@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/fonts/inter-latin.woff2?v=d890c0aade8adf79') format('woff2');
}

:root{color-scheme:light;--bg:#f4f6fa;--ink:#19253a;--muted:#5c697c;--line:#dce2ec;--blue:#285dc0;font-family:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.5}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid #7099e8;outline-offset:3px}[hidden]{display:none!important}.skip{position:absolute;top:-80px;left:20px;background:var(--ink);color:white;padding:12px;z-index:3}.skip:focus{top:10px}.topbar{max-width:1440px;margin:auto;padding:22px 48px;display:flex;justify-content:space-between;align-items:center;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:14px;font-size:18px;font-weight:700;line-height:1.2}.logo{display:grid;place-items:center;background:var(--ink);color:white;width:46px;height:46px;letter-spacing:-2px;font-size:27px}.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:1.4px;margin-top:7px;font-weight:500}.home-link{font-size:12px;white-space:nowrap;padding:10px 0}.layout{max-width:1440px;margin:auto;display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;padding:42px 48px}.tool-nav{align-self:start;position:sticky;top:24px}.nav-label,.eyebrow{font-size:9px;font-weight:700;letter-spacing:1.5px;color:var(--muted);margin:0 0 20px}.tool-nav>a{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;font-weight:500;line-height:1.5;padding:12px 14px;margin-bottom:3px;border-left:3px solid transparent}.tool-nav>a:hover{background:#e9edf5}.tool-nav>a[aria-current="page"]{color:var(--blue);background:#e6edfb;border-left-color:var(--blue);font-weight:700}.tool-nav>a span{font-size:10px;opacity:.65;font-variant-numeric:tabular-nums}.nav-note{border-top:1px solid var(--line);padding:22px 14px;margin-top:24px;font-size:12px;color:var(--muted)}main{min-width:0;max-width:920px}.page-heading{margin-bottom:32px}.eyebrow{color:var(--blue);margin-bottom:10px}h1{font-size:clamp(28px,3vw,40px);letter-spacing:-1.4px;line-height:1.15;margin:0 0 12px}.page-heading>p:last-child{font-size:14px;color:var(--muted);margin:0}.tool{background:#fff;border:1px solid var(--line);padding:36px;min-width:0}.tool-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:30px}.tool-kind{font-size:9px;letter-spacing:1.3px;font-weight:700;color:var(--blue)}h2{font-size:26px;line-height:1.2;letter-spacing:-.7px;margin:10px 0}.tool-heading p{font-size:15px;line-height:1.6;color:var(--muted);margin:0}.tool-badge{font-size:10px;color:#78859a;white-space:nowrap;line-height:1.5;padding-top:3px;font-variant-numeric:tabular-nums}.fields{display:grid;grid-template-columns:minmax(0,1fr);gap:20px;margin-bottom:22px}.fields.two{grid-template-columns:repeat(2,minmax(0,1fr))}.fields.three{grid-template-columns:repeat(3,minmax(0,1fr))}label{display:flex;flex-direction:column;gap:9px;font-size:12px;font-weight:600;min-width:0}input,select,textarea{width:100%;min-width:0;min-height:46px;padding:11px 12px;border:1px solid #cbd4e1;border-radius:3px;background:#fff;color:var(--ink);font-size:14px;line-height:1.5}textarea{resize:vertical}input[type="date"],input[type="datetime-local"]{appearance:none}input:focus,select:focus,textarea:focus{border-color:var(--blue)}button{display:inline-flex;align-items:center;justify-content:center;gap:24px;min-height:44px;padding:12px 18px;background:var(--blue);color:#fff;border:1px solid var(--blue);border-radius:3px;font-size:12px;font-weight:600;line-height:1.5;cursor:pointer}button:hover{filter:brightness(.92)}button:disabled{opacity:.45;cursor:default}.text-button{background:transparent;color:var(--blue);border-color:transparent;padding-left:0;padding-right:0}.form-options{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:space-between;margin:-6px 0 22px}.check{display:flex;flex-direction:row;align-items:center;gap:9px;font-size:12px;line-height:1.5;font-weight:400}.check input{width:16px;min-width:16px;height:16px;min-height:16px;margin:0;accent-color:var(--blue)}.exclusions{margin:22px 0}.helper{font-size:11px;line-height:1.7;color:var(--muted);font-weight:400}.tool>.helper{margin:24px 0 0}.result:empty{display:none}.result{margin-top:28px;background:#eef3fc;border-left:3px solid var(--blue);padding:24px}.result.error,.error{background:#fff0ed;color:#942e20;border-color:#b74330}.result .result-label{display:block;font-size:11px;line-height:1.6;color:var(--muted);margin-bottom:8px}.result .result-value{display:block;font-size:clamp(24px,3vw,40px);font-weight:700;line-height:1.2;letter-spacing:-1px;overflow-wrap:anywhere}.result p{font-size:15px;line-height:1.7;margin:12px 0 0}.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;border-top:1px solid #d3dff2;margin-top:20px;padding-top:18px}.stats strong{display:block;font-size:20px;line-height:1.4}.stats span{font-size:11px;color:var(--muted)}.bottom-note{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:26px 0;font-size:11px;color:var(--muted)}.bottom-note strong{color:var(--ink);font-size:12px}footer{border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:10px;color:var(--muted)}
@media(min-width:1600px){.layout{gap:80px}}
@media(max-width:1100px){.layout{grid-template-columns:210px minmax(0,1fr);gap:28px;padding:32px}.topbar{padding:20px 32px}.tool{padding:28px}}
@media(max-width:760px){.topbar{padding:18px 20px}.brand{font-size:16px}.brand small{font-size:8px}.home-link{font-size:10px}.layout{display:block;padding:0 20px 20px}.tool-nav{position:static;display:flex;overflow-x:auto;gap:8px;margin:0 -20px 28px;padding:16px 20px;scrollbar-width:thin}.nav-label,.nav-note{display:none}.tool-nav>a{flex:none;font-size:13px;border:1px solid var(--line);padding:9px 12px;margin:0;background:white;border-radius:3px}.tool-nav>a span{display:none}.tool-nav>a[aria-current="page"]{border-color:#aac0e8}.page-heading{margin-bottom:24px}h1{font-size:30px}.page-heading>p:last-child{font-size:13px}.tool{padding:24px 20px}.tool-heading{gap:14px;margin-bottom:24px}h2{font-size:24px}.tool-badge{font-size:9px}.fields{gap:16px}.result{padding:20px}.bottom-note{display:block}.bottom-note span{display:block;margin-top:8px}}
@media(max-width:480px){.fields.two{grid-template-columns:minmax(0,1fr)}.fields.three{gap:10px}.fields.three input,.fields.three select{padding:10px 8px;font-size:13px}.tool-badge{display:none}.form-options{align-items:flex-start;gap:4px}.stats{gap:10px}.stats strong{font-size:18px}.brand{gap:10px}.logo{width:40px;height:40px}.home-link{max-width:70px;white-space:normal;text-align:right}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}


.timestamp-values{display:grid;gap:18px;margin-top:20px}
.timestamp-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px 14px}
.timestamp-label{grid-column:1/-1;font-size:12px;font-weight:600;line-height:1.5}
.timestamp-row input{background:#fff;font-size:13px;font-variant-numeric:tabular-nums}
.timestamp-row button{min-width:55px}

/* Compact controls across every toolkit. */
.tool .tool-heading{align-items:center;margin-bottom:20px}
.tool .tool-heading p{font-size:13px}
#difference .tool-heading{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,40%)}
#difference .tool-heading>div{min-width:0}
#difference-summary{width:100%;text-align:right;font-size:clamp(20px,3vw,30px);font-weight:700;font-variant-numeric:tabular-nums;line-height:1.2;color:var(--blue);letter-spacing:-.5px;overflow-wrap:anywhere}
.date-control{min-width:0}
.date-label{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.difference-actions{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 18px}

#difference .difference-dates{margin-bottom:14px}
@media(max-width:760px){
  .topbar{padding-top:12px;padding-bottom:12px}
  .tool-nav{margin-bottom:16px;padding-top:12px;padding-bottom:12px}
  .page-heading{margin-bottom:16px}
  .page-heading .eyebrow,.page-heading>p:last-child{display:none}
  .page-heading h1{font-size:24px;margin-bottom:0}
  .tool .tool-kind{display:none}
  .tool h2{margin:0 0 6px;font-size:22px}
  .tool .tool-heading{margin-bottom:14px}
  #difference-summary{font-size:22px}
  .tool .fields{gap:10px;margin-bottom:14px}
  .tool input[type=date],.tool input[type=datetime-local]{font-size:16px}
  .tool .result{margin-top:18px}
}
@media(max-width:480px){
  .tool{padding:18px 16px}
  .difference-actions{align-items:center}

  .tool .tool-heading p{font-size:11px}
}

.tool .fields{margin-bottom:14px}
.tool-options{margin-top:16px;border-top:1px solid var(--line);padding-top:12px}
.tool-options summary{font-size:12px;line-height:1.6;color:var(--blue);cursor:pointer;padding:5px 0}
.options-content{margin-top:14px}
.options-content .fields:last-child{margin-bottom:0}
.timestamp-values{gap:12px;margin-top:14px}
@media(max-width:760px){
  .tool .tool-heading{gap:12px}
  .tool .tool-heading p{font-size:12px}
  .tool .result{padding:16px}
  .tool>.helper{margin-top:16px}
  .tool label{gap:6px}
  .tool .date-label{min-height:32px}
}

.date-shortcuts{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.date-step{min-height:32px;padding:4px 3px;border-color:transparent;background:transparent;color:var(--blue);font-size:11px;font-weight:700;line-height:1.5;white-space:nowrap}
.date-step:hover{text-decoration:underline;background:transparent}

#difference-result .result-value,#difference-result .stats strong{font-variant-numeric:tabular-nums}

/* Keep singular/plural counters identical in size on narrow screens. */
@media(max-width:760px){
  #difference-summary{min-height:1.2em}
  #difference-summary .day-number,#difference-result .result-value .day-number{display:inline-block;min-width:1ch;font-variant-numeric:tabular-nums}
  #difference-summary .day-unit,#difference-result .result-value .day-unit{display:inline-block;width:2.6em;text-align:left;white-space:nowrap}
}

/* Prioritize inputs and answers; explanations stay available on demand. */
.layout{padding-top:24px}
.page-heading{margin-bottom:20px}
.page-heading .eyebrow{display:none}
.page-heading h1{font-size:30px;margin-bottom:6px}
.tool{padding:24px}
.tool .tool-heading{margin-bottom:12px}
.tool h2{margin-top:4px;margin-bottom:6px}
.tool .fields{gap:12px;margin-bottom:10px}
.tool label{gap:5px}
.tool input,.tool select{min-height:42px;padding-top:9px;padding-bottom:9px}
.tool .result{margin-top:12px;padding:14px 16px}
.result .result-label{margin-bottom:5px}
.result .result-value{font-size:clamp(23px,2.7vw,32px)}
.result-details{margin-top:10px}
.result-details summary{cursor:pointer;color:var(--blue);font-size:11px;line-height:1.6;padding:3px 0}
.result-details p{font-size:13px}
.tool-options{margin-top:10px;padding-top:8px}
.timestamp-values{gap:8px;margin-top:8px}
.timestamp-row{gap:3px 10px}
.timestamp-row input{min-height:36px;padding:6px 9px}
.timestamp-row button{min-height:36px;padding-top:6px;padding-bottom:6px}
@media(max-width:760px){
  .topbar{padding-top:10px;padding-bottom:10px}
  .brand .logo{width:36px;height:36px;font-size:23px}
  .brand small{display:none}
  .tool-nav{padding-top:8px;padding-bottom:8px;margin-bottom:10px}
  .tool-nav>a{padding-top:8px;padding-bottom:8px;min-height:40px}
  .layout{padding:0 12px 16px}
  .tool-nav{margin-left:-12px;margin-right:-12px;padding-left:12px;padding-right:12px}
  .page-heading{display:none}
  .tool{padding:14px}
  .tool .tool-heading{margin-bottom:10px;gap:8px}
  .tool .tool-heading p,.tool-badge{display:none}
  .tool h2{font-size:20px;margin:0}
  #difference .tool-heading{grid-template-columns:minmax(0,1fr) minmax(0,40%)}
  #difference-summary{font-size:20px}
  .tool .fields{gap:8px;margin-bottom:8px}
  .tool .date-label{min-height:28px;margin-bottom:3px}
  .date-step{min-height:28px;padding-top:2px;padding-bottom:2px}
  .date-shortcuts{gap:4px}
  .difference-actions{gap:4px 8px}
  .difference-actions .text-button{min-height:32px;padding:4px 0}
  .tool .result{padding:12px;margin-top:10px}
  .tool>.helper{margin-top:12px}
  .tool input,.tool select{font-size:16px}
  #zones-form .fields.two{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .timestamp-row input{font-size:13px}
  .timestamp-row button{min-height:36px}
  .bottom-note{padding:16px 0}
}

@media(max-width:760px){
  .timestamp-values{gap:5px}
  .timestamp-row{grid-template-columns:54px minmax(0,1fr) 38px;gap:6px}
  .timestamp-label{grid-column:auto;font-size:10px;line-height:1.35}
  .timestamp-row input{padding:6px;font-size:12px}
  .timestamp-row button{min-width:0;width:38px;font-size:10px;padding:6px 0}
}

/* Separate date parts and a shared custom calendar on every device. */
.split-date{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.45fr) 38px;align-items:center;gap:6px;min-width:0;width:100%}
.tool .split-date .date-part{width:100%;min-width:0;text-align:center;padding:8px 4px;font-variant-numeric:tabular-nums}
.date-part-field,.date-time-field,.calendar-field{min-width:0}
.calendar-slot{position:relative;display:grid;place-items:center;width:38px;height:42px;border-radius:3px;color:var(--ink);cursor:pointer}
.calendar-slot svg{width:21px;height:21px;pointer-events:none}
.calendar-slot:focus-within{outline:3px solid #7099e8;outline-offset:2px}
.split-date.with-time{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.45fr) minmax(95px,1.7fr) 38px}
.tool .date-time-part{padding:8px 5px}
@media(max-width:480px){.split-date{gap:5px}.split-date.with-time{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.45fr) 38px}.with-time .date-time-field{grid-column:1/4;grid-row:2}.with-time .calendar-field{grid-column:4;grid-row:1}.tool .split-date input,.tool .split-date select{font-size:16px}}

.tool .split-date select.date-part{padding-left:5px;padding-right:2px;text-align:left;cursor:pointer}

.date-picker{position:relative}
.tool .date-trigger{width:100%;min-height:42px;padding:8px 4px;border:1px solid #cbd4e1;background:white;color:var(--ink);font-size:14px;font-weight:400;font-variant-numeric:tabular-nums;line-height:1.5}
.date-trigger::after{content:'';position:absolute;right:11px;top:50%;width:8px;height:8px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:translateY(-70%) rotate(45deg);pointer-events:none}
.tool .date-trigger:not(.year-trigger){padding-left:10px;padding-right:30px}
.date-popup{position:absolute;top:calc(100% + 5px);left:0;z-index:10;display:grid;grid-template-columns:repeat(7,1fr);gap:2px;width:238px;max-width:calc(100vw - 24px);padding:8px;background:white;border:1px solid var(--line);border-radius:5px;box-shadow:0 5px 20px #19253a26}
.tool .date-option{min-height:30px;height:30px;min-width:0;padding:0;border:0;border-radius:3px;background:white;color:var(--ink);font-size:12px;font-weight:400}
.tool .date-option:hover{background:#eef3fc}
.tool .date-option[aria-selected=true]{background:var(--blue);color:white;font-weight:600}
@media(max-width:760px){.tool .date-trigger{font-size:16px}}

.month-popup,.year-popup{grid-template-columns:repeat(3,minmax(0,1fr));width:238px}
.tool .year-trigger{position:absolute;right:0;top:0;width:28px;height:100%;padding:0;border:0;background:transparent;min-height:0}
.tool .split-date .date-year{padding-right:28px}

.day-weekday{font-size:9px;font-weight:600;line-height:18px;text-align:center;color:var(--muted)}

.calendar-field{position:relative}
.tool .calendar-slot{min-height:42px;padding:0;border:0;background:transparent;color:var(--ink)}
.calendar-popup{display:block;width:266px}
.calendar-header{display:grid;grid-template-columns:32px minmax(0,1fr) 32px;align-items:center;gap:4px;margin-bottom:8px}
.calendar-caption{text-align:center;font-size:13px;font-weight:600}
.tool .calendar-nav{min-height:32px;width:32px;padding:0;border:0;background:transparent;color:var(--ink);font-size:24px;line-height:1}
.calendar-days{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:2px}
.tool .calendar-day[aria-pressed=true]{background:var(--blue);color:white;font-weight:600}
.calendar-day[aria-current=date]{box-shadow:inset 0 0 0 1px var(--blue)}
.calendar-popup>.date-step{margin-top:6px}

.calendar-popup.opens-above{top:auto;bottom:calc(100% + 5px)}