/* ============================================================
   DATA AS A SERVICE LTD — Site Stylesheet
   Theme: "Grid & Current" — a dark infrastructure canvas
   (deep night-navy) threaded with amber power-grid light and
   cyan data-flow lines, echoing the brief's own metaphor:
   roads connect cities, power grids connect communities,
   this technology connects systems.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  /* -- surfaces -- */
  --bg: #090d17;
  --bg-alt: #0c1220;
  --panel: #101929;
  --panel-light: #15203a;
  --border: rgba(237,241,247,0.08);
  --border-strong: rgba(237,241,247,0.16);

  /* -- text -- */
  --text: #edf1f7;
  --text-dim: #a9b2c7;
  --text-mute: #6c7690;

  /* -- signal colors -- */
  --amber: #f0a93e;
  --amber-soft: #f0a93e26;
  --cyan: #3ad6c9;
  --cyan-soft: #3ad6c926;

  /* -- type -- */
  --f-display: 'Space Grotesk', sans-serif;
  --f-body: 'IBM Plex Sans', sans-serif;
  --f-mono: 'IBM Plex Mono', monospace;

  /* -- misc -- */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --maxw: 1180px;
  --ease: cubic-bezier(.16,.8,.24,1);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; overflow-x: hidden; }
@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; scroll-behavior: auto !important; }
}

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

/* faint grid backdrop across the whole site */
body::before{
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 75%);
}

h1,h2,h3,h4{
  font-family: var(--f-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}
p{ margin: 0 0 1em; color: var(--text-dim); }
a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display: block; }
ul{ margin:0; padding:0; list-style:none; }

.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 18px;
}
.eyebrow::before{
  content: "";
  width: 18px; height: 1px;
  background: var(--amber);
}

/* ============ BUTTONS ============ */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 13.5px;
  letter-spacing: 0.03em;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn-primary{
  background: var(--amber);
  color: #14100a;
  font-weight: 600;
}
.btn-primary:hover{ transform: translateY(-2px); background: #f7b85c; }
.btn-ghost{
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover{ border-color: var(--amber); color: var(--amber); transform: translateY(-2px); }
.btn-block{ width: 100%; justify-content: center; }
.btn[disabled]{ opacity: .55; cursor: not-allowed; transform:none !important; }

/* ============ HEADER / NAV ============ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(9,13,23,0.72);
  border-bottom: 1px solid var(--border);
  transition: padding .3s var(--ease), background .3s var(--ease);
}
.site-header .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
  transition: padding .3s var(--ease);
}
.site-header.scrolled .container{ padding-top: 12px; padding-bottom: 12px; }

.brand{ display: flex; align-items: center; gap: 12px; }
.brand-mark{
  width: 38px; height: 38px;
  border-radius: 9px;
  background: linear-gradient(145deg, var(--panel-light), var(--panel));
  border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  /* Drop a logo image here — e.g. <img src="logo.svg" alt="Data As A Service Ltd"> */
}
.brand-mark svg{ width: 20px; height: 20px; }
.brand-word{ font-family: var(--f-display); font-size: 16.5px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.1; }
.brand-word span{ display:block; font-family: var(--f-mono); font-weight:400; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-mute); margin-top:2px; }

.nav-links{ display: flex; align-items: center; gap: 34px; }
.nav-links a{
  font-size: 14.5px;
  color: var(--text-dim);
  position: relative;
  padding: 4px 0;
  transition: color .2s var(--ease);
}
.nav-links a:hover, .nav-links a.active{ color: var(--text); }
.nav-links a.active::after{
  content: "";
  position: absolute; left:0; right:0; bottom: -6px;
  height: 2px; background: var(--amber);
}
.nav-cta{ display:flex; align-items:center; gap:16px; }

.nav-toggle{
  display: none;
  width: 40px; height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  align-items: center; justify-content: center;
  cursor: pointer;
}

@media (max-width: 920px){
  .nav-links{
    position: fixed; top: 73px; left:0; right:0; bottom:0;
    background: var(--bg-alt);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 28px;
    gap: 22px;
    transform: translateX(100%);
    transition: transform .35s var(--ease);
    z-index: 90;
    overflow-y: auto;
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-links a{ font-size: 20px; }
  .nav-cta .btn-ghost{ display:none; }
  .nav-toggle{ display: flex; }
}

/* ============ HERO ============ */
.hero{
  position: relative;
  padding: 96px 0 84px;
  overflow: hidden;
}
.hero-grid{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.hero h1{
  font-size: clamp(2.4rem, 4.6vw, 4rem);
  max-width: 12ch;
}
.hero h1 em{ font-style: normal; color: var(--amber); }
.hero-sub{ font-size: 17.5px; max-width: 46ch; margin-bottom: 30px; }
.hero-actions{ display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }

.hero-stats{
  display: flex; gap: 36px; flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.hero-stat b{
  display:block; font-family: var(--f-display); font-size: 26px; color: var(--text);
}
.hero-stat span{ font-family: var(--f-mono); font-size: 11.5px; color: var(--text-mute); text-transform: uppercase; letter-spacing: .08em; }

.node-map{ position: relative; width: 100%; aspect-ratio: 1/1; }
.node-map svg{ width: 100%; height: 100%; }
.node-map .line{ stroke: var(--border-strong); stroke-width: 1; fill:none; }
.node-map .line.live{ stroke: var(--cyan); stroke-dasharray: 4 7; animation: dash 5s linear infinite; opacity:.75; }
.node-map .node{ fill: var(--panel-light); stroke: var(--border-strong); stroke-width: 1.2; }
.node-map .node.hub{ fill: var(--amber); stroke: none; }
.node-map .pulse{ fill: none; stroke: var(--amber); stroke-width: 1.4; opacity: 0; transform-origin: center; }
.node-map .pulse{ animation: pulseRing 3.2s var(--ease) infinite; }
.node-map .pulse.d2{ animation-delay: 1s; }
.node-map .pulse.d3{ animation-delay: 2s; }

@keyframes dash{ to{ stroke-dashoffset: -110; } }
@keyframes pulseRing{
  0%{ opacity: .9; transform: scale(0.3); }
  75%{ opacity: 0; transform: scale(2.6); }
  100%{ opacity: 0; transform: scale(2.6); }
}

/* ============ SECTION SCAFFOLDING ============ */
section{ position: relative; padding: 100px 0; }
.section-alt{ background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head{ max-width: 640px; margin-bottom: 56px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head h2{ font-size: clamp(1.7rem,3vw,2.5rem); }

.reveal{ opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity: 1; transform: translateY(0); }

/* ============ CARDS / GRID ============ */
.grid{ display: grid; gap: 24px; }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.card:hover{ transform: translateY(-4px); border-color: var(--border-strong); background: var(--panel-light); }
.card .num{ font-family: var(--f-mono); color: var(--amber); font-size: 12.5px; letter-spacing: .08em; margin-bottom: 16px; display:block; }
.card h3{ font-size: 19px; margin-bottom: 10px; }
.card p{ font-size: 14.5px; margin-bottom: 0; }
.card-icon{
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--amber-soft); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg{ width: 22px; height: 22px; stroke: var(--amber); }

/* industries pill strip */
.pill-row{ display: flex; flex-wrap: wrap; gap: 12px; }
.pill{
  font-family: var(--f-mono); font-size: 13px;
  padding: 10px 18px; border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  transition: color .2s, border-color .2s, background .2s;
}
.pill:hover{ color: var(--text); border-color: var(--cyan); background: var(--cyan-soft); }

/* value / feature rows with connecting line (used sparingly — content here is a real list, not decoration) */
.trace-list{ position: relative; padding-left: 28px; }
.trace-list::before{ content:""; position:absolute; left: 5px; top: 8px; bottom: 8px; width: 1px; background: linear-gradient(var(--amber), transparent 92%); }
.trace-item{ position: relative; padding-bottom: 30px; }
.trace-item:last-child{ padding-bottom: 0; }
.trace-item::before{ content:""; position:absolute; left: -28px; top: 4px; width: 11px; height: 11px; border-radius: 50%; background: var(--bg); border: 2px solid var(--amber); }
.trace-item h4{ font-size: 17px; margin-bottom: 6px; }
.trace-item p{ font-size: 14.5px; margin-bottom: 0; }

/* CTA band */
.cta-band{
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--panel-light), var(--panel));
  border: 1px solid var(--border-strong);
  padding: 56px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}
.cta-band::after{
  content:""; position:absolute; right:-60px; top:-60px; width:220px; height:220px; border-radius:50%;
  background: radial-gradient(circle, var(--amber-soft), transparent 70%);
}
.cta-band h3{ font-size: 26px; max-width: 16ch; margin-bottom: 8px; }
.cta-band .btn-row{ display:flex; gap:14px; flex-shrink:0; flex-wrap: wrap; }

/* ============ FOOTER ============ */
footer{
  border-top: 1px solid var(--border);
  padding: 72px 0 32px;
  background: var(--bg-alt);
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}
.footer-brand p{ font-size: 14px; max-width: 34ch; }
.footer-col h5{
  font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-mute); margin-bottom: 18px;
}
.footer-col a, .footer-col span{
  display: block; font-size: 14.5px; color: var(--text-dim); margin-bottom: 12px;
  transition: color .2s;
}
.footer-col a:hover{ color: var(--amber); }
.footer-bottom{
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px; border-top: 1px solid var(--border);
  font-family: var(--f-mono); font-size: 12.5px; color: var(--text-mute); flex-wrap: wrap; gap: 12px;
}
.social-row{ display:flex; gap:14px; }
.social-row a{ width:34px; height:34px; border:1px solid var(--border-strong); border-radius:8px; display:flex; align-items:center; justify-content:center; }
.social-row a:hover{ border-color: var(--amber); }
.social-row svg{ width:16px; height:16px; }

/* ============ PAGE HEADER (inner pages) ============ */
.page-header{
  padding: 150px 0 70px;
  position: relative;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 60% 100% at 85% 0%, var(--cyan-soft), transparent 60%),
    radial-gradient(ellipse 50% 80% at 10% 0%, var(--amber-soft), transparent 60%);
}
.page-header h1{ font-size: clamp(2rem, 4vw, 3.1rem); max-width: 16ch; }
.breadcrumb{ font-family: var(--f-mono); font-size: 12.5px; color: var(--text-mute); margin-bottom: 18px; letter-spacing:.04em; }
.breadcrumb a:hover{ color: var(--amber); }

/* ============ FORMS ============ */
.form-panel{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 42px;
}
.form-row{ display: grid; gap: 20px; margin-bottom: 20px; }
.form-row.two{ grid-template-columns: 1fr 1fr; }
.field label{
  display: block; font-family: var(--f-mono); font-size: 12px; letter-spacing:.06em; text-transform: uppercase;
  color: var(--text-mute); margin-bottom: 9px;
}
.field input, .field select, .field textarea{
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-family: var(--f-body);
  font-size: 14.5px;
  transition: border-color .2s;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline: none; border-color: var(--amber);
}
.field textarea{ resize: vertical; min-height: 110px; }
.field-error{ color: #ef7373; font-size: 12.5px; margin-top: 6px; display:none; font-family: var(--f-mono); }
.field.invalid input, .field.invalid textarea, .field.invalid select{ border-color: #ef7373; }
.field.invalid .field-error{ display:block; }

.slot-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap:10px; margin-top:8px; }
.slot{
  padding: 11px 6px; text-align:center; border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong); font-family: var(--f-mono); font-size: 13px; cursor:pointer;
  color: var(--text-dim); background: var(--bg-alt);
  transition: all .2s;
}
.slot:hover{ border-color: var(--cyan); }
.slot.selected{ background: var(--amber); border-color: var(--amber); color:#14100a; font-weight:600; }
.slot[disabled]{ opacity:.3; pointer-events:none; }

.form-success{
  display:none; text-align:center; padding: 50px 20px;
}
.form-success.show{ display:block; }
.form-success .check{
  width:64px; height:64px; margin:0 auto 22px; border-radius:50%;
  background: var(--amber-soft); border:1px solid var(--amber);
  display:flex; align-items:center; justify-content:center;
}
.form-success .check svg{ width:28px; height:28px; stroke:var(--amber); }

.note-box{
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  color: var(--text-mute);
  margin-top: 18px;
}

/* ============ NEWS / PROJECTS ============ */
.tag-row{ display:flex; gap:8px; margin-bottom:14px; flex-wrap:wrap; }
.tag{ font-family: var(--f-mono); font-size: 11px; text-transform:uppercase; letter-spacing:.06em; color: var(--cyan); background: var(--cyan-soft); padding: 5px 10px; border-radius:5px; }
.meta-row{ display:flex; gap:16px; font-family: var(--f-mono); font-size: 12px; color: var(--text-mute); margin-top:16px; }
.media-block{
  aspect-ratio: 16/10; border-radius: var(--radius); overflow:hidden; margin-bottom:20px;
  background: linear-gradient(150deg, var(--panel-light), var(--bg-alt));
  border: 1px solid var(--border);
  position: relative;
}
.media-block::after{
  content: attr(data-label);
  position: absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family: var(--f-mono); font-size: 12px; color: var(--text-mute); text-align:center; padding: 20px;
}

.filter-row{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom: 40px; }
.filter-btn{
  font-family: var(--f-mono); font-size:12.5px; padding: 9px 16px; border-radius:999px;
  border: 1px solid var(--border-strong); background:transparent; color: var(--text-dim); cursor:pointer;
}
.filter-btn.active, .filter-btn:hover{ border-color: var(--amber); color: var(--amber); }

.status-dot{ width:7px; height:7px; border-radius:50%; background:var(--cyan); display:inline-block; margin-right:7px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 920px){
  .hero-grid{ grid-template-columns: 1fr; }
  .node-map{ max-width: 380px; margin: 0 auto; }
  .grid-3, .grid-4{ grid-template-columns: 1fr 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .cta-band{ flex-direction: column; align-items: flex-start; }
  .form-row.two{ grid-template-columns: 1fr; }
}
@media (max-width: 600px){
  .container{ padding: 0 20px; }
  section{ padding: 72px 0; }
  .grid-3, .grid-4, .grid-2{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom{ flex-direction: column; align-items: flex-start; }
  .cta-band{ padding: 34px; }
  .slot-grid{ grid-template-columns: repeat(2,1fr); }
  .form-panel{ padding: 26px; }
}