/* ==========================================================================
   Tool Đọc Bill & Xuất Excel - CSS Stylesheet
   Thiết kế giao diện hiện đại, chuyên nghiệp theo phong cách FinTech
   ========================================================================== */

:root {
  --primary: #1e3a8a;
  --primary-light: #3b82f6;
  --primary-dark: #172554;
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  
  --success: #059669;
  --success-light: #10b981;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  
  --warning: #d97706;
  --warning-bg: #fffbeb;
  
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
}

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

body {
  font-family: var(--font-sans);
  background-color: #f8fafc;
  color: var(--slate-800);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* Header */
.app-header {
  background: #ffffff;
  border-bottom: 1px solid var(--slate-200);
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(30, 58, 138, 0.25);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--slate-500);
  font-weight: 500;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--slate-100);
  border: 1px solid var(--slate-200);
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--slate-700);
  font-family: var(--font-mono);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Layout */
.main-content {
  max-width: 1400px;
  margin: 1.5rem auto 3rem;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Card */
.card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slate-900);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Radio Group for Engines */
.engine-selector {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--slate-50);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
}

.engine-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate-600);
}

.radio-group {
  display: flex;
  gap: 0.75rem;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  position: relative;
  font-size: 0.82rem;
}

.radio-option input[type="radio"] {
  accent-color: var(--primary);
  cursor: pointer;
}

.radio-text strong {
  display: block;
  font-size: 0.82rem;
  color: var(--slate-800);
}

.radio-text small {
  display: block;
  font-size: 0.7rem;
  color: var(--slate-500);
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--slate-300);
  border-radius: var(--radius-lg);
  background: #fafafc;
  padding: 2.75rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  position: relative;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary-light);
  background: var(--primary-50);
  transform: translateY(-1px);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.dropzone-icon {
  width: 70px;
  height: 70px;
  background: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  color: var(--primary);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease;
}

.dropzone:hover .dropzone-icon {
  transform: scale(1.08);
}

.dropzone-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.4rem;
}

.dropzone-link {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.dropzone-hint {
  font-size: 0.85rem;
  color: var(--slate-500);
  margin-bottom: 1.25rem;
}

.dropzone-features {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.feat-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 9999px;
  color: var(--slate-600);
}

/* Progress bar */
.progress-container {
  margin-top: 1.25rem;
  padding: 1rem;
  background: var(--slate-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.progress-text {
  color: var(--slate-700);
}

.progress-percent {
  color: var(--primary);
  font-family: var(--font-mono);
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: var(--slate-200);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 9999px;
  transition: width 0.3s ease;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.stat-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon-blue { background: var(--primary-50); color: var(--primary); }
.stat-icon-green { background: var(--success-bg); color: var(--success); }
.stat-icon-purple { background: #f5f3ff; color: #7c3aed; }
.stat-icon-amber { background: var(--warning-bg); color: var(--warning); }

.stat-content {
  overflow: hidden;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--slate-900);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stat-value.text-green {
  color: var(--success);
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--slate-500);
  margin-top: 0.1rem;
}

/* Results section */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.results-subtitle {
  font-size: 0.8rem;
  color: var(--slate-500);
  margin-top: 0.2rem;
}

.table-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  font-family: var(--font-sans);
}

.btn-success {
  background: var(--success);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(5, 150, 105, 0.3);
}

.btn-success:hover {
  background: #047857;
  transform: translateY(-1px);
}

.btn-secondary {
  background: #ffffff;
  border-color: var(--slate-300);
  color: var(--slate-700);
}

.btn-secondary:hover {
  background: var(--slate-100);
  color: var(--slate-900);
}

.btn-outline {
  background: var(--slate-50);
  border-color: var(--slate-300);
  color: var(--slate-700);
}

.btn-outline:hover {
  background: var(--slate-100);
}

/* Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: #ffffff;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.data-table thead th {
  background: var(--primary-dark);
  color: #ffffff;
  padding: 0.75rem 0.85rem;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 2px solid var(--primary);
  white-space: nowrap;
}

.data-table tbody tr {
  border-bottom: 1px solid var(--slate-200);
  transition: background-color 0.1s ease;
}

.data-table tbody tr:hover {
  background-color: var(--primary-50);
}

.data-table td {
  padding: 0.65rem 0.85rem;
  vertical-align: middle;
  color: var(--slate-800);
}

.data-table td[contenteditable="true"] {
  outline: none;
  cursor: text;
  border-radius: 4px;
  padding: 0.35rem 0.5rem;
  transition: all 0.15s ease;
}

.data-table td[contenteditable="true"]:focus {
  background-color: #ffffff;
  box-shadow: 0 0 0 2px var(--primary-light);
}

.text-right { text-align: right; }
.text-center { text-align: center; }
.font-bold { font-weight: 700; }

.amt-cell {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--success);
}

.code-cell {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--slate-700);
}

/* Thumbnail preview */
.thumb-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  display: block;
  border-radius: 6px;
  overflow: hidden;
  width: 48px;
  height: 48px;
  border: 1px solid var(--slate-300);
  transition: transform 0.15s ease;
}

.thumb-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 700;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid #fde68a;
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
}

/* Actions in row */
.row-delete-btn {
  background: none;
  border: none;
  color: var(--slate-400);
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 4px;
  transition: color 0.15s ease, background 0.15s ease;
}

.row-delete-btn:hover {
  color: var(--danger);
  background: var(--danger-bg);
}

/* Empty state */
.empty-state {
  padding: 4rem 1rem;
  text-align: center;
}

.empty-icon {
  font-size: 2.8rem;
  margin-bottom: 0.75rem;
}

.empty-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--slate-700);
}

.empty-subtext {
  font-size: 0.85rem;
  color: var(--slate-400);
  margin-top: 0.25rem;
}

/* Footer total row */
.total-row td {
  background: #e0e7ff;
  border-top: 2px solid var(--primary);
  border-bottom: 3px double var(--primary);
  padding: 0.85rem;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--primary-dark);
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-container {
  background: #ffffff;
  border-radius: var(--radius-xl);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.modal-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slate-900);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--slate-400);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--slate-900);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .modal-body {
    grid-template-columns: 1fr;
  }
}

.modal-image-wrapper {
  background: var(--slate-100);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 550px;
  overflow: auto;
}

.modal-img {
  max-width: 100%;
  max-height: 520px;
  object-fit: contain;
  border-radius: 4px;
}

.modal-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.detail-row {
  display: flex;
  flex-direction: column;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--slate-100);
}

.detail-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--slate-500);
  letter-spacing: 0.03em;
}

.detail-val {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--slate-900);
  margin-top: 0.15rem;
  word-break: break-word;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  z-index: 120;
}

.toast {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: slideIn 0.2s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-success { border-left: 4px solid var(--success); color: var(--slate-800); }
.toast-error { border-left: 4px solid var(--danger); color: var(--danger); }
.toast-info { border-left: 4px solid var(--primary-light); color: var(--slate-800); }