/* Modern UI for Meeting Register Application */
:root {
  /* Color palette */
  --primary-color: #2e7d32;
  --primary-light: #60ad5e;
  --primary-dark: #005005;
  --secondary-color: #37474f;
  --secondary-light: #62727b;
  --secondary-dark: #102027;
  --accent-color: #ff9800;
  --text-light: #ffffff;
  --text-dark: #333333;
  --background-light: #f5f5f5;
  --background-white: #ffffff;
  --danger: #d32f2f;
  --success: #388e3c;
  --info: #0288d1;
  --warning: #f57c00;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* Global styles */
html, body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--background-light);
  margin: 0;
  padding: 0;
  height: 100%;
  color: var(--text-dark);
}

/* Layout */
.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--background-light);
}

.content {
  padding: 1.5rem;
  flex: 1;
}

/* Navigation and Sidebar */
.sidebar {
  background-color: var(--primary-color);
  box-shadow: var(--box-shadow);
}

.top-row {
  background-color: var(--primary-color);
  border-bottom: none;
  height: 4rem;
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

/* Navigation Menu */
.navbar-brand {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-light);
}

.navbar-toggler {
  background-color: transparent;
  border: none;
  color: var(--text-light);
}

.navbar-toggler:focus {
  outline: none;
}

.navbar-toggler-icon {
  color: var(--text-light);
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-item a {
  color: rgba(255, 255, 255, 0.8) !important;
  border-radius: var(--border-radius);
  padding: 0.75rem 1.5rem;
  transition: var(--transition);
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.nav-item a:hover {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--text-light) !important;
}

.nav-item a.active {
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--text-light) !important;
  font-weight: 600;
}

.nav-item i {
  margin-right: 0.75rem;
}

/* Buttons */
.btn {
  border-radius: var(--border-radius);
  padding: 0.5rem 1rem;
  font-weight: 500;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

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

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

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--text-light);
}

.btn-success {
  background-color: var(--success);
  color: var(--text-light);
}

.btn-danger {
  background-color: var(--danger);
  color: var(--text-light);
}

.btn-info {
  background-color: var(--info);
  color: var(--text-light);
}

.btn-warning {
  background-color: var(--warning);
  color: var(--text-dark);
}

.btn-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
}

/* Cards */
.card {
  border-radius: var(--border-radius);
  border: none;
  box-shadow: var(--box-shadow);
  margin-bottom: 1.5rem;
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.card-header {
  background-color: var(--primary-color);
  color: var(--text-light);
  font-weight: 500;
  padding: 1rem 1.5rem;
}

.card-body {
  padding: 1.5rem;
}

/* Tables */
.table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  background-color: var(--background-white);
}

/* Container for tables to ensure responsiveness */
.table-responsive {
  display: block;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table th {
  background-color: var(--secondary-light);
  color: var(--text-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 1rem;
}

.table td {
  padding: 0.75rem 1rem;
  vertical-align: middle;
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(0, 0, 0, 0.02);
}

.table-hover tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

/* Forms */
.form-control {
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  border: 1px solid #ddd;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(46, 125, 50, 0.25);
}

.form-label {
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

/* Alerts */
.alert {
  border-radius: var(--border-radius);
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  border: none;
  box-shadow: var(--box-shadow);
}

.alert-success {
  background-color: rgba(56, 142, 60, 0.15);
  color: var(--success);
}

.alert-danger {
  background-color: rgba(211, 47, 47, 0.15);
  color: var(--danger);
}

.alert-info {
  background-color: rgba(2, 136, 209, 0.15);
  color: var(--info);
}

.alert-warning {
  background-color: rgba(245, 124, 0, 0.15);
  color: var(--warning);
}

/* Responsive */
@media (max-width: 768px) {
  .top-row {
    padding: 0 1rem;
  }
  
  .content {
    padding: 1rem;
  }
  
  .table th, .table td {
    padding: 0.5rem;
  }
}

@media (min-width: 992px) {
  .sidebar {
    width: 280px;
  }
}