*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0a0a0f;--card:#14141e;--card-border:#1e1e2e;--text:#e0e0e8;--text-muted:#888;--accent:#f44336;--gold:#f0c040;--blue:#2196F3;--green:#4CAF50;--font:'Inter',system-ui,sans-serif}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
h1,h2,h3{line-height:1.2}
a{color:var(--gold);text-decoration:none}

/* Hero */
.hero{text-align:center;padding:4rem 2rem 3rem;background:linear-gradient(180deg,#12121c 0%,var(--bg) 100%)}
.hero-badge{display:inline-block;background:rgba(244,67,54,.15);color:var(--accent);font-size:.75rem;font-weight:700;letter-spacing:.15em;padding:.4rem 1.2rem;border-radius:999px;border:1px solid rgba(244,67,54,.3);margin-bottom:1.5rem}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;margin-bottom:.5rem;background:linear-gradient(135deg,#fff,#ccc);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:1.1rem;color:var(--text-muted);margin-bottom:2rem}
.hero-verdict{display:inline-flex;align-items:center;gap:.75rem;background:rgba(244,67,54,.1);border:1px solid rgba(244,67,54,.3);padding:1rem 2rem;border-radius:12px;font-size:1.15rem}
.verdict-icon{font-size:1.5rem}

/* Key Numbers */
.key-numbers{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;padding:2rem clamp(1rem,5vw,6rem);max-width:1200px;margin:0 auto}
.stat-card{background:var(--card);border:1px solid var(--card-border);border-radius:16px;padding:1.5rem;text-align:center;transition:transform .2s}
.stat-card:hover{transform:translateY(-4px)}
.stat-value{font-size:2.2rem;font-weight:800;color:var(--blue)}
.stat-card.red .stat-value{color:var(--accent)}
.stat-card.gold .stat-value{color:var(--gold)}
.stat-label{font-weight:600;margin:.5rem 0 .25rem;font-size:.95rem}
.stat-desc{font-size:.8rem;color:var(--text-muted)}

/* Sections */
section{padding:3rem clamp(1rem,5vw,6rem);max-width:1200px;margin:0 auto}
h2{font-size:1.8rem;font-weight:800;margin-bottom:.5rem}
.section-desc{color:var(--text-muted);margin-bottom:2rem;max-width:700px}
.highlight-red{color:var(--accent);font-weight:600}

/* Simulation */
.sim-container{display:flex;flex-wrap:wrap;gap:1.5rem;align-items:flex-start}
.controls{display:flex;flex-direction:column;gap:1rem;min-width:200px;flex:0 0 200px}
.control-group{display:flex;flex-direction:column;gap:.3rem}
.control-group label{font-size:.8rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em}
.control-group input[type=range]{width:100%;accent-color:var(--gold)}
.control-val{font-size:1.4rem;font-weight:700;color:var(--gold)}
.btn-row{display:flex;gap:.5rem}
.btn{padding:.6rem 1.2rem;border:none;border-radius:8px;font-family:var(--font);font-weight:600;cursor:pointer;font-size:.9rem;transition:all .15s}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#1976D2}
.btn-secondary{background:var(--card-border);color:var(--text)}
.btn-secondary:hover{background:#2a2a3a}
canvas{background:#0d0d14;border-radius:12px;border:1px solid var(--card-border);flex:1;min-width:0;max-width:100%}
.sim-legend{display:flex;flex-wrap:wrap;gap:1rem;font-size:.8rem;color:var(--text-muted);width:100%;padding-top:.5rem}
.legend-item{display:flex;align-items:center;gap:.4rem}
.swatch{width:14px;height:14px;border-radius:3px;border:1px solid rgba(255,255,255,.1)}

/* Math */
.math-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.math-card{background:var(--card);border:1px solid var(--card-border);border-radius:16px;padding:1.5rem}
.math-card.full-width{grid-column:1/-1}
.math-card h3{font-size:1.1rem;margin-bottom:1rem;color:var(--gold)}
.spec-table{width:100%;border-collapse:collapse}
.spec-table td{padding:.5rem 0;border-bottom:1px solid var(--card-border);font-size:.9rem}
.spec-table td:last-child{text-align:right;font-weight:600;color:var(--blue)}
.formula{background:#0d0d14;border-radius:10px;padding:1.2rem;margin-bottom:1rem}
.formula-name{font-size:.85rem;color:var(--text-muted);margin-bottom:.3rem}
.formula-eq{font-size:1.15rem;font-weight:600;font-family:'Courier New',monospace;padding:.3rem 0;color:var(--gold)}
.formula-example{background:rgba(244,67,54,.05);border:1px solid rgba(244,67,54,.15);border-radius:10px;padding:1.2rem}
.calc-steps p{margin:.4rem 0;font-size:.95rem}
.red{color:var(--accent)!important}
.conclusion{margin-top:.8rem;padding:.8rem;background:rgba(244,67,54,.1);border-radius:8px;font-weight:600}

/* Data Table */
.data-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:12px;overflow:hidden;border:1px solid var(--card-border)}
.data-table th{background:#1a1a28;padding:.8rem 1rem;text-align:left;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted)}
.data-table td{padding:.7rem 1rem;border-top:1px solid var(--card-border);font-size:.9rem}
.data-table .fail{color:var(--accent);font-weight:700}
.data-table .pass{color:var(--green);font-weight:700}

/* Debunk */
.debunk-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.debunk-card{background:var(--card);border-radius:16px;padding:1.5rem;border:1px solid var(--card-border)}
.debunk-card.county{border-color:rgba(244,67,54,.25)}
.debunk-card.reality{border-color:rgba(76,175,80,.25)}
.debunk-badge{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.12em;padding:.3rem .8rem;border-radius:999px;margin-bottom:1rem}
.county .debunk-badge{background:rgba(244,67,54,.15);color:var(--accent)}
.reality .debunk-badge{background:rgba(76,175,80,.15);color:var(--green)}
.debunk-card h3{font-size:1.1rem;margin-bottom:.8rem}
blockquote{border-left:3px solid var(--card-border);padding:.8rem 1rem;margin:.8rem 0;font-style:italic;color:var(--text-muted);font-size:.9rem}
.debunk-card ul{padding-left:1.2rem;margin:.8rem 0}
.debunk-card li{margin:.5rem 0;font-size:.9rem}
.debunk-explain{margin-top:1rem;font-size:.85rem;color:var(--text-muted)}

/* Min Radius */
.min-radius-card{background:var(--card);border:1px solid var(--card-border);border-radius:16px;padding:2rem;text-align:center}
.min-radius-calc{margin-bottom:1.5rem}
.min-radius-calc p{margin-bottom:.5rem;font-size:1.05rem}
.min-radius-calc .formula-eq{font-size:1.1rem;margin:.3rem 0}
.min-radius-calc .result{font-size:1.6rem;margin-top:.8rem;color:var(--accent)}
.comparison{font-size:1.1rem;line-height:1.8}

/* Footer */
footer{text-align:center;padding:3rem 2rem;border-top:1px solid var(--card-border);color:var(--text-muted);font-size:.85rem;max-width:1200px;margin:0 auto}

/* Loading status */
.load-status{display:flex;align-items:center;gap:.75rem;background:var(--card);border:1px solid var(--card-border);border-radius:10px;padding:.9rem 1.2rem;margin-bottom:1.2rem;font-size:.95rem;color:var(--text)}
.load-status.hidden{display:none}
.load-status.error{border-color:rgba(244,67,54,.4);background:rgba(244,67,54,.05);align-items:flex-start}
.load-status.error .spinner{display:none}
.spinner{width:18px;height:18px;border:2px solid #333;border-top-color:var(--gold);border-radius:50%;animation:spin .9s linear infinite;flex-shrink:0}
@keyframes spin{to{transform:rotate(360deg)}}

/* Direction / select control */
.control-group select{background:var(--bg);color:var(--text);border:1px solid var(--card-border);border-radius:6px;padding:.4rem .5rem;font-family:var(--font);font-size:.85rem;width:100%}

@media(max-width:768px){
  .math-grid,.debunk-grid{grid-template-columns:1fr}
  .sim-container{flex-direction:column}
  .controls{flex-direction:row;flex-wrap:wrap;min-width:100%}
  .controls .control-group{flex:1;min-width:140px}
}
.load-status.hidden{display:none}
.load-status.error{border-color:rgba(244,67,54,.4);background:rgba(244,67,54,.05);align-items:flex-start}
.load-status.error .spinner{display:none}
.spinner{width:18px;height:18px;border:2px solid #333;border-top-color:var(--gold);border-radius:50%;animation:spin .9s linear infinite;flex-shrink:0}
@keyframes spin{to{transform:rotate(360deg)}}

.control-group select{background:var(--bg);color:var(--text);border:1px solid var(--card-border);border-radius:6px;padding:.4rem .5rem;font-family:var(--font);font-size:.85rem;width:100%}

@media(max-width:768px){
  .math-grid,.debunk-grid{grid-template-columns:1fr}
  .sim-container{flex-direction:column}
  .controls{flex-direction:row;flex-wrap:wrap;min-width:100%}
  .controls .control-group{flex:1;min-width:140px}
}

/* Traffic controls + collisions box */
.controls{flex:0 0 220px}
.collisions-box{background:#181820;border:1px solid var(--card-border);border-radius:10px;padding:.75rem;text-align:center;margin-top:.25rem}
.collisions-label{font-size:.7rem;letter-spacing:.1em;color:var(--text-muted);text-transform:uppercase;font-weight:600}
.collisions-val{font-size:2rem;font-weight:800;color:var(--green);line-height:1.1;margin:.2rem 0}
.collisions-val.hit{color:var(--accent)}
.collisions-sub{font-size:.75rem;color:var(--text-muted)}

/* Canvas with overlay zoom toolbar */
.canvas-wrap{position:relative;flex:1;min-width:0}
.canvas-wrap canvas{display:block;width:100%}
.canvas-overlay-toolbar{position:absolute;top:10px;right:10px;display:flex;flex-direction:column;gap:6px;z-index:5}
.canvas-btn{width:34px;height:34px;border:1px solid var(--card-border);background:rgba(20,20,30,.92);color:var(--text);border-radius:6px;font-size:1.15rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;line-height:1}
.canvas-btn:hover{background:rgba(30,30,45,1);border-color:var(--gold);color:var(--gold)}

/* Traffic pool checkboxes */
.pool-checks{display:flex;flex-direction:column;gap:.25rem;background:var(--bg);border:1px solid var(--card-border);border-radius:6px;padding:.5rem .65rem}
.pool-checks label{display:flex;align-items:center;gap:.5rem;font-size:.82rem;color:var(--text);cursor:pointer;font-weight:500;text-transform:none;letter-spacing:0}
.pool-checks input[type=checkbox]{accent-color:var(--gold);cursor:pointer}

/* Hide the spinner once load finishes (success or failure) */
.load-status.loaded .spinner{display:none}

/* ===================== MODERN CONTROLS PANEL ===================== */
/* Override the older controls styles. Defined last so they win on cascade. */
.controls{
  flex:0 0 260px;
  display:flex;
  flex-direction:column;
  gap:.8rem;
  background:linear-gradient(180deg,#13131d,#0f0f17);
  border:1px solid var(--card-border);
  border-radius:14px;
  padding:1rem;
}
.ctrl-section{
  display:flex;
  flex-direction:column;
  gap:.55rem;
  padding-bottom:.8rem;
  border-bottom:1px solid #1a1a26;
}
.ctrl-section:last-of-type{border-bottom:none;padding-bottom:.3rem}
.ctrl-section-title{
  font-size:.65rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:#7a7a8a;
  font-weight:700;
  padding:0 .1rem .2rem;
}
.control-group{display:flex;flex-direction:column;gap:.3rem;margin:0}
.control-group label{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:.4rem;
  font-size:.78rem;
  font-weight:600;
  color:var(--text);
  text-transform:none;
  letter-spacing:.01em;
  margin:0;
}
.control-group .control-val{
  font-size:.85rem;
  font-weight:700;
  color:var(--gold);
  background:rgba(240,192,64,.10);
  padding:.05rem .42rem;
  border-radius:999px;
  margin-left:auto;
  line-height:1.3;
}
.control-group .control-unit{
  font-size:.68rem;
  color:#666;
  margin-left:.15rem;
  font-weight:500;
  text-transform:lowercase;
}
.control-group input[type=range]{
  width:100%;
  accent-color:var(--gold);
  height:4px;
  margin-top:.1rem;
}
.control-group select{
  background:#0d0d14;
  color:var(--text);
  border:1px solid #2a2a36;
  border-radius:6px;
  padding:.42rem .55rem;
  font-family:var(--font);
  font-size:.85rem;
  width:100%;
  cursor:pointer;
  transition:border-color .15s;
}
.control-group select:hover{border-color:#3a3a46}
.control-group select:focus{outline:none;border-color:var(--gold)}

/* Traffic pool: 2-col grid for compactness */
.pool-checks{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:.3rem .6rem;
  background:#0d0d14;
  border:1px solid #2a2a36;
  border-radius:6px;
  padding:.5rem .55rem;
}
.pool-checks label{
  display:flex;
  align-items:center;
  gap:.4rem;
  font-size:.76rem;
  color:var(--text);
  font-weight:500;
  text-transform:none;
  letter-spacing:0;
  cursor:pointer;
  margin:0;
}
.pool-checks label:hover{color:var(--gold)}
.pool-checks input[type=checkbox]{
  accent-color:var(--gold);
  cursor:pointer;
  width:14px;height:14px;
  flex-shrink:0;
}

/* Collisions box */
.collisions-box{
  background:linear-gradient(180deg,#1a1a26,#15151f);
  border:1px solid #2a2a36;
  border-radius:10px;
  padding:.9rem .8rem;
  text-align:center;
}
.collisions-label{
  font-size:.62rem;
  letter-spacing:.16em;
  color:#7a7a8a;
  text-transform:uppercase;
  font-weight:700;
}
.collisions-val{
  font-size:2.2rem;
  font-weight:800;
  color:var(--green);
  line-height:1.05;
  margin:.25rem 0 .15rem;
}
.collisions-val.hit{color:var(--accent)}
.collisions-sub{font-size:.72rem;color:#9a9aaa;line-height:1.5}

/* Action buttons: compact row of 4 ghost/primary */
.action-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:.4rem;
}
.btn{
  padding:.55rem .6rem;
  border:none;
  border-radius:7px;
  font-family:var(--font);
  font-weight:600;
  cursor:pointer;
  font-size:.82rem;
  transition:all .15s;
  text-align:center;
}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#1976D2}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid #2a2a36;
}
.btn-ghost:hover{background:#1f1f2c;border-color:var(--gold);color:var(--gold)}
.btn-secondary{background:#1f1f2c;color:var(--text)}
.btn-secondary:hover{background:#2a2a3a}

/* Cleaner load-status bar */
.load-status{
  background:linear-gradient(180deg,#15151f,#0f0f17);
  border:1px solid #2a2a36;
  padding:.7rem 1rem;
}
.load-status.error{
  border-color:rgba(244,67,54,.35);
  background:linear-gradient(180deg,rgba(244,67,54,.06),rgba(244,67,54,.02));
}
.load-status.loaded:not(.error){
  border-color:rgba(76,175,80,.25);
  background:linear-gradient(180deg,rgba(76,175,80,.04),rgba(76,175,80,.01));
}

/* Slimmer scrollbar in pool list for narrow viewports — visual polish */
.pool-checks::-webkit-scrollbar{width:6px}
.pool-checks::-webkit-scrollbar-thumb{background:#333;border-radius:3px}

/* Responsive: don't shrink the controls width on tablet */
@media(max-width:900px){
  .controls{flex:0 0 100%;width:100%}
  .action-row{grid-template-columns:repeat(4,1fr)}
}

/* ===================== L-SHAPE LAYOUT ===================== */
.sim-container{
  display:grid;
  grid-template-columns:260px 1fr;
  grid-template-areas:
    "left   canvas"
    "bottom bottom"
    "legend legend";
  gap:1rem;
  align-items:stretch;
}
.left-bar{
  grid-area:left;
  display:flex;
  flex-direction:column;
  gap:.8rem;
  background:linear-gradient(180deg,#13131d,#0f0f17);
  border:1px solid var(--card-border);
  border-radius:14px;
  padding:1rem;
}
.canvas-wrap{grid-area:canvas;position:relative;min-width:0}
.canvas-wrap canvas{display:block;width:100%;max-width:100%;height:auto}
.bottom-bar{
  grid-area:bottom;
  display:grid;
  grid-template-columns:1fr auto;
  gap:1rem;
  background:linear-gradient(180deg,#13131d,#0f0f17);
  border:1px solid var(--card-border);
  border-radius:14px;
  padding:1rem;
  align-items:center;
}
.bottom-section{
  border-bottom:none;
  padding-bottom:0;
  display:flex;
  flex-direction:column;
  gap:.55rem;
}
.bottom-controls{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1rem;
}
.bottom-actions{
  display:grid;
  grid-template-columns:repeat(4,minmax(110px,1fr));
  gap:.5rem;
  align-self:end;
}
.sim-legend{grid-area:legend}

/* Make sure .controls styling from earlier doesn't double-up on .left-bar */
.left-bar .ctrl-section{
  display:flex;
  flex-direction:column;
  gap:.55rem;
  padding-bottom:.8rem;
  border-bottom:1px solid #1a1a26;
}
.left-bar .ctrl-section:last-of-type{border-bottom:none;padding-bottom:.3rem}

/* Responsive: collapse L into a single column on narrow screens */
@media(max-width:900px){
  .sim-container{
    grid-template-columns:1fr;
    grid-template-areas:
      "left"
      "canvas"
      "bottom"
      "legend";
  }
  .bottom-bar{grid-template-columns:1fr}
  .bottom-actions{grid-template-columns:repeat(4,1fr)}
}

/* Loop button active state */
.btn.active{background:var(--gold);color:#0a0a0f;border-color:var(--gold)}
.btn.active:hover{background:#d8aa30;color:#0a0a0f}

/* Bottom actions: make room for the 5th button */
@media(min-width:901px){
  .bottom-actions{grid-template-columns:repeat(5,minmax(95px,1fr))}
}

/* ===================== L-SHAPE LAYOUT v2 ===================== */
/* Bottom bar now has 3 columns: View / Collisions / Actions */
.bottom-bar{
  display:grid;
  grid-template-columns:minmax(280px,1.4fr) minmax(180px,.8fr) auto;
  gap:1.2rem;
  align-items:center;
}
.bottom-collisions{
  margin:0;
  padding:.7rem .9rem;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  min-width:160px;
}
.bottom-collisions .collisions-val{font-size:1.7rem;margin:.1rem 0}
.bottom-collisions .collisions-sub{font-size:.68rem;line-height:1.35;text-align:center}
.bottom-actions{
  display:grid;
  grid-template-columns:repeat(5,minmax(86px,1fr));
  gap:.45rem;
}
.bottom-controls{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1rem 1.2rem;
}
.left-bar{
  align-self:start;  /* don't stretch to canvas height; sit at top */
}
@media(max-width:1100px){
  .bottom-bar{grid-template-columns:1fr;gap:.8rem}
  .bottom-actions{grid-template-columns:repeat(5,1fr)}
}

/* ===================== POLISH PASS ===================== */
/* Pool checkboxes: simple vertical list, tightly aligned */
.pool-checks{
  display:flex !important;
  flex-direction:column !important;
  gap:.32rem !important;
  background:#0d0d14;
  border:1px solid #2a2a36;
  border-radius:6px;
  padding:.55rem .7rem;
}
.pool-checks label{
  display:flex !important;
  align-items:center !important;
  justify-content:flex-start !important;
  gap:.55rem !important;
  font-size:.78rem;
  color:var(--text);
  font-weight:500;
  text-transform:none;
  letter-spacing:0;
  cursor:pointer;
  margin:0;
  padding:0;
  text-align:left;
}
.pool-checks input[type=checkbox]{
  accent-color:var(--gold);
  cursor:pointer;
  width:15px;height:15px;
  flex-shrink:0;
  margin:0;
}

/* Canvas: better vertical aspect for the N/S road; sized by container */
.canvas-wrap{min-height:560px}
.canvas-wrap canvas{display:block;width:100%;max-width:100%;height:auto}

/* Bottom bar: give buttons a bit more room */
@media(min-width:901px){
  .bottom-bar{grid-template-columns:minmax(260px,1fr) minmax(150px,.6fr) minmax(380px,1.3fr)}
}

/* Collisions box: slimmer in the bottom bar so it doesn't compete with the buttons */
.bottom-collisions{padding:.6rem .8rem;min-width:140px}
.bottom-collisions .collisions-val{font-size:1.5rem;font-weight:800;margin:.05rem 0}

/* Make canvas overlay buttons more visible against bright road areas */
.canvas-btn{box-shadow:0 1px 3px rgba(0,0,0,.4)}

/* Section headers slightly more contrast */
.ctrl-section-title{color:#8a8aa0;letter-spacing:.2em}

/* ===================== MOBILE / TABLET ===================== */
@media (max-width: 900px) {
  /* Hero: more compact */
  .hero{padding:2.5rem 1rem 1.8rem}
  .hero h1{font-size:1.85rem}
  .hero-sub{font-size:.95rem;margin-bottom:1.2rem}
  .hero-verdict{font-size:.95rem;padding:.75rem 1rem;text-align:left}

  /* Stat cards stack tighter */
  .key-numbers{grid-template-columns:1fr 1fr;gap:.7rem;padding:1rem .8rem}
  .stat-card{padding:.9rem .8rem;border-radius:12px}
  .stat-value{font-size:1.6rem}
  .stat-label{font-size:.8rem}
  .stat-desc{font-size:.7rem;line-height:1.4}

  /* Sections: less side padding */
  section{padding:1.6rem .8rem}
  h2{font-size:1.3rem}
  .section-desc{font-size:.9rem;margin-bottom:1rem}

  /* Sim container: full single column */
  .sim-container{
    display:flex;
    flex-direction:column;
    gap:.8rem;
    grid-template-columns:none;
    grid-template-areas:none;
  }
  .left-bar{
    flex:1 1 auto;
    width:100%;
    padding:.8rem;
    gap:.7rem;
  }
  .ctrl-section{gap:.5rem;padding-bottom:.7rem}
  .ctrl-section-title{font-size:.6rem;letter-spacing:.15em}
  .control-group label{font-size:.82rem}
  .control-group select,
  .control-group input[type=range]{font-size:.95rem;padding:.55rem .55rem}
  .control-group input[type=range]{height:6px}

  /* Pool: 2-col grid on mobile to save vertical space */
  .pool-checks{
    display:grid !important;
    grid-template-columns:1fr 1fr !important;
    gap:.45rem .8rem !important;
    padding:.55rem .6rem;
  }
  .pool-checks label{font-size:.82rem}
  .pool-checks input[type=checkbox]{width:17px;height:17px}  /* easier tap */

  /* Canvas: full width, taller aspect for mobile portrait */
  .canvas-wrap{min-height:auto;width:100%}
  .canvas-wrap canvas{width:100%;height:auto;max-height:80vh}
  .canvas-overlay-toolbar{top:8px;right:8px;gap:4px}
  .canvas-btn{width:38px;height:38px;font-size:1.05rem}

  /* Bottom bar: stack everything */
  .bottom-bar{
    display:flex !important;
    flex-direction:column;
    gap:.8rem;
    padding:.8rem;
  }
  .bottom-controls{grid-template-columns:1fr 1fr;gap:.7rem 1rem}
  .bottom-collisions{padding:.7rem;width:100%}
  .bottom-collisions .collisions-val{font-size:1.6rem}
  .bottom-actions{
    display:grid !important;
    grid-template-columns:repeat(5,1fr);
    gap:.4rem;
  }
  .btn{padding:.65rem .35rem;font-size:.78rem;border-radius:8px}
  .btn-primary{font-weight:700}

  /* Math/debunk: single column */
  .math-grid,.debunk-grid{grid-template-columns:1fr;gap:.8rem}
  .math-card{padding:1rem;border-radius:12px}
  .data-table th,.data-table td{padding:.55rem .55rem;font-size:.8rem}

  /* Methodology + footer */
  .min-radius-card{padding:1.2rem;border-radius:12px}
  footer{padding:1.8rem 1rem;font-size:.78rem}
}

/* Phone-sized (smaller buttons, even tighter) */
@media (max-width: 540px) {
  .bottom-actions{grid-template-columns:repeat(3,1fr)}
  .bottom-actions .btn:nth-child(4),
  .bottom-actions .btn:nth-child(5){grid-column:span 1}
  .key-numbers{grid-template-columns:1fr}
  .hero h1{font-size:1.5rem}
  .hero-verdict span{font-size:.85rem}
}

/* Satellite toggle when active */
.canvas-btn.active{background:var(--gold);color:#0a0a0f;border-color:var(--gold)}

/* ===================== L-SHAPE v3: bottom under canvas only ===================== */
.sim-container{
  display:grid !important;
  grid-template-columns:260px 1fr !important;
  grid-template-areas:
    "left   canvas"
    ".      bottom"
    "legend legend" !important;
  gap:1rem;
}
.left-bar{grid-area:left}
.canvas-wrap{grid-area:canvas}
.bottom-bar{
  grid-area:bottom;
  display:flex !important;
  flex-direction:row;
  align-items:center;
  justify-content:center;
  gap:1.5rem;
  padding:.9rem 1rem;
}
.bottom-collisions{
  margin:0;
  min-width:200px;
  max-width:240px;
  padding:.65rem .9rem;
}
.bottom-actions{
  display:flex !important;
  gap:.5rem;
  flex-wrap:nowrap;
}
.bottom-actions .btn{padding:.6rem .9rem;font-size:.82rem;min-width:78px}

/* Mobile: collapse to single column under canvas */
@media (max-width: 900px){
  .sim-container{
    display:flex !important;
    flex-direction:column !important;
    grid-template-columns:none !important;
    grid-template-areas:none !important;
  }
  .bottom-bar{flex-direction:column;gap:.75rem}
  .bottom-actions{flex-wrap:wrap;justify-content:center}
}

/* Legend above canvas */
.sim-legend.above-canvas{
  grid-area:canvas;       /* sit in the same column as the canvas */
  align-self:start;
  display:flex;
  flex-wrap:wrap;
  gap:.6rem 1rem;
  background:#0f0f17;
  border:1px solid var(--card-border);
  border-radius:8px;
  padding:.55rem .8rem;
  margin-bottom:.6rem;
  font-size:.75rem;
}

/* When the legend takes grid-area canvas, move the actual canvas below it */
.sim-container{grid-template-rows:auto 1fr auto auto}
.sim-container .sim-legend.above-canvas{grid-row:1}
.sim-container .canvas-wrap{grid-row:2}
.sim-container .bottom-bar{grid-row:3}
.sim-container .left-bar{grid-row:1 / span 3}

/* ===================== HELP MODAL ===================== */
.canvas-btn-help{font-weight:800}
.help-modal{
  position:fixed;inset:0;z-index:1000;
  background:rgba(0,0,0,.78);
  display:flex;align-items:center;justify-content:center;
  padding:2rem 1rem;
  overflow-y:auto;
}
.help-modal.hidden{display:none}
.help-card{
  position:relative;
  max-width:1000px;
  width:100%;
  max-height:90vh;
  overflow-y:auto;
  background:linear-gradient(180deg,#15151f,#0f0f17);
  border:1px solid #2a2a36;
  border-radius:14px;
  padding:1.6rem 1.6rem 1.2rem;
  color:var(--text);
  box-shadow:0 20px 60px rgba(0,0,0,.6);
}
.help-close{
  position:absolute;top:.6rem;right:.6rem;
  width:36px;height:36px;
  background:transparent;border:1px solid #2a2a36;
  color:var(--text);font-size:1.4rem;font-weight:700;
  border-radius:8px;cursor:pointer;line-height:1;
}
.help-close:hover{background:rgba(244,67,54,.12);border-color:var(--accent);color:var(--accent)}
.help-card h2{font-size:1.5rem;margin-bottom:.4rem;color:var(--gold)}
.help-intro{color:var(--text-muted);font-size:.9rem;margin-bottom:1.2rem;max-width:780px}
.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.3rem 1.8rem}
.help-grid section h3{
  font-size:.78rem;letter-spacing:.15em;text-transform:uppercase;
  color:#9a9aaa;margin-bottom:.4rem;font-weight:700;
}
.help-grid ul{list-style:none;padding:0;margin:0}
.help-grid li{font-size:.85rem;line-height:1.55;padding:.18rem 0;color:var(--text)}
.help-grid li strong{color:var(--gold)}
.help-grid section p{font-size:.85rem;line-height:1.55}
.help-footer{margin-top:1.3rem;display:flex;justify-content:flex-end;border-top:1px solid #1f1f2a;padding-top:1rem}
.help-footer .btn{padding:.55rem 1.2rem}

@media (max-width:760px){
  .help-grid{grid-template-columns:1fr}
  .help-card{padding:1.2rem .9rem .8rem;max-height:96vh}
  .help-card h2{font-size:1.2rem}
}

/* Help button in action row */
.btn-help{color:var(--gold);border-color:rgba(240,192,64,.35)}
.btn-help:hover{background:rgba(240,192,64,.12);color:var(--gold);border-color:var(--gold)}
@media(min-width:901px){
  .bottom-actions{grid-template-columns:repeat(6,minmax(78px,1fr))}
}
@media(max-width:900px){
  .bottom-actions{grid-template-columns:repeat(3,1fr)}
}

/* ===================== CURVE SELECTOR TABS ===================== */
.curve-tabs{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:.7rem;
  margin-bottom:1rem;
}
.curve-tab{
  background:linear-gradient(180deg,#15151f,#0f0f17);
  border:1px solid #2a2a36;
  border-radius:12px;
  padding:.9rem 1.1rem;
  cursor:pointer;
  text-align:left;
  transition:all .15s;
  color:var(--text);
  font-family:var(--font);
  display:flex;
  flex-direction:column;
  gap:.18rem;
}
.curve-tab:hover{
  border-color:#3d3d50;
  background:linear-gradient(180deg,#1a1a26,#13131d);
}
.curve-tab.active{
  border-color:var(--gold);
  background:linear-gradient(180deg,rgba(240,192,64,.10),rgba(240,192,64,.02));
  box-shadow:inset 0 0 0 1px rgba(240,192,64,.3);
}
.curve-tab.active .curve-tab-title{color:var(--gold)}
.curve-tab-title{
  font-size:1.05rem;
  font-weight:700;
  letter-spacing:.005em;
  color:var(--text);
}
.curve-tab-sub{
  font-size:.78rem;
  color:var(--text-muted);
  font-weight:500;
  font-variant-numeric:tabular-nums;
}
@media(max-width:720px){
  .curve-tabs{grid-template-columns:1fr}
  .curve-tab{padding:.7rem .9rem}
  .curve-tab-title{font-size:.95rem}
}


/* ===================== MARSHROADSAFETY.ORG BRAND + NAV ===================== */
/* CSS variables required by the nav (additive — won't fight the existing palette) */
:root{
  --accent-orange:#e8792b;
  --accent-orange-glow:rgba(232,121,43,0.3);
  --accent-red:#d93025;
  --bg-card:rgba(255,255,255,0.06);
  --bg-card-hover:rgba(255,255,255,0.10);
  --text-primary:#f5f5f5;
  --text-secondary:#d9d9d9;
  --border-subtle:rgba(255,255,255,0.06);
  --transition:all .2s ease;
}
/* Push the page below the fixed nav (72 px tall) */
body{padding-top:72px}
body.nav-open{overflow:hidden}

/* Nav — verbatim from marshroadsafety.org/styles.css */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(10,10,10,0.85);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border-subtle);
  transition:var(--transition);
}
.nav.scrolled{background:rgba(10,10,10,0.95);box-shadow:0 4px 30px rgba(0,0,0,0.5)}
.nav-inner{
  display:flex;align-items:center;justify-content:center;
  width:100%;max-width:1200px;
  margin:0 auto;padding:0 24px;height:72px;
  box-sizing:border-box;gap:32px;
}
.nav-logo img{height:48px;width:auto}
.nav-links{display:flex;gap:4px;list-style:none;align-items:center;flex-wrap:nowrap;margin:0;padding:0}
.nav-links li{flex:0 0 auto}
.nav-links a{
  color:var(--text-secondary);text-decoration:none;
  font-size:.875rem;font-weight:500;
  padding:8px 12px;border-radius:8px;
  transition:var(--transition);
  white-space:nowrap;
  display:inline-block;
}
.nav-links a[aria-current="page"]{color:var(--accent-orange);background:rgba(232,121,43,0.08)}
@media (max-width:1400px){
  .nav-inner{padding:0 16px}
  .nav-links{gap:1px}
  .nav-links a{font-size:.78rem;padding:7px 8px}
  .nav-logo img{height:38px}
}
.nav-links a:hover{color:var(--text-primary);background:var(--bg-card-hover)}
.nav-cta{
  background:var(--accent-orange) !important;color:#fff !important;
  font-weight:600 !important;border-radius:8px !important;
}
.nav-cta:hover{filter:brightness(1.15);transform:translateY(-1px)}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--border-subtle);
  color:var(--text-primary);cursor:pointer;
  align-items:center;gap:10px;
  padding:8px 14px;border-radius:8px;
  font-family:'Outfit','Inter',sans-serif;font-weight:600;font-size:.9rem;
  letter-spacing:.02em;
  transition:var(--transition);
}
.nav-toggle:hover{background:var(--bg-card);border-color:var(--accent-orange);color:var(--accent-orange)}
.nav-toggle .nav-toggle-icon{font-size:1.3rem;line-height:1;transition:transform .2s}
.nav-toggle.is-open .nav-toggle-icon{transform:rotate(90deg)}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(0,0,0,.5);
  z-index:998;opacity:0;pointer-events:none;transition:opacity .2s;
}
.nav-backdrop.open{opacity:1;pointer-events:auto}

/* Mobile: hide the inline links, show the hamburger + drop-down */
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-inner{justify-content:space-between;gap:12px}
  .nav-links{
    display:none;
    position:absolute;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(10,10,10,0.98);
    border-bottom:1px solid var(--border-subtle);
    padding:.4rem 0;
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .nav-links.open{display:flex}
  .nav-links li{flex:1 1 auto}
  .nav-links a{padding:.85rem 1.5rem;border-bottom:1px solid var(--border-subtle);border-radius:0;font-size:.95rem}
  .nav-links a:hover{background:rgba(232,121,43,0.08)}
}