/* ============================================================
   GRUVBOX — Dark Hard
   ============================================================ */

/* --- DARK HARD --- */
:root {
  --bg:    #1d2021;
  --bg0:   #0d0e0f;
  --bg1:   #282828;
  --bg2:   #3c3836;
  --bg3:   #504945;
  --bg4:   #665c54;
  --fg:    #ebdbb2;
  --fg2:   #d5c4a1;
  --fg3:   #bdae93;
  --muted: #a89984;
  --accent:   #fabd2f;
  --accent2:  #fe8019;
  --green:    #b8bb26;
  --blue:     #83a598;
  --red:      #fb4934;
  --purple:   #d3869b;
  --aqua:     #8ec07c;
  --border:   #3c3836;
  --border2:  #504945;
  --code-bg:  #0d0e0f;
  --tag-bg:   rgba(250,189,47,0.10);
  --tag:      #fabd2f;
  --shadow-sm:  0 1px 4px rgba(0,0,0,0.5);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.6);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.7);
  --nav-bg:   rgba(13,14,15,0.95);
  --hero-dot: var(--bg2);
  --footer-bg: #0d0e0f;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.75;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent2); }

/* ============================================================
   NAV
   ============================================================ */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 58px;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.nav-brand {
  font-weight: 800;
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.nav-brand:hover { color: var(--accent2); }

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Narrow container for reading content (posts, about) */
.container-narrow {
  max-width: 780px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  text-align: center;
  padding: 5rem 1rem 4rem;
  margin-bottom: 3rem;
  position: relative;
  overflow: hidden;
}

/* Dot grid background */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--hero-dot) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.45;
  pointer-events: none;
}

/* Vignette to fade edges */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, var(--bg) 80%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--tag-bg);
  border: 1px solid rgba(250,189,47,0.25);
  border-radius: 20px;
  padding: 0.25rem 0.85rem;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--fg) 0%, var(--accent) 55%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--fg3);
  font-size: 1.15rem;
  max-width: 520px;
  margin: 0 auto 1.75rem;
  line-height: 1.7;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--bg0);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  transition: background 0.15s, transform 0.15s;
}

.hero-cta:hover {
  background: var(--accent2);
  color: var(--bg0);
  transform: translateY(-2px);
}

/* ============================================================
   SECTION HEADER
   ============================================================ */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.section-header h2 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.section-header span {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ============================================================
   PROJECT CATALOG — Grid
   ============================================================ */
.project-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.project-card {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0;
  transition: opacity 0.18s;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border2);
  box-shadow: var(--shadow-lg);
}

.project-card:hover::before {
  opacity: 1;
}

/* Featured badge */
.featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bg0);
  background: var(--accent);
  padding: 0.2rem 0.55rem;
  border-radius: 20px;
}

.project-card-header {
  padding-right: 4rem; /* space for badge */
}

.project-card h2 {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
}

.project-card h2 a { color: var(--fg); }
.project-card h2 a:hover { color: var(--accent); }

.project-desc {
  color: var(--fg3);
  font-size: 0.92rem;
  line-height: 1.65;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-footer {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.15s;
}

.project-link:hover { gap: 0.6rem; }

/* ============================================================
   TAGS
   ============================================================ */
.tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag);
  padding: 0.15rem 0.6rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid rgba(250,189,47,0.2);
}

/* ============================================================
   POST LIST
   ============================================================ */
.post-list { list-style: none; }

.post-card {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  transition: all 0.15s;
}

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

.post-card h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.post-card h2 a { color: var(--fg); }
.post-card h2 a:hover { color: var(--accent); }

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.post-date { color: var(--muted); font-size: 0.8rem; }

.post-excerpt { color: var(--fg3); font-size: 0.92rem; }

/* ============================================================
   POST PAGE
   ============================================================ */
.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.post-header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.post-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.post-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--aqua);
}

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

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

.post-content li { margin-bottom: 0.3rem; }
.post-content strong { color: var(--fg); }

.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1rem;
  margin: 1.25rem 0;
  background: var(--bg1);
  border-radius: 0 6px 6px 0;
  color: var(--fg3);
}

.post-content hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* ============================================================
   CODE
   ============================================================ */
.post-content code {
  font-family: "Fira Code", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 0.875em;
  background: var(--bg1);
  padding: 0.15em 0.45em;
  border-radius: 4px;
  color: var(--green);
}

.post-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
  color: var(--fg2);
}

/* Syntax highlight */
.kw  { color: #fb4934; }                      /* keywords — red */
.str { color: #b8bb26; }                      /* strings  — green */
.fn  { color: #83a598; }                      /* functions — blue */
.cm  { color: #7c6f64; font-style: italic; }  /* comments — gray */
.num { color: #d3869b; }                      /* numbers  — purple */
.tp  { color: #fabd2f; }                      /* types    — yellow */

/* ============================================================
   TABLES
   ============================================================ */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}

.post-content th {
  background: var(--bg1);
  padding: 0.6rem 1rem;
  text-align: left;
  border: 1px solid var(--border);
  font-weight: 600;
  color: var(--fg);
}

.post-content td {
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  color: var(--fg3);
}

.post-content tr:nth-child(even) td { background: rgba(60,56,54,0.3); }

/* ============================================================
   IMAGES & VIDEO
   ============================================================ */
.post-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 1rem 0;
  border: 1px solid var(--border);
}

.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  margin: 1.25rem 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.video-wrap iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline { position: relative; padding-left: 1.75rem; margin: 1.5rem 0; }
.timeline::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--border));
}

.tl-item { position: relative; margin-bottom: 1.75rem; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -1.875rem; top: 0.4rem;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 3px rgba(250,189,47,0.15);
}

.tl-date { color: var(--accent); font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.2rem; }
.tl-item h3 { font-size: 1.05rem; margin-bottom: 0.3rem; color: var(--fg); }
.tl-item p { color: var(--fg3); font-size: 0.92rem; }

/* ============================================================
   BACK LINK
   ============================================================ */
.back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 2rem;
  transition: color 0.15s, gap 0.15s;
}
.back:hover { color: var(--accent); gap: 0.6rem; }

/* ============================================================
   PROJECT DETAIL
   ============================================================ */
.project-hero {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.project-hero h1 {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 0.75rem;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--fg) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-repo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.section-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  background: var(--footer-bg);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
  max-width: 320px;
  line-height: 1.6;
}

.footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--tag-bg);
  border: 1px solid rgba(250,189,47,0.25);
  color: var(--accent);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.15s, border-color 0.15s;
}

.footer-cta:hover {
  background: rgba(250,189,47,0.2);
  border-color: var(--accent);
  color: var(--accent);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: right;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--fg); }

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--bg3);
  font-size: 0.78rem;
}

/* ============================================================
   RESPONSIVE — Tablet 1024px
   ============================================================ */
@media (max-width: 1024px) {
  .project-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .container { max-width: 100%; }
}

/* ============================================================
   RESPONSIVE — Tablet 768px
   ============================================================ */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.25rem; }
  .hero p { font-size: 1rem; }

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

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-links {
    text-align: left;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
  }
}

/* ============================================================
   RESPONSIVE — Mobile 600px
   ============================================================ */
@media (max-width: 600px) {
  nav { padding: 0 1rem; }
  .nav-links { gap: 1rem; }
  .hero { padding: 3.5rem 1rem 2.5rem; }
  .hero h1 { font-size: 1.9rem; }
  .container { padding: 1.75rem 1rem; }
  .container-narrow { padding: 1.75rem 1rem; }
  .footer-inner { padding: 2rem 1rem 1rem; }
  .footer-bottom { padding: 1rem; }
}