/* ==========================================================================
   AGENTWAVE — Vaporwave / synthwave (80s retro-future) theme
   - DARK is the default look: neon-on-deep-purple, sunset gradient + grid horizon
   - LIGHT toggle is a pastel "daytime Miami" variant (sunlit, still readable)
   - Self-contained: no bamboo.css. Fonts via Google Fonts (loaded in layout head).
   - Token structure: :root (= dark default) / html[data-theme="light"] /
     @media(prefers-color-scheme:dark) / html[data-theme="dark"]
   ========================================================================== */

/* --- Design tokens -------------------------------------------------------- */

/* :root renders the DARK neon look by default so first paint is on-brand. */
:root,
html[data-theme="dark"] {
  --bg: #1a1033;
  --bg-soft: #241447;
  --bg-elev: #2c1858;
  --txt: #e8e0ff;
  --muted: #b0a3d6;
  --line: rgba(185, 103, 255, 0.32);
  --line-strong: #b967ff;

  /* neon palette */
  --pink: #ff71ce;
  --cyan: #01cdfe;
  --lavender: #b967ff;
  --mint: #05ffa1;
  --yellow: #fffb96;

  --accent: var(--cyan);
  --accent-2: var(--pink);
  --accent-soft: rgba(1, 205, 254, 0.14);

  /* sunset gradient behind the header */
  --sunset: linear-gradient(180deg, #ff71ce 0%, #b967ff 48%, #2a1456 100%);
  --grid-line: rgba(255, 113, 206, 0.55);
  --grid-glow: rgba(1, 205, 254, 0.35);
  --sky-glow: radial-gradient(
    120% 80% at 50% 0%,
    rgba(255, 113, 206, 0.22) 0%,
    rgba(185, 103, 255, 0.12) 35%,
    transparent 70%
  );

  /* glows */
  --glow-cyan: 0 0 8px rgba(1, 205, 254, 0.7), 0 0 18px rgba(1, 205, 254, 0.35);
  --glow-pink: 0 0 8px rgba(255, 113, 206, 0.7), 0 0 18px rgba(255, 113, 206, 0.35);

  --code-bg: rgba(13, 6, 36, 0.7);
  --code-txt: #f6efff;
  --inline-code: var(--mint);

  /* syntax */
  --hl-red: #ff71ce;
  --hl-green: #05ffa1;
  --hl-yellow: #fffb96;
  --hl-blue: #01cdfe;
  --hl-cyan: #7df9ff;
  --hl-magenta: #b967ff;
  --hl-comment: #8e7ec4;

  --shadow-shape: rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

/* When the OS prefers dark and the user hasn't forced light, keep dark tokens.
   (:root already IS dark, so this block simply guards against light overrides
   being needed — kept for the documented token structure.) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1a1033;
    --bg-soft: #241447;
  }
}

/* LIGHT — "daytime Miami": pastel cream/peach, sunlit, darker text for contrast */
html[data-theme="light"] {
  --bg: #fff4ea;
  --bg-soft: #ffe7f2;
  --bg-elev: #ffffff;
  --txt: #3a1f52;          /* deep plum text on cream → strong contrast */
  --muted: #8a5a8f;
  --line: rgba(214, 51, 132, 0.28);
  --line-strong: #d63384;

  --pink: #ff4fb0;
  --cyan: #009fc4;
  --lavender: #9b4dff;
  --mint: #0aa06e;
  --yellow: #d39a00;

  --accent: #c0267a;       /* dark pink/magenta — readable as link color */
  --accent-2: #009fc4;
  --accent-soft: rgba(192, 38, 122, 0.1);

  --sunset: linear-gradient(180deg, #ffd1e8 0%, #ffc4e0 45%, #c9f0ff 100%);
  --grid-line: rgba(255, 79, 176, 0.5);
  --grid-glow: rgba(0, 159, 196, 0.28);
  --sky-glow: radial-gradient(
    120% 80% at 50% 0%,
    rgba(255, 169, 213, 0.45) 0%,
    rgba(201, 240, 255, 0.3) 40%,
    transparent 72%
  );

  --glow-cyan: 0 0 6px rgba(0, 159, 196, 0.35);
  --glow-pink: 0 0 6px rgba(255, 79, 176, 0.35);

  --code-bg: #fff;
  --code-txt: #4a2a5e;
  --inline-code: #0aa06e;

  --hl-red: #d63384;
  --hl-green: #0a8a5f;
  --hl-yellow: #b07d00;
  --hl-blue: #0077a3;
  --hl-cyan: #0a8aa3;
  --hl-magenta: #8a3ddb;
  --hl-comment: #9a7fb0;

  --shadow-shape: rgba(123, 31, 162, 0.18);
  color-scheme: light;
}

/* --- Base layout ---------------------------------------------------------- */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  max-width: 52rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 5rem;
  min-height: 100vh;
  background: var(--bg);
  color: var(--txt);
  font-family: "Rajdhani", ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.12rem;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ===== Signature visual: fixed background sky + grid horizon ============== */
.vapor-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background: var(--bg);
  pointer-events: none;
}

/* sky glow at the top */
.vapor-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sky-glow);
}

/* The retro perspective grid receding to a horizon at the bottom. */
.vapor-grid {
  position: absolute;
  left: -50%;
  right: -50%;
  bottom: 0;
  height: 55vh;
  background-image:
    repeating-linear-gradient(
      to right,
      transparent 0,
      transparent calc(2.5% - 1px),
      var(--grid-line) calc(2.5% - 1px),
      var(--grid-line) 2.5%
    ),
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(7% - 1px),
      var(--grid-line) calc(7% - 1px),
      var(--grid-line) 7%
    );
  transform: perspective(38vh) rotateX(72deg);
  transform-origin: bottom center;
  filter: drop-shadow(0 0 6px var(--grid-glow));
  -webkit-mask-image: linear-gradient(to top, #000 35%, transparent 100%);
  mask-image: linear-gradient(to top, #000 35%, transparent 100%);
  opacity: 0.85;
}

/* glow band at the horizon line */
.vapor-bg::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 55vh;
  height: 2px;
  background: var(--line-strong);
  box-shadow: 0 0 14px 2px var(--grid-glow), 0 0 30px var(--accent-2);
  opacity: 0.7;
}

@media (prefers-reduced-motion: no-preference) {
  /* keep it static & performant — no animation by default */
}

::selection {
  background: var(--accent-2);
  color: #15082b;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.15s ease, text-shadow 0.15s ease;
}

a:hover {
  text-shadow: var(--glow-cyan);
}

/* --- Header --------------------------------------------------------------- */

.site-header {
  position: relative;
  margin-bottom: 3.5rem;
  padding: 2.75rem 1.5rem 1.75rem;
  border-radius: 16px;
  overflow: hidden;
  background:
    var(--sky-glow),
    var(--bg-soft);
  border: 1px solid var(--line);
  box-shadow: 0 0 0 1px rgba(255, 113, 206, 0.08),
    0 18px 50px -20px rgba(185, 103, 255, 0.5);
}

/* sunset gradient wash behind the title */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sunset);
  opacity: 0.16;
  z-index: 0;
}

.site-bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* The classic synthwave SUN behind the title, with cutout stripes on its
   lower half. Sits behind the brand text. */
.vapor-sun {
  position: relative;
  display: inline-block;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  flex: none;
  background: linear-gradient(180deg, #fffb96 0%, #ff8fd0 55%, #ff71ce 100%);
  box-shadow: 0 0 18px rgba(255, 143, 208, 0.8), 0 0 42px rgba(255, 113, 206, 0.45);
}

/* horizontal cutout stripes across the sun's lower half */
.vapor-sun::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 50%;
  border-radius: 0 0 50% 50% / 0 0 100% 100%;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    var(--bg-soft) 2px,
    var(--bg-soft) 4px
  );
}

html[data-theme="light"] .vapor-sun {
  background: linear-gradient(180deg, #ffe27a 0%, #ff9ad1 60%, #ff4fb0 100%);
}

.site-brand {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.site-brand-text {
  font-family: "Monoton", "Orbitron", system-ui, sans-serif;
  font-size: clamp(1.5rem, 4.5vw, 2.4rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.05;
  background: linear-gradient(180deg, #fffb96 0%, var(--pink) 55%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--pink); /* fallback */
  filter: drop-shadow(0 0 10px rgba(255, 113, 206, 0.6))
    drop-shadow(0 0 20px rgba(1, 205, 254, 0.3));
}

html[data-theme="light"] .site-brand-text {
  background: linear-gradient(180deg, #ff8fc8 0%, #c0267a 60%, #009fc4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 0 4px rgba(255, 79, 176, 0.35));
}

.site-tagline {
  position: relative;
  z-index: 2;
  font-family: "Rajdhani", monospace;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0.6rem 0 0;
  text-shadow: 0 0 8px rgba(185, 103, 255, 0.3);
}

/* Theme toggle as a neon button */
.theme-toggle {
  position: relative;
  z-index: 2;
  background: rgba(1, 205, 254, 0.06);
  border: 1px solid var(--accent);
  border-radius: 10px;
  width: 2.4rem;
  height: 2.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  box-shadow: var(--glow-cyan);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease,
    box-shadow 0.15s ease, transform 0.15s ease;
}

.theme-toggle:hover {
  color: var(--accent-2);
  border-color: var(--accent-2);
  background: rgba(255, 113, 206, 0.1);
  box-shadow: var(--glow-pink);
  transform: translateY(-1px);
}

.theme-icon {
  display: none;
  line-height: 1;
}

.theme-icon-dark { display: inline; }
.theme-icon-light { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-icon-dark { display: none; }
  :root:not([data-theme="light"]) .theme-icon-light { display: inline; }
}

html[data-theme="dark"] .theme-icon-dark { display: none; }
html[data-theme="dark"] .theme-icon-light { display: inline; }
html[data-theme="light"] .theme-icon-dark { display: inline; }
html[data-theme="light"] .theme-icon-light { display: none; }

/* --- Navigation: neon pills ----------------------------------------------- */

.site-header nav {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 0.85rem;
  margin-top: 1.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  font-family: "Rajdhani", monospace;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease,
    background 0.15s ease, text-shadow 0.15s ease;
}

.site-header nav a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
  text-shadow: none;
}

.site-header nav a[aria-current="true"] {
  color: var(--bg);
  background: var(--accent-2);
  border-color: var(--accent-2);
  box-shadow: var(--glow-pink);
}

html[data-theme="light"] .site-header nav a[aria-current="true"] {
  color: #fff;
}

/* --- Home: posts list ----------------------------------------------------- */

.all-posts {
  display: flex;
  flex-direction: column;
  gap: 2.75rem;
}

.year-section {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.year-heading {
  font-family: "Audiowide", "Orbitron", monospace;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--lavender);
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  border: 0;
  padding: 0;
  text-shadow: 0 0 10px rgba(185, 103, 255, 0.6);
}

.year-heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line-strong), transparent);
  box-shadow: 0 0 6px var(--grid-glow);
}

.posts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.post-row {
  padding: 0.7rem 0.6rem;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: border-color 0.18s ease, background 0.18s ease,
    box-shadow 0.18s ease;
}

.post-row:hover {
  border-color: var(--line);
  background: rgba(185, 103, 255, 0.06);
  box-shadow: inset 0 0 18px rgba(1, 205, 254, 0.06);
}

.post-link {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--txt);
}

.post-link:hover {
  text-shadow: none;
}

.post-arrow {
  color: var(--accent-2);
  font-size: 0.9em;
  transition: transform 0.18s ease, color 0.18s ease, text-shadow 0.18s ease;
}

.post-title {
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: 0.01em;
  flex: 1;
  transition: color 0.18s ease, text-shadow 0.18s ease;
}

.post-meta {
  font-family: "Rajdhani", monospace;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
}

.post-link:hover .post-title {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.post-link:hover .post-arrow {
  color: var(--cyan);
  transform: translateX(5px);
  text-shadow: var(--glow-cyan);
}

.post-description {
  margin: 0.3rem 0 0 1.7rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

/* --- Post page ------------------------------------------------------------ */

.post-back {
  display: inline-block;
  font-family: "Rajdhani", monospace;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.15s ease, text-shadow 0.15s ease, transform 0.15s ease;
}

.post-back:hover {
  color: var(--accent-2);
  text-shadow: var(--glow-pink);
  transform: translateX(-3px);
}

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

.post-head h1 {
  font-family: "Audiowide", "Orbitron", system-ui, sans-serif;
  font-weight: 400;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  margin: 0 0 1rem;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--txt);
  text-shadow: 0 0 12px rgba(255, 113, 206, 0.45),
    0 0 24px rgba(1, 205, 254, 0.2);
}

.post-meta-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: "Rajdhani", monospace;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-shadow: 0 0 6px rgba(185, 103, 255, 0.25);
}

.post-meta-sep {
  opacity: 0.5;
  color: var(--accent-2);
}

.post-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-left: 0.35rem;
}

/* neon-outlined chips */
.post-tag {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
  padding: 0.12em 0.6em;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  box-shadow: 0 0 8px rgba(1, 205, 254, 0.25);
  text-shadow: none;
}

.post-tag:nth-child(even) {
  color: var(--pink);
  border-color: var(--pink);
  box-shadow: 0 0 8px rgba(255, 113, 206, 0.25);
}

.draft-badge {
  display: inline-block;
  font-family: "Rajdhani", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1;
  padding: 0.25em 0.55em;
  border-radius: 5px;
  color: var(--yellow);
  border: 1px solid var(--yellow);
  box-shadow: 0 0 8px rgba(255, 251, 150, 0.3);
}

/* article body — readable, NOT glowing */
.post {
  font-size: 1.12rem;
}

.post p,
.post li {
  line-height: 1.8;
  color: var(--txt);
}

.post h2,
.post h3 {
  font-family: "Orbitron", system-ui, sans-serif;
  font-weight: 600;
  margin-top: 2.6rem;
  letter-spacing: 0.01em;
  color: var(--lavender);
  text-shadow: 0 0 10px rgba(185, 103, 255, 0.4);
}

html[data-theme="light"] .post h2,
html[data-theme="light"] .post h3 {
  color: var(--accent);
  text-shadow: none;
}

.post a {
  font-weight: 600;
}

.post img {
  border-radius: 10px;
  border: 1px solid var(--line);
  box-shadow: 0 0 24px -6px rgba(185, 103, 255, 0.5);
  max-width: 100%;
  height: auto;
}

.post blockquote {
  border-left: 3px solid var(--accent-2);
  padding-left: 1rem;
  margin-left: 0;
  color: var(--muted);
  font-style: normal;
  box-shadow: -3px 0 12px -4px var(--accent-2);
}

.post hr {
  border: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--line-strong), transparent);
}

/* --- Code ----------------------------------------------------------------- */

pre,
code {
  font-family: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Monaco,
    Consolas, monospace;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--code-txt);
  overflow-x: auto;
  box-shadow: inset 0 0 30px rgba(1, 205, 254, 0.05),
    0 0 0 1px rgba(255, 113, 206, 0.06);
}

:not(pre) > code {
  background: var(--accent-soft);
  color: var(--inline-code);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.12em 0.45em;
  font-size: 0.88em;
}

/* Syntax highlighting (highlight.js) */
.hljs-keyword,
.hljs-selector-tag,
.hljs-section,
.hljs-link { color: var(--hl-magenta); }

.hljs-string,
.hljs-attribute,
.hljs-symbol,
.hljs-bullet,
.hljs-addition,
.hljs-template-tag { color: var(--hl-green); }

.hljs-title,
.hljs-name,
.hljs-function .hljs-title,
.hljs-type { color: var(--hl-blue); }

.hljs-variable,
.hljs-template-variable,
.hljs-attr,
.hljs-property { color: var(--hl-cyan); }

.hljs-number,
.hljs-regexp,
.hljs-literal { color: var(--hl-yellow); }

.hljs-built_in,
.hljs-class .hljs-title,
.hljs-params { color: var(--hl-red); }

.hljs-comment,
.hljs-quote,
.hljs-deletion,
.hljs-meta { color: var(--hl-comment); font-style: italic; }

/* --- Footer: sits on the grid horizon ------------------------------------- */

.site-footer {
  position: relative;
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-family: "Rajdhani", monospace;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent-2), transparent);
  box-shadow: 0 0 10px var(--accent-2);
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease, text-shadow 0.15s ease;
}

.footer-links a:hover {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

/* --- Responsive ----------------------------------------------------------- */

@media (max-width: 540px) {
  body {
    padding: 1.75rem 1.1rem 4rem;
    font-size: 1.05rem;
  }

  .site-header {
    padding: 2rem 1.1rem 1.4rem;
  }

  .post-link {
    flex-wrap: wrap;
  }

  .post-meta {
    margin-left: 1.7rem;
  }

  .site-header nav {
    flex-wrap: wrap;
  }
}