/* 
  Consulting Design System 
  Minimal, Text-First, High-Contrast
*/

:root {
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --bg-color: #ffffff;
  --text-main: #111111;
  --text-muted: #555555;
  --highlight: #f0f0f0;
  --border-color: #e5e5e5;
  --max-width: 1100px;
  --spacing-unit: 1.5rem;
  --accent-color: #2f3a2e;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: var(--accent-color);
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

header {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.1rem;
  text-transform: uppercase;
}

nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}

nav a {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.cta-button-nav {
  background: var(--text-main);
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  text-decoration: none !important;
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

p.lead {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 650px;
  margin-bottom: 2rem;
  font-weight: 400;
}

section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border-color);
}

section:last-child {
  border-bottom: none;
}

/* Components */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-top: 3rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.card {
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-color);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  border-color: #d0d0d0;
}

.card-flagship {
  padding: 2rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-color);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card-flagship:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.card a {
  position: relative;
  z-index: 10;
  text-decoration: none;
}

.card a:hover,
.card-flagship a:hover {
  text-decoration: underline;
}

.card p,
.card-flagship p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.hero {
  padding: 6rem 0;
}

.btn {
  display: inline-block;
  background: var(--text-main);
  color: white;
  padding: 1rem 2rem;
  font-weight: 500;
  margin-right: 1rem;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.testimonial {
  background: var(--highlight);
  padding: 3rem;
  margin-top: 3rem;
}

.testimonial quote {
  font-size: 1.5rem;
  font-weight: 500;
  display: block;
  margin-bottom: 1.5rem;
}

.testimonial cite {
  font-style: normal;
  font-size: 0.9rem;
  color: var(--text-muted);
}

footer {
  padding: 4rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsiveness */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  nav ul {
    width: 100%;
    justify-content: space-between;
    gap: 0;
  }
}

.micro-label {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 0.75rem;
  display: block;
}