/* The GEO Engine — Stylesheet */
/* Brand colours and typography */

:root {
  /* Primary colours */
  --ink: #0E1414;
  --jade: #3FB58A;
  --bone: #F4F2EE;

  /* Secondary colours */
  --purple: #6D4FE0;
  --plum-ink: #15101F;
  --steel: #7A7A7A;

  /* Typography */
  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --container-padding: var(--spacing-lg);

  /* Line height & letter spacing */
  --lh-tight: 0.95;
  --lh-body: 1.55;
  --ls-display: -0.035em;
  --ls-tight: -0.015em;
}

/* Reset & base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bone);
  color: var(--ink);
  font-family: var(--font-display);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1 {
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-display);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  max-width: 65ch;
}

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

a {
  color: var(--jade);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

ul, ol {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-sm);
}

/* Container & layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Navigation */
nav {
  background-color: var(--bone);
  border-bottom: 1px solid rgba(14, 20, 20, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xs);
  padding-bottom: var(--spacing-xs);
  height: 80px;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--ink);
  display: flex;
  align-items: center;
}

.nav-logo a {
  display: inline-flex;
  align-items: center;
}

.nav-logo img {
  height: 60px;
  width: auto;
  display: block;
}

.nav-logo span {
  color: var(--jade);
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-menu a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--jade);
}

/* Mobile menu toggle (hidden by default) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--ink);
}

/* Header & hero sections */
header {
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
  text-align: center;
}

header h1 {
  margin-bottom: var(--spacing-md);
}

.header-subtext {
  font-size: 1.25rem;
  opacity: 0.75;
  margin-bottom: var(--spacing-lg);
  margin-left: auto;
  margin-right: auto;
}

.header-subtext--one-line {
  white-space: nowrap;
  max-width: none;
  font-size: clamp(0.85rem, 1.6vw, 1.25rem);
}

/* Main content sections */
main {
  min-height: calc(100vh - 200px);
}

section {
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
}

section h2 {
  margin-bottom: var(--spacing-xl);
}

/* Cards & components */
.card {
  background: white;
  border: 1px solid rgba(14, 20, 20, 0.08);
  border-radius: 6px;
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.card h3 {
  color: var(--ink);
  margin-bottom: var(--spacing-md);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

/* Buttons */
button,
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--jade);
  color: white;
  border: none;
  border-radius: 4px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: opacity 0.2s ease;
  text-decoration: none;
}

button:hover,
.btn:hover {
  opacity: 0.85;
}

.btn-secondary {
  background-color: var(--ink);
}

/* Forms */
form {
  max-width: 600px;
  margin-top: var(--spacing-xl);
  margin-left: auto;
  margin-right: auto;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  font-size: 0.95rem;
}

input,
select,
textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid rgba(14, 20, 20, 0.12);
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  background-color: white;
  color: var(--ink);
  transition: border-color 0.2s ease;
}

select {
  padding-left: var(--spacing-sm);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--jade);
  box-shadow: 0 0 0 3px rgba(63, 181, 138, 0.1);
}

textarea {
  resize: vertical;
  min-height: 150px;
}

/* List styles */
.list-check {
  list-style: none;
}

.list-check li {
  position: relative;
  padding-left: var(--spacing-lg);
}

.list-check li:before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--jade);
  font-weight: 700;
}

/* Service boxes */
.service-box {
  background: white;
  border: 1px solid rgba(14, 20, 20, 0.08);
  border-radius: 6px;
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.service-box h2 {
  margin-top: 0;
  color: var(--ink);
}

.service-box h3 {
  color: var(--jade);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  opacity: 0.7;
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.service-box h3:first-child {
  margin-top: 0;
}

/* Footer */
footer {
  background-color: var(--ink);
  color: var(--bone);
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
  margin-top: var(--spacing-3xl);
}

footer a {
  color: var(--jade);
}

footer a:hover {
  opacity: 0.8;
}

footer .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
}

.footer-section h3 {
  color: var(--bone);
  margin-bottom: var(--spacing-md);
}

.footer-section p {
  font-size: 0.95rem;
  opacity: 0.85;
  line-height: 1.6;
}

.footer-divider {
  border-top: 1px solid rgba(244, 242, 238, 0.2);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  text-align: center;
  opacity: 0.6;
  font-size: 0.85rem;
}

/* Section background variants */
.bg-bone {
  background-color: var(--bone);
}

.bg-light-purple {
  background-color: rgba(109, 79, 224, 0.06);
}

/* CTA sections */
.cta-section {
  background-color: var(--ink);
  color: var(--bone);
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
  text-align: center;
  margin-top: var(--spacing-3xl);
}

.cta-section h2 {
  color: var(--bone);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: rgba(244, 242, 238, 0.85);
  margin-bottom: var(--spacing-lg);
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn {
  background-color: var(--jade);
  color: var(--ink);
  font-weight: 600;
}

/* Utility classes */
.text-center {
  text-align: center;
}

.text-muted {
  opacity: 0.65;
  font-size: 0.9rem;
}

.accent {
  color: var(--jade);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.divider {
  border-bottom: 1px solid rgba(14, 20, 20, 0.08);
  padding-bottom: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

/* Hero header background images (greyscale, semi-transparent) */
header {
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

header > * {
  position: relative;
  z-index: 1;
}

.hero-bg--home::before    { background-image: url('assets/header-index.jpg'); }
.hero-bg--about::before   { background-image: url('assets/header-about.jpg'); }
.hero-bg--services::before { background-image: url('assets/header-services.jpg'); }
.hero-bg--contact::before { background-image: url('assets/header-contact.jpg'); }

/* Responsive design */
@media (max-width: 768px) {
  :root {
    --container-padding: var(--spacing-md);
    --spacing-3xl: 3rem;
  }

  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--bone);
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    border-bottom: 1px solid rgba(14, 20, 20, 0.08);
  }

  header {
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
  }

  section {
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
  }

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

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

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

/* Print styles */
@media print {
  nav,
  footer,
  .cta-section {
    display: none;
  }

  body {
    background-color: white;
  }
}