/* =========================================================
   SEIKO INDUSTRIES — custom theme
   Void black / gunmetal base, four division brand accents,
   Orbitron display + Rajdhani body, hex-mesh sci-fi motif.
   ========================================================= */

:root{
  --void:        #05070a;
  --panel:       #0b0f14;
  --panel-2:     #12161c;
  --panel-3:     #191f27;
  --line:        rgba(217,222,226,0.10);
  --line-2:      rgba(217,222,226,0.18);

  --ink:         #e9edf0;
  --ink-dim:     #92a0ab;
  --ink-faint:   #565f68;

  --master:      #d9dee2;
  --works:       #f7941d;
  --security:    #e2223a;
  --logistics:   #0099ff;
  --technology:  #00c98a;

  --c: var(--master); /* live accent, overridden per-section */

  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;

  --nav-h: 84px;
  --ease: cubic-bezier(.16,.84,.44,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; overflow-x:hidden; }
body{
  margin:0;
  background:var(--void);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:18px;
  line-height:1.5;
  cursor:none;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3{ font-family:var(--font-display); margin:0; letter-spacing:0.02em; }
p{ margin:0 0 1em; color:var(--ink-dim); }
::selection{ background:var(--c); color:#05070a; }

@media (max-width:820px){
  body{ cursor:auto; font-size:16px; }
}

.eyebrow{
  font-family:var(--font-display);
  font-size:12px;
  font-weight:700;
  letter-spacing:0.32em;
  text-transform:uppercase;
  color:var(--c);
  margin:0 0 18px;
}

.section-title{
  font-size:clamp(2.2rem,5vw,3.6rem);
  font-weight:900;
  line-height:1.05;
  margin-bottom:24px;
}

/* ---------- background canvas & texture ---------- */
#bg-canvas{
  position:fixed; inset:0; width:100%; height:100%;
  z-index:0; background:var(--void);
}
.grain{
  position:fixed; inset:0; z-index:1; pointer-events:none;
  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");
}
main, header, footer{ position:relative; z-index:2; }

/* ---------- custom cursor ---------- */
.cursor-dot,.cursor-ring{
  position:fixed; top:0; left:0; z-index:999;
  pointer-events:none; border-radius:50%;
  transform:translate(-50%,-50%);
  transition:opacity .2s ease;
}
.cursor-dot{ width:6px; height:6px; background:var(--c); }
.cursor-ring{
  width:36px; height:36px; border:1px solid var(--c);
  transition:width .2s var(--ease), height .2s var(--ease), border-color .2s ease, opacity .2s ease, transform .05s linear;
}
.cursor-ring.is-active{ width:60px; height:60px; background:rgba(255,255,255,0.04); }
@media (max-width:820px){ .cursor-dot,.cursor-ring{ display:none; } }

/* ---------- preloader ---------- */
.preloader{
  position:fixed; inset:0; z-index:1000;
  background:var(--void);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:22px;
  transition:opacity .7s var(--ease), visibility .7s var(--ease);
}
.preloader.is-done{ opacity:0; visibility:hidden; }
.emblem--load{ width:90px; color:var(--master); animation:spin 3s linear infinite; }
.preloader-text{
  font-family:var(--font-display); letter-spacing:0.4em; font-size:13px; color:var(--ink-dim);
}
.preloader-bar{ width:220px; height:2px; background:var(--line); overflow:hidden; }
.preloader-bar span{ display:block; height:100%; width:0%; background:var(--master); box-shadow:0 0 12px var(--master); }
@keyframes spin{ to{ transform:rotate(360deg); } }

/* ---------- emblem (shared hex-ring component) ---------- */
.emblem{ position:relative; display:block; }
.emblem svg{ width:100%; height:100%; color:var(--c); filter:drop-shadow(0 0 10px color-mix(in srgb, var(--c) 55%, transparent)); }
.emblem-label{
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  text-align:center; font-family:var(--font-display); font-weight:700; color:var(--c);
  letter-spacing:0.04em; font-size:16px; padding:0 22%;
}
.emblem-lockup{
  margin-top:14px; font-family:var(--font-display); font-size:13px; letter-spacing:0.18em;
  color:var(--c); text-align:center;
}
.emblem-lockup .kana{ display:block; font-family:var(--font-body); font-size:13px; letter-spacing:0.1em; color:var(--ink-faint); margin-top:2px; }
.emblem--nav{ width:38px; }
.emblem--nav svg{ color:var(--master); filter:none; }
.emblem--hero{ width:min(46vw,460px); animation:spin-slow 40s linear infinite; }
.emblem--hero svg{ color:var(--master); }
.emblem--about{ width:180px; animation:spin-slow 30s linear infinite reverse; }
.emblem--about svg{ color:var(--master); }
.emblem--branch{ width:min(60vw,300px); margin:0 auto; }
@keyframes spin-slow{ to{ transform:rotate(360deg); } }

/* ---------- buttons ---------- */
.btn{
  --c: var(--c);
  position:relative; display:inline-flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-weight:700; font-size:13px; letter-spacing:0.14em; text-transform:uppercase;
  padding:16px 30px; border-radius:2px; border:1px solid var(--c); overflow:hidden;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), color .25s ease;
}
.btn::before{
  content:''; position:absolute; inset:0; background:var(--c); transform:scaleX(0); transform-origin:left;
  transition:transform .35s var(--ease); z-index:-1;
}
.btn--solid{ background:var(--master); color:var(--void); border-color:var(--master); }
.btn--solid::before{ background:var(--ink); }
.btn--outline{ color:var(--c); background:transparent; }
.btn--outline::before{ background:var(--c); }
.btn--outline:hover{ color:var(--void); }
.btn--ghost{ color:var(--ink); border-color:var(--line-2); font-size:12px; padding:11px 22px; }
.btn--ghost::before{ background:var(--master); }
.btn--ghost:hover{ color:var(--void); }
.btn--lg{ padding:20px 44px; font-size:14px; }
.btn:hover{ box-shadow:0 8px 30px -8px color-mix(in srgb, var(--c) 60%, transparent); }
.btn:hover::before{ transform:scaleX(1); }
.btn--solid:hover{ color:var(--void); }

/* ---------- nav ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  height:var(--nav-h); display:flex; align-items:center; justify-content:space-between;
  padding:0 clamp(20px,4vw,56px);
  background:transparent; border-bottom:1px solid transparent;
  transition:background .4s ease, border-color .4s ease, height .4s ease;
}
.nav.is-scrolled{
  height:66px; background:rgba(5,7,10,0.78); backdrop-filter:blur(14px);
  border-color:var(--line);
}
.nav-brand{ display:flex; align-items:center; gap:12px; }
.nav-brand-text{ font-family:var(--font-display); font-weight:700; font-size:15px; letter-spacing:0.08em; }
.nav-brand-text em{ font-style:normal; color:var(--ink-faint); font-weight:500; margin-left:6px; }
.nav-links{ display:flex; gap:34px; }
.nav-links a{
  position:relative; display:flex; align-items:center; gap:8px;
  font-family:var(--font-display); font-size:12px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--ink-dim); transition:color .25s ease;
}
.nav-links a i{ width:6px; height:6px; border-radius:50%; background:var(--ink-faint); transition:background .25s ease, box-shadow .25s ease; }
.nav-links a:hover, .nav-links a.is-active{ color:var(--ink); }
.nav-links a[data-accent="works"]:hover i, .nav-links a[data-accent="works"].is-active i{ background:var(--works); box-shadow:0 0 8px var(--works); }
.nav-links a[data-accent="security"]:hover i, .nav-links a[data-accent="security"].is-active i{ background:var(--security); box-shadow:0 0 8px var(--security); }
.nav-links a[data-accent="logistics"]:hover i, .nav-links a[data-accent="logistics"].is-active i{ background:var(--logistics); box-shadow:0 0 8px var(--logistics); }
.nav-links a[data-accent="technology"]:hover i, .nav-links a[data-accent="technology"].is-active i{ background:var(--technology); box-shadow:0 0 8px var(--technology); }
.nav-links a[data-accent="master"]:hover i, .nav-links a[data-accent="master"].is-active i{ background:var(--master); box-shadow:0 0 8px var(--master); }
.nav-ctas{ display:flex; align-items:center; gap:12px; }
.nav-cta{ --c:var(--master); }
.nav-cta--intra{ border-color:var(--line-2); color:var(--ink-dim); }
.nav-cta--intra::before{ background:var(--master); }
.nav-cta--intra:hover{ color:var(--void); }
.nav-burger{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:10px; z-index:120; }
.nav-burger span{ width:22px; height:2px; background:var(--ink); transition:transform .3s ease, opacity .3s ease; }

@media (max-width:980px){
  .nav-links{
    position:fixed; inset:0 0 0 auto; width:min(78vw,340px); height:100vh;
    background:var(--panel); flex-direction:column; justify-content:center; gap:28px; padding:40px;
    transform:translateX(100%); transition:transform .45s var(--ease); border-left:1px solid var(--line);
  }
  .nav-links.is-open{ transform:translateX(0); }
  .nav-ctas{ display:none; }
  .nav-burger{ display:flex; }
  .nav-burger.is-open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
  .nav-burger.is-open span:nth-child(2){ opacity:0; }
  .nav-burger.is-open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
}

/* ---------- hero ---------- */
.hero{
  min-height:100vh; display:flex; flex-direction:column; align-items:center; justify-content:center;
  position:relative; padding:calc(var(--nav-h) + 40px) 24px 160px; text-align:center; overflow:hidden;
}
.hero-inner{ max-width:920px; position:relative; z-index:2; }
.hero-title{ font-size:clamp(3rem,10vw,7.2rem); font-weight:900; line-height:0.96; margin:18px 0 28px; }
.hero-title .glitch{ display:block; position:relative; color:var(--ink); }
.glitch::before,.glitch::after{
  content:attr(data-text); position:absolute; inset:0; opacity:0; pointer-events:none;
}
.glitch.is-glitching::before{
  opacity:0.85; color:var(--security); transform:translate(-4px,-2px); clip-path:inset(0 0 55% 0);
}
.glitch.is-glitching::after{
  opacity:0.85; color:var(--logistics); transform:translate(4px,2px); clip-path:inset(55% 0 0 0);
}
.hero-sub{ max-width:640px; margin:0 auto 40px; font-size:19px; }
.hero-cta{ display:flex; gap:18px; justify-content:center; flex-wrap:wrap; }
.hero-emblem{
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); z-index:1;
  opacity:0.16; pointer-events:none;
}
.hero-stats{
  position:relative; z-index:2; margin-top:64px;
  display:flex; flex-wrap:wrap; gap:clamp(24px,4vw,56px); justify-content:center;
  padding-top:36px; border-top:1px solid var(--line); width:100%; max-width:980px;
}
.stat{ text-align:center; min-width:90px; }
.stat-num{ display:block; font-family:var(--font-display); font-size:clamp(1.6rem,3vw,2.4rem); font-weight:700; color:var(--ink); }
.stat-num::after{ content:'+'; color:var(--ink-faint); }
.stat-label{ font-size:11px; letter-spacing:0.16em; text-transform:uppercase; color:var(--ink-faint); }

.scroll-cue{
  position:absolute; bottom:32px; left:50%; transform:translateX(-50%); z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-family:var(--font-display); font-size:10px; letter-spacing:0.3em; text-transform:uppercase; color:var(--ink-faint);
}
.scroll-cue span{
  width:1px; height:34px; background:linear-gradient(var(--master),transparent);
  animation:scrollcue 1.8s ease-in-out infinite;
}
@keyframes scrollcue{ 0%{ transform:scaleY(0); opacity:0; transform-origin:top; } 40%{ transform:scaleY(1); opacity:1; transform-origin:top; } 60%{ transform-origin:bottom; opacity:1; } 100%{ transform:scaleY(0); transform-origin:bottom; opacity:0; } }

/* ---------- about ---------- */
.about{ position:relative; padding:180px 24px; overflow:hidden; }
.hex-grid-decor{
  position:absolute; inset:0; opacity:0.5; pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='97'%3E%3Cpath d='M28 0 56 16.16 56 48.5 28 64.66 0 48.5 0 16.16Z' fill='none' stroke='%23d9dee2' stroke-opacity='0.055' stroke-width='1'/%3E%3C/svg%3E");
  mask-image:radial-gradient(circle at 50% 40%, #000 0%, transparent 72%);
}
.about-inner{
  max-width:1200px; margin:0 auto; position:relative; z-index:1;
  display:grid; grid-template-columns:1.15fr 0.85fr; gap:80px; align-items:center;
}
.about-pillars{ margin-top:32px; display:grid; gap:14px; }
.pillar{
  display:flex; align-items:center; gap:12px; font-family:var(--font-display); font-size:13px;
  letter-spacing:0.08em; text-transform:uppercase; color:var(--ink-dim); padding:12px 16px;
  border:1px solid var(--line); background:rgba(255,255,255,0.015);
}
.pillar-dot{ width:8px; height:8px; background:var(--c); box-shadow:0 0 10px var(--c); flex-shrink:0; }
.about-visual{ display:flex; justify-content:center; }
.orbit-frame{ position:relative; width:min(60vw,340px); aspect-ratio:1; display:flex; align-items:center; justify-content:center; }
.orbit-ring{ position:absolute; border:1px solid var(--line-2); border-radius:50%; }
.orbit-ring--1{ inset:0; animation:spin-slow 26s linear infinite; border-style:dashed; }
.orbit-ring--2{ inset:14%; animation:spin-slow 18s linear infinite reverse; }
.orbit-ring--3{ inset:28%; animation:spin-slow 34s linear infinite; }

/* ---------- branch sections ---------- */
.branch{ position:relative; padding:160px 24px; overflow:hidden; --c:var(--master); }
.branch--works{ --c:var(--works); }
.branch--security{ --c:var(--security); }
.branch--logistics{ --c:var(--logistics); }
.branch--technology{ --c:var(--technology); }
.branch-bg{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(60% 55% at 18% 30%, color-mix(in srgb, var(--c) 20%, transparent), transparent 70%),
    radial-gradient(50% 50% at 90% 80%, color-mix(in srgb, var(--c) 12%, transparent), transparent 70%);
}
.branch--flip .branch-bg{
  background:
    radial-gradient(60% 55% at 82% 30%, color-mix(in srgb, var(--c) 20%, transparent), transparent 70%),
    radial-gradient(50% 50% at 10% 80%, color-mix(in srgb, var(--c) 12%, transparent), transparent 70%);
}
.branch-inner{
  position:relative; z-index:1; max-width:1240px; margin:0 auto;
  display:grid; grid-template-columns:0.8fr 1.2fr; gap:70px; align-items:center;
}
.branch--flip .branch-inner{ grid-template-columns:1.2fr 0.8fr; }
.branch--flip .branch-copy{ order:1; }
.branch--flip .branch-emblem-col{ order:2; }
.branch-title{ font-size:clamp(2.4rem,5.5vw,4.2rem); margin-bottom:6px; color:var(--ink); }
.branch-tagline{ color:var(--c); font-family:var(--font-display); font-size:16px; letter-spacing:0.06em; margin-bottom:24px; }

.service-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px; margin:32px 0 36px; }
.service-card{
  border:1px solid var(--line); background:rgba(255,255,255,0.02); padding:20px;
  transition:transform .3s var(--ease), border-color .3s ease, background .3s ease;
  transform-style:preserve-3d; will-change:transform;
}
.service-card:hover{ border-color:color-mix(in srgb, var(--c) 55%, var(--line)); background:rgba(255,255,255,0.035); }
.service-icon{ display:block; font-size:22px; color:var(--c); margin-bottom:10px; }
.service-card h3{ font-size:14px; letter-spacing:0.04em; margin-bottom:6px; color:var(--ink); }
.service-card p{ font-size:14px; margin:0; color:var(--ink-dim); }
.service-grid li:nth-child(5){ grid-column:1 / -1; }

/* ---------- join ---------- */
.join{ position:relative; padding:180px 24px; text-align:center; overflow:hidden; }
.join-inner{ max-width:980px; margin:0 auto; position:relative; z-index:1; }
.join-sub{ max-width:600px; margin:0 auto 60px; font-size:18px; }
.join-steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:70px; text-align:left; }
.join-step{ border:1px solid var(--line); padding:26px 22px; background:rgba(255,255,255,0.02); }
.join-step-num{ font-family:var(--font-display); font-size:12px; color:var(--master); letter-spacing:0.2em; }
.join-step h3{ font-size:18px; margin:10px 0 8px; }
.join-step p{ font-size:14px; margin:0; }
.join-tracks{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:56px; }
.track-card{
  --c: var(--c);
  display:flex; align-items:center; justify-content:center; padding:26px 10px;
  font-family:var(--font-display); font-size:13px; letter-spacing:0.14em; text-transform:uppercase;
  border:1px solid var(--line); color:var(--ink-dim);
  transition:all .3s var(--ease);
}
.track-card:hover{ color:var(--c); border-color:var(--c); box-shadow:0 0 24px -6px color-mix(in srgb, var(--c) 60%, transparent); transform:translateY(-4px); }

/* ---------- footer ---------- */
.footer{ border-top:1px solid var(--line); padding:56px 24px 32px; }
.footer-inner{ max-width:1240px; margin:0 auto; display:flex; flex-wrap:wrap; gap:36px; justify-content:space-between; align-items:flex-start; }
.footer-brand{ display:flex; align-items:center; gap:12px; }
.footer-links{ display:flex; gap:24px; flex-wrap:wrap; }
.footer-links a{ font-family:var(--font-display); font-size:12px; letter-spacing:0.1em; text-transform:uppercase; color:var(--ink-dim); }
.footer-links a:hover{ color:var(--ink); }
.footer-meta{ text-align:right; max-width:420px; }
.footer-meta p{ margin:0 0 6px; font-size:13px; }
.footer-disclaimer{ font-size:11px; color:var(--ink-faint); line-height:1.5; }

/* ---------- reveal animations (JS toggles .in-view) ---------- */
.reveal, .reveal-line span{
  opacity:0; transform:translateY(36px);
  transition:opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal-line{ overflow:hidden; display:block; }
.reveal-line span{ display:block; }
.reveal.in-view, .reveal-line.in-view span{ opacity:1; transform:translateY(0); }
.service-grid .service-card.reveal{ transition-delay:calc(var(--i,0) * 70ms); }

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .about-inner, .branch-inner{ grid-template-columns:1fr; text-align:center; }
  .branch--flip .branch-copy, .branch--flip .branch-emblem-col{ order:initial; }
  .about-visual{ order:-1; }
  .pillar{ justify-content:center; }
  .service-grid{ text-align:left; }
  .join-steps, .join-tracks{ grid-template-columns:repeat(2,1fr); }
  .footer-inner{ justify-content:center; text-align:center; }
  .footer-meta{ text-align:center; margin:0 auto; }
}
@media (max-width:600px){
  .hero-stats{ gap:22px 34px; }
  .join-steps, .join-tracks{ grid-template-columns:1fr; }
  .service-grid{ grid-template-columns:1fr; }
  .service-grid li:nth-child(5){ grid-column:auto; }
  .branch{ padding:110px 20px; }
  .about{ padding:110px 20px; }
}