/* =========================================================
   GNBelectric d.o.o. — stylesheet
   ========================================================= */

:root {
  --navy-900: #0f1c28;
  --navy-800: #16283a;
  --navy-700: #1e3348;
  --navy-600: #28425a;

  --bg: #eef2f6;
  --surface: #ffffff;
  --surface-alt: #e3e9ee;

  --text: #1b2733;
  --text-muted: #57697a;
  --text-inverse: #eef2f6;
  --text-inverse-muted: #aebccb;

  --accent: #f2a71b;
  --accent-dark: #d68f0e;
  --accent-2: #2f6fed;

  --border: #d7dee4;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 10px 30px rgba(15, 28, 40, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 28, 40, 0.16);

  --container: 1180px;
  --header-h: 84px;
}

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

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
  font-family: 'Poppins', 'Inter', sans-serif;
  color: var(--navy-900);
  line-height: 1.25;
  margin: 0 0 .5em;
}

p { margin: 0 0 1em; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Preloader ---------- */
#preloader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--navy-900);
  display: flex; align-items: center; justify-content: center;
  transition: opacity .5s ease, visibility .5s ease;
}
#preloader.hidden { opacity: 0; visibility: hidden; }
.loader-bolt { font-size: 2.5rem; color: var(--accent); animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 0%,100%{transform:scale(1);opacity:1;} 50%{transform:scale(1.25);opacity:.6;} }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-lg { padding: 16px 32px; font-size: 1rem; }

.btn-accent { background: var(--accent); color: var(--navy-900); box-shadow: 0 10px 24px rgba(242,167,27,.35); }
.btn-accent:hover { background: var(--accent-dark); box-shadow: 0 14px 30px rgba(242,167,27,.45); }

.btn-outline { border-color: rgba(238,242,246,.4); color: var(--text-inverse); }
.btn-outline:hover { background: rgba(238,242,246,.12); border-color: rgba(238,242,246,.7); }

/* ---------- Header ---------- */
#header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(15, 28, 40, 0.0);
  transition: background .3s ease, height .3s ease, box-shadow .3s ease;
}
#header.scrolled {
  background: rgba(15, 28, 40, 0.96);
  backdrop-filter: blur(8px);
  height: 68px;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--accent); color: var(--navy-900);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.logo-text {
  font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 1.25rem;
  color: var(--text-inverse); display: flex; flex-direction: column; line-height: 1;
}
.logo-text span { color: var(--accent); }
.logo-text small { font-weight: 500; font-size: .55rem; letter-spacing: .12em; color: var(--text-inverse-muted); margin-top: 3px; }

.main-nav ul { display: flex; gap: 34px; }
.nav-link {
  color: var(--text-inverse-muted); font-weight: 500; font-size: .95rem;
  position: relative; padding: 6px 0; transition: color .2s ease;
}
.nav-link::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--accent); transition: width .25s ease;
}
.nav-link:hover, .nav-link.active { color: var(--text-inverse); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 22px; }

.lang-switch {
  display: flex; align-items: center; gap: 2px;
  background: rgba(238,242,246,.08); border: 1px solid rgba(238,242,246,.18);
  border-radius: 999px; padding: 3px;
}
.lang-btn {
  background: none; border: none; color: var(--text-inverse-muted);
  font-weight: 600; font-size: .78rem; letter-spacing: .03em;
  padding: 6px 12px; border-radius: 999px; transition: background .2s ease, color .2s ease;
}
.lang-btn:hover { color: var(--text-inverse); }
.lang-btn.active { background: var(--accent); color: var(--navy-900); }
.header-phone { display: flex; align-items: center; gap: 8px; color: var(--text-inverse); font-weight: 600; font-size: .92rem; }
.header-phone i { color: var(--accent); }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 38px; height: 38px; background: none; border: none; padding: 0;
}
.nav-toggle span { display: block; height: 2px; width: 100%; background: var(--text-inverse); border-radius: 2px; transition: transform .3s ease, opacity .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  min-height: 100vh;
  display: flex; align-items: center;
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  padding-top: var(--header-h);
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.circuit-svg { width: 100%; height: 100%; }
.hero-inner { position: relative; z-index: 1; padding-top: 60px; padding-bottom: 60px; }

.eyebrow {
  color: var(--accent); font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; font-size: .85rem; margin-bottom: 18px;
}
.hero h1 {
  color: var(--text-inverse);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  max-width: 800px;
  margin-bottom: 22px;
}
.hero-lead {
  color: var(--text-inverse-muted);
  font-size: 1.15rem; max-width: 640px; margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 60px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(3, auto);
  gap: 40px; border-top: 1px solid rgba(238,242,246,.15); padding-top: 34px;
  max-width: 780px;
}
.hero-stat { display: flex; flex-direction: column; gap: 10px; }
.hero-stat i { font-size: 1.6rem; color: var(--accent); }
.hero-stat span { color: var(--text-inverse); font-size: .92rem; font-weight: 600; }

.scroll-cue {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  width: 28px; height: 44px; border: 2px solid rgba(238,242,246,.4); border-radius: 20px;
  z-index: 1;
}
.scroll-cue span {
  position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
  animation: scrollCue 1.6s ease infinite;
}
@keyframes scrollCue { 0%{opacity:1;top:8px;} 80%{opacity:0;top:26px;} 100%{opacity:0;top:8px;} }

/* ---------- Sections ---------- */
.section { padding: 110px 0; }
.section-alt { background: var(--surface-alt); }

.section-head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section-tag {
  color: var(--accent-dark); font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; font-size: .82rem; margin-bottom: 10px;
}
.section-head h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); }
.section-desc { color: var(--text-muted); font-size: 1.05rem; }
.section-head.light .section-tag { color: var(--accent); }
.section-head.light h2 { color: var(--text-inverse); }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: start; }
.about-text p { color: var(--text-muted); font-size: 1.02rem; }
.about-text strong { color: var(--navy-900); }

.about-values { margin-top: 30px; display: flex; flex-direction: column; gap: 22px; }
.value-item { display: flex; gap: 18px; }
.value-item i { color: var(--accent); font-size: 1.4rem; margin-top: 4px; flex-shrink: 0; width: 30px; }
.value-item h4 { margin-bottom: 4px; font-size: 1.05rem; }
.value-item p { color: var(--text-muted); margin: 0; font-size: .95rem; }

.about-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px; box-shadow: var(--shadow); transition: transform .25s ease, box-shadow .25s ease;
}
.panel-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.panel-card i { color: var(--accent-2); font-size: 1.6rem; margin-bottom: 12px; }
.panel-card h4 { font-size: 1rem; margin-bottom: 6px; }
.panel-card p { font-size: .88rem; color: var(--text-muted); margin: 0; }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 26px; box-shadow: var(--shadow);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.service-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(145deg, var(--navy-800), var(--navy-700));
  color: var(--accent); display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 20px;
}
.service-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.service-card p { color: var(--text-muted); font-size: .92rem; margin: 0; }

/* ---------- Why us (dark) ---------- */
.why-section {
  background: linear-gradient(160deg, var(--navy-900), var(--navy-800));
}
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.why-item {
  background: rgba(238,242,246,.04); border: 1px solid rgba(238,242,246,.1);
  border-radius: var(--radius); padding: 30px 26px; text-align: center;
  transition: background .25s ease, transform .25s ease;
}
.why-item:hover { background: rgba(238,242,246,.08); transform: translateY(-4px); }
.why-item i { font-size: 1.8rem; color: var(--accent); margin-bottom: 14px; }
.why-item h4 { color: var(--text-inverse); font-size: 1.05rem; margin-bottom: 8px; }
.why-item p { color: var(--text-inverse-muted); font-size: .9rem; margin: 0; }

/* ---------- Team ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-grid.team-grid-single { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
.team-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 20px; text-align: center; box-shadow: var(--shadow);
  transition: transform .3s ease, box-shadow .3s ease, opacity .3s ease;
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.team-license {
  margin-top: 10px; padding-top: 14px; border-top: 1px solid var(--border);
  font-size: .85rem; color: var(--text-muted);
}

.team-linkedin {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 14px; font-size: .82rem; font-weight: 600; color: var(--accent-2);
}
.team-linkedin:hover { text-decoration: underline; }

.team-avatar {
  width: 78px; height: 78px; border-radius: 50%; margin: 0 auto 16px;
  background: linear-gradient(145deg, var(--c1, var(--accent)), var(--c2, var(--accent-dark)));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 1.3rem;
}
.team-card h4 { font-size: 1.02rem; margin-bottom: 4px; }
.team-role { color: var(--text-muted); font-size: .85rem; margin: 0; }

/* ---------- Industries ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.industry-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 14px; text-align: center; transition: transform .25s ease, box-shadow .25s ease;
}
.industry-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.industry-item i { font-size: 1.6rem; color: var(--accent-2); margin-bottom: 12px; }
.industry-item span { display: block; font-weight: 600; font-size: .9rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--accent); }
.cta-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 48px 24px; flex-wrap: wrap;
}
.cta-inner h3 { color: var(--navy-900); margin-bottom: 6px; font-size: 1.5rem; }
.cta-inner p { color: rgba(15,28,40,.75); margin: 0; }
.cta-band .btn-accent { background: var(--navy-900); color: var(--text-inverse); box-shadow: none; }
.cta-band .btn-accent:hover { background: var(--navy-800); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.3fr .9fr; gap: 50px; align-items: start; }
.contact-form {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 40px; box-shadow: var(--shadow);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; display: flex; flex-direction: column; }
.form-group label { font-weight: 600; font-size: .88rem; margin-bottom: 8px; }
.form-group input, .form-group select, .form-group textarea {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px 14px; font-family: inherit; font-size: .95rem; background: var(--bg);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent-2); box-shadow: 0 0 0 3px rgba(47,111,237,.15);
}
.form-group.invalid input, .form-group.invalid textarea { border-color: #e0483d; }
.form-error { color: #e0483d; font-size: .8rem; min-height: 1.1em; margin-top: 4px; }
.contact-form textarea { resize: vertical; }
.form-success {
  margin-top: 16px; color: #1c8a5f; font-weight: 600; font-size: .92rem;
  opacity: 0; transform: translateY(6px); transition: all .3s ease;
}
.form-success.show { opacity: 1; transform: translateY(0); }

.contact-info { display: flex; flex-direction: column; gap: 16px; }
.info-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 22px; display: flex; gap: 16px; align-items: flex-start; box-shadow: var(--shadow);
}
.info-card i { color: var(--accent-2); font-size: 1.2rem; margin-top: 3px; }
.info-card h4 { font-size: .95rem; margin-bottom: 4px; }
.info-card p { margin: 0; color: var(--text-muted); font-size: .9rem; }

.map-placeholder {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 30px 20px; text-align: center; color: var(--text-muted);
  background: var(--surface-alt);
}
.map-placeholder i { font-size: 1.8rem; color: var(--accent-2); margin-bottom: 10px; }
.map-placeholder p { margin: 0; font-size: .85rem; }

.social-links { display: flex; gap: 12px; }
.social-links a {
  width: 42px; height: 42px; border-radius: 50%; background: var(--navy-900); color: var(--text-inverse);
  display: flex; align-items: center; justify-content: center; transition: background .2s ease, transform .2s ease;
}
.social-links a:hover { background: var(--accent); color: var(--navy-900); transform: translateY(-3px); }

/* ---------- Footer ---------- */
.footer { background: var(--navy-900); color: var(--text-inverse-muted); padding-top: 70px; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer-brand p { font-size: .9rem; margin-top: 14px; }
.footer-col h5 { color: var(--text-inverse); font-size: 1rem; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; font-size: .9rem; }
.footer-col ul a { transition: color .2s ease; }
.footer-col ul a:hover { color: var(--accent); }
.footer-col ul li { display: flex; gap: 10px; align-items: flex-start; }
.footer-col ul i { color: var(--accent); margin-top: 3px; }

.footer-bottom { border-top: 1px solid rgba(238,242,246,.1); padding: 22px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .82rem; }

/* ---------- Back to top ---------- */
#backToTop {
  position: fixed; bottom: 28px; right: 28px; z-index: 900;
  width: 46px; height: 46px; border-radius: 50%; border: none;
  background: var(--navy-900); color: var(--accent);
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all .3s ease; box-shadow: var(--shadow-lg);
}
#backToTop.show { opacity: 1; visibility: visible; transform: translateY(0); }
#backToTop:hover { background: var(--accent); color: var(--navy-900); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1080px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(3, 1fr); }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-panel { order: -1; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .main-nav { position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: var(--navy-900);
    transform: translateX(100%); transition: transform .35s ease; overflow-y: auto; padding: 30px 0; }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 0; align-items: center; }
  .main-nav ul li { width: 100%; text-align: center; }
  .nav-link { display: block; padding: 16px 0; font-size: 1.05rem; }
  .header-phone { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn { display: none; }
}

@media (max-width: 720px) {
  .section { padding: 76px 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .services-grid, .team-grid { grid-template-columns: 1fr 1fr; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; text-align: center; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-col ul li { justify-content: center; }
  .value-item { text-align: left; }
}

@media (max-width: 480px) {
  .services-grid, .team-grid, .industry-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .contact-form { padding: 26px; }
}