/* invoice.css — standalone, neutral, professional invoice generator.
   Self-contained: no dependency on brand.css / guide.css. Light background,
   a single restrained slate/indigo accent, system UI type. Built to feel like
   a clean SaaS utility that anyone — not just dancers — would trust with an
   invoice. The printed invoice (.paper) mirrors that same neutral, client-
   appropriate feel: plain paper stock, no loud branding. */

:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --ink: #1a1d23;
  --ink-muted: #6b7280;
  --ink-faint: #9aa1ac;
  --border: #e3e6ea;
  --border-strong: #d3d7dd;
  --accent: #4f5fd6;
  --accent-hi: #6472e0;
  --accent-lo: #3c4ab8;
  --accent-tint: color-mix(in srgb, var(--accent) 8%, transparent);
  --green: #2f9e5b;
  --font: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Roboto Mono", Menlo, Consolas, monospace;
  --shadow-sm: 0 1px 2px rgba(20, 20, 30, .04);
  --shadow-md: 0 8px 24px rgba(20, 20, 30, .08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

/* ───────────────────────── page head ───────────────────────── */
.ihead-wrap {
  padding: clamp(32px, 6vh, 56px) clamp(20px, 4.5vw, 56px) clamp(20px, 3vh, 28px);
  max-width: 1400px; margin: 0 auto;
}
.back-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500;
  color: var(--ink-muted); text-decoration: none; margin-bottom: 18px;
  transition: color .15s ease;
}
.back-link:hover { color: var(--accent); }
.ihead-wrap h1 {
  margin: 0; font-weight: 700;
  font-size: clamp(26px, 3.4vw, 36px); line-height: 1.1; letter-spacing: -.02em; color: var(--ink);
}
.ihead-wrap .dek {
  margin: 10px 0 0; max-width: 62ch;
  font-size: 15px; line-height: 1.55; color: var(--ink-muted);
}

/* ───────────────────────── the generator grid ───────────────────────── */
.gen {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: minmax(340px, 1fr) minmax(420px, 1.15fr);
  gap: 0; align-items: start;
  max-width: 1400px; margin: 0 auto;
  border-top: 1px solid var(--border);
}
@media (max-width: 900px) { .gen { grid-template-columns: 1fr; } }

/* ---- form side ---- */
.form { padding: 30px clamp(20px, 4vw, 40px) 60px; border-right: 1px solid var(--border); }
@media (max-width: 900px) { .form { border-right: 0; border-bottom: 1px solid var(--border); } }

fieldset { border: 0; margin: 0 0 30px; padding: 0; }
legend {
  font-size: 12px; font-weight: 700;
  letter-spacing: .04em; text-transform: uppercase; color: var(--ink-muted);
  margin-bottom: 16px; padding-bottom: 10px; border-bottom: 1px solid var(--border); width: 100%;
}
.fld { margin-bottom: 14px; }
.fld label {
  display: block; font-size: 12px; font-weight: 600;
  color: var(--ink-muted); margin-bottom: 6px;
}
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

input, textarea, select {
  width: 100%; background: var(--surface);
  border: 1px solid var(--border-strong); border-radius: 8px;
  /* 16px floor: anything smaller makes iOS Safari zoom-jump on focus */
  color: var(--ink); font-family: var(--font); font-size: 16px;
  padding: 10px 12px; outline: none; transition: border-color .15s, box-shadow .15s;
  box-shadow: var(--shadow-sm);
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-tint);
}
textarea { resize: vertical; min-height: 62px; font-family: var(--font); }
select { cursor: pointer; }
::placeholder { color: var(--ink-faint); }

/* line items */
.items { display: flex; flex-direction: column; gap: 10px; }
.item { display: grid; grid-template-columns: 1fr 88px 56px 30px; gap: 8px; align-items: center; }
.item input { padding: 9px 10px; font-size: 16px; }
.item .rm {
  background: transparent; border: 1px solid var(--border-strong); border-radius: 7px;
  color: var(--ink-muted); font-size: 14px; cursor: pointer;
  height: 38px; transition: all .15s;
}
.item .rm:hover { border-color: #c0392b; color: #c0392b; background: rgba(192, 57, 43, .06); }
.ihead {
  display: grid; grid-template-columns: 1fr 88px 56px 30px; gap: 8px;
  font-size: 11px; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--ink-faint); margin-bottom: 2px;
}
.addline {
  margin-top: 12px; background: transparent;
  border: 1px dashed var(--border-strong); border-radius: 8px;
  color: var(--accent); font-size: 13px; font-weight: 600;
  padding: 11px 14px; cursor: pointer; width: 100%; transition: background .15s, border-color .15s;
}
.addline:hover { background: var(--accent-tint); border-color: var(--accent); }

.formbtns { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; align-items: center; }
.saved {
  font-size: 12px; font-weight: 600; color: var(--green);
  opacity: 0; transition: opacity .3s;
}
.saved.show { opacity: 1; }
.toggle {
  font-size: 12px; color: var(--ink-muted);
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
}
.toggle input { width: auto; box-shadow: none; }

/* buttons */
.btn {
  font-family: var(--font); font-weight: 600; font-size: 14px;
  border-radius: 8px; padding: 11px 18px; cursor: pointer;
  border: 1px solid transparent; transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
}
.btn.ghost { background: var(--surface); color: var(--ink); border-color: var(--border-strong); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn.dl {
  background: var(--accent); color: #fff; box-shadow: var(--shadow-sm);
}
.btn.dl:hover { background: var(--accent-lo); }

/* ---- preview side ---- */
.previewpane { padding: 30px clamp(20px, 4vw, 40px) 60px; position: sticky; top: 0; }
@media (max-width: 900px) { .previewpane { position: static; } }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; align-items: center; }
.hint { font-size: 12px; color: var(--ink-muted); }

/* ── the invoice paper (also the print target) — neutral, client-appropriate,
     harmonizes with the light UI. This is what a client actually receives. ── */
.paper {
  background: #ffffff; color: #1f2329;
  border-radius: 12px; overflow: hidden;
  box-shadow: var(--shadow-md);
  min-height: 600px;
  border: 1px solid var(--border);
}
.paper .ph {
  background: #f2f3f7; color: #1f2329;
  padding: 26px 30px 22px; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
}
.paper .ph .who { max-width: 24em; }
.paper .ph .biz { font-weight: 700; font-size: 20px; letter-spacing: -.01em; color: #1a1d23; }
.paper .ph .small { font-size: 13px; color: #6b7280; line-height: 1.5; margin-top: 5px; white-space: pre-line; }
.paper .ph .meta { text-align: right; font-size: 13px; }
.paper .ph .meta .lab { font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.paper .ph .meta .big { font-weight: 700; font-size: 24px; color: #1a1d23; line-height: 1; letter-spacing: -.01em; margin-bottom: 8px; }
.paper .ph .meta .mv { color: #3a3f47; margin-bottom: 6px; }
.paper .pb { padding: 24px 30px 30px; }
.paper .billto { margin-bottom: 18px; }
.paper .billto .lab { font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 5px; }
.paper .billto .nm { font-weight: 700; font-size: 16px; }
.paper .billto .small { font-size: 13px; color: #5a5f68; white-space: pre-line; margin-top: 3px; }

.paper table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin-top: 4px; }
.paper th {
  font-family: var(--font-mono); font-size: 9px; letter-spacing: .08em; text-transform: uppercase;
  text-align: left; color: var(--ink-faint); border-bottom: 1.5px solid #1f2329; padding: 0 8px 9px;
}
.paper td { padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.paper th.r, .paper td.r { text-align: right; }
.paper tfoot td { border: 0; padding-top: 16px; }
.paper tfoot .tl { font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; text-align: right; color: #1f2329; font-weight: 700; }
.paper tfoot .tv { font-weight: 700; font-size: 24px; text-align: right; color: var(--accent-lo); }

.paper .pay { margin-top: 24px; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.paper .pay .blk { max-width: 24em; }
.paper .pay .lab { font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 5px; }
.paper .pay .v { font-size: 13.5px; color: #3a3f47; white-space: pre-line; line-height: 1.5; }
.paper .credit { margin-top: 30px; padding-top: 14px; border-top: 1px solid var(--border); font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: .01em; }
.paper .credit b { font-weight: 700; color: var(--ink-muted); }

/* footer */
.pgfoot {
  max-width: 1400px; margin: 8px auto 40px; padding: 24px clamp(20px, 4vw, 56px) 0;
  font-size: 12px; line-height: 1.7; color: var(--ink-faint);
  text-align: center; border-top: 1px solid var(--border);
}
.pgfoot a { color: var(--ink-muted); text-decoration: none; border-bottom: 1px solid var(--border-strong); }
.pgfoot a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* print: only the paper, full bleed */
@media print {
  .ihead-wrap, .form, .actions, .pgfoot { display: none !important; }
  body { background: #fff; }
  .gen { display: block; border-top: 0; }
  .previewpane { padding: 0; position: static; }
  /* margin:0 on the page makes the browser drop its date/title/url/page-number chrome; */
  /* whitespace is added back as margin on the invoice itself */
  @page { margin: 0; }
  .paper { box-shadow: none; min-height: auto; margin: 12mm; border-radius: 0; border: 0; }
}

@media (max-width: 600px) {
  .ihead-wrap { padding-top: 24px; }
}