@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #141b4d;
  --primary-light: #1e2a6e;
  --primary-lighter: #2d3d8f;
  --primary-subtle: #e8e9f3;
  --primary-bg: #f4f4f9;
  --white: #ffffff;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-500: #adb5bd;
  --gray-700: #495057;
  --success: #198754;
  --warning: #fd7e14;
  --danger: #dc3545;
  --meta-color: #1877f2;
  --tiktok-color: #000000;
  --google-color: #4285f4;
  --shadow-sm: 0 1px 3px rgba(20, 27, 77, 0.08);
  --shadow-md: 0 4px 12px rgba(20, 27, 77, 0.12);
  --shadow-lg: 0 8px 30px rgba(20, 27, 77, 0.16);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  background-color: var(--white);
  font-family: 'Lexend', sans-serif;
  color: var(--primary);
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: inherit;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

.header {
  display: flex;
  align-items: center;
  border-bottom: 2px solid var(--primary-subtle);
  padding-bottom: 20px;
  margin-bottom: 30px;
}

.header-logo {
  height: 40px;
  margin-right: 20px;
  transition: var(--transition);
}

.header-logo:hover {
  transform: scale(1.05);
}

.header-text h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
}

.header-subtitle {
  margin: 5px 0 0;
  font-size: 14px;
  color: var(--gray-700);
}

.card {
  background-color: var(--white);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
  margin-bottom: 30px;
  transition: var(--transition);
  overflow: hidden;
}

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

.card-header {
  padding: 20px;
  border-bottom: 1px solid var(--gray-200);
}

.card-header h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  border-left: 3px solid var(--primary);
  padding-left: 10px;
}

.card-body {
  padding: 20px;
}

.form-row {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.form-row-compact {
  margin-bottom: 0;
}

.form-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

select, input[type=number], input[type=text] {
  padding: 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: 'Lexend', sans-serif;
  font-size: 14px;
  color: var(--primary);
  transition: var(--transition);
  outline: none;
  background-color: var(--white);
  appearance: none;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23141b4d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

select:focus, input[type=number]:focus, input[type=text]:focus {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.summary-panel {
  background-color: var(--primary-bg);
  border-left: 3px solid var(--primary);
  padding: 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  display: flex;
  gap: 30px;
  margin-top: 20px;
  animation: fadeIn 0.5s ease-out;
}

.summary-item {
  display: flex;
  flex-direction: column;
}

.summary-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}

.summary-label {
  font-size: 12px;
  color: var(--gray-700);
  margin-top: 4px;
}

.upload-zone {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-md);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.upload-zone:hover {
  border-color: var(--primary);
  background-color: var(--primary-subtle);
}

.upload-zone.drag-over {
  border-color: var(--primary);
  background-color: var(--primary-subtle);
  transform: scale(1.02);
}

.upload-icon {
  font-size: 40px;
  margin-bottom: 10px;
}

.upload-text {
  font-weight: 600;
  margin: 0 0 5px;
}

.upload-subtext {
  font-size: 12px;
  color: var(--gray-500);
  margin: 0;
}

.file-list {
  margin-top: 20px;
}

.file-item {
  display: flex;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  animation: fadeInUp 0.4s ease-out forwards;
}

.file-item-name {
  flex: 1;
  font-size: 14px;
  margin: 0 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  color: var(--white);
  text-transform: uppercase;
}

.badge-meta { background-color: var(--meta-color); }
.badge-tiktok { background-color: var(--tiktok-color); }
.badge-google { background-color: var(--google-color); }
.badge-unknown { background-color: var(--gray-500); }

.file-remove {
  background: none;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  font-size: 18px;
  margin-left: 15px;
  transition: var(--transition);
}

.file-remove:hover {
  color: var(--danger);
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  padding: 14px 32px;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-sm);
  border: none;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Lexend', sans-serif;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-block {
  width: 100%;
}

.btn-secondary {
  border: 1px solid var(--primary);
  color: var(--primary);
  background: transparent;
  padding: 8px 16px;
  font-weight: 500;
  font-size: 13px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Lexend', sans-serif;
}

.btn-secondary:hover {
  background-color: var(--primary-subtle);
}

.history-section {
  margin-top: 30px;
}

.history-group {
  margin-bottom: 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.history-group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background-color: var(--gray-100);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.history-group-header:hover {
  background-color: var(--gray-200);
}

.history-group-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.history-count {
  background-color: var(--primary-subtle);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
}

.history-chevron {
  transition: var(--transition);
}

.history-group.expanded .history-chevron {
  transform: rotate(180deg);
}

.history-group-content {
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.history-group.expanded .history-group-content {
  max-height: 1000px;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-top: 1px solid var(--gray-200);
  background-color: var(--white);
}

.history-item-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.history-item-date {
  font-weight: 500;
  font-size: 14px;
}

.history-item-period {
  font-size: 12px;
  color: var(--gray-700);
}

.history-item-actions {
  display: flex;
  gap: 10px;
}

.history-empty {
  color: var(--gray-500);
  font-style: italic;
  padding: 20px;
  text-align: center;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.success { background-color: var(--success); }
.status-dot.processing { background-color: var(--warning); animation: pulse 1.5s infinite; }

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--primary);
  color: var(--white);
  padding: 15px 25px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-weight: 500;
  z-index: 1000;
  animation: slideInRight 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast-success { background-color: var(--success); }
.toast-error { background-color: var(--danger); }
.toast-info { background-color: var(--primary); }

.file-icon {
  font-size: 20px;
  margin-right: 10px;
  flex-shrink: 0;
}

.file-name {
  flex: 1;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-right: 12px;
}

.file-rows {
  font-size: 12px;
  color: var(--gray-500);
  margin-left: 12px;
  white-space: nowrap;
}

.btn-small {
  padding: 5px 12px;
  font-size: 12px;
}

.btn-danger-text:hover {
  color: var(--danger);
  border-color: var(--danger);
  background-color: rgba(220, 53, 69, 0.05);
}

.history-center-name {
  font-weight: 600;
  flex: 1;
}

.history-date {
  font-size: 13px;
  color: var(--gray-700);
  min-width: 90px;
}

.history-period {
  font-size: 14px;
  font-weight: 500;
  min-width: 120px;
}

.history-amount {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  min-width: 80px;
}

.history-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--white);
  animation: spin 1s ease-in-out infinite;
  display: inline-block;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: 15px;
  }
  
  .summary-panel {
    flex-direction: column;
    gap: 15px;
  }
  
  .container {
    padding: 15px;
  }
  
  .history-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }
}