/* =========================================================
   GROSAG VENTURES — DESIGN TOKENS
   Concept: a "blueprint for a business" — quiet paper + ink
   surface, warm brass accent, a recurring node/line motif
   that stands in for the brand's real idea: five functions
   wired into one system.
   ========================================================= */
:root{
  --paper:      #FBF9F2;
  --paper-alt:  #F3EFDF;
  --ink:        #12291A;
  --ink-soft:   #33503B;
  --steel:      #159A63;
  --brass:      #F4C21D;
  --brass-dark: #B4890A;
  --sage:       #1EAA68;
  --sage-bg:    #0F2416;
  --grey:       #5C6E61;
  --line:       rgba(18,41,26,0.14);
  --line-soft:  rgba(18,41,26,0.08);
  --paper-line: rgba(251,249,242,0.16);

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Space Mono', 'Courier New', monospace;

  --container: 1180px;
  --radius: 2px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; }

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

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:500;
  color:var(--ink);
  margin:0;
  letter-spacing:-0.01em;
}
h2{ font-size:clamp(2rem, 3.4vw, 2.85rem); line-height:1.12; }
h3{ font-size:1.25rem; line-height:1.3; }

p{ margin:0; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--brass);
  outline-offset:3px;
}

.eyebrow, .module-tag{
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--steel);
  margin:0 0 18px;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.leaf-mark{
  width:13px; height:13px;
  fill:var(--sage);
  transform:rotate(-8deg);
}
.module-tag-light{ color:#8FC7A2; }

/* ============ background grid texture ============ */
.grid-overlay{
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  mask-image:linear-gradient(to bottom, black, transparent 92%);
}

/* ============ buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--radius);
  font-weight:600;
  font-size:0.94rem;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn-primary{ background:var(--brass); color:var(--ink); box-shadow:0 0 0 rgba(244,194,29,0); }
.btn-primary:hover{ background:var(--brass-dark); transform:translateY(-2px); box-shadow:0 10px 24px rgba(180,137,10,0.28); }
.btn-primary:active{ transform:translateY(0); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink); transform:translateY(-2px); background:rgba(18,41,26,0.03); }
.btn-outline{ background:transparent; color:var(--paper); border-color:var(--paper-line); margin-top:36px; }
.btn-outline:hover{ background:var(--paper); color:var(--ink); }
.btn-block{ width:100%; }

/* =========================================================
   NAV
   ========================================================= */
.site-nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(238,241,236,0);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease), border-color .3s var(--ease);
}
.site-nav.is-scrolled{
  background:rgba(238,241,236,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:18px 32px;
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{ display:flex; align-items:center; gap:10px; margin-right:auto; }
.brand-mark{ width:90px; height:90px; border-radius:50%; overflow:hidden; flex-shrink:0; box-shadow:0 0 0 1px var(--line); transition:box-shadow .25s var(--ease), transform .25s var(--ease); }
.brand:hover .brand-mark{ box-shadow:0 0 0 1px var(--brass), 0 4px 14px rgba(180,137,10,0.22); transform:scale(1.04); }
.brand-mark img{ width:100%; height:100%; object-fit:cover; display:block; }
.brand-word{ font-family:var(--font-display); font-size:1.08rem; }
.brand-word .bw-1{ color:var(--steel); font-weight:600; }
.brand-word .bw-2{ color:var(--ink); font-style:italic; }

.nav-links{ display:flex; gap:26px; }
.nav-links a{
  font-size:0.9rem; font-weight:500; color:var(--ink-soft);
  position:relative; padding:4px 0;
  transition:color .2s;
}
.nav-links a::after{
  content:''; position:absolute; left:0; right:100%; bottom:-2px; height:1px;
  background:var(--brass); transition:right .25s var(--ease);
}
.nav-links a:hover, .nav-links a.active{ color:var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after{ right:0; }

.nav-cta{ padding:10px 20px; font-size:0.86rem; }
.nav-toggle{ display:none; background:none; border:none; padding:6px; cursor:pointer; }
.nav-toggle span{ display:block; width:22px; height:2px; background:var(--ink); margin:5px 0; transition:transform .25s, opacity .25s; }

/* side rail */
.rail{
  position:fixed; right:22px; top:50%; transform:translateY(-50%);
  z-index:90; display:flex; flex-direction:column; gap:14px;
}
.rail a{
  width:8px; height:8px; border-radius:50%;
  background:var(--line); position:relative;
  transition:background .25s, transform .25s;
}
.rail a::before{
  content:attr(data-label);
  position:absolute; right:18px; top:50%; transform:translateY(-50%);
  font-family:var(--font-mono); font-size:0.66rem; letter-spacing:.06em;
  color:var(--ink-soft); white-space:nowrap;
  opacity:0; pointer-events:none; transition:opacity .2s;
}
.rail a:hover::before{ opacity:1; }
.rail a.active{ background:var(--brass); transform:scale(1.5); }
@media (max-width:1100px){ .rail{ display:none; } }

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;
  padding:168px 0 96px;
  overflow:hidden;
}
.hero-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:40px;
  align-items:center;
  position:relative;
}
.hero h1{
  font-size:clamp(2.3rem, 4.6vw, 3.6rem);
  line-height:1.08;
  margin-bottom:22px;
}
.ink-highlight{ color:var(--brass-dark); font-style:italic; }
.hero-lead{
  font-size:1.08rem; color:var(--ink-soft); max-width:46ch; margin-bottom:34px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:56px; }

.hero-stats{ display:flex; gap:40px; border-top:1px solid var(--line); padding-top:26px; }
.hero-stats .num{
  display:block; font-family:var(--font-display); font-size:1.9rem; color:var(--ink);
}
.hero-stats .lbl{
  display:block; font-family:var(--font-mono); font-size:0.68rem; letter-spacing:.05em;
  color:var(--grey); text-transform:uppercase; margin-top:4px; line-height:1.3;
}

.hero-diagram{ position:relative; }
#ecoSvg{ width:100%; height:auto; overflow:visible; }

.eco-lines line{
  stroke:var(--steel); stroke-width:1.5; opacity:.45;
  stroke-dasharray:280; stroke-dashoffset:280;
  animation:drawLine 1s var(--ease) forwards;
}
.eco-lines line:nth-child(1){ animation-delay:.15s; }
.eco-lines line:nth-child(2){ animation-delay:.28s; }
.eco-lines line:nth-child(3){ animation-delay:.41s; }
.eco-lines line:nth-child(4){ animation-delay:.54s; }
.eco-lines line:nth-child(5){ animation-delay:.67s; }
@keyframes drawLine{ to{ stroke-dashoffset:0; } }

.eco-pulse circle{
  fill:none; stroke:var(--brass); stroke-width:1;
  opacity:0; transform-origin:260px 260px;
  animation:pulseRing 3.6s ease-out .9s infinite;
}
@keyframes pulseRing{
  0%{ opacity:.55; transform:scale(1); }
  100%{ opacity:0; transform:scale(1.55); }
}
@media (prefers-reduced-motion: reduce){
  .eco-pulse circle{ animation:none; opacity:0; }
}

.eco-hub circle{ fill:var(--ink); }
.eco-hub-ring{
  fill:none; stroke:var(--brass); stroke-width:2; opacity:.9;
}
.eco-hub-main{
  fill:var(--paper); font-family:var(--font-display); font-weight:600; font-size:18px;
  text-anchor:middle; letter-spacing:.01em;
}
.eco-hub-sub{
  fill:var(--brass); font-family:var(--font-mono); font-size:10px; text-anchor:middle; letter-spacing:.14em;
}

.eco-node{
  opacity:0; transform-origin:center;
  animation:popIn .5s var(--ease) forwards;
  cursor:default;
}
.eco-node[data-node="tech"]{ animation-delay:.35s; }
.eco-node[data-node="sales"]{ animation-delay:.48s; }
.eco-node[data-node="marketing"]{ animation-delay:.61s; }
.eco-node[data-node="finance"]{ animation-delay:.74s; }
.eco-node[data-node="funding"]{ animation-delay:.87s; }
@keyframes popIn{ from{ opacity:0; transform:scale(.7); } to{ opacity:1; transform:scale(1); } }

.eco-node rect{
  fill:var(--paper); stroke:var(--steel); stroke-width:1.4;
  transition:fill .25s var(--ease), stroke .25s var(--ease), transform .25s var(--ease);
  transform-box:fill-box; transform-origin:center;
}
.eco-node text{
  fill:var(--ink); font-family:var(--font-mono); font-weight:700; font-size:12.5px;
  text-anchor:middle; letter-spacing:.06em;
  pointer-events:none;
}
.eco-node:hover rect{ fill:var(--brass); stroke:var(--brass-dark); transform:scale(1.05); }

.diagram-caption{
  text-align:center; font-family:var(--font-mono); font-size:0.72rem;
  color:var(--grey); letter-spacing:.04em; margin-top:14px;
}

/* =========================================================
   DARK / INTRO BAND
   ========================================================= */
.band-dark{
  background:var(--ink); color:var(--paper); padding:88px 0;
}
.band-inner{ max-width:820px; margin:0 auto; text-align:center; }
.band-quote{
  font-family:var(--font-display); font-style:italic; font-weight:400;
  font-size:clamp(1.3rem, 2.4vw, 1.7rem); line-height:1.45; margin-bottom:26px;
}
.band-sub{ color:#B9C9BC; font-size:1rem; line-height:1.7; }

/* =========================================================
   MODULES (services)
   ========================================================= */
.module{ padding:104px 0; position:relative; }
.module-light{ background:var(--paper); }
.module-alt{ background:var(--paper-alt); }
.module-grid{
  display:grid; grid-template-columns:0.85fr 1.15fr; gap:64px; align-items:start;
}
.module-grid-rev .module-body{ order:1; }
.module-grid-rev .module-head{ order:2; }

.module-head h2{ margin-bottom:20px; font-size:clamp(1.7rem,2.6vw,2.3rem); }
.module-intro{ color:var(--ink-soft); font-size:1.02rem; margin-bottom:20px; max-width:46ch; }
.module-close{
  font-family:var(--font-display); font-style:italic; color:var(--brass-dark); font-size:1.05rem;
}

.chip-list{ display:flex; flex-wrap:wrap; gap:10px; }
.chip-list li{
  font-family:var(--font-mono); font-size:0.78rem; letter-spacing:.01em;
  padding:10px 14px; border:1px solid var(--line); border-radius:var(--radius);
  color:var(--ink-soft); background:rgba(255,255,255,0.35);
  transition:border-color .2s, color .2s, background .2s;
}
.chip-list li:hover{ border-color:var(--steel); color:var(--ink); background:#fff; }
.chip-list-light li{
  border-color:var(--paper-line); color:#DCE6DF; background:rgba(255,255,255,0.04);
}
.chip-list-light li:hover{ border-color:var(--brass); color:var(--paper); }

/* callout: market acceptance report */
.callout{
  margin-top:64px;
  background:var(--ink); color:var(--paper);
  padding:48px; border-radius:var(--radius);
  position:relative; overflow:hidden;
}
.callout::before{
  content:''; position:absolute; top:-40%; right:-10%; width:340px; height:340px;
  border:1px solid rgba(238,241,236,0.12); border-radius:50%;
}
.callout::after{
  content:''; position:absolute; top:-30%; right:0%; width:240px; height:240px;
  border:1px solid rgba(201,138,59,0.25); border-radius:50%;
}
.callout-tag{
  font-family:var(--font-mono); font-size:0.7rem; letter-spacing:.14em;
  color:var(--brass); margin-bottom:14px;
}
.callout h3{ color:var(--paper); font-size:1.6rem; margin-bottom:16px; }
.callout p{ color:#C3D0C7; max-width:60ch; margin-bottom:26px; line-height:1.7; }
.tick-list{ display:grid; grid-template-columns:repeat(3,1fr); gap:12px 24px; position:relative; }
.tick-list li{
  font-size:0.9rem; color:var(--paper); padding-left:20px; position:relative;
}
.tick-list li::before{
  content:''; position:absolute; left:0; top:8px; width:8px; height:1px; background:var(--brass);
}

/* =========================================================
   BRANDS
   ========================================================= */
.brands{ position:relative; padding:110px 0; background:var(--paper); }
.section-lead{ color:var(--ink-soft); max-width:62ch; margin-top:18px; font-size:1.05rem; }
.section-lead.light{ color:#C7D4CB; }

.brand-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:24px;
  margin:52px 0 0;
}
.brand-card{
  border:1px solid var(--line); padding:32px 26px; border-radius:var(--radius);
  background:rgba(255,255,255,0.4);
  transition:transform .25s var(--ease), border-color .25s;
}
.brand-card:hover{ transform:translateY(-6px); border-color:var(--steel); }
.brand-card-index{
  font-family:var(--font-mono); font-size:0.75rem; color:var(--brass-dark);
  display:block; margin-bottom:18px;
}
.brand-card h3{ margin-bottom:10px; }
.brand-card p{ color:var(--ink-soft); font-size:0.94rem; }

/* =========================================================
   SOCIAL BAND
   ========================================================= */
.band-social{
  background:var(--sage-bg); color:var(--paper); padding:100px 0;
}
.band-social h2{ color:var(--paper); margin:14px 0 0; max-width:16ch; }
.band-social .chip-list{ margin-top:36px; }

/* =========================================================
   WHY GROSAG
   ========================================================= */
.why{ padding:110px 0; background:var(--paper-alt); }
.why-grid{
  display:grid; grid-template-columns:repeat(5,1fr); gap:1px;
  margin-top:56px; background:var(--line);
  border:1px solid var(--line);
}
.why-card{ background:var(--paper-alt); padding:32px 22px; transition:background .25s var(--ease); position:relative; z-index:1; }
.why-card:hover{ background:#fff; }
.why-node{
  font-family:var(--font-mono); font-size:0.78rem; color:var(--paper);
  background:var(--steel); width:30px; height:30px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; margin-bottom:18px;
  transition:transform .25s var(--ease);
}
.why-card:hover .why-node{ transform:scale(1.1) rotate(-6deg); }
.why-card h3{ font-size:1.05rem; margin-bottom:10px; }
.why-card p{ font-size:0.88rem; color:var(--ink-soft); line-height:1.55; }

/* =========================================================
   CONTACT
   ========================================================= */
.contact{
  position:relative; background:var(--ink); color:var(--paper); padding:120px 0;
  overflow:hidden;
}
.contact .grid-overlay{
  background-image:
    linear-gradient(var(--paper-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper-line) 1px, transparent 1px);
}
.contact-inner{
  display:grid; grid-template-columns:0.9fr 1.1fr; gap:64px; position:relative;
}
.contact h2{ color:var(--paper); font-size:clamp(2rem,3.2vw,2.6rem); margin-bottom:20px; }
.contact-note{
  margin-top:30px; font-family:var(--font-mono); font-size:0.82rem;
  color:var(--brass); letter-spacing:.02em; line-height:1.7;
}

.contact-details{
  display:flex; gap:28px; flex-wrap:wrap; margin:34px 0 26px;
  padding-top:26px; border-top:1px solid var(--paper-line);
}
.contact-detail{ display:flex; flex-direction:column; gap:5px; }
.cd-label{
  font-family:var(--font-mono); font-size:0.68rem; letter-spacing:.1em; text-transform:uppercase;
  color:#9FB3A5;
}
.cd-value{
  font-family:var(--font-display); font-size:1.15rem; color:var(--paper);
  transition:color .2s;
}
.contact-detail:hover .cd-value{ color:var(--brass); }

.btn-whatsapp{
  background:#25D366; color:#0B1D11; margin-bottom:10px;
}
.btn-whatsapp:hover{ background:#1FBD5A; transform:translateY(-2px); }
.wa-icon{ width:18px; height:18px; fill:#0B1D11; }

.contact-form{
  background:rgba(238,241,236,0.04);
  border:1px solid var(--paper-line);
  border-radius:var(--radius);
  padding:40px;
}
.form-row{ margin-bottom:20px; display:flex; flex-direction:column; gap:8px; }
.form-row label{
  font-family:var(--font-mono); font-size:0.72rem; letter-spacing:.06em; text-transform:uppercase;
  color:#9FB3A5;
}
.form-row input, .form-row select, .form-row textarea{
  background:rgba(238,241,236,0.06);
  border:1px solid var(--paper-line);
  border-radius:var(--radius);
  padding:13px 14px;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:0.95rem;
  resize:vertical;
  transition:border-color .2s, background .2s;
}
.form-row input::placeholder, .form-row textarea::placeholder{ color:#6F8074; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{
  border-color:var(--brass); background:rgba(238,241,236,0.09); outline:none;
}
.form-row select{ appearance:none; cursor:pointer; }
.field-error{
  font-family:var(--font-mono); font-size:0.7rem; color:#E28B7A; min-height:14px; display:block;
}
.form-note{
  margin-top:16px; text-align:center; font-size:0.82rem; color:#9FB3A5;
}
.form-note.is-success{ color:#8FD1A5; font-weight:600; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{ background:#0B1D11; color:#AFC2B4; padding:64px 0 0; }
.footer-inner{
  display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap;
  padding-bottom:56px; border-bottom:1px solid rgba(238,241,236,0.08);
}
.footer-brand{ display:flex; gap:12px; align-items:flex-start; }
.footer-brand .brand-mark{ box-shadow:0 0 0 1px rgba(251,249,242,0.18); }
.footer-name{ font-family:var(--font-display); color:var(--paper); font-size:1.15rem; }
.footer-tag{ font-size:0.85rem; margin-top:4px; color:#82977F; }

.footer-cols{ display:flex; gap:64px; flex-wrap:wrap; }
.footer-col{ display:flex; flex-direction:column; gap:12px; min-width:120px; }
.footer-heading{
  font-family:var(--font-mono); font-size:0.7rem; letter-spacing:.1em; text-transform:uppercase;
  color:#6F8074; margin-bottom:4px;
}
.footer-col a{ font-size:0.9rem; color:#AECBB4; transition:color .2s; }
.footer-col a:hover{ color:var(--brass); }
.footer-static{ font-size:0.85rem; color:#6F8074; }

.footer-bottom{
  padding:22px 32px; font-size:0.8rem; color:#6F8074; text-align:center;
}

/* =========================================================
   FLOATING WHATSAPP BUTTON
   ========================================================= */
.fab-whatsapp{
  position:fixed; right:24px; bottom:24px; z-index:95;
  width:56px; height:56px; border-radius:50%;
  background:#25D366; display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 24px rgba(18,41,26,0.28);
  transition:transform .25s var(--ease), box-shadow .25s var(--ease);
}
.fab-whatsapp svg{ width:28px; height:28px; fill:#fff; }
.fab-whatsapp:hover{ transform:translateY(-3px) scale(1.05); box-shadow:0 12px 28px rgba(18,41,26,0.34); }
@media (max-width:760px){
  .fab-whatsapp{ right:16px; bottom:16px; width:50px; height:50px; }
  .fab-whatsapp svg{ width:24px; height:24px; }
}

/* =========================================================
   SHARED MOTION / GLOW UTILITIES
   (used by tech.html's console + code-editor signature blocks;
   kept here so the tokens/easing stay centralized)
   ========================================================= */
.blink-cursor{
  display:inline-block; width:8px; height:1em; margin-left:2px;
  background:var(--sage); vertical-align:-2px;
  animation:blinkCursor 1s step-end infinite;
}
@keyframes blinkCursor{ 0%,100%{ opacity:1; } 50%{ opacity:0; } }

.glow-ring{ box-shadow:0 0 0 1px rgba(21,154,99,0.18), 0 0 24px rgba(21,154,99,0.10); }

@media (prefers-reduced-motion: reduce){
  .blink-cursor{ animation:none; opacity:1; }
}

/* =========================================================
   REVEAL ON SCROLL
   ========================================================= */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible{ opacity:1; transform:translateY(0); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:980px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-diagram{ order:-1; max-width:380px; margin:0 auto 30px; }
  .module-grid{ grid-template-columns:1fr; gap:36px; }
  .module-grid-rev .module-body{ order:2; }
  .module-grid-rev .module-head{ order:1; }
  .tick-list{ grid-template-columns:repeat(2,1fr); }
  .brand-grid{ grid-template-columns:1fr; }
  .why-grid{ grid-template-columns:repeat(2,1fr); }
  .contact-inner{ grid-template-columns:1fr; }
}

@media (max-width:760px){
  .nav-links{
    position:fixed; top:64px; left:0; right:0; bottom:0;
    background:var(--paper); flex-direction:column; padding:32px;
    transform:translateX(100%); transition:transform .3s var(--ease);
    gap:22px;
  }
  .nav-links.is-open{ transform:translateX(0); }
  .nav-cta{ display:none; }
  .nav-toggle{ display:block; }
  .hero{ padding-top:120px; }
  .hero-stats{ gap:26px; flex-wrap:wrap; }
  .callout{ padding:30px; }
  .tick-list{ grid-template-columns:1fr 1fr; }
  .why-grid{ grid-template-columns:1fr; }
  .contact-form{ padding:26px; }
  .footer-inner{ flex-direction:column; gap:36px; }
}