/* ================================================
   EUTAXIS — Global Stylesheet
   AI-first Business Process Optimisation
   ================================================ */

/* ---------- Design Tokens ---------- */
:root {
  --clr-bg:         #FAFAFA;
  --clr-surface:    #FFFFFF;
  --clr-primary:    #1A3A5C;
  --clr-accent:     #2E9CCA;
  --clr-accent-2:   #5EC4B0;
  --clr-text:       #1C2B3A;
  --clr-muted:      #6B7E93;
  --clr-border:     #E0E8F0;
  --clr-cta:        #2E9CCA;
  --clr-cta-hover:  #1A7BA8;

  --font-head: 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-card: 0 4px 24px rgba(26, 58, 92, 0.08);
  --shadow-btn:  0 2px 12px rgba(46, 156, 202, 0.3);

  --max-w: 1100px;
  --nav-h: 68px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-primary);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; }
p { color: var(--clr-text); margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
.lead { font-size: 1.2rem; color: var(--clr-muted); line-height: 1.8; }

/* ---------- Layout ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
section { padding: 80px 0; }
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 12px;
}
.section-header { max-width: 640px; margin-bottom: 56px; }
.section-header p { color: var(--clr-muted); font-size: 1.1rem; margin-top: 12px; }

/* ---------- Navigation ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--clr-primary);
  letter-spacing: -0.02em;
}
.nav-logo .logo-mark {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #2E9CCA 0%, #3FA5C8 30%, #5EC4B0 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.5rem;
}
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--clr-muted); transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--clr-primary); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; border: none; background: none; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--clr-primary); border-radius: 2px; transition: all 0.3s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}
.btn-primary { background: var(--clr-cta); color: #fff; box-shadow: var(--shadow-btn); }
.btn-primary:hover { background: var(--clr-cta-hover); transform: translateY(-2px); box-shadow: 0 4px 20px rgba(46,156,202,0.4); }
.btn-outline { background: transparent; color: var(--clr-primary); border: 2px solid var(--clr-border); }
.btn-outline:hover { border-color: var(--clr-accent); color: var(--clr-accent); }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-white { background: #fff; color: var(--clr-primary); }
.btn-white:hover { background: #f0f8ff; }

/* ---------- Cards ---------- */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(26,58,92,0.12); }
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.card-icon.blue  { background: rgba(46,156,202,0.12); }
.card-icon.mint  { background: rgba(94,196,176,0.12); }
.card-icon.navy  { background: rgba(26,58,92,0.08); }

/* ---------- Grid ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; align-items: center; }

/* ---------- Page Hero ---------- */
.page-hero {
  background: linear-gradient(160deg, var(--clr-primary) 0%, #1e4a74 100%);
  padding: 100px 0 80px;
  color: #fff;
}
.page-hero h1 { color: #fff; }
.page-hero .lead { color: rgba(255,255,255,0.75); }

/* ---------- Divider ---------- */
.divider {
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-2));
  border-radius: 2px;
  margin: 20px 0 28px;
}

/* ---------- Tag ---------- */
.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(46,156,202,0.12);
  color: var(--clr-accent);
}

/* ---------- Tool Badge ---------- */
.tools-strip { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.tool-badge {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-muted);
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 6px;
  padding: 6px 14px;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #1e4a74 100%);
  border-radius: var(--radius-lg);
  padding: 64px 56px;
  text-align: center;
  color: #fff;
}
.cta-banner h2 { color: #fff; margin-bottom: 16px; }
.cta-banner p  { color: rgba(255,255,255,0.75); font-size: 1.1rem; margin-bottom: 32px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--clr-primary); color: rgba(255,255,255,0.6); padding: 48px 0 32px; }
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-brand .nav-logo { color: #fff; margin-bottom: 10px; }
.footer-brand p { color: rgba(255,255,255,0.5); font-size: 0.9rem; max-width: 260px; }
.footer-links h4 { color: #fff; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 14px; }
.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: rgba(255,255,255,0.5); font-size: 0.9rem; transition: color 0.2s; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  max-width: var(--max-w);
  margin: 32px auto 0;
  padding: 20px 24px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.82rem;
}

/* ---------- Form ---------- */
.form-group { margin-bottom: 20px; }
label { display: block; font-size: 0.9rem; font-weight: 600; color: var(--clr-primary); margin-bottom: 6px; }
input, textarea, select {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--clr-text);
  background: var(--clr-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(46,156,202,0.15);
}
textarea { min-height: 140px; resize: vertical; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
}
@media (max-width: 640px) {
  .grid-3 { grid-template-columns: 1fr; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--clr-border);
    padding: 20px 24px 28px;
    gap: 18px;
  }
  .cta-banner { padding: 40px 24px; }
  section { padding: 48px 0; }
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.text-accent  { color: var(--clr-accent); }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-0  { margin-bottom: 0; }

/* ---------- Process Steps ---------- */
.steps { display: flex; flex-direction: column; gap: 0; }
.step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding: 32px 0;
  border-bottom: 1px solid var(--clr-border);
}
.step:last-child { border-bottom: none; }
.step-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-2));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-content h3 { margin-bottom: 6px; }
.step-content p  { color: var(--clr-muted); margin: 0; }