/* Sentisys public site — clean light corporate theme */

:root {
  --color-primary: #0b5fff;
  --color-primary-dark: #0847c4;
  --color-ink: #111827;
  --color-body: #374151;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f9fc;
  --color-success: #16a34a;
  --color-amber: #d97706;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(17, 24, 39, 0.08), 0 1px 2px rgba(17, 24, 39, 0.06);
  --shadow-lg: 0 10px 25px rgba(17, 24, 39, 0.08);
  --max-width: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-body);
  background: var(--color-bg);
  line-height: 1.6;
}

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

h1, h2, h3, h4 {
  color: var(--color-ink);
  line-height: 1.25;
  margin: 0 0 16px;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.85rem; }
h3 { font-size: 1.3rem; }

p { margin: 0 0 16px; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

ul { padding-left: 1.2em; }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-bg-alt); }
.btn-block { display: block; width: 100%; text-align: center; }

/* ---- Header / Nav ---- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(6px);
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--color-ink); }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.brand-name { font-size: 1.15rem; letter-spacing: -0.01em; }

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav ul { list-style: none; display: flex; gap: 24px; margin: 0; padding: 0; }
.site-nav a { color: var(--color-body); font-weight: 500; }
.site-nav a:hover { color: var(--color-primary); text-decoration: none; }
.site-nav a.active { color: var(--color-primary); }
.nav-cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--color-ink); display: block; }

/* ---- Hero ---- */
.hero {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  padding: 80px 0;
  border-bottom: 1px solid var(--color-border);
}
.hero-inner { max-width: 720px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  display: block;
}
.hero p.lead { font-size: 1.2rem; color: var(--color-muted); }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; }

/* ---- Sections ---- */
.section { padding: 72px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-header { max-width: 640px; margin-bottom: 40px; }
.section-header p { color: var(--color-muted); }

/* ---- Cards / Grids ---- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--color-muted); margin-bottom: 0; }

.icon-badge {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: #eaf1ff;
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  font-weight: 700;
}

.stat-row { display: flex; gap: 48px; flex-wrap: wrap; margin: 32px 0; }
.stat-item .stat-number { font-size: 2.2rem; font-weight: 700; color: var(--color-primary); }
.stat-item .stat-label { color: var(--color-muted); font-size: 0.9rem; }

/* ---- Case studies / blog list ---- */
.post-card { border-bottom: 1px solid var(--color-border); padding: 28px 0; }
.post-card:first-child { padding-top: 0; }
.post-meta { color: var(--color-muted); font-size: 0.85rem; margin-bottom: 8px; }
.tag {
  display: inline-block;
  background: #eaf1ff;
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

/* ---- Forms ---- */
.form-group { margin-bottom: 20px; }
label { display: block; font-weight: 600; margin-bottom: 6px; color: var(--color-ink); font-size: 0.9rem; }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  color: var(--color-ink);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 95, 255, 0.15);
}
textarea { resize: vertical; min-height: 130px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.honeypot-field { position: absolute; left: -9999px; top: -9999px; }

/* ---- Alerts ---- */
.alert { padding: 14px 18px; border-radius: var(--radius); margin-bottom: 20px; font-size: 0.95rem; }
.alert-success { background: #ecfdf3; color: #116932; border: 1px solid #b6f0c9; }
.alert-error { background: #fef2f2; color: #a12626; border: 1px solid #fac9c9; }
.alert-info { background: #eaf1ff; color: var(--color-primary-dark); border: 1px solid #c8dbff; }

/* ---- Badges ---- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-blue { background: #eaf1ff; color: var(--color-primary-dark); }
.badge-green { background: #ecfdf3; color: #116932; }
.badge-amber { background: #fef7e6; color: var(--color-amber); }
.badge-gray { background: #f3f4f6; color: var(--color-muted); }

/* ---- CTA band ---- */
.cta-band {
  background: var(--color-ink);
  color: #fff;
  padding: 56px 0;
  text-align: center;
}
.cta-band h2, .cta-band p { color: #fff; }
.cta-band p { color: #d1d5db; }

/* ---- Footer ---- */
.site-footer { background: var(--color-bg-alt); border-top: 1px solid var(--color-border); margin-top: 40px; }
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding: 56px 0 32px;
}
.footer-col h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-muted); margin-bottom: 14px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--color-body); }
.footer-legal { font-size: 0.85rem; color: var(--color-muted); margin: 10px 0 4px; }
.footer-bottom { border-top: 1px solid var(--color-border); padding: 20px 0; }
.footer-bottom p { margin: 0; color: var(--color-muted); font-size: 0.85rem; }

/* ---- Table (used for careers list, simple content tables) ---- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  h1 { font-size: 2rem; }
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    display: none;
    gap: 16px;
  }
  .site-nav.open { display: flex; }
  .site-nav ul { flex-direction: column; gap: 14px; }
  .nav-cta { align-self: flex-start; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .stat-row { gap: 28px; }
}