/* ─── Custom Properties ─── */

:root {
  --color-bg: #FDFBF7;
  --color-bg-alt: #F4F1EB;
  --color-text: #3B3733;
  --color-text-light: #6B6560;
  --color-heading: #1E1C1A;
  --color-accent: #5B7F6E;
  --color-accent-hover: #4A6B5B;
  --color-border: #E0DCD6;
  --color-card-bg: #FFFFFF;
  --color-card-shadow: rgba(0, 0, 0, 0.04);

  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-heading: "Source Serif 4", Georgia, "Times New Roman", serif;

  --max-width: 800px;
  --nav-height: 64px;
  --section-padding: 5rem 0;
}


/* ─── Reset & Base ─── */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

strong {
  color: var(--color-heading);
  font-weight: 600;
}

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


/* ─── Typography ─── */

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: 1.3;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

h4 {
  font-size: 1.0625rem;
  font-weight: 600;
}


/* ─── Layout ─── */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: var(--section-padding);
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-title {
  margin-bottom: 2.5rem;
}

.section-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--color-accent);
  margin-top: 0.75rem;
  border-radius: 2px;
}


/* ─── Navigation ─── */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(253, 251, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: ui-monospace, SFMono-Regular, "Cascadia Code", Menlo, Monaco, Consolas, monospace;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-heading);
  letter-spacing: -0.03em;
}

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

.nav-logo-bracket {
  color: var(--color-accent);
  font-weight: 400;
}

.nav-logo-slash {
  color: var(--color-text-light);
  font-weight: 400;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  letter-spacing: 0.01em;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--color-heading);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-heading);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}


/* ─── Hero ─── */

.hero {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.hero-greeting {
  font-size: 1.125rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.hero-name {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}

.hero-tagline {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

.hero-intro {
  max-width: 640px;
}

.hero-intro p {
  margin-bottom: 1rem;
}

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

.hero-links {
  display: flex;
  gap: 1.25rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.hero-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-accent);
  padding: 0.5rem 1.25rem;
  border: 1.5px solid var(--color-accent);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.hero-link:hover {
  background-color: var(--color-accent);
  color: #fff;
}


/* ─── Experience ─── */

.role {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.role:last-of-type {
  border-bottom: none;
  margin-bottom: 2rem;
}

.role-featured {
  margin-bottom: 3rem;
  padding-bottom: 3rem;
}

.role-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.role-company {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 0.125rem;
}

.role-title {
  font-weight: 500;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.role-meta {
  font-size: 0.875rem;
  color: var(--color-text-light);
  white-space: nowrap;
}

.role-note {
  font-weight: 400;
  color: var(--color-text-light);
  font-size: 1rem;
}

.role-description {
  margin-bottom: 1rem;
}

.role-stack {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}


/* ─── Highlight Cards (BSPK) ─── */

.highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.highlight-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px var(--color-card-shadow);
  transition: box-shadow 0.2s ease;
}

.highlight-card:hover {
  box-shadow: 0 4px 12px var(--color-card-shadow);
}

.highlight-card h4 {
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.highlight-card p {
  font-size: 0.925rem;
  line-height: 1.6;
}


/* ─── Education ─── */

.education {
  margin-top: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.95rem;
}


/* ─── Community & Projects ─── */

.project {
  margin-bottom: 1.5rem;
}

.project-featured {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.project-featured h3 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  margin-bottom: 0.25rem;
}

.project-role {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

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

.projects-grid .project {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 0;
  box-shadow: 0 1px 3px var(--color-card-shadow);
  display: flex;
  flex-direction: column;
}

.projects-grid .project h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.projects-grid .project p {
  font-size: 0.9rem;
  line-height: 1.55;
}

.project-lang {
  font-size: 0.8rem !important;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.project-link {
  font-size: 0.85rem;
  font-weight: 500;
  margin-top: auto;
  padding-top: 0.75rem;
}


/* ─── Services ─── */

.services-intro {
  max-width: 640px;
  margin-bottom: 2rem;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

.service-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px var(--color-card-shadow);
  transition: box-shadow 0.2s ease;
}

.service-card:hover {
  box-shadow: 0 4px 12px var(--color-card-shadow);
}

.service-card h3 {
  font-family: var(--font-heading);
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.925rem;
  line-height: 1.6;
}


/* ─── Contact ─── */

.contact-container {
  text-align: center;
}

.contact-text {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.75rem 1.5rem;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  transition: all 0.2s ease;
}

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

.contact-link svg {
  flex-shrink: 0;
}


/* ─── Uses Page ─── */

.uses-heading {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}

.uses-intro {
  font-size: 1.125rem;
  color: var(--color-text-light);
  max-width: 640px;
}

.uses-category {
  margin-bottom: 3rem;
}

.uses-category:last-child {
  margin-bottom: 0;
}

.uses-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.uses-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.uses-item:first-child {
  padding-top: 0;
}

.uses-item:last-child {
  border-bottom: none;
}

.uses-item dt {
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.25rem;
}

.uses-item dd {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}


/* ─── Blog ─── */

.posts-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-preview {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.post-preview:first-child {
  padding-top: 0;
}

.post-preview:last-child {
  border-bottom: none;
}

.post-date {
  font-size: 0.85rem;
  color: var(--color-text-light);
  display: block;
  margin-bottom: 0.25rem;
}

.post-preview-title {
  font-size: 1.375rem;
  margin-bottom: 0.5rem;
}

.post-preview-title a {
  color: var(--color-heading);
}

.post-preview-title a:hover {
  color: var(--color-accent);
}

.post-excerpt {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

.post-empty {
  color: var(--color-text-light);
}

.post-header {
  margin-bottom: 2.5rem;
}

.post-title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0;
}

.post-body {
  max-width: 100%;
}

.post-body h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.post-body h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.post-body p {
  margin-bottom: 1.25rem;
}

.post-body ul, .post-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-body li {
  margin-bottom: 0.35rem;
}

.post-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--color-text-light);
  font-style: italic;
}

.post-body code {
  font-family: ui-monospace, SFMono-Regular, "Cascadia Code", Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
  background-color: var(--color-bg-alt);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.post-body pre.highlight {
  background-color: #1E1C1A;
  border-radius: 8px;
  padding: 1.25rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  line-height: 1.5;
}

.post-body pre.highlight code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
  color: #E0DCD6;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

.post-body strong {
  font-weight: 600;
  color: var(--color-heading);
}

.post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.post-footer a {
  font-weight: 500;
}

/* Rouge syntax highlighting (dark theme) */
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kp,
.highlight .kr, .highlight .kt, .highlight .kc { color: #C792EA; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb,
.highlight .sc, .highlight .sd, .highlight .sh, .highlight .sx { color: #C3E88D; }
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs,
.highlight .cp { color: #6B6560; font-style: italic; }
.highlight .nf, .highlight .nb { color: #82AAFF; }
.highlight .nc, .highlight .nn { color: #FFCB6B; }
.highlight .mi, .highlight .mf, .highlight .mh, .highlight .il { color: #F78C6C; }
.highlight .o, .highlight .ow { color: #89DDFF; }
.highlight .p { color: #E0DCD6; }
.highlight .vi, .highlight .vg, .highlight .vc { color: #F07178; }
.highlight .ss { color: #C792EA; }
.highlight .na { color: #FFCB6B; }
.highlight .sr { color: #89DDFF; }


/* ─── Share Page ─── */

.share-header {
  margin-bottom: 2.5rem;
}

.share-heading {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.share-post-title {
  font-size: 1.125rem;
  color: var(--color-text-light);
}

.share-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.share-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
}

.share-card-platform {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-heading);
  letter-spacing: 0.01em;
}

.share-btn {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  background: none;
  border: 1.5px solid var(--color-accent);
  border-radius: 5px;
  padding: 0.3rem 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.share-btn:hover {
  background-color: var(--color-accent);
  color: #fff;
}

.share-btn--copied {
  background-color: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.share-card-body {
  padding: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.7;
  white-space: pre-wrap;
  color: var(--color-text);
}


/* ─── Footer ─── */

.footer {
  padding: 2rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  border-top: 1px solid var(--color-border);
}


/* ─── Responsive ─── */

@media (max-width: 768px) {
  :root {
    --section-padding: 3.5rem 0;
  }

  .hero-name {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.625rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: rgba(253, 251, 247, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 1rem 1.5rem 1.5rem;
    gap: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 1rem;
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .role-header {
    flex-direction: column;
    gap: 0.25rem;
  }

  .role-meta {
    white-space: normal;
  }

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

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

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

  .contact-links {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero-name, .post-title {
    font-size: 1.75rem;
  }

  .hero-links {
    flex-direction: column;
  }

  .hero-link {
    text-align: center;
  }
}