/* Global fonts */
@font-face {
  font-family: "SevenSegment";
  src: url("/fonts/Seven-Segment.woff2") format("woff2"),
       url("/fonts/Seven-Segment.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "DSEG7Classic";
  src: url("/fonts/DSEG7Classic-Regular.woff") format("woff"),
       url("/fonts/DSEG7Classic-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --nav-h: 92px; 
  --bg: #1f2027;
  --text: #e8e8ee;
  --muted: #a9acb8;
  --line: rgba(255,255,255,.10);
  
  --ui-font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --num-font: "DSEG7Classic", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --bit-font: "SevenSegment", monospace; 
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--ui-font); display: flex; flex-direction: column; }

/* --- BASE LAYOUT --- */
.siteNav { position: sticky; top: 0; z-index: 50; height: var(--nav-h); background: rgba(0,0,0,.10); border-bottom: 1px solid var(--line); backdrop-filter: blur(8px); }
.navInner { height: 100%; max-width: 1400px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brandLogo { width: 2.5em; height: 2.5em; image-rendering: pixelated; }
.brandName { letter-spacing: .12em; font-weight: 900; font-size: 18px; }
.navLinks { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.navLinks a { color: var(--muted); text-decoration: none; font-weight: 800; letter-spacing: .12em; font-size: 16px; }
.navLinks a:hover, .navLinks a.active { color: #e8e8ee; } 

.pageWrap { flex: 1; max-width: 1400px; margin: 0 auto; padding: 0 20px 40px; width: 100%; display: flex; flex-direction: column; }
.siteFooter { border-top: 1px solid var(--line); background: rgba(0,0,0,.08); }
.footerInner { max-width: 1400px; margin: 0 auto; padding: 18px 20px; color: var(--muted); font-size: 12px; letter-spacing: .08em; display: flex; flex-direction: column; gap: 6px; }

/* --- SHARED UI COMPONENTS (Used by ALL Simulators) --- */
.divider { height: 1px; background: rgba(255,255,255,.08); margin: 16px 0 16px; }

.bulb { width: 44px; height: 44px; color: rgba(255,255,255,.15); margin-bottom: 8px; flex-shrink: 0; transition: 0.2s ease; background: transparent; display: flex; align-items: center; justify-content: center; }
.bulb svg { width: 100%; height: 100%; display: block; }
.bulb.on { color: #ffd86b !important; filter: drop-shadow(0 0 14px rgba(255, 216, 107, 1)) !important; }
.bulb.on svg { fill: #ffd86b !important; }

.switch { position: relative; width: 56px; height: 28px; display: inline-block; }
.switch input { display: none; }
.slider { position: absolute; inset: 0; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.14); border-radius: 999px; transition: .2s ease; }
.slider::before { content: ""; position: absolute; width: 22px; height: 22px; left: 3px; top: 2px; background: rgba(255,255,255,.92); border-radius: 999px; transition: .2s ease; pointer-events: none; }
.switch input:checked + .slider { background: rgba(40,240,122,.25); border-color: rgba(40,240,122,.30); }
.switch input:checked + .slider::before { transform: translateX(28px); }

.card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.10); border-radius: 16px; padding: 16px; backdrop-filter: blur(10px); }
.cardTitle { font-family: var(--bit-font); font-weight: 900; letter-spacing: .14em; text-transform: uppercase; font-size: 18px; color: rgba(232,232,238,.9); margin-bottom: 12px; }
.hint { font-family: var(--bit-font); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: rgba(232,232,238,.55); margin-top: 10px; line-height: 1.35; }

.btn { border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.06); color: rgba(232,232,238,.92); border-radius: 12px; padding: 10px 12px; font-family: var(--bit-font); font-size: 14px; letter-spacing: .12em; text-transform: uppercase; font-weight: 900; cursor: pointer; }
.btn:hover { border-color: rgba(255,255,255,.22); }
.btnAccent { background: rgba(40,240,122,.12); border-color: rgba(40,240,122,.22); }
.btnAccent:hover { border-color: rgba(40,240,122,.35); }
.btnHalf { width: calc(50% - 6px); }
.btnWide { width: 100%; }
.btnReset { color: rgba(232,232,238,.95); }
.btnReset:hover { background: rgba(255,80,80,.18); border-color: rgba(255,80,80,.35); }

.toolboxToggle { position: fixed; top: var(--toolbox-toggle-top, calc(var(--nav-h) + 16px)); right: 22px; z-index: 90; display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 12px; border: 1px solid rgba(255,255,255,.12); background: rgba(0,0,0,.15); backdrop-filter: blur(8px); color: rgba(232,232,238,.95); font-family: var(--bit-font); font-weight: 800; font-size: 16px; letter-spacing: .12em; text-transform: uppercase; cursor: pointer; }
.toolboxIcon { font-size: 20px; filter: drop-shadow(0 0 8px rgba(255,105,180,.35)); }
.toolboxToggle:hover { border-color: rgba(255,255,255,.22); }