/* ============================================
   Koji — Personal Site Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1c1c1c;
  --text-primary: #e8e8e8;
  --text-secondary: #9a9a9a;
  --text-muted: #5a5a5a;
  --accent: #e07a3a;
  --accent-hover: #f08a4a;
  --accent-glow: rgba(224, 122, 58, 0.15);
  --border: #222222;
  --radius: 10px;
  --transition: 0.25s ease;
  --max-width: 960px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

main {
  flex: 1;
}

section {
  padding: 4rem 0;
}

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

/* Navigation removed from the portfolio pages. */

/* --- Hero --- */
.hero {
  padding: 6rem 0 4rem;
  border-bottom: none;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  letter-spacing: 0.04em;
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.hero__tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.6;
}

/* --- Section Headings --- */
.section-heading {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.section-heading::before {
  content: '// ';
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 400;
}

/* --- About --- */
.about__text {
  color: var(--text-secondary);
  max-width: 640px;
  font-size: 1rem;
  line-height: 1.8;
}

/* --- Project Cards --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 360px));
  gap: 1.25rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.project-card__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.project-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.project-card__link {
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.project-card__link::after {
  content: '→';
  transition: transform var(--transition);
}

.project-card:hover .project-card__link::after {
  transform: translateX(3px);
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: auto;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.site-footer__links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
}

.site-footer__links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.site-footer__links a:hover {
  color: var(--text-secondary);
}

/* --- Responsive --- */
@media (max-width: 640px) {
  section {
    padding: 3rem 0;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

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