@import 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3rem);--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem}.dark{--bg:#05070a;--surface:#0d131b;--surface-2:#131a24;--border:#212a37;--text-primary:#f3f6f9;--text-secondary:#94a3b8;--text-faint:#5b6675;--color-primary:#14b8a6;--color-primary-strong:#2dd4bf;--color-primary-bg:#14b8a624;--color-info:#38bdf8;--color-info-strong:#7dd3fc;--color-info-bg:#38bdf824;--color-warning:#f59e0b;--color-warning-strong:#fbbf24;--color-warning-bg:#f59e0b24;--color-danger:#fb7185;--color-danger-strong:#fca5a5;--color-danger-bg:#fb71851a;--color-violet:#a78bfa;--color-violet-strong:#c4b5fd;--color-violet-bg:#8b5cf624;--emerald-50:#10b9811a;--emerald-100:#10b98124;--emerald-200:#10b98138;--emerald-300:#6ee7b7;--emerald-400:#34d399;--emerald-500:#10b981;--emerald-600:#34d399;--emerald-700:#6ee7b7;--emerald-800:#a7f3d0;--blue-50:#3b82f61a;--blue-100:#3b82f629;--blue-200:#3b82f638;--blue-800:#93c5fd;--blue-900:#bfdbfe;--amber-500:#fbbf24;--bg-secondary:var(--surface-2);--bg-muted:var(--surface-2);--surface-overlay:#0d131bf2;--surface-active:#1e293b;--text-on-primary:#05070a;--text-on-accent:#05070a;--shadow-xs:0 1px 2px #0000004d;--shadow-sm:0 1px 3px #00000059, 0 1px 2px #0003;--shadow-md:0 4px 6px -1px #0000004d, 0 2px 4px -2px #0003;--shadow-lg:0 10px 15px -3px #00000059, 0 4px 6px -4px #0003;--shadow-xl:0 20px 25px -5px #00000059, 0 8px 10px -6px #00000026;--shadow-glow:0 0 0 3px #14b8a626, 0 8px 24px #14b8a614;--shadow-glow-accent:var(--shadow-glow)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;height:100%;overflow:hidden}.exam-layout{height:calc(100vh - 60px);display:flex}.exam-sidebar{border-right:1px solid var(--border);width:230px}body{background-color:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color var(--duration-normal) var(--ease-smooth), color var(--duration-normal) var(--ease-smooth);height:100%;margin:0;padding:0;font-family:Noto Sans,-apple-system,BlinkMacSystemFont,Segoe 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1.25rem;font-family:Figtree,system-ui,sans-serif;font-size:.9375rem;font-weight:600;text-decoration:none;display:inline-flex;position:relative;overflow:hidden}.btn:after{content:"";pointer-events:none;background:linear-gradient(#ffffff1f 0%,#0000 50%);position:absolute;inset:0}.btn-primary,.btn-accent{background:var(--color-primary);color:var(--text-on-primary);box-shadow:0 2px 8px #0f766e40,0 1px 2px #0f766e26}.btn-primary:hover,.btn-accent:hover{background:var(--color-primary-strong);transform:translateY(-1.5px);box-shadow:0 6px 16px #0f766e40,0 2px 4px #0f766e1f}.btn-primary:active,.btn-accent:active{transform:translateY(0)scale(.98)}.btn-secondary{background:var(--surface);color:var(--text-primary);border:1px solid 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