/* E&E Solutions — Global Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Colors */
  --bg:        #F7F7F8;
  --bg-card:   #FFFFFF;
  --bg-dark:   #0D0F14;
  --fg:        #0D0F14;
  --fg-muted:  #6B7280;
  --fg-light:  #9CA3AF;
  --border:    #E5E7EB;
  --border-dark: #1F2937;

  --accent:    oklch(58% 0.22 248);
  --accent-hover: oklch(52% 0.22 248);
  --accent-soft:  oklch(96% 0.05 248);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-pad: clamp(64px, 10vw, 120px);
  --page-max: 1160px;
  --page-gutter: clamp(20px, 5vw, 48px);

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

/* ── Layout ── */
.container {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}

section { padding: var(--section-pad) 0; }

/* ── Typography ── */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--fg);
}
h1 { font-size: clamp(36px, 5.5vw, 72px); font-weight: 800; }
h2 { font-size: clamp(28px, 3.5vw, 48px); }
h3 { font-size: clamp(20px, 2.5vw, 28px); }
h4 { font-size: 18px; }

p { color: var(--fg-muted); line-height: 1.75; }
a { color: inherit; text-decoration: none; }

.label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-light);
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 16px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--r-sm);
  cursor: pointer;
  border: none;
  transition: all 0.18s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--fg);
  color: #fff;
  padding: 12px 24px;
}
.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  padding: 14px 28px;
  font-size: 16px;
}
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px oklch(58% 0.22 248 / 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--fg);
  padding: 12px 24px;
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--fg);
  background: var(--fg);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--fg-muted);
  padding: 12px 0;
  font-size: 14px;
  font-weight: 500;
}
.btn-ghost:hover { color: var(--fg); }
.btn-ghost svg { transition: transform 0.15s; }
.btn-ghost:hover svg { transform: translateX(3px); }

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(247, 247, 248, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 60px;
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}

.nav-logo {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.03em;
  color: var(--fg);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-mark {
  width: 28px; height: 28px;
  background: var(--fg);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-muted);
  transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); }

.nav-cta { display: flex; align-items: center; gap: 12px; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: all 0.2s;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 60px; left: 0; right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 16px var(--page-gutter) 24px;
  z-index: 99;
  flex-direction: column;
  gap: 8px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--fg-muted);
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--fg); }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ── Chips ── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ── Section headings ── */
.section-head {
  max-width: 600px;
  margin-bottom: 56px;
}
.section-head h2 { margin-bottom: 16px; }
.section-head p { font-size: 18px; line-height: 1.7; }

/* ── Divider ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
}
.form-input,
.form-textarea,
.form-select {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--fg);
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color 0.15s;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-select { appearance: none; cursor: pointer; }

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  background: var(--fg);
  color: #fff;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.badge-accent {
  background: var(--accent);
}

/* ── Footer ── */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.5);
  padding: 64px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer-brand { }
.footer-logo {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.03em;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.footer-logo-mark {
  width: 28px; height: 28px;
  background: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}
.footer-tagline {
  font-size: 14px;
  line-height: 1.6;
  max-width: 240px;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  transition: color 0.15s;
}
.footer-col ul a:hover { color: rgba(255,255,255,0.85); }
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}
.footer-bottom a { color: rgba(255,255,255,0.45); }
.footer-bottom a:hover { color: rgba(255,255,255,0.85); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Page header (inner pages) ── */
.page-hero {
  padding-top: calc(60px + 80px);
  padding-bottom: 64px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { margin-bottom: 16px; }
.page-hero p { font-size: 20px; max-width: 580px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}