/* ==========================================================================
   Expense Tracker Stylesheet - Premium Fintech Design
   Hacktoberfest 2026 Edition
   Clean light theme with vibrant emerald green accents & modern typography
   ========================================================================== */

/* --- CSS Variables & Design Tokens --- */
:root {
  /* Brand Typography */
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Outfit', 'Plus Jakarta Sans', sans-serif;

  /* Emerald Green Palette */
  --primary-50: #ecfdf5;
  --primary-100: #d1fae5;
  --primary-200: #a7f3d0;
  --primary-300: #6ee7b7;
  --primary-400: #34d399;
  --primary-500: #10b981;
  --primary-600: #059669;
  --primary-700: #047857;
  --primary-800: #065f46;
  --primary-900: #064e3b;

  /* Neutral Slate Palette */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-light: #e2e8f0;
  --border-focus: #10b981;
  --input-bg: #f8fafc;
  --input-bg-focus: #ffffff;

  /* Feedback Colors */
  --danger-50: #fef2f2;
  --danger-100: #fee2e2;
  --danger-200: #fecaca;
  --danger-500: #ef4444;
  --danger-600: #dc2626;

  /* Category Badges */
  --cat-food-bg: #fffbeb;
  --cat-food-text: #b45309;
  --cat-food-dot: #f59e0b;

  --cat-travel-bg: #eff6ff;
  --cat-travel-text: #1d4ed8;
  --cat-travel-dot: #3b82f6;

  --cat-shopping-bg: #fdf2f8;
  --cat-shopping-text: #be185d;
  --cat-shopping-dot: #ec4899;

  --cat-education-bg: #f5f3ff;
  --cat-education-text: #6d28d9;
  --cat-education-dot: #8b5cf6;

  --cat-other-bg: #f1f5f9;
  --cat-other-text: #475569;
  --cat-other-dot: #64748b;

  /* Shadows */
  --shadow-subtle: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.03), 0 0 0 1px rgba(0, 0, 0, 0.03);
  --shadow-hover: 0 12px 24px -4px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-green: 0 8px 20px -4px rgba(16, 185, 129, 0.35);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 22px;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  padding: 32px 16px;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Background Light Glows */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

.bg-glow-1 {
  width: 480px;
  height: 480px;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, rgba(52, 211, 153, 0.02) 70%, transparent 100%);
}

.bg-glow-2 {
  width: 400px;
  height: 400px;
  bottom: -60px;
  right: -60px;
  background: radial-gradient(circle, rgba(5, 150, 105, 0.08) 0%, transparent 70%);
}

/* --- App Main Container --- */
.app-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  z-index: 1;
}

/* --- Header Section --- */
.app-header {
  text-align: center;
  padding: 10px 0 6px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--primary-50);
  border: 1px solid var(--primary-200);
  color: var(--primary-800);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 9999px;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary-500);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.brand-title-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 6px;
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.25);
}

.app-header h1 {
  font-family: var(--font-display);
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.app-header .subtitle {
  color: var(--text-secondary);
  font-size: 0.98rem;
  max-width: 540px;
}

/* --- Hero Total Spent Overview Card --- */
.total-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-700) 45%, var(--primary-600) 100%);
  border-radius: var(--radius-xl);
  padding: 30px;
  color: #ffffff;
  box-shadow: var(--shadow-green), 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.total-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -4px rgba(16, 185, 129, 0.4), 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.total-card-decoration {
  position: absolute;
  top: -40px;
  right: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
  pointer-events: none;
}

.total-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

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

.total-icon-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

.total-label {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-100);
}

.live-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.14);
  padding: 4px 10px;
  border-radius: 9999px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #34d399;
}

.total-amount-display {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 12px 0 20px 0;
}

.total-currency-sign {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-200);
}

.total-amount {
  font-family: var(--font-display);
  font-size: 3.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: #ffffff;
}

.total-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.total-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  padding: 6px 14px;
  border-radius: 9999px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- Reusable Card Container --- */
.card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 28px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  border-color: #cbd5e1;
}

.card-header {
  margin-bottom: 22px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 3px;
}

/* --- Validation Error Banner --- */
.error-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--danger-50);
  border: 1px solid var(--danger-200);
  color: var(--danger-600);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 0.92rem;
  font-weight: 600;
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.error-icon {
  flex-shrink: 0;
}

/* --- Form Layout & Input Design --- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 4px;
}

.label-with-action {
  display: flex;
  align-items: center;
  justify-content: space-between !important;
}

.shortcut-btn {
  background: var(--primary-50);
  border: 1px solid var(--primary-200);
  color: var(--primary-700);
  font-family: inherit;
  font-size: 0.74rem;
  font-weight: 700;
  cursor: pointer;
  padding: 2px 8px;
  border-radius: 9999px;
  transition: all 0.15s ease;
}

.shortcut-btn:hover {
  background-color: var(--primary-100);
  color: var(--primary-900);
  transform: translateY(-0.5px);
}

.required {
  color: var(--danger-500);
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  pointer-events: none;
  transition: color 0.15s ease;
}

.rupee-icon {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}

.input-wrapper input,
.input-wrapper select {
  width: 100%;
  padding: 12px 14px 12px 42px;
  background-color: var(--input-bg);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-main);
  font-weight: 500;
  outline: none;
  transition: all 0.2s ease;
}

.input-wrapper input:hover,
.input-wrapper select:hover {
  border-color: #cbd5e1;
}

.input-wrapper input:focus,
.input-wrapper select:focus {
  background-color: var(--input-bg-focus);
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
}

.input-wrapper input:focus + .input-icon,
.input-wrapper input:focus ~ .input-icon {
  color: var(--primary-600);
}

/* Custom Select Wrapper */
.select-wrapper {
  position: relative;
}

.select-wrapper select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  padding-right: 38px;
}

.select-chevron {
  position: absolute;
  right: 14px;
  pointer-events: none;
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 700;
  padding: 13px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-green);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -3px rgba(16, 185, 129, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background-color: var(--danger-50);
  color: var(--danger-600);
  border: 1px solid var(--danger-200);
  padding: 7px 12px;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-delete svg {
  flex-shrink: 0;
}

.btn-delete:hover {
  background-color: var(--danger-600);
  color: #ffffff;
  border-color: var(--danger-600);
  transform: scale(1.02);
  box-shadow: 0 2px 6px rgba(220, 38, 38, 0.25);
}

/* --- List Section Header --- */
.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.item-count {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-800);
  background-color: var(--primary-50);
  border: 1px solid var(--primary-200);
  padding: 6px 14px;
  border-radius: 9999px;
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  border-radius: var(--radius-lg);
  background-color: #fbfcfe;
  border: 1.5px dashed var(--border-light);
}

.empty-illustration {
  margin-bottom: 16px;
  display: inline-flex;
  padding: 16px;
  border-radius: 50%;
  background: var(--primary-50);
}

.empty-state h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.empty-state p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  max-width: 420px;
  margin: 0 auto;
}

/* --- Table Styles --- */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background-color: #ffffff;
}

.expense-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.expense-table th {
  background-color: #f8fafc;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 14px 18px;
  border-bottom: 1.5px solid var(--border-light);
}

.expense-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
  font-size: 0.92rem;
}

.expense-table tbody tr:last-child td {
  border-bottom: none;
}

.expense-table tbody tr {
  transition: background-color 0.15s ease;
}

.expense-table tbody tr:hover {
  background-color: #f8fafc;
}

.expense-name-cell {
  font-weight: 600;
  color: var(--text-main);
}

.expense-amount-cell {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--primary-700);
  white-space: nowrap;
}

.expense-date-cell {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

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

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

/* --- Category Badges with Dots --- */
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  width: fit-content;
}

.category-badge::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.category-Food {
  background-color: var(--cat-food-bg);
  color: var(--cat-food-text);
}
.category-Food::before {
  background-color: var(--cat-food-dot);
}

.category-Travel {
  background-color: var(--cat-travel-bg);
  color: var(--cat-travel-text);
}
.category-Travel::before {
  background-color: var(--cat-travel-dot);
}

.category-Shopping {
  background-color: var(--cat-shopping-bg);
  color: var(--cat-shopping-text);
}
.category-Shopping::before {
  background-color: var(--cat-shopping-dot);
}

.category-Education {
  background-color: var(--cat-education-bg);
  color: var(--cat-education-text);
}
.category-Education::before {
  background-color: var(--cat-education-dot);
}

.category-Other {
  background-color: var(--cat-other-bg);
  color: var(--cat-other-text);
}
.category-Other::before {
  background-color: var(--cat-other-dot);
}

/* --- Toast Feedback Notification --- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: #0f172a;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 9999;
  transform: translateY(120%);
  opacity: 0;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* --- Footer --- */
.app-footer {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 16px 0 24px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.storage-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  color: var(--primary-700);
  background-color: var(--primary-50);
  padding: 5px 12px;
  border-radius: 9999px;
  border: 1px solid var(--primary-200);
}

/* --- Responsive Media Queries --- */
@media (max-width: 680px) {
  body {
    padding: 20px 12px;
  }

  .app-header h1 {
    font-size: 1.7rem;
  }

  .brand-icon {
    width: 36px;
    height: 36px;
  }

  .total-card {
    padding: 22px 18px;
  }

  .total-amount {
    font-size: 2.8rem;
  }

  .total-currency-sign {
    font-size: 1.8rem;
  }

  .card {
    padding: 20px 16px;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .expense-table th,
  .expense-table td {
    padding: 12px 12px;
    font-size: 0.85rem;
  }

  .toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    justify-content: center;
  }
}