/* ============================================================
   PIVOTLB — Design tokens
   Palette: near-black ink base, blueprint grid lines, a copper
   accent (hardware / wiring) paired with a cyan signal accent
   (software / data) — the two colors literally embody the pivot
   between hardware and software.
   ============================================================ */
:root{
  --ink:        #0A0E12;
  --panel:      #12181F;
  --panel-2:    #161D25;
  --line:       #23303A;
  --line-soft:  #1A232B;
  --text:       #EDF1F3;
  --text-muted: #8996A0;
  --copper:     #E8963C;
  --copper-dim: #8A5B26;
  --cyan:       #5FD0DE;
  --cyan-dim:   #2E6E77;
  --danger:     #E36868;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --radius: 3px;
  --max: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin:0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}
h1{ font-size: clamp(2.4rem, 4.6vw, 3.6rem); }
h2{ font-size: clamp(1.7rem, 3vw, 2.3rem); }
h3{ font-size: 1.15rem; }
p{ margin: 0 0 1em; color: var(--text-muted); }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin:0; padding:0; }
button{ font-family: inherit; }

/* ---------- Blueprint grid backdrop ---------- */
.grid-backdrop{
  position: fixed; inset: 0; z-index: -1;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 40%, transparent 90%);
  opacity: .5;
}

/* ---------- Layout helpers ---------- */
.section{
  max-width: var(--max);
  margin: 0 auto;
  padding: 5.5rem 2rem;
}
.section-tag{
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--copper);
  margin-bottom: .9rem;
}
.section-sub{ max-width: 46ch; }
.section-head-row{
  display:flex; flex-wrap:wrap; gap: 1.5rem 3rem; justify-content: space-between; align-items: flex-end;
  margin-bottom: 2.5rem;
}
.section-head-row h2{ margin-bottom:.4rem; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5rem;
  padding: .8rem 1.5rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .02em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: all .15s ease;
}
.btn-primary{ background: var(--copper); color: #1A1002; font-weight: 500; }
.btn-primary:hover{ background: #F2A555; transform: translateY(-1px); }
.btn-ghost{ border-color: var(--line); color: var(--text); }
.btn-ghost:hover{ border-color: var(--cyan); color: var(--cyan); }
.btn-sm{ padding: .55rem 1.1rem; font-size: .78rem; }
.btn-full{ width: 100%; }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 40;
  display:flex; align-items:center; justify-content:space-between;
  gap: 1.5rem;
  padding: 1.1rem 2rem;
  background: rgba(10,14,18,.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.logo{
  display:flex; align-items:center; gap:.6rem;
  font-family: var(--font-mono); font-size: 1.05rem; letter-spacing: .04em;
}
.logo-sub{ color: var(--cyan); }
.logo-mark .pad{ fill: var(--copper); }
.logo-mark .trace-line{ stroke: var(--line); }
.logo-mark .pulse-ring{ fill: none; stroke: var(--cyan); stroke-width: 1; opacity: .6; transform-origin: 23px 7px; animation: ring-pulse 2.4s ease-out infinite; }
@keyframes ring-pulse{
  0%{ r:3; opacity:.8; }
  100%{ r:10; opacity:0; }
}
.site-nav{ display:flex; gap: 2rem; font-size: .92rem; }
.site-nav a{ color: var(--text-muted); transition: color .15s; }
.site-nav a:hover{ color: var(--cyan); }
.header-actions{ display:flex; align-items:center; gap: 1.3rem; }
.header-phone{ display:flex; align-items:center; gap:.4rem; font-family: var(--font-mono); font-size:.85rem; color: var(--text-muted); }
.header-phone:hover{ color: var(--copper); }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem 2rem 3rem;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
  overflow: hidden;
  border-radius: var(--radius);
}
.hero-video-bg{
  position: absolute; inset: 0; z-index: 0;
  overflow: hidden;
}
.hero-video-bg video{
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: .28;
  filter: saturate(1.15) contrast(1.05);
}
.hero-video-bg::after{
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, var(--ink) 0%, rgba(10,14,18,.75) 38%, rgba(10,14,18,.4) 100%),
    linear-gradient(180deg, transparent 55%, var(--ink) 100%);
}
.hero-copy, .hero-diagram{ position: relative; z-index: 1; }
@media (max-width: 560px){
  .hero-video-bg video{ display:none; }
  .hero-video-bg::after{ background: var(--ink); opacity: .96; }
}
.eyebrow{
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .1em;
  color: var(--cyan); text-transform: uppercase; margin-bottom: 1rem;
}
.hero h1{ color: var(--text); }
.hero h1 em{ font-style: normal; color: var(--copper); }
.hero-lede{ max-width: 48ch; font-size: 1.05rem; }
.hero-actions{ display:flex; gap: 1rem; flex-wrap: wrap; margin: 1.6rem 0 2.6rem; }
.hero-stats{ display:flex; gap: 2.4rem; flex-wrap:wrap; margin:0; }
.hero-stats dt{ font-family: var(--font-mono); font-size: .72rem; color: var(--text-muted); letter-spacing: .06em; text-transform: uppercase; margin-bottom:.25rem; }
.hero-stats dd{ margin:0; font-size: .92rem; color: var(--text); }

.hero-diagram{ position: relative; }
.trace-svg{ width: 100%; height: auto; }
.static-grid path{ stroke: var(--line-soft); stroke-width: 1; }
.trace{ fill:none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.path-a{ stroke: var(--cyan); stroke-dasharray: 12 10; animation: dash-flow 6s linear infinite; }
.path-b{ stroke: var(--copper); stroke-dasharray: 12 10; animation: dash-flow 7s linear infinite reverse; }
.path-c{ stroke: var(--line); stroke-width: 1.4; stroke-dasharray: 4 8; animation: dash-flow 9s linear infinite; }
@keyframes dash-flow{ to{ stroke-dashoffset: -220; } }
.hero-diagram .pad{ fill: var(--ink); stroke: var(--text-muted); stroke-width: 1.4; }
.node-label{ font-family: var(--font-mono); font-size: 9px; fill: var(--text-muted); opacity:.7; }

/* ---------- Backbone divider (signature element) ---------- */
.backbone{
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  height: 1px;
  background: var(--line);
}
.backbone .pulse{
  position: absolute; top:-1.5px; left:0;
  width: 90px; height: 4px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  filter: blur(.5px);
  animation: pulse-travel 5s ease-in-out infinite;
}
@keyframes pulse-travel{
  0%{ left: -5%; }
  100%{ left: 100%; }
}

/* ---------- Capabilities ---------- */
.cap-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem; }
.cap-panel{ background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem; }
.cap-kicker{ font-family: var(--font-mono); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan); }
.cap-panel:last-child .cap-kicker{ color: var(--copper); }
.cap-list{ margin-top: 1.4rem; display:flex; flex-direction:column; gap: 1.1rem; }
.cap-list li{ display:flex; flex-direction:column; gap:.2rem; padding-top: 1.1rem; border-top: 1px solid var(--line-soft); }
.cap-list li:first-child{ padding-top:0; border-top:none; }
.cap-list strong{ font-size: .98rem; color: var(--text); }
.cap-list span{ font-size: .88rem; color: var(--text-muted); }

/* ---------- Catalog ---------- */
.catalog-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1.25rem; }
.product-card{
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem; display:flex; flex-direction:column; gap:.6rem;
  transition: border-color .15s ease, transform .15s ease;
}
.product-card:hover{ border-color: var(--cyan-dim); transform: translateY(-2px); }
.product-tag{ font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--copper); }
.product-card h3{ margin: 0; font-size: 1.02rem; }
.product-spec{ font-family: var(--font-mono); font-size: .78rem; color: var(--text-muted); }
.product-desc{ font-size: .88rem; margin: 0; flex-grow: 1; }
.product-price{ font-family: var(--font-mono); font-size: .82rem; color: var(--cyan); }
.product-card .btn{ margin-top: .4rem; align-self: flex-start; }
.catalog-status{ font-family: var(--font-mono); font-size: .85rem; color: var(--text-muted); padding: 1rem 0; }

/* ---------- Process ---------- */
.process-row{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; margin-top: 2rem; }
.process-step{ border-top: 2px solid var(--line); padding-top: 1.2rem; }
.process-step .seq{ display:block; font-family: var(--font-mono); font-size: .75rem; color: var(--cyan); margin-bottom: .6rem; }
.process-step p{ font-size: .9rem; margin: 0; }

/* ---------- Contact / form ---------- */
.section-contact{ padding-bottom: 8rem; }
.contact-grid{ display:grid; grid-template-columns: .8fr 1.2fr; gap: 3rem; margin-top: 2rem; }
.contact-info{ align-self: start; position: sticky; top: 6rem; }
.contact-line{
  display:flex; align-items:center; gap: .7rem;
  font-family: var(--font-mono); font-size: .95rem;
  padding: .9rem 0; border-bottom: 1px solid var(--line-soft);
  color: var(--text);
}
.contact-line svg{ color: var(--copper); flex-shrink:0; }
.contact-line:hover{ color: var(--cyan); }

.project-form{ background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem; }
.project-form h3{ margin-bottom: 1.4rem; }
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field{ margin-bottom: 1.1rem; }
.field label{ display:block; font-family: var(--font-mono); font-size: .75rem; letter-spacing: .04em; text-transform: uppercase; color: var(--text-muted); margin-bottom: .4rem; }
.field input, .field select, .field textarea{
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: .92rem;
  padding: .7rem .8rem;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline: none; border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(95,208,222,.15);
}
.field textarea{ resize: vertical; }
.form-status{ margin: .9rem 0 0; font-family: var(--font-mono); font-size: .82rem; min-height: 1.2em; }
.form-status.ok{ color: var(--cyan); }
.form-status.err{ color: var(--danger); }

/* ---------- Footer ---------- */
.site-footer{ border-top: 1px solid var(--line-soft); padding: 3rem 2rem 1.5rem; }
.footer-row{ max-width: var(--max); margin: 0 auto; display:flex; flex-wrap:wrap; gap: 2.5rem; justify-content: space-between; }
.footer-brand .logo-text{ font-family: var(--font-mono); font-size: 1rem; }
.footer-brand p{ margin-top:.5rem; max-width: 30ch; font-size: .85rem; }
.footer-links, .footer-contact{ display:flex; flex-direction:column; gap:.6rem; font-size: .88rem; }
.footer-links a:hover, .footer-contact a:hover{ color: var(--cyan); }
.footer-copyright{ max-width: var(--max); margin: 2.5rem auto 0; font-family: var(--font-mono); font-size: .75rem; color: var(--text-muted); }

/* ---------- Floating contact button ---------- */
.float-contact{ position: fixed; right: 1.5rem; bottom: 1.5rem; z-index: 50; display:flex; flex-direction:column; align-items:flex-end; gap:.7rem; }
.float-toggle{
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--copper); color: #1A1002; border: none;
  display:flex; align-items:center; justify-content:center;
  cursor: pointer; box-shadow: 0 6px 24px rgba(232,150,60,.35);
  transition: transform .15s ease;
}
.float-toggle:hover{ transform: scale(1.06); }
.float-panel{
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .6rem; display:flex; flex-direction:column; gap:.3rem;
  box-shadow: 0 12px 32px rgba(0,0,0,.4);
}
.float-option{
  display:flex; align-items:center; gap:.6rem;
  padding: .6rem .8rem; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: .82rem; white-space: nowrap;
  color: var(--text);
}
.float-option svg{ color: var(--cyan); }
.float-option:hover{ background: var(--panel-2); }

/* ---------- Admin panel ---------- */
.admin-shell{ max-width: 980px; margin: 0 auto; padding: 3rem 2rem 6rem; }
.admin-header{ display:flex; align-items:center; justify-content:space-between; gap:1rem; margin-bottom: 2.5rem; flex-wrap:wrap; }
.admin-header h1{ font-size: 1.5rem; margin:0; }
.admin-back{ font-family: var(--font-mono); font-size:.82rem; color: var(--text-muted); }
.admin-back:hover{ color: var(--cyan); }

.admin-login{ max-width: 380px; margin: 4rem auto; background: var(--panel); border:1px solid var(--line); border-radius: var(--radius); padding: 2rem; text-align:center; }
.admin-login h2{ margin-bottom:.4rem; }
.admin-login p{ font-size:.88rem; }
.admin-login .field{ text-align:left; margin-top: 1.2rem; }

.admin-section{ margin-bottom: 3rem; }
.admin-section-head{ display:flex; align-items:baseline; justify-content:space-between; gap:1rem; margin-bottom: 1.2rem; }
.admin-section-head h2{ font-size: 1.15rem; margin:0; }
.admin-count{ font-family: var(--font-mono); font-size:.78rem; color: var(--text-muted); }

.admin-card{ background: var(--panel); border:1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.admin-card + .admin-card{ margin-top: 1rem; }

.chip-row{ display:flex; flex-wrap:wrap; gap:.6rem; margin-bottom: 1.4rem; }
.chip{
  display:inline-flex; align-items:center; gap:.5rem;
  font-family: var(--font-mono); font-size:.8rem;
  background: var(--panel-2); border:1px solid var(--line); border-radius: 999px;
  padding: .4rem .5rem .4rem .9rem; color: var(--text);
}
.chip button{
  display:flex; align-items:center; justify-content:center;
  width: 18px; height: 18px; border-radius:50%;
  background: transparent; border: 1px solid var(--line); color: var(--text-muted);
  font-size: .7rem; line-height:1; cursor:pointer;
}
.chip button:hover{ border-color: var(--danger); color: var(--danger); }

.admin-inline-form{ display:flex; gap:.7rem; flex-wrap:wrap; align-items:flex-end; }
.admin-inline-form .field{ margin-bottom:0; flex: 1 1 180px; }

.admin-table{ width:100%; border-collapse: collapse; }
.admin-table th{ text-align:left; font-family: var(--font-mono); font-size:.72rem; letter-spacing:.06em; text-transform:uppercase; color: var(--text-muted); padding: .6rem .7rem; border-bottom: 1px solid var(--line); }
.admin-table td{ padding: .7rem; border-bottom: 1px solid var(--line-soft); font-size:.88rem; vertical-align: top; }
.admin-table td.mono{ font-family: var(--font-mono); font-size:.78rem; color: var(--text-muted); }
.admin-table tr:last-child td{ border-bottom:none; }
.admin-table .btn-danger{ border-color: var(--danger); color: var(--danger); }
.admin-table .btn-danger:hover{ background: var(--danger); color: var(--ink); }
.admin-empty{ font-family: var(--font-mono); font-size:.85rem; color: var(--text-muted); padding: 1rem 0; }

.admin-product-form{ margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line-soft); }
.admin-product-form .form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

@media (max-width: 700px){
  .admin-table{ display:block; overflow-x:auto; }
  .admin-product-form .form-row{ grid-template-columns: 1fr; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .site-nav{ display:none; }
  .hero{ grid-template-columns: 1fr; padding-top: 2.5rem; }
  .hero-diagram{ order: -1; max-width: 320px; margin: 0 auto; }
  .cap-grid{ grid-template-columns: 1fr; }
  .process-row{ grid-template-columns: 1fr 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .contact-info{ position: static; }
  .form-row{ grid-template-columns: 1fr; }
}
@media (max-width: 560px){
  .process-row{ grid-template-columns: 1fr; }
  .header-actions .header-phone{ display:none; }
  .section{ padding: 3.5rem 1.25rem; }
}