/* UETC Pages theme, Unified Field Press aligned: dark, restrained gold, high readability */

:root{
  --bg: #0b0c10;
  --panel: #0f1117;
  --text: #f0f0f0;
  --muted: #b7b7b7;
  --line: rgba(255,255,255,0.10);
  --gold: #c9a227;      /* restrained gold */
  --gold2: #a8861f;     /* darker gold */
  --link: #d6b24a;
  --max: 980px;
}

/* Base */
html, body { background: var(--bg); color: var(--text); }
body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; line-height: 1.6; }

/* Layout container */
.ufp-container { max-width: var(--max); margin: 0 auto; padding: 0 18px; }

/* Header */
.ufp-header{
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15,17,23,0.95), rgba(11,12,16,0.95));
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
}
.ufp-header-inner{ padding: 18px 0 14px 0; }

.ufp-brand{
  display: flex;
  gap: 14px;
  align-items: baseline;
  flex-wrap: wrap;
}
.ufp-brand-title{
  font-weight: 800;
  letter-spacing: 0.4px;
  font-size: 20px;
  text-decoration: none;
  color: var(--gold);
}
.ufp-brand-sub{
  color: var(--muted);
  font-size: 13px;
}

/* Nav */
.ufp-nav{
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.ufp-nav a{
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 13px;
}
.ufp-nav a:hover{
  border-color: rgba(255,255,255,0.18);
  color: var(--link);
}

/* Content */
.ufp-main { padding: 28px 0 26px 0; }
.ufp-card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 16px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}

h1, h2, h3 { color: var(--text); }
h1 { font-size: 32px; margin-top: 0; }
h2 { margin-top: 26px; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
p, li { color: var(--text); }
hr { border: 0; border-top: 1px solid var(--line); margin: 22px 0; }

a { color: var(--link); }
a:hover { color: #f0d37a; }

.ufp-callout{
  background: rgba(201,162,39,0.08);
  border: 1px solid rgba(201,162,39,0.25);
  border-radius: 14px;
  padding: 14px 16px;
}
.ufp-callout strong { color: var(--gold); }

/* Cards */
.ufp-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.ufp-mini{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 14px;
}
.ufp-mini-title{ font-weight: 700; color: var(--gold); margin-bottom: 6px; }
.ufp-mini p{ margin: 0 0 8px 0; color: var(--muted); font-size: 14px; }

/* Footer */
.ufp-footer{
  border-top: 1px solid var(--line);
  padding: 18px 0;
  color: var(--muted);
  font-size: 13px;
}
.ufp-footer a{ color: var(--muted); }
.ufp-footer a:hover{ color: var(--link); }

/* Make MathJax blend */
mjx-container { color: var(--text) !important; }

/* --- Readability fixes --- */

/* Ensure main text and lists are bright enough */
.ufp-card p,
.ufp-card li,
.ufp-card ul,
.ufp-card ol {
  color: var(--text);
}

/* Headings inside content */
.ufp-card h2,
.ufp-card h3 {
  color: var(--text);
}

/* Links inside content */
.ufp-card a {
  color: var(--link);
  font-weight: 500;
}

/* Make list bullets visible */
.ufp-card ul li::marker {
  color: var(--gold);
}

/* Slightly brighten muted explanatory text */
.ufp-card .muted,
.ufp-card em {
  color: #d0d0d0;
}

/* --- MathJax display equation styling --- */

/* Center and scale display equations */
mjx-container[display="true"] {
  display: block;
  text-align: center;
  margin: 1.4em 0 1.2em 0;
  font-size: 1.15em; /* subtle, professional increase */
}

/* Ensure math text color matches body */
mjx-container {
  color: var(--text) !important;
}

/* Slightly de-emphasize text inside math like 'vacuum limit' */
mjx-container mjx-text {
  color: #d6d6d6;
}