body {
    background: #f5f7fa;
    font-size: 14px;
    line-height: 1.5;
    color: #2c3e4f;
    padding-top: 70px;
}

h1, .h1 { font-size: 32px; font-weight: 600; margin-top: 20px; margin-bottom: 16px; }
h2, .h2 { font-size: 26px; font-weight: 600; margin-top: 18px; margin-bottom: 14px; }
h3, .h3 { font-size: 22px; font-weight: 600; margin-top: 18px; margin-bottom: 12px; }
h4, .h4 { font-size: 18px; font-weight: 600; margin-top: 16px; margin-bottom: 10px; }

.navbar {
    border: none;
    border-radius: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 0;
    background: #ffffff;
}

.navbar-fixed-top {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1030;
}

.navbar-brand {
    font-size: 20px;
    font-weight: 700;
    color: #1a4d6f !important;
    padding: 15px 20px;
}

.navbar-nav > li > a {
    font-size: 15px;
    font-weight: 500;
    color: #2c3e50 !important;
    transition: 0.2s;
    position: relative;
}

.navbar-nav > li > a:after {
    content: '';
    position: absolute;
    bottom: 12px;
    left: 15px;
    width: 0;
    height: 2px;
    background: #1a6d8c;
    transition: width 0.2s ease;
}

.navbar-nav > li > a:hover:after,
.navbar-nav > .active > a:after {
    width: calc(100% - 30px);
}

.navbar-nav > li > a:hover,
.navbar-nav > .active > a {
    background-color: transparent !important;
    color: #0f3b54 !important;
}

.dropdown-menu {
    border-radius: 6px;
    border: 1px solid #e6edf4;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    padding: 8px 0;
}

.dropdown-menu > li > a {
    padding: 8px 24px;
    font-size: 14px;
    color: #2c3e50;
}

.dropdown-menu > li > a:hover {
    background: #eef2f8;
    color: #1a4d6f;
}

.panel {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.panel-heading {
    background: #fafcff;
    border-bottom: 1px solid #eef2f8;
    padding: 14px 20px;
    border-radius: 8px 8px 0 0;
}

.panel-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a5578;
}

.panel-body {
    padding: 20px;
    font-size: 14px;
    color: #2d3e50;
}

.panel-footer {
    background: #fafdff;
    border-top: 1px solid #eef2f8;
    border-radius: 0 0 8px 8px;
    padding: 12px 20px;
    font-size: 13px;
}

.panel-primary .panel-heading {
    border-left: 4px solid #2c7da0;
    background: #ffffff;
}
.panel-success .panel-heading {
    border-left: 4px solid #2e9c6b;
}
.panel-info .panel-heading {
    border-left: 4px solid #2f86c1;
}

.btn {
    border-radius: 6px;
    padding: 6px 20px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s;
}

.btn-default {
    background: #fff;
    border-color: #cddae9;
    color: #2c6280;
}

.btn-default:hover {
    background: #f8fafd;
    border-color: #b3c7db;
    transform: translateY(-1px);
}

.btn-primary {
    background: #2c7da0;
    border-color: #2c7da0;
}

.btn-primary:hover {
    background: #236b8e;
    border-color: #1f6080;
    transform: translateY(-1px);
}

.btn-success {
    background: #28a67e;
    border-color: #28a67e;
}
.btn-success:hover {
    background: #218f6c;
}

.btn-lg {
    padding: 10px 26px;
    font-size: 16px;
    border-radius: 8px;
}
.btn-sm {
    padding: 4px 14px;
    font-size: 13px;
}

.form-control {
    border-radius: 6px;
    border: 1px solid #cfddee;
    height: auto;
    font-size: 14px;
    transition: 0.2s;
}

.form-control:focus {
    border-color: #2c7da0;
    box-shadow: 0 0 0 2px rgba(44,125,160,0.15);
}

label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 5px;
}

.input-group-addon {
    border-radius: 6px 0 0 6px;
    background: #f1f5f9;
    border-color: #cfddee;
}

.list-group-item {
    border: 1px solid #eef2f8;
    margin-bottom: -1px;
    padding: 14px 18px;
    font-size: 14px;
    background: #fff;
}

.list-group-item:first-child {
    border-radius: 8px 8px 0 0;
}
.list-group-item:last-child {
    border-radius: 0 0 8px 8px;
}

.list-group-item:hover {
    background: #fafdff;
    border-left: 3px solid #2c7da0;
    padding-left: 16px;
}

.badge {
    background: #2c7da0;
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 12px;
}

.alert {
    border-radius: 8px;
    border: none;
    padding: 14px 20px;
    font-size: 14px;
    margin-bottom: 20px;
}

.alert-success { background: #e9f6ef; color: #136b48; }
.alert-info { background: #e7f1fa; color: #1d6892; }
.alert-warning { background: #fef3e2; color: #a4651a; }
.alert-danger { background: #fdeded; color: #b33b3b; }

.label {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
}

.progress {
    height: 8px;
    border-radius: 10px;
    background-color: #e2e9f0;
}

.progress-bar {
    border-radius: 10px;
    background: #2c7da0;
    font-size: 10px;
    line-height: 10px;
}

.pagination > li > a, .pagination > li > span {
    border-radius: 6px !important;
    margin: 0 3px;
    border: 1px solid #dee6ef;
    background: #fff;
    color: #2c6280;
    font-size: 14px;
    padding: 6px 14px;
}

.pagination > li > a:hover {
    background: #eef3fc;
    border-color: #cbdae9;
}

.pagination > .active > a, .pagination > .active > span {
    background: #2c7da0;
    border-color: #2c7da0;
    color: white;
}

.breadcrumb {
    background: transparent;
    padding: 8px 0;
    font-size: 14px;
    margin-bottom: 20px;
}
.breadcrumb > li + li:before {
    content: "/";
    color: #9bb1c7;
}

.modal-content {
    border-radius: 12px;
    border: none;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}
.modal-header {
    border-bottom: 1px solid #eef2f8;
    padding: 18px 24px;
}
.modal-body {
    font-size: 15px;
    padding: 24px;
}
.modal-footer {
    border-top: 1px solid #eef2f8;
    padding: 16px 24px;
}
.modal-title {
    font-size: 20px;
    font-weight: 600;
}

.table {
    font-size: 14px;
}
.table > thead > tr > th {
    border-bottom: 2px solid #e2eaf1;
    font-weight: 600;
    color: #1e5475;
    padding: 12px 12px;
}
.table > tbody > tr > td {
    padding: 12px 12px;
    border-top: 1px solid #ecf3f9;
}

.well {
    background: #ffffff;
    border: 1px solid #e6edf4;
    border-radius: 8px;
    box-shadow: none;
    padding: 22px;
    margin-bottom: 20px;
}

.thumbnail {
    border-radius: 8px;
    border: 1px solid #eef2f8;
    padding: 8px;
}

footer {
    text-align: center;
    padding: 20px 0 20px;
    color: #7b98b3;
    font-size: 13px;
    margin-top: 20px;
    border-top: 1px solid #e2eaf0;
}

.row {
    margin-left: -15px;
    margin-right: -15px;
}

.navbar-form {
    margin-top: 8px;
    margin-bottom: 8px;
}