/* IT Architecture Consultancy Limited — Landing styles */

:root {
  --color-bg: #f6f4f0;
  --color-bg-alt: #ebe8e2;
  --color-surface: #ffffff;
  --color-text: #1a1f2e;
  --color-text-muted: #5c6478;
  --color-accent: #0d4f4f;
  --color-accent-light: #1a7a78;
  --color-accent-soft: rgba(13, 79, 79, 0.08);
  --color-border: rgba(26, 31, 46, 0.1);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-serif: "Instrument Serif", Georgia, serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(26, 31, 46, 0.06);
  --shadow-lg: 0 12px 48px rgba(26, 31, 46, 0.1);
  --header-h: 72px;
  --max-width: 1180px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-light);
}

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(246, 244, 240, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
}

.logo:hover {
  color: var(--color-text);
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  border-radius: 8px;
  position: relative;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 3px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
}

.logo-suffix {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.main-nav ul {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.main-nav a:hover {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Hero */
.hero {
  padding: 4rem 0 5rem;
  background:
    radial-gradient(ellipse 80% 60% at 100% 0%, rgba(13, 79, 79, 0.06) 0%, transparent 60%),
    var(--color-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  font-weight: 400;
  line-height: 1.15;
  margin: 0 0 1.25rem;
  letter-spacing: -0.02em;
}

.lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

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

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

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-full {
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
}

.hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hero-stats strong {
  font-size: 0.9375rem;
}

.hero-stats span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Architecture diagram */
.architecture-diagram {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.diagram-layer {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  text-align: center;
}

.layer-business {
  background: var(--color-accent);
  color: #fff;
}

.layer-apps {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border: 1px solid rgba(13, 79, 79, 0.15);
}

.layer-data {
  background: rgba(26, 31, 46, 0.04);
  color: var(--color-text);
  border: 1px dashed var(--color-border);
}

.layer-infra {
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
}

/* Sections */
.section {
  padding: 5rem 0;
}

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

.section-header {
  margin-bottom: 2.5rem;
  max-width: 720px;
}

.section-header.centered {
  text-align: center;
  margin-inline: auto;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 400;
  line-height: 1.2;
  margin: 0;
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 1rem 0 0;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

.two-col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: start;
}

.two-col.reverse {
  direction: rtl;
}

.two-col.reverse > * {
  direction: ltr;
}

.prose p {
  margin: 0 0 1.25rem;
  color: var(--color-text-muted);
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose.wide {
  max-width: 900px;
}

.centered-note {
  text-align: center;
  max-width: 720px;
  margin: 2.5rem auto 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Info card */
.info-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

.info-card h3 {
  margin: 0 0 1.25rem;
  font-size: 1.125rem;
}

.info-card dl {
  margin: 0;
}

.info-card dl > div {
  margin-bottom: 1.25rem;
}

.info-card dl > div:last-child {
  margin-bottom: 0;
}

.info-card dt {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.info-card dd {
  margin: 0;
  font-weight: 500;
  font-size: 0.9375rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--color-surface);
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.service-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.service-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.0625rem;
}

.service-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Feature list */
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 2rem;
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* Highlight panel */
.highlight-panel {
  background: var(--color-accent);
  color: #fff;
  padding: 2rem;
  border-radius: var(--radius-lg);
}

.highlight-panel h3 {
  margin: 0 0 1.25rem;
  font-size: 1.125rem;
}

.highlight-panel ul {
  margin: 0;
  padding-left: 1.25rem;
}

.highlight-panel li {
  margin-bottom: 0.5rem;
  font-size: 0.9375rem;
  opacity: 0.95;
}

.highlight-panel li:last-child {
  margin-bottom: 0;
}

/* Three col */
.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.three-col h3 {
  margin: 0 0 0.75rem;
  font-size: 1.0625rem;
}

.three-col p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Timeline */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2rem;
}

.timeline li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 2rem;
  align-items: start;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.timeline li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.timeline-step {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-accent);
  opacity: 0.5;
  line-height: 1;
}

.timeline h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.timeline p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Industries */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.industry-item {
  background: var(--color-surface);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.industry-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.industry-item p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Principles */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.principle {
  padding: 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.principle h3 {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
}

.principle p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Engagement */
.engagement-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.engagement-grid article {
  background: var(--color-surface);
  padding: 1.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.engagement-grid h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
}

.engagement-grid p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Insights */
.insights-list {
  display: grid;
  gap: 1.5rem;
}

.insight {
  padding: 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
  box-shadow: var(--shadow);
}

.insight h3 {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
}

.insight p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* FAQ */
.faq-list {
  max-width: 760px;
  margin-inline: auto;
}

.faq-list details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-list summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list details[open] summary {
  border-bottom: 1px solid var(--color-border);
}

.faq-list p {
  margin: 0;
  padding: 1.25rem 1.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Contact */
.contact-section {
  background:
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-details {
  font-style: normal;
  margin-top: 2rem;
  font-size: 0.9375rem;
}

.contact-details p {
  margin: 0 0 0.75rem;
}

.muted {
  color: var(--color-text-muted);
  font-style: italic;
}

.contact-form {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.9375rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  transition: border-color var(--transition);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-note {
  margin: 1rem 0 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.85);
  padding: 3rem 0;
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 2rem;
  align-items: start;
}

.footer-logo {
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: #fff;
}

.footer-tagline {
  margin: 0;
  opacity: 0.7;
}

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

.footer-nav a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
}

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

.footer-nav li {
  margin-bottom: 0.5rem;
}

.footer-legal p {
  margin: 0 0 0.5rem;
  opacity: 0.7;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid,
  .two-col,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .two-col.reverse {
    direction: ltr;
  }

  .card-grid,
  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .three-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 1rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .industry-grid,
  .principles-grid,
  .engagement-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

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

  .timeline li {
    grid-template-columns: 3rem 1fr;
    gap: 1rem;
  }
}