:root {
    --bg: #0d1c29; --bg2: #08131c; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.17);
    --ink: #eef7fd; --muted: #a9c2d4; --accent: #38bdf8; --accent-ink: #04263a; --field: rgba(255,255,255,.08);
    --good: #4ade80; --bad: #fda4af; --soft: rgba(56,189,248,.14); --warm: #fbbf24;
    color-scheme: dark;
}
@media (prefers-color-scheme: light) {
    :root { --bg: #f0f9ff; --bg2: #e0f2fe; --card: #fff; --line: #cfe3f1; --ink: #0b2233; --muted: #45647a;
            --accent: #0369a1; --accent-ink: #fff; --field: #f6fbff; --good: #15803d; --bad: #be123c; --soft: #e0f2fe; --warm: #b45309; color-scheme: light; }
}
:root[data-theme="light"] { --bg: #f0f9ff; --bg2: #e0f2fe; --card: #fff; --line: #cfe3f1; --ink: #0b2233; --muted: #45647a;
            --accent: #0369a1; --accent-ink: #fff; --field: #f6fbff; --good: #15803d; --bad: #be123c; --soft: #e0f2fe; --warm: #b45309; color-scheme: light; }
:root[data-theme="dark"] {
    --bg: #0d1c29; --bg2: #08131c; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.17);
    --ink: #eef7fd; --muted: #a9c2d4; --accent: #38bdf8; --accent-ink: #04263a; --field: rgba(255,255,255,.08);
    --good: #4ade80; --bad: #fda4af; --soft: rgba(56,189,248,.14); --warm: #fbbf24;
    color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; padding: clamp(1rem,4vw,2.5rem) 1rem 4rem; display: flex; justify-content: center;
       font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--ink);
       background: var(--bg2) linear-gradient(180deg, var(--bg), var(--bg2) 900px) no-repeat; touch-action: manipulation; }
.app { width: min(580px, 100%); min-width: 0; display: flex; flex-direction: column; }
.col-main, .col-side { display: contents; }
.app > .topbar, .app > .back { order: 0; }
.app > header { order: 1; }
.in-card { order: 2; }
.result { order: 3; }
.mine { order: 4; }
.app > .faq { order: 5; }
.app > footer { order: 6; }
header { text-align: center; margin-bottom: 1.1rem; }
h1 { margin: 0; font-size: 1.85rem; line-height: 1.2; letter-spacing: -.02em; }
.sub { margin: .4rem 0 0; color: var(--muted); font-size: 1rem; }
.today { margin: .5rem 0 0; font-weight: 600; font-size: .95rem; }
h2 { margin: 0 0 .7rem; font-size: 1.15rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 1.1rem; margin-bottom: .9rem; min-width: 0; }
label { display: block; margin: .9rem 0 .35rem; font-size: .9rem; font-weight: 600; color: var(--muted); }
.opt { font-weight: 400; color: var(--muted); }
input[type=text], input[type=date], select { display: block; width: 100%; min-width: 0; max-width: 100%; min-height: 48px; padding: .6rem .8rem; font: inherit; font-size: 1.05rem; color: var(--ink);
       background: var(--field); border: 1px solid var(--line); border-radius: 12px; -webkit-appearance: none; appearance: none; }
input[type=date] { line-height: 1.3; }
input[type=date]::-webkit-date-and-time-value { text-align: left; }
select { padding-right: 2rem; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
       background-position: calc(100% - 18px) 55%, calc(100% - 12px) 55%; background-size: 6px 6px; background-repeat: no-repeat; }
select option { color: #111; background: #fff; }
input:focus-visible, button:focus-visible, select:focus-visible, summary:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
::placeholder { color: var(--muted); opacity: .75; }
.hint { margin: .45rem 0 0; color: var(--muted); font-size: .88rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; margin: 0; }
[hidden] { display: none !important; }

/* buttons */
.primary, .secondary { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 48px; padding: .5rem .8rem; border-radius: 12px;
       font: inherit; font-weight: 700; text-align: center; text-decoration: none; cursor: pointer; }
.primary { border: 0; background: var(--accent); color: var(--accent-ink); }
.secondary { border: 1px solid var(--line); background: var(--field); color: var(--ink); font-weight: 600; }
.link { display: block; min-height: 44px; margin-top: .4rem; padding: 0 .1rem; border: 0; background: none; color: var(--accent); font: inherit; font-size: .95rem; font-weight: 600; text-align: left; cursor: pointer; }
.chip { min-height: 44px; padding: 0 .9rem; border-radius: 999px; border: 1px solid var(--line); background: var(--field); color: var(--ink); font: inherit; font-size: .92rem; font-weight: 600; cursor: pointer; white-space: nowrap; }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .6rem; }
.err { margin: .6rem 0 0; color: var(--bad); font-weight: 600; }
.err:empty { margin: 0; }
.msg { margin: .5rem 0 0; color: var(--muted); font-size: .92rem; overflow-wrap: anywhere; }
.msg:empty { margin: 0; }
.msg button { min-height: 40px; margin-left: .4rem; padding: 0 .8rem; border: 1px solid var(--accent); border-radius: 10px; background: none; color: var(--accent); font: inherit; font-weight: 700; cursor: pointer; }
.two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .6rem; }
.amount-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); }
.date-row { display: flex; gap: .5rem; align-items: center; }
.date-row input { flex: 1; }
.date-row .chip { flex: none; }
.form-btns { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: .5rem; margin-top: 1rem; }

/* tabs */
.tabs { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.25fr) minmax(0, 1.1fr); gap: .3rem; padding: .3rem; margin: -.2rem -.2rem .2rem; border-radius: 14px; background: var(--field); border: 1px solid var(--line); }
.tabs button { min-height: 48px; padding: .3rem .4rem; border: 0; border-radius: 10px; background: transparent; color: var(--muted); font: inherit; font-size: .93rem; font-weight: 700; line-height: 1.2; cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-ink); }
.panel > label:first-child, .panel > .two:first-child label { margin-top: 1rem; }
fieldset { border: 0; margin: 1rem 0 0; padding: 0; min-width: 0; }
legend { padding: 0; margin-bottom: .45rem; font-size: .9rem; font-weight: 600; color: var(--muted); }
.toggles { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .45rem; }
.toggles label { display: flex; align-items: center; gap: .5rem; margin: 0; min-height: 48px; padding: .4rem .7rem; border: 1px solid var(--line); border-radius: 12px; background: var(--field);
       color: var(--ink); font-size: .95rem; font-weight: 600; cursor: pointer; line-height: 1.25; }
.toggles label:has(input:checked) { border-color: var(--accent); background: var(--soft); }
.toggles input, .check input { flex: none; width: 20px; height: 20px; margin: 0; accent-color: var(--accent); }
.check { display: flex; align-items: center; gap: .6rem; margin: .8rem 0 0; min-height: 44px; color: var(--ink); font-size: .97rem; font-weight: 500; cursor: pointer; line-height: 1.3; }

/* working days */
.workdays { margin-top: 1rem; border: 1px solid var(--line); border-radius: 12px; padding: 0 .8rem; background: var(--field); }
.workdays summary { min-height: 48px; display: flex; align-items: center; gap: .3rem; font-weight: 600; cursor: pointer; flex-wrap: wrap; padding: .3rem 0; }
.workdays summary span { color: var(--muted); font-weight: 500; }
.workdays[open] { padding-bottom: .8rem; }
.workdays fieldset { margin-top: .3rem; }
.days { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: .3rem; }
.days label { display: flex; flex-direction: column; align-items: center; gap: .2rem; margin: 0; padding: .45rem 0; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); font-size: .85rem; cursor: pointer; background: var(--card); }
.days label:has(input:checked) { border-color: var(--accent); background: var(--soft); }
.days input { width: 20px; height: 20px; margin: 0; accent-color: var(--accent); }
.sub-h { margin: 1rem 0 0; font-size: .95rem; }
.workdays .date-row { margin-top: .5rem; }
.hols { list-style: none; margin: .5rem 0 0; padding: 0; display: grid; gap: .3rem; }
.hols:empty { display: none; }
.hol { display: flex; justify-content: space-between; align-items: center; gap: .5rem; padding: .15rem .3rem .15rem .7rem; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.hol button { min-height: 40px; padding: 0 .8rem; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--muted); font: inherit; font-size: .88rem; font-weight: 600; cursor: pointer; }
.clear { margin-top: 1rem; }

/* answer */
.result { border-top: 5px solid var(--accent); }
.big-label { margin: 0; font-size: .95rem; font-weight: 600; color: var(--muted); }
.big { margin: .05rem 0 .3rem; font-size: clamp(2.3rem, 12vw, 3.2rem); font-weight: 800; letter-spacing: -.02em; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.15; overflow-wrap: anywhere; }
.big.date { font-size: clamp(1.8rem, 8.5vw, 2.4rem); }
.big.none { font-size: 1.5rem; color: var(--muted); }
.r-line { margin: 0; font-size: 1.08rem; font-weight: 600; overflow-wrap: anywhere; }
.r-line:empty { display: none; }
.facts { margin: .9rem 0 0; display: grid; gap: .35rem; }
.facts:empty { display: none; }
.facts dt { margin: .35rem 0 0; font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 700; }
.facts dd { margin: 0; font-size: 1rem; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.note { margin: .9rem 0 0; padding: .55rem .75rem; border-left: 4px solid var(--warm); border-radius: 8px; background: var(--field); font-size: .93rem; }
.save-box { margin-top: 1rem; }
.save-box label { margin-top: 0; }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .5rem; margin-top: .8rem; }

/* My dates: each one in its own box */
.mine-hint { margin: -.4rem 0 .8rem; }
.saved { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.saved:empty { display: none; }
.saved-item { border: 1px solid var(--line); border-left: 5px solid var(--accent); border-radius: 12px; padding: .6rem .8rem .7rem; background: var(--field); min-width: 0; }
.saved-item.birthday { border-left-color: var(--warm); }
.saved-item.anniversary { border-left-color: #f472b6; }
.saved-item.past { opacity: .8; border-left-color: var(--muted); }
.saved-item.is-today { outline: 2px solid var(--warm); }
.saved-item.editing { outline: 3px solid var(--accent); }
.s-top { display: flex; align-items: baseline; justify-content: space-between; gap: .6rem; }
.s-name { font-weight: 700; font-size: 1.05rem; overflow-wrap: anywhere; min-width: 0; }
.s-kind { flex: none; font-size: .78rem; font-weight: 600; color: var(--muted); border: 1px solid var(--line); border-radius: 99px; padding: 0 .5rem; }
.s-head { margin: .15rem 0 0; font-size: 1.15rem; font-weight: 800; color: var(--accent); }
.saved-item.birthday .s-head { color: var(--warm); }
.saved-item.past .s-head { color: var(--muted); }
.s-sub { margin: .1rem 0 0; color: var(--muted); font-size: .9rem; overflow-wrap: anywhere; }
.s-btns { display: flex; gap: .4rem; margin-top: .5rem; }
.s-btns button { min-height: 40px; padding: 0 1rem; border-radius: 10px; border: 1px solid var(--line); background: transparent; color: var(--ink); font: inherit; font-size: .9rem; font-weight: 600; cursor: pointer; }
.item-form h3 { margin: .6rem 0 0; font-size: 1.05rem; }
.saved-item .item-form label:first-child { margin-top: .2rem; }
.empty { margin: 0; padding: .7rem .9rem; border: 1px dashed var(--line); border-radius: 12px; color: var(--muted); font-size: .93rem; }
#new-form { margin-top: .4rem; padding-top: .3rem; border-top: 1px solid var(--line); }
.mine > .hint:last-child { margin-top: .9rem; }

.faq h2 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
.faq details { border-top: 1px solid var(--line); padding: .6rem 0; }
.faq summary { cursor: pointer; font-weight: 600; min-height: 32px; }
.faq details p { margin: .4rem 0 0; color: var(--muted); }
footer { text-align: center; margin-top: 1.5rem; font-size: .9rem; } footer a { color: var(--muted); }

/* back to the list of all apps */
.back { display: inline-flex; align-items: center; gap: .4rem; min-height: 44px; margin: 0 0 .5rem; padding: 0 1rem 0 .8rem; border: 1px solid var(--line, rgba(127,127,127,.4)); border-radius: 999px; color: var(--muted, var(--mut, inherit)); font-size: .92rem; font-weight: 600; text-decoration: none; background: transparent; align-self: flex-start; }
.back:hover { color: var(--ink, inherit); border-color: currentColor; }
.back:focus-visible { outline: 3px solid var(--accent, var(--acc, #fff)); outline-offset: 2px; }

/* narrow phones: stack side-by-side fields */
@media (max-width: 400px) {
    .two, .amount-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
    .tabs button { font-size: .86rem; }
    .tool-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
    .tool-grid #print { grid-column: 1 / -1; }
    .days label { font-size: .78rem; }
}
@media (max-width: 360px) {
    .topbar .theme-toggle { padding: 0; width: 44px; justify-content: center; }
    .topbar .theme-toggle span { display: none; }
    .toggles label { font-size: .9rem; padding: .4rem .5rem; }
    .chip { padding: 0 .7rem; }
}

@media print {
    body { background: #fff; color: #000; padding: 0; display: block; font-size: 12pt; }
    .back, .in-card, .tool-grid, .save-box, .msg, .faq, footer, .s-btns, #open-new, #new-form, .mine .hint, header .sub { display: none !important; }
    .app { display: block; width: 100%; }
    .card { border: 1px solid #999; background: #fff; color: #000; }
    .big, .s-head, .facts dt, .s-sub, .big-label { color: #000 !important; }
}

/* laptops and desktops: the questions on the left, the answer and My dates on the right */
@media (min-width: 900px) {
    .app { width: min(1120px, 100%); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 1.5rem; align-items: start; }
    .app > * { grid-column: 1 / -1; }
    .col-main { display: block; grid-column: 1; grid-row: 3; min-width: 0; }
    .col-side { display: block; grid-column: 2; grid-row: 3; min-width: 0; }
    .app > .topbar { grid-row: 1; }
    .app > header { grid-row: 2; }
    .app > .faq { grid-row: 4; }
    .app > footer { grid-row: 5; }
    .app > .faq, .app > footer { width: min(760px, 100%); justify-self: center; }
    header h1 { font-size: 2.3rem; }
    .in-card { padding: 1.3rem; }
    .big { font-size: 3.4rem; }
    .big.date { font-size: 2.5rem; }
}