*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#f8f9fa;--color-surface:#fff;--color-surface-hover:#f0f1f3;--color-border:#e0e2e6;--color-border-focus:#3b82f6;--color-text:#1a1b1e;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-primary:#3b82f6;--color-primary-hover:#2563eb;--color-primary-subtle:#eff6ff;--color-success:#10b981;--color-error:#ef4444;--color-error-bg:#fef2f2;--color-error-border:#fecaca;--color-hero:#1e293b;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 12px #00000014;--shadow-lg:0 8px 24px #0000001f;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-mono:"SF Mono", "JetBrains Mono", "Cascadia Code", monospace;--transition:.2s ease}[data-theme=dark]{--color-bg:#0f1117;--color-surface:#1a1b23;--color-surface-hover:#252630;--color-border:#2e303a;--color-border-focus:#60a5fa;--color-text:#e8eaed;--color-text-secondary:#9ca3af;--color-text-muted:#6b7280;--color-primary:#60a5fa;--color-primary-hover:#3b82f6;--color-primary-subtle:#1e293b;--color-hero:#e8eaed;--color-error-bg:#2d1313;--color-error-border:#7f1d1d;--shadow-sm:0 1px 2px #0003;--shadow-md:0 4px 12px #0000004d;--shadow-lg:0 8px 24px #0006}html{-webkit-text-size-adjust:100%;font-size:16px}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;min-height:100dvh;line-height:1.5}#app{flex-direction:column;min-height:100dvh;display:flex}.app-container{flex-direction:column;flex:1;width:100%;max-width:480px;margin:0 auto;padding:16px;display:flex}.app-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px;padding:16px 0;display:flex}.app-title{letter-spacing:-.02em;color:var(--color-text);font-size:1.5rem;font-weight:700}.app-subtitle{color:var(--color-text-secondary);flex:1;margin-left:8px;font-size:.875rem}.theme-toggle{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);padding:6px 10px;font-size:1.125rem;line-height:1}.theme-toggle:hover{background:var(--color-surface-hover)}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition);padding:20px}.card:focus-within{box-shadow:var(--shadow-md)}.calculator-card{flex-direction:column;gap:16px;display:flex}.field-group{flex-direction:column;gap:4px;display:flex}.field-label{color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.03em;font-size:.8125rem;font-weight:600}.input-wrapper{align-items:center;display:flex;position:relative}.input-prefix{color:var(--color-text-muted);pointer-events:none;font-size:1.25rem;font-weight:500;position:absolute;left:14px}.input-suffix{color:var(--color-text-muted);pointer-events:none;font-size:.875rem;position:absolute;right:14px}.price-input,.num-input{width:100%;font-size:1.25rem;font-weight:500;font-family:var(--font-mono);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);transition:border-color var(--transition), box-shadow var(--transition);-moz-appearance:textfield;outline:none;padding:12px 14px}.price-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.price-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.num-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.num-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.price-input:focus,.num-input:focus{border-color:var(--color-border-focus);box-shadow:0 0 0 3px #3b82f626}.price-input::placeholder,.num-input::placeholder{color:var(--color-text-muted);font-weight:400}.input-wrapper .price-input,.input-wrapper .num-input{padding-left:32px}.num-input{font-size:1rem;font-weight:400;font-family:var(--font-mono);padding:10px 14px}.toggle-group{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);gap:4px;padding:3px;display:flex;overflow:hidden}.toggle-group.small .toggle-btn{padding:6px 10px;font-size:.8125rem}.toggle-btn{border-radius:var(--radius-sm);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition);text-align:center;white-space:nowrap;background:0 0;border:none;flex:1;padding:8px 12px;font-size:.875rem;font-weight:500}.toggle-btn:hover{color:var(--color-text);background:var(--color-surface-hover)}.toggle-btn.active{background:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-sm);font-weight:600}.divider{background:var(--color-border);height:1px;margin:4px 0}.advanced-toggle{width:100%;color:var(--color-text-secondary);cursor:pointer;transition:color var(--transition);background:0 0;border:none;justify-content:space-between;align-items:center;padding:10px 0;font-size:.875rem;font-weight:500;display:flex}.advanced-toggle:hover{color:var(--color-text)}.chevron{transition:transform var(--transition);font-size:.75rem}.chevron.open{transform:rotate(90deg)}.advanced-panel{flex-direction:column;gap:14px;padding-top:4px;display:flex}.result-card{text-align:center;border:2px solid var(--color-primary);background:linear-gradient(135deg, var(--color-primary-subtle) 0%, var(--color-surface) 100%);opacity:0;margin-top:16px;transition:opacity .35s,transform .35s;transform:translateY(8px)}.result-card.result-enter{opacity:1;transform:translateY(0)}.result-hero{letter-spacing:-.03em;color:var(--color-hero);font-size:2.5rem;font-weight:800;line-height:1.1;font-family:var(--font-mono)}[data-theme=dark] .result-hero{color:#f0f4ff}.result-hero-label{color:var(--color-text-secondary);margin-top:2px;font-size:1rem;font-weight:500}.result-days{color:var(--color-text);margin-top:12px;font-size:1rem;font-weight:500}.result-rate{color:var(--color-text-muted);margin-top:4px;font-size:.8125rem}.result-meta{border-top:1px solid var(--color-border);margin-top:14px;padding-top:14px}.result-meta-row{color:var(--color-text-secondary);font-size:.875rem;line-height:1.6}.share-btn{border-radius:var(--radius-md);background:var(--color-primary);color:#fff;cursor:pointer;transition:background var(--transition), transform var(--transition);border:none;width:100%;margin-top:16px;padding:10px 24px;font-size:.875rem;font-weight:600}.share-btn:hover{background:var(--color-primary-hover);transform:translateY(-1px)}.share-btn:active{transform:translateY(0)}.error-banner{color:var(--color-error);background:var(--color-error-bg);border:1px solid var(--color-error-border);border-radius:var(--radius-md);margin-top:12px;padding:12px 16px;font-size:.875rem;display:none}.app-footer{text-align:center;color:var(--color-text-muted);margin-top:auto;padding:24px 0 16px;font-size:.75rem}.sub-freq-row{margin-top:-8px}@media (width<=400px){.app-container{padding:12px}.card{padding:16px}.result-hero{font-size:2rem}.price-input{padding:10px 14px;font-size:1.125rem}.app-title{font-size:1.25rem}.toggle-btn{padding:7px 8px;font-size:.8125rem}}@media (width>=768px){.app-container{padding:32px 16px}.result-hero{font-size:3rem}.share-btn{width:auto}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}:focus-visible{outline:2px solid var(--color-border-focus);outline-offset:2px}.sr-only{clip:rect(0, 0, 0, 0);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.tour-overlay{z-index:1000;-webkit-backdrop-filter:blur(4px);opacity:0;background:#00000080;justify-content:center;align-items:center;padding:16px;transition:opacity .3s;display:flex;position:fixed;inset:0}.tour-overlay.tour-visible{opacity:1}.tour-modal{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);width:100%;max-width:440px;box-shadow:var(--shadow-lg);max-height:90dvh;padding:32px 28px 24px;transition:transform .35s cubic-bezier(.16,1,.3,1);overflow-y:auto;transform:translateY(12px)scale(.97)}.tour-visible .tour-modal{transform:translateY(0)scale(1)}.tour-step-indicator{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;font-size:.75rem;font-weight:600}.tour-step-title{color:var(--color-text);margin-bottom:12px;font-size:1.375rem;font-weight:700;line-height:1.3}.tour-step-description{color:var(--color-text-secondary);margin-bottom:24px;font-size:.9375rem;line-height:1.6}.tour-progress{justify-content:center;gap:6px;margin-bottom:24px;display:flex}.tour-dot{background:var(--color-border);border-radius:50%;width:8px;height:8px;transition:all .3s}.tour-dot.active{background:var(--color-primary);border-radius:4px;width:24px}.tour-dot.done{background:var(--color-primary);opacity:.4}.tour-actions{justify-content:flex-end;gap:10px;display:flex}.tour-btn{border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);border:none;padding:10px 20px;font-size:.875rem;font-weight:600}.tour-btn-skip{color:var(--color-text-muted);background:0 0}.tour-btn-skip:hover{color:var(--color-text);background:var(--color-surface-hover)}.tour-btn-next{background:var(--color-primary);color:#fff;min-width:100px}.tour-btn-next:hover{background:var(--color-primary-hover);transform:translateY(-1px)}.tour-btn-next:active{transform:translateY(0)}@media (width<=400px){.tour-modal{padding:24px 20px 20px}.tour-step-title{font-size:1.125rem}}@media (prefers-reduced-motion:reduce){.tour-overlay,.tour-modal,.tour-btn-next{transition-duration:.01ms!important}}
