:root {
    --bg: #150f22; --bg2: #0d0916; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.17);
    --ink: #f5f1fd; --muted: #bcb0d6; --accent: #a78bfa; --accent-ink: #1a0b3a; --field: rgba(255,255,255,.08);
    --good: #4ade80; --good-bg: rgba(74,222,128,.13); --bad: #fda4af; --bad-bg: rgba(251,113,133,.16); --warn: #fbbf24;
    color-scheme: dark;
}
@media (prefers-color-scheme: light) {
    :root { --bg: #f8f5ff; --bg2: #efe9fb; --card: #fff; --line: #ddd3f2; --ink: #1f1633; --muted: #5d5178;
            --accent: #6d28d9; --accent-ink: #fff; --field: #f7f4fe; --good: #15803d; --good-bg: #ecfdf3; --bad: #be123c; --bad-bg: #fff1f2; --warn: #a16207; color-scheme: light; }
}
:root[data-theme="light"] { --bg: #f8f5ff; --bg2: #efe9fb; --card: #fff; --line: #ddd3f2; --ink: #1f1633; --muted: #5d5178;
            --accent: #6d28d9; --accent-ink: #fff; --field: #f7f4fe; --good: #15803d; --good-bg: #ecfdf3; --bad: #be123c; --bad-bg: #fff1f2; --warn: #a16207; color-scheme: light; }
:root[data-theme="dark"] {
    --bg: #150f22; --bg2: #0d0916; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.17);
    --ink: #f5f1fd; --muted: #bcb0d6; --accent: #a78bfa; --accent-ink: #1a0b3a; --field: rgba(255,255,255,.08);
    --good: #4ade80; --good-bg: rgba(74,222,128,.13); --bad: #fda4af; --bad-bg: rgba(251,113,133,.16); --warn: #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(560px, 100%); min-width: 0; display: flex; flex-direction: column; }
.col-side { display: contents; }
.app > .topbar, .app > .back { order: 0; }
.app > header { order: 1; }
.col-main { order: 2; min-width: 0; }
.result { order: 3; }
.tools { 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; }
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: .7rem 0 .3rem; font-size: .9rem; font-weight: 600; color: var(--muted); }
input[type=text], select { width: 100%; min-width: 0; 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; }
select option, select optgroup { 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; }
input[aria-invalid=true] { border-color: var(--bad); }
::placeholder { color: var(--muted); opacity: .75; }
.hint { margin: .45rem 0 0; color: var(--muted); font-size: .88rem; }
.lead { margin: 0 0 .8rem; }
[hidden] { display: none !important; }

/* buttons */
.primary, .secondary, .danger, .ghost { 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; }
.secondary:disabled { opacity: .5; cursor: default; }
.ghost { border: 1px dashed var(--accent); background: transparent; color: var(--ink); font-weight: 600; }
.danger { border: 1px solid var(--bad); background: transparent; color: var(--bad); font-weight: 600; }
.link { display: block; min-height: 44px; padding: 0 .1rem; border: 0; background: none; color: var(--accent); font: inherit; font-size: .95rem; font-weight: 600; text-align: left; cursor: pointer; }
.link.small { min-height: 40px; font-size: .9rem; }
.add { margin-top: .8rem; border-style: dashed; border-color: var(--accent); }

/* money box with the currency symbol in front */
.money { display: flex; align-items: center; min-height: 48px; background: var(--field); border: 1px solid var(--line); border-radius: 12px; padding: 0 .8rem; min-width: 0; }
.money:focus-within { outline: 3px solid var(--accent); outline-offset: 2px; }
.money:has(input[aria-invalid=true]) { border-color: var(--bad); }
.money .sym { color: var(--muted); font-weight: 600; white-space: nowrap; flex: none; margin-right: .35rem; }
.money .sym:empty { display: none; }
.money input { border: 0; background: transparent; padding: .6rem 0; outline: none; min-height: 46px; }
.money input:focus-visible { outline: none; }

#intro { margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.err { margin: .35rem 0 0; color: var(--bad); font-size: .88rem; 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; }

/* each pack in its own bordered box */
.items { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; }
.item { border: 1px solid var(--line); border-left: 5px solid var(--accent); border-radius: 14px; padding: .7rem .85rem .6rem; background: var(--field); min-width: 0; }
.i-head { display: flex; align-items: center; gap: .6rem; min-height: 40px; }
.badge { flex: none; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 800; }
.i-title { flex: 1; min-width: 0; font-weight: 700; font-size: 1.05rem; overflow-wrap: anywhere; }
.rm { flex: none; min-height: 38px; padding: 0 .85rem; border-radius: 10px; border: 1px solid var(--line); background: transparent; color: var(--ink); font: inherit; font-size: .9rem; font-weight: 600; cursor: pointer; }
.two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: .6rem; }
.size-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: .4rem; }
.size-row select { padding-right: .3rem; }
.i-links { display: flex; flex-wrap: wrap; column-gap: 1rem; margin-top: .2rem; }
.i-out { margin: .3rem 0 .1rem; padding: .5rem .7rem; border-radius: 10px; background: var(--card); border: 1px solid var(--line); font-weight: 700; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.i-out.wait { font-weight: 500; color: var(--muted); }
.i-out.best { background: var(--good-bg); border-color: var(--good); color: var(--good); }
.i-out.bad { background: var(--bad-bg); border-color: var(--bad); color: var(--bad); font-weight: 600; }

/* the answer */
#per-box label { margin-top: 0; }
#verdict { margin-top: .9rem; padding: .9rem 1rem; border-radius: 14px; border: 1px solid var(--line); background: var(--field); }
#verdict.win { background: var(--good-bg); border-color: var(--good); }
.v-head { margin: 0; font-size: 1.45rem; font-weight: 800; line-height: 1.25; overflow-wrap: anywhere; }
#verdict.win .v-head { color: var(--good); }
.v-sub { margin: .3rem 0 0; color: var(--ink); overflow-wrap: anywhere; }
.ranked { list-style: none; margin: .8rem 0 0; padding: 0; display: grid; gap: .55rem; }
.ranked:empty { display: none; }
.r-item { border: 1px solid var(--line); border-radius: 12px; padding: .6rem .8rem; background: var(--field); min-width: 0; }
.r-item.best { border-color: var(--good); }
.r-top { display: flex; align-items: baseline; gap: .5rem; flex-wrap: wrap; }
.r-rank { flex: none; color: var(--muted); font-weight: 700; }
.r-name { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }
.r-per { margin-left: auto; font-weight: 800; font-variant-numeric: tabular-nums; white-space: nowrap; }
.r-line, .r-same { margin: .15rem 0 0; color: var(--muted); font-size: .92rem; overflow-wrap: anywhere; }
.r-tag { margin: .2rem 0 0; font-weight: 700; font-size: .93rem; }
.r-tag.best { color: var(--good); }
.r-tag.more { color: var(--bad); }
.notes { list-style: none; margin: .7rem 0 0; padding: 0; display: grid; gap: .4rem; }
.notes:empty { display: none; }
.notes li { padding: .55rem .75rem; border-radius: 10px; font-size: .93rem; border-left: 4px solid var(--warn); background: var(--field); overflow-wrap: anywhere; }
.notes li.bad { border-left-color: var(--bad); background: var(--bad-bg); }

/* tools */
.tools label:first-of-type { margin-top: 0; }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .5rem; margin-top: .8rem; }
.tools .hint { margin-top: .8rem; }

.faq h2 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
details { border-top: 1px solid var(--line); padding: .6rem 0; }
summary { cursor: pointer; font-weight: 600; min-height: 32px; }
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 price and size */
@media (max-width: 420px) {
    .two { grid-template-columns: minmax(0, 1fr); gap: 0; }
}
@media (max-width: 440px) {
    .tool-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
    .tool-grid #restart { grid-column: 1 / -1; }
}
/* very narrow phones: the light/dark switch shows only its icon so the top bar stays on one line */
@media (max-width: 360px) {
    .topbar .theme-toggle { padding: 0; width: 44px; justify-content: center; }
    .topbar .theme-toggle span { display: none; }
}

/* laptops and desktops: the packs on the left, the answer on the right */
@media (min-width: 900px) {
    .app { width: min(1120px, 100%); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); column-gap: 1.5rem; align-items: start; }
    .app > * { grid-column: 1 / -1; }
    .col-side { display: block; grid-column: 2; grid-row: 3; min-width: 0; }
    .app > .col-main { grid-column: 1; grid-row: 3; }
    .app > .faq, .app > footer { width: min(760px, 100%); justify-self: center; }
    .app > .topbar { grid-row: 1; }
    .app > header { grid-row: 2; }
    .app > .faq { grid-row: 4; }
    .app > footer { grid-row: 5; }
    header h1 { font-size: 2.3rem; }
    .v-head { font-size: 1.6rem; }
}