/* ==========================================
   CSS Variables & Design Tokens
   ========================================== */
:root {
  /* Color Palette */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);

  --color-bg-dark: #0f0f23;
  --color-bg-card: rgba(30, 30, 60, 0.6);
  --color-bg-input: rgba(20, 20, 40, 0.8);
  --color-border: rgba(102, 126, 234, 0.2);
  --color-border-focus: rgba(102, 126, 234, 0.6);

  --color-text-primary: #ffffff;
  --color-text-secondary: #a8b2d1;
  --color-text-muted: #6b7a99;

  --color-accent: #667eea;
  --color-accent-light: #8b9dff;

  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.1);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 400ms ease-in-out;
}

/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-dark);
  background-image:
    radial-gradient(circle at 20% 30%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(118, 75, 162, 0.15) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   Layout
   ========================================== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  animation: fadeInDown 0.6s ease-out;
}

.header h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
}

.logo {
  filter: drop-shadow(0 0 8px rgba(102, 126, 234, 0.4));
  animation: pulse 2s ease-in-out infinite;
}

.subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  font-weight: 300;
}

.main-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.footer {
  text-align: center;
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  border-top: 1px solid var(--color-border);
}

.footer a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.footer a:hover,
.footer a:focus-visible {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ==========================================
   Card Component
   ========================================== */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  animation: fadeInUp 0.6s ease-out;
}

.card:hover {
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-2px);
}

/* ==========================================
   Input Section
   ========================================== */
.input-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.input-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.icon {
  color: var(--color-accent);
}

.sta-textarea {
  width: 100%;
  min-height: 250px;
  padding: var(--spacing-md);
  background: var(--color-bg-input);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
  line-height: 1.5;
  resize: vertical;
  transition: all var(--transition-base);
}

.sta-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.sta-textarea::placeholder {
  color: var(--color-text-muted);
}

/* Drag & Drop visual feedback */
.sta-textarea.drag-over {
  border-color: var(--color-accent);
  background-color: rgba(102, 126, 234, 0.08);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15), 0 0 20px rgba(102, 126, 234, 0.2);
  transform: scale(1.01);
}

/* Action Buttons Container */
.action-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.upload-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.upload-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.upload-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(79, 172, 254, 0.5);
}

.upload-button:hover::before {
  left: 100%;
}

.upload-button:active {
  transform: translateY(0);
}

.upload-button .btn-icon {
  transition: transform var(--transition-base);
}

.upload-button:hover .btn-icon {
  transform: translateY(-2px);
}

.parse-button {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.parse-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.parse-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(102, 126, 234, 0.5);
}

.parse-button:hover::before {
  left: 100%;
}

.parse-button:active {
  transform: translateY(0);
}

.btn-icon {
  transition: transform var(--transition-base);
}

.parse-button:hover .btn-icon {
  transform: translateY(2px);
}

/* ==========================================
   Messages
   ========================================== */
.error-message,
.info-message {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 500;
  animation: slideIn 0.4s ease-out;
}

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

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

/* ==========================================
   Results Section
   ========================================== */
.results-section {
  animation: fadeInUp 0.6s ease-out;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.results-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.transaction-count {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.results-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.export-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  color: var(--color-success);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.export-button:hover {
  background: rgba(16, 185, 129, 0.2);
  border-color: var(--color-success);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.export-button:active {
  transform: translateY(0);
}

.export-button svg {
  transition: transform var(--transition-base);
}

.export-button:hover svg {
  transform: translateY(2px);
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.transactions-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.transactions-table thead {
  background: rgba(102, 126, 234, 0.1);
  position: sticky;
  top: 0;
}

.transactions-table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--color-text-primary);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.transactions-table tbody tr {
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--color-border);
}

.transactions-table tbody tr:hover {
  background: rgba(102, 126, 234, 0.05);
}

.transactions-table td {
  padding: var(--spacing-md);
  color: var(--color-text-secondary);
}

.transactions-table td:first-child,
.transactions-table td:nth-child(2) {
  white-space: nowrap;
}

/* Transaction Type Styling */
.type-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
}

.type-debit {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

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

/* Amount Styling */
.amount {
  font-weight: 600;
  font-family: 'Courier New', monospace;
}

.amount-debit {
  color: var(--color-error);
}

.amount-credit {
  color: var(--color-success);
}

/* ==========================================
   Filters Panel
   ========================================== */
.filters-panel {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: rgba(20, 20, 40, 0.4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  align-items: flex-end;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  flex: 1;
  min-width: 200px;
}

.filter-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

.filter-icon {
  color: var(--color-accent);
}

.filter-input {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.filter-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.filter-input::placeholder {
  color: var(--color-text-muted);
}

.filter-input-small {
  width: 140px;
}

.date-range,
.amount-range {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.range-separator {
  color: var(--color-text-muted);
  font-weight: 300;
}

.reset-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.reset-button:hover {
  background: rgba(102, 126, 234, 0.2);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
  transform: translateY(-1px);
}

.reset-button:active {
  transform: translateY(0);
}

/* Text Highlighting */
.highlight {
  background: rgba(255, 235, 59, 0.3);
  color: #ffd700;
  font-weight: 600;
  padding: 1px 2px;
  border-radius: 2px;
}

/* Hidden row for filtered results */
.filtered-out {
  display: none !important;
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
  .container {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .header h1 {
    font-size: var(--font-size-xl);
  }

  .table-wrapper {
    max-height: 600px;
    overflow-y: auto;
  }
}

@media (max-width: 768px) {
  .header h1 {
    font-size: var(--font-size-lg);
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .subtitle {
    font-size: var(--font-size-base);
  }

  .card {
    padding: var(--spacing-lg);
  }

  .results-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .transactions-table {
    font-size: 12px;
  }

  .transactions-table th,
  .transactions-table td {
    padding: var(--spacing-sm);
  }

  .filters-panel {
    padding: var(--spacing-md);
  }

  .filter-row {
    flex-direction: column;
  }

  .filter-group {
    min-width: 100%;
  }

  .filter-input-small {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .parse-button {
    width: 100%;
    justify-content: center;
  }

  .reset-button {
    width: 100%;
    justify-content: center;
  }
}