/* ==========================================================================
   D&A Logics — Stylesheet
   Clean corporate theme: white backgrounds, blue/gray accents
   ========================================================================== */

:root {
  --color-primary: #0b5fff;
  --color-primary-dark: #0a4fd6;
  --color-primary-light: #eaf1ff;
  --color-ink: #111827;
  --color-ink-soft: #4b5563;
  --color-border: #e5e7eb;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f9fc;
  --color-dark: #0d1b3d;
  --shadow-sm: 0 1px 3px rgba(17, 24, 39, 0.08);
  --shadow-md: 0 8px 24px rgba(17, 24, 39, 0.08);
  --radius: 12px;
  --max-width: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

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

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

section {
  padding: 88px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.section-head p {
  color: var(--color-ink-soft);
  font-size: 17px;
  margin: 0;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-ink);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-light {
  background: #fff;
  color: var(--color-primary);
}

.btn-light:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

.logo-img {
  height: 36px;
  width: auto;
  max-width: 66px;
  display: block;
}

.footer-grid .logo-img {
  height: 30px;
  max-width: 55px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-ink);
  font-weight: 500;
  font-size: 15px;
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  margin: 5px 0;
  transition: 0.2s;
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 88px;
  background:
    radial-gradient(1000px 500px at 85% -10%, var(--color-primary-light), transparent),
    var(--color-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
}

.hero h1 .accent {
  color: var(--color-primary);
}

.hero p {
  font-size: 18px;
  color: var(--color-ink-soft);
  max-width: 520px;
  margin: 0 0 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

.hero-stats div {
  min-width: 100px;
}

.hero-stats strong {
  display: block;
  font-size: 26px;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.hero-stats span {
  font-size: 14px;
  color: var(--color-ink-soft);
}

.hero-visual {
  position: relative;
  background: var(--color-dark);
  border-radius: 20px;
  padding: 32px;
  color: #fff;
  box-shadow: var(--shadow-md);
}

.hero-visual .window-dots {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
}

.hero-visual .window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
}

.hero-visual pre {
  margin: 0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  line-height: 1.7;
  color: #cfe0ff;
  white-space: pre-wrap;
}

.hero-visual .accent-line { color: #7cb0ff; }
.hero-visual .accent-string { color: #9be89b; }
.hero-visual .accent-comment { color: #7d8aa8; }

/* ---------- Logos / trust strip ---------- */

.trust-strip {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-strip p {
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin: 0 0 24px;
}

.trust-pills {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.trust-pills span {
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-ink-soft);
  font-weight: 600;
}

/* ---------- Services ---------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-icon svg {
  width: 26px;
  height: 26px;
}

.service-card h3 {
  font-size: 19px;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.service-card p {
  color: var(--color-ink-soft);
  font-size: 15px;
  margin: 0 0 16px;
}

.service-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--color-ink-soft);
}

.service-card li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
}

.service-card li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ---------- About / Why us ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}

.about-grid h2 {
  font-size: clamp(26px, 3.5vw, 34px);
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}

.about-grid > div:first-child p {
  color: var(--color-ink-soft);
  font-size: 16px;
  margin: 0 0 16px;
}

.why-list {
  display: grid;
  gap: 20px;
}

.why-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.why-item .num {
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--color-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.why-item h4 {
  margin: 0 0 4px;
  font-size: 16px;
}

.why-item p {
  margin: 0;
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* ---------- Process ---------- */

.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.process-step {
  position: relative;
  padding: 28px 22px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--color-border);
}

.process-step .step-index {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.process-step h4 {
  margin: 0 0 8px;
  font-size: 17px;
}

.process-step p {
  margin: 0;
  font-size: 14px;
  color: var(--color-ink-soft);
}

/* ---------- CTA banner ---------- */

.cta-banner {
  background: linear-gradient(135deg, var(--color-dark), #10245c);
  color: #fff;
  border-radius: 20px;
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-banner h2 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3vw, 30px);
  letter-spacing: -0.02em;
}

.cta-banner p {
  margin: 0;
  color: #c9d6f5;
  font-size: 16px;
}

.cta-banner-text {
  max-width: 480px;
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

.contact-info h2 {
  font-size: clamp(26px, 3.5vw, 32px);
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.contact-info > p {
  color: var(--color-ink-soft);
  margin: 0 0 28px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.contact-item .icon {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-item strong {
  display: block;
  font-size: 13px;
  color: var(--color-ink-soft);
  font-weight: 600;
}

.contact-item a, .contact-item span.value {
  font-size: 15px;
  color: var(--color-ink);
  font-weight: 600;
}

.contact-form {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-ink);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  color: var(--color-ink);
  background: #fbfcfe;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  background: #fff;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 12px;
}

.form-success {
  display: none;
  background: #ecfdf3;
  border: 1px solid #a7e8c4;
  color: #067647;
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 18px;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--color-dark);
  color: #b9c6ea;
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid .logo {
  color: #fff;
  margin-bottom: 12px;
}

.footer-grid p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h5 {
  color: #fff;
  font-size: 14px;
  margin: 0 0 16px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: #b9c6ea;
  font-size: 14px;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #8b98bd;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .hero-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .cta-banner {
    flex-direction: column;
    text-align: center;
    padding: 40px 28px;
  }
}

@media (max-width: 720px) {
  .nav-links,
  .nav-cta .btn-outline {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  body.nav-open .nav-links {
    display: flex;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px 24px;
    gap: 18px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  section {
    padding: 64px 0;
  }
}