/*
Theme Name: TechPlayground
Theme URI: https://www.techplayground.in
Author: TechPlayground
Description: Custom theme for TechPlayground - IT consulting and home lab notes, styled as a rack elevation diagram.
Version: 1.0
Requires PHP: 7.4
Text Domain: techplayground
*/

@font-face {
  font-family: 'TP Mono';
  font-style: normal;
  font-weight: 500;
  src: url('assets/fonts/mono500.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'TP Mono';
  font-style: normal;
  font-weight: 600;
  src: url('assets/fonts/mono600.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'TP Mono';
  font-style: normal;
  font-weight: 700;
  src: url('assets/fonts/mono700.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'TP Sans';
  font-style: normal;
  font-weight: 400;
  src: url('assets/fonts/sans400.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'TP Sans';
  font-style: normal;
  font-weight: 600;
  src: url('assets/fonts/sans600.woff2') format('woff2');
  font-display: swap;
}

:root {
  --bg: #ECEEEF;
  --surface: #F6F7F7;
  --surface-2: #E3E6E8;
  --line: #C7CCD0;
  --line-strong: #A7AEB3;
  --ink: #171A1C;
  --ink-dim: #565F64;
  --accent: #9C5A1E;
  --accent-strong: #7A4416;
  --accent-2: #B3701F;
  --accent-ink: #FBF3EA;
  --shadow: 0 1px 0 rgba(0,0,0,0.04);
  --toggle-x: 0px;
  --sun-o: 1;
  --moon-o: 0.4;

  --font-mono: 'TP Mono', ui-monospace, 'SF Mono', 'Cascadia Code', Consolas, monospace;
  --font-sans: 'TP Sans', -apple-system, 'Segoe UI', sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181B; --surface: #1C2024; --surface-2: #24292D;
    --line: #343B41; --line-strong: #4A535B;
    --ink: #E8EAE9; --ink-dim: #9CA6AB;
    --accent: #C67C3E; --accent-strong: #DE9750; --accent-2: #E3A855;
    --accent-ink: #1A1108; --shadow: 0 1px 0 rgba(0,0,0,0.3);
    --toggle-x: 16px; --sun-o: 0.4; --moon-o: 1;
  }
}
:root[data-theme="dark"] {
  --bg: #15181B; --surface: #1C2024; --surface-2: #24292D;
  --line: #343B41; --line-strong: #4A535B;
  --ink: #E8EAE9; --ink-dim: #9CA6AB;
  --accent: #C67C3E; --accent-strong: #DE9750; --accent-2: #E3A855;
  --accent-ink: #1A1108; --shadow: 0 1px 0 rgba(0,0,0,0.3);
  --toggle-x: 16px; --sun-o: 0.4; --moon-o: 1;
}
:root[data-theme="light"] {
  --bg: #ECEEEF; --surface: #F6F7F7; --surface-2: #E3E6E8;
  --line: #C7CCD0; --line-strong: #A7AEB3;
  --ink: #171A1C; --ink-dim: #565F64;
  --accent: #9C5A1E; --accent-strong: #7A4416; --accent-2: #B3701F;
  --accent-ink: #FBF3EA; --shadow: 0 1px 0 rgba(0,0,0,0.04);
  --toggle-x: 0px; --sun-o: 1; --moon-o: 0.4;
}

* { box-sizing: border-box; }
html { color-scheme: light dark; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-mono); text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.screen-reader-text { position: absolute; left: -9999px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---------- shell ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 56px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 30px; height: 30px;
  padding: 0; margin: 0;
  background: transparent; border: none; cursor: pointer;
}
.nav-toggle-bar { display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 1px; }
.brand { display: flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-weight: 600; font-size: 1rem; letter-spacing: -0.01em; text-decoration: none; }
.brand .dot { color: var(--accent); }
.logo-mark { width: 22px; height: 22px; flex-shrink: 0; }
.logo-mark .logo-bar { fill: var(--ink); }
.logo-mark .logo-led { fill: var(--accent); }

.nav-right { display: flex; align-items: center; gap: 18px; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 2vw, 28px); font-family: var(--font-mono); font-size: 0.82rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; color: var(--ink-dim); }
.nav-links a:hover, .nav-links .current-menu-item a, .nav-links a.current { color: var(--ink); }
.status-chip { display: flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-dim); letter-spacing: 0.04em; white-space: nowrap; }
.led { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 6px var(--accent-2); }
@media (prefers-reduced-motion: no-preference) { .led { animation: pulse 2.4s ease-in-out infinite; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

@media (max-width: 780px) {
  .nav { position: relative; flex-wrap: nowrap; }
  .nav-toggle { display: flex; order: 1; }
  .status-chip { display: none; }
  .brand span { font-size: 0.92rem; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 4px clamp(20px, 5vw, 56px) 12px;
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
  }
  .nav-links.is-open { display: flex; }
  .nav-links li { border-top: 1px solid var(--line); }
  .nav-links li:first-child { border-top: none; }
  .nav-links a { display: block; padding: 12px 2px; font-size: 0.9rem; }
}

.theme-toggle {
  display: flex; align-items: center; gap: 7px;
  background: transparent; border: none; padding: 4px; margin: 0;
  cursor: pointer; color: var(--ink-dim); line-height: 0;
}
.theme-toggle .icon-sun, .theme-toggle .icon-moon { width: 13px; height: 13px; flex-shrink: 0; }
.theme-toggle .icon-sun circle { fill: var(--ink-dim); }
.theme-toggle .icon-sun .rays line { stroke: var(--ink-dim); stroke-width: 1.3; stroke-linecap: round; }
.theme-toggle .icon-sun { opacity: var(--sun-o); }
.theme-toggle .icon-moon path { fill: var(--ink-dim); }
.theme-toggle .icon-moon { opacity: var(--moon-o); }
.theme-toggle:hover .icon-sun, .theme-toggle:hover .icon-moon { opacity: 1; }
.toggle-track {
  width: 34px; height: 18px; border-radius: 9px;
  background: var(--surface-2); border: 1px solid var(--line-strong);
  position: relative; display: inline-block; flex-shrink: 0;
}
.toggle-knob {
  position: absolute; top: 1px; left: 1px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent);
  transform: translateX(var(--toggle-x));
}
@media (prefers-reduced-motion: no-preference) {
  .toggle-knob { transition: transform 0.2s ease; }
}

.page { max-width: 1180px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 56px); }

.band { display: grid; grid-template-columns: 64px 1fr; column-gap: 28px; border-top: 1px solid var(--line); padding: 56px 0; }
.band:first-of-type { border-top: none; }
.tick { font-family: var(--font-mono); font-size: 0.68rem; color: var(--ink-dim); letter-spacing: 0.06em; padding-top: 4px; white-space: nowrap; }
.tick b { display: block; color: var(--ink); font-weight: 600; font-size: 0.78rem; }
@media (max-width: 860px) {
  .band { grid-template-columns: 1fr; row-gap: 10px; padding: 40px 0; }
  .tick { display: flex; gap: 8px; align-items: baseline; }
  .tick b { display: inline; }
}

/* ---------- hero ---------- */
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); line-height: 1.08; font-weight: 600; margin: 14px 0 20px; }
.hero h1 .accent { color: var(--accent); }
.hero p.lede { font-size: 1.05rem; color: var(--ink-dim); max-width: 46ch; margin-bottom: 28px; }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.02em;
  padding: 12px 20px; border-radius: 3px; text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  border: 1px solid transparent; cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn-primary:hover { background: var(--accent-strong); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.terminal { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; box-shadow: var(--shadow); }
.terminal-bar { display: flex; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.terminal-bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.terminal-body { font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.85; padding: 18px 16px 20px; color: var(--ink-dim); white-space: pre-wrap; }
.terminal-body .prompt { color: var(--accent); }
.terminal-body .ok { color: var(--ink); }
.terminal-body .val { color: var(--accent-2); font-weight: 600; }
.cursor { display: inline-block; width: 7px; height: 1em; background: var(--accent); vertical-align: -2px; margin-left: 2px; }
@media (prefers-reduced-motion: no-preference) { .cursor { animation: blink 1.1s steps(1) infinite; } }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- generic content ---------- */
.band h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); font-weight: 600; margin: 10px 0 18px; max-width: 34ch; }
.band .body-copy { max-width: 62ch; color: var(--ink-dim); font-size: 1rem; }
.band .body-copy + .body-copy { margin-top: 14px; }

.stat-row { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; margin-top: 32px; max-width: 62ch; }
.stat { border: 1px solid var(--line); border-radius: 4px; padding: 14px 16px; background: var(--surface); }
.stat .num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 1.4rem; font-weight: 700; color: var(--accent); display: block; }
.stat .label { font-size: 0.78rem; color: var(--ink-dim); margin-top: 4px; display: block; }
@media (max-width: 640px) { .stat-row { grid-template-columns: 1fr; } }

.steps { margin-top: 28px; display: flex; flex-direction: column; }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding: 20px 0; border-top: 1px solid var(--line); }
.step:first-child { border-top: none; padding-top: 0; }
.step .idx { font-family: var(--font-mono); font-weight: 700; font-size: 1.1rem; color: var(--line-strong); }
.step h3 { font-family: var(--font-mono); font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; letter-spacing: 0.02em; }
.step p { color: var(--ink-dim); max-width: 56ch; }

.log-list { margin-top: 28px; display: flex; flex-direction: column; }
.log-item { display: grid; grid-template-columns: 100px 1fr; gap: 18px; padding: 16px 0; border-top: 1px solid var(--line); text-decoration: none; color: inherit; }
.log-item:first-child { border-top: none; }
.log-item .tag { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); letter-spacing: 0.04em; padding-top: 2px; text-transform: uppercase; }
.log-item .title { font-weight: 600; }
.log-item .desc { color: var(--ink-dim); font-size: 0.92rem; margin-top: 4px; max-width: 58ch; }
.log-item:hover .title { color: var(--accent); }
@media (max-width: 640px) { .log-item { grid-template-columns: 1fr; gap: 4px; } }

.blog-more { margin-top: 22px; font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none; color: var(--ink); display: inline-block; }
.blog-more:hover { color: var(--accent); }

.contact-panel { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; margin-top: 28px; padding: 22px 24px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.contact-prompt { font-family: var(--font-mono); font-size: 0.95rem; }
.contact-prompt .prompt { color: var(--accent); }

.contact-form { margin-top: 28px; max-width: 56ch; display: flex; flex-direction: column; gap: 16px; }
.contact-form label { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-dim); margin-bottom: 6px; display: block; }
.contact-form input, .contact-form textarea {
  width: 100%; font-family: var(--font-sans); font-size: 0.95rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 10px 12px;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form .hp-field { position: absolute; left: -9999px; }
.form-notice { font-family: var(--font-mono); font-size: 0.85rem; padding: 12px 14px; border-radius: 4px; border: 1px solid var(--line); }
.form-notice.success { color: var(--accent); border-color: var(--accent); }
.form-notice.error { color: #C24E4E; border-color: #C24E4E; }

.search-form { display: flex; gap: 10px; margin-top: 22px; max-width: 46ch; }
.search-form input[type="search"] {
  flex: 1; font-family: var(--font-sans); font-size: 0.9rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 9px 12px;
}
.search-form input[type="search"]:focus { border-color: var(--accent); }

.related-posts { margin-top: 48px; border-top: 1px solid var(--line); padding-top: 32px; }

/* single post / archive */
.post-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-dim); letter-spacing: 0.04em; margin-top: 8px; }
.post-meta .sep { margin: 0 6px; }
.entry-content { max-width: 66ch; margin-top: 24px; color: var(--ink); }
.entry-content > * + * { margin-top: 1.1em; }
.entry-content h2, .entry-content h3 { margin-top: 1.6em; }
.entry-content pre { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 14px; font-family: var(--font-mono); font-size: 0.85rem; }
.entry-content img { border-radius: 4px; }
.pagination { display: flex; gap: 16px; margin-top: 40px; font-family: var(--font-mono); font-size: 0.85rem; }
.pagination a { text-decoration: none; }
.pagination a:hover { color: var(--accent); }

footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px clamp(20px, 5vw, 56px) 40px;
  display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between;
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-dim);
}