:root{color-scheme:light;--bg:#f5f7fa;--surface:#ffffff;--surface-2:#f8fafc;--surface-3:#eef2f7;--text:#111827;--text-2:#4b5563;--text-3:#8a94a6;--border:#e5e7eb;--border-strong:#d1d5db;--primary:#111827;--primary-text:#ffffff;--accent:#2563eb;--accent-soft:#eff6ff;--success:#15803d;--danger:#dc2626;--danger-soft:#fef2f2;--key:#f1f3f6;--key-hover:#e7eaf0;--key-active:#dfe4eb;--operator:#e8edf5;--operator-hover:#dce4ef;--radius-xs:8px;--radius-sm:12px;--radius-md:16px;--radius-lg:22px;--radius-xl:28px;--shadow-sm:0 1px 2px rgba(15, 23, 42, 0.04),0 2px 8px rgba(15, 23, 42, 0.04);--shadow-md:0 8px 30px rgba(15, 23, 42, 0.08);--shadow-lg:0 20px 60px rgba(15, 23, 42, 0.16);--header-height:72px;--bottom-nav-height:74px;--content-max-width:1180px;--font:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}html[data-theme=dark]{color-scheme:dark;--bg:#0b0f14;--surface:#121820;--surface-2:#171e27;--surface-3:#202936;--text:#f3f4f6;--text-2:#aeb7c4;--text-3:#6f7a89;--border:#27313d;--border-strong:#34404d;--primary:#f3f4f6;--primary-text:#111827;--accent:#60a5fa;--accent-soft:#17243a;--success:#4ade80;--danger:#f87171;--danger-soft:#32191d;--key:#202833;--key-hover:#293440;--key-active:#313d4a;--operator:#273341;--operator-hover:#303e4e;--shadow-sm:0 1px 2px rgba(0, 0, 0, 0.2),0 2px 8px rgba(0, 0, 0, 0.15);--shadow-md:0 8px 30px rgba(0, 0, 0, 0.25);--shadow-lg:0 20px 60px rgba(0, 0, 0, 0.45)}@media (prefers-color-scheme:dark){html[data-theme=system]{color-scheme:dark;--bg:#0b0f14;--surface:#121820;--surface-2:#171e27;--surface-3:#202936;--text:#f3f4f6;--text-2:#aeb7c4;--text-3:#6f7a89;--border:#27313d;--border-strong:#34404d;--primary:#f3f4f6;--primary-text:#111827;--accent:#60a5fa;--accent-soft:#17243a;--success:#4ade80;--danger:#f87171;--danger-soft:#32191d;--key:#202833;--key-hover:#293440;--key-active:#313d4a;--operator:#273341;--operator-hover:#303e4e;--shadow-sm:0 1px 2px rgba(0, 0, 0, 0.2),0 2px 8px rgba(0, 0, 0, 0.15);--shadow-md:0 8px 30px rgba(0, 0, 0, 0.25);--shadow-lg:0 20px 60px rgba(0, 0, 0, 0.45)}}*,::after,::before{box-sizing:border-box}html{min-height:100%;font-size:16px;-webkit-text-size-adjust:100%;text-size-adjust:100%}body{margin:0;min-width:320px;min-height:100vh;min-height:100dvh;background:var(--bg);color:var(--text);font-family:var(--font);font-weight:400;line-height:1.45;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}button,input,select,textarea{font:inherit}button{border:0}button,select{-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 35%,transparent);outline-offset:2px}h1,h2,h3,p{margin:0}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-shell{width:100%;min-height:100vh;min-height:100dvh;background:var(--bg)}.app-header{position:sticky;top:0;z-index:50;height:var(--header-height);display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,env(safe-area-inset-right)) 0 max(20px,env(safe-area-inset-left));background:color-mix(in srgb,var(--surface) 94%,transparent);border-bottom:1px solid var(--border);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}.brand-area{min-width:0;display:flex;align-items:center;gap:11px}.brand-mark{width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;border-radius:11px;background:var(--primary);color:var(--primary-text);font-size:18px;font-weight:800;letter-spacing:-.04em;box-shadow:var(--shadow-sm)}.brand-text{min-width:0}.brand-name{font-size:15px;font-weight:800;line-height:1.05;letter-spacing:.055em;white-space:nowrap}.brand-product{margin-top:3px;color:var(--text-2);font-size:11px;font-weight:500;line-height:1}.header-actions{display:flex;align-items:center;gap:6px}.icon-button{width:40px;height:40px;display:grid;place-items:center;padding:0;border-radius:12px;background:0 0;color:var(--text-2);font-size:18px;cursor:pointer;transition:background .16s,color .16s,transform .12s}.icon-button:hover{background:var(--surface-3);color:var(--text)}.icon-button:active{transform:scale(.94)}.install-button{color:var(--accent)}.main-content{width:100%;max-width:var(--content-max-width);margin:0 auto;padding:28px max(24px,env(safe-area-inset-right)) calc(var(--bottom-nav-height) + 28px) max(24px,env(safe-area-inset-left))}.view{display:none;width:100%}.view.active-view{display:block}.view-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.view-heading h1{font-size:26px;font-weight:750;line-height:1.15;letter-spacing:-.035em}.view-heading p{margin-top:5px;color:var(--text-2);font-size:13px}.primary-button,.secondary-button,.small-control{cursor:pointer;transition:background .16s,color .16s,border-color .16s,transform .12s}.primary-button{min-height:46px;padding:0 20px;border-radius:12px;background:var(--primary);color:var(--primary-text);font-weight:700}.primary-button:hover{opacity:.9}.primary-button:active,.secondary-button:active,.small-control:active{transform:scale(.97)}.secondary-button{min-height:40px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 14px;border:1px solid var(--border);border-radius:11px;background:var(--surface);color:var(--text);font-size:13px;font-weight:650;box-shadow:var(--shadow-sm)}.secondary-button:hover{background:var(--surface-2)}.danger-button{color:var(--danger)}.small-control{min-width:48px;height:34px;padding:0 10px;border:1px solid var(--border);border-radius:9px;background:var(--surface-2);color:var(--text-2);font-size:11px;font-weight:750;letter-spacing:.04em}.small-control:hover{background:var(--surface-3);color:var(--text)}#calculatorView{max-width:650px;margin:0 auto}.calculator-card{width:100%;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-md)}.calculator-display{min-height:180px;display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-end;padding:22px 24px 18px;text-align:right;overflow:hidden}.expression-display{width:100%;min-height:25px;overflow:hidden;color:var(--text-3);font-size:16px;font-weight:500;line-height:1.5;white-space:nowrap;text-overflow:ellipsis}.secondary-display{width:100%;min-height:22px;margin-top:2px;color:var(--text-2);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.result-display{width:100%;margin-top:5px;color:var(--text);font-size:clamp(38px, 7vw, 54px);font-weight:700;letter-spacing:-.055em;line-height:1.05;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.memory-bar{min-height:42px;display:grid;grid-template-columns:repeat(5,1fr);gap:6px;padding:0 14px 12px}.memory-button{min-height:34px;border-radius:8px;background:0 0;color:var(--text-3);font-size:11px;font-weight:700;cursor:pointer;transition:background .15s,color .15s}.memory-button:hover{background:var(--surface-3);color:var(--text)}.memory-button:active{background:var(--key-active)}.basic-keypad{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;padding:14px}.key{min-width:0;min-height:68px;display:grid;place-items:center;padding:0;border-radius:15px;background:var(--key);color:var(--text);font-size:21px;font-weight:650;cursor:pointer;user-select:none;-webkit-user-select:none;transition:background .12s,transform 80ms}.key:hover{background:var(--key-hover)}.key:active{background:var(--key-active);transform:scale(.96)}.key-clear{color:var(--danger);background:var(--danger-soft)}.key-clear:hover{background:color-mix(in srgb,var(--danger-soft) 82%,var(--danger))}.key-function{color:var(--accent)}.key-operator{background:var(--operator);color:var(--text);font-size:24px;font-weight:700}.key-operator:hover{background:var(--operator-hover)}.key-zero{grid-column:span 2;justify-content:flex-start;padding-left:27px}.scientific-keypad{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:7px;padding:0 14px 10px}.scientific-keypad button{min-width:0;min-height:42px;padding:0 6px;border-radius:9px;background:var(--surface-3);color:var(--text-2);font-size:12px;font-weight:650;cursor:pointer;transition:background .12s,color .12s,transform 80ms}.scientific-keypad button:hover{background:var(--key-hover);color:var(--text)}.scientific-keypad button:active{transform:scale(.96)}.calculator-footer{min-height:50px;display:flex;align-items:center;justify-content:space-between;padding:4px 14px 12px}#toolsView{max-width:100%}.tool-search-wrap{margin-bottom:24px}.tool-search{width:100%;height:48px;padding:0 16px;border:1px solid var(--border);border-radius:13px;outline:0;background:var(--surface);color:var(--text);font-size:14px;box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s}.tool-search::placeholder{color:var(--text-3)}.tool-search:focus{border-color:color-mix(in srgb,var(--accent) 55%,var(--border));box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 10%,transparent)}.tool-category{margin-bottom:34px}.category-title{margin-bottom:12px}.category-title h2{font-size:17px;font-weight:720;letter-spacing:-.015em}.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.tool-card{min-width:0;min-height:145px;display:flex;flex-direction:column;align-items:flex-start;padding:18px;border:1px solid var(--border);border-radius:16px;background:var(--surface);color:var(--text);text-align:left;cursor:pointer;box-shadow:var(--shadow-sm);transition:transform .14s,border-color .14s,background .14s,box-shadow .14s}.tool-card:hover{border-color:var(--border-strong);background:var(--surface-2);box-shadow:var(--shadow-md);transform:translateY(-2px)}.tool-card:active{transform:translateY(0) scale(.985)}.tool-icon{width:38px;height:38px;display:grid;place-items:center;margin-bottom:15px;border-radius:11px;background:var(--surface-3);color:var(--text);font-size:17px;font-weight:750}.tool-name{display:block;font-size:14px;font-weight:720;line-height:1.25}.tool-description{display:block;margin-top:5px;color:var(--text-2);font-size:11px;line-height:1.4}#historyView{max-width:850px;margin:0 auto}.history-list{display:flex;flex-direction:column;gap:9px}.history-item{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;min-height:72px;padding:13px 15px;border:1px solid var(--border);border-radius:13px;background:var(--surface);cursor:pointer;box-shadow:var(--shadow-sm);transition:background .14s,border-color .14s}.history-item:hover{background:var(--surface-2);border-color:var(--border-strong)}.history-expression{color:var(--text-2);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-result{margin-top:3px;color:var(--text);font-size:17px;font-weight:700}.history-time{color:var(--text-3);font-size:11px;white-space:nowrap}.empty-state{min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:35px;border:1px dashed var(--border-strong);border-radius:18px;text-align:center}.empty-icon{width:52px;height:52px;display:grid;place-items:center;margin-bottom:14px;border-radius:15px;background:var(--surface-3);color:var(--text-2);font-size:24px}.empty-state h2{font-size:16px;font-weight:700}.empty-state p{max-width:340px;margin-top:6px;color:var(--text-2);font-size:13px}.bottom-navigation{position:fixed;left:0;right:0;bottom:0;z-index:60;min-height:var(--bottom-nav-height);display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:7px max(8px,env(safe-area-inset-right)) max(7px,env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left));border-top:1px solid var(--border);background:color-mix(in srgb,var(--surface) 96%,transparent);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 -5px 25px rgba(15,23,42,.05)}.nav-item{min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:5px 6px;border-radius:12px;background:0 0;color:var(--text-3);cursor:pointer;transition:background .15s,color .15s}.nav-item:hover{background:var(--surface-2);color:var(--text-2)}.nav-item.active{background:var(--surface-3);color:var(--text)}.nav-icon{height:21px;display:grid;place-items:center;font-size:17px;line-height:1}.nav-label{max-width:100%;font-size:10px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.modal-backdrop{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(15,23,42,.48);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:.16s modalBackdropIn}.modal-card{width:min(100%,560px);max-height:min(90dvh,760px);overflow-y:auto;border:1px solid var(--border);border-radius:22px;background:var(--surface);color:var(--text);box-shadow:var(--shadow-lg);animation:.18s modalCardIn}.modal-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:22px 22px 18px;border-bottom:1px solid var(--border)}.modal-header h2{font-size:19px;font-weight:750;letter-spacing:-.02em}.modal-header p{margin-top:4px;color:var(--text-2);font-size:12px}.modal-close{width:36px;height:36px;flex:0 0 36px;display:grid;place-items:center;border-radius:10px;background:var(--surface-3);color:var(--text-2);font-size:22px;line-height:1;cursor:pointer;transition:background .14s,color .14s}.modal-close:hover{background:var(--key-hover);color:var(--text)}.mode-options{display:flex;flex-direction:column;gap:9px;padding:16px}.mode-option{width:100%;display:flex;align-items:center;gap:13px;padding:14px;border:1px solid var(--border);border-radius:13px;background:var(--surface);color:var(--text);text-align:left;cursor:pointer;transition:background .14s,border-color .14s}.mode-option:hover{background:var(--surface-2)}.mode-option.selected{border-color:color-mix(in srgb,var(--accent) 55%,var(--border));background:var(--accent-soft)}.mode-option-icon{width:38px;height:38px;display:grid;place-items:center;flex:0 0 38px;border-radius:10px;background:var(--surface-3);font-size:17px;font-weight:750}.mode-option small,.mode-option strong{display:block}.mode-option strong{font-size:14px}.mode-option small{margin-top:3px;color:var(--text-2);font-size:11px}.tool-modal{width:min(100%,650px)}.tool-modal-content{padding:20px}.tool-form{display:flex;flex-direction:column;gap:15px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{color:var(--text-2);font-size:12px;font-weight:650}.form-input,.form-select{width:100%;height:46px;padding:0 13px;border:1px solid var(--border);border-radius:11px;outline:0;background:var(--surface-2);color:var(--text);font-size:14px;transition:border-color .15s,box-shadow .15s}.form-input:focus,.form-select:focus{border-color:color-mix(in srgb,var(--accent) 55%,var(--border));box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 10%,transparent)}.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.form-actions{display:flex;gap:9px;margin-top:4px}.form-actions>*{flex:1}.tool-result{margin-top:18px;padding:17px;border:1px solid var(--border);border-radius:14px;background:var(--surface-2)}.tool-result-main{color:var(--text);font-size:28px;font-weight:750;letter-spacing:-.04em}.tool-result-label{margin-bottom:4px;color:var(--text-2);font-size:11px;font-weight:650}.tool-result-breakdown{display:flex;flex-direction:column;gap:8px;margin-top:15px;padding-top:13px;border-top:1px solid var(--border)}.result-line{display:flex;justify-content:space-between;gap:15px;color:var(--text-2);font-size:12px}.result-line strong{color:var(--text)}.settings-list{display:flex;flex-direction:column}.setting-row{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:13px 22px;border-bottom:1px solid var(--border)}.setting-info{min-width:0}.setting-info span,.setting-info strong{display:block}.setting-info strong{font-size:13px;font-weight:700}.setting-info span{margin-top:3px;color:var(--text-2);font-size:11px}.setting-select{min-width:120px;height:38px;padding:0 10px;border:1px solid var(--border);border-radius:9px;outline:0;background:var(--surface-2);color:var(--text);font-size:12px}.switch{position:relative;width:42px;height:24px;flex:0 0 42px;cursor:pointer}.switch input{position:absolute;width:1px;height:1px;opacity:0}.switch-slider{position:absolute;inset:0;border-radius:999px;background:var(--border-strong);transition:background .18s}.switch-slider::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.18);transition:transform .18s}.switch input:checked+.switch-slider{background:var(--accent)}.switch input:checked+.switch-slider::after{transform:translateX(18px)}.settings-about{display:flex;flex-direction:column;align-items:center;padding:22px;text-align:center}.settings-about strong{font-size:13px}.settings-about span{margin-top:4px;color:var(--text-2);font-size:11px}.settings-about .version-label{margin-top:12px;color:var(--text-3)}.install-content{display:flex;flex-direction:column;align-items:center;padding:28px 24px 26px;text-align:center}.install-icon{width:72px;height:72px;display:grid;place-items:center;margin-bottom:17px;border-radius:20px;background:var(--primary);color:var(--primary-text);font-size:30px;font-weight:800;box-shadow:var(--shadow-md)}.install-content p{max-width:390px;margin-bottom:20px;color:var(--text-2);font-size:13px;line-height:1.55}.install-content .primary-button{min-width:170px}.toast{position:fixed;left:50%;bottom:calc(var(--bottom-nav-height) + 18px);z-index:150;max-width:min(90vw,420px);padding:11px 15px;border:1px solid var(--border);border-radius:11px;background:var(--surface);color:var(--text);font-size:12px;font-weight:600;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transform:translate(-50%,10px);transition:opacity .18s,transform .18s}.toast.show{opacity:1;transform:translate(-50%,0)}.app-loading{position:fixed;inset:0;z-index:200;display:grid;place-items:center;background:var(--bg);transition:opacity .25s,visibility .25s}.app-loading.hidden{opacity:0;visibility:hidden;pointer-events:none}.loading-mark{width:54px;height:54px;display:grid;place-items:center;border-radius:15px;background:var(--primary);color:var(--primary-text);font-size:22px;font-weight:800;animation:1.1s ease-in-out infinite loadingPulse}@keyframes modalBackdropIn{from{opacity:0}to{opacity:1}}@keyframes modalCardIn{from{opacity:0;transform:translateY(8px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes loadingPulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.94);opacity:.72}}@media (max-width:900px){.main-content{padding-top:24px}.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.key{min-height:64px}}@media (max-width:640px){:root{--header-height:64px;--bottom-nav-height:68px}.app-header{padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right))}.brand-mark{width:34px;height:34px;flex-basis:34px;border-radius:10px;font-size:16px}.brand-name{font-size:14px}.brand-product{font-size:10px}.header-actions{gap:2px}.icon-button{width:37px;height:37px}.main-content{padding:18px max(12px,env(safe-area-inset-right)) calc(var(--bottom-nav-height) + 18px) max(12px,env(safe-area-inset-left))}.view-heading{margin-bottom:15px}.view-heading h1{font-size:23px}.view-heading p{font-size:11px}.secondary-button{min-height:37px;padding:0 11px}#calculatorView{width:100%}.calculator-card{border-radius:19px}.calculator-display{min-height:155px;padding:18px 18px 14px}.expression-display{font-size:14px}.secondary-display{font-size:11px}.result-display{font-size:clamp(36px, 11vw, 48px)}.memory-bar{padding-left:10px;padding-right:10px;padding-bottom:8px}.basic-keypad{gap:7px;padding:10px}.key{min-height:62px;border-radius:13px;font-size:20px}.key-operator{font-size:23px}.key-zero{padding-left:23px}.scientific-keypad{gap:5px;padding:0 10px 8px}.scientific-keypad button{min-height:39px;border-radius:8px;font-size:10px}.calculator-footer{padding-left:10px;padding-right:10px}.tool-search-wrap{margin-bottom:19px}.tool-search{height:45px;border-radius:11px;font-size:13px}.tool-category{margin-bottom:26px}.category-title{margin-bottom:9px}.category-title h2{font-size:15px}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.tool-card{min-height:128px;padding:13px;border-radius:13px}.tool-icon{width:33px;height:33px;margin-bottom:11px;border-radius:9px;font-size:14px}.tool-name{font-size:12px}.tool-description{margin-top:4px;font-size:10px}.history-item{min-height:65px;padding:11px 12px}.history-result{font-size:15px}.history-expression{font-size:11px}.history-time{font-size:10px}.empty-state{min-height:240px}.modal-backdrop{align-items:flex-end;padding:0 max(0px,env(safe-area-inset-right)) max(0px,env(safe-area-inset-bottom)) max(0px,env(safe-area-inset-left))}.modal-card{width:100%;max-height:92vh;max-height:92dvh;border-radius:20px 20px 0 0;animation:.18s mobileModalIn}.modal-header{padding:18px 17px 15px}.modal-header h2{font-size:17px}.modal-header p{font-size:11px}.tool-modal-content{padding:16px}.mode-options{padding:12px}.setting-row{min-height:66px;padding:11px 17px}.setting-info strong{font-size:12px}.setting-info span{font-size:10px}.setting-select{min-width:105px;height:36px;font-size:11px}.form-row{grid-template-columns:1fr}.form-actions{flex-direction:column}.tool-result-main{font-size:25px}.toast{bottom:calc(var(--bottom-nav-height) + 12px)}}@keyframes mobileModalIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width:380px){.main-content{padding-left:9px;padding-right:9px}.calculator-display{min-height:145px;padding-left:14px;padding-right:14px}.basic-keypad{gap:5px;padding:8px}.key{min-height:58px;border-radius:11px}.tool-grid{gap:6px}.tool-card{min-height:120px;padding:11px}}@media (min-width:1200px){.main-content{padding-top:34px}#calculatorView{max-width:680px}.calculator-display{min-height:195px}.key{min-height:74px}.tool-card{min-height:155px}}@media (prefers-reduced-motion:reduce){*,::after,::before{scroll-behavior:auto!important;animation-duration:0s!important;animation-iteration-count:1!important;transition-duration:0s!important}}@media (pointer:coarse){.icon-button{min-width:42px;min-height:42px}.nav-item{min-height:48px}.key,.tool-card{touch-action:manipulation}}@media print{.app-header,.bottom-navigation,.calculator-footer,.memory-bar{display:none!important}.main-content{padding:0}.view{display:none!important}#calculatorView{display:block!important;max-width:none}.calculator-card{box-shadow:none;border:1px solid #000}}