/* ============================================================
   MECWIN GREEN PROPULSIONS — design tokens
   ============================================================ */
:root{
  --bg-void: #0D1310;
  --bg-surface: #121B16;
  --bg-surface-2: #1A2620;
  --copper: #C6784A;
  --copper-bright: #E2925E;
  --volt: #8FD14F;
  --volt-dim: #5C9A3C;
  --text-primary: #F1EFE4;
  --text-muted: #93A79A;
  --line: rgba(241,239,228,0.09);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container: 1180px;
  --radius: 14px;
}

*{ box-sizing: border-box; margin:0; padding:0; }

html{ scroll-behavior: smooth; }

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

body{
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a{ color: inherit; text-decoration: none; }

h1,h2,h3{ font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }

img, svg{ display:block; max-width:100%; }

.grain{
  position: fixed; inset:0; pointer-events:none; z-index: 9999;
  opacity: 0.035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--volt);
  margin-bottom: 14px;
}

.section-lead{ color: var(--text-muted); max-width: 46ch; font-size: 1.05rem; }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 13px 26px; border-radius: 999px; font-family: var(--font-mono);
  font-size: 0.9rem; letter-spacing: 0.02em; cursor:pointer; border: 1px solid transparent;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.btn:hover{ transform: translateY(-2px); }
.btn-primary{ background: var(--volt); color: #0D1310; }
.btn-primary:hover{ background: var(--copper-bright); }
.btn-ghost{ border-color: var(--line); color: var(--text-primary); }
.btn-ghost:hover{ border-color: var(--volt); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(13,19,16,0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  max-width: var(--container); margin: 0 auto; padding: 16px 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand-mark svg{ display:block; }
.brand-text{
  font-family: var(--font-display); font-weight:700; font-size: 1.05rem; letter-spacing: 0.03em;
  display:flex; flex-direction:column; line-height: 1.1;
}
.brand-sub{ font-family: var(--font-mono); font-weight:400; font-size: 0.6rem; letter-spacing: 0.14em; color: var(--copper); }

.main-nav{ display:flex; align-items:center; gap: 30px; }
.nav-link{
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted);
  position: relative; transition: color 0.2s ease;
}
.nav-link:hover{ color: var(--text-primary); }
.nav-cta{
  color: var(--bg-void); background: var(--volt); padding: 9px 18px; border-radius: 999px;
}
.nav-cta:hover{ color: var(--bg-void); background: var(--copper-bright); }

.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-primary); border-radius: 2px; }

/* ============================================================
   HERO
   ============================================================ */
.hero{ position: relative; padding: 90px 24px 60px; }
.hero-inner{
  max-width: var(--container); margin: 0 auto;
  display:grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items:center;
}
.hero-copy h1{ font-size: clamp(2.3rem, 4.6vw, 3.6rem); line-height: 1.08; margin-bottom: 22px; }
.accent-underline{ position:relative; color: var(--volt); }
.hero-lead{ color: var(--text-muted); max-width: 52ch; font-size: 1.08rem; margin-bottom: 34px; }
.hero-actions{ display:flex; gap: 16px; flex-wrap: wrap; }

.hero-visual{ position: relative; display:flex; flex-direction:column; align-items:center; gap: 16px; }
.motor-svg{ width: 100%; max-width: 400px; }
.motor-housing{ fill: var(--bg-surface); stroke: var(--line); stroke-width: 1; }
.motor-stator-ring{ fill:none; stroke: rgba(198,120,74,0.35); stroke-width: 1.5; stroke-dasharray: 3 6; }
.motor-rotor{ fill: var(--bg-surface-2); stroke: var(--copper); stroke-width: 2; }
.motor-shaft{ fill: #0D1310; stroke: var(--copper-bright); stroke-width: 2; }
.rotor-poles rect{ fill: var(--copper); opacity: 0.85; }
#rotorGroup{ transform-origin: 210px 210px; animation: spin 6s linear infinite; }
@keyframes spin{ to{ transform: rotate(360deg); } }

.coil{ fill:none; stroke: var(--copper); stroke-width: 8; stroke-linecap: round; opacity: 0.5; }
.coil.active{ stroke: var(--volt); opacity: 1; filter: drop-shadow(0 0 6px rgba(143,209,79,0.7)); }

.visual-caption{ font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); letter-spacing: 0.04em; }

.scroll-cue{
  position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%);
  display:flex; flex-direction: column; align-items:center; gap: 8px; opacity: 0.5;
}
.scroll-cue span{ width:1px; height: 30px; background: linear-gradient(var(--volt), transparent); animation: scrollcue 1.8s ease infinite; }
.scroll-cue p{ font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase; }
@keyframes scrollcue{ 0%{ opacity:0; transform: scaleY(0.4);} 50%{opacity:1; transform: scaleY(1);} 100%{opacity:0; transform: scaleY(0.4);} }

/* ============================================================
   STATS STRIP
   ============================================================ */
.stats-strip{
  max-width: var(--container); margin: 0 auto; padding: 46px 24px;
  display:grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.stat{ text-align:center; padding: 0 12px; border-left: 1px solid var(--line); }
.stat:first-child{ border-left:none; }
.stat-num{ font-family: var(--font-display); font-size: clamp(2rem, 4vw, 2.8rem); color: var(--volt); font-weight: 700; }
.stat-label{ font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-top: 6px; }

/* ============================================================
   SECTIONS SHARED
   ============================================================ */
section{ padding: 100px 24px; }
.section-head{ max-width: var(--container); margin: 0 auto 48px; }
.section-head h2{ font-size: clamp(1.7rem, 3vw, 2.3rem); max-width: 20ch; margin-bottom: 16px; }

/* ============================================================
   PRODUCTS
   ============================================================ */
.products{ background: var(--bg-surface); }
.product-grid{
  max-width: var(--container); margin: 0 auto;
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
}
.product-card{
  background: var(--bg-surface-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 24px; transition: transform 0.3s ease, border-color 0.3s ease;
}
.product-card:hover{ transform: translateY(-6px); border-color: var(--copper); }
.card-icon{ width: 44px; height: 44px; color: var(--copper); margin-bottom: 20px; }
.product-card h3{ font-size: 1.08rem; margin-bottom: 10px; }
.product-card p{ color: var(--text-muted); font-size: 0.94rem; }

/* ============================================================
   SUSTAINABILITY
   ============================================================ */
.sustainability{
  max-width: var(--container); margin: 0 auto;
  display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items:center;
}
.sustainability h2{ max-width: 18ch; font-size: clamp(1.7rem, 3vw, 2.3rem); margin-bottom: 20px; }
.sustainability p{ color: var(--text-muted); max-width: 52ch; margin-bottom: 26px; }
.sustain-list{ list-style:none; display:flex; flex-direction:column; gap: 14px; }
.sustain-list li{ display:flex; align-items:flex-start; gap: 12px; color: var(--text-primary); font-size: 0.98rem; }
.dot{ width:8px; height:8px; border-radius:50%; background: var(--volt); margin-top: 7px; flex-shrink:0; }

.sustain-visual{ display:flex; justify-content:center; }
.rings-svg{ width: 100%; max-width: 320px; }
.ring{ fill:none; stroke: var(--line); stroke-width: 1.5; }
.ring-1{ stroke: rgba(198,120,74,0.4); stroke-dasharray: 4 6; animation: rotateSlow 30s linear infinite; transform-origin: 150px 150px; }
.ring-2{ stroke: rgba(143,209,79,0.5); stroke-dasharray: 2 5; animation: rotateSlow 22s linear infinite reverse; transform-origin: 150px 150px; }
.ring-3{ stroke: var(--volt); animation: pulseRing 3s ease-in-out infinite; transform-origin: 150px 150px; }
@keyframes rotateSlow{ to{ transform: rotate(360deg); } }
@keyframes pulseRing{ 0%,100%{ opacity:0.6; } 50%{ opacity:1; } }
.ring-text-num{ font-family: var(--font-display); font-size: 2.4rem; fill: var(--text-primary); }
.ring-text-label{ font-family: var(--font-mono); font-size: 0.7rem; fill: var(--text-muted); letter-spacing: 0.05em; }

/* ============================================================
   GLOBAL PRESENCE
   ============================================================ */
.global{ background: var(--bg-surface); }
.global-grid{ max-width: var(--container); margin: 0 auto; display:grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.office-card{ background: var(--bg-void); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; }
.office-tag{ font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--copper); margin-bottom: 10px; }
.office-card h3{ font-size: 1.4rem; margin-bottom: 14px; }
.office-address{ color: var(--text-muted); margin-bottom: 24px; font-size: 0.95rem; }
.office-meta{ display:grid; grid-template-columns: 1fr 1fr; gap: 16px; border-top: 1px solid var(--line); padding-top: 20px; }
.office-meta dt{ font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); margin-bottom: 4px; }
.office-meta dd{ font-size: 0.92rem; }
.office-meta dd a:hover{ color: var(--volt); }

/* ============================================================
   MILESTONES / TIMELINE
   ============================================================ */
.timeline{
  max-width: var(--container); margin: 0 auto;
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  position: relative;
}
.timeline::before{
  content:''; position:absolute; top: 10px; left:0; right:0; height:1px; background: var(--line);
}
.timeline-item{ position: relative; padding-top: 26px; }
.timeline-item::before{
  content:''; position: absolute; top: 6px; left:0; width:9px; height:9px; border-radius:50%;
  background: var(--volt); box-shadow: 0 0 0 4px rgba(143,209,79,0.15);
}
.timeline-date{ font-family: var(--font-mono); color: var(--copper); font-size: 0.85rem; margin-bottom: 10px; letter-spacing: 0.04em; }
.timeline-text{ color: var(--text-muted); font-size: 0.92rem; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact{ background: var(--bg-surface); }
.contact-inner{ max-width: 620px; margin: 0 auto; }
.contact h2{ font-size: clamp(1.7rem, 3vw, 2.3rem); margin-bottom: 14px; max-width: 20ch; }
.contact .section-lead{ margin-bottom: 40px; }
.contact-form{ display:flex; flex-direction:column; gap: 20px; }
.form-row{ display:flex; flex-direction:column; gap: 8px; }
.form-row label{ font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); }
.form-row input, .form-row select, .form-row textarea{
  background: var(--bg-surface-2); border: 1px solid var(--line); border-radius: 8px;
  padding: 12px 14px; color: var(--text-primary); font-family: var(--font-body); font-size: 0.98rem;
  transition: border-color 0.2s ease;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{
  outline: none; border-color: var(--volt);
}
.contact-form .btn{ align-self: flex-start; margin-top: 6px; border:none; }
.form-status{ font-family: var(--font-mono); font-size: 0.85rem; color: var(--volt); min-height: 1.2em; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{ background: var(--bg-void); border-top: 1px solid var(--line); padding: 60px 24px 26px; }
.footer-inner{
  max-width: var(--container); margin: 0 auto;
  display:grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px;
}
.footer-brand .brand-text{ margin-bottom: 14px; }
.footer-brand p{ color: var(--text-muted); font-size: 0.9rem; max-width: 32ch; }
.footer-heading{ font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--copper); margin-bottom: 12px; }
.footer-col p{ font-size: 0.92rem; color: var(--text-muted); margin-bottom: 6px; }
.footer-col a:hover{ color: var(--volt); }
.social-row{ display:flex; gap: 10px; }
.social-row a{
  width: 34px; height:34px; border-radius:50%; border: 1px solid var(--line);
  display:flex; align-items:center; justify-content:center; font-family: var(--font-mono);
  font-size: 0.7rem; text-transform: uppercase; color: var(--text-muted);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.social-row a:hover{ border-color: var(--volt); color: var(--volt); }
.footer-bottom{
  max-width: var(--container); margin: 40px auto 0; padding-top: 22px; border-top: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted);
}

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

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px){
  .hero-inner{ grid-template-columns: 1fr; }
  .hero-visual{ order: -1; }
  .stats-strip{ grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
  .stat:nth-child(3){ border-left:none; }
  .product-grid{ grid-template-columns: repeat(2, 1fr); }
  .sustainability{ grid-template-columns: 1fr; }
  .sustain-visual{ order: -1; }
  .global-grid{ grid-template-columns: 1fr; }
  .timeline{ grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .timeline::before{ display:none; }
  .footer-inner{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px){
  .main-nav{
    position: fixed; top: 68px; left: 0; right: 0; background: var(--bg-surface);
    flex-direction: column; align-items: flex-start; gap: 0; padding: 10px 24px 20px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform 0.3s ease; z-index: 90;
  }
  .main-nav.open{ transform: translateY(0); }
  .main-nav .nav-link{ width:100%; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-cta{ margin-top: 12px; text-align:center; }
  .nav-toggle{ display:flex; }
  .product-grid{ grid-template-columns: 1fr; }
  .timeline{ grid-template-columns: 1fr; }
  .office-meta{ grid-template-columns: 1fr; }
  .footer-inner{ grid-template-columns: 1fr; }
  section{ padding: 70px 20px; }
  .hero{ padding: 60px 20px 40px; }
}