:root{--bg-primary:#090d16;--bg-gradient:radial-gradient(circle at 50% 0%, #1a233a 0%, #0d121f 50%, #060911 100%);--card-bg:#151c2cb3;--card-border:#ffffff14;--card-shadow:0 20px 50px #00000080, inset 0 1px 0 #ffffff1a;--text-primary:#f3f4f6;--text-secondary:#9ca3af;--text-muted:#6b7280;--btn-num-bg:#1e293b99;--btn-num-hover:#334155cc;--btn-num-text:#f8fafc;--btn-op-bg:#6366f126;--btn-op-hover:#6366f14d;--btn-op-text:#818cf8;--btn-fn-bg:#33415566;--btn-fn-hover:#47556999;--btn-fn-text:#cbd5e1;--btn-accent-bg:linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--btn-accent-hover:linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--btn-accent-shadow:0 4px 20px #6366f166;--btn-accent-text:#fff;--btn-clear-bg:#ef444426;--btn-clear-hover:#ef44444d;--btn-clear-text:#f87171;--accent-glow:#6366f1;--panel-bg:#0f172ad9;--history-item-hover:#ffffff0d;--font-sans:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"JetBrains Mono", monospace}[data-theme=light]{--bg-primary:#f0f4f8;--bg-gradient:radial-gradient(circle at 50% 0%, #fff 0%, #e2e8f0 70%, #cbd5e1 100%);--card-bg:#fffc;--card-border:#00000014;--card-shadow:0 20px 40px #00000014, inset 0 1px 0 #ffffffe6;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--btn-num-bg:#ffffffe6;--btn-num-hover:#f1f5f9;--btn-num-text:#0f172a;--btn-op-bg:#6366f11a;--btn-op-hover:#6366f133;--btn-op-text:#4f46e5;--btn-fn-bg:#e2e8f0cc;--btn-fn-hover:#cbd5e1e6;--btn-fn-text:#334155;--btn-accent-bg:linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--btn-accent-hover:linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);--btn-accent-shadow:0 4px 15px #4f46e54d;--btn-accent-text:#fff;--btn-clear-bg:#ef44441a;--btn-clear-hover:#ef444433;--btn-clear-text:#dc2626;--accent-glow:#4f46e5;--panel-bg:#fffffff2;--history-item-hover:#0000000a}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;-webkit-font-smoothing:antialiased;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--bg-primary);background-image:var(--bg-gradient);min-height:100vh;color:var(--text-primary);justify-content:center;align-items:center;padding:1rem;transition:background .3s,color .3s;display:flex;overflow-x:hidden}#root{justify-content:center;align-items:center;width:100%;max-width:1100px;display:flex}.app-container{justify-content:center;align-items:stretch;gap:1.5rem;width:100%;display:flex;position:relative}.calc-card{background:var(--card-bg);-webkit-backdrop-filter:blur(20px);border:1px solid var(--card-border);width:100%;max-width:440px;box-shadow:var(--card-shadow);border-radius:28px;flex-direction:column;gap:1.25rem;padding:1.5rem;transition:max-width .3s,transform .2s,width .3s;display:flex;position:relative;overflow:hidden}.calc-card.scientific{max-width:580px}.app-header{justify-content:space-between;align-items:center;padding-bottom:.25rem;display:flex}.brand{letter-spacing:-.02em;background:linear-gradient(135deg,#a5b4fc,#818cf8);-webkit-text-fill-color:transparent;-webkit-background-clip:text;align-items:center;gap:.5rem;font-size:1.15rem;font-weight:800;display:flex}.brand-icon{color:#818cf8;width:22px;height:22px}.mode-selector{border:1px solid var(--card-border);background:#00000026;border-radius:12px;gap:2px;padding:3px;display:flex}.mode-btn{color:var(--text-secondary);font-family:var(--font-sans);cursor:pointer;background:0 0;border:none;border-radius:9px;align-items:center;gap:4px;padding:6px 10px;font-size:.78rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex}.mode-btn.active{background:var(--card-bg);color:var(--text-primary);box-shadow:0 2px 8px #00000026}.header-actions{align-items:center;gap:6px;display:flex}.icon-btn{border:1px solid var(--card-border);color:var(--text-secondary);cursor:pointer;background:#ffffff0d;border-radius:10px;justify-content:center;align-items:center;width:34px;height:34px;transition:all .2s;display:flex}.icon-btn:hover{color:var(--text-primary);background:#ffffff1f;transform:translateY(-1px)}.icon-btn.active{color:#818cf8;border-color:#818cf866}.display-screen{border:1px solid var(--card-border);background:#0003;border-radius:20px;flex-direction:column;justify-content:space-between;align-items:flex-end;min-height:120px;padding:1.2rem 1.25rem 1rem;display:flex;position:relative;overflow:hidden}.display-meta{width:100%;color:var(--text-muted);font-size:.75rem;font-family:var(--font-mono);justify-content:space-between;align-items:center;min-height:20px;display:flex}.badges{gap:6px;display:flex}.badge{color:#818cf8;background:#6366f133;border-radius:6px;padding:2px 6px;font-size:.68rem;font-weight:700}.expression-line{color:var(--text-secondary);font-family:var(--font-mono);word-break:break-all;text-align:right;white-space:nowrap;scrollbar-width:none;max-width:100%;font-size:.95rem;overflow-x:auto}.expression-line::-webkit-scrollbar{display:none}.main-line{font-family:var(--font-mono);color:var(--text-primary);word-break:break-all;text-align:right;letter-spacing:-.03em;width:100%;margin-top:6px;font-size:2.3rem;font-weight:700;line-height:1.1;transition:font-size .15s}.copy-toast{color:#fff;background:#10b981;border-radius:12px;padding:3px 10px;font-size:.72rem;font-weight:700;animation:.25s fadeInDown;position:absolute;top:8px;left:50%;transform:translate(-50%);box-shadow:0 4px 12px #10b98166}@keyframes fadeInDown{0%{opacity:0;transform:translate(-50%,-10px)}to{opacity:1;transform:translate(-50%)}}.keypad{grid-template-columns:repeat(4,1fr);gap:10px;display:grid}.keypad.scientific-grid{grid-template-columns:repeat(5,1fr)}.calc-btn{font-family:var(--font-sans);border:1px solid var(--card-border);background:var(--btn-num-bg);height:56px;color:var(--btn-num-text);cursor:pointer;border-radius:16px;outline:none;justify-content:center;align-items:center;font-size:1.15rem;font-weight:600;transition:all .15s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.calc-btn:hover{background:var(--btn-num-hover);transform:translateY(-2px)}.calc-btn:active,.calc-btn.pressed{transform:translateY(1px)scale(.97)}.calc-btn.op{background:var(--btn-op-bg);color:var(--btn-op-text);font-size:1.25rem;font-weight:700}.calc-btn.op:hover{background:var(--btn-op-hover)}.calc-btn.fn{background:var(--btn-fn-bg);color:var(--btn-fn-text);font-size:.95rem;font-weight:600}.calc-btn.fn:hover{background:var(--btn-fn-hover)}.calc-btn.clear{background:var(--btn-clear-bg);color:var(--btn-clear-text)}.calc-btn.clear:hover{background:var(--btn-clear-hover)}.calc-btn.equals{background:var(--btn-accent-bg);color:var(--btn-accent-text);box-shadow:var(--btn-accent-shadow);font-size:1.3rem;font-weight:700}.calc-btn.equals:hover{background:var(--btn-accent-hover)}.calc-btn.span-2{grid-column:span 2}.history-panel{background:var(--card-bg);-webkit-backdrop-filter:blur(20px);border:1px solid var(--card-border);width:300px;box-shadow:var(--card-shadow);border-radius:28px;flex-direction:column;gap:1rem;padding:1.25rem;animation:.3s slideInRight;display:flex}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.history-header{border-bottom:1px solid var(--card-border);justify-content:space-between;align-items:center;padding-bottom:.5rem;font-size:.95rem;font-weight:700;display:flex}.history-list{flex-direction:column;gap:8px;max-height:420px;padding-right:4px;display:flex;overflow-y:auto}.history-list::-webkit-scrollbar{width:5px}.history-list::-webkit-scrollbar-thumb{background:#fff3;border-radius:10px}.history-item{cursor:pointer;background:#0000001a;border:1px solid #0000;border-radius:12px;flex-direction:column;align-items:flex-end;gap:4px;padding:10px;transition:all .2s;display:flex}.history-item:hover{background:var(--history-item-hover);border-color:var(--card-border)}.history-expr{font-family:var(--font-mono);color:var(--text-secondary);font-size:.8rem}.history-res{font-family:var(--font-mono);color:var(--text-primary);font-size:1.1rem;font-weight:700}.empty-history{text-align:center;color:var(--text-muted);padding:2rem 0;font-size:.85rem}.converter-container{flex-direction:column;gap:1rem;padding-top:.5rem;display:flex}.converter-tabs{gap:6px;padding-bottom:4px;display:flex;overflow-x:auto}.converter-tab{border:1px solid var(--card-border);color:var(--text-secondary);cursor:pointer;white-space:nowrap;background:#00000026;border-radius:10px;padding:6px 12px;font-size:.8rem;font-weight:600;transition:all .2s}.converter-tab.active{color:#fff;background:#6366f1;border-color:#6366f1}.converter-row{flex-direction:column;gap:6px;display:flex}.converter-row label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:600}.converter-input-group{gap:8px;display:flex}.converter-input{border:1px solid var(--card-border);color:var(--text-primary);font-family:var(--font-mono);background:#0003;border-radius:12px;outline:none;flex:1;padding:10px 14px;font-size:1.1rem;font-weight:600}.converter-select{background:var(--card-bg);border:1px solid var(--card-border);width:140px;color:var(--text-primary);font-family:var(--font-sans);cursor:pointer;border-radius:12px;outline:none;padding:10px;font-size:.85rem}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100;background:#0009;justify-content:center;align-items:center;padding:1rem;animation:.2s fadeIn;display:flex;position:fixed;inset:0}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--panel-bg);border:1px solid var(--card-border);border-radius:24px;flex-direction:column;gap:1rem;width:100%;max-width:480px;padding:1.5rem;display:flex;box-shadow:0 25px 50px #0006}.shortcut-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.shortcut-item{background:#00000026;border-radius:10px;justify-content:space-between;align-items:center;padding:8px 12px;font-size:.82rem;display:flex}.kbd{border:1px solid var(--card-border);font-family:var(--font-mono);background:#ffffff1a;border-radius:6px;padding:2px 6px;font-size:.75rem}@media (width<=768px){.app-container{flex-direction:column;align-items:center}.history-panel{width:100%;max-width:440px}.calc-card.scientific{max-width:440px}.keypad.scientific-grid{grid-template-columns:repeat(4,1fr)}.main-line{font-size:1.9rem}}