/* ============================================================
   space chainsaw — style.css
   Dark olive theme, electric lime accent #89fc00
   ============================================================ */

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

:root {
  --bg:          #0d0d0d;
  --bg-alt:      #111111;
  --bg-card:     #161616;
  --border:      #2a2a2a;
  --accent:      #89fc00;
  --accent-dim:  #358600;
  --text:        #fdfdff;
  --text-muted:  #81717a;
  --text-code:   #c2fd6a;
  --sidebar-w:   220px;
  --font-sans:   -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono:   'Cascadia Code', 'Fira Code', 'Source Code Pro', Consolas, monospace;
  --radius:      4px;
  --transition:  0.25s ease;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

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

a:hover {
  color: var(--accent-dim);
  text-decoration: underline;
}

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

/* ---- Site wrapper (centered container) ---- */
.site-wrapper {
  max-width: 1100px;
  margin: 0 auto;
  min-height: 100vh;
}

/* ---- Topbar (mobile only) ---- */
.topbar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: var(--bg);
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 200;
}

.topbar__title a {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-decoration: none;
}

/* Hamburger button */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  gap: 4px;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Hamburger animated to X when open */
body.nav-open .hamburger__line:nth-child(1) { transform: translateY(9px) rotate(45deg); }
body.nav-open .hamburger__line:nth-child(2) { opacity: 0; }
body.nav-open .hamburger__line:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ---- Backdrop (mobile) ---- */
.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

body.nav-open .nav-backdrop {
  opacity: 1;
  pointer-events: auto;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar__brand {
  padding: 1.75rem 1.25rem 1rem;
}

.sidebar__title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-decoration: none;
  display: block;
  line-height: 1.4;
}

.sidebar__title:hover {
  color: var(--accent-dim);
  text-decoration: none;
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  padding: 1.25rem 0;
  gap: 0;
}

.nav-link {
  display: block;
  padding: 0.65rem 1.25rem;
  font-size: 0.925rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-decoration: none;
  border-left: 3px solid transparent;
  letter-spacing: 0.03em;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--accent);
  background: rgba(0, 229, 255, 0.05);
  text-decoration: none;
  border-left-color: var(--accent-dim);
}

.nav-link--active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(0, 229, 255, 0.07);
}

/* ---- Layout wrapper ---- */
.layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- Main content ---- */
.main-content {
  flex: 1;
  padding: 2.5rem 2.5rem 2rem;
  max-width: 860px;
  width: 100%;
}

/* ---- Footer ---- */
.footer {
  margin-left: 0;
  padding: 1.25rem 2.5rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---- Page header ---- */
.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.page-header__title {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.page-header__sub {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ---- Post card (homepage list) ---- */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-card {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

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

.post-card__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  letter-spacing: 0.04em;
}

.post-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.post-card__title a {
  color: var(--text);
}

.post-card__title a:hover {
  color: var(--accent);
  text-decoration: none;
}

.post-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.title-with-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.review-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent-dim);
  border-radius: 6px;
  padding: 0.08rem 0.42rem;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.58em;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1.2;
  white-space: nowrap;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.tag-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.12rem 0.42rem;
  text-decoration: none;
}

.tag-link:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
  text-decoration: none;
}

/* ---- Single post ---- */
.post {}

.post__header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.post__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.post__title {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.post__desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.post__rating {
  margin-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
}

.post__rating-value {
  color: var(--text-muted);
}

/* Post body typography */
.post__body {
  line-height: 1.85;
}

.post__body h1,
.post__body h2,
.post__body h3,
.post__body h4 {
  font-family: var(--font-mono);
  color: var(--accent);
  margin: 2rem 0 0.75rem;
  letter-spacing: 0.02em;
}

.post__body h1 { font-size: 1.5rem; }
.post__body h2 { font-size: 1.25rem; }
.post__body h3 { font-size: 1.05rem; }

.post__body p {
  margin-bottom: 1.1rem;
  color: var(--text);
}

.post__body ul,
.post__body ol {
  margin: 0 0 1rem 1.5rem;
}

.post__body li {
  margin-bottom: 0.3rem;
}

.post__body blockquote {
  margin: 1.25rem 0;
  padding: 0.75rem 1.25rem;
  border-left: 3px solid var(--accent);
  background: var(--bg-card);
  color: var(--text-muted);
  font-style: italic;
}

.post__body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  color: var(--text-code);
  background: var(--bg-card);
  padding: 0.15em 0.4em;
  border-radius: var(--radius);
}

.post__body pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  margin: 1.25rem 0;
}

.post__body pre code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
  color: var(--text-code);
}

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

.post__body a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post__footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

/* ---- Archive ---- */
.archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.archive-item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
}

.archive-item__content {
  min-width: 0;
}

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

.archive-item__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.archive-item__title {
  font-size: 0.95rem;
  color: var(--text);
}

.archive-item__title:hover {
  color: var(--accent);
  text-decoration: none;
}

.archive-item__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ---- Pagination ---- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  gap: 1rem;
}

.pagination__link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent);
  transition: background var(--transition), border-color var(--transition);
}

.pagination__link:hover {
  background: rgba(0, 229, 255, 0.07);
  border-color: var(--accent);
  text-decoration: none;
}

.pagination__link--disabled {
  color: var(--text-muted);
  cursor: default;
  pointer-events: none;
}

.pagination__info {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---- Misc ---- */
.empty {
  color: var(--text-muted);
  font-style: italic;
}

/* ============================================================
   Responsive — Mobile
   ============================================================ */
@media (max-width: 767px) {
  /* Show topbar */
  .topbar {
    display: flex;
  }

  /* Sidebar: pull it out of grid flow and overlay it */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform var(--transition);
    width: min(var(--sidebar-w), 80vw);
    z-index: 170;
  }

  /* Backdrop visible when open */
  .nav-backdrop {
    display: block;
  }

  /* When nav is open */
  body.nav-open .sidebar {
    transform: translateX(0);
  }

  /* Layout takes full width, push down below topbar */
  .layout {
    margin-left: 0;
    padding-top: 52px;
  }

  .main-content {
    padding: 1.5rem 1.1rem 1.5rem;
  }

  .footer {
    padding: 1rem 1.1rem;
  }

  .post__title {
    font-size: 1.35rem;
  }

  .page-header__title {
    font-size: 1.3rem;
  }

  /* Archive items stack on very small screens */
  .archive-item {
    flex-direction: column;
    gap: 0.15rem;
  }
}

@media (min-width: 768px) {
  /* Hide mobile chrome */
  .topbar    { display: none !important; }
  .hamburger { display: none !important; }
  .nav-backdrop { display: none !important; }

  /* CSS Grid: sidebar + main side by side */
  .site-wrapper {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    grid-template-areas: "sidebar main";
  }

  /* Sidebar: sticky so it follows scroll */
  .sidebar {
    grid-area: sidebar;
    position: sticky;
    top: 0;
    height: 100vh;
    border-right: 1px solid var(--border);
  }

  /* Main area */
  .layout {
    grid-area: main;
  }
}