/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-2: #21262d;
  --border: #30363d;
  --accent: #58a6ff;
  --accent-2: #3fb950;
  --accent-muted: #1f6feb;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-subtle: #6e7681;
  --python: #3776AB;
  --aws: #FF9900;
  --terraform: #7B42BC;
  --docker: #2496ED;
  --postgres: #4169E1;
  --actions: #2088FF;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
  --max-w: 960px;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

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

a:hover {
  color: #79c0ff;
  text-decoration: underline;
}

/* ===== Layout ===== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 72px 0;
}

section + section {
  border-top: 1px solid var(--border);
}

/* ===== Nav ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  letter-spacing: 0.02em;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

/* ===== Hero ===== */
#hero {
  padding: 100px 0 80px;
  border-top: none;
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero-name {
  font-size: clamp(36px, 6vw, 60px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.4;
}

.hero-title strong {
  color: var(--text);
  font-weight: 600;
}

.hero-desc {
  max-width: 560px;
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #0d1117;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #79c0ff;
  border-color: #79c0ff;
  color: #0d1117;
  text-decoration: none;
}

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

.btn-outline:hover {
  background: var(--surface-2);
  border-color: var(--text-muted);
  color: var(--text);
  text-decoration: none;
}

/* Badges */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid;
}

.badge-python { background: rgba(55,118,171,0.15); color: #79b8ff; border-color: rgba(55,118,171,0.4); }
.badge-aws    { background: rgba(255,153,0,0.12);  color: #f0a732; border-color: rgba(255,153,0,0.35); }
.badge-tf     { background: rgba(123,66,188,0.15); color: #c397f5; border-color: rgba(123,66,188,0.4); }
.badge-docker { background: rgba(36,150,237,0.15); color: #79c0ff; border-color: rgba(36,150,237,0.4); }
.badge-pg     { background: rgba(65,105,225,0.15); color: #79b8ff; border-color: rgba(65,105,225,0.4); }
.badge-gha    { background: rgba(32,136,255,0.15); color: #79c0ff; border-color: rgba(32,136,255,0.4); }

/* ===== About / Overview ===== */
.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.area-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.area-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color var(--transition), background var(--transition);
}

.area-card:hover {
  border-color: var(--accent-muted);
  background: var(--surface-2);
}

.area-icon {
  font-size: 24px;
  margin-bottom: 10px;
}

.area-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.area-focus {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  gap: 20px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 20px;
  transition: border-color var(--transition), background var(--transition);
}

.project-card:hover {
  border-color: var(--accent-muted);
  background: var(--surface-2);
}

.project-icon {
  font-size: 28px;
  line-height: 1;
  padding-top: 2px;
}

.project-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 6px;
}

.project-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.project-name a {
  color: var(--text);
  text-decoration: none;
}

.project-name a:hover {
  color: var(--accent);
}

.project-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.project-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.project-bullets li {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.project-bullets li::before {
  content: "›";
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== Tech Stack ===== */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.stack-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.stack-group-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

/* ===== Philosophy ===== */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.principle-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.principle-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.principle-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ===== Contact ===== */
#contact {
  text-align: center;
}

#contact .section-desc {
  margin: 0 auto 32px;
}

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-subtle);
}

.footer-inner a {
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  nav { display: none; }
  section { padding: 52px 0; }
  #hero { padding: 60px 0 52px; }

  .project-card {
    grid-template-columns: 1fr;
    gap: 12px 0;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}