/* =========================
   CSS RESET (Light)
========================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

/* =========================
   CSS VARIABLES (Theme-able)
========================= */
:root {
  /* Colors */
  --color-primary: #0f172a;
  --color-secondary: #2563eb;
  --color-bg: #ffffff;
  --color-muted: #64748b;

  /* Typography */
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;

  /* Layout */
  --container-width: 1200px;
  --container-padding: 1rem;
}

/* =========================
   GLOBAL STYLES
========================= */
body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background-color: var(--color-bg);
  color: var(--color-primary);
}

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

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

/* =========================
   LAYOUT HELPERS
========================= */
.container {
  max-width: var(--container-width);
  padding-inline: var(--container-padding);
  margin-inline: auto;
}

.section {
  padding: 4rem 0;
}

.section--muted {
  background-color: #f8fafc;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 768px) {
  .section {
    padding: 2.5rem 0;
  }
}

/* Buttons */
.btn-primary {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-secondary);
  color: #fff;
  border-radius: 4px;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.service-card {
  padding: 1.5rem;
  background-color: #fff;
  border-radius: 6px;
  border: 1px solid #e5e7eb;
}

/* Contact */
.contact-list {
  list-style: none;
  padding: 0;
}

.contact-list li {
  margin-bottom: 0.5rem;
}