:root {
    --primary-color: #165DFF;
    --secondary-color: #4080FF;
    --light-color: #E8F3FF;
    --dark-color: #0E42D2;
    --text-color: #333;
    --bg-color: #F5F7FA;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-size: 24px;
    font-weight: bold;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: var(--dark-color);
}

main {
    padding: 40px 0;
}

section {
    margin-bottom: 40px;
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

h2 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--light-color);
    padding-bottom: 10px;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 15px;
    border-radius: 4px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.btn-secondary {
    background-color: #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

table th {
    background-color: var(--light-color);
    color: var(--primary-color);
}

table tr:hover {
    background-color: #f5f5f5;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(22, 93, 255, 0.2);
}

.pagination {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.pagination a {
    color: var(--primary-color);
    padding: 8px 16px;
    text-decoration: none;
    border: 1px solid #ddd;
    margin: 0 4px;
    border-radius: 4px;
}

.pagination a.active {
    background-color: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

.pagination a:hover:not(.active) {
    background-color: #ddd;
}

footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 15px 0;
    margin-top: 40px;
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.login-container {
    max-width: 400px;
    margin: 0 auto;
    margin-top: 80px;
}

.auth-form {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.auth-form h2 {
    text-align: center;
}

.auth-form .form-group {
    margin-bottom: 25px;
}

.search-form {
    display: flex;
    margin-bottom: 20px;
}

.search-form input {
    flex: 1;
    margin-right: 10px;
}

.cert-card {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    transition: box-shadow 0.3s;
}

.cert-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.cert-card h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.cert-card p {
    margin: 8px 0;
}

.status-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.status-active {
    background-color: #d4edda;
    color: #155724;
}

.status-expired {
    background-color: #f8d7da;
    color: #721c24;
}

.status-pending {
    background-color: #fff3cd;
    color: #856404;
}

.home-hero {
    background-color: var(--primary-color);
    color: white;
    padding: 80px 0;
    text-align: center;
    margin-bottom: 40px;
}

.home-hero h1 {
    font-size: 36px;
    margin-bottom: 20px;
}

.home-hero p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.home-features {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.feature-card {
    flex: 1 1 calc(33.333% - 30px);
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    text-align: center;
}

.feature-card i {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.apply-section {
    text-align: center;
    padding: 40px 0;
    background-color: var(--light-color);
    border-radius: 8px;
}

.apply-section h2 {
    border-bottom: none;
}    

.cert-detail-card {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    margin-bottom: 40px;
}

.cert-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--light-color);
    padding-bottom: 15px;
}

.cert-header h2 {
    color: var(--primary-color);
    font-size: 24px;
    margin: 0;
    border-bottom: none;
}

.cert-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-bottom: 30px;
}

@media (min-width: 768px) {
    .cert-info {
        grid-template-columns: 1fr 1fr;
    }
}

.info-row {
    display: flex;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.info-label {
    width: 120px;
    font-weight: 500;
    color: var(--primary-color);
}

.info-value {
    flex: 1;
}

.cert-actions {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

.related-certs {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .related-certs {
        grid-template-columns: 1fr 1fr 1fr;
    }
}