/* ==========================================================================
   支付證明單 — 冷調商務文件風格（與站台主視覺獨立）
   ========================================================================== */

.doc-section {
  --doc-bg: #F4F6FA;
  --doc-ink: #1E2A44;
  --doc-ink-soft: #5B6B8C;
  --doc-primary: #2B5CE6;
  --doc-primary-soft: #EAF0FE;
  --doc-card: #FFFFFF;
  --doc-border: #C3CCE0;
  --doc-border-strong: #1E2A44;
  --doc-header-bg: #EEF1F8;

  background: var(--doc-bg);
  padding: 40px 0 64px;
}

.doc-toolbar {
  max-width: 210mm;
  margin: 0 auto 18px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.doc-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.15s ease, background 0.15s ease;
}
.doc-btn:active { opacity: 0.85; }
.doc-btn--primary {
  background: var(--doc-primary);
  color: #fff;
}
.doc-btn--primary:hover { background: #2249BD; }
.doc-btn--ghost {
  background: #fff;
  border-color: var(--doc-border);
  color: var(--doc-ink);
}
.doc-btn--ghost:hover { background: var(--doc-header-bg); }

/* ---------- The A4 "paper" ---------- */
.doc-page {
  width: 210mm;
  max-width: 100%;
  margin: 0 auto;
  background: var(--doc-card);
  color: var(--doc-ink);
  padding: 16mm 16mm 14mm;
  box-shadow: 0 2px 14px rgba(30, 42, 68, 0.10);
  border-radius: 6px;
  font-size: 0.95rem;
  line-height: 1.8;
}

.doc-header {
  text-align: center;
  margin-bottom: 10mm;
}
.doc-header__org {
  font-size: 0.86rem;
  color: var(--doc-ink-soft);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.doc-header__title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.3em;
  color: var(--doc-ink);
}

/* ---------- Field table ---------- */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 8mm;
}
.doc-table th, .doc-table td {
  border: 1px solid var(--doc-border);
  padding: 9px 12px;
  vertical-align: middle;
  text-align: left;
}
.doc-table th {
  background: var(--doc-header-bg);
  width: 132px;
  font-weight: 700;
  color: var(--doc-ink);
  white-space: nowrap;
  font-size: 0.88rem;
}
.doc-table td { background: #fff; }
.doc-table tr.doc-row--tall td { vertical-align: top; }

.doc-field-input, .doc-field-textarea {
  width: 100%;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--doc-ink);
  padding: 3px 2px;
  outline: none;
  border-radius: 3px;
}
.doc-field-input:focus, .doc-field-textarea:focus { background: var(--doc-primary-soft); }
.doc-field-textarea {
  resize: vertical;
  min-height: 76px;
  line-height: 1.85;
}
.doc-field-textarea::placeholder, .doc-field-input::placeholder { color: #A6AEC4; }

/* ---------- Date row ---------- */
.doc-date-group {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}
.doc-date-group input {
  width: 64px;
  text-align: center;
  border: none;
  border-bottom: 1px solid var(--doc-border-strong);
  background: transparent;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--doc-ink);
  padding: 2px 0;
  outline: none;
}
.doc-date-group input:focus { background: var(--doc-primary-soft); }
.doc-date-group span { color: var(--doc-ink-soft); font-size: 0.88rem; }

/* ---------- Amount row ---------- */
.doc-amount-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}
.doc-amount-label {
  font-size: 0.85rem;
  color: var(--doc-ink-soft);
  flex-shrink: 0;
}
.doc-amount-boxes {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
}
.doc-amount-box {
  min-width: 26px;
  height: 30px;
  padding: 0 3px;
  border: 1px solid var(--doc-border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--doc-ink);
  background: #fff;
}
.doc-amount-boxes.is-empty .doc-amount-box {
  color: #B7BFD4;
}
.doc-amount-small {
  display: flex;
  align-items: center;
  gap: 8px;
}
.doc-amount-small span {
  font-weight: 700;
  color: var(--doc-ink);
  font-size: 0.92rem;
}
.doc-amount-small input {
  width: 140px;
  border: none;
  border-bottom: 1px solid var(--doc-border-strong);
  background: transparent;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--doc-ink);
  padding: 3px 4px;
  outline: none;
}
.doc-amount-small input:focus { background: var(--doc-primary-soft); }

/* ---------- Reason checkboxes ---------- */
.doc-check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  align-items: center;
}
.doc-check-group label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.92rem;
  color: var(--doc-ink);
  cursor: pointer;
}
.doc-check-group input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--doc-primary);
  cursor: pointer;
}
.doc-check-other {
  flex: 1;
  min-width: 160px;
  border: none;
  border-bottom: 1px solid var(--doc-border-strong);
  background: transparent;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--doc-ink);
  padding: 3px 4px;
  outline: none;
}
.doc-check-other:focus { background: var(--doc-primary-soft); }
.doc-check-other:disabled { color: #C3CCE0; }

/* ---------- Note row ---------- */
.doc-note-text {
  font-size: 0.9rem;
  color: var(--doc-ink-soft);
  font-style: italic;
}

/* ---------- Calculator panel (top-of-page quick reference) ---------- */
.doc-calc-panel {
  width: 210mm;
  max-width: 100%;
  margin: 0 auto 20px;
  background: #fff;
  border: 1px solid var(--doc-border);
  border-left: 4px solid var(--doc-primary);
  border-radius: 8px;
  padding: 20px 22px;
  box-shadow: 0 2px 10px rgba(30, 42, 68, 0.08);
}
.doc-calc-title {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--doc-ink);
  margin-bottom: 14px;
}
.doc-calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px 18px;
  align-items: end;
}
.doc-calc-field label {
  display: block;
  font-size: 0.78rem;
  color: var(--doc-ink-soft);
  margin-bottom: 6px;
}
.doc-calc-field input, .doc-calc-field select {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--doc-border);
  border-radius: 6px;
  background: #fff;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--doc-ink);
  outline: none;
}
.doc-calc-field input:focus, .doc-calc-field select:focus {
  border-color: var(--doc-primary);
  box-shadow: 0 0 0 3px var(--doc-primary-soft);
}
.doc-calc-check {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.85rem;
  color: var(--doc-ink);
  padding-bottom: 9px;
}
.doc-calc-check input { width: 16px; height: 16px; accent-color: var(--doc-primary); }

.doc-calc-results {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--doc-border);
}
.doc-calc-result-item { font-size: 0.82rem; color: var(--doc-ink-soft); }
.doc-calc-result-item strong { display: block; font-size: 1.1rem; color: var(--doc-ink); margin-top: 3px; }
.doc-calc-result-item.total strong { color: var(--doc-primary); }
.doc-calc-note {
  font-size: 0.78rem;
  color: var(--doc-ink-soft);
  margin-top: 10px;
}
.doc-calc-actions {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------- Radio group (payment method etc.) ---------- */
.doc-radio-group {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}
.doc-radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--doc-ink);
  cursor: pointer;
}
.doc-radio-group input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--doc-primary);
  cursor: pointer;
}

/* ---------- Sub-grid (bank account details) ---------- */
.doc-subgrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 18px;
  margin-top: 12px;
  transition: opacity 0.15s ease;
}
.doc-subgrid.is-disabled { opacity: 0.4; }
.doc-subgrid label {
  font-size: 0.78rem;
  color: var(--doc-ink-soft);
  display: block;
  margin-bottom: 4px;
}

/* ---------- Computed / readonly field ---------- */
.doc-readonly-field {
  background: var(--doc-primary-soft) !important;
  font-weight: 700 !important;
  color: var(--doc-primary) !important;
  border-radius: 4px;
  padding: 3px 6px !important;
}

/* ---------- Quick-reference table ---------- */
.doc-ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin: 4px 0 2px;
}
.doc-ref-table th, .doc-ref-table td {
  border: 1px solid var(--doc-border);
  padding: 6px 8px;
  text-align: center;
}
.doc-ref-table th { background: var(--doc-header-bg); font-weight: 700; }
.doc-ref-note {
  font-size: 0.74rem;
  color: var(--doc-ink-soft);
  margin-top: 6px;
}

/* ---------- Signature block ---------- */
.doc-sign-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 14mm;
  padding-top: 4mm;
}
.doc-sign-col {
  flex: 1;
  text-align: center;
}
.doc-sign-line {
  height: 40px;
  border-bottom: 1px solid var(--doc-border-strong);
  margin-bottom: 8px;
}
.doc-sign-label {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--doc-ink);
  letter-spacing: 0.08em;
}

/* ---------- Print ---------- */
@media print {
  @page { size: A4; margin: 14mm; }

  body.doc-theme { background: #fff !important; }
  .doc-section { background: #fff; padding: 0; }
  .doc-toolbar, .no-print { display: none !important; }

  .doc-page {
    width: auto;
    margin: 0;
    padding: 0;
    box-shadow: none;
    border-radius: 0;
  }

  .doc-table th, .doc-ref-table th { background: #fff !important; }
  .doc-table th, .doc-table td,
  .doc-date-group input, .doc-amount-small input, .doc-check-other,
  .doc-amount-box, .doc-sign-line, .doc-ref-table th, .doc-ref-table td {
    border-color: #000 !important;
  }
  .doc-field-input:focus, .doc-field-textarea:focus,
  .doc-date-group input:focus, .doc-amount-small input:focus, .doc-check-other:focus {
    background: transparent !important;
  }
  .doc-readonly-field { background: #fff !important; border: 1px solid #000 !important; }
  .doc-subgrid.is-disabled { display: none; }

  /* 全面強制黑色文字，確保列印清晰 */
  .doc-page, .doc-page * { color: #000 !important; }
}