:root {
    /* Bảng màu chính */
    --primary: #2E5A88;
    --primary-hover: #254a71;
    --secondary: #E63946;
    --secondary-hover: #d12836;
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --light: #F8F9FA;
    --dark: #212529;
    --gray: #6C757D;
    --gray-light: #E9ECEF;
    
    /* Màu văn bản */
    --text-dark: #212529;
    --text-muted: #6C757D;
    --text-light: #F8F9FA;
    
    /* Kích thước và khoảng cách */
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-sm: 0.25rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);

    /* Chuyển động */
    --transition: all 0.3s ease;
}

/* Reset và cơ bản */
html, body {
    font-family: 'Inter', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark, #212529);
    background-color: var(--light, #F8F9FA);
    line-height: 1.5;
}

/* Header và navigation */
.navbar {
    box-shadow: var(--box-shadow, 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075));
    background-color: var(--primary, #2E5A88) !important;
}

.navbar-brand {
    font-weight: 600;
    color: var(--text-light, #F8F9FA) !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    transition: var(--transition, all 0.3s ease);
    font-weight: 500;
    padding: 0.5rem 1rem;
}

.nav-link:hover, .nav-link:focus {
    color: var(--text-light, #F8F9FA) !important;
}

.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.1);
}

.dropdown-menu {
    border: none;
    box-shadow: var(--box-shadow-lg, 0 0.5rem 1rem rgba(0, 0, 0, 0.15));
    border-radius: var(--border-radius, 0.375rem);
    z-index: 1050;
}

/* Đảm bảo dropdown form hoạt động đúng */
.dropdown-menu form {
    margin: 0;
    padding: 0;
}

.dropdown-menu form button {
    width: 100%;
    text-align: left;
    border: none;
    background: none;
    padding: 0.5rem 1rem;
    color: var(--text-dark, #212529);
    transition: var(--transition, all 0.3s ease);
}

.dropdown-menu form button:hover {
    background-color: var(--gray-light, #E9ECEF);
    color: var(--text-dark, #212529);
}

.dropdown-menu form button.text-danger:hover {
    background-color: var(--danger, #DC3545);
    color: white;
}

/* Đảm bảo dropdown không bị che khuất */
.dropdown {
    position: relative;
}

.dropdown-menu.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius, 0.375rem);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition, all 0.3s ease);
}

.btn-primary {
    background-color: var(--primary, #2E5A88);
    border-color: var(--primary, #2E5A88);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-hover, #254a71);
    border-color: var(--primary-hover, #254a71);
}

.btn-secondary {
    background-color: var(--secondary, #E63946);
    border-color: var(--secondary, #E63946);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--secondary-hover, #d12836);
    border-color: var(--secondary-hover, #d12836);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon .fas, .btn-icon .far, .btn-icon .fab {
    margin-right: 0.5rem;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius, 0.375rem);
    box-shadow: var(--box-shadow, 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075));
    transition: var(--transition, all 0.3s ease);
}

.card:hover {
    box-shadow: var(--box-shadow-lg, 0 0.5rem 1rem rgba(0, 0, 0, 0.15));
}

.card-header {
    background-color: var(--gray-light, #E9ECEF);
    border-bottom: none;
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.card-footer {
    background-color: var(--gray-light, #E9ECEF);
    border-top: none;
}

/* Forms */
.form-control {
    border: 1px solid var(--gray-light, #E9ECEF);
    border-radius: var(--border-radius, 0.375rem);
    padding: 0.5rem 0.75rem;
    transition: var(--transition, all 0.3s ease);
}

.form-control:focus {
    border-color: var(--primary, #2E5A88);
    box-shadow: 0 0 0 0.2rem rgba(46, 90, 136, 0.25);
}

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

/* Tables */
.table th {
    border-top: none;
    font-weight: 600;
    color: var(--text-dark, #212529);
    background-color: var(--gray-light, #E9ECEF);
}

.table-hover tbody tr:hover {
    background-color: rgba(46, 90, 136, 0.05);
}

.table-bordered td, .table-bordered th {
    border: 1px solid var(--gray-light, #E9ECEF);
}

/* Badges */
.badge {
    font-weight: 500;
    border-radius: 30px;
    padding: 0.35em 0.65em;
}

.badge-primary {
    background-color: var(--primary, #2E5A88);
}

.badge-secondary {
    background-color: var(--secondary, #E63946);
}

.badge-success {
    background-color: var(--success, #28A745);
}

.badge-warning {
    background-color: var(--warning, #FFC107);
    color: var(--dark, #212529);
}

.badge-danger {
    background-color: var(--danger, #DC3545);
}

/* Breadcrumb */
.breadcrumb {
    background-color: transparent;
    padding: 0.75rem 0;
}

.breadcrumb-item a {
    color: var(--primary, #2E5A88);
    font-weight: 500;
}

/* Utilidades */
.shadow-sm {
    box-shadow: var(--box-shadow, 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075)) !important;
}

.shadow {
    box-shadow: var(--box-shadow-lg, 0 0.5rem 1rem rgba(0, 0, 0, 0.15)) !important;
}

/* Dashboard */
.dashboard-stat {
    border-radius: var(--border-radius, 0.375rem);
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    background-color: white;
    box-shadow: var(--box-shadow, 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075));
}

.stat-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background-color: rgba(46, 90, 136, 0.1);
    color: var(--primary, #2E5A88);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-right: 1rem;
}

.stat-content h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: var(--text-muted, #6C757D);
    margin-bottom: 0;
}

/* Layout overrides */
.container-fluid {
    padding: 1.5rem 1.5rem;
}

@media (min-width: 992px) {
    .container-fluid {
        padding: 2rem 2rem;
    }
}

/* Status styles */
.status-badge {
    display: inline-block;
    padding: 0.25em 0.6em;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 30px;
    text-transform: capitalize;
}

.status-pending {
    background-color: #FFE5A0;
    color: #856404;
}

.status-confirmed {
    background-color: #A8DADC;
    color: #1E5F74;
}

.status-completed {
    background-color: #C7E5D1;
    color: #155724;
}

.status-cancelled {
    background-color: #F4CCCC;
    color: #721C24;
}

/* Reservation styles */
.reservation-card {
    transition: var(--transition, all 0.3s ease);
    border-radius: var(--border-radius, 0.375rem);
    overflow: hidden;
}

.reservation-card:hover {
    transform: translateY(-3px);
}

/* Floor visualization */
.floor-layout {
    background-color: #F8F9FA;
    border: 1px solid var(--gray-light, #E9ECEF);
    border-radius: var(--border-radius, 0.375rem);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.table-item {
    background-color: white;
    border: 2px solid var(--primary, #2E5A88);
    border-radius: var(--border-radius-sm, 0.25rem);
    padding: 1rem;
    text-align: center;
    margin: 0.5rem;
    display: inline-block;
    min-width: 120px;
    transition: var(--transition, all 0.3s ease);
}

.table-item.occupied {
    border-color: var(--danger, #DC3545);
    background-color: rgba(220, 53, 69, 0.1);
}

.table-item.available {
    border-color: var(--success, #28A745);
    background-color: rgba(40, 167, 69, 0.1);
}

/* Footer */
footer {
    background-color: var(--dark, #212529);
    color: var(--text-light, #F8F9FA);
    padding: 2rem 0;
    margin-top: 2rem;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--gray, #6C757D);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary, #2E5A88);
}

html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* CSS để làm đẹp các nút thao tác trong bảng */
.table .btn {
  margin: 2px;
  padding: 5px 10px;
  border-radius: 4px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
}

.table .btn i {
  margin-right: 4px;
}

.table .btn .d-none.d-md-inline {
  margin-left: 2px;
}

.d-flex.gap-1 {
  flex-wrap: wrap;
}

/* CSS để làm nổi bật nút khi hover */
.table .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.2s;
}

/* Breakpoint để hiển thị văn bản trong nút trên thiết bị lớn */
@media (min-width: 1200px) {
  .d-none.d-md-inline {
    display: inline !important;
  }
  
  .table .btn {
    min-width: 80px;
  }
}