:root {
  --bg: #0b0d13;
  --bg2: #111520;
  --surface: #171b28;
  --surface2: #1e2336;
  --border: rgba(196,163,82,0.18);
  --border2: rgba(196,163,82,0.35);
  --gold: #c4a352;
  --gold-light: #e0bc6a;
  --gold-glow: rgba(196,163,82,0.15);
  --text: #ede9df;
  --text-muted: #7a8098;
  --text-dim: #4e5468;
  --correct: #22c55e;
  --correct-bg: rgba(34,197,94,0.1);
  --correct-border: rgba(34,197,94,0.35);
  --wrong: #ef4444;
  --wrong-bg: rgba(239,68,68,0.1);
  --wrong-border: rgba(239,68,68,0.35);
  --radius: 10px;
  --radius-lg: 16px;
}
/* ── LIGHT MODE OVERRIDES ── */
[data-theme="light"] {
  --bg: #f7f5ef;
  --bg2: #edeae0;
  --surface: #ffffff;
  --surface2: #f0ece0;
  --border: rgba(180,145,60,0.22);
  --border2: rgba(180,145,60,0.45);
  --gold: #9a7420;
  --gold-light: #b8922a;
  --gold-glow: rgba(180,145,60,0.12);
  --text: #1c1a14;
  --text-muted: #5c5848;
  --text-dim: #a09880;
  --correct: #16a34a;
  --correct-bg: rgba(22,163,74,0.09);
  --correct-border: rgba(22,163,74,0.3);
  --wrong: #dc2626;
  --wrong-bg: rgba(220,38,38,0.09);
  --wrong-border: rgba(220,38,38,0.3);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--text);
  font-family:'Be Vietnam Pro',sans-serif;min-height:100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%,rgba(196,163,82,0.07) 0%,transparent 70%),
    linear-gradient(rgba(196,163,82,0.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(196,163,82,0.025) 1px,transparent 1px);
  background-size:100% 100%,48px 48px,48px 48px;
}
.screen{display:none}
.screen.active{display:flex;flex-direction:column}

/* ── HOME ── */
#home{min-height:100vh;align-items:center;justify-content:center;padding:48px 20px 80px}
.brand{text-align:center;margin-bottom:40px}
.brand-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:10px;letter-spacing:3.5px;text-transform:uppercase;
  color:var(--gold);font-weight:600;margin-bottom:22px;
}
.brand-eyebrow::before,.brand-eyebrow::after{content:'';display:block;width:28px;height:1px;background:var(--gold);opacity:.5}
.brand h1{
  font-family:'Lora',serif;font-size:clamp(30px,6vw,52px);
  font-weight:700;line-height:1.15;color:var(--text);letter-spacing:-.5px;
}
.brand h1 em{color:var(--gold);font-style:normal}
.brand-sub{margin-top:12px;font-size:13px;color:var(--text-muted);letter-spacing:.5px}
.brand-count{
  display:inline-block;background:var(--gold-glow);border:1px solid var(--border);
  color:var(--gold);font-size:11px;font-weight:600;letter-spacing:1.5px;
  padding:4px 10px;border-radius:4px;margin-left:8px;
}
.card{width:100%;max-width:560px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 32px}
.section-label{font-size:10px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--gold);opacity:.75;margin-bottom:12px}

/* mode segmented control */
.mode-tabs{display:flex;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:4px;gap:4px}
.mode-tab{
  flex:1;padding:10px;border:1px solid transparent;border-radius:calc(var(--radius) - 2px);
  background:transparent;color:var(--text-muted);
  font-family:'Be Vietnam Pro',sans-serif;font-size:13px;font-weight:500;
  cursor:pointer;transition:all .15s;
}
.mode-tab:hover:not(.active){color:var(--text)}
.mode-tab.active{background:var(--surface2);border-color:var(--border2);color:var(--gold);font-weight:600}

/* count buttons */
.btn-group{display:flex;gap:8px;flex-wrap:wrap}
.count-btn{
  flex:1;min-width:60px;padding:12px 8px;
  background:var(--bg2);border:1px solid var(--border);
  color:var(--text-muted);border-radius:var(--radius);
  cursor:pointer;font-size:14px;font-weight:500;
  font-family:'Be Vietnam Pro',sans-serif;transition:all .15s;
}
.count-btn:hover:not(.active){border-color:var(--border2);color:var(--text)}
.count-btn.active{background:var(--gold-glow);border-color:var(--gold);color:var(--gold);font-weight:600}

/* range select */
.range-row{margin-bottom:24px}
.styled-select{position:relative;margin-top:4px}
.styled-select select{
  width:100%;padding:12px 40px 12px 14px;background:var(--bg2);border:1px solid var(--border);
  color:var(--text);border-radius:var(--radius);font-size:13.5px;font-family:'Be Vietnam Pro',sans-serif;
  cursor:pointer;appearance:none;transition:border-color .15s;
}
.styled-select select:focus{outline:none;border-color:var(--gold)}
.styled-select select option{background:var(--surface2)}
.styled-select::after{
  content:'';position:absolute;right:14px;top:50%;transform:translateY(-50%);
  width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid var(--gold);pointer-events:none;
}

/* toggles */
.toggle-group{display:flex;flex-direction:column}
.toggle-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border)}
.toggle-row:last-child{border-bottom:none}
.toggle-title{font-size:14px;color:var(--text)}
.toggle-desc{font-size:12px;color:var(--text-muted);margin-top:2px}
.toggle-sw{position:relative;width:44px;height:24px;flex-shrink:0;margin-left:20px}
.toggle-sw input{opacity:0;width:0;height:0;position:absolute}
.toggle-track{position:absolute;inset:0;border-radius:24px;background:var(--bg2);border:1px solid var(--border);cursor:pointer;transition:all .2s}
.toggle-track::after{content:'';position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:var(--text-dim);transition:all .2s}
.toggle-sw input:checked + .toggle-track{background:var(--gold-glow);border-color:var(--gold)}
.toggle-sw input:checked + .toggle-track::after{transform:translateX(20px);background:var(--gold)}

.start-btn{
  width:100%;max-width:560px;margin-top:18px;padding:17px;
  background:var(--gold);border:none;border-radius:var(--radius);color:#0b0d13;
  font-family:'Be Vietnam Pro',sans-serif;font-size:14px;font-weight:700;
  letter-spacing:2.5px;text-transform:uppercase;cursor:pointer;transition:all .2s;
}
.start-btn:hover{background:var(--gold-light);transform:translateY(-2px);box-shadow:0 8px 32px rgba(196,163,82,0.25)}
.start-btn:active{transform:translateY(0)}

.site-footer{
  position:fixed;bottom:0;left:0;right:0;z-index:100;
  background:var(--bg2);border-top:1px solid var(--border);
  padding:10px 20px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-dim);
}
.site-footer a{color:var(--text-muted);text-decoration:none;transition:color .15s}
.site-footer a:hover{color:var(--gold)}

.theme-toggle{
  position:fixed;top:16px;right:16px;z-index:200;
  background:none;border:none;padding:0;cursor:pointer;
}
.tog-track{
  position:relative;width:54px;height:28px;
  background:var(--surface2);border:1px solid var(--border2);
  border-radius:14px;display:flex;align-items:center;
  justify-content:space-between;padding:0 7px;
  box-shadow:0 2px 8px rgba(0,0,0,0.18);
  transition:background .25s, border-color .25s;
}
.theme-toggle:hover .tog-track{border-color:var(--gold)}
.tog-knob{
  position:absolute;top:3px;left:3px;
  width:20px;height:20px;border-radius:50%;
  background:var(--gold);
  box-shadow:0 1px 4px rgba(0,0,0,0.25);
  transition:transform .25s cubic-bezier(.4,0,.2,1);
  z-index:1;
}
[data-theme="light"] .tog-knob{transform:translateX(26px)}
.tog-icon{
  width:11px;height:11px;flex-shrink:0;
  position:relative;z-index:2;
  transition:color .25s;
}
.tog-moon{color:var(--gold)}
.tog-sun{color:var(--text-dim)}
[data-theme="light"] .tog-moon{color:var(--text-dim)}
[data-theme="light"] .tog-sun{color:var(--gold)}

/* ── QUIZ ── */
#quiz{min-height:100vh;max-width:700px;margin:0 auto;width:100%;padding:0 20px 80px}
.quiz-header{
  position:sticky;top:0;z-index:10;
  background:linear-gradient(var(--bg) 85%,transparent);
  padding:20px 0 16px;margin-bottom:8px;
}
.quiz-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.quiz-counter{font-size:13px;color:var(--text-muted)}
.quiz-counter strong{color:var(--text);font-weight:600}
.quiz-scores{display:flex;gap:18px;font-size:13px;font-weight:500}
.s-ok{color:var(--correct)}
.s-bad{color:var(--wrong)}
.pbar{height:2px;background:rgba(196,163,82,0.15);border-radius:2px;overflow:hidden}
.pbar-fill{height:100%;background:linear-gradient(90deg,var(--gold),var(--gold-light));border-radius:2px;transition:width .4s ease}

.q-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:26px 28px;margin-bottom:14px;animation:fadeUp .25s ease}
.q-label{font-size:10px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--gold);opacity:.8;margin-bottom:14px}
.q-text{font-size:16px;line-height:1.7;color:var(--text)}

.options{display:flex;flex-direction:column;gap:9px;margin-bottom:14px}
.opt-btn{
  display:flex;align-items:center;gap:14px;padding:13px 16px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  cursor:pointer;text-align:left;font-family:'Be Vietnam Pro',sans-serif;font-size:14px;
  color:var(--text);transition:all .15s;animation:fadeUp .2s ease both;width:100%;
}
.opt-btn:hover:not(:disabled){border-color:var(--border2);background:rgba(196,163,82,0.04)}
.opt-key{
  width:30px;height:30px;flex-shrink:0;border-radius:7px;
  background:var(--bg2);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;text-transform:uppercase;color:var(--text-muted);transition:all .15s;
}
.opt-text{line-height:1.5;flex:1}
.opt-btn:disabled{cursor:default}
.opt-btn.state-correct{background:var(--correct-bg);border-color:var(--correct-border)}
.opt-btn.state-correct .opt-key{background:var(--correct);border-color:var(--correct);color:#fff}
.opt-btn.state-wrong{background:var(--wrong-bg);border-color:var(--wrong-border)}
.opt-btn.state-wrong .opt-key{background:var(--wrong);border-color:var(--wrong);color:#fff}


.next-btn{
  width:100%;padding:15px;background:transparent;border:1px solid var(--border2);color:var(--gold);
  border-radius:var(--radius);font-family:'Be Vietnam Pro',sans-serif;font-size:14px;
  font-weight:600;letter-spacing:1.5px;text-transform:uppercase;cursor:pointer;transition:all .15s;
  display:none;margin-bottom:12px;
}
.next-btn.show{display:block;animation:fadeUp .2s ease}
.next-btn:hover{background:var(--gold-glow);border-color:var(--gold)}

.back-link{
  background:none;border:none;color:var(--text-muted);font-family:'Be Vietnam Pro',sans-serif;
  font-size:13px;cursor:pointer;padding:0;display:flex;align-items:center;gap:5px;transition:color .15s;
}
.back-link:hover{color:var(--text)}

/* ── SUMMARY / RESULT ── */
#result{min-height:100vh;align-items:stretch;padding:0}

.sum-outer{max-width:720px;margin:0 auto;width:100%;padding:0 20px 100px}

.sum-score-block{
  position:sticky;top:0;z-index:10;
  background:linear-gradient(var(--bg) 90%,transparent);
  padding:28px 0 16px;margin-bottom:4px;
}
.sum-toprow{display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:20px}
.sum-title-wrap{}
.sum-emoji{font-size:36px;line-height:1;display:block;margin-bottom:8px}
.sum-title{font-family:'Lora',serif;font-size:clamp(22px,4vw,30px);font-weight:700;color:var(--text)}
.sum-desc{font-size:13px;color:var(--text-muted);margin-top:4px}
.sum-actions{display:flex;gap:10px;flex-shrink:0;padding-top:4px}

.stats-strip{display:flex;gap:12px;flex-wrap:wrap}
.stat-chip{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:14px 22px;
  display:flex;flex-direction:column;align-items:center;min-width:90px;
}
.stat-chip .num{font-family:'Lora',serif;font-size:28px;font-weight:700;line-height:1}
.stat-chip .num.ok{color:var(--correct)}
.stat-chip .num.bad{color:var(--wrong)}
.stat-chip .num.pct{color:var(--gold)}
.stat-chip .lbl{font-size:11px;color:var(--text-muted);margin-top:5px;letter-spacing:.5px}

/* review list */
.review-header-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 0 12px;border-top:1px solid var(--border);margin-top:4px;
}
.review-header-bar .rh-title{font-size:11px;font-weight:700;letter-spacing:2.5px;text-transform:uppercase;color:var(--gold);opacity:.8}
.review-header-bar .rh-counts{font-size:12px;color:var(--text-muted)}

/* filter tabs */
.filter-tabs{display:flex;gap:6px;margin-bottom:16px}
.f-tab{
  padding:6px 14px;border-radius:20px;font-size:12px;font-weight:600;
  border:1px solid var(--border);color:var(--text-muted);background:transparent;
  cursor:pointer;font-family:'Be Vietnam Pro',sans-serif;transition:all .15s;letter-spacing:.3px;
}
.f-tab.active{background:var(--gold-glow);border-color:var(--gold);color:var(--gold)}
.f-tab:hover:not(.active){border-color:var(--border2);color:var(--text)}

.review-list{display:flex;flex-direction:column;gap:10px}

.rev-item{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:18px 20px;
  border-left:3px solid transparent;transition:border-color .15s;
}
.rev-item.item-ok{border-left-color:var(--correct)}
.rev-item.item-bad{border-left-color:var(--wrong)}

.rev-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.rev-num{font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--text-muted)}
.rev-status{font-size:11px;font-weight:700;letter-spacing:.5px;padding:3px 9px;border-radius:20px}
.rev-status.sok{color:var(--correct);background:var(--correct-bg);border:1px solid var(--correct-border)}
.rev-status.sbad{color:var(--wrong);background:var(--wrong-bg);border:1px solid var(--wrong-border)}

.rev-q{font-size:14px;line-height:1.6;color:var(--text);margin-bottom:12px}

.rev-answers{display:flex;flex-direction:column;gap:7px}
.rev-ans-row{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:8px;
  border:1px solid transparent;
}
.rev-ans-row.row-ok{background:var(--correct-bg);border-color:var(--correct-border)}
.rev-ans-row.row-bad{background:var(--wrong-bg);border-color:var(--wrong-border)}
.rev-text{font-size:13px;line-height:1.4;flex:1}
.row-ok .rev-text{color:var(--correct)}
.row-bad .rev-text{color:var(--wrong)}
.rev-icon{font-size:15px;flex-shrink:0;line-height:1}

.r-btn{
  padding:11px 22px;border-radius:var(--radius);font-family:'Be Vietnam Pro',sans-serif;
  font-size:13px;font-weight:600;cursor:pointer;letter-spacing:.5px;transition:all .15s;
}
.r-btn.primary{background:var(--gold);border:none;color:#0b0d13}
.r-btn.primary:hover{background:var(--gold-light)}
.r-btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text-muted)}
.r-btn.ghost:hover{border-color:var(--border2);color:var(--text)}

@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

@media(max-width:500px){
  .card{padding:22px 20px}
  .q-card{padding:20px}
  .opt-btn{padding:12px 14px}
  .sum-toprow{flex-direction:column}
  .sum-actions{width:100%}
  .sum-actions .r-btn{flex:1}
  .stats-strip{justify-content:center}
}