:root{--bg0: #2b3339;--bg1: #323d43;--bg2: #3a464c;--bg3: #445055;--bg4: #4d5960;--fg: #d3c6aa;--red: #e67e80;--orange: #e69875;--yellow: #dbbc7f;--green: #a7c080;--aqua: #83c092;--blue: #7fbbb3;--purple: #d699b6;--grey0: #7a8478;--grey1: #859289;--grey2: #9da9a0}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg0);color:var(--fg);min-height:100vh;padding:2rem 1rem;line-height:1.6}.container{max-width:860px;margin:0 auto}h1{font-size:1.75rem;font-weight:700;margin-bottom:.25rem;color:var(--green)}.subtitle{color:var(--grey2);margin-bottom:2rem;font-size:.95rem}.card{background:var(--bg1);border-radius:12px;padding:1.75rem;box-shadow:0 4px 6px #0000004d;margin-bottom:1.5rem}.card h2{font-size:.8rem;font-weight:600;color:var(--aqua);text-transform:uppercase;letter-spacing:.05em;margin-bottom:1.25rem}.date-row{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;margin-bottom:1.25rem}@media(max-width:500px){.date-row{grid-template-columns:1fr}}.field label{display:block;font-size:.8rem;font-weight:600;color:var(--grey2);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.4rem}.field input[type=date]{width:100%;padding:.6rem .8rem;border:2px solid var(--bg3);border-radius:8px;font-size:1rem;color:var(--fg);background:var(--bg2);transition:border-color .2s,background .2s;cursor:pointer;color-scheme:dark}.field input[type=date]:focus{outline:none;border-color:var(--green);background:var(--bg1)}.field input.flatpickr-input{width:100%;padding:.6rem .8rem;border:2px solid var(--bg3);border-radius:8px;font-size:1rem;color:var(--fg);background:var(--bg2);transition:border-color .2s,background .2s;cursor:pointer;font-family:inherit}.field input.flatpickr-input:focus{outline:none;border-color:var(--green);background:var(--bg1)}.flatpickr-calendar{background:var(--bg1)!important;border:1.5px solid var(--bg3)!important;box-shadow:0 8px 24px #0006!important;color:var(--fg)!important;border-radius:10px!important;font-family:inherit!important}.flatpickr-months .flatpickr-month,.flatpickr-current-month,.flatpickr-monthDropdown-months{background:var(--bg1)!important;color:var(--yellow)!important;fill:var(--yellow)!important}.flatpickr-monthDropdown-months{border:none!important;font-size:1rem!important}.flatpickr-current-month input.cur-year{color:var(--yellow)!important;font-size:1rem!important}.flatpickr-prev-month,.flatpickr-next-month{color:var(--grey2)!important;fill:var(--grey2)!important}.flatpickr-prev-month:hover,.flatpickr-next-month:hover{color:var(--green)!important;fill:var(--green)!important}.flatpickr-weekdays,.flatpickr-weekdaycontainer{background:var(--bg1)!important}span.flatpickr-weekday{background:var(--bg1)!important;color:var(--grey1)!important}.flatpickr-day{color:var(--fg)!important;border-radius:6px!important}.flatpickr-day:hover{background:var(--bg3)!important;border-color:var(--bg3)!important}.flatpickr-day.today{border-color:var(--aqua)!important;color:var(--aqua)!important}.flatpickr-day.selected,.flatpickr-day.selected:hover{background:var(--green)!important;border-color:var(--green)!important;color:var(--bg0)!important;font-weight:700!important}.flatpickr-day.flatpickr-disabled,.flatpickr-day.prevMonthDay,.flatpickr-day.nextMonthDay{color:var(--bg4)!important}.numInputWrapper:hover{background:transparent!important}.options{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:1.25rem}.option-btn{padding:.5rem 1.1rem;border:2px solid var(--bg3);border-radius:8px;background:var(--bg2);color:var(--fg);font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;white-space:nowrap}.option-btn:hover{border-color:var(--green);background:var(--bg3)}.option-btn.active{background:var(--green);border-color:var(--green);color:var(--bg0);font-weight:700}.checkbox-row{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem;font-size:.9rem;color:var(--grey2);cursor:pointer;user-select:none}.checkbox-row input[type=checkbox]{width:1rem;height:1rem;cursor:pointer;accent-color:var(--green)}.results{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:1rem;margin-top:1.25rem}.result-box{background:var(--bg2);border:2px solid var(--bg3);border-radius:10px;padding:1rem;text-align:center;transition:border-color .2s}.result-box.total{border-color:var(--blue)}.result-box.workdays{border-color:var(--green)}.result-box.weekends{border-color:var(--orange)}.result-box.holidays{border-color:var(--red)}.result-box .value{font-size:2rem;font-weight:700;line-height:1;margin-bottom:.25rem}.result-box.total .value{color:var(--blue)}.result-box.workdays .value{color:var(--green)}.result-box.weekends .value{color:var(--orange)}.result-box.holidays .value{color:var(--red)}.result-box .label{font-size:.75rem;color:var(--grey1);font-weight:500;text-transform:uppercase;letter-spacing:.04em}.duration-bar{background:var(--bg2);border:2px solid var(--bg3);border-radius:10px;padding:.75rem 1rem;margin-top:1rem}#results-section{display:none}#results-section.visible{display:block}.error{color:var(--red);font-size:.875rem;margin-top:.5rem;display:none}.error.visible{display:block}.calendar-grid-wrapper{overflow-x:auto}.calendar-months{display:flex;flex-wrap:wrap;gap:1.5rem;margin-top:.5rem}.cal-month{min-width:224px;flex:0 0 auto}.cal-month-title{font-weight:600;font-size:.95rem;margin-bottom:.6rem;color:var(--yellow);text-align:center}.cal-table{width:100%;border-collapse:collapse;font-size:.82rem}.cal-table th{text-align:center;padding:4px 2px;color:var(--grey1);font-weight:600;font-size:.75rem}.cal-table td{text-align:center;padding:3px 2px;width:32px;height:28px;border-radius:6px;position:relative}.cal-table td span{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;font-size:.82rem;color:var(--grey1)}td.in-range span{background:var(--bg3);color:var(--blue);font-weight:500}td.range-start span,td.range-end span{background:var(--blue);color:var(--bg0);font-weight:700}td.is-weekend span{color:var(--grey0)}td.in-range.is-weekend span{background:var(--bg3);color:var(--orange)}td.is-holiday span{background:#e67e802e;color:var(--red);font-weight:600}td.in-range.is-holiday span{background:#e67e8040;color:var(--red);font-weight:600}td.range-start.is-holiday span,td.range-end.is-holiday span{background:var(--red);color:var(--bg0)}td.is-weekend.is-holiday span{background:#4450558c;color:var(--grey1);font-weight:500}td.in-range.is-weekend.is-holiday span{background:#445055bf;color:var(--grey2);font-weight:500}td.range-start.is-weekend.is-holiday span,td.range-end.is-weekend.is-holiday span{background:var(--bg3);color:var(--grey2)}td.other-month span{color:var(--bg3)}.legend{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1.25rem;font-size:.8rem;color:var(--grey2)}.legend-item{display:flex;align-items:center;gap:.4rem}.legend-dot{width:14px;height:14px;border-radius:50%;flex-shrink:0}.holiday-list{margin-top:1rem;font-size:.875rem}.holiday-item{display:flex;justify-content:space-between;padding:.5rem .75rem;border-radius:6px;margin-bottom:.25rem;background:var(--bg2);gap:1rem}.holiday-date{color:var(--yellow);font-weight:500;white-space:nowrap}.holiday-name{color:var(--fg);text-align:right}