/* =====================================================
   Schweickart LLC – Executive Minimal Style
   PURPOSE:
   - Calm
   - Professional
   - Content-first
   - No bubbles, no gradients, no tricks
   ===================================================== */

/* ---------- Reset ---------- */
* {
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #111827;
  background: #ffffff;
}

/* ---------- Layout ---------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

section {
  padding: 3rem 0;
}

/* ---------- Typography ---------- */
h1, h2, h3 {
  margin: 0 0 0.75rem 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 2.4rem;
  line-height: 1.2;
}

h2 {
  font-size: 1.6rem;
}

h3 {
  font-size: 1.1rem;
}

p {
  margin: 0 0 1rem 0;
  color: #374151;
  max-width: 72ch;
}

strong {
  font-weight: 600;
}

/* ---------- Links ---------- */
a {
  color: #111827;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Header / Nav ---------- */
header {
  border-bottom: 1px solid #e5e7eb;
  background: #ffffff;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}

.brand {
  font-size: 1rem;
  font-weight: 700;
}

.brand small {
  display: block;
  font-size: 0.8rem;
  color: #6b7280;
  font-weight: 500;
}

nav {
  display: flex;
  gap: 1.25rem;
}

nav a {
  font-size: 0.95rem;
  color: #374151;
}

nav a:hover {
  color: #111827;
  text-decoration: none;
  border-bottom: 2px solid #111827;
  padding-bottom: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.6rem 1rem;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  background: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
}

.btn:hover {
  background: #f9fafb;
}

.btn.primary {
  background: #111827;
  color: #ffffff;
  border-color: #111827;
}

.btn.primary:hover {
  background: #000000;
}

/* ---------- Hero ---------- */
.hero {
  padding: 4rem 0 3rem;
}

.hero p {
  font-size: 1.05rem;
}

.hero .actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ---------- Simple Grids ---------- */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* ---------- Cards (very restrained) ---------- */
.card {
  border: 1px solid #e5e7eb;
  padding: 1.25rem;
}

.card p {
  margin-bottom: 0;
}

/* ---------- Case Study Lists ---------- */
.case,
.case-study,
article {
  border-top: 1px solid #e5e7eb;
  padding: 1.25rem 0;
}

.case:first-child {
  border-top: none;
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid #e5e7eb;
  padding: 2.5rem 0;
  margin-top: 3rem;
}

footer p {
  font-size: 0.9rem;
  color: #6b7280;
}

footer a {
  font-weight: 600;
}

/* ---------- Mobile ---------- */
@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }

  nav {
    display: none;
  }

  h1 {
    font-size: 2rem;
  }
}