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

:root {
  /* Warm, eye-friendly neutral canvas (no blues, no purples) */
  --bg-color: #f7f6f2;
  --surface-color: #ffffff;
  --text-main: #1f1f1f;
  --text-muted: #5e5e5e;
  --text-faint: #7a7a7a;
  --border-light: #e4e2dc;
  --border-dark: #2a2a2a;
  --link-color: #1a1a1a;
  --link-hover-bg: #eceae4;

  /* CV Block Accent (Warm Golden Parchment) */
  --cv-bg: #faf1dd;
  --cv-border: #d4bc82;
  --cv-border-hover: #b89a54;
  --cv-domain: #5e4d28;
  --cv-hover-bg: #f4e8cc;

  /* Blog Block Accent (Soft Herbal Sage) */
  --blog-bg: #eaf2e7;
  --blog-border: #b2ccad;
  --blog-border-hover: #8fad88;
  --blog-domain: #445c3f;
  --blog-hover-bg: #ddead9;

  --mono-font: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --sans-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
}

html {
  font-size: 16px;
  background-color: var(--bg-color);
  color: var(--text-main);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--sans-font);
  line-height: 1.55;
  color: var(--text-main);
  background-color: var(--bg-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 2.5rem 1.25rem 4rem;
}

/* ==========================================================================
   Layout Container
   ========================================================================== */
.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-light);
}

.site-title {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.site-tagline {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   Primary Top Navigation (Top 4 Wide)
   ========================================================================== */
.primary-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.primary-link {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0.85rem 1rem;
  background-color: var(--surface-color);
  border: 1px solid var(--border-light);
  border-radius: 2px;
  text-decoration: none;
  color: var(--text-main);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.primary-link:hover,
.primary-link:focus-visible {
  background-color: var(--link-hover-bg);
  border-color: var(--border-dark);
}

.primary-link .link-label {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.primary-link .link-domain {
  font-family: var(--mono-font);
  font-size: 0.76rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Distinct color highlights for CV and Blog */
.primary-link-cv {
  background-color: var(--cv-bg);
  border-color: var(--cv-border);
}

.primary-link-cv:hover,
.primary-link-cv:focus-visible {
  background-color: var(--cv-hover-bg);
  border-color: var(--cv-border-hover);
}

.primary-link-cv .link-domain {
  color: var(--cv-domain);
}

.primary-link-blog {
  background-color: var(--blog-bg);
  border-color: var(--blog-border);
}

.primary-link-blog:hover,
.primary-link-blog:focus-visible {
  background-color: var(--blog-hover-bg);
  border-color: var(--blog-border-hover);
}

.primary-link-blog .link-domain {
  color: var(--blog-domain);
}

/* ==========================================================================
   Sections & Headings
   ========================================================================== */
.section {
  margin-bottom: 2.75rem;
}

.section-heading-group {
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.section-heading-group .section-title {
  margin-bottom: 0.2rem;
}

.section-meta {
  display: block;
  font-size: 0.82rem;
  color: var(--text-faint);
  font-style: italic;
}

/* ==========================================================================
   Project Grid (2 Side-by-Side)
   ========================================================================== */
.project-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
}

.project-item {
  display: flex;
  flex-direction: column;
  background-color: var(--surface-color);
  border: 1px solid var(--border-light);
  border-radius: 2px;
  padding: 1.05rem 1.15rem;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.project-item:hover {
  border-color: #b8b6af;
}

.project-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.project-title {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.35;
}

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

.project-title a:hover,
.project-title a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.project-domain {
  font-family: var(--mono-font);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
}

.project-domain:hover,
.project-domain:focus-visible {
  color: var(--text-main);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.82rem;
  color: var(--text-faint);
  text-align: center;
}

.site-footer a {
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer a:hover {
  color: var(--text-main);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
/* Tablet: 2x2 for top links */
@media (max-width: 820px) {
  .primary-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile: Single column stack, adjusted padding */
@media (max-width: 600px) {
  body {
    padding: 1.75rem 1rem 3rem;
  }

  .primary-links {
    grid-template-columns: 1fr;
  }

  .project-list {
    grid-template-columns: 1fr;
  }
}