/* =====================================================
   批次收據生成器 — Stylesheet
   ===================================================== */

/* ── Reset & Variables ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:     #4F46E5;
  --primary-hover: #4338CA;
  --success:     #10B981;
  --success-hover: #059669;
  --danger:      #EF4444;
  --warning:     #F59E0B;
  --info:        #3B82F6;

  --bg:          #F1F5F9;
  --surface:     #FFFFFF;
  --border:      #E2E8F0;
  --text:        #1E293B;
  --text-muted:  #64748B;
  --text-light:  #94A3B8;

  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.06);
  --shadow-lg:   0 8px 24px rgba(0,0,0,.12);  --font: 'PMingLiU', 'MingLiU', '新細明體', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Header ── */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.header-badge {
  font-size: 12px;
  color: var(--success);
  background: #D1FAE5;
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}

/* ── Container ── */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 28px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Status Bar ── */
.status-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: all .3s;
}

.status-loading  { background: #EFF6FF; color: var(--info); border: 1px solid #BFDBFE; }
.status-ready    { background: #ECFDF5; color: var(--success); border: 1px solid #A7F3D0; }
.status-error    { background: #FEF2F2; color: var(--danger); border: 1px solid #FECACA; }

.status-icon {
  font-size: 18px;
  animation: spin 1.5s linear infinite;
  display: inline-block;
}

.status-ready .status-icon,
.status-error .status-icon { animation: none; }

@keyframes spin { to { transform: rotate(360deg); } }

.progress-bar-wrap {
  flex: 1;
  height: 5px;
  background: rgba(0,0,0,.08);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar-inner {
  height: 100%;
  background: var(--info);
  border-radius: 999px;
  width: 0%;
  transition: width .4s ease;
}

.status-ready .progress-bar-inner { background: var(--success); width: 100%; }


/* ── Card ── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow .2s;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: #FAFAFA;
}

.card-header h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.card-body { padding: 24px; }

/* ── Step Badge ── */
.step-badge {
  width: 28px;
  height: 28px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.step-badge.info { background: var(--text-muted); }

/* ── Org Name Row ── */
.org-name-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  padding: 12px 16px;
  background: #F8FAFC;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.org-name-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.org-name-input {
  flex: 1;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--text);
  background: white;
  outline: none;
  transition: border-color .2s;
}

.org-name-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.1);
}

.org-name-input::placeholder { color: var(--text-light); font-size: 13px; }

/* ── Filename Pattern ── */
.filename-pattern-row { flex-wrap: wrap; align-items: flex-start; padding-top: 10px; padding-bottom: 10px; }

.filename-pattern-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filename-preview {
  font-size: 12px;
  color: var(--text-muted);
  font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
  padding: 3px 8px;
  background: #F1F5F9;
  border-radius: 4px;
  min-height: 20px;
  transition: opacity .2s;
}

.filename-preview::before { content: '預覽：'; color: var(--text-light); }

.filename-tokens {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 0 14px 0;
  margin-top: -4px;
}

.token-label {
  font-size: 12px;
  color: var(--text-light);
  flex-shrink: 0;
}

.token-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  background: #EEF2FF;
  color: var(--primary);
  border: 1px solid #C7D2FE;
  border-radius: 999px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.token-chip:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ── Drop Zone ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 36px 24px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--primary);
  background: #EEF2FF;
  color: var(--primary);
}

.drop-zone p { font-size: 14px; }
.drop-zone .hint { font-size: 12px; color: var(--text-light); margin-top: 4px; }

/* ── Divider ── */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--text-light);
  font-size: 13px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── CSV Textarea ── */
.csv-textarea {
  width: 100%;
  min-height: 160px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #FAFAFA;
  font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  resize: vertical;
  transition: border-color .2s;
  outline: none;
}

.csv-textarea:focus { border-color: var(--primary); background: white; box-shadow: 0 0 0 3px rgba(79,70,229,.1); }

/* ── Input Actions ── */
.input-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.input-actions .btn-primary { margin-left: auto; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .15s;
  white-space: nowrap;
  text-decoration: none;
}

.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn-primary  { background: var(--primary); color: white; }
.btn-primary:not(:disabled):hover  { background: var(--primary-hover); }

.btn-success  { background: var(--success); color: white; }
.btn-success:not(:disabled):hover  { background: var(--success-hover); }

.btn-outline  { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:not(:disabled):hover  { background: var(--primary); color: white; }

.btn-ghost    { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:not(:disabled):hover    { background: var(--bg); color: var(--text); }

.btn-sm { padding: 6px 12px; font-size: 13px; }

/* ── Preview Table ── */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

#preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

#preview-table th {
  background: #F8FAFC;
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

#preview-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#preview-table tbody tr:last-child td { border-bottom: none; }
#preview-table tbody tr:hover td { background: #F8FAFC; }

.badge-count {
  margin-left: auto;
  background: #EEF2FF;
  color: var(--primary);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 13px;
  font-weight: 600;
}

/* ── Validation Errors ── */
.error-panel {
  margin-top: 16px;
  padding: 14px 16px;
  background: #FEF2F2;
  border: 1px solid #FECACA;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--danger);
  line-height: 1.8;
}

/* ── Preview Actions ── */
.preview-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

/* ── Generation Progress ── */
.center-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 40px 24px;
}

.gen-progress-wrap {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.gen-progress-outer {
  height: 10px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.gen-progress-inner {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--success));
  border-radius: 999px;
  width: 0%;
  transition: width .3s ease;
}

.gen-progress-text {
  text-align: right;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.gen-status-text {
  font-size: 14px;
  color: var(--text-muted);
}

/* ── Collapsible ── */
.collapsible-trigger {
  cursor: pointer;
  user-select: none;
}

.collapsible-trigger:hover { background: #F1F5F9; }

.chevron {
  margin-left: auto;
  font-size: 16px;
  transition: transform .2s;
  color: var(--text-muted);
}

.collapsible.open .chevron { transform: rotate(180deg); }
.collapsible-body { display: none; }
.collapsible.open .collapsible-body { display: block; }

/* ── Guide Table ── */
.guide-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 14px; }

.guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.guide-table th {
  background: #F8FAFC;
  padding: 9px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--border);
}

.guide-table td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
}

.guide-table tbody tr:last-child td { border-bottom: none; }
.guide-table code { background: #F1F5F9; padding: 2px 6px; border-radius: 4px; font-size: 12.5px; }

.guide-tip {
  margin-top: 16px;
  padding: 12px 16px;
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: #92400E;
}

/* ── Font Fallback Panel ── */
.font-fallback-panel {
  background: var(--surface);
  border: 1px solid #FDE68A;
  border-left: 4px solid var(--warning);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.fallback-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.fallback-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }

.fallback-header strong { font-size: 14.5px; color: var(--text); display: block; margin-bottom: 2px; }
.fallback-header p      { font-size: 13px; color: var(--text-muted); margin: 0; }

.fallback-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fallback-option {
  display: block;
  background: #FFFBEB;
  border: 1.5px solid #FDE68A;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  transition: all .15s;
  text-align: left;
  width: 100%;
  font-family: inherit;
  color: var(--text);
  text-decoration: none;
}

.fallback-option:hover {
  border-color: var(--warning);
  background: #FEF3C7;
  box-shadow: 0 0 0 3px rgba(245,158,11,.1);
}

.fallback-option-btn { /* reset button styles */ }

.fallback-option-content {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.fallback-option-icon { font-size: 20px; flex-shrink: 0; margin-top: 1px; }
.fallback-option-content strong { font-size: 13.5px; display: block; margin-bottom: 2px; font-weight: 600; }
.fallback-option-content small  { font-size: 12px; color: var(--text-muted); display: block; line-height: 1.5; }
.fallback-option-content small a { color: var(--primary); }

/* ── Toast ── */
#toast-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
}

.toast {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  min-width: 260px;
  max-width: 380px;
  animation: slideUp .25s ease;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.toast-success { background: #ECFDF5; color: #065F46; border: 1px solid #A7F3D0; }
.toast-error   { background: #FEF2F2; color: #991B1B; border: 1px solid #FECACA; }
.toast-info    { background: #EFF6FF; color: #1E40AF; border: 1px solid #BFDBFE; }

@keyframes slideUp {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

/* ── Utilities ── */
.hidden { display: none !important; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .header-inner { padding: 12px 16px; }
  .container { padding: 16px 12px 48px; }
  .card-body { padding: 16px; }
  .input-actions { flex-direction: column; align-items: stretch; }
  .input-actions .btn-primary { margin-left: 0; }
  .preview-actions { flex-direction: column; }
  #toast-container { left: 16px; right: 16px; bottom: 20px; }
  .toast { min-width: unset; }
}