/* =========================================================================
   RABLUE TECHNOLOGIES — Design System (v2)
   Palette/type direction referenced from mastercam.com's public site:
   clean white ground, near-black type, a single bold red brand accent,
   generous whitespace, a confident geometric sans. No Mastercam logo,
   imagery or copy is reproduced — only the general colour/type direction.
   Variable names are kept from v1 to minimise rule churn; see comments
   for what each now represents.
   ========================================================================= */

:root{
  /* Color */
  --ink:        #FFFFFF;   /* base background — white */
  --surface:    #F6F6F7;   /* panel surface — light gray */
  --surface-2:  #EEEFF1;   /* elevated panel */
  --line:       #E4E5E8;   /* hairline / rule */
  --line-strong:#CBCED3;
  --text:       #2B2E33;   /* body base text */
  --text-dim:   #565B62;   /* secondary text */
  --text-faint: #868B92;   /* tertiary / captions */
  --blue:       #C8102E;   /* PRIMARY BRAND RED — CTAs, links */
  --blue-dim:   #9C0C22;   /* red hover/active */
  --brass:      #24303D;   /* SECONDARY accent — dark steel, labels/badges */
  --brass-dim:  #3E4C5C;
  --green:      #2E8B57;   /* status / verified */
  --red:        #C8102E;   /* alerts (aliased to brand red) */
  --white:      #101113;   /* "strongest" heading/foreground contrast (near-black on this light theme) */
  --true-white: #FFFFFF;   /* literal white — for text set on filled/dark elements */

  /* Type */
  --f-display: 'Inter', 'Arial', sans-serif;
  --f-body:    'Inter', -apple-system, sans-serif;
  --f-mono:    'IBM Plex Mono', 'Courier New', monospace;

  /* Layout */
  --maxw: 1240px;
  --gutter: 24px;
  --radius: 2px; /* engineering: near-zero radius */
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; }
}

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

img{ max-width:100%; display:block; }
a{ color:var(--blue); text-decoration:none; }
a:hover{ text-decoration:underline; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--blue); outline-offset:2px;
}

h1,h2,h3,h4{
  font-family:var(--f-display);
  font-weight:600;
  letter-spacing:-0.01em;
  line-height:1.15;
  margin:0 0 0.5em;
  color:var(--white);
}
h1{ font-size:clamp(2.1rem, 4.4vw, 3.6rem); }
h2{ font-size:clamp(1.6rem, 2.8vw, 2.3rem); }
h3{ font-size:1.25rem; }
p{ margin:0 0 1em; color:var(--text-dim); }
.lede{ font-size:1.15rem; color:var(--text); }

.mono{ font-family:var(--f-mono); }
.eyebrow{
  font-family:var(--f-mono);
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--brass);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{ content:''; width:14px; height:1px; background:var(--brass); display:inline-block; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 var(--gutter); }
section{ padding:88px 0; border-bottom:1px solid var(--line); }
section.tight{ padding:56px 0; }
section.no-border{ border-bottom:none; }
.bg-surface{ background:var(--surface); }

/* Datum corner ticks — engineering drawing motif, used sparingly on hero/panels */
.datum{ position:relative; }
.datum::before,.datum::after{
  content:''; position:absolute; width:16px; height:16px;
  border:1px solid var(--line-strong); pointer-events:none;
}
.datum::before{ top:-1px; left:-1px; border-right:none; border-bottom:none; }
.datum::after{ bottom:-1px; right:-1px; border-left:none; border-top:none; }

/* ---------- Header ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{ display:flex; align-items:center; justify-content:space-between; height:76px; }
.brand{ display:flex; align-items:center; gap:12px; flex:none; }
.brand-mark{
  width:36px; height:36px; flex:none;
  background:var(--blue); color:var(--true-white);
  font-family:var(--f-display); font-weight:800; font-size:1rem;
  border-radius:6px; display:flex; align-items:center; justify-content:center;
  letter-spacing:0;
}
.brand-text{ display:flex; flex-direction:column; line-height:1.25; white-space:nowrap; }
.brand-name{ font-family:var(--f-display); font-weight:700; font-size:0.96rem; color:var(--white); letter-spacing:-0.01em; white-space:nowrap; }
.brand-tag{ font-family:var(--f-mono); font-size:0.62rem; font-weight:500; letter-spacing:0.05em; text-transform:uppercase; color:var(--text-faint); margin-top:2px; white-space:nowrap; }
nav.primary{ display:flex; gap:20px; align-items:center; height:100%; flex-wrap:nowrap; }
nav.primary a{
  position:relative; display:flex; align-items:center; height:100%;
  color:var(--text-dim); font-size:0.83rem; font-weight:600; letter-spacing:0.01em;
  white-space:nowrap;
}
nav.primary a::after{
  content:''; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--blue); transform:scaleX(0); transform-origin:left;
  transition:transform .18s ease;
}
nav.primary a:hover{ color:var(--white); text-decoration:none; }
nav.primary a:hover::after{ transform:scaleX(1); }
nav.primary a.active{ color:var(--white); }
nav.primary a.active::after{ transform:scaleX(1); }
.nav-cta{ display:flex; gap:10px; align-items:center; }
.menu-toggle{ display:none; background:none; border:1px solid var(--line-strong); color:var(--text); width:40px; height:40px; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--f-body); font-weight:600; font-size:0.9rem;
  padding:12px 22px; border-radius:var(--radius); border:1px solid transparent;
  cursor:pointer; white-space:nowrap; transition:background .15s,border-color .15s,color .15s;
}
.btn-primary{ background:var(--blue); color:var(--true-white); }
.btn-primary:hover{ background:var(--blue-dim); text-decoration:none; }
.btn-brass{ background:var(--brass); color:var(--true-white); }
.btn-brass:hover{ background:var(--brass-dim); text-decoration:none; }
.btn-ghost{ background:transparent; color:var(--text); border-color:var(--line-strong); }
.btn-ghost:hover{ border-color:var(--text-dim); text-decoration:none; }
.btn-sm{ padding:9px 16px; font-size:0.82rem; }
.btn-block{ width:100%; }

/* ---------- Hero ---------- */
.hero{ padding:64px 0 80px; position:relative; overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center; }
.hero h1{ margin-bottom:20px; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
.hero-meta{ display:flex; gap:28px; margin-top:40px; flex-wrap:wrap; }
.hero-meta div{ font-family:var(--f-mono); font-size:0.75rem; color:var(--text-faint); }
.hero-meta strong{ display:block; color:var(--brass); font-size:1.1rem; font-family:var(--f-display); }

.trace-panel{
  background:var(--surface); border:1px solid var(--line);
  padding:20px; position:relative;
}
.trace-panel .cap{ font-family:var(--f-mono); font-size:0.68rem; color:var(--text-faint); display:flex; justify-content:space-between; margin-bottom:12px; letter-spacing:0.06em; }
.trace-panel svg{ width:100%; height:auto; display:block; }

/* toolpath trace animation */
.tp-path{
  stroke-dasharray:1400;
  stroke-dashoffset:1400;
  animation:draw 3.4s ease-in-out forwards;
}
.tp-path.delay1{ animation-delay:.3s; }
.tp-path.delay2{ animation-delay:.9s; }
@keyframes draw{ to{ stroke-dashoffset:0; } }
.tp-dot{ animation:blink 1.8s ease-in-out infinite; }
@keyframes blink{ 0%,100%{opacity:.3} 50%{opacity:1} }

/* ---------- Cards / Grids ---------- */
.grid{ display:grid; gap:20px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }

.card{
  background:var(--surface); border:1px solid var(--line);
  padding:26px; transition:border-color .15s, transform .15s;
}
.card:hover{ border-color:var(--line-strong); }
.card .idx{ font-family:var(--f-mono); font-size:0.7rem; color:var(--brass); margin-bottom:10px; display:block; }
.card h3{ margin-bottom:10px; }
.card p{ font-size:0.92rem; margin-bottom:14px; }
.card a.more{ font-size:0.85rem; font-weight:600; }

.module-card{ display:flex; flex-direction:column; height:100%; }
.module-card .tag{ display:inline-block; font-family:var(--f-mono); font-size:0.65rem; color:var(--text-faint); border:1px solid var(--line-strong); padding:3px 8px; margin-bottom:14px; width:fit-content; }

/* ---------- Section headers ---------- */
.section-head{ max-width:680px; margin-bottom:48px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------- Workflow strip ---------- */
.workflow{ display:flex; align-items:stretch; gap:0; overflow-x:auto; }
.workflow .step{ flex:1; min-width:150px; padding:22px 18px; border-right:1px solid var(--line); position:relative; }
.workflow .step:last-child{ border-right:none; }
.workflow .step .n{ font-family:var(--f-mono); color:var(--text-faint); font-size:0.7rem; }
.workflow .step h4{ font-family:var(--f-body); font-size:0.95rem; color:var(--white); margin:8px 0 4px; }
.workflow .step p{ font-size:0.8rem; margin:0; }

/* ---------- Table ---------- */
table.spec{ width:100%; border-collapse:collapse; font-size:0.92rem; }
table.spec th, table.spec td{ text-align:left; padding:12px 14px; border-bottom:1px solid var(--line); }
table.spec th{ font-family:var(--f-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--text-faint); }

/* ---------- FAQ ---------- */
.faq-item{ border-bottom:1px solid var(--line); }
.faq-item summary{ cursor:pointer; padding:18px 0; font-family:var(--f-display); font-weight:600; color:var(--white); list-style:none; display:flex; justify-content:space-between; align-items:center; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:'+'; font-family:var(--f-mono); color:var(--brass); font-size:1.2rem; }
.faq-item[open] summary::after{ content:'\2212'; }
.faq-item .a{ padding:0 0 20px; color:var(--text-dim); max-width:760px; }

/* ---------- Forms ---------- */
.form-panel{ background:var(--surface); border:1px solid var(--line); padding:32px; }
.f-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px; }
.f-field{ display:flex; flex-direction:column; gap:6px; }
.f-field label{ font-family:var(--f-mono); font-size:0.72rem; color:var(--text-dim); text-transform:uppercase; letter-spacing:0.05em; }
.f-field input, .f-field select, .f-field textarea{
  background:var(--ink); border:1px solid var(--line-strong); color:var(--text);
  padding:11px 12px; font-family:var(--f-body); font-size:0.92rem; border-radius:var(--radius);
}
.f-field textarea{ resize:vertical; min-height:100px; }
.f-note{ font-size:0.78rem; color:var(--text-faint); margin-top:12px; }
.f-status{ margin-top:14px; font-size:0.88rem; font-family:var(--f-mono); display:none; }
.f-status.show{ display:block; }
.f-status.ok{ color:var(--green); }
.f-status.err{ color:var(--red); }

/* ---------- Calculator ---------- */
.calc-grid{ display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start; }
.calc-out{ background:var(--ink); border:1px solid var(--line-strong); padding:26px; }
.calc-out .big{ font-family:var(--f-display); font-size:2.4rem; color:var(--brass); }
.calc-out .row{ display:flex; justify-content:space-between; padding:10px 0; border-bottom:1px solid var(--line); font-family:var(--f-mono); font-size:0.85rem; }

/* ---------- Badges / trust strip ---------- */
.trust-strip{ display:flex; flex-wrap:wrap; gap:32px; align-items:center; padding:28px 0; }
.trust-strip div{ font-family:var(--f-mono); font-size:0.78rem; color:var(--text-faint); }
.trust-strip strong{ display:block; color:var(--text); font-family:var(--f-display); font-size:1.4rem; }

.placeholder-flag{
  display:inline-flex; align-items:center; gap:6px;
  font-family:var(--f-mono); font-size:0.68rem; color:var(--red);
  border:1px dashed var(--red); padding:3px 8px; margin:6px 0;
}

/* ---------- CTA band ---------- */
.cta-band{ background:linear-gradient(135deg, var(--surface-2), var(--surface)); border-top:1px solid var(--line); border-bottom:1px solid var(--line); text-align:center; padding:72px 0; }
.cta-band h2{ margin-bottom:14px; }
.cta-band p{ max-width:560px; margin:0 auto 28px; }
.cta-actions{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ---------- Footer ---------- */
footer.site{ background:var(--surface); padding:64px 0 28px; }
.foot-grid{ display:grid; grid-template-columns:1.4fr repeat(4,1fr); gap:32px; margin-bottom:48px; }
.foot-col h4{ font-family:var(--f-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-faint); margin-bottom:16px; }
.foot-col a{ display:block; color:var(--text-dim); font-size:0.88rem; margin-bottom:10px; }
.foot-col a:hover{ color:var(--white); }
.foot-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:24px; border-top:1px solid var(--line); flex-wrap:wrap; gap:12px; }
.foot-bottom p{ margin:0; font-size:0.8rem; color:var(--text-faint); }
.social-row{ display:flex; gap:14px; }
.social-row a{ width:34px; height:34px; border:1px solid var(--line-strong); display:flex; align-items:center; justify-content:center; color:var(--text-dim); }
.social-row a:hover{ border-color:var(--brass); color:var(--brass); }
.legal-note{ font-size:0.75rem; color:var(--text-faint); max-width:820px; margin-top:18px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb{ font-family:var(--f-mono); font-size:0.75rem; color:var(--text-faint); padding:18px 0; }
.breadcrumb a{ color:var(--text-faint); }
.breadcrumb span{ color:var(--text-dim); }

/* ---------- Sticky mobile CTA ---------- */
.mobile-cta{ display:none; }

/* ---------- WhatsApp float ---------- */
.wa-float{
  position:fixed; right:22px; bottom:22px; z-index:60;
  width:56px; height:56px; border-radius:50%;
  background:#25D366; color:#06210f; display:flex; align-items:center; justify-content:center;
  border:none; cursor:pointer; box-shadow:0 6px 18px rgba(16,17,19,0.18);
}
.chat-float{
  position:fixed; right:22px; bottom:90px; z-index:60;
  width:56px; height:56px; border-radius:50%;
  background:var(--brass); color:var(--true-white); display:flex; align-items:center; justify-content:center;
  border:none; cursor:pointer; box-shadow:0 6px 18px rgba(16,17,19,0.18); font-family:var(--f-display); font-weight:700;
}

/* ---------- Chatbot panel ---------- */
#chatbot-panel{
  position:fixed; right:22px; bottom:160px; z-index:61;
  width:360px; max-width:calc(100vw - 44px); height:480px; max-height:60vh;
  background:var(--surface); border:1px solid var(--line-strong);
  display:none; flex-direction:column; box-shadow:0 12px 40px rgba(16,17,19,0.16);
}
#chatbot-panel.open{ display:flex; }
.cb-head{ padding:14px 16px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; align-items:center; }
.cb-head strong{ font-family:var(--f-display); font-size:0.9rem; }
.cb-head span{ display:block; font-family:var(--f-mono); font-size:0.62rem; color:var(--green); }
.cb-close{ background:none; border:none; color:var(--text-dim); cursor:pointer; font-size:1.1rem; }
.cb-body{ flex:1; overflow-y:auto; padding:14px 16px; display:flex; flex-direction:column; gap:10px; }
.cb-msg{ font-size:0.86rem; padding:9px 12px; max-width:85%; border-radius:4px; }
.cb-msg.bot{ background:var(--ink); border:1px solid var(--line); align-self:flex-start; }
.cb-msg.user{ background:var(--blue-dim); align-self:flex-end; color:var(--true-white); }
.cb-options{ display:flex; flex-wrap:wrap; gap:8px; }
.cb-opt{ background:transparent; border:1px solid var(--line-strong); color:var(--text-dim); font-size:0.78rem; padding:6px 10px; cursor:pointer; }
.cb-opt:hover{ border-color:var(--brass); color:var(--brass); }
.cb-input-row{ border-top:1px solid var(--line); padding:10px; display:flex; gap:8px; }
.cb-input-row input{ flex:1; background:var(--ink); border:1px solid var(--line-strong); color:var(--text); padding:9px 10px; font-size:0.85rem; }
.cb-input-row button{ background:var(--brass); border:none; color:var(--true-white); padding:0 14px; cursor:pointer; font-weight:700; }

/* ---------- Responsive ---------- */
@media (max-width: 1150px){
  .nav-cta .btn-ghost{ display:none; }
  nav.primary{ gap:16px; }
  nav.primary a{ font-size:0.8rem; }
}
/* 9 primary nav items simply don't fit a horizontal bar below ~980px —
   switch to the hamburger menu here rather than let the bar keep
   cramming and overflowing. */
@media (max-width: 980px){
  nav.primary{ display:none; }
  .menu-toggle{ display:block; }
  nav.primary.is-open{
    display:flex; flex-direction:column; gap:0;
    position:absolute; top:76px; left:0; right:0;
    height:auto;
    background:var(--ink);
    border-bottom:1px solid var(--line);
    box-shadow:0 16px 28px rgba(16,17,19,0.10);
    padding:6px 24px 18px;
    max-height:calc(100vh - 76px);
    overflow-y:auto;
  }
  nav.primary.is-open a{
    height:auto; width:100%; padding:14px 0;
    font-size:0.95rem;
    border-bottom:1px solid var(--line);
  }
  nav.primary.is-open a:last-child{ border-bottom:none; }
  nav.primary.is-open a::after{ display:none; }
}
@media (max-width: 960px){
  .hero-grid{ grid-template-columns:1fr; }
  .grid-3, .grid-4{ grid-template-columns:1fr 1fr; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .calc-grid{ grid-template-columns:1fr; }
}
@media (max-width: 720px){
  .nav-cta .btn-primary{ display:none; }
  .brand-tag{ display:none; }
  .grid-3, .grid-4, .grid-2{ grid-template-columns:1fr; }
  .f-row{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  section{ padding:56px 0; }
  .mobile-cta{
    display:flex; position:fixed; bottom:0; left:0; right:0; z-index:59;
    background:var(--surface); border-top:1px solid var(--line-strong);
  }
  .mobile-cta a{ flex:1; text-align:center; padding:14px 8px; font-size:0.8rem; font-weight:700; border-right:1px solid var(--line); color:var(--text); }
  .mobile-cta a:last-child{ border-right:none; }
  .wa-float, .chat-float{ bottom:70px; }
  #chatbot-panel{ bottom:130px; }
  body{ padding-bottom:52px; }
}