/* ============================================================
   hord-brayden.github.io - modern design system
   ============================================================ */

:root {
  --bg: #f4f5f7;
  --bg-elev: rgba(255, 255, 255, 0.78);
  --surface: #ffffff;
  --surface-2: #f9fafb;
  --text: #15171a;
  --muted: #5b6370;
  --border: rgba(15, 17, 26, 0.08);
  --border-strong: rgba(15, 17, 26, 0.16);
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: rgba(37, 99, 235, 0.08);
  --good: #16a34a;
  --bad: #dc2626;
  --shadow-sm: 0 1px 2px rgba(15, 17, 26, 0.05);
  --shadow-md: 0 6px 24px -8px rgba(15, 17, 26, 0.18), 0 2px 6px rgba(15, 17, 26, 0.06);
  --shadow-lg: 0 24px 48px -16px rgba(15, 17, 26, 0.25), 0 4px 12px rgba(15, 17, 26, 0.08);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

.dark-mode,
:root.dark-mode {
  --bg: #0b0d12;
  --bg-elev: rgba(20, 23, 30, 0.72);
  --surface: #161a22;
  --surface-2: #1f2330;
  --text: #e7e9ee;
  --muted: #9aa3b2;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --accent: #60a5fa;
  --accent-hover: #93c5fd;
  --accent-soft: rgba(96, 165, 250, 0.14);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(at 18% 12%, rgba(96, 165, 250, 0.10), transparent 55%),
    radial-gradient(at 82% 88%, rgba(168, 85, 247, 0.08), transparent 50%);
  transition: background-color .35s ease, color .35s ease;
}

/* Custom-element wrappers shouldn't break the flex layout. */
header-component,
footer-component { display: contents; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease, color .15s ease;
}
a:hover { color: var(--accent-hover); border-bottom-color: currentColor; }

p { margin: 0 0 1em; }

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin: 0 0 .6em;
  color: var(--text);
}
h1 { font-size: clamp(1.65rem, 1.2rem + 1.5vw, 2.25rem); text-align: center; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}
code {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0.12em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}
.dark-mode code { color: var(--accent-hover); }
pre { white-space: pre-wrap; margin: 0; padding: 0; }

/* ---------- Layout ---------- */

.site-main {
  position: relative;
  z-index: 2;
  flex: 1 0 auto;
  padding: 0 16px 80px;
  width: 100%;
}

.container {
  max-width: 720px;
  margin: 28px auto;
  background: var(--bg-elev);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 28px 30px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  transition: background-color .35s ease, border-color .35s ease;
}

.container--wide { max-width: 1040px; }
.container--flush { padding: 0; overflow: hidden; }

.head-container { text-align: center; }
.head-container .container { margin-top: 24px; }

.t-align-c { text-align: center; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 12px 16px 8px;
  background: linear-gradient(180deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 80%, transparent) 75%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.site-header nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.05rem;
  color: var(--text);
  border: none;
  white-space: nowrap;
}
.brand .brand-dot { color: var(--accent); }
.brand:hover { color: var(--text); border: none; }

.site-header .hamburger-menu {
  display: none;
  cursor: pointer;
  margin-left: auto;
  width: 32px; height: 28px;
  flex-direction: column;
  justify-content: space-around;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 6px;
  background: var(--surface);
}
.site-header .hamburger-menu .bar {
  height: 2px; width: 100%;
  background-color: var(--text);
  border-radius: 2px;
}

.site-header nav ul {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  margin-left: auto;
}

.site-header nav ul li { padding: 0; background: transparent; margin: 0; }

.site-header nav ul li a {
  display: block;
  padding: 7px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 999px;
  border: none;
  transition: all .18s ease;
  white-space: nowrap;
}
.site-header nav ul li a:hover {
  color: var(--text);
  background: var(--surface-2);
  border: none;
}
.site-header nav ul li a.active {
  color: var(--text);
  background: var(--accent-soft);
}

@media (max-width: 860px) {
  .site-header .hamburger-menu { display: flex; }
  .site-header nav ul {
    display: none;
    position: absolute;
    top: 64px;
    right: 16px;
    left: 16px;
    flex-direction: column;
    border-radius: var(--radius);
    padding: 8px;
    margin: 0;
  }
  .site-header nav ul.is-open { display: flex; }
  .site-header nav ul li a { width: 100%; text-align: left; }
}

/* ---------- Hero ---------- */

.hero {
  max-width: 1040px;
  margin: 22px auto 8px;
  padding: 36px 28px;
  text-align: center;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    radial-gradient(ellipse at 50% 0%, var(--accent-soft), transparent 65%),
    var(--bg-elev);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}
.hero h1 {
  font-size: clamp(1.8rem, 1.2rem + 2.4vw, 2.8rem);
  margin-bottom: 8px;
}
.hero .lede {
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 16px;
  font-size: 1.02rem;
}
.hero .hero-cta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 6px;
}

/* ---------- Buttons ---------- */

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform .12s ease, background-color .15s ease, box-shadow .15s ease;
  box-shadow: var(--shadow-sm);
  margin: 8px 0;
}
button:hover, .btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
button:active, .btn:active { transform: translateY(0); }
button:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn--ghost:hover { background: var(--surface-2); color: var(--text); }

.btn--block { display: block; width: 100%; }

#toggleButton, #startStopButton {
  width: auto;
  display: inline-flex;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

/* ---------- Form controls ---------- */

input[type="text"],
input[type="number"],
select,
input[type="file"] {
  width: 100%;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color .15s ease, box-shadow .15s ease, background-color .35s ease;
}
input[type="text"]:focus,
input[type="number"]:focus,
select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.options label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--text);
}

#passwordLength { width: auto; display: inline-block; }

#arrayInput { width: 100%; }
#arrayOutput {
  width: 100%;
  min-height: 6em;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

#passwordOutput {
  text-align: center;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- Canvas (RNG plots / GoL) ---------- */

canvas {
  display: block;
  margin: 16px auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  width: 100%;
  height: auto;
  max-height: 500px;
}

#gameOfLifeCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  border: none;
  border-radius: 0;
  margin: 0;
  max-height: none;
  opacity: 0.18;
  filter: contrast(1.05);
}
.dark-mode #gameOfLifeCanvas {
  opacity: 0.22;
}

/* ---------- RNG section ---------- */

.randomRunner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  max-width: 1100px;
  margin: 0 auto;
}
.randomRunner > .container { margin: 14px 0; }

@media (max-width: 900px) {
  .randomRunner { grid-template-columns: 1fr; }
}

.random-values, .sector-counts {
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: pre-wrap;
  padding: 10px;
  color: var(--muted);
  max-height: 120px;
  overflow: auto;
}
.sector-counts div:first-child {
  white-space: normal !important;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 6px;
}

/* ---------- Pills, badges ---------- */

.pill {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  margin: 0 4px 4px 0;
}

.tag-list { margin: 6px 0; }

/* ---------- NIST testing kit results ---------- */

.bin-counts, .digit-counts {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
  max-height: 280px;
  overflow: auto;
  color: var(--text);
}
.bin-counts p, .digit-counts p { margin: 0 0 8px; padding: 0; font-weight: 600; }

#results { padding: 0; border-radius: var(--radius-sm); }
#results .main-label { padding: 0; margin: 0; }

.results-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 12px;
}
@media (max-width: 720px) { .results-container { grid-template-columns: 1fr; } }

.results-container .standard-chi-results,
.results-container .benfords-chi-results {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.frequencyFalse {
  display: inline-block;
  padding: 3px 10px;
  background: var(--bad) !important;
  color: #fff !important;
  border-radius: 999px;
  font-size: 0.85rem;
}
.frequencyPass {
  display: inline-block;
  padding: 3px 10px;
  background: var(--good) !important;
  color: #fff !important;
  border-radius: 999px;
  font-size: 0.85rem;
}

h2.main-label { text-align: center; }

/* ---------- Resume page ---------- */

.resume-grid { display: grid; gap: 24px; }
.resume-summary {
  font-size: 1.02rem;
  color: var(--text);
}
.resume-summary p { margin-bottom: 0.8em; }

.resume-section h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.resume-role {
  display: grid;
  gap: 4px;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--border);
}
.resume-role:last-child { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
.resume-role .role-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.resume-role .role-title { font-weight: 700; color: var(--text); }
.resume-role .role-meta { color: var(--muted); font-size: 0.92rem; }
.resume-role .role-org { color: var(--muted); font-size: 0.95rem; margin-bottom: 6px; }
.resume-role ul { padding-left: 1.2em; margin: 6px 0 0; }
.resume-role li { margin-bottom: 4px; }

.resume-highlights {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px;
}
.highlight-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.highlight-card strong { display: block; margin-bottom: 6px; color: var(--text); }
.highlight-card span { color: var(--muted); font-size: 0.92rem; }

/* ---------- Privacy & misc ---------- */

.privacy-block {
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 14px;
  z-index: 2;
  margin-top: 18px;
}
.privacy-block a {
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: none;
}
.privacy-block a:hover { color: var(--text); border: none; }

#reSeed {
  width: auto;
  font-size: 0.82rem;
  padding: 6px 14px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
  margin: 0;
}
#reSeed:hover { background: var(--surface-2); }

/* ---------- Footer ---------- */

.site-footer {
  flex-shrink: 0;
  margin-top: auto;
  padding: 28px 16px 36px;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  position: relative;
  z-index: 2;
}
.site-footer .footer-content p { margin: 0; }
.site-footer .footer-content a { color: inherit; }

/* ---------- Game-of-Life "stage" mode ---------- */
/* Triggered from the homepage toggle button: hides the chrome so the GoL
   canvas fills the screen, and surfaces a small floating control to come back. */

body.gol-only .site-header,
body.gol-only .site-main,
body.gol-only .site-footer { display: none !important; }

body.gol-only #gameOfLifeCanvas {
  opacity: 1;
  filter: none;
}

.gol-exit {
  display: none;
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  margin: 0;
  padding: 10px 20px;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
}
body.gol-only .gol-exit { display: inline-flex; }

/* ---------- Dark-mode toggle ---------- */

.dark-mode-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1100;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  transition: background-color .25s ease, transform .15s ease;
}
.dark-mode-toggle:hover { transform: scale(1.04); }

.switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--border-strong);
  transition: .3s;
  border-radius: 999px;
}
.slider:before {
  position: absolute;
  content: "";
  height: 14px; width: 14px;
  left: 3px; bottom: 3px;
  background-color: #fff;
  transition: .3s;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}
input:checked + .slider { background-color: var(--accent); }
input:focus-visible + .slider { box-shadow: 0 0 0 3px var(--accent-soft); }
input:checked + .slider:before { transform: translateX(16px); }

/* ---------- Math content ---------- */

.mathJax { line-height: 1.7; }
.mathJax p { margin-bottom: 1.05em; }

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
  #gameOfLifeCanvas { display: none; }
}

/* ---------- Selection ---------- */
::selection { background: var(--accent-soft); color: var(--text); }