/* Invoice PDF Generator — clean UI */
:root {
  --bg:          #0c0c10;
  --bg-card:     #14141c;
  --bg-surface:  #1a1a24;
  --bg-input:    #111118;
  --primary:     #3b82f6;
  --primary-dk:  #1d4ed8;
  --text:        #e4e4ef;
  --text-muted:  #8888aa;
  --text-faint:  #44445a;
  --border:      #22222e;
  --border-focus:#3b82f6;
  --radius-sm:   6px;
  --radius:      10px;
  --radius-lg:   14px;
  --trans:       .15s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── page wrap ── */
.page-wrap {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1.25rem 5rem;
}

/* ── breadcrumb ── */
.breadcrumb {
  font-size: .78rem; color: var(--text-faint);
  padding: 1rem 0 0; display: flex; gap: .4rem; align-items: center; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-faint); transition: color var(--trans); }
.breadcrumb a:hover { color: var(--text-muted); text-decoration: none; }

/* ── page header ── */
.tool-header {
  padding: 1.5rem 0 1.25rem;
  display: flex; align-items: center; gap: 1rem;
}
.tool-icon {
  width: 48px; height: 48px; border-radius: 11px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dk));
  display: flex; align-items: center; justify-content: center;
}
.tool-icon svg { width: 24px; height: 24px; stroke: #fff; fill: none; }
.tool-header h1 { font-size: 1.4rem; font-weight: 700; letter-spacing: -.02em; margin-bottom: .2rem; }
.tool-header p  { color: var(--text-muted); font-size: .88rem; line-height: 1.5; }

/* ── two-column layout ── */
.tool-main {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 960px) { .tool-main { grid-template-columns: 1fr; } }

/* ═══════════════════════════════════════════
   LEFT PANEL
═══════════════════════════════════════════ */
.form-panel { display: flex; flex-direction: column; gap: .75rem; }

/* ── top action bar ── */
.action-bar {
  display: flex; gap: .6rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .8rem 1rem;
}
.action-bar .btn-sm {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .5rem .6rem; border-radius: var(--radius-sm);
  font-size: .8rem; font-weight: 600; cursor: pointer; font-family: inherit;
  border: 1px solid var(--border); background: var(--bg-surface);
  color: var(--text-muted); transition: all var(--trans);
}
.action-bar .btn-sm svg { width: 14px; height: 14px; stroke: currentColor; fill: none; flex-shrink: 0; }
.action-bar .btn-sm:hover { border-color: var(--primary); color: var(--text); background: rgba(59,130,246,.06); }

/* ── accordion section ── */
.acc-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.acc-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 1.1rem; cursor: pointer;
  user-select: none; transition: background var(--trans);
}
.acc-head:hover { background: rgba(255,255,255,.025); }

.acc-head-left { display: flex; align-items: center; gap: .65rem; }
.acc-head-icon {
  width: 30px; height: 30px; border-radius: 7px;
  background: rgba(59,130,246,.12); border: 1px solid rgba(59,130,246,.18);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.acc-head-icon svg { width: 15px; height: 15px; stroke: var(--primary); fill: none; }

.acc-head-title { font-size: .88rem; font-weight: 600; color: var(--text); }
.acc-head-sub   { font-size: .72rem; color: var(--text-faint); margin-top: .1rem; }

.acc-chevron {
  width: 18px; height: 18px; color: var(--text-faint);
  transition: transform .2s; flex-shrink: 0;
}
.acc-chevron svg { width: 18px; height: 18px; stroke: currentColor; fill: none; }
.acc-section.open .acc-chevron { transform: rotate(180deg); }

.acc-body { display: none; padding: 0 1.1rem 1.1rem; }
.acc-section.open .acc-body { display: block; }

/* ── form fields ── */
.field { margin-bottom: .7rem; }
.field:last-child { margin-bottom: 0; }
.field label {
  display: block; font-size: .73rem; font-weight: 500;
  color: var(--text-muted); margin-bottom: .28rem;
  letter-spacing: .01em;
}
.field label .opt { color: var(--text-faint); font-weight: 400; }

.fi {
  width: 100%; background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font-size: .875rem;
  padding: .55rem .75rem; outline: none; transition: border-color var(--trans);
  font-family: inherit;
}
.fi:focus { border-color: var(--border-focus); box-shadow: 0 0 0 2px rgba(59,130,246,.12); }
.fi::placeholder { color: var(--text-faint); }
textarea.fi { resize: vertical; min-height: 56px; line-height: 1.5; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .6rem; }

/* ── style chips ── */
.chip-group { display: flex; gap: .4rem; flex-wrap: wrap; }
.chip {
  padding: .3rem .7rem; background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: 5px; color: var(--text-muted); font-size: .75rem; font-weight: 500;
  cursor: pointer; transition: all var(--trans); white-space: nowrap;
}
.chip:hover { border-color: var(--primary); color: var(--text); }
.chip.on { background: rgba(59,130,246,.15); border-color: var(--primary); color: var(--primary); font-weight: 600; }

/* ── color swatches ── */
.swatch-row { display: flex; gap: .45rem; flex-wrap: wrap; }
.swatch {
  width: 24px; height: 24px; border-radius: 50%; cursor: pointer;
  border: 2px solid transparent; transition: transform var(--trans), border-color var(--trans);
}
.swatch:hover { transform: scale(1.18); }
.swatch.on { border-color: #fff; }

/* ── size cards ── */
.size-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; }
.size-card {
  display: flex; flex-direction: column; align-items: center; gap: .4rem;
  padding: .65rem .5rem; background: var(--bg-surface); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); cursor: pointer; transition: all var(--trans);
}
.size-card:hover { border-color: var(--primary); }
.size-card.on { border-color: var(--primary); background: rgba(59,130,246,.08); }
.size-card-icon {
  width: 28px; border-radius: 2px; background: var(--bg-card);
  border: 1px solid var(--border); position: relative;
}
.size-card.on .size-card-icon { border-color: var(--primary); background: rgba(59,130,246,.1); }
.size-card-label { font-size: .72rem; font-weight: 600; color: var(--text-muted); }
.size-card.on .size-card-label { color: var(--primary); }
.size-card-dim   { font-size: .62rem; color: var(--text-faint); }

/* ── line items ── */
.items-hdr {
  display: grid;
  grid-template-columns: 1fr 52px 78px 72px 28px;
  gap: .4rem; padding: 0 0 .45rem;
  font-size: .66rem; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; color: var(--text-faint);
}
.items-hdr span { padding: 0 .3rem; }
.items-hdr .r { text-align: right; }
.items-hdr .c { text-align: center; }

.item-row {
  display: grid;
  grid-template-columns: 1fr 52px 78px 72px 28px;
  gap: .4rem; align-items: center; margin-bottom: .4rem;
}
.item-row .fi { padding: .42rem .55rem; font-size: .82rem; }
.item-row .fi.c { text-align: center; }
.item-row .fi.r { text-align: right; }
.item-amt { font-size: .82rem; color: var(--text-muted); text-align: right; padding-right: .2rem; font-variant-numeric: tabular-nums; white-space: nowrap; }

.del-btn {
  width: 28px; height: 28px; border-radius: var(--radius-sm); cursor: pointer;
  background: transparent; border: 1px solid var(--border); color: var(--text-faint);
  display: flex; align-items: center; justify-content: center; transition: all var(--trans);
  flex-shrink: 0;
}
.del-btn svg { width: 13px; height: 13px; stroke: currentColor; fill: none; }
.del-btn:hover { background: rgba(239,68,68,.1); border-color: rgba(239,68,68,.4); color: #f87171; }

.add-row-btn {
  display: flex; align-items: center; gap: .4rem; width: 100%;
  padding: .48rem .6rem; background: transparent;
  border: 1px dashed var(--border); border-radius: var(--radius-sm);
  color: var(--text-faint); font-size: .78rem; cursor: pointer;
  transition: all var(--trans); font-family: inherit; margin-top: .2rem;
}
.add-row-btn svg { width: 14px; height: 14px; stroke: currentColor; fill: none; }
.add-row-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ── totals ── */
.totals-box {
  margin-top: .8rem; background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: .75rem .9rem;
  display: flex; flex-direction: column; gap: .35rem;
}
.tot-row { display: flex; justify-content: space-between; font-size: .82rem; color: var(--text-muted); }
.tot-row .v { font-variant-numeric: tabular-nums; }
.tot-row.grand {
  font-size: .95rem; font-weight: 700; color: var(--text);
  border-top: 1px solid var(--border); margin-top: .2rem; padding-top: .45rem;
}

/* ── download buttons ── */
.dl-stack { display: flex; flex-direction: column; gap: .5rem; margin-top: .1rem; }

.btn-dl {
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  width: 100%; padding: .72rem; border: none; border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 700; cursor: pointer; font-family: inherit;
  transition: opacity var(--trans), transform var(--trans);
}
.btn-dl:hover { opacity: .88; transform: translateY(-1px); }
.btn-dl svg { width: 17px; height: 17px; stroke: currentColor; fill: none; flex-shrink: 0; }

.btn-dl-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dk));
  color: #fff;
}
.btn-dl-ghost {
  background: var(--bg-surface); border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-dl-ghost:hover { border-color: var(--primary); color: var(--text); }

/* ═══════════════════════════════════════════
   RIGHT PANEL — sticky preview
═══════════════════════════════════════════ */
.preview-panel {
  position: sticky;
  top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
@media (max-width: 960px) { .preview-panel { position: static; } }

.preview-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
}

.preview-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 1rem; border-bottom: 1px solid var(--border);
}
.preview-topbar-label { font-size: .78rem; font-weight: 600; color: var(--text-muted); }
.preview-size-badge {
  font-size: .68rem; font-weight: 600; color: var(--primary);
  background: rgba(59,130,246,.1); border: 1px solid rgba(59,130,246,.2);
  padding: 2px 9px; border-radius: 999px;
}

.preview-bg {
  background: repeating-conic-gradient(#161620 0% 25%, #111118 0% 50%) 0 0 / 20px 20px;
  padding: 1.25rem; display: flex; justify-content: center; align-items: flex-start;
  min-height: 420px;
}

#previewCanvas {
  max-width: 100%; display: block;
  border-radius: 3px; box-shadow: 0 8px 48px rgba(0,0,0,.7);
}

/* ── sections below tool ── */
.sections { margin-top: 2.5rem; display: flex; flex-direction: column; gap: 2rem; }
.section-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; }

.prose { color: var(--text-muted); line-height: 1.75; font-size: .93rem; }
.prose p { margin-bottom: .75rem; }
.prose strong { color: var(--text); }

.steps { display: flex; flex-direction: column; gap: .7rem; }
.step-item { display: flex; gap: .9rem; align-items: flex-start; }
.step-num {
  width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dk));
  display: flex; align-items: center; justify-content: center;
  font-size: .72rem; font-weight: 700; color: #fff;
}
.step-text { color: var(--text-muted); font-size: .88rem; padding-top: .3rem; line-height: 1.55; }

.faq-list { display: flex; flex-direction: column; gap: .55rem; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: .85rem 1rem; cursor: pointer; font-weight: 600; font-size: .88rem; gap: .5rem;
}
.faq-q svg { width: 15px; height: 15px; stroke: var(--text-muted); flex-shrink: 0; transition: transform .2s; }
.faq-item.open .faq-q svg { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 1rem .9rem; color: var(--text-muted); font-size: .86rem; line-height: 1.65; }
.faq-item.open .faq-a { display: block; }

.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(175px, 1fr)); gap: .7rem; }
.related-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
  padding: .8rem .95rem; text-decoration: none; color: var(--text);
  transition: border-color var(--trans); display: block;
}
.related-card:hover { border-color: var(--primary); text-decoration: none; }
.related-card-title { font-size: .85rem; font-weight: 600; margin-bottom: .2rem; }
.related-card-desc  { font-size: .76rem; color: var(--text-muted); line-height: 1.4; }

.ad-wrap {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  min-height: 90px; display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: .78rem;
}

/* ── logo upload ── */
.logo-upload-row { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }

.logo-upload-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .5rem .9rem; background: var(--bg-surface);
  border: 1px dashed var(--border); border-radius: var(--radius-sm);
  color: var(--text-muted); font-size: .8rem; font-weight: 600;
  cursor: pointer; transition: all var(--trans); font-family: inherit;
}
.logo-upload-btn svg { width: 15px; height: 15px; stroke: currentColor; fill: none; flex-shrink: 0; }
.logo-upload-btn:hover { border-color: var(--primary); color: var(--primary); }

.logo-preview-wrap {
  display: flex; align-items: center; gap: .55rem;
  padding: .45rem .75rem; background: rgba(59,130,246,.06);
  border: 1px solid rgba(59,130,246,.2); border-radius: var(--radius-sm);
}
.logo-preview-name {
  display: flex; align-items: center; gap: .35rem;
  font-size: .8rem; color: var(--primary); font-weight: 600;
}
.logo-remove-btn {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .25rem .55rem; background: rgba(239,68,68,.08);
  border: 1px solid rgba(239,68,68,.2); border-radius: 5px;
  color: #f87171; font-size: .73rem; font-weight: 600; cursor: pointer;
  transition: all var(--trans); font-family: inherit;
}
.logo-remove-btn svg { width: 12px; height: 12px; stroke: currentColor; fill: none; }
.logo-remove-btn:hover { background: rgba(239,68,68,.18); border-color: rgba(239,68,68,.5); }

/* ── section divider ── */
.sec-divider {
  border: none; border-top: 1px solid var(--border); margin: .6rem 0;
}

/* ── toast ── */
#toast {
  position: fixed; bottom: 1.5rem; left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: #1e1e30; border: 1px solid var(--border);
  color: var(--text); padding: .55rem 1.2rem;
  border-radius: 999px; font-size: .82rem; opacity: 0; pointer-events: none;
  transition: opacity .22s, transform .22s; z-index: 999; white-space: nowrap;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }