:root {
  --primary-color: #1a73e8;
  --secondary-color: #34a853;
  --warning-color: #fbbc04;
  --error-color: #ea4335;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --border-color: #dadce0;
  --bg-light: #f8f9fa;
  --success-color: #0f5132;
}

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

body {
  font-family: "Josefin Sans", sans-serif;
  background-color: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Navbar */

.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  overflow: hidden;
  z-index: 999;
  background: #e6f1ffff;
  padding: 0.3rem 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.gradient-text {
  color: #297eecff;
  font-weight: 700;
  font-size: 25px;
  font-family: "Josefin Sans", sans-serif;
}

/* Menu */

.nav-menu {
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
  justify-content: start;
}

.nav-menu .btn {
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.nav-menu .btn.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Main Content */

.card {
  border: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.card-header {
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  color: var(--text-primary);
  border-radius: 12px 12px 0 0 !important;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.form-control,
.form-select {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(26, 115, 232, 0.25);
}

.btn {
  width: auto;
  border-radius: 8px;
  padding: 0.5rem 1.5rem;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #1557b0;
  border-color: #1557b0;
  transform: translateY(-1px);
}

.btn-success {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background-color: var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.calendar-day {
  background: white;
  padding: 1rem;
  min-height: 100px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  position: relative;
}

.calendar-day:hover {
  background-color: #f0f7ff;
}

.calendar-day.has-trip {
  background-color: #e8f4fd;
  border-left: 4px solid var(--primary-color);
}

.calendar-day.selected {
  background-color: var(--primary-color);
  color: white;
}

.calendar-header {
  background-color: var(--primary-color);
  color: white;
  padding: 0.75rem;
  text-align: center;
  font-weight: 600;
}

.expense-row {
  background-color: #f8f9fa;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border-color);
  position: relative;
}

.expense-row .row-header {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.expense-row .remove-btn {
  position: absolute;
  top: 10px;
  right: 10px;
}

.summary-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 12px;
  padding: 1.5rem;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.summary-item:last-child {
  border-bottom: none;
  font-weight: 600;
  font-size: 1.1rem;
}

.icon-wrapper {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(26, 115, 232, 0.1);
  border-radius: 6px;
  margin-right: 0.5rem;
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}

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

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

.loading {
  display: none;
  text-align: center;
  padding: 2rem;
}

.spinner-border {
  color: var(--primary-color);
}

.alert {
  border-radius: 8px;
  border: none;
}

.alert-success {
  background-color: #d1e7dd;
  color: var(--success-color);
}

.modal-content {
  border-radius: 12px;
  border: none;
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-light);
}

.form-label {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.input-group-text {
  background-color: var(--bg-light);
  border-color: var(--border-color);
}

.table {
  border-radius: 8px;
  overflow: hidden;
}

.table th {
  background-color: var(--bg-light);
  border-bottom: 2px solid var(--border-color);
  font-weight: 600;
}

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.notification-alert {
  position: fixed;
  top: 10px;
  right: 10px;
  z-index: 1000;
  max-width: 400px;
}

@media (max-width: 768px) {
  .logo {
    font-size: 1.5rem;
  }

  .calendar-grid {
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
  }

  .calendar-day {
    padding: 0.5rem;
    min-height: 80px;
    font-size: 0.9rem;
  }

  .card {
    margin-bottom: 1rem;
  }

  .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }

  .nav-menu .btn {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 576px) {
  .container-fluid {
    padding: 0.5rem;
  }

  .card-body {
    padding: 1rem;
  }

  .calendar-day {
    padding: 0.25rem;
    min-height: 60px;
    font-size: 0.8rem;
  }

  .summary-card {
    padding: 1rem;
  }

  .card-header {
    display: grid;
    place-items: center;
  }
}

@media screen and (max-width: 425px) {
  .header {
    padding: 0;
  }

  .gradient-text {
    display: none;
  }

  .nav-menu {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  .nav-menu .btn {
    width: 100%;
    text-align: center;
    padding: 0.5rem;
  }
}