/* =========================================================================
   LeadingTech — Site Stylesheet
   Editorial register, two-pillar layout, brand greens from logo.
   ========================================================================= */

/* ---------- Design tokens ---------- */

:root {
  /* Brand greens, sampled from logo */
  --color-green-bright: #54b948; /* power-button green: accents only */
  --color-green-dark: #4e8318; /* wreath olive: CTAs, links */
  --color-green-darker: #3e6912; /* hover state */

  /* Neutrals — warm, paper-like */
  --color-bg: #faf9f5;
  --color-bg-alt: #f3f1ea;
  --color-card: #ffffff;
  --color-text: #1a1f1d;
  --color-text-soft: #4a524e;
  --color-text-muted: #767e7a;
  --color-divider: #e3e0d6;

  /* Typography */
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Arial, sans-serif;
  --font-mono:
    ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, monospace;

  /* Spacing scale (8px base) */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;
  --space-16: 8rem;

  /* Container */
  --container-max: 76rem; /* ~1216px */
  --container-pad: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- Reset / baseline ---------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem; /* offset for sticky header */
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem; /* ~17px */
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--color-green-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-green-darker);
}

/* ---------- Layout primitives ---------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--container-pad);
}

/* ---------- Typography ---------- */

.section-eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-green-dark);
  margin: 0 0 var(--space-2);
}

.section-eyebrow.centered {
  text-align: center;
}

.section-title {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 var(--space-4);
  max-width: 38ch;
}

.lead {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  background: var(--color-green-dark);
  color: #fff;
  padding: 0.85rem 1.6rem;
  border: none;
  border-radius: 999px;
  font: inherit;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.15s ease,
    transform 0.15s ease;
}

.btn-primary:hover {
  background: var(--color-green-darker);
  color: #fff;
  transform: translateY(-1px);
}

/* ---------- Header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 249, 245, 0.92);
  backdrop-filter: saturate(160%) blur(8px);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--color-divider);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand-mark {
  width: 42px;
  height: 42px;
}

.brand-wordmark {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--color-text-soft);
  text-decoration: none;
  font-weight: 500;
  padding: 0.4rem 0.2rem;
  transition: color 0.15s ease;
}

.site-nav a:hover {
  color: var(--color-green-darker);
}

.site-nav .nav-cta {
  background: var(--color-green-dark);
  color: #fff;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
}

.site-nav .nav-cta:hover {
  background: var(--color-green-darker);
  color: #fff;
}

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

.hero {
  padding-block: clamp(3rem, 8vw, 6rem);
  background: var(--color-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero-text {
  max-width: 36rem;
}

.hero-h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}

.hero-h1 span {
  display: block;
}

.hero-h1 span:nth-child(2) {
  color: var(--color-text-soft);
  font-weight: 600;
}

.hero-h1 span:nth-child(3) {
  color: var(--color-text);
  font-weight: 700;
}

.hero-sub {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--color-text-soft);
  margin: 0 0 var(--space-4);
  max-width: 32rem;
}

.hero-photo {
  position: relative;
  justify-self: end;
  width: 100%;
  max-width: 28rem;
}

.hero-photo img {
  border-radius: 4px;
  box-shadow: 0 24px 48px -16px rgba(26, 31, 29, 0.18);
}

.hero-photo-accent {
  position: absolute;
  inset: -1.5rem -1.5rem auto auto;
  width: 5.5rem;
  height: 5.5rem;
  background: var(--color-green-bright);
  border-radius: 4px;
  z-index: -1;
}

/* ---------- About ---------- */

.about {
  padding-block: clamp(3rem, 8vw, 6rem);
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-divider);
}

.about-inner {
  max-width: 50rem;
}

.about p {
  margin: 0 0 var(--space-3);
  color: var(--color-text-soft);
}

.about .lead {
  color: var(--color-text);
}

.credentials-note {
  font-style: italic;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  border-left: 3px solid var(--color-green-bright);
  padding-left: var(--space-3);
  margin-top: var(--space-4) !important;
}

/* ---------- Services / two-pillar ---------- */

.services {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.pillar {
  background: var(--color-card);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border-radius: 6px;
  border: 1px solid var(--color-divider);
  transition:
    border-color 0.2s ease,
    transform 0.2s ease;
}

.pillar:hover {
  border-color: var(--color-green-dark);
  transform: translateY(-2px);
}

.pillar-data {
  border-top: 4px solid var(--color-green-dark);
}

.pillar-ai {
  border-top: 4px solid var(--color-green-bright);
}

.pillar-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 var(--space-1);
}

.pillar-tagline {
  font-size: 1rem;
  color: var(--color-green-dark);
  font-weight: 500;
  margin: 0 0 var(--space-3);
}

.pillar-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-3);
}

.pillar-list li {
  padding: 0.4rem 0 0.4rem 1.4rem;
  position: relative;
  color: var(--color-text-soft);
  border-bottom: 1px solid var(--color-divider);
}

.pillar-list li:last-child {
  border-bottom: none;
}

.pillar-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95rem;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--color-green-dark);
  border-radius: 50%;
}

.pillar-ai .pillar-list li::before {
  background: var(--color-green-bright);
}

.pillar-note {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin: 0;
}

.partner-note {
  text-align: center;
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  max-width: 56rem;
  margin-inline: auto;
}

/* ---------- Testimonials ---------- */

.testimonials {
  padding-block: clamp(3rem, 8vw, 6rem);
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-divider);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.testimonial-card {
  background: var(--color-card);
  border-radius: 6px;
  border: 1px solid var(--color-divider);
  padding: var(--space-4);
  margin: 0;
  position: relative;
  display: flex;
  flex-direction: column;
}

.testimonial-card::before {
  content: "“";
  position: absolute;
  top: -0.5rem;
  left: 1rem;
  font-size: 4rem;
  line-height: 1;
  color: var(--color-green-bright);
  font-family: Georgia, serif;
}

.testimonial-card p {
  margin: 0 0 var(--space-3);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  flex: 1;
}

.testimonial-card cite {
  font-style: normal;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-2);
  display: flex;
  flex-direction: column;
}

.testimonial-card cite strong {
  font-weight: 600;
  color: var(--color-text);
}

.testimonial-card cite span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ---------- Industries ---------- */

.industries {
  padding-block: clamp(2rem, 5vw, 3.5rem);
  background: var(--color-bg);
}

.industries-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
}

.industries-list li {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  background: var(--color-card);
  border: 1px solid var(--color-divider);
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
}

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

.contact {
  padding-block: clamp(3rem, 8vw, 6rem);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-divider);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.contact-text {
  max-width: 28rem;
}

.contact-text .lead {
  color: var(--color-text-soft);
}

.contact-form {
  background: var(--color-card);
  border: 1px solid var(--color-divider);
  border-radius: 6px;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
}

.contact-form input,
.contact-form textarea {
  font: inherit;
  font-size: 1rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--color-divider);
  border-radius: 4px;
  background: var(--color-bg);
  color: var(--color-text);
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-green-dark);
  box-shadow: 0 0 0 3px rgba(78, 131, 24, 0.15);
}

.contact-form textarea {
  resize: vertical;
  min-height: 8rem;
  font-family: inherit;
}

.contact-form .btn-primary {
  align-self: flex-start;
  margin-top: var(--space-1);
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
}

.form-note code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
}

.form-feedback {
  font-size: 0.9rem;
  margin: 0;
  min-height: 1.4em;
}

.form-feedback--ok {
  color: var(--color-green-dark);
}
.form-feedback--err {
  color: #c0392b;
}

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

.site-footer {
  padding-block: var(--space-6);
  background: var(--color-text);
  color: var(--color-bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-4);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.footer-mark {
  width: 32px;
  height: 32px;
  filter: brightness(1.1);
}

.footer-meta {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(250, 249, 245, 0.75);
}

.footer-meta p {
  margin: 0.15rem 0;
}

.footer-links {
  display: flex;
  gap: var(--space-3);
  font-size: 0.9rem;
}

.footer-links a {
  color: rgba(250, 249, 245, 0.85);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--color-green-bright);
}

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

@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .hero-photo {
    max-width: 22rem;
    justify-self: center;
  }

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

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-3);
  }

  .footer-brand,
  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 600px) {
  .header-inner {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.5rem;
    font-size: 0.875rem;
  }

  .brand-wordmark {
    font-size: 1rem;
  }

  .hero-h1 {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Policy pages (Privacy / Terms) ---------- */

.policy-page {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  background: var(--color-bg);
}

.policy-inner {
  max-width: 50rem;
}

.policy-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-1);
  color: var(--color-text);
}

.policy-date {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-6);
}

.policy-section {
  margin-bottom: var(--space-4);
}

.policy-section h2 {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 var(--space-2);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-divider);
}

.policy-section p,
.policy-section li {
  color: var(--color-text-soft);
  font-size: 1rem;
  line-height: 1.7;
}

.policy-section p {
  margin: 0 0 var(--space-2);
}

.policy-section ul {
  padding-left: 1.4rem;
  margin: 0 0 var(--space-2);
}

.policy-section li {
  margin-bottom: 0.5rem;
}

.policy-section strong {
  color: var(--color-text);
}