/* Games / Labs hub — shared page shell.
 *
 * Extracted verbatim from the inline <style> block in games.html so that
 * games.html and labs.html share one stylesheet instead of duplicating it.
 * Loads after the four shared sheets (vars/reset/globals/layout).
 */
/* ── Games page local vars ── */
:root{--gm-orange:#f97316;--gm-orange-l:rgba(249,115,22,.12);--gm-orange-glow:rgba(249,115,22,.18);}

body{font-family:var(--sans);background:var(--bg);color:var(--text);min-height:100vh;}

/* ── Top nav ── */
.gp-nav{
  background:var(--nav-bg);border-bottom:1px solid var(--border);
  padding:0 2rem;height:58px;display:flex;align-items:center;
  justify-content:space-between;position:sticky;top:0;z-index:200;
}
.gp-brand{font-family:var(--display);font-size:1.15rem;font-weight:800;color:var(--accent);}
.gp-nav-right{display:flex;align-items:center;gap:1rem;}
.gp-xp-pill{
  display:flex;align-items:center;gap:0.6rem;
  background:var(--panel);border-radius:20px;padding:0.3rem 0.8rem;
  font-size:0.78rem;
}
.gp-xp-bar-wrap{width:80px;height:5px;background:var(--border);border-radius:99px;overflow:hidden;}
.gp-xp-bar-fill{height:100%;background:linear-gradient(90deg,var(--gm-orange),#6366f1);border-radius:99px;transition:width .6s;}
.gp-back{
  font-size:0.82rem;font-weight:600;color:var(--text2);
  padding:0.4rem 1rem;border-radius:20px;border:1.5px solid var(--border);
  background:var(--card);transition:all .15s;cursor:pointer;
}
.gp-back:hover{border-color:var(--accent);color:var(--accent);}

/* ── Main content area (full width, no sidebar) ── */
.gm-main{max-width:1280px;margin:0 auto;padding:2.5rem 2rem 4rem;}

/* ── Page show/hide ── */
.gp-page{display:none;}
.gp-page.active{display:block;}
/* Sudoku difficulty buttons */
.sdk-diff-btn{
  padding:0.55rem 1.3rem; border-radius:12px;
  border:2px solid var(--border); background:var(--card,#fff);
  font-size:0.88rem; font-weight:600; color:var(--text2);
  cursor:pointer; font-family:var(--sans); transition:all .15s;
}
.sdk-diff-btn:hover, .sdk-diff-btn.active{
  border-color:var(--accent); color:var(--accent); background:var(--accent-l);
}

/* ── Landing: Hero ── */
.gm-hero-section{
  position:relative;overflow:hidden;
  background:var(--card);border:1px solid var(--border);
  border-radius:24px;margin-bottom:4rem;
}
[data-theme="dark"] .gm-hero-section{
  background:linear-gradient(135deg,#161b2b 0%,#1a1f2f 60%,#0e1322 100%);
  border-color:rgba(255,255,255,.06);
}
.gm-hero-section::before{
  content:'';position:absolute;top:0;right:0;
  width:55%;height:100%;pointer-events:none;
  background:radial-gradient(ellipse at 60% 40%,var(--gm-orange-glow) 0%,transparent 65%);
}
.gm-hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr 1fr;gap:3rem;
  align-items:center;padding:3.5rem 4rem;
}
.gm-hero-eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  background:var(--gm-orange-l);border:1px solid rgba(249,115,22,.25);
  border-radius:20px;padding:.3rem .9rem;
  font-size:.72rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;
  color:var(--gm-orange);margin-bottom:1.2rem;
}
.gm-hero-title{
  font-family:var(--display);font-size:clamp(2rem,4vw,3rem);
  font-weight:800;line-height:1.1;margin-bottom:1rem;color:var(--text);
}
.gm-hero-title span{color:var(--gm-orange);}
.gm-hero-sub{
  font-size:.95rem;color:var(--text2);line-height:1.7;
  max-width:440px;margin-bottom:2rem;
}
.gm-hero-btns{display:flex;gap:.9rem;flex-wrap:wrap;}
.gm-btn-primary{
  background:var(--gm-orange);color:#fff;border:none;
  border-radius:12px;padding:.85rem 1.8rem;
  font-size:.9rem;font-weight:700;font-family:var(--sans);
  cursor:pointer;transition:all .18s;
  box-shadow:0 4px 18px var(--gm-orange-glow);
}
.gm-btn-primary:hover{filter:brightness(1.1);transform:translateY(-2px);}
.gm-btn-secondary{
  background:var(--panel);color:var(--text);
  border:1.5px solid var(--border);border-radius:12px;padding:.85rem 1.8rem;
  font-size:.9rem;font-weight:700;font-family:var(--sans);
  cursor:pointer;transition:all .18s;
}
.gm-btn-secondary:hover{border-color:var(--gm-orange);color:var(--gm-orange);}

/* XP card inside hero */
.gm-xp-card{
  background:var(--panel);border:1px solid var(--border);
  border-radius:18px;padding:2rem;
}
[data-theme="dark"] .gm-xp-card{
  background:rgba(255,255,255,.05);
  border-color:rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.gm-xp-card-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1.5rem;}
.gm-xp-label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text3);margin-bottom:.25rem;}
.gm-xp-rank{font-family:var(--display);font-size:1.1rem;font-weight:800;color:var(--text);}
.gm-xp-badge{
  width:56px;height:56px;border-radius:14px;
  background:var(--gm-orange);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--display);font-size:1rem;font-weight:800;flex-shrink:0;
}
.gm-xp-bar-label{display:flex;justify-content:space-between;font-size:.78rem;font-weight:600;margin-bottom:.5rem;}
.gm-xp-bar-label span:last-child{color:var(--gm-orange);}
.gm-xp-bar-track{height:10px;background:var(--border);border-radius:99px;overflow:hidden;margin-bottom:1.2rem;}
.gm-xp-bar-fill2{
  height:100%;background:var(--gm-orange);border-radius:99px;
  transition:width .6s;
  box-shadow:0 0 10px var(--gm-orange-glow);
}
.gm-xp-info{
  display:flex;align-items:center;gap:.7rem;
  background:rgba(6,182,212,.08);border:1px solid rgba(6,182,212,.2);
  border-radius:10px;padding:.75rem 1rem;
  font-size:.75rem;color:var(--text2);line-height:1.5;
}

/* ── Landing sections ── */
.gm-section{margin-bottom:4.5rem;}
.gm-section-header{
  display:flex;justify-content:space-between;align-items:flex-end;
  margin-bottom:1.8rem;gap:1rem;flex-wrap:wrap;
}
.gm-section-title{
  font-family:var(--display);font-size:1.6rem;font-weight:800;
  color:var(--text);margin-bottom:.3rem;
}
.gm-section-title.cyan{color:#4cd7f6;}
.gm-section-sub{font-size:.88rem;color:var(--text2);}
.gm-filter-pills{display:flex;gap:.5rem;flex-wrap:wrap;}
.gm-filter-pill{
  padding:.45rem 1.1rem;border-radius:20px;
  background:var(--panel);border:1.5px solid var(--border);
  font-size:.8rem;font-weight:600;color:var(--text2);
  cursor:pointer;transition:all .15s;font-family:var(--sans);
}
.gm-filter-pill:hover{border-color:var(--gm-orange);color:var(--gm-orange);}

/* ── Practice Games: 4-col grid ── */
.gm-game-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;}
.gm-game-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:20px;padding:1.6rem;
  display:flex;flex-direction:column;
  transition:border-color .25s,box-shadow .25s,transform .25s;
  cursor:default;
}
[data-theme="dark"] .gm-game-card{
  background:rgba(17,24,39,.7);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-color:rgba(255,255,255,.08);
}
.gm-game-card:hover{
  border-color:var(--gm-orange);
  box-shadow:0 0 24px var(--gm-orange-glow);
  transform:translateY(-4px);
}
.gm-game-card-icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;margin-bottom:1.2rem;flex-shrink:0;
  transition:transform .2s;
}
.gm-game-card:hover .gm-game-card-icon{transform:scale(1.1);}
.gm-game-card-name{font-family:var(--display);font-size:1.05rem;font-weight:800;color:var(--text);margin-bottom:.5rem;}
.gm-game-card-desc{font-size:.83rem;color:var(--text2);line-height:1.6;flex:1;margin-bottom:1.2rem;}
.gm-game-card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:auto;}
.gm-game-card-xp{font-size:.75rem;font-weight:700;color:var(--gm-orange);}
.gm-game-card-play{
  width:42px;height:42px;border-radius:12px;
  background:var(--gm-orange);color:#fff;border:none;
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;cursor:pointer;transition:all .18s;flex-shrink:0;
}
.gm-game-card-play:hover{filter:brightness(1.1);transform:rotate(8deg);}

/* ── Science Lab: 3-col image cards ── */
.gm-lab-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;}
.gm-lab-card{
  position:relative;border-radius:20px;overflow:hidden;
  height:380px;cursor:pointer;
  border:1px solid rgba(255,255,255,.06);
  transition:border-color .25s;
}
.gm-lab-card-bg{
  position:absolute;inset:0;
  transition:transform .6s cubic-bezier(.4,0,.2,1);
}
.gm-lab-card:hover .gm-lab-card-bg{transform:scale(1.05);}
.gm-lab-card-overlay{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(14,19,34,1) 0%,rgba(14,19,34,.55) 50%,transparent 100%);
  padding:2rem;display:flex;flex-direction:column;justify-content:flex-end;
}
[data-theme="light"] .gm-lab-card-overlay{
  background:linear-gradient(to top,rgba(15,15,30,.92) 0%,rgba(15,15,30,.5) 50%,transparent 100%);
}
.gm-lab-badge{
  display:inline-block;
  background:rgba(255,255,255,.1);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.2);
  border-radius:6px;padding:.2rem .7rem;
  font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:#fff;margin-bottom:.9rem;align-self:flex-start;
}
.gm-lab-name{font-family:var(--display);font-size:1.3rem;font-weight:800;color:#fff;margin-bottom:.5rem;}
.gm-lab-desc{font-size:.82rem;color:rgba(255,255,255,.7);line-height:1.6;margin-bottom:1.2rem;}
.gm-lab-open-btn{
  width:100%;padding:1rem;
  background:rgba(30,40,60,.8);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.12);border-radius:12px;
  color:#fff;font-weight:700;font-size:.85rem;font-family:var(--sans);
  cursor:pointer;transition:background .18s;
  display:flex;align-items:center;justify-content:center;gap:.5rem;
}
.gm-lab-open-btn:hover{background:rgba(50,60,80,.9);}

/* ── Brain Games bento ── */
.gm-brain-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1.5rem;}
.gm-brain-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:20px;padding:2rem;
  transition:border-color .25s,box-shadow .25s;
}
[data-theme="dark"] .gm-brain-card{
  background:rgba(17,24,39,.7);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-color:rgba(255,255,255,.08);
}
.gm-brain-card:hover{border-color:var(--gm-orange);box-shadow:0 0 20px var(--gm-orange-glow);}
.gm-brain-card-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.2rem;}
.gm-brain-icon-wrap{
  width:48px;height:48px;border-radius:12px;
  background:var(--panel);
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;flex-shrink:0;
}
.gm-brain-card-title{font-family:var(--display);font-size:1.1rem;font-weight:800;color:var(--text);}
.gm-brain-card-sub{font-size:.72rem;color:var(--text3);margin-top:.1rem;}
.gm-brain-desc{font-size:.85rem;color:var(--text2);line-height:1.6;margin-bottom:1.5rem;}
.gm-chess-links{display:flex;flex-direction:column;gap:.6rem;}
.gm-chess-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:.9rem 1rem;background:var(--panel);border-radius:12px;
  cursor:pointer;transition:background .15s;text-decoration:none;color:var(--text);
  border:1px solid var(--border);
}
.gm-chess-link:hover{background:var(--card);border-color:var(--gm-orange);}
.gm-chess-link-left{display:flex;align-items:center;gap:.7rem;font-size:.85rem;font-weight:600;}
.gm-chess-arrow{font-size:.9rem;color:var(--text3);transition:transform .15s;}
.gm-chess-link:hover .gm-chess-arrow{transform:translateX(3px);color:var(--gm-orange);}
.gm-sdk-diff-row{display:flex;gap:.5rem;margin-bottom:1.2rem;}
.gm-sdk-diff-btn{
  flex:1;padding:.55rem .4rem;border-radius:10px;
  background:var(--panel);border:1.5px solid var(--border);
  font-size:.8rem;font-weight:700;color:var(--text2);
  cursor:pointer;font-family:var(--sans);transition:all .15s;
}
.gm-sdk-diff-btn.active{border-color:var(--gm-orange);color:var(--gm-orange);background:var(--gm-orange-l);}
.gm-ws-subject-row{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:1.2rem;}
.gm-ws-subj-btn{
  padding:.5rem;border-radius:10px;background:var(--panel);
  border:1.5px solid var(--border);font-size:.78rem;font-weight:600;
  color:var(--text2);cursor:pointer;font-family:var(--sans);transition:all .15s;
}
.gm-ws-subj-btn.active{border-color:#03b5d3;color:#03b5d3;background:rgba(3,181,211,.1);}
.gm-brain-cta{
  width:100%;padding:.9rem;border-radius:12px;
  font-weight:700;font-size:.88rem;font-family:var(--sans);
  cursor:pointer;transition:all .18s;display:flex;align-items:center;justify-content:center;gap:.5rem;
}
.gm-brain-cta-orange{background:var(--gm-orange-l);color:var(--gm-orange);border:1.5px solid rgba(249,115,22,.25);}
.gm-brain-cta-orange:hover{background:var(--gm-orange);color:#fff;}
.gm-brain-cta-cyan{background:rgba(3,181,211,.12);color:#03b5d3;border:1.5px solid rgba(3,181,211,.25);}
.gm-brain-cta-cyan:hover{background:#03b5d3;color:#fff;}

/* ── Game page headers (back button + title) ── */
.gm-page-header{
  display:flex;align-items:center;gap:1.2rem;margin-bottom:1.8rem;flex-wrap:wrap;
}
.gm-back-btn{
  display:flex;align-items:center;gap:.4rem;
  padding:.5rem 1.1rem;border-radius:20px;
  background:var(--panel);border:1.5px solid var(--border);
  font-size:.82rem;font-weight:600;color:var(--text2);
  cursor:pointer;transition:all .15s;white-space:nowrap;
}
.gm-back-btn:hover{border-color:var(--gm-orange);color:var(--gm-orange);}
.gm-page-title{font-family:var(--display);font-size:1.4rem;font-weight:800;margin-bottom:0.2rem;}
.gm-page-sub{font-size:0.82rem;color:var(--text3);margin-bottom:1.5rem;}

/* ── Shared utilities (pp-select, bdg-tab, fade-in) ── */
.pp-select{
  background:var(--input-bg,var(--panel));border:1.5px solid var(--border);
  border-radius:10px;padding:.5rem .75rem;font-size:.82rem;
  font-family:var(--sans);color:var(--text);outline:none;transition:border-color .15s;
}
.pp-select:focus{border-color:var(--accent);}
.pp-select option{background:var(--card);color:var(--text);}
.bdg-tab{
  font-size:.78rem;font-weight:600;padding:.35rem .9rem;border-radius:20px;
  border:1.5px solid var(--border);background:transparent;color:var(--text3);
  cursor:pointer;transition:all .15s;
}
.bdg-tab.active,.bdg-tab:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-l);}
@keyframes fadeInUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.fade-in{animation:fadeInUp .3s ease both;}
@keyframes slideUp{from{transform:translateY(30px);opacity:0;}to{transform:translateY(0);opacity:1;}}

/* ── Games section ── */
.gm-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin-bottom: 1.2rem;
}
.gm-tab {
  background: var(--card,#fff);
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem 0.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}
.gm-tab:hover  { border-color: var(--accent); }
.gm-tab.active { border-color: var(--accent); background: var(--accent-l); }
.gm-tab-icon { font-size: 1.6rem; margin-bottom: 0.3rem; }
.gm-tab-name { font-family: var(--display); font-size: 0.8rem; font-weight: 800; color: var(--text); }
.gm-tab-sub  { font-size: 0.65rem; color: var(--text3); margin-top: 2px; }

.gm-picker {
  display: flex; gap: 0.7rem; align-items: center;
  margin-bottom: 1.2rem; flex-wrap: wrap;
}
.gm-start-btn {
  background: var(--accent); color: #fff;
  border: none; border-radius: 10px;
  padding: 0.6rem 1.4rem;
  font-size: 0.85rem; font-weight: 700;
  font-family: var(--sans); cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.gm-start-btn:hover    { background: var(--accent-h); }
.gm-start-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.gm-panel { }
.gm-idle {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--card,#fff);
  border: 1.5px dashed var(--border);
  border-radius: 16px;
}
.gm-idle-icon  { font-size: 3rem; margin-bottom: 0.75rem; }
.gm-idle-title { font-family: var(--display); font-size: 1.3rem; font-weight: 800; margin-bottom: 0.5rem; }
.gm-idle-desc  { font-size: 0.85rem; color: var(--text2); line-height: 1.6; max-width: 480px; margin: 0 auto; }

/* Question card shared across games */
.gm-question-card {
  background: var(--card,#fff);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-top: 1rem;
}
.gm-q-text {
  font-size: 1rem; font-weight: 600; color: var(--text);
  line-height: 1.6; margin-bottom: 1.2rem;
}
.gm-choices { display: flex; flex-direction: column; gap: 0.6rem; }
.gm-choice {
  padding: 0.75rem 1rem;
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  font-size: 0.88rem;
  transition: all 0.12s;
  background: var(--card,#fff);
  color: var(--text);
  text-align: left;
  font-family: var(--sans);
}
.gm-choice:hover:not(:disabled)  { border-color: var(--accent); background: var(--accent-l); }
.gm-choice.correct  { border-color: var(--green); background: var(--green-l); color: var(--green); font-weight: 700; }
.gm-choice.wrong    { border-color: var(--red);   background: var(--red-l);   color: var(--red);   }
.gm-choice.reveal   { border-color: var(--green); background: var(--green-l); opacity: 0.7; }
.gm-choice:disabled { cursor: not-allowed; }

/* Quick Fire */
.qf-header {
  display: flex; align-items: center; gap: 1rem;
  background: var(--card,#fff);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem 1.2rem;
}
.qf-timer {
  font-family: var(--display); font-size: 2rem; font-weight: 800;
  color: var(--accent); flex-shrink: 0; min-width: 52px;
}
.qf-timer.urgent { color: var(--red); animation: pulse 0.5s infinite alternate; }
@keyframes pulse { from { opacity:1 } to { opacity:0.5 } }
.qf-progress { font-size: 0.85rem; font-weight: 600; flex-shrink: 0; }
.qf-bar-wrap { flex: 1; height: 8px; background: var(--border); border-radius: 99px; overflow: hidden; }
.qf-bar { height: 100%; background: var(--accent); border-radius: 99px; transition: width 1s linear; }

/* Flashcards */
.fc-progress-row {
  display: flex; justify-content: space-between;
  font-size: 0.82rem; color: var(--text2);
  margin-bottom: 1rem;
}
.fc-card-wrap { perspective: 1000px; }
.fc-card {
  position: relative; width: 100%; min-height: 260px;
  cursor: pointer; transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(.4,0,.2,1);
  border-radius: 20px;
}
.fc-card.flipped { transform: rotateY(180deg); }
.fc-front, .fc-back {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  background: var(--card,#fff);
}
.fc-back { transform: rotateY(180deg); border-color: var(--green); background: var(--green-l); }
.fc-label { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text3); margin-bottom: 0.8rem; }
.fc-text  { font-size: 1rem; font-weight: 600; color: var(--text); line-height: 1.6; }
.fc-hint  { font-size: 0.72rem; color: var(--text3); margin-top: 1.2rem; }
.fc-explanation { font-size: 0.78rem; color: var(--text2); margin-top: 0.8rem; line-height: 1.5; font-style: italic; }
.fc-actions { display: flex; gap: 0.8rem; margin-top: 1rem; justify-content: center; }
.fc-btn { padding: 0.7rem 1.6rem; border-radius: 12px; font-size: 0.88rem; font-weight: 700; cursor: pointer; font-family: var(--sans); border: none; }
.fc-btn-again { background: var(--red-l); color: var(--red); }
.fc-btn-known { background: var(--green-l); color: var(--green); }
.fc-btn:hover { filter: brightness(0.95); }
.fc-nav { display: flex; gap: 0.6rem; justify-content: center; margin-top: 0.8rem; }
.gm-nav-btn { padding: 0.5rem 1.2rem; border-radius: 10px; border: 1.5px solid var(--border); background: transparent; font-size: 0.82rem; font-weight: 600; cursor: pointer; font-family: var(--sans); color: var(--text2); transition: all 0.15s; }
.gm-nav-btn:hover { border-color: var(--accent); color: var(--accent); }

/* Streak */
.sk-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.sk-streak { font-family: var(--display); font-size: 2.2rem; font-weight: 800; }
.sk-best   { font-size: 0.8rem; color: var(--text3); }

/* Duel */
.dl-scoreboard {
  display: flex; align-items: center; justify-content: center;
  gap: 2rem; margin-bottom: 1rem;
  background: var(--card,#fff); border: 1px solid var(--border);
  border-radius: 16px; padding: 1.2rem;
}
.dl-score-col { text-align: center; flex: 1; }
.dl-sub-label { font-size: 0.75rem; font-weight: 700; color: var(--text2); margin-bottom: 0.3rem; }
.dl-score-val { font-family: var(--display); font-size: 2.5rem; font-weight: 800; color: var(--accent); }
.dl-vs { font-family: var(--display); font-size: 1.2rem; font-weight: 800; color: var(--text3); }
.dl-phase-label { text-align: center; font-size: 0.82rem; font-weight: 700; color: var(--text3); margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: .06em; }
.dl-col-a.active .dl-score-val { color: var(--accent); }
.dl-col-b.active .dl-score-val { color: var(--violet); }

/* Result screen */
.gm-result {
  text-align: center; padding: 2.5rem 1.5rem;
  background: var(--card,#fff); border: 1px solid var(--border);
  border-radius: 20px;
}
.gm-result-icon  { font-size: 3.5rem; margin-bottom: 0.5rem; }
.gm-result-title { font-family: var(--display); font-size: 1.5rem; font-weight: 800; margin-bottom: 0.3rem; }
.gm-result-score { font-size: 3rem; font-weight: 800; font-family: var(--display); margin: 0.5rem 0; }
.gm-result-sub   { font-size: 0.85rem; color: var(--text2); margin-bottom: 1.2rem; }
.gm-result-xp    { display: inline-block; background: var(--accent-l); color: var(--accent); font-weight: 700; font-size: 0.9rem; padding: 0.4rem 1rem; border-radius: 20px; margin-bottom: 1.2rem; }
.gm-play-again   { background: var(--accent); color: #fff; border: none; border-radius: 12px; padding: 0.75rem 2rem; font-size: 0.9rem; font-weight: 700; cursor: pointer; font-family: var(--sans); transition: background 0.15s; }
.gm-play-again:hover { background: var(--accent-h); }

/* XP toast */
.gm-xp-toast {
  position: fixed; bottom: 2rem; right: 2rem;
  background: linear-gradient(135deg, var(--accent), #6366f1);
  color: #fff; font-weight: 700; font-size: 1rem;
  padding: 0.75rem 1.5rem; border-radius: 14px;
  box-shadow: 0 8px 32px rgba(37,99,235,0.3);
  z-index: 999; animation: slideUp 0.4s ease;
}

/* Simulators */
.gm-end-btn {
  display: none;
  background: var(--red-l); color: var(--red);
  border: 1.5px solid #fecaca; border-radius: 10px;
  padding: 0.5rem 1.1rem; font-size: 0.82rem; font-weight: 700;
  cursor: pointer; font-family: var(--sans);
  transition: all 0.15s; margin-bottom: 0.8rem;
}
.gm-end-btn:hover { background: var(--red); color: #fff; }
.gm-sim-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}
@media (max-width: 900px) { .gm-sim-grid { grid-template-columns: repeat(3,1fr); } }
@media (max-width: 600px) { .gm-sim-grid { grid-template-columns: repeat(2,1fr); } }
.gm-sim-card {
  background: var(--card,#fff);
  border: 1.5px solid var(--border);
  border-radius: 14px; padding: 1.1rem;
  cursor: pointer; transition: all 0.15s;
  position: relative;
}
.gm-edu-new { position: absolute; top: 0.55rem; right: 0.55rem; font-size: 0.58rem; font-weight: 800; padding: 0.12rem 0.4rem; border-radius: 20px; background: var(--green); color: #fff; letter-spacing: .02em; }
.gm-sim-card:hover { border-color: var(--accent); box-shadow: 0 4px 16px rgba(0,0,0,0.08); transform: translateY(-2px); }
.gm-sim-emoji { font-size: 2rem; margin-bottom: 0.5rem; }
.gm-sim-name  { font-size: 0.85rem; font-weight: 700; color: var(--text); margin-bottom: 0.25rem; }
.gm-sim-badge { font-size: 0.65rem; font-weight: 700; padding: 0.15rem 0.45rem; border-radius: 20px; background: var(--accent-l); color: var(--accent); display: inline-block; }
/* ── Mini Games ── */
.gm-minigame-tabs { display:flex; gap:0.5rem; margin-bottom:1rem; flex-wrap:wrap; }
.gm-mg-tab {
  padding:0.4rem 1rem; border-radius:20px; border:1.5px solid var(--border);
  background:transparent; font-size:0.82rem; font-weight:600;
  color:var(--text2); cursor:pointer; transition:all .15s; font-family:var(--sans);
}
.gm-mg-tab.active, .gm-mg-tab:hover { border-color:var(--accent); color:var(--accent); background:var(--accent-l); }

/* Sudoku */
.sdk-controls { display:flex; gap:0.6rem; align-items:center; flex-wrap:wrap; margin-bottom:0.8rem; }
.sdk-row-border { border-bottom:2.5px solid var(--text2); }
.sdk-num-btn {
  width:38px; height:38px; border-radius:8px;
  border:1.5px solid var(--border); background:var(--card,#fff);
  font-size:1rem; font-weight:700; cursor:pointer;
  font-family:var(--mono); color:var(--text);
  transition:all .15s;
}
.sdk-num-btn:hover { border-color:var(--accent); color:var(--accent); background:var(--accent-l); }
.sdk-num-btn.erase { font-size:0.75rem; color:var(--red); border-color:var(--red-l); }

/* ── Sudoku: centered, no-color highlight, clear borders ── */
.sdk-board{
  width: min(468px, 100%);
  margin: 0 auto;
  background: var(--text3);
  border: 3px solid var(--text2);
  border-radius: 6px;
  overflow: hidden;
  display: grid;
  grid-template-columns: repeat(9,1fr);
  gap: 1px;
}
.sdk-cell{
  background: var(--card,#fff);
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  font-size: clamp(0.9rem,2.5vw,1.2rem);
  font-weight: 600; font-family: var(--mono);
  cursor: pointer; border: none; outline: none;
  color: var(--text); transition: background 0.1s;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
/* Box borders — thick lines every 3 cols/rows */
.sdk-cell:nth-child(3n)   { border-right: 2.5px solid var(--text2); }
.sdk-cell:nth-child(9n)   { border-right: 1px solid var(--border); }
.sdk-cell:nth-child(n+19):nth-child(-n+27) { border-bottom: 2.5px solid var(--text2); }
.sdk-cell:nth-child(n+46):nth-child(-n+54) { border-bottom: 2.5px solid var(--text2); }
/* States — NO background change on highlight, only subtle text color */
.sdk-cell.given    { color: var(--text); font-weight: 800; }
.sdk-cell.selected { box-shadow: inset 0 0 0 2.5px var(--accent) !important; background: var(--card,#fff) !important; }
.sdk-cell.highlight{ box-shadow: inset 0 0 0 1.5px rgba(37,99,235,0.35) !important; background: var(--card,#fff) !important; }
.sdk-cell.error    { color: var(--red) !important; background: var(--card,#fff) !important; }
.sdk-cell.correct  { color: var(--accent); }
.sdk-numpad{
  display: flex; gap: 0.45rem; margin: 0.7rem auto 0;
  flex-wrap: wrap; max-width: min(468px,100%);
  justify-content: center;
}
.sdk-controls{ justify-content: center; }

/* ── Word Search: centered, larger cells ── */
.ws-wrap{
  display: flex; gap: 2rem; flex-wrap: wrap;
  align-items: flex-start; justify-content: center;
  margin: 0 auto;
}
.ws-grid{
  display: grid;
  border: 2px solid var(--border);
  border-radius: 12px; overflow: hidden;
  user-select: none;
  flex-shrink: 0;
  margin: 0 auto;
}
.ws-cell{
  width: 2.4em; height: 2.4em;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; border: 1px solid var(--border);
  color: var(--text); font-size: 0.95rem; font-weight: 700;
  font-family: var(--mono); transition: background .08s;
  background: var(--card,#fff);
}
.ws-wordlist{
  display: flex; flex-direction: column; gap: 0.4rem;
  min-width: 160px;
}
.ws-word{
  font-size: 0.85rem; font-weight: 600; color: var(--text2);
  padding: .3rem .6rem; border-radius: 6px; transition: all .2s;
}
.ws-word.found{ text-decoration: line-through; color: var(--green); background: var(--green-l); }
.ws-cell:hover   { background: var(--accent-l); }
.ws-cell.selecting{ background: var(--accent-l); }
.ws-cell.found   { background: var(--green-l); color: var(--green); }

/* ── Chess section ── */
.chess-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.8rem;margin-bottom:1rem;}

/* ── Sims ── */
.gm-source-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem;margin-bottom:1.2rem;}
.gm-src-tab{display:flex;flex-direction:column;align-items:center;padding:.8rem .5rem;border-radius:14px;border:2px solid var(--border);background:var(--card,#fff);cursor:pointer;transition:all .15s;gap:.15rem;}
.gm-src-tab:hover{border-color:var(--accent);}
.gm-src-tab.active{border-color:var(--accent);background:var(--accent-l);}
.gm-src-icon{font-size:1.5rem;}
.gm-src-name{font-family:var(--display);font-size:.82rem;font-weight:800;color:var(--text);}
.gm-src-count{font-size:.65rem;color:var(--text3);}
.gm-src-desc{font-size:.82rem;color:var(--text2);margin-bottom:.9rem;line-height:1.5;}
.gm-sim-filters{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:1rem;}

/* ── iframe modal ── */
.gm-sim-modal{position:fixed;inset:0;background:rgba(0,0,0,.75);z-index:9999;display:flex;align-items:center;justify-content:center;padding:1rem;}
.gm-sim-modal-inner{width:100%;max-width:1200px;height:94vh;background:var(--card);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;}
.gm-sim-modal-header{display:flex;justify-content:space-between;align-items:center;padding:.8rem 1.2rem;border-bottom:1px solid var(--border);font-weight:700;font-size:.95rem;background:var(--panel);}
.gm-sim-close{background:var(--border);border:none;border-radius:8px;padding:.4rem .9rem;cursor:pointer;font-weight:600;font-size:.82rem;color:var(--text);}
.gm-sim-close:hover{background:var(--text3);color:#fff;}
.gm-sim-iframe{flex:1;border:none;width:100%;}

/* ── EduSpark Labs section ── */
.es-lab-toolbar{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;margin-bottom:1.2rem;}
.es-lab-filters{display:flex;gap:.4rem;flex-wrap:wrap;}
.es-lab-pill{padding:.4rem 1rem;border-radius:20px;border:1.5px solid var(--border);background:var(--card);color:var(--text2);font-family:var(--sans);font-size:.8rem;font-weight:600;cursor:pointer;transition:all .15s;}
.es-lab-pill:hover{border-color:var(--accent);color:var(--accent);}
.es-lab-pill.active{background:var(--accent);border-color:var(--accent);color:#fff;}
.es-lab-search{padding:.5rem .9rem;border-radius:10px;border:1.5px solid var(--border);background:var(--card);color:var(--text);font-family:var(--sans);font-size:.82rem;min-width:200px;}
.es-lab-search:focus{outline:none;border-color:var(--accent);background:var(--card);}
.es-lab-empty{text-align:center;color:var(--text3);padding:2rem;font-size:.9rem;}

.es-lab-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:1.1rem;display:flex;flex-direction:column;gap:.6rem;transition:all .15s;box-shadow:var(--shadow);}
.es-lab-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.es-lab-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem;}
.es-lab-card-name{font-family:var(--display);font-size:.95rem;font-weight:800;color:var(--text);line-height:1.3;}
.es-lab-card-badge{font-size:.62rem;font-weight:700;padding:.18rem .5rem;border-radius:6px;background:var(--accent-l);color:var(--accent);white-space:nowrap;}
.es-lab-card-actions{display:flex;gap:.5rem;margin-top:auto;}
.es-lab-btn{flex:1;padding:.5rem .8rem;border-radius:9px;font-family:var(--sans);font-size:.78rem;font-weight:700;cursor:pointer;border:none;transition:filter .15s;}
.es-lab-btn-open{background:var(--panel);color:var(--text);border:1.5px solid var(--border);}
.es-lab-btn-open:hover{border-color:var(--accent);color:var(--accent);}
.es-lab-btn-quiz{background:var(--accent);color:#fff;}
.es-lab-btn-quiz:hover{filter:brightness(1.08);}

/* ── Lab quiz modal ── */
.es-quiz-modal{position:fixed;inset:0;background:rgba(0,0,0,.75);z-index:10000;display:flex;align-items:center;justify-content:center;padding:1rem;}
.es-quiz-modal[hidden]{display:none;}
.es-quiz-inner{width:100%;max-width:560px;max-height:90vh;background:var(--card);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;}
.es-quiz-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.3rem;border-bottom:1px solid var(--border);font-family:var(--display);font-weight:800;font-size:1rem;color:var(--text);background:var(--panel);}
.es-quiz-close{background:var(--border);border:none;border-radius:8px;width:30px;height:30px;cursor:pointer;font-weight:600;color:var(--text);}
.es-quiz-close:hover{background:var(--text3);color:#fff;}
.es-quiz-body{padding:1.3rem;overflow-y:auto;}
.es-quiz-q{font-size:.95rem;font-weight:600;color:var(--text);margin-bottom:1rem;line-height:1.5;}
.es-quiz-prog{font-size:.75rem;color:var(--text3);margin-bottom:.8rem;font-weight:600;}
.es-quiz-opt{display:block;width:100%;text-align:left;padding:.7rem 1rem;margin-bottom:.6rem;border-radius:10px;border:1.5px solid var(--border);background:var(--card);color:var(--text);cursor:pointer;font-family:var(--sans);font-size:.85rem;transition:all .15s;}
.es-quiz-opt:hover:not(:disabled){border-color:var(--accent);background:var(--accent-l);}
.es-quiz-opt:disabled{cursor:default;}
.es-quiz-opt.correct{border-color:var(--green);background:var(--green-l);color:var(--green);font-weight:700;}
.es-quiz-opt.wrong{border-color:var(--red);background:var(--red-l);color:var(--red);}
.es-quiz-result{text-align:center;}
.es-quiz-score{font-family:var(--display);font-size:2.2rem;font-weight:800;color:var(--accent);margin:.5rem 0;}
.es-quiz-msg{font-size:.9rem;color:var(--text2);line-height:1.6;margin-bottom:1.2rem;}
.es-quiz-gate{background:var(--accent-l);border:1px solid var(--accent-b);border-radius:12px;padding:1.1rem;margin-bottom:1rem;}
.es-quiz-gate-title{font-family:var(--display);font-weight:800;color:var(--accent);font-size:1rem;margin-bottom:.4rem;}
.es-quiz-gate-sub{font-size:.82rem;color:var(--text2);line-height:1.5;}
.es-quiz-cta{display:inline-block;padding:.6rem 1.4rem;border-radius:50px;background:var(--accent);color:#fff;font-weight:700;font-size:.85rem;text-decoration:none;border:none;cursor:pointer;font-family:var(--sans);}
.es-quiz-cta:hover{filter:brightness(1.08);}
.es-quiz-ok{color:var(--green);font-weight:700;}

/* ── Hub label in nav ── */
.gp-hub-label{
  background:var(--gm-orange-l);color:var(--gm-orange);
  font-size:.72rem;padding:.15rem .7rem;border-radius:20px;
  font-weight:700;margin-left:.5rem;vertical-align:middle;
}

/* ── Footer ── */
.gm-footer{
  background:var(--nav-bg);border-top:1px solid var(--border);
  margin-top:4rem;padding:3rem 2rem;
}
.gm-footer-inner{
  max-width:1280px;margin:0 auto;
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;
}
.gm-footer-brand{font-family:var(--display);font-size:1.1rem;font-weight:800;color:var(--gm-orange);margin-bottom:.8rem;}
.gm-footer-tagline{font-size:.83rem;color:var(--text2);line-height:1.6;margin-bottom:1rem;}
.gm-footer-col-title{font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--text);margin-bottom:1rem;}
.gm-footer-links{display:flex;flex-direction:column;gap:.7rem;}
.gm-footer-link{font-size:.85rem;color:var(--text2);text-decoration:none;transition:color .15s;}
.gm-footer-link:hover{color:var(--gm-orange);}
.gm-footer-bottom{max-width:1280px;margin:.5rem auto 0;border-top:1px solid var(--border);padding-top:1.2rem;text-align:center;font-size:.75rem;color:var(--text3);}

/* ── Mobile responsive ── */
@media (max-width: 900px) {
  .gm-hero-inner{grid-template-columns:1fr;padding:2.5rem 2rem;}
  .gm-hero-section::before{width:100%;height:40%;}
  .gm-game-cards{grid-template-columns:repeat(2,1fr);}
  .gm-lab-cards{grid-template-columns:repeat(2,1fr);}
  .gm-brain-grid{grid-template-columns:1fr;}
  .gm-footer-inner{grid-template-columns:1fr 1fr;}
}
@media (max-width: 640px) {
  .gm-main{padding:1.5rem 1rem 3rem;}
  .gp-brand{font-size:1rem;}
  .gp-xp-pill{display:none;}
  .gm-game-cards{grid-template-columns:1fr 1fr;}
  .gm-lab-cards{grid-template-columns:1fr;}
  .gm-section-header{flex-direction:column;align-items:flex-start;}
  .gm-tabs{grid-template-columns:repeat(2,1fr)!important;gap:.5rem;}
  .gm-tab-sub{display:none;}
  .gm-sim-grid{grid-template-columns:repeat(2,1fr)!important;}
  .fc-card{min-height:200px;}
  .fc-front,.fc-back{padding:1.2rem;}
  .dl-scoreboard{gap:.8rem;padding:.8rem;}
  .dl-score-val{font-size:1.8rem;}
  .sdk-board{width:100%!important;}
  .sdk-num-btn{width:32px;height:32px;font-size:.9rem;}
  .ws-cell{width:1.9em;height:1.9em;font-size:.8rem;}
  .ws-wrap{flex-direction:column;}
  .ws-wordlist{flex-direction:row;flex-wrap:wrap;gap:.3rem;}
  .gm-picker{flex-wrap:wrap;gap:.5rem;}
  .gm-start-btn{flex:1;min-width:120px;}
  .gm-footer-inner{grid-template-columns:1fr;}
}
@media (max-width:400px){
  .gm-sim-grid{grid-template-columns:1fr!important;}
  .gm-game-cards{grid-template-columns:1fr;}
}


/* brand logo images */
.brand-img{width:auto;display:block}
.gp-brand .brand-img{height:34px}
.gm-footer-brand .brand-img{height:30px}
.gp-brand,.gm-footer-brand{display:flex;align-items:center;gap:.5rem}
.logo-light{display:none}
.logo-dark{display:block}
[data-theme="light"] .logo-light{display:block}
[data-theme="light"] .logo-dark{display:none}