-family:var(--font-display);font-weight:600;font-size:var(--fs-h2);line-height:1.1;
  max-width:20ch;margin:0 0 1.5rem;
}
.pitch__body{font-size:var(--fs-lead);color:var(--on-ink-muted);max-width:58ch;}

/* ============================================================
   SERVICES cards
   ============================================================ */
.services{padding:var(--section-y) 0;background:var(--paper);color:var(--text);border-bottom:1px solid var(--line);}
.services .kicker{color:var(--accent-dim);}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.card{
  background:var(--paper);padding:2rem 1.9rem;display:flex;flex-direction:column;gap:.9rem;
  transition:background .25s;
}
.card:hover{background:#fff;}
.card__num{font-family:var(--font-mono);font-size:.78rem;color:var(--accent-dim);letter-spacing:.05em;}
.card h3{font-family:var(--font-display);font-size:var(--fs-h3);font-weight:600;line-height:1.2;}
.card p{color:var(--muted);font-size:.95rem;flex-grow:1;}
.tags{display:flex;flex-wrap:wrap;gap:.4rem;}
.tags li{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.03em;text-transform:uppercase;
  background:var(--accent-soft);color:var(--accent-dim);padding:.3rem .55rem;border-radius:2px;
}

/* ============================================================
   CHAIN (modelo 360)
   ============================================================ */
.chain{padding:var(--section-y) 0;border-bottom:1px solid var(--ink-line-2);}
.chain__list{display:flex;flex-direction:column;border-top:1px solid var(--ink-line);margin-bottom:3rem;}
.chain__list li{
  display:flex;gap:1.75rem;align-items:flex-start;padding:1.6rem 0;border-bottom:1px solid var(--ink-line);
}
.chain__n{
  font-family:var(--font-display);font-weight:700;font-size:1.4rem;color:var(--signal);
  min-width:2ch;
}
.chain__list h3{font-family:var(--font-display);font-size:1.05rem;font-weight:600;margin-bottom:.35rem;}
.chain__list p{color:var(--on-ink-muted);max-width:52ch;}
.chain__cta{display:flex;align-items:center;gap:1.75rem;flex-wrap:wrap;}
.chain__cta p{color:var(--on-ink-muted);max-width:38ch;font-size:.95rem;}

/* ============================================================
   WORKSHOPS
   ============================================================ */
.workshops{padding:var(--section-y) 0;background:var(--paper);color:var(--text);border-bottom:1px solid var(--line);}
.workshops .kicker{color:var(--accent-dim);}
.workshop-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.wcard{background:var(--paper);padding:2.25rem;display:flex;flex-direction:column;gap:1rem;}
.wcard h3{font-family:var(--font-display);font-size:1.3rem;font-weight:600;}
.wcard p{color:var(--muted);}

/* ============================================================
   PROCESS
   ============================================================ */
.process{padding:var(--section-y) 0;border-bottom:1px solid var(--ink-line-2);}
.process__list{display:grid;grid-template-columns:repeat(4,1fr);gap:1.75rem;}
.pstep{border-top:2px solid var(--signal);padding-top:1.1rem;}
.pstep__n{font-family:var(--font-mono);font-size:.75rem;color:var(--on-ink-faint);letter-spacing:.08em;}
.pstep h3{font-family:var(--font-display);font-size:1.1rem;font-weight:600;margin:.5rem 0 .6rem;}
.pstep p{color:var(--on-ink-muted);font-size:.92rem;}

/* ============================================================
   WHY
   ============================================================ */
.why{padding:var(--section-y) 0;background:var(--paper);color:var(--text);border-bottom:1px solid var(--line);}
.why .kicker{color:var(--accent-dim);}
.why__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.why__stat,.why__feat{background:var(--paper);padding:1.75rem;}
.why__num{font-family:var(--font-display);font-weight:700;font-size:1.9rem;color:var(--accent-dim);display:block;margin-bottom:.5rem;}
.why__stat p,.why__feat p{color:var(--muted);font-size:.92rem;}
.why__feat{display:flex;align-items:center;}

/* ============================================================
   FAQ
   ============================================================ */
.faq{padding:var(--section-y) 0;border-bottom:1px solid var(--ink-line-2);}
.faq__list{border-top:1px solid var(--ink-line);}
.faq__item{border-bottom:1px solid var(--ink-line);}
.faq__item summary{
  padding:1.4rem 0;font-family:var(--font-display);font-weight:600;font-size:1.02rem;
  cursor:pointer;list-style:none;position:relative;padding-right:2rem;
}
.faq__item summary::-webkit-details-marker{display:none;}
.faq__item summary::after{
  content:"+";position:absolute;right:0;top:1.3rem;font-size:1.3rem;color:var(--signal);
  transition:transform .25s;
}
.faq__item[open] summary::after{transform:rotate(45deg);}
.faq__item p{color:var(--on-ink-muted);padding:0 0 1.5rem;max-width:60ch;}

/* ============================================================
   CONTACT
   ============================================================ */
.contact{padding:var(--section-y) 0;}
.contact__wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(2rem,5vw,5rem);align-items:start;}
.contact__info{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin:2rem 0 1.5rem;}
.contact__label{display:block;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;color:var(--on-ink-faint);margin-bottom:.35rem;}
.contact__info a{font-weight:600;color:var(--on-ink);}
.contact__info a:hover{color:var(--signal);}
.contact__hours{color:var(--on-ink-muted);font-size:.9rem;}

.contact__form{
  background:var(--ink-2);border:1px solid var(--ink-line);border-radius:var(--r-md);
  padding:2rem;display:flex;flex-direction:column;gap:1.1rem;
}
.contact__form h3{font-family:var(--font-display);font-size:1.3rem;font-weight:600;}
.contact__formhint{color:var(--on-ink-muted);font-size:.88rem;margin-top:-.5rem;}
.field{display:flex;flex-direction:column;gap:.45rem;}
.field span{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--on-ink-faint);}
.field input,.field select,.field textarea{
  background:var(--ink);border:1px solid var(--ink-field);border-radius:var(--r-sm);
  padding:.75rem .9rem;color:var(--on-ink);font-size:.95rem;resize:vertical;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);}
.contact__formfoot{font-size:.78rem;color:var(--on-ink-faint);}
.contact__formfoot a{text-decoration:underline;}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{padding:2.75rem 0;border-top:1px solid var(--ink-line-2);}
.footer__inner{display:flex;flex-direction:column;gap:1.1rem;}
.footer__logo{display:block;height:62px;width:auto;max-width:100%;}
.footer__legal{font-size:.78rem;color:var(--on-ink-faint);max-width:78ch;line-height:1.6;}
.footer__copy{font-size:.75rem;color:var(--on-ink-faint);}
.footer__links{display:flex;flex-wrap:wrap;gap:.4rem 1.5rem;}
.footer__links a{font-size:.82rem;color:var(--on-ink-muted);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--ink-line);transition:color .2s,text-decoration-color .2s;}
.footer__links a:hover{color:var(--on-ink);text-decoration-color:var(--signal);}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:980px){
  .nav__links{display:none;}
  .nav__toggle{display:flex;}
  .hero__stats{grid-template-columns:repeat(2,1fr);row-gap:1.5rem;}
  .stat--scroll{display:none;}
  .cards{grid-template-columns:repeat(2,1fr);}
  .why__grid{grid-template-columns:repeat(2,1fr);}
  .process__list{grid-template-columns:repeat(2,1fr);gap:2rem;}
  .contact__wrap{grid-template-columns:1fr;}
  .contact__info{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .brand__logo{height:40px;}
  .nav__cta{display:none;}
  .cards{grid-template-columns:1fr;}
  .workshop-cards{grid-template-columns:1fr;}
  .why__grid{grid-template-columns:1fr;}
  .process__list{grid-template-columns:1fr;}
  .contact__info{grid-template-columns:1fr;}
  .chain__list li{flex-direction:column;gap:.5rem;}
  .hero__cta{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;justify-content:center;}
  .hero__cta .btn{width:auto;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  [data-reveal],[data-reveal-group] > *{transition:none;opacity:1;transform:none;}
  .strip__track{animation:none;}
  .stat__scroll{animation:none;}
}