/* Elia Construction Inc. - Warm Architectural Design System */
:root {
  /* Warm architectural palette - olive tree inspired */
  --color-bg: #f8f5f0;           /* Warm off-white / parchment */
  --color-bg-alt: #f0ebe3;       /* Slightly deeper warm */
  --color-surface: #ffffff;
  --color-text: #2c2a26;         /* Warm near-black */
  --color-text-muted: #5c574f;   /* Warm gray */
  --color-primary: #4a5c3a;      /* Deep olive green */
  --color-primary-hover: #3a4a2e;
  --color-accent: #8b7355;       /* Warm taupe / olive wood */
  --color-accent-light: #c4b5a0; /* Soft sand */
  --color-border: #e0d9ce;       /* Thin warm border */
  --color-line: #d4cbbd;         /* Thin architectural lines */
  
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', system-ui, sans-serif;
  
  --max-width: 1100px;
  --header-height: 72px;
  --radius: 2px;                 /* Sharp, architectural */
  --transition: 0.2s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

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

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

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

/* Typography */
h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--color-text);
}

h1 { font-size: clamp(2rem, 5vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 245, 240, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

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

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text);
  text-transform: uppercase;
}

.logo span {
  color: var(--color-primary);
  font-weight: 500;
}

.nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 450;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  position: relative;
}

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

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-primary);
}

.nav-cta {
  background: var(--color-primary);
  color: white !important;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  font-size: 0.85rem !important;
}

.nav-cta:hover {
  background: var(--color-primary-hover);
}

/* Mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--color-border);
}

.hero-content {
  max-width: 640px;
}

.hero-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 1rem;
  font-weight: 500;
}

.hero h1 {
  margin-bottom: 1.25rem;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 520px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: white;
}

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

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

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-header {
  max-width: 560px;
  margin-bottom: 3rem;
}

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

/* Services grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.75rem;
  transition: border-color var(--transition);
}

.service-card:hover {
  border-color: var(--color-accent-light);
}

.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.service-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

.service-icon {
  width: 28px;
  height: 28px;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.about-text p {
  margin-bottom: 1.25rem;
}

.about-highlight {
  border-left: 2px solid var(--color-primary);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
}

.about-highlight p {
  font-style: italic;
  color: var(--color-text);
  margin: 0;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  text-align: center;
  padding: 1.5rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info h3 {
  margin-bottom: 0.4rem;
}

.contact-item {
  margin-bottom: 1.75rem;
}

.contact-item a {
  color: var(--color-text);
  font-weight: 500;
}

.contact-item a:hover {
  color: var(--color-primary);
}

.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  border-radius: var(--radius);
  margin-bottom: 1.1rem;
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
  margin-top: 2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
}

.footer-brand {
  font-weight: 500;
  letter-spacing: 0.03em;
}

.footer-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Thin architectural line divider */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 0;
}

/* Utility */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }

/* Responsive */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero {
    padding: 3.5rem 0 3rem;
  }

  .section {
    padding: 3.5rem 0;
  }
}