/* 1. RESET: Eric Meyer’s Reset v2.0 */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

/* 2. BOX-SIZING & ROOT VARIABLES */
*, *::before, *::after {
  box-sizing: border-box; /* predictable sizing */ 
}

:root {
  --color-primary: #1e3a5f;
  --color-accent: #ff6b35;
  --color-bg: #f5f5f5;
  --color-text: #333333;
  --font-base: 1rem; /* 16px default */
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
}

/* 3. BASE TYPOGRAPHY */
html {
  font-size: var(--font-base);
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* 4. LAYOUT UTILITIES */
.container {
  max-width: 1200px;
  margin: 0 auto; /* center */ 
  padding: 0 var(--spacing-md);
}

.flex {
  display: flex; /* flex utility */ 
}

.grid-2 {
  display: grid; /* 2-column grid */ 
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

/* 5. HEADER & NAVIGATION */
header {
  background: #fff;
  padding: var(--spacing-md) 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-md);
}
nav a {
  text-decoration: none;
  color: var(--color-primary);
  font-weight: bold;
}

/* 6. HERO SECTION */
.hero {
  background: var(--color-primary) url('hero-bg.jpg') no-repeat center/cover;
  color: #fff;
  text-align: center;
  padding: var(--spacing-lg) 0;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}
.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}
.btn {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: var(--spacing-sm) var(--spacing-lg);
  text-decoration: none;
  border-radius: 4px;
  transition: background 0.3s;
}
.btn:hover {
  background: darken(var(--color-accent), 10%);
}

/* 7. FEATURES & SERVICES */
.features .feature-grid,
.services .service-grid {
  margin-top: var(--spacing-lg);
  gap: var(--spacing-md);
}
.feature-item, .service-item {
  background: #fff;
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 8. FORMS */
form {
  background: #fff;
  padding: var(--spacing-lg);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  margin-top: var(--spacing-lg);
}
input, select, textarea {
  width: 100%;
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  border: 1px solid #ccc;
  border-radius: 4px;
  font: inherit;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* 9. CALENDLY WIDGET */
.calendly-inline-widget {
  width: 100%;
  max-width: 600px;
  margin: var(--spacing-lg) auto;
}

/* 10. FOOTER */
footer {
  background: #222;
  color: #eee;
  padding: var(--spacing-md) 0;
  text-align: center;
  font-size: 0.875rem;
}
footer a {
  color: var(--color-accent);
  margin: 0 var(--spacing-sm);
  text-decoration: none;
}

/* 11. RESPONSIVE BREAKPOINTS */
@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr; /* single column on tablet */ 
  }
  nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}
@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
}