/* Calculator page: the machine (inputs + display) and the paper tape (results). */

.desk {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 4px max(16px, env(safe-area-inset-right)) 48px max(16px, env(safe-area-inset-left));
}
@media (min-width: 900px) {
  .desk { grid-template-columns: minmax(360px, 440px) minmax(0, 1fr); gap: 28px; align-items: start; }
  .machine { position: sticky; top: 16px; }
}
@media (min-width: 1180px) {
  .desk { grid-template-columns: 460px minmax(0, 1fr); gap: 40px; }
}

/* ---- machine ---- */
.machine {
  background: linear-gradient(180deg, var(--machine-hi) 0%, var(--machine) 120px, var(--machine-lo) 100%);
  color: var(--machine-ink);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-machine);
  padding: 18px 18px 20px;
}
.machine :focus-visible { outline-color: var(--focus); }
@media (min-width: 480px) { .machine { padding: 22px 24px 24px; } }
@media (max-width: 299px) { .machine { padding: 14px 12px 16px; } .tape { padding-left: 12px; padding-right: 12px; } }

.machine-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 2px 12px; margin-bottom: 14px; }
.machine-head h1 { font-size: 1.15rem; font-weight: 750; font-stretch: 92%; letter-spacing: .005em; }
.machine-head p { font-size: .85rem; color: var(--machine-muted); }

/* display */
.display {
  background: var(--display);
  border-radius: 14px;
  padding: 14px 16px 14px;
  box-shadow: inset 0 3px 10px rgba(0,0,0,.55), inset 0 0 0 1px rgba(255,255,255,.04), 0 1px 0 rgba(255,255,255,.1);
  color: var(--display-ink);
  outline: none;
}
.display-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 4px 10px; min-height: 24px; }
.display-label { font-size: .8rem; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; color: var(--display-dim); }
.display-flag {
  font-size: .75rem; font-weight: 650; padding: 2px 8px; border-radius: 999px;
  border: 1px solid var(--display-line); color: var(--display-dim); white-space: nowrap;
}
.display-flag:empty { display: none; }
.display-value {
  display: block;
  font-size: clamp(2.1rem, 9vw, 2.9rem);
  font-weight: 800;
  font-stretch: 78%;
  line-height: 1.05;
  letter-spacing: -.01em;
  text-align: right;
  margin: 6px 0 10px;
  white-space: nowrap;        /* never split a number; app.js shrinks the size to fit */
  overflow: hidden;
  transition: color .2s;
}
.display.is-off .display-value { color: var(--display-dim); opacity: .7; }
.display-sub {
  display: flex; flex-wrap: wrap; gap: 8px 18px;
  margin: 0; padding-top: 10px; border-top: 1px dashed var(--display-line);
}
.display-sub div { flex: 1 0 auto; min-width: 0; }  /* grow, never shrink below the number */
.display-sub dt { font-size: .72rem; color: var(--display-dim); text-transform: uppercase; letter-spacing: .06em; font-weight: 600; }
.display-sub dd { margin: 2px 0 0; font-weight: 700; font-size: .98rem; font-stretch: 88%; white-space: nowrap; }
.display-note {
  display: flex; gap: 8px; align-items: flex-start;
  margin-top: 12px; padding: 9px 11px; border-radius: 9px;
  background: rgba(255, 230, 160, .1); color: var(--display-ink); font-size: .86rem; line-height: 1.45;
}
.display-note[hidden] { display: none; }
.display-note .icon { margin-top: 2px; color: var(--gold); }

/* inputs */
.keys { margin-top: 18px; display: grid; gap: 18px; }
.field { margin: 0; padding: 0; border: 0; min-width: 0; }
.field > label, .field > legend {
  display: block; padding: 0; margin-bottom: 8px;
  font-size: .82rem; font-weight: 650; letter-spacing: .04em; text-transform: uppercase; color: var(--machine-muted);
}
.entry {
  display: flex; align-items: center; gap: 8px;
  background: var(--display); border-radius: 12px; padding: 0 14px;
  box-shadow: inset 0 2px 6px rgba(0,0,0,.5), 0 1px 0 rgba(255,255,255,.08);
  border: 2px solid transparent; transition: border-color .15s;
}
.entry:focus-within { border-color: var(--gold); }
.entry.is-invalid { border-color: #ff8a7a; }
.entry-prefix { font-weight: 700; color: var(--display-dim); font-size: 1.1rem; }
.entry input {
  flex: 1; min-width: 0; height: 56px; border: 0; background: transparent; outline: none;
  color: var(--display-ink); caret-color: var(--gold);
  font-size: 1.55rem; font-weight: 750; font-stretch: 85%; text-align: right; letter-spacing: .01em;
}
.help { margin-top: 7px; font-size: .84rem; color: var(--machine-muted); }
.field-error { margin-top: 7px; font-size: .86rem; color: #ffb4a8; font-weight: 600; }
.field-error[hidden] { display: none; }

.quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 10px; }
@media (min-width: 360px) { .quick { grid-template-columns: repeat(6, 1fr); } }
.chip {
  min-height: 36px; padding: 0 4px; border-radius: 8px; white-space: nowrap;
  border: 1px solid var(--machine-line); background: rgba(255,255,255,.04); color: var(--machine-ink);
  font-size: .86rem; font-weight: 600; transition: background-color .15s, border-color .15s;
}
.chip:hover { background: rgba(255,255,255,.1); border-color: var(--machine-muted); }
.chip[aria-pressed="true"] { background: rgba(242,193,78,.16); border-color: var(--gold); color: var(--gold-hi); }
@media (pointer: coarse) { .chip { min-height: 44px; } }

/* segmented keys */
.segmented { display: grid; gap: 6px; }
.seg-tenor { grid-template-columns: repeat(auto-fit, minmax(48px, 1fr)); }
.seg-cust { grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); }
.seg { position: relative; display: grid; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg-face {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: 52px; padding: 6px 4px 5px; border-radius: 10px;
  background: var(--key); color: var(--key-ink); box-shadow: inset 0 -3px 0 var(--key-edge);
  font-weight: 650; text-align: center; line-height: 1.15; user-select: none;
  transition: background-color .15s, color .15s, transform .08s, box-shadow .08s;
}
.seg-cust .seg-face { flex-direction: row; min-height: 48px; font-size: .95rem; }
.seg-num { font-size: 1.2rem; font-weight: 800; font-stretch: 85%; }
.seg-unit { font-size: .7rem; font-weight: 600; opacity: .8; }
.seg-tag { font-size: .62rem; font-weight: 600; opacity: .75; margin-top: 1px; }
.seg:hover .seg-face { background: var(--key-hi); }
.seg input:checked + .seg-face {
  background: var(--gold); color: var(--gold-ink); box-shadow: inset 0 -2px 0 var(--gold-edge);
  transform: translateY(1px);
}
.seg input:focus-visible + .seg-face { outline: 3px solid var(--focus); outline-offset: 2px; }
.seg input:active + .seg-face { transform: translateY(2px); box-shadow: inset 0 -1px 0 var(--key-edge); }

.machine-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding-top: 4px; }
.machine-actions .key { min-width: 0; padding: 0 10px; text-align: center; line-height: 1.2; }
@media (max-width: 279px) { .machine-actions { grid-template-columns: minmax(0, 1fr); } }
.machine-actions .key-gold { grid-column: 1 / -1; min-height: 52px; font-size: 1rem; }
.toast { min-height: 1.2em; font-size: .86rem; color: var(--gold-hi); text-align: right; margin-top: -6px; }
.model-note { font-size: .82rem; line-height: 1.4; padding: 8px 10px; border-radius: 8px; background: var(--warn-bg); color: #3b2600; border: 1px solid #e7c271; }
.tape-verify { font-weight: 600; color: var(--paper-ink, inherit); }

/* ---- tape ---- */
.tape-wrap { position: relative; min-width: 0; max-width: 720px; width: 100%; justify-self: center; }
@media (min-width: 900px) { .tape-wrap { justify-self: start; } }
.tape-slot {
  height: 14px; margin: 0 -6px; border-radius: 8px 8px 4px 4px;
  background: linear-gradient(180deg, var(--machine-lo), var(--machine));
  box-shadow: inset 0 -4px 6px rgba(0,0,0,.45);
}
.tape {
  --zig: 9px;
  position: relative;
  margin: -6px 6px 0;
  background: var(--paper);
  color: var(--paper-ink);
  padding: 22px clamp(16px, 4vw, 30px) calc(26px + var(--zig));
  box-shadow: var(--shadow-paper);
  /* torn zig-zag bottom edge */
  -webkit-mask: linear-gradient(#000 0 0) top / 100% calc(100% - var(--zig)) no-repeat,
    conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--zig) * 2) var(--zig) repeat-x;
  mask: linear-gradient(#000 0 0) top / 100% calc(100% - var(--zig)) no-repeat,
    conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--zig) * 2) var(--zig) repeat-x;
  font-family: var(--font-tape);
  font-size: .86rem;
  line-height: 1.55;
}
.tape ::selection { background: var(--paper-hilite); color: var(--paper-ink); }
.tape :focus-visible { outline-color: var(--focus-on-light); }
.tape.is-feeding { animation: feed .32s var(--ease-out); }
@keyframes feed { from { transform: translateY(-10px); } to { transform: none; } }

.tape h2, .tape h3 { font-family: var(--font-ui); }
.tape-head { text-align: center; padding-bottom: 14px; border-bottom: 1px dashed var(--paper-rule); }
.tape-logo { justify-content: center; margin-bottom: 12px; }
.tape-logo .logo { height: 34px; }
.tape-head h2 { font-size: 1.08rem; font-weight: 800; font-stretch: 90%; letter-spacing: .04em; text-transform: uppercase; color: var(--paper-accent); }
.tape-meta { color: var(--paper-muted); font-size: .8rem; margin-top: 2px; }
.lines-input { margin-top: 12px; text-align: left; }

.tape-sec { padding: 16px 0; border-bottom: 1px dashed var(--paper-rule); }
.tape-sec h3 { font-size: .95rem; font-weight: 750; color: var(--paper-ink); margin-bottom: 10px; }

/* label .......... value lines */
.lines { margin: 0; display: grid; gap: 4px; }
/* receipt row: the value always stays in the right column on the same row;
   when space runs out the label wraps and the value aligns with its last line */
.lines div { display: flex; flex-wrap: nowrap; align-items: flex-end; column-gap: 8px; min-width: 0; }
.lines dt { color: var(--paper-muted); flex: 0 1 auto; min-width: 0; overflow-wrap: anywhere; line-height: 1.4; order: 0; }
.lines dd { order: 2; flex: none; margin: 0 0 0 auto; text-align: right; white-space: nowrap; font-weight: 600; color: var(--paper-ink); line-height: 1.4; }
/* dotted leader between label and value, like a printed receipt */
.lines div::after {
  content: ""; order: 1; flex: 1 1 10px; min-width: 10px; align-self: flex-end;
  border-bottom: 1px dotted var(--paper-rule); margin-bottom: .45em;
}
.lines .is-strong::after, .lines .is-group::after { border-bottom-color: transparent; }
.lines .is-strong dt, .lines .is-strong dd { color: var(--paper-ink); font-weight: 800; }
.lines .is-strong { padding: 6px 0; border-top: 1px solid var(--paper-ink); border-bottom: 1px solid var(--paper-ink); margin: 4px 0; font-size: 1.02rem; }
.lines .is-sub dt { padding-left: 14px; }
.lines .is-neg dd { color: var(--bad); }
.lines .is-group { margin-top: 10px; }
.lines .is-group dt { color: var(--paper-ink); font-weight: 700; font-family: var(--font-ui); }
.lines-total { font-size: .92rem; }
@media (max-width: 420px) {
  .tape { font-size: .8rem; }
  .lines-total { font-size: .86rem; }
  .lines .is-strong { font-size: .94rem; }
}
.lines dt .formula { display: block; font-size: .74rem; color: var(--paper-muted); opacity: .9; }

/* comparison rows */
.cmp { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.cmp-row {
  padding: 11px 12px 12px; border-radius: 10px; border: 1px solid var(--paper-rule);
  background: color-mix(in srgb, var(--paper) 92%, var(--paper-rule));
}
.cmp-row.is-best { border-color: var(--paper-accent); background: var(--paper); box-shadow: inset 0 0 0 1px var(--paper-accent); }
.cmp-row.is-dep { border-style: dashed; background: transparent; }
.cmp-top { display: flex; align-items: baseline; justify-content: space-between; gap: 6px 12px; flex-wrap: wrap; }
.cmp-name { font-family: var(--font-ui); font-weight: 750; font-size: .98rem; display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.cmp-tag {
  font-family: var(--font-ui); font-size: .7rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  padding: 1px 7px; border-radius: 999px; background: var(--paper-accent); color: #fff;
}
.cmp-row.is-dep .cmp-tag { background: transparent; color: var(--paper-muted); border: 1px solid var(--paper-rule); }
.cmp-total { font-weight: 800; font-size: clamp(.86rem, 4.2vw, 1.08rem); margin-left: auto; white-space: nowrap; }
.cmp-bar { height: 8px; border-radius: 4px; background: color-mix(in srgb, var(--paper-rule) 45%, transparent); margin: 8px 0 9px; overflow: hidden; display: flex; }
.cmp-bar i { display: block; height: 100%; background: var(--bar); }
.cmp-bar i + i { background: var(--gold); }
.cmp-row.is-dep .cmp-bar i { background: var(--bar-dep); }
.cmp-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 0; font-size: .82rem; }
.cmp-meta div { display: flex; flex-direction: column; gap: 0; flex: 1 0 auto; min-width: 84px; }
.cmp-meta dt { color: var(--paper-muted); font-size: .72rem; }
.cmp-meta dd { margin: 0; font-weight: 600; white-space: nowrap; }
.cmp-diff { margin-top: 6px; font-size: .8rem; font-weight: 700; }
.cmp-diff.up { color: var(--good); }
.cmp-diff.down { color: var(--bad); }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: .76rem; color: var(--paper-muted); margin: -2px 0 10px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 10px; height: 10px; border-radius: 2px; background: var(--bar); }
.legend i.cb { background: var(--gold); }

.tape-note { font-size: .76rem; color: var(--paper-muted); margin-top: 10px; line-height: 1.5; }

.tape-details summary {
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  cursor: pointer; min-height: 44px; margin: -8px 0;
}
.tape-details summary::-webkit-details-marker { display: none; }
.tape-details summary h3 { margin: 0; display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tape-details summary .chev { transition: transform .2s var(--ease-out); color: var(--paper-muted); }
.tape-details[open] summary .chev { transform: rotate(180deg); }
.tape-details[open] summary { margin-bottom: 8px; }
.tape-details summary:hover h3 { text-decoration: underline; text-underline-offset: .25em; }

.calc-block + .calc-block { margin-top: 14px; }
.calc-block h4 { font-family: var(--font-ui); font-size: .85rem; font-weight: 750; margin: 0 0 4px; color: var(--paper-accent); }

.tape-foot { padding-top: 14px; text-align: center; color: var(--paper-muted); font-size: .76rem; display: grid; gap: 2px; }

/* mini display (phones, when the main display scrolled away) */
.mini-display {
  position: fixed; left: 12px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); z-index: 20;
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  padding: 10px 14px; border-radius: 14px; background: var(--display); color: var(--display-ink);
  box-shadow: 0 12px 30px -10px rgba(0,0,0,.55);
  transform: translateY(140%); transition: transform .25s var(--ease-out);
}
.mini-display.is-shown { transform: none; }
.mini-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--display-dim); font-weight: 650; }
.mini-value { font-weight: 800; font-size: 1.2rem; font-stretch: 82%; }
.mini-equiv { margin-left: auto; font-size: .85rem; color: var(--display-dim); font-weight: 600; }
@media (min-width: 900px) { .mini-display { display: none; } }
@media (max-width: 899px) { .page-calc { padding-bottom: 76px; } }

/* error page */
.desk-error { display: block; }
.panel-error {
  display: flex; gap: 14px; max-width: 640px; margin: 40px auto; padding: 20px; border-radius: var(--radius-m);
  background: var(--warn-bg); color: #3b2600; border: 1px solid #e7c271;
}
.panel-error .icon { width: 24px; height: 24px; color: var(--warn); margin-top: 2px; }
.panel-error h1 { font-size: 1.15rem; margin-bottom: 6px; }

/* ---- print: only the tape ---- */
@media print {
  @page { margin: 12mm; }
  body { background: #fff; }
  .topbar, .machine, .tape-slot, .mini-display, .skip-link { display: none !important; }
  .desk { display: block; padding: 0; }
  .tape-wrap { max-width: none; }
  .tape { margin: 0; box-shadow: none; -webkit-mask: none; mask: none; background: #fff; color: #000; padding: 0; font-size: 10.5pt; }
  .tape-details summary .chev { display: none; }
  .tape-logo .logo { height: 12mm; }
  .cmp-row { break-inside: avoid; }
}