:root {
    --primary-color: #0f3964;
    --primary-light: #a8c6e8;
    --accent-green: #28a745;
    --accent-green-hover: #218838;
    --bg-body: #f0f2f5;
    --border-color: #e2e8f0;
    --text-muted: #64748b;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-body);
    margin: 0;
    color: #333;
}

.header-site {
    background-color: var(--primary-color);
    color: white;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.header-site h1 {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
}

.header-site h2 {
    margin: 5px 0 0 0;
    font-size: 18px;
    color: var(--primary-light);
    font-weight: normal;
}

.container-cards {
    max-width: 900px;
    margin: 40px auto 30px auto;
    display: flex;
    gap: 30px;
    padding: 0 20px;
    flex-wrap: wrap;
}

.custom-card {
    background: white;
    padding: 35px 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    flex: 1;
    min-width: 280px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.custom-card h3 {
    color: var(--primary-color);
    margin-top: 0;
    font-size: 22px;
}

.custom-card p {
    color: #666;
    line-height: 1.5;
    margin-bottom: 25px;
}

.btn-custom {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: 0.3s;
}

.btn-login-green {
    background-color: var(--accent-green);
    color: white;
    border: 2px solid var(--accent-green);
}

.btn-login-green:hover {
    background-color: var(--accent-green-hover);
    color: white;
}

.btn-cadastro-blue {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-cadastro-blue:hover {
    background-color: var(--primary-color);
    color: white;
}

.admin-section {
    max-width: 900px;
    margin: 0 auto 50px auto;
    padding: 30px 20px 0 20px;
    text-align: center;
    border-top: 2px solid var(--border-color);
}

.admin-section p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 15px;
    font-weight: 500;
}

.btn-admin-panel {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 10px 25px;
    font-size: 14px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

.btn-admin-panel:hover {
    background-color: var(--primary-color);
    color: white;
}