@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap";:root{--bg-dark:#0a0d14;--bg-card:#121826b3;--bg-card-border:#ffffff14;--bg-glow:#6366f126;--accent-cyan:#06b6d4;--accent-cyan-glow:#06b6d466;--accent-violet:#8b5cf6;--accent-orange:#f97316;--accent-pink:#ec4899;--text-main:#f8fafc;--text-muted:#94a3b8;--text-dim:#64748b;--btn-num-bg:#1e293b99;--btn-num-hover:#334155cc;--btn-op-bg:#8b5cf626;--btn-op-hover:#8b5cf659;--btn-fn-bg:#06b6d426;--btn-fn-hover:#06b6d44d;--btn-equals-bg:linear-gradient(135deg, #06b6d4, #8b5cf6);--btn-equals-glow:0 0 20px #06b6d480;--font-sans:"Outfit", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"JetBrains Mono", monospace;--radius-sm:8px;--radius-md:16px;--radius-lg:24px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);font-family:var(--font-sans);background-image:radial-gradient(circle at 15% 15%,#06b6d41f 0%,#0000 45%),radial-gradient(circle at 85% 85%,#8b5cf61f 0%,#0000 45%),radial-gradient(circle,#ec48990d 0%,#0000 60%);background-attachment:fixed;min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:#0f172a99}::-webkit-scrollbar-thumb{background:#94a3b84d;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#94a3b880}.glass-panel{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--bg-card-border);border-radius:var(--radius-lg);box-shadow:0 8px 32px #0000005e}.header-badge{color:var(--accent-cyan);background:#06b6d41a;border:1px solid #06b6d440;border-radius:20px;align-items:center;gap:6px;padding:4px 12px;font-size:.8rem;font-weight:500;display:inline-flex}.header-badge.offline{color:var(--accent-orange);background:#f973161a;border-color:#f9731640}.status-dot{background-color:var(--accent-cyan);width:8px;height:8px;box-shadow:0 0 8px var(--accent-cyan);border-radius:50%;animation:2s infinite pulse-glow}.status-dot.orange{background-color:var(--accent-orange);box-shadow:0 0 8px var(--accent-orange)}@keyframes pulse-glow{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(.85)}}.tab-btn{color:var(--text-muted);border-radius:var(--radius-md);cursor:pointer;background:0 0;border:none;align-items:center;gap:8px;padding:10px 18px;font-size:.95rem;font-weight:500;transition:all .2s;display:flex}.tab-btn:hover{color:var(--text-main);background:#ffffff0d}.tab-btn.active{color:#fff;background:linear-gradient(135deg,#06b6d433,#8b5cf633);border:1px solid #06b6d44d;box-shadow:0 4px 12px #06b6d426}.calc-container{width:100%;max-width:440px;margin:0 auto}.calc-display{border-radius:var(--radius-md);text-align:right;word-break:break-all;background:#0a0e17cc;border:1px solid #ffffff0d;flex-direction:column;justify-content:flex-end;min-height:120px;margin-bottom:20px;padding:20px;display:flex}.calc-expr{color:var(--text-muted);font-size:1.1rem;font-family:var(--font-mono);opacity:.85;min-height:1.6rem;margin-bottom:6px}.calc-val{color:var(--text-main);font-size:2.5rem;font-weight:600;font-family:var(--font-mono);letter-spacing:-.5px;transition:font-size .15s}.calc-val.large{font-size:2.5rem}.calc-val.medium{font-size:2rem}.calc-val.small{font-size:1.4rem}.calc-grid{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}.calc-grid.scientific{grid-template-columns:repeat(5,1fr);gap:10px}.calc-btn{border-radius:var(--radius-md);height:60px;color:var(--text-main);cursor:pointer;-webkit-user-select:none;user-select:none;border:1px solid #ffffff0f;justify-content:center;align-items:center;font-size:1.25rem;font-weight:500;transition:all .15s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.calc-btn:active{transform:scale(.94)}.calc-btn.num{background:var(--btn-num-bg)}.calc-btn.num:hover{background:var(--btn-num-hover);border-color:#ffffff26}.calc-btn.op{background:var(--btn-op-bg);color:var(--accent-violet);font-weight:600}.calc-btn.op:hover{background:var(--btn-op-hover);box-shadow:0 0 12px #8b5cf64d}.calc-btn.fn{background:var(--btn-fn-bg);color:var(--accent-cyan);font-size:1rem}.calc-btn.fn:hover{background:var(--btn-fn-hover);box-shadow:0 0 12px #06b6d44d}.calc-btn.equals{background:var(--btn-equals-bg);color:#fff;box-shadow:var(--btn-equals-glow);font-weight:700}.calc-btn.equals:hover{filter:brightness(1.15);box-shadow:0 0 25px #06b6d4b3}.calc-btn.clear{color:#f87171;background:#ef444426}.calc-btn.clear:hover{background:#ef44444d}.calc-btn span.sub{opacity:.6;font-size:.7rem;position:absolute;bottom:4px;right:6px}.mode-toggle{background:#0f172acc;border:1px solid #ffffff14;border-radius:30px;margin-bottom:16px;padding:4px;display:flex}.mode-toggle-btn{color:var(--text-muted);cursor:pointer;text-align:center;background:0 0;border:none;border-radius:20px;flex:1;padding:6px 12px;font-size:.85rem;transition:all .2s}.mode-toggle-btn.active{color:var(--accent-cyan);background:#06b6d433;font-weight:600}.history-item{border-radius:var(--radius-md);background:#0f172a80;border:1px solid #ffffff0d;justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;transition:all .2s;display:flex}.history-item:hover{background:#1e293b99;border-color:#06b6d44d;transform:translateY(-1px)}.code-block{border-radius:var(--radius-md);font-family:var(--font-mono);color:#e6edf3;background:#0d1117;border:1px solid #ffffff1a;padding:16px;font-size:.88rem;position:relative;overflow-x:auto}.code-block .keyword{color:#ff7b72}.code-block .string{color:#a5d6ff}.code-block .function{color:#d2a8ff}.code-block .comment{color:#8b949e;font-style:italic}.code-block .command{color:#7ee787}.copy-btn{color:var(--text-muted);cursor:pointer;background:#ffffff1a;border:none;border-radius:6px;padding:4px 8px;font-size:.75rem;transition:all .2s;position:absolute;top:10px;right:10px}.copy-btn:hover{color:#fff;background:#fff3}