:root,[data-theme=light]{--bg-primary:#f0f4f8;--bg-secondary:#fff;--bg-card:#fff;--bg-card-elevated:#f8fafc;--bg-header:#1b2b4b;--bg-header-secondary:#2d4a7a;--bg-gradient-from:#eaf3ff;--bg-gradient-to:#fff6e5;--gold-gradient-from:#d9b23a;--gold-gradient-to:#c49a1a;--glow:rgba(196,154,26,.12);--text-primary:#1b2b4b;--text-secondary:#64748b;--text-muted:#94a3b8;--text-on-dark:#fff;--accent-gold:#c49a1a;--accent-gold-light:#fffbeb;--accent-gold-border:rgba(196,154,26,.3);--border-color:#e2e8f0;--border-light:#f0f4f8;--nav-glass-bg:hsla(0,0%,100%,.65);--nav-glass-border:hsla(0,0%,100%,.6);--correct:#22c55e;--correct-bg:#dcfce7;--wrong:#f59e0b;--wrong-bg:#fef3c7;--error:#ef4444;--error-bg:#fee2e2;--gold-gradient:linear-gradient(135deg,#f4d879,#c99a1e);--cta-gradient:linear-gradient(135deg,#f6dd86,#c99a1e);--challenge-gradient:linear-gradient(135deg,#fbeab0,#fff);--challenge-text:#1b1b1b;--challenge-text-sub:#6b6b6b;--login-gradient:linear-gradient(160deg,#0f1f3d,#16294a 50%,#1b2b4b);--bg-gradient:linear-gradient(160deg,#eaf3ff,#fff6e5);--nav-bg:#fff;--nav-border:rgba(0,0,0,.08);--nav-active:#c49a1a;--nav-inactive:#9ca3af;--shadow:0 2px 8px rgba(0,0,0,.06);--shadow-lg:0 8px 32px rgba(0,0,0,.1)}[data-theme=dark]{--bg-primary:#080808;--bg-secondary:#141414;--bg-card:#1c1c1c;--bg-card-elevated:#222;--bg-header:#050505;--bg-header-secondary:#111;--text-primary:#f0f0f0;--text-secondary:#a0a0a0;--text-muted:#6e6e6e;--text-on-dark:#f0f0f0;--accent-gold:#d9b23a;--accent-gold-light:rgba(196,154,26,.14);--accent-gold-border:rgba(196,154,26,.35);--border-color:rgba(196,154,26,.2);--border-light:hsla(0,0%,100%,.06);--bg-gradient-from:#0e0c06;--bg-gradient-to:#080808;--gold-gradient-from:#d9b23a;--gold-gradient-to:#c49a1a;--glow:rgba(196,154,26,.15);--nav-glass-bg:rgba(28,28,28,.75);--nav-glass-border:rgba(196,154,26,.2);--correct:#34d399;--correct-bg:rgba(52,211,153,.15);--wrong:#fbbf24;--wrong-bg:rgba(251,191,36,.15);--error:#f87171;--error-bg:hsla(0,91%,71%,.15);--gold-gradient:linear-gradient(135deg,#d9b23a,#c49a1a);--cta-gradient:linear-gradient(135deg,#e2c15a,#b7891a);--challenge-gradient:linear-gradient(135deg,#1e1b12,#161616);--challenge-text:#f0f0f0;--challenge-text-sub:#888;--login-gradient:linear-gradient(160deg,#0a0a0a,#0e0e0e 50%,#141414);--bg-gradient:linear-gradient(160deg,#0e0c06,#080808);--nav-bg:#111;--nav-border:hsla(0,0%,100%,.06);--nav-active:#c49a1a;--nav-inactive:#9a9a9a;--shadow:0 2px 10px rgba(0,0,0,.5);--shadow-lg:0 10px 36px rgba(0,0,0,.6)}[data-theme=colorblind]{--bg-primary:#f5f5f0;--bg-secondary:#fff;--bg-card:#fff;--bg-card-elevated:#fff;--bg-header:#036;--bg-header-secondary:#048;--text-primary:#1a1a1a;--text-secondary:#555;--text-muted:#888;--text-on-dark:#fff;--accent-gold:#e07b00;--accent-gold-light:#fff3e0;--accent-gold-border:rgba(224,123,0,.3);--border-color:#ccc;--border-light:#eee;--nav-glass-bg:hsla(0,0%,100%,.7);--nav-glass-border:hsla(0,0%,100%,.6);--correct:#06c;--correct-bg:#e0f0ff;--wrong:#e07b00;--wrong-bg:#fff3e0;--error:#c04;--error-bg:#ffe0ea;--bg-gradient-from:#f5f5f0;--bg-gradient-to:#f5f5f0;--gold-gradient-from:#f2a03c;--gold-gradient-to:#e07b00;--glow:rgba(224,123,0,.18);--gold-gradient:linear-gradient(135deg,#f2a03c,#e07b00);--cta-gradient:linear-gradient(135deg,#f2a03c,#d06a00);--challenge-gradient:linear-gradient(135deg,#fff0d8,#fff);--challenge-text:#1a1a1a;--challenge-text-sub:#555;--login-gradient:linear-gradient(160deg,#024,#036 50%,#048);--bg-gradient:linear-gradient(160deg,#f5f5f0,#f5f5f0);--nav-bg:#fff;--nav-border:rgba(0,0,0,.08);--nav-active:#e07b00;--nav-inactive:#888;--shadow:0 2px 8px rgba(0,0,0,.08);--shadow-lg:0 8px 32px rgba(0,51,102,.15)}[data-theme-override=arcade]{--bg-primary:#0a0a1a;--bg-secondary:#0f0f2a;--bg-card:hsla(0,0%,100%,.04);--text-primary:#fff;--text-secondary:hsla(0,0%,100%,.6);--border-color:hsla(0,0%,100%,.08)}*,:after,:before{transition:background-color .2s ease,border-color .2s ease,color .1s ease}