:root{--bg-light:#f9fafb;--bg-dark:#0d0d0d;--text-light:#111827;--text-dark:#f3f4f6;--energy-blue:rgba(59,130,246,0.4);--energy-blue-strong:rgba(59,130,246,0.8);--solar-yellow:rgba(253,224,71,0.3);--pulse-accent:rgba(14,165,233,0.25);--brand-blue-400:#3b82f6;--brand-blue-500:#2563eb;--brand-blue-600:#1d4ed8;--brand-deep-800:#081e31;--brand-green-500:#059669;--brand-green-400:#14b8a6;--cta-yellow-500:#f7c843;--cta-orange-500:#f77f00;--cta-yellow-400:#ffd65a;--cta-orange-400:#ff8c1a}body{margin:0;padding:0;font-family:system-ui,sans-serif;background:var(--bg-light);color:var(--text-light);transition:background .4s ease,color .4s ease}.dark body{background:var(--bg-dark);color:var(--text-dark)}body.solar-theme{position:relative;overflow-x:hidden}body.solar-theme:before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(circle at 20% 30%,var(--energy-blue) 0,transparent 70%),radial-gradient(circle at 80% 70%,var(--solar-yellow) 0,transparent 80%),linear-gradient(180deg,rgba(255,255,255,.03) 0,transparent 100%);animation:solarPulse 10s ease-in-out infinite alternate;background-blend-mode:screen}@keyframes solarPulse{0%{opacity:.35;transform:scale(1);filter:brightness(1)}50%{opacity:.55;transform:scale(1.02);filter:brightness(1.15)}to{opacity:.35;transform:scale(1);filter:brightness(1)}}.dark body.solar-theme:before{background:radial-gradient(circle at 30% 40%,var(--energy-blue-strong) 0,transparent 70%),radial-gradient(circle at 70% 80%,var(--pulse-accent) 0,transparent 80%),linear-gradient(180deg,rgba(255,255,255,.03) 0,transparent 100%);animation:solarPulseDark 12s ease-in-out infinite alternate}@keyframes solarPulseDark{0%{opacity:.25;transform:scale(1);filter:brightness(1)}50%{opacity:.5;transform:scale(1.05);filter:brightness(1.2)}to{opacity:.25;transform:scale(1);filter:brightness(1)}}body.solar-theme:after{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 0),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 0);background-size:40px 40px;mix-blend-mode:overlay;opacity:.15}