/* ==========================================================================
   GARGI ENTERPRISES — DESIGN SYSTEM
   Industrial engineering meets applied technology.
   Palette: deep instrument-panel navy, hot copper (power), signal cyan (data)
   Type: Barlow Condensed (display/technical headings), Inter (body),
         JetBrains Mono (specs, ratings, data)
   ========================================================================== */

:root{
  /* --- Color tokens --- */
  --bg:            #0A121C;   /* deep instrument navy */
  --bg-alt:        #0E1826;
  --surface:       #121F2E;
  --surface-2:     #17283A;
  --surface-light: #F3F5F7;   /* light-mode content panels */
  --line:          #24384B;
  --line-soft:     rgba(255,255,255,0.08);
  --steel:         #7C8FA0;
  --steel-dim:     #566878;
  --text:          #ECEFF2;
  --text-dim:      #B4C0CB;
  --text-mute:     #7E8D9B;
  --ink:           #0A121C;   /* text on light panels */
  --ink-dim:       #3C4A57;

  --copper:        #C97E3A;   /* power / primary accent */
  --copper-bright: #E0954C;
  --copper-dim:    #7A4E24;
  --cyan:          #3FB6D6;   /* technology / data accent */
  --cyan-bright:   #5ED1EE;
  --amber-warn:    #D6A23F;
  --success:       #4E9E6C;

  --grid-line:     rgba(124,143,160,0.10);

  /* --- Type --- */
  --f-display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --f-body:    "Inter", -apple-system, "Segoe UI", sans-serif;
  --f-mono:    "JetBrains Mono", "Consolas", monospace;

  /* --- Scale --- */
  --radius-s: 3px;
  --radius-m: 6px;
  --shadow-1: 0 8px 30px rgba(0,0,0,0.35);
  --shadow-2: 0 20px 60px rgba(0,0,0,0.45);

  --container: 1220px;
  --gutter: 24px;
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
button{font:inherit;cursor:pointer;}
input,select,textarea{font:inherit;}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;letter-spacing:0.01em;line-height:1.08;color:var(--text);}
:focus-visible{outline:2px solid var(--cyan-bright);outline-offset:3px;}

/* --- Utility layout --- */
.wrap{max-width:var(--container);margin:0 auto;padding:0 var(--gutter);}
.section{padding:96px 0;position:relative;}
.section-tight{padding:64px 0;}
@media (max-width:768px){
  .section{padding:64px 0;}
  .section-tight{padding:44px 0;}
}
.section-alt{background:var(--bg-alt);}
.section-light{background:var(--surface-light);color:var(--ink);}
.section-light h1,.section-light h2,.section-light h3,.section-light h4{color:var(--ink);}
.section-light .sub{color:var(--ink-dim);}

.grain-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,0.9), rgba(0,0,0,0.15));
}

.eyebrow{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--cyan-bright);
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--copper);}

h2.h-lg{font-size:clamp(28px,4vw,46px);}
h3.h-md{font-size:clamp(22px,2.6vw,30px);}
p.lead{font-size:18px;color:var(--text-dim);max-width:640px;}
.section-light p.lead{color:var(--ink-dim);}

/* --- Buttons --- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  font-family:var(--f-body);font-weight:600;font-size:14.5px;
  border-radius:var(--radius-s);
  border:1px solid transparent;
  transition:transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);}
.btn-copper{background:var(--copper);color:#0A121C;}
.btn-copper:hover{background:var(--copper-bright);}
.btn-outline{border-color:var(--line-soft);color:var(--text);background:transparent;}
.btn-outline:hover{border-color:var(--cyan-bright);color:var(--cyan-bright);}
.btn-ghost{color:var(--cyan-bright);padding:14px 4px;}
.btn-ghost::after{content:"→";margin-left:6px;transition:transform .18s ease;}
.btn-ghost:hover::after{transform:translateX(4px);}
.btn-block{width:100%;}
.btn-sm{padding:10px 18px;font-size:13px;}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* --- Header / Nav --- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(10,18,28,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.nav-row{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;flex-shrink:0;background:#F3F5F7;border-radius:6px;padding:7px 14px;}
.brand-logo-full{height:34px;width:auto;display:block;}
.brand-logo-mark{height:32px;width:auto;display:none;}
@media (max-width:520px){
  .brand-logo-full{display:none;}
  .brand-logo-mark{display:block;}
}
.nav-links{display:flex;align-items:center;gap:22px;flex-wrap:nowrap;}
.nav-links a{font-size:14px;color:var(--text-dim);position:relative;padding:6px 0;white-space:nowrap;}
.nav-links a:hover, .nav-links a.active{color:var(--text);}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--copper);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;background:none;border:1px solid var(--line-soft);color:var(--text);width:42px;height:42px;border-radius:var(--radius-s);align-items:center;justify-content:center;}

@media (max-width:1180px){
  .nav-links{
    position:fixed;inset:76px 0 0 0;background:var(--bg);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:12px var(--gutter) 24px;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .2s ease, transform .2s ease;
    border-top:1px solid var(--line-soft);
    overflow-y:auto;
  }
  .nav-links.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-links a{width:100%;padding:14px 0;border-bottom:1px solid var(--line-soft);}
  .nav-actions .btn-outline{display:none;}
  .nav-toggle{display:flex;}
}

/* --- Hero --- */
.hero{position:relative;padding:88px 0 96px;overflow:hidden;background:radial-gradient(120% 90% at 78% 10%, #14273A 0%, var(--bg) 62%);}
.hero-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:48px;align-items:center;}
@media (max-width:980px){.hero-grid{grid-template-columns:1fr;}}
.hero h1{font-size:clamp(36px,5.4vw,62px);margin-bottom:20px;}
.hero h1 .accent{color:var(--copper-bright);}
.hero p.lead{margin-bottom:32px;}
.hero-badges{display:flex;gap:22px;margin-top:40px;flex-wrap:wrap;}
.hero-badge{font-family:var(--f-mono);font-size:12px;color:var(--steel);display:flex;align-items:center;gap:8px;}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);}

.dg-visual{position:relative;aspect-ratio:1/1;max-width:520px;margin:0 auto;perspective:1000px;}
.dg-visual::before{
  content:"";position:absolute;inset:6%;border-radius:50%;
  background:radial-gradient(circle at 55% 45%, rgba(201,126,58,0.16), rgba(63,182,214,0.10) 46%, transparent 72%);
  filter:blur(6px);pointer-events:none;
}
.dg-visual-inner{width:100%;height:100%;transition:transform .25s ease-out;transform-style:preserve-3d;will-change:transform;}
.dg-visual svg{width:100%;height:100%;filter:drop-shadow(0 18px 34px rgba(0,0,0,0.55));}
.hud-ring{transition:opacity .3s ease;}
@media (prefers-reduced-motion:no-preference){
  .flow-path{stroke-dasharray:8 7;animation:flowmove 2.4s linear infinite;}
  .flow-path-2{stroke-dasharray:4 10;animation:flowmove 3.2s linear infinite reverse;}
  .pulse-node{animation:pulseglow 2.6s ease-in-out infinite;}
  .rotor{animation:rotorspin 6s linear infinite;transform-origin:center;}
  .hud-ring{animation:ringspin 40s linear infinite;transform-origin:260px 260px;}
  .hud-ring-2{animation:ringspin 60s linear infinite reverse;transform-origin:260px 260px;}
  .particle{animation:particledrift 5s ease-in-out infinite;}
}
@keyframes flowmove{to{stroke-dashoffset:-60;}}
@keyframes pulseglow{0%,100%{opacity:.55;}50%{opacity:1;}}
@keyframes rotorspin{to{transform:rotate(360deg);}}
@keyframes ringspin{to{transform:rotate(360deg);}}
@keyframes particledrift{0%,100%{opacity:.2;transform:translateY(0);}50%{opacity:.9;transform:translateY(-6px);}}

/* --- Sticky mobile CTA --- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:250;
  display:none;
  background:var(--surface);border-top:1px solid var(--line-soft);
  padding:10px var(--gutter);
  gap:10px;
}
.sticky-cta a{flex:1;text-align:center;}
@media (max-width:760px){.sticky-cta{display:flex;}body{padding-bottom:68px;}}

/* --- Cards --- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
@media (max-width:980px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--surface);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-m);
  padding:30px 26px;
  transition:border-color .2s ease, transform .2s ease, background .2s ease;
}
.card:hover{border-color:var(--copper-dim);transform:translateY(-4px);}
.card .idx{font-family:var(--f-mono);font-size:12px;color:var(--copper);letter-spacing:.08em;margin-bottom:14px;display:block;}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:var(--text-dim);font-size:14.5px;}
.card a.card-link{display:inline-block;margin-top:16px;font-size:13.5px;color:var(--cyan-bright);}

.card-light{background:#fff;border:1px solid #E3E7EB;}
.card-light h3{color:var(--ink);}
.card-light p{color:var(--ink-dim);}

.icon-box{
  width:46px;height:46px;border-radius:var(--radius-s);
  background:var(--surface-2);border:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
  color:var(--copper-bright);
}

/* --- Process rail --- */
.process-rail{display:flex;gap:0;position:relative;flex-wrap:wrap;}
.process-step{flex:1;min-width:150px;position:relative;padding:0 18px 0 0;}
.process-step .num{font-family:var(--f-mono);color:var(--copper);font-size:13px;display:block;margin-bottom:10px;}
.process-step h4{font-size:16.5px;margin-bottom:8px;}
.process-step p{font-size:13.5px;color:var(--text-dim);}
.process-step::after{
  content:"";position:absolute;top:8px;right:-2px;width:100%;height:1px;
  background:linear-gradient(90deg,var(--line-soft),transparent);
}
.process-step:last-child::after{display:none;}
@media (max-width:900px){
  .process-rail{flex-direction:column;gap:26px;}
  .process-step::after{display:none;}
}

/* --- Stat / trust strip --- */
.trust-strip{display:flex;flex-wrap:wrap;gap:0;border:1px solid var(--line-soft);border-radius:var(--radius-m);overflow:hidden;}
.trust-item{flex:1;min-width:200px;padding:22px 24px;border-right:1px solid var(--line-soft);}
.trust-item:last-child{border-right:none;}
.trust-item .label{font-family:var(--f-mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--steel);display:block;margin-bottom:6px;}
.trust-item .val{font-size:15px;color:var(--text-dim);}
.placeholder-tag{
  display:inline-block;font-family:var(--f-mono);font-size:10.5px;color:var(--amber-warn);
  border:1px dashed var(--amber-warn);border-radius:3px;padding:2px 6px;margin-left:6px;
}

/* --- Table (specs / comparisons) --- */
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px;}
.spec-table th,.spec-table td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line-soft);}
.spec-table th{font-family:var(--f-mono);font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--steel);}
.spec-table td{color:var(--text-dim);}

/* --- Gallery placeholders --- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media (max-width:900px){.gallery-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.gallery-grid{grid-template-columns:1fr;}}
.ph-tile{
  aspect-ratio:4/3;border-radius:var(--radius-m);
  background:repeating-linear-gradient(135deg, var(--surface) 0 12px, var(--surface-2) 12px 24px);
  border:1px dashed var(--line);
  display:flex;align-items:center;justify-content:center;text-align:center;padding:16px;
  color:var(--steel);font-family:var(--f-mono);font-size:12.5px;
}

/* --- Breadcrumb --- */
.breadcrumb{font-family:var(--f-mono);font-size:12px;color:var(--steel);padding:20px 0;}
.breadcrumb a{color:var(--steel);}
.breadcrumb a:hover{color:var(--cyan-bright);}
.breadcrumb span{margin:0 8px;}

/* --- Page hero (interior pages) --- */
.page-hero{padding:36px 0 56px;border-bottom:1px solid var(--line-soft);background:linear-gradient(180deg, var(--bg-alt), var(--bg));}
.page-hero .eyebrow{margin-bottom:14px;}
.page-hero h1{font-size:clamp(30px,4.2vw,48px);max-width:820px;}
.page-hero p.lead{margin-top:16px;}

/* --- Form --- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13px;color:var(--text-dim);font-family:var(--f-mono);letter-spacing:.02em;}
.field input,.field select,.field textarea{
  background:var(--surface-2);border:1px solid var(--line-soft);color:var(--text);
  padding:13px 14px;border-radius:var(--radius-s);
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan-bright);}
.field textarea{resize:vertical;min-height:110px;}
.form-note{font-size:13px;color:var(--steel);margin-top:14px;}

/* --- FAQ --- */
.faq-item{border-bottom:1px solid var(--line-soft);padding:20px 0;}
.faq-item summary{cursor:pointer;font-family:var(--f-display);font-size:18px;list-style:none;display:flex;justify-content:space-between;align-items:center;color:var(--text);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-family:var(--f-mono);color:var(--copper);font-size:20px;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin-top:12px;color:var(--text-dim);font-size:14.5px;max-width:720px;}

/* --- Footer --- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line-soft);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:48px;}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h5{font-family:var(--f-mono);font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--steel);margin-bottom:16px;}
.footer-grid a,.footer-grid li{font-size:14px;color:var(--text-dim);}
.footer-grid li{margin-bottom:10px;}
.footer-grid a:hover{color:var(--cyan-bright);}
.footer-bottom{border-top:1px solid var(--line-soft);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12.5px;color:var(--steel);}

/* --- CTA band --- */
.cta-band{
  background:linear-gradient(120deg, var(--surface-2), var(--bg-alt));
  border:1px solid var(--line-soft);border-radius:var(--radius-m);
  padding:56px;display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(24px,3.2vw,34px);max-width:560px;}
.cta-band p{color:var(--text-dim);margin-top:10px;max-width:520px;}
@media (max-width:760px){.cta-band{padding:34px;}}

/* --- reveal on scroll --- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .flow-path,.pulse-node,.rotor{animation:none !important;}
}

/* --- 404 --- */
.error-page{min-height:60vh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;}
.error-page .code{font-family:var(--f-mono);font-size:14px;color:var(--copper);letter-spacing:.1em;margin-bottom:14px;}

/* --- misc --- */
.divider{height:1px;background:var(--line-soft);margin:56px 0;}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start;}
@media (max-width:860px){.two-col{grid-template-columns:1fr;gap:36px;}}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.tag{font-family:var(--f-mono);font-size:11.5px;color:var(--steel);border:1px solid var(--line-soft);border-radius:20px;padding:5px 12px;}