/* =========================================================
   TOKENS
========================================================= */
:root{
  --bg: #090d14;
  --bg-soft: #0f1420;
  --surface: #131a28;
  --surface-2: #171f30;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  --text: #eef2f6;
  --text-dim: #8c97aa;
  --text-faint: #5c6577;

  --teal: #00d9b8;
  --teal-dim: rgba(0,217,184,0.14);
  --amber: #ffb454;
  --amber-dim: rgba(255,180,84,0.14);

  --font-display: "DM Sans", sans-serif;
  --font-mono: "DM Mono", monospace;

  --radius: 14px;
  --radius-sm: 8px;
  --container: 1180px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

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

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

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

h1,h2,h3{
  color: var(--text);
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

a{ color: inherit; text-decoration: none; }
p{ margin: 0; }
svg{ display:block; }
button{ font-family: inherit; }

:focus-visible{
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =========================================================
   BACKGROUND LAYERS
========================================================= */
.bg-grid{
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 75%);
  opacity: 0.5;
}

.bg-glow{
  position: fixed;
  top: -200px;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0,217,184,0.16) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
  transition: transform 0.6s var(--ease);
}

/* =========================================================
   LAYOUT HELPERS
========================================================= */
.section{
  max-width: var(--container);
  margin: 0 auto;
  padding: 120px 32px;
}
.section-alt{ background: linear-gradient(180deg, transparent, var(--bg-soft) 8%, var(--bg-soft) 92%, transparent); }

.section-eyebrow{ margin-bottom: 18px; }
.section-title{
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  font-weight: 700;
  max-width: 640px;
  margin-bottom: 56px;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow .dot{
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-dim);
  animation: blink 2s infinite;
}
@keyframes blink{ 0%,100%{opacity:1;} 50%{opacity:.35;} }

.accent-teal{ color: var(--teal); }

/* =========================================================
   NAV
========================================================= */
.nav{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(9,13,20,0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled{ border-bottom-color: var(--border); }

.nav-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo{
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text);
  font-weight: 500;
}
.logo-dim{ color: var(--text-faint); }

.nav-links{
  display: flex;
  align-items: center;
  gap: 36px;
  font-size: 0.92rem;
}
.nav-links a{
  color: var(--text-dim);
  transition: color 0.2s;
}
.nav-links a:hover{ color: var(--text); }

.nav-cta{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--bg) !important;
  background: var(--teal);
  padding: 9px 18px;
  border-radius: 100px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.nav-cta:hover{ transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,217,184,0.3); }

.nav-toggle{
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span{
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

/* =========================================================
   HERO
========================================================= */
.hero{
  max-width: var(--container);
  margin: 0 auto;
  padding: 90px 32px 40px;
  text-align: center;
}
.hero-inner{
  max-width: 780px;
  margin: 0 auto;
}
.hero-title{
  font-size: clamp(2.4rem, 5.4vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  margin: 22px 0 24px;
}
.hero-sub{
  font-size: 1.1rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto;
}
.hero-actions{
  margin-top: 40px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.96rem;
  padding: 14px 28px;
  border-radius: 100px;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s;
  display: inline-block;
}
.btn-primary{
  background: var(--teal);
  color: var(--bg);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,217,184,0.28); }
.btn-ghost{
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover{ border-color: var(--teal); color: var(--teal); transform: translateY(-2px); }

/* ---- pipeline diagram ---- */
.pipeline-wrap{
  margin-top: 70px;
  width: 100%;
  overflow-x: auto;
}
.pipeline-svg{
  width: 100%;
  min-width: 640px;
  height: auto;
  max-width: 940px;
  margin: 0 auto;
  display: block;
  overflow: visible;
}
.flow-track{
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 2;
}
.flow-dot{ filter: drop-shadow(0 0 6px currentColor); }
.dot-teal{ fill: var(--teal); color: var(--teal); }
.dot-amber{ fill: var(--amber); color: var(--amber); }

.node .node-ring{
  fill: var(--surface);
  stroke: var(--border-strong);
  stroke-width: 2;
}
.node .node-core{ fill: var(--text-faint); }
.node-active .node-ring{ stroke: var(--amber); }
.node-active .node-core{ fill: var(--amber); }
.node-label{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  fill: var(--text);
  text-anchor: middle;
}
.node-caption{
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--text-faint);
  text-anchor: middle;
}

/* =========================================================
   STATS
========================================================= */
.stats{
  max-width: var(--container);
  margin: 100px auto 0;
  padding: 48px 32px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-inner{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-number{
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--text);
}
.stat-label{
  font-size: 0.85rem;
  color: var(--text-faint);
}
.stats-note{
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 28px;
  opacity: 0.7;
}

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

.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.25s var(--ease), border-color 0.25s;
}
.card:hover{ transform: translateY(-4px); border-color: var(--border-strong); }

.card-icon{
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--teal-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card-icon svg{
  width: 24px; height: 24px;
  fill: none;
  stroke: var(--teal);
  stroke-width: 2;
}
.card h3{ font-size: 1.06rem; margin-bottom: 10px; }
.card p{ font-size: 0.92rem; color: var(--text-dim); }

/* =========================================================
   PROCESS / TIMELINE
========================================================= */
.timeline{
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  padding-top: 8px;
}
.timeline-line{
  position: absolute;
  top: 15px;
  left: 4%;
  right: 4%;
  height: 1px;
  background: var(--border-strong);
}
.timeline-step{
  position: relative;
  padding-top: 46px;
}
.step-num{
  position: absolute;
  top: -3px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--bg);
  background: var(--teal);
  width: 30px; height: 30px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.timeline-step h3{ font-size: 1rem; margin-bottom: 8px; }
.timeline-step p{ font-size: 0.88rem; }

/* =========================================================
   WORK / CASE STUDIES
========================================================= */
.work-grid{ grid-template-columns: repeat(3, 1fr); }
.work-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s var(--ease), border-color 0.25s;
}
.work-card:hover{ transform: translateY(-4px); border-color: var(--border-strong); }
.work-tag{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin-bottom: 14px;
}
.work-card h3{ font-size: 1.08rem; margin-bottom: 10px; }
.work-desc{ font-size: 0.9rem; margin-bottom: 20px; }
.work-metric{
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.metric-num{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.7rem;
  color: var(--teal);
}
.metric-label{ font-size: 0.8rem; color: var(--text-faint); }
.tags{
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tags span{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: 100px;
}

/* =========================================================
   ABOUT
========================================================= */
.about-grid{
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 64px;
  align-items: start;
}
.avatar{
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  background: linear-gradient(155deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 3.4rem;
  font-weight: 500;
  color: var(--teal);
  position: sticky;
  top: 120px;
}
.about-copy p{ margin-bottom: 18px; max-width: 620px; }
.stack{ margin-top: 32px; display: flex; flex-direction: column; gap: 18px; }
.stack-label{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  display: block;
  margin-bottom: 10px;
}
.chips{ display: flex; flex-wrap: wrap; gap: 8px; }
.chips span{
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 100px;
}

/* =========================================================
   CONTACT
========================================================= */
.contact{ text-align: center; }
.contact .section-title{ margin: 0 auto 12px; }
.contact-sub{
  max-width: 480px;
  margin: 0 auto 48px;
  font-size: 1rem;
}
.contact-form{
  max-width: 560px;
  margin: 0 auto;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row{ display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field{ display: flex; flex-direction: column; gap: 8px; }
.field label{
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.field input, .field textarea{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.2s;
}
.field input:focus, .field textarea:focus{
  outline: none;
  border-color: var(--teal);
}
.contact-form .btn{ align-self: flex-start; border: none; cursor: pointer; }
.form-status{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--teal);
  min-height: 1.2em;
}

.contact-alt{
  margin-top: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.contact-alt > a{
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text);
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 4px;
  transition: color 0.2s, border-color 0.2s;
}
.contact-alt > a:hover{ color: var(--teal); border-color: var(--teal); }
.socials{ display: flex; gap: 14px; }
.socials a{
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  transition: border-color 0.2s, color 0.2s;
}
.socials a:hover{ border-color: var(--teal); color: var(--teal); }

/* =========================================================
   FOOTER
========================================================= */
.footer{
  text-align: center;
  padding: 36px 32px 48px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}

/* =========================================================
   SCROLL REVEAL
========================================================= */
.reveal{
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width: 960px){
  .services-grid{ grid-template-columns: repeat(2, 1fr); }
  .work-grid{ grid-template-columns: 1fr; }
  .about-grid{ grid-template-columns: 1fr; }
  .avatar{ width: 140px; position: static; margin: 0 auto; }
  .timeline{ grid-template-columns: 1fr; gap: 32px; }
  .timeline-line{ display: none; }
  .stats-inner{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px){
  .nav-links{
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 32px;
    gap: 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
  }
  .nav-links.open{
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-toggle{ display: flex; }
  .services-grid{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
  .section{ padding: 90px 24px; }
}