/* --- System Reset & Variable Tokens --- */
:root {
  --bg: #0f1012;
  --surface: #181a1e;
  --text-main: #e2e4e9;
  --text-muted: #8b909a;
  --accent: #c2a679;
  --border: #282b32;
  --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  background-color: var(--bg);
  color: var(--text-main);
  font-family: var(--font-stack);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Typography & Elements --- */
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.75rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

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

ul {
  list-style: none;
  color: var(--text-muted);
}

ul li {
  margin-bottom: 0.75rem;
}

/* --- Layout Components --- */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 5vw;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--text-main);
}

.site-nav a {
  margin-left: 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 5vw;
}

.hero {
  padding: 4rem 0;
  max-width: 800px;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.75rem;
  background-color: var(--accent);
  color: var(--bg);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border-radius: 2px;
  transition: opacity 0.2s ease;
}

.btn:hover {
  opacity: 0.85;
}

/* --- Grid & Content Sections --- */
.grid-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 2rem;
}

.card p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

.page-title {
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2rem;
}

.project-item {
  display: flex;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.project-num {
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 600;
}

.contact-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.contact-card {
  background: var(--surface);
  padding: 2rem;
  border: 1px solid var(--border);
}

/* --- Footer --- */
.site-footer {
  padding: 2rem 5vw;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.8rem;
}

.site-footer p {
  margin: 0;
}