/* ==========================================================
   Theme Variables — edit these to restyle the whole site
   ========================================================== */
:root {
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: var(--font-body);

  --color-bg: #f5f5f4;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #4b5563;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #e5e7eb;
  --color-card-bg: #ffffff;
  --color-card-hover: #fafafa;

  --max-width: 1100px;
  --spacing: 1.5rem;
  --radius: 10px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

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

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

/* ==========================================================
   Layout
   ========================================================== */
.site-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--spacing) * 2.5) var(--spacing) calc(var(--spacing) * 4);
}

/* ==========================================================
   Intro Section
   ========================================================== */
.intro {
  display: flex;
  gap: calc(var(--spacing) * 1.5);
  align-items: flex-start;
  background: var(--color-surface);
  padding: calc(var(--spacing) * 1.75);
  border-radius: calc(var(--radius) * 1.5);
  box-shadow: var(--shadow-sm);
  margin-bottom: calc(var(--spacing) * 2.5);
}

.profile-photo {
  width: 160px;
  border-radius: var(--radius);
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.intro-text h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.tagline {
  color: var(--color-accent);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.bio p {
  margin-bottom: 0.65rem;
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.bio p:last-child {
  margin-bottom: 0;
}

.bio a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

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

/* Tags */
.tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
  align-items: center;
}

.tag-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  opacity: 0.6;
  margin-right: 0.1rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  padding: 0.15rem 0.55rem;
  border-radius: 99px;
  letter-spacing: 0.02em;
  opacity: 0.8;
}

/* Social icon links */
.social-links {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.social-links a {
  color: var(--color-text-secondary);
  transition: color var(--transition), background var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--color-bg);
}

.social-links a:hover {
  color: var(--color-accent);
  background: #e0e7ff;
}

/* ==========================================================
   Project Feed
   ========================================================== */
.projects > h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--spacing);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.8rem;
}

.project-card {
  display: flex;
  gap: var(--spacing);
  padding: var(--spacing);
  border-radius: var(--radius);
  background: var(--color-card-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  margin-bottom: var(--spacing);
}

.project-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--color-text);
}

.project-card-image {
  width: 200px;
  height: 140px;
  object-fit: cover;
  border-radius: calc(var(--radius) - 3px);
  flex-shrink: 0;
}

.project-card-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.project-card-body time {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  display: block;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.project-card-body p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==========================================================
   Project Page
   ========================================================== */
.project-header {
  margin-bottom: calc(var(--spacing) * 2);
}

.back-link {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: var(--spacing);
  transition: color var(--transition);
}

.back-link:hover {
  color: var(--color-accent);
}

.project-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.project-header time {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  display: block;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.project-links {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.project-links a {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}

.project-links a:hover {
  background: var(--color-accent);
  color: #fff;
}

.project-content {
  background: var(--color-surface);
  padding: calc(var(--spacing) * 2);
  border-radius: calc(var(--radius) * 1.5);
  box-shadow: var(--shadow-sm);
  font-size: 1rem;
  line-height: 1.75;
}

.project-content h2 {
  font-size: 1.3rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.project-content h3 {
  font-size: 1.1rem;
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
}

.project-content .section-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

.project-content p {
  margin-bottom: 1rem;
}

.project-content img {
  border-radius: 0;
  margin: 1.5rem auto;
  width: auto;
  max-width: 100%;
}

.project-content img.rounded {
  border-radius: var(--radius);
}

.project-content img.full-width {
  width: 100%;
}

.project-content img.ninety-width {
  max-width: 90%;
}

.project-content img.half-width {
  max-width: 50%;
}

.project-content img.two-thirds-width {
  max-width: 66%;
}

.project-content ul,
.project-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.project-content li {
  margin-bottom: 0.25rem;
}

.project-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
  color: var(--color-text-secondary);
  margin: 1.25rem 0;
  font-style: italic;
}

.project-content code {
  font-size: 0.9em;
  background: var(--color-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.project-content pre {
  background: var(--color-bg);
  padding: 1.25rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin-bottom: 1rem;
}

.project-content pre code {
  background: none;
  padding: 0;
}

.project-footer {
  margin-top: calc(var(--spacing) * 3);
  padding-top: var(--spacing);
}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 600px) {
  .site-wrapper {
    padding: var(--spacing) calc(var(--spacing) * 0.75);
  }

  .intro {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing);
  }

  .profile-photo {
    width: 120px;
    height: 120px;
  }

  .social-links {
    justify-content: center;
  }

  .project-card {
    flex-direction: column;
  }

  .project-card-image {
    width: 100%;
    height: 180px;
  }

  .project-content {
    padding: var(--spacing);
  }
}