/* ================================
   ARC INDUSTRIES — MAIN STYLESHEET
   ================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg:        #080C14;
  --bg-raised: #0D1320;
  --bg-card:   #111827;
  --border:    rgba(255,255,255,0.07);
  --border-md: rgba(255,255,255,0.12);
  --accent:    #2C7EF8;
  --accent-glow: rgba(44,126,248,0.25);
  --white:     #F8FAFC;
  --muted:     #8B95A7;
  --faint:     #3A4455;
  --radius:    12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 48px; height: 64px;
  background: rgba(8,12,20,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.logo { display: flex; align-items: center; }
.logo img { height: 44px; width: auto; }

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a {
  font-size: 14px; color: var(--muted); font-weight: 450;
  letter-spacing: 0.01em; transition: color 0.15s;
}
.site-nav a:hover, .site-nav a.active { color: var(--white); }
.nav-cta {
  font-size: 13px; font-weight: 600;
  padding: 8px 18px;
  background: var(--accent); color: #fff !important;
  border-radius: 8px;
  transition: opacity 0.15s, transform 0.15s;
}
.nav-cta:hover { opacity: 0.88; transform: translateY(-1px); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: all 0.25s;
}

.hero {
  min-height: calc(100vh - 64px);
  display: flex; align-items: center;
  padding: 80px 48px 80px;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 65% 65% at 70% 35%, rgba(44,126,248,0.13) 0%, transparent 65%),
    radial-gradient(ellipse 35% 45% at 15% 75%, rgba(44,126,248,0.06) 0%, transparent 55%);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0; opacity: 0.03;
  background-image: linear-gradient(rgba(255,255,255,1) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,1) 1px, transparent 1px);
  background-size: 64px 64px;
}
.hero-content { position: relative; z-index: 1; max-width: 780px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent);
  border: 1px solid rgba(44,126,248,0.28);
  padding: 5px 13px; border-radius: 100px; margin-bottom: 28px;
}
.eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  animation: blink 2.2s ease-in-out infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.35} }

h1 {
  font-size: clamp(42px, 6vw, 76px);
  font-weight: 800; line-height: 1.06;
  letter-spacing: -0.03em; color: var(--white);
  margin-bottom: 22px;
}
h1 em { font-style: normal; color: var(--accent); }

.hero-sub {
  font-size: 19px; line-height: 1.65;
  color: var(--muted); max-width: 560px;
  font-weight: 400; margin-bottom: 36px;
}

.btn-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 15px; font-weight: 600;
  padding: 13px 24px; border-radius: 10px;
  cursor: pointer; transition: all 0.15s;
}
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 0 0 rgba(44,126,248,0);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 28px var(--accent-glow);
}
.btn-ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border-md);
}
.btn-ghost:hover { color: var(--white); border-color: rgba(255,255,255,0.25); }

.hero-stats {
  display: flex; gap: 40px; flex-wrap: wrap;
  margin-top: 60px; padding-top: 36px;
  border-top: 1px solid var(--border);
}
.stat-n {
  font-size: 30px; font-weight: 700;
  letter-spacing: -0.03em; color: var(--white); margin-bottom: 3px;
}
.stat-l { font-size: 13px; color: var(--muted); }

section { padding: 96px 48px; }
section.raised { background: var(--bg-raised); }
section.dark   { background: var(--bg); }

.section-inner { max-width: 1100px; margin: 0 auto; }

.section-tag {
  display: block; margin-bottom: 14px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent);
}
h2 {
  font-size: clamp(26px, 3.5vw, 44px);
  font-weight: 700; letter-spacing: -0.025em; line-height: 1.15;
  color: var(--white); margin-bottom: 14px;
}
h3 { font-size: 17px; font-weight: 600; color: var(--white); margin-bottom: 10px; letter-spacing: -0.01em; }
.section-sub { font-size: 17px; color: var(--muted); line-height: 1.7; max-width: 520px; margin-bottom: 52px; }
p { color: var(--muted); line-height: 1.75; }

.card-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.card-grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.card-grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }

.card {
  background: var(--bg-raised); padding: 36px;
  transition: background 0.2s;
}
.card-grid-2 .card:hover { background: #131C30; }

.card-outline {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; background: var(--bg);
  position: relative; overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}
.card-outline::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity 0.3s;
}
.card-outline:hover { border-color: rgba(44,126,248,0.3); transform: translateY(-2px); }
.card-outline:hover::before { opacity: 1; }

.card-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(44,126,248,0.1); border: 1px solid rgba(44,126,248,0.2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 17px;
}
.card-num {
  font-size: 11px; font-weight: 700; color: var(--faint);
  letter-spacing: 0.1em; text-transform: uppercase;
  display: block; margin-bottom: 16px;
}

.pill-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border: 1px solid var(--border);
  border-radius: 100px; font-size: 14px; font-weight: 500;
  color: var(--muted); background: var(--bg-raised);
  transition: border-color 0.2s, color 0.2s;
}
.pill:hover { border-color: var(--accent); color: var(--white); }
.pill-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

.divider { height: 1px; background: var(--border); margin: 0; }

.pricing-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.pricing-card {
  border: 1px solid var(--border); border-radius: 16px;
  padding: 36px; background: var(--bg);
  display: flex; flex-direction: column;
  position: relative; overflow: hidden;
}
.pricing-card.featured {
  border-color: var(--accent);
  background: linear-gradient(160deg, rgba(44,126,248,0.06) 0%, var(--bg) 50%);
}
.pricing-badge {
  display: inline-block; font-size: 11px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); background: rgba(44,126,248,0.12);
  border: 1px solid rgba(44,126,248,0.2);
  padding: 4px 10px; border-radius: 100px;
  margin-bottom: 20px; align-self: flex-start;
}
.price-amount {
  font-size: 38px; font-weight: 800; letter-spacing: -0.04em;
  color: var(--white); line-height: 1;
}
.price-unit { font-size: 15px; font-weight: 400; color: var(--muted); }
.price-min { font-size: 13px; color: var(--faint); margin: 6px 0 18px; }
.price-desc { font-size: 14px; color: var(--muted); line-height: 1.65; margin-bottom: 24px; }
.price-divider { height: 1px; background: var(--border); margin: 20px 0; }
.feature-list { list-style: none; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.feature-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: var(--muted); }
.check { color: var(--accent); font-size: 12px; margin-top: 2px; flex-shrink: 0; }
.pricing-cta { margin-top: 28px; }

.sla-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.sla-table th { color: var(--muted); font-weight: 600; text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase; }
.sla-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--muted); }
.sla-table td:first-child { color: var(--white); }
.sla-table tr:last-child td { border-bottom: none; }
.sla-table tr:hover td { background: rgba(255,255,255,0.02); }

.faq { display: flex; flex-direction: column; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; max-width: 760px; }
.faq-item { background: var(--bg-raised); }
.faq-q { width: 100%; text-align: left; padding: 20px 24px; background: none; border: none; color: var(--white); font-size: 15px; font-weight: 500; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-q:hover { background: rgba(255,255,255,0.03); }
.faq-icon { color: var(--muted); font-size: 18px; flex-shrink: 0; transition: transform 0.2s; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a-inner { padding: 0 24px 20px; font-size: 14px; color: var(--muted); line-height: 1.7; }

.cta-banner { text-align: center; position: relative; overflow: hidden; }
.cta-banner-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 90% at 50% 100%, rgba(44,126,248,0.09) 0%, transparent 70%);
}
.cta-banner h2 { max-width: 600px; margin: 0 auto 16px; font-size: clamp(28px, 4vw, 52px); }
.cta-banner p { color: var(--muted); font-size: 17px; margin-bottom: 36px; }

.site-footer {
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  padding: 56px 48px 32px;
}
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-logo img { height: 40px; margin-bottom: 14px; }
.footer-desc { font-size: 13px; color: var(--muted); line-height: 1.7; max-width: 240px; }
.footer-col h4 { font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--white); margin-bottom: 16px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--muted); transition: color 0.15s; }
.footer-col ul li a:hover { color: var(--white); }
.footer-bottom { padding-top: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-copy { font-size: 12px; color: var(--faint); }

.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.contact-info h2 { margin-bottom: 16px; }
.contact-detail { display: flex; flex-direction: column; gap: 20px; margin: 36px 0; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-icon { font-size: 16px; margin-top: 2px; }
.contact-item-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); margin-bottom: 4px; }
.contact-item-val { font-size: 14px; color: var(--muted); line-height: 1.6; }
.contact-item-val a { color: var(--muted); transition: color 0.15s; }
.contact-item-val a:hover { color: var(--white); }

.form-card { background: var(--bg-raised); border: 1px solid var(--border); border-radius: 16px; padding: 40px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--white); margin-bottom: 7px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 11px 14px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; color: var(--white);
  font-family: inherit; font-size: 14px;
  transition: border-color 0.15s;
  outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--accent); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--faint); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.page-hero { padding: 80px 48px 64px; border-bottom: 1px solid var(--border); }
.page-hero-inner { max-width: 680px; }
.page-hero h1 { font-size: clamp(36px, 5vw, 60px); margin-bottom: 16px; }
.page-hero p { font-size: 18px; color: var(--muted); line-height: 1.7; }

.about-values { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.client-types { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
.client-tag {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px; border: 1px solid var(--border);
  border-radius: 10px; font-size: 14px; color: var(--muted);
  background: var(--bg);
}
.client-tag-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

.step-list { display: flex; flex-direction: column; gap: 0; }
.step { display: flex; gap: 20px; padding: 28px 0; border-bottom: 1px solid var(--border); }
.step:last-child { border-bottom: none; }
.step-num { font-size: 12px; font-weight: 700; color: var(--accent); letter-spacing: 0.08em; width: 32px; flex-shrink: 0; padding-top: 2px; }
.step h3 { margin-bottom: 6px; }
.step p { font-size: 14px; }

.service-category { margin-bottom: 0; padding: 36px 0; border-bottom: 1px solid var(--border); }
.service-category:last-child { border-bottom: none; }
.service-cat-header { margin-bottom: 20px; }
.service-cat-tag { font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; display: block; }
.service-cat-title { font-size: 20px; font-weight: 600; color: var(--white); margin-bottom: 6px; }
.service-cat-desc { font-size: 14px; color: var(--muted); }
.tool-card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.tool-card { padding: 16px 20px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); transition: border-color 0.2s; }
.tool-card:hover { border-color: rgba(44,126,248,0.3); }
.tool-card-name { font-size: 14px; font-weight: 600; color: var(--white); margin-bottom: 4px; }
.tool-card-desc { font-size: 12px; color: var(--muted); line-height: 1.5; }

@media (max-width: 900px) {
  .site-header { padding: 0 24px; }
  .site-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #0D1320; border-bottom: 1px solid var(--border); padding: 16px 24px 24px; gap: 16px; }
  .site-nav.open { display: flex; }
  .site-nav a { font-size: 16px; }
  .nav-toggle { display: flex; }
  .hero { padding: 60px 24px; }
  h1 { font-size: clamp(36px, 8vw, 56px); }
  .hero-stats { gap: 24px; }
  section { padding: 64px 24px; }
  .card-grid-2, .card-grid-3, .card-grid-4 { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-values, .client-types { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero { padding: 60px 24px 48px; }
}
@media (max-width: 600px) {
  .footer-top { grid-template-columns: 1fr; }
  .tool-card-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { flex-direction: column; gap: 20px; }
}