body, input, select, button, .btn, th, td, h1, #total {
  color: #fff !important;
}
body.light-mode, body.light-mode input, body.light-mode select, body.light-mode button, body.light-mode .btn, body.light-mode th, body.light-mode td, body.light-mode h1, body.light-mode #total {
  color: #222 !important;
}

:root {
  --primary: #007bff;
  --primary-dark: #0056b3;
  --background-light: #f0f4f8;
  --background-dark: #181a1b;
  --card-light: #fff;
  --card-dark: #23272a;
  --text-light: #222;
  --text-dark: #f4f4f4;
  --shadow: 0 4px 16px rgba(0,0,0,0.08);
  --transition: 0.4s cubic-bezier(.4,0,.2,1);
}

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: var(--background-light);
  color: var(--text-light);
  transition: background var(--transition), color var(--transition);
}

body.dark-mode {
  background: var(--background-dark);
  color: var(--text-dark);
}

.card {
  background: var(--card-light);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
  transition: background var(--transition), box-shadow var(--transition);
}

body.dark-mode .card {
  background: var(--card-dark);
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}

.main-container {
  max-width: 900px;
  margin: 40px auto;
}

h1 {
  text-align: center;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 0;
}

input, select {
  border-radius: 12px;
  border: 1.5px solid #ccc;
  padding: 12px;
  font-size: 1rem;
  flex: 1;
  outline: none;
  background: transparent;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}

input:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(0,123,255,0.15);
  background: #eaf4ff;
}

body.dark-mode input:focus, body.dark-mode select:focus {
  background: #23272a;
}

.btn, button, .add-btn {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary) 0%, #00c6ff 100%);
  color: #fff;
  border: none;
  padding: 12px 32px;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: background var(--transition), transform 0.2s, box-shadow var(--transition);
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn:hover, button:hover, .add-btn:hover {
  background: linear-gradient(90deg, var(--primary-dark) 0%, var(--primary) 100%);
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f9d423 0%, #ff4e50 100%);
  color: #fff;
  border: none;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0,0,0,0.18);
  transition: background 0.4s, transform 0.2s;
  overflow: hidden;
}
.theme-toggle:hover {
  background: linear-gradient(135deg, #ff4e50 0%, #f9d423 100%);
  transform: scale(1.1) rotate(15deg);
}
.icon-sun, .icon-moon {
  transition: opacity 0.4s, transform 0.4s;
  position: absolute;
}
body.light-mode .icon-sun {
  opacity: 1;
  transform: scale(1);
}
body.light-mode .icon-moon {
  opacity: 0;
  transform: scale(0.5);
}
body.dark-mode .icon-sun {
  opacity: 0;
  transform: scale(0.5);
}
body.dark-mode .icon-moon {
  opacity: 1;
  transform: scale(1);
}
.icon-sun::before {
  content: "☀️";
}
.icon-moon::before {
  content: "🌙";
}

/* Center the Add Expense Button */
.center-btn {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

.expensetable-list {
  max-height: 400px;
  overflow-y: auto;
  background: var(--card-light);
  border-radius: 12px;
  padding: 10px;
  box-shadow: var(--shadow);
  transition: background var(--transition), box-shadow var(--transition);
}

body.dark-mode .expensetable-list {
  background: var(--card-dark);
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

th, td {
  padding: 12px;
  border: 1px solid #ccc;
  text-align: left;
  transition: background var(--transition), color var(--transition);
}

th {
  background: var(--primary);
  color: white;
  position: sticky;
  top: 0;
  z-index: 2;
}

tr {
  transition: background 0.4s, opacity 0.4s;
}

tr.added {
  background: #d1e7fd;
  opacity: 0;
  animation: fadeIn 0.6s forwards;
}

tr.removed {
  animation: fadeOut 0.6s forwards;
}

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

#total {
  margin-top: 10px;
  font-weight: bold;
  font-size: 1.1rem;
  text-align: right;
}

@media (max-width: 600px) {
  .form-row {
    flex-direction: column;
  }
  .expensetable-list table {
    min-width: 400px;
  }
}